Dental handpiece oiling machine

Abstract

A dental handpiece oiling machine comprises a lubricating oil conveying pipeline, a gas conveying pipeline and an atomization generator, and the atomization generator is communicated with the lubricating oil conveying pipeline and the gas conveying pipeline. The atomization generator comprises a gas acceleration structure used for rapidly accelerating gas from the gas conveying pipeline to form high-speed airflow, and further comprises an atomization structure used for enabling lubricating oil from the lubricating oil conveying pipeline to be atomized under the action of the high-speed airflow to form oil mist. The dental handpiece oiling machine further comprises a distributor, the distributor comprises a plurality of output pipelines, and the output pipelines are used for being communicated with a plurality of dental handpieces respectively so as to convey the oil mist to the dental handpieces. According to the dental handpiece oiling machine disclosed by the utility model, as lubricating oil is crushed into vaporific particles by high-speed airflow, oil and gas are fully mixed, and sufficient lubrication can be realized only by a small amount of oil, so that the pollution to the environment is greatly reduced; the oil supply system does not need an oil pump and is simple in structure and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a dental handpiece oiling machine. Background Art

[0002] Dental handpieces are a type of medical device widely used in dentistry, which can be used to clean teeth and / or grind bad teeth. Dental handpieces cannot be maintained without a dental handpiece oiler. Existing dental handpiece oilers usually use an oil pump to pump lubricating oil into a pipeline, and then use compressed air to transport the lubricating oil into the dental handpiece, thereby lubricating the relevant parts of the dental handpiece; or use a multi-way structure, pump oil into the multi-way structure through an oil pump, and ventilate the multi-way structure through an air intake mechanism. However, this traditional oiling method, because the oil and air cannot be fully mixed, the air entering the dental handpiece contains uneven oil, some with oil and some without oil, which is completely uncontrollable. If you want to fully lubricate the dental handpiece, you usually need to extend the oiling time to inject more lubricating oil, causing most of the lubricating oil to eventually be discharged into the air. This problem is particularly obvious when lubricating multiple dental handpieces, which wastes oil and pollutes the environment. Utility Model Content

[0003] In view of this, the utility model aims to provide a dental handpiece oiling machine which can effectively mix oil and air.

[0004] A dental handpiece oiling machine includes a lubricating oil delivery pipeline, a gas delivery pipeline and an atomizing generator, wherein the atomizing generator is connected to the lubricating oil delivery pipeline and the gas delivery pipeline respectively, the atomizing generator includes a gas acceleration structure for rapidly accelerating the gas from the gas delivery pipeline to form an accelerated airflow, and the atomizing generator also includes an atomizing structure so that the lubricating oil from the lubricating oil delivery pipeline is atomized under the action of the accelerated airflow to form oil mist. The dental handpiece oiling machine also includes a distributor, the distributor includes a plurality of output pipelines, and the plurality of output pipelines are used to be connected to a plurality of dental handpieces respectively to deliver the oil mist to the plurality of dental handpieces.

[0005] Preferably, the atomization generator is provided with a cavity and an oil nozzle arranged in the cavity, the cavity includes a throat formed between the outer wall of the oil nozzle and the inner wall of the cavity, a convergent section located upstream of the throat and an expansion section located downstream of the throat; the convergent section is connected to the gas delivery pipeline, and the oil nozzle is connected to the lubricating oil delivery pipeline; the convergent section and the throat form the gas acceleration structure, and the expansion section forms the atomization structure; the convergent section, throat and expansion section are connected in sequence, so that the gas is rapidly accelerated when it flows from the convergent section through the throat into the expansion section, and negative pressure is generated in the terminal area of ​​the oil nozzle to suck out the lubricating oil, and the sucked out lubricating oil is mixed with the accelerated airflow to form oil mist, which is output to the dental handpiece.

[0006] In some embodiments, the atomizer generator includes a shell and an atomizer core, the cavity is arranged in the shell, the atomizer core includes a body and the fuel nozzle connected to one end of the body, the atomizer generator also includes a gas input channel connected to the gas delivery pipeline and a lubricating oil input channel connected to the lubricating oil delivery pipeline, the gas input channel is arranged between the body and the shell and is connected to the convergent section, and the lubricating oil input channel passes through the body and the fuel nozzle and then connects to the expansion section.

[0007] In some embodiments, there is a convergent transition from the outer surface of the body to the outer surface of the fuel injector, that is, the end surface of the body close to the fuel injector is tapered.

[0008] In some embodiments, a portion of the inner surface of the shell corresponding to the convergent section is convergent.

[0009] In some embodiments, the atomizer core also includes a connecting end connected to the other end of the body, the connecting end is connected to a nozzle through a connecting pipe, the nozzle is connected to the lubricating oil delivery pipeline, the lubricating oil input channel runs through the connecting end and is connected to the pipeline of the connecting pipe, and the inner diameter of the pipeline of the connecting pipe is larger than the inner diameter of the lubricating oil input channel.

[0010] In some embodiments, the atomizer generator also includes a valve body, which is provided with a accommodating chamber and a first opening and a second opening connected to the accommodating chamber, the accommodating chamber is connected to the gas input channel, the gas delivery pipeline is connected to the accommodating chamber through the first opening, the nozzle and the connecting pipe are installed in the accommodating chamber, and one end of the nozzle passes through the second opening and is connected to the lubricating oil delivery pipeline.

[0011] In some embodiments, the lubricating oil delivery pipeline is provided with a one-way valve to prevent the lubricating oil from flowing back.

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

[0013] Preferably, the dental handpiece oiler also includes a distributor, the distributor includes a plurality of output pipelines for respectively connecting to the plurality of dental handpieces, the atomization generator also includes an atomization nozzle, the expansion section passes through the atomization nozzle, and the distributor is connected to the atomization nozzle so that the oil mist generated by the atomization generator is transported to the plurality of dental handpieces via the distributor.

[0014] In some embodiments, the dental handpiece oiler further comprises a base and a cover body detachably mounted on the base, and the lubricating oil delivery pipeline, the gas delivery pipeline and the atomizer generator are mounted on the base.

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

[0016] Compared with the prior art, the dental handpiece oiler of the utility model is provided with an atomizer generator inside the oiler. After the dental oiler is started, the compressed air entering the atomizer generator is rapidly accelerated when it flows from the convergent section through the throat to the expansion section, and negative pressure is generated in the atomizer generator to bring out the lubricating oil. The lubricating oil is broken into mist particles by the high-speed airflow and transported to the part of the dental handpiece that needs lubrication through a pipeline. Because the lubricating oil is broken into mist particles by the high-speed airflow, the oil and gas can be fully mixed, and sufficient lubrication can be achieved by inputting only a small amount of oil. Even lubrication can be achieved for lubricating multiple dental handpieces at the same time. The utility model has a simple structure, generates negative pressure in the atomizer generator to bring out the lubricating oil, and the oil supply system does not need to use an oil pump. The oiler has a long service life, is fully lubricated, and uses less lubricating oil, while greatly reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the principle of a dental handpiece oiling machine according to an embodiment of the present invention.

[0018] Figure 2 The present invention is a structural schematic diagram of a dental handpiece oiling machine according to an embodiment of the present invention.

[0019] Figure 3 for Figure 2 The structure diagram of the dental handpiece oiler with the outer shell removed is shown.

[0020] Figure 4 for Figure 3 A schematic cross-sectional view of an atomizer generator and a solenoid valve of a dental handpiece oiler is shown.

[0021] Figure 5for Figure 4 An enlarged view of the atomizer generator is shown.

[0022] Figure 6 This is a connection diagram between the controller and the solenoid valve. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings exemplarily show one or more embodiments of the present invention so that the understanding of the technical solution disclosed in the present invention is more accurate and thorough. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments described below.

[0024] Figure 1 The utility model is a schematic diagram of the principle of a dental handpiece oiling machine according to an embodiment of the present invention.

[0025] See also Figure 1 A dental handpiece oiler comprises a lubricating oil delivery pipeline 10, a gas delivery pipeline 20 and an atomizer 30 respectively connected to the lubricating oil delivery pipeline 10 and the gas delivery pipeline 20; the atomizer 30 comprises a gas acceleration structure for rapidly accelerating the gas from the gas delivery pipeline 20 to form an accelerated airflow, and the atomizer 30 also comprises an atomization structure so that the lubricating oil from the lubricating oil delivery pipeline 10 is atomized under the action of the accelerated airflow to form oil mist.

[0026] Specifically, a cavity and a fuel nozzle 342 entering the cavity are provided in the atomizing generator 30, the cavity includes a throat 322 formed between an inner wall of the cavity and an outer wall of the fuel nozzle 342, a convergent section 324 located upstream of the throat, and an expansion section 326 located downstream of the throat 322, the convergent section 326 is connected to the gas delivery pipeline 20, and the fuel nozzle 342 is connected to the lubricating oil delivery pipeline 10. The convergent section 326 and the throat 322 form a gas acceleration structure, and the expansion section 326 forms an atomization structure; the convergent section 324, the throat 322 and the expansion section 326 are sequentially connected along the flow direction of the airflow, with a large front end space, a small middle space and a large rear end space, forming a Laval nozzle structure, so that the gas is rapidly accelerated when flowing from the convergent section 324 through the throat 322 into the expansion section 326, and a negative pressure is generated in the area near the end of the oil nozzle 342 (the area of ​​the expansion section 326 close to the end of the oil nozzle 342) to suck out the lubricating oil from the oil nozzle 342, and the lubricating oil entering the expansion section 326 is blown away by the accelerated airflow to form fine particles and fully mixed with the accelerated airflow to form oil mist, and is output to the dental handpiece 40 through the expansion section 326.

[0027] The cross-sectional area of ​​the convergent section 324 gradually decreases in a direction approaching the throat portion 322. In this embodiment, the inner wall surface of the convergent section 324 is a conical surface.

[0028] The cross-sectional area of ​​the expansion section 326 is greater than the cross-sectional area of ​​the throat 322. In the present embodiment, the inner wall surface of the expansion section 326 is a cylindrical surface, and its inner diameter is uniformly arranged along the length direction, or the inner wall surface is trumpet-shaped, and its inner diameter gradually increases in the direction away from the throat, the fuel injection nozzle 342 is a circular tube, and the cross-sectional area of ​​the throat 322 is annular. Preferably, the cross-sectional area of ​​the expansion section 326 is more than 2 times the cross-sectional area of ​​the throat 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.

[0029] Preferably, the dental handpiece oiling machine further comprises a distributor 50, and the distributor comprises a plurality of output pipelines 52, which are respectively connected to a plurality of dental handpieces 42. The distributor 50 is connected to the atomization generator 30, so that the atomized oil generated by the atomization generator 30 is delivered to the plurality of dental handpieces 40 via the distributor 50. Preferably, the dental handpiece 40 is connected to the output pipeline 52 of the distributor 50 through a quick connector 42, so as to facilitate the disassembly and assembly of the dental handpiece 40.

[0030] See also Figure 2 and Figure 3 The dental handpiece oiler also includes a housing 100, and the lubricating oil delivery pipeline 10, the gas delivery pipeline 20, the atomizer 30, the dental handpiece 40 and the distributor 50 are all installed in the housing 100. Specifically, the housing 100 includes a base 110 and a cover 120, and the cover 120 is detachably installed on the base 110. A storage space is formed between the cover 120 and the base 110, and the lubricating oil delivery pipeline 10, the gas delivery pipeline 20, the atomizer 30, the dental handpiece 40 and the distributor 50 are all accommodated in the storage space. When the dental handpiece 40 needs maintenance, the cover 120 can be opened, and the dental handpiece 40 can be connected to the distributor 50 respectively for maintenance.

[0031] See also Figure 4 and Figure 5, the atomizer generator 30 includes a shell 32 and an atomizer core 34 accommodated in the shell 32. A cavity is provided in the shell 32, and the atomizer core 34 includes a body 344, a fuel nozzle 342 located at one end of the body 344, and a connecting end 346 located at the other end of the body 344. The cavity includes a throat 322 formed between the inner wall of the cavity and the outer wall of the fuel nozzle 342, a convergent section 324 located upstream of the throat, and an expansion section 326 located downstream of the throat 322. The upstream and downstream in this article are determined according to the flow direction of the fluid. The convergent section 324 includes a convergent end (narrower inner diameter end) close to the throat 322 and an open end (wider inner diameter end) away from the throat 322. The body 344 is received in the open end of the convergent section 324, and the fuel injection nozzle 342 is inserted into the expansion section 326 after passing through the convergent end of the convergent section 324, so that a throat 322 is formed between the outer surface of the fuel injection nozzle 342 and the inner surface of the housing 32, and the throat 322 is located at the connection between the convergent end of the convergent section 324 and the expansion section 326. The cross-sectional area of ​​the convergent section 324 gradually decreases in the direction close to the throat 322, and the cross-sectional area of ​​the expansion section 326 is larger than the cross-sectional area of ​​the throat 322. In this way, from the convergent section 324 to the expansion section 326, the cross-sectional area of ​​the flow channel decreases sharply at the throat 322, and then increases sharply after passing through the throat 322 (i.e., downstream of the throat 322), forming a Laval nozzle structure.

[0032] Preferably, the outer diameter of the body 344 is larger than the outer diameter of the fuel injector 342 and the connecting end 346, and the outer surface of the body 344 is preferably connected to the outer surface of the fuel injector 342 by an inclined surface, and the inclined surface is opposite to the inclined surface of the convergent section 324. A gas input channel 36 is provided between the body 344 and the shell 32, and the gas input channel 36 is connected to the convergent section 324. In this embodiment, the gas input channel 36 is provided on the body 344. A lubricating oil input channel 38 is provided in the center of the atomizing core 34, and the lubricating oil input channel 38 passes through the connecting end 346, the body 344 and the fuel injector 342 in sequence. The connecting end 346 of the atomizing core 34 is connected to the nozzle 349 through a connecting pipe 348, and the inner diameter of the connecting pipe 348 is larger than the inner diameter of the lubricating oil input channel 38.

[0033] The atomizer generator further includes a valve body 39, which is sealed and connected to the housing 32. The valve body 39 is provided with a housing chamber 392 and a first opening 394 and a second opening 396 communicating with the housing chamber 392. The gas delivery pipeline 20 is communicated with the first opening 394, and the gas input channel 36 communicates with the housing chamber 392 and the convergent section 324. The nozzle 349 and the connecting pipe 348 are installed in the housing chamber 392, and one end of the nozzle 349 passes through the second opening 396 and communicates with the lubricating oil delivery pipeline 10. Preferably, the inner diameter of the connecting pipe 348 is larger than the inner diameter of the nozzle 349, so that the connecting pipe 348 is sleeved on the outer periphery of the nozzle 349.

[0034] The atomizing generator 30 further includes an atomizing nozzle 35, which is formed at one end of the housing 32 away from the valve body 39. The expansion section 326 penetrates the atomizing nozzle 35, and the distributor 50 is connected to the atomizing nozzle 35 through a connecting pipeline, so that the oil mist generated by the atomizing generator 30 is delivered to the plurality of dental handpieces 40 via the distributor 50 and the output pipeline 52.

[0035] The dental handpiece oiler further comprises a solenoid valve 22 connected between the gas delivery pipeline 20 and the atomizer generator 30, and the opening time of the solenoid valve 22 can be adjusted as required. Figure 6 , a controller 80 may also be provided, the controller 80 is electrically connected to the solenoid valve 22, and the opening time of the solenoid valve 12 is controlled by the controller 80. For example, for a dental handpiece with a complex structure, a mode may be selected, in which the controller 80 controls the opening time of the solenoid valve 12 to be relatively longer, such as 2 to 3 seconds, etc.; for a dental handpiece with a simple structure, another mode may be selected, in which the controller 80 controls the opening time of the solenoid valve 22 to be relatively shorter, such as 1 to 2 seconds, etc.

[0036] The lubricating oil delivery pipeline 10 is provided with a one-way valve 12 to prevent the lubricating oil from flowing back.

[0037] The following is a detailed description of the oil and gas control principle of the dental handpiece oiler:

[0038] When compressed air enters the atomizer generator 30 through the solenoid valve 22, negative pressure is generated in the atomizer generator 30, and the lubricating oil flows into the atomizer generator 30 through the one-way valve 12 under atmospheric pressure, and mixes with the compressed air to form oil mist. The oil mist reaches the quick connector 42 through the distributor 50, and then flows to the dental handpiece 40 to lubricate the handpiece components.

[0039] Specifically, when the compressed air enters the accommodating chamber 392 of the atomizer generator 30 through the solenoid valve 22, and then enters the convergent section 324 through the gas input channel 36, since the throat 322 has a small annular space with a large front end space, a small middle space, and a large rear end space, when the compressed air reaches the front end of the annular space, i.e., the convergent section 324, the flow rate is relatively small and the pressure increases. When flowing through the throat 322, the air flow speed increases. When flowing through the expansion section 326, the gas expands rapidly, the air flow speed further increases, and negative pressure is generated near the fuel injector 342. The lubricating oil enters the atomizer generator 30 under atmospheric pressure and flows out of the fuel injector 34. The lubricating oil flowing out of the fuel injector 34 encounters a high-speed airflow and is rapidly blown away to form fine particles, and mixed with the high-speed airflow to form oil mist.

[0040] The dental handpiece oiling machine of the utility model has an atomizer generator disposed inside the oiling machine. After the dental oiling machine is started, the compressed air entering the atomizer generator is rapidly accelerated when flowing from the convergent section through the throat and the expansion section. At the same time, negative pressure is generated in the atomizer generator to bring out the lubricating oil. The lubricating oil is broken into mist particles by the high-speed airflow and transported to the part of the dental handpiece that needs lubrication through a pipeline. Because the lubricating oil is broken into mist particles by the high-speed airflow, the oil and gas can be fully mixed, and sufficient lubrication can be achieved by inputting only a small amount of oil. Even lubrication can be achieved for lubricating multiple dental handpieces at the same time. The utility model has a simple structure, generates negative pressure in the atomizer generator to bring out the lubricating oil, and the oil supply system does not need to use an oil pump. The oiling machine has a long service life, is fully lubricated, and uses a small amount of lubricating oil. At the same time, the pollution to the environment is greatly reduced.

[0041] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. A dental handpiece oiling machine, comprising a lubricating oil delivery pipeline and a gas delivery pipeline, characterized in that: The dental handpiece oiler also includes an atomizer generator, which is connected to the lubricating oil delivery pipeline and the gas delivery pipeline respectively, and includes a gas acceleration structure for rapidly accelerating the gas from the gas delivery pipeline to form an accelerated airflow. The atomizer generator also includes an atomization structure so that the lubricating oil from the lubricating oil delivery pipeline is atomized under the action of the accelerated airflow to form oil mist. The dental handpiece oiler also includes a distributor, which includes a plurality of output pipelines, and the plurality of output pipelines are used to be connected to a plurality of dental handpieces respectively to deliver the oil mist to the plurality of dental handpieces.

2. The dental handpiece oiling machine according to claim 1, characterized in that: The atomizing generator is provided with a cavity and a fuel injection nozzle arranged in the cavity, wherein the cavity comprises a throat formed between an outer wall of the fuel injection nozzle and an inner wall of the cavity, a convergent section located upstream of the throat, and an expansion section located downstream of the throat; The convergent section is in communication with the gas delivery pipeline, and the oil injection nozzle is in communication with the lubricating oil delivery pipeline; The convergent section and the throat form the gas acceleration structure, and the expansion section forms the atomization structure; The convergent section, throat and expansion section are connected in sequence, so that the gas is rapidly accelerated when it flows from the convergent section through the throat into the expansion section, and negative pressure is generated in the end area of ​​the oil nozzle to suck out the lubricating oil. The sucked out lubricating oil is mixed with the accelerated airflow to form oil mist, which is output to the dental handpiece.

3. The dental handpiece oiling machine according to claim 2, characterized in that: The atomizer generator includes a shell and an atomizer core, the cavity is arranged in the shell, the atomizer core includes a body and the oil nozzle connected to one end of the body, the atomizer generator also includes a gas input channel connected to the gas delivery pipeline and a lubricating oil input channel connected to the lubricating oil delivery pipeline, the lubricating oil input channel passes through the body and the oil nozzle and then communicates with the expansion section, and the gas input channel is arranged at the periphery of the lubricating oil input channel and communicates with the convergence section.

4. The dental handpiece oiling machine according to claim 3, characterized in that: There is a convergent transition from the outer surface of the body to the outer surface of the fuel injection nozzle; and The portion of the inner surface of the shell corresponding to the convergent section is in a convergent shape.

5. The dental handpiece oiling machine according to claim 3, characterized in that: The atomizer core also includes a connecting end connected to the other end of the body, the connecting end is connected to a nozzle through a connecting pipe, the nozzle is connected to the lubricating oil delivery pipeline, the lubricating oil input channel runs through the connecting end and is connected to the pipeline of the connecting pipe, and the inner diameter of the pipeline of the connecting pipe is larger than the inner diameter of the lubricating oil input channel.

6. The dental handpiece oiling machine according to claim 5, characterized in that: The atomizer generator also includes a valve body, which is provided with a accommodating chamber and a first opening and a second opening connected to the accommodating chamber. The accommodating chamber is connected to the gas input channel, and the gas delivery pipeline is connected to the accommodating chamber through the first opening. The nozzle and the connecting pipe are installed in the accommodating chamber, and one end of the nozzle passes through the second opening and is connected to the lubricating oil delivery pipeline.

7. The dental handpiece oiling machine according to claim 6, characterized in that: The lubricating oil delivery pipeline is provided with a one-way valve to prevent the lubricating oil from flowing back.

8. The dental handpiece oiling machine according to any one of claims 2 to 7, characterized in that: The atomizing generator further comprises an atomizing nozzle, the expansion section penetrates the atomizing nozzle, and the distributor is connected to the atomizing nozzle; or The cross-sectional area of ​​the expansion section is more than twice the cross-sectional area of ​​the throat; or The cross-sectional area of ​​the expansion section is more than three times the cross-sectional area of ​​the throat.

9. The dental handpiece oiling machine according to any one of claims 1 to 7, characterized in that: The dental handpiece oiling machine further comprises a base and a cover body detachably mounted on the base, and the lubricating oil delivery pipeline, the gas delivery pipeline and the atomization generator are mounted on the base.

10. The dental handpiece oiling machine according to any one of claims 1 to 7, characterized in that: The gas delivery pipeline is provided with a solenoid valve, and the dental handpiece oiling machine further comprises a controller, and the controller is electrically connected to the solenoid valve to control the opening and closing of the solenoid valve.

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