A multifunctional dental extraoral suction machine

Abstract

The multifunctional dental extraoral suction machine disclosed in the present invention has multiple functions. In addition to the function of sucking the droplets discharged by the patient, the suctioned droplets can be filtered to remove particles and debris, and can be disinfected and sterilized by ultraviolet lamp. The universal threaded tube can rotate 360 ​​degrees, which is convenient for the staff to adjust the suction arm. At the same time, the dental extraoral suction machine can also provide gas with a predetermined pressure for the sandblasting machine, so that there is no need to purchase an additional compressor to provide gas for the sandblasting machine, which effectively reduces the cost. In addition, the water tank of the dental extraoral suction machine can be movably arranged in the pull-out port on the side wall of the suction machine body, which is convenient for cleaning and replacement of the water tank, can meet the high quality requirements of users, and greatly improves the user experience.

Description

Technical Field

[0001] The invention relates to the technical field of dental extraoral suction machines, in particular to a multifunctional dental extraoral suction machine. Background Art

[0002] At present, when the staff performs dental treatment on the patient, the patient will discharge droplets from the mouth. If these droplets are not dealt with in time, they will cause pollution to the staff and the surrounding environment. Therefore, dental extraoral suction machines have appeared on the market, and the staff can use dental extraoral suction machines to suction the droplets discharged by the patient.

[0003] However, the dental extraoral suction machines on the market are only used to suction droplets, which makes the functions of the dental extraoral suction machines single and unable to meet the high-quality requirements of users, thus greatly reducing the user experience. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a multifunctional dental extraoral suction machine, which has multiple functions. In addition to the function of sucking the droplets discharged by the patient, it can also disinfect and sterilize the sucked droplets. At the same time, it can also provide gas with a predetermined pressure for the sandblasting machine, which can meet the high quality requirements of users and greatly improve the user experience.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a multifunctional dental extraoral suction machine, including a suction machine body, a first tube body with one end arranged on the top of the suction machine body, a second tube body with one end rotatably connected to the other end of the first tube body, a third tube body with one end rotatably connected to the other end of the second tube body, an exhaust fan and a compressor, characterized in that it also includes: a universal threaded tube, one end of which is threadedly connected to the other end of the third tube body; a water tank box, arranged in the receiving cavity of the suction machine body, wherein the top of the water tank box is provided with a first through hole connected to the first tube body, the side wall of the water tank box is provided with a first output port, and an ultraviolet lamp for sterilization and disinfection is provided in the water tank box; a filter layer is provided In the water tank box, wherein the filter layer is arranged between the first through hole and the first output port of the water tank box, and the exhaust fan is arranged on the side wall of the water tank box, and the input port of the exhaust fan is connected with the first output port of the water tank box; at least one water tank is movably arranged in the pull-out port of the side wall of the suction machine body, wherein the water tank is connected with the output pipe of the exhaust fan; a gas collecting bottle is connected with the output port of the compressor through a first hose; wherein a planar support plate is provided on the top of the suction machine body, the gas collecting bottle and the compressor are arranged in the accommodating cavity of the suction machine body, and a gas output interface is provided on the side wall of the suction machine body, and the gas collecting bottle is connected with the gas output interface through a second hose.

[0006] Furthermore, it also includes: a suction port, one end of which is threadedly connected to the other end of the universal threaded tube, wherein the suction port includes a truncated cone-shaped suction port body and a connector threadedly connected to the other end of the universal threaded tube; wherein the suction port body is provided with a truncated cone-shaped trumpet hole, the connector is provided with a circular connecting hole, and an isolation plate is provided at the connection between the suction port body and the connector to isolate the trumpet hole and the connecting hole, and a plurality of flow holes are arranged at intervals in the isolation plate.

[0007] Furthermore, a first guardrail structure and a second guardrail structure are symmetrically arranged on both sides of the support plate, wherein the first tube body is arranged on one side of the support plate, and a touch display screen is arranged on one side of the support plate.

[0008] Furthermore, a third guardrail structure is provided on the edge of the support plate, wherein the third guardrail structure is provided between the first guardrail structure and the second guardrail structure.

[0009] Furthermore, the cross-sectional area of ​​the support plate in the horizontal direction is larger than the cross-sectional area of ​​the suction machine body in the horizontal direction.

[0010] Furthermore, it also includes: a fixed frame, which is arranged on one side of the water tank box, wherein the exhaust fan is arranged in the fixed frame, a second through hole for accommodating the output pipe of the exhaust fan is provided on the side of the fixed frame away from the water tank box, and the side wall of the fixed frame is provided with a sound insulation and sound absorbing material layer.

[0011] Furthermore, a drainage frame is provided in the water tank box below the first through hole, wherein a drainage opening is provided on a side of the drainage frame away from the filter layer, and the drainage frame is further provided with a drainage plate below the drainage opening.

[0012] Furthermore, it also includes: a receiving frame, which is movably arranged in the pull-out opening of the side wall of the suction machine body, wherein the top of the receiving frame is provided with a receiving groove, the at least one water tank is arranged in the receiving groove, and one of the side walls of the pull-out opening and the side walls of the receiving frame is provided with a first slide rail along its length direction, and the other of the side walls of the pull-out opening and the side walls of the receiving frame is provided with a first slider which can be slidably arranged in the first slide rail.

[0013] Furthermore, a switch valve is provided in the first hose and / or the second hose, and a first socket electrically connected to the suction machine body, the blower and the compressor is provided on the side wall of the suction machine body.

[0014] Furthermore, the side wall of the suction machine body is provided with a second socket spaced apart from the first socket, wherein the first socket is provided with a first live wire hole and a first neutral wire hole, and the second socket is provided with a second live wire hole connected in parallel with the first live wire hole and a second neutral wire hole connected in parallel with the first neutral wire hole.

[0015] The beneficial effects of the present invention are as follows: different from the prior art, the multifunctional dental extraoral suction machine disclosed in the present invention has multiple functions. In addition to the function of suctioning the droplets discharged by the patient, the suctioned droplets can also be filtered to remove particles and debris, and can also be disinfected and sterilized by ultraviolet lamps. The universal threaded tube can rotate 360 ​​degrees, which is convenient for the staff to adjust the suction arm. At the same time, the dental extraoral suction machine can also provide gas with a predetermined pressure for the sandblasting machine, so that there is no need to purchase an additional compressor to provide gas to the sandblasting machine, which effectively reduces costs. In addition, the water tank of the dental extraoral suction machine can be movably arranged in the pull-out port on the side wall of the suction machine body, which is convenient for cleaning and replacement of the water tank, can meet the high quality requirements of users, and greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the multifunctional dental extraoral suction machine of the present invention;

[0017] Figure 2 yes Figure 1 A schematic diagram of the first partial structure of the multifunctional dental extraoral suction machine;

[0018] Figure 3 yes Figure 1 A second partial structural diagram of the multifunctional dental extraoral suction machine;

[0019] Figure 4 yes Figure 1 A schematic diagram of the structure of the suction arm of the multifunctional dental extraoral suction machine;

[0020] Figure 5 yes Figure 1 A schematic diagram of the structure of the suction port of the multifunctional dental extraoral suction machine;

[0021] Figure 6 yes Figure 1 A schematic diagram of the third partial structure of the multifunctional dental extraoral suction machine;

[0022] Figure 7 yes Figure 1 A schematic diagram of the fourth partial structure of the multifunctional dental extraoral suction machine;

[0023] Figure 8 yes Figure 1 A fifth partial structural diagram of the multifunctional dental extraoral suction machine;

[0024] Fig. 9 yes Figure 1 Schematic diagram of the sixth partial structure of the multifunctional dental extraoral suction machine. DETAILED DESCRIPTION

[0025] See also Figure 1-9 The multifunctional dental extraoral suction machine includes a suction machine body 10, a first tube body 111, a second tube body 112, a third tube body 113, a universal threaded tube 114, a suction port 115, a water tank box 12, a filter layer 13, an exhaust fan 14, at least one water tank 15, a compressor 16 and a gas collection bottle 17.

[0026] One end of the first tube body 111 is arranged at the top of the suction machine body 10, one end of the second tube body 112 is rotatably connected to the other end of the first tube body 111, one end of the third tube body 113 is rotatably connected to the other end of the second tube body 112, one end of the universal threaded tube 114 is threadedly connected to the other end of the third tube body 113, and one end of the suction port 115 is threadedly connected to the other end of the universal threaded tube 114.

[0027] It should be understood that the suction port 115 is used to be close to the patient's mouth to suck the droplets discharged by the patient. The outer wall of the universal threaded tube 114 is provided with threads along its length direction. Since the outer wall of the universal threaded tube 114 is provided with threads, the universal threaded tube 114 can rotate in all directions, that is, the universal threaded tube 114 can adjust the angle by 360 degrees, so that the suction port 115 can adjust the angle by 360 degrees.

[0028] It should be understood that, in the present embodiment, the first tube body 111, the second tube body 112, the third tube body 113, the universal threaded tube 114 and the suction port 115 constitute the suction arm of the dental extraoral suction machine for suctioning droplets.

[0029] In this embodiment, the suction port 115 includes a suction port body 1151 in a truncated cone shape and a connecting body 1152 threadedly connected to the other end of the universal threaded tube 114 .

[0030] Preferably, the suction port body 1151 is provided with a truncated cone-shaped trumpet hole, and the connecting body 1152 is provided with a circular communicating hole. It should be understood that the connecting body 1152 is arranged at the end of the suction port body 1151 with a smaller outer diameter, that is, the outer diameter of the end of the suction port body 1151 close to the connecting body 1152 is smaller than the outer diameter of the other end of the suction port body 1151 away from the connecting body 1152.

[0031] In this embodiment, an isolation plate 1153 is provided at the connection between the suction port body 1151 and the connecting body 1152 to isolate the horn hole and the connecting hole, and a plurality of flow holes 1154 are arranged at intervals in the isolation plate 1153 to block larger debris through the isolation plate 1153, while the droplets enter the suction arm through the flow holes 1154, thereby not affecting the suction effect of the suction arm, thereby effectively improving the user experience.

[0032] Preferably, the inner diameter of the flow hole 1154 is in the range of 10-15 mm. It should be understood that in this embodiment, the isolation plate 1153 can block debris larger than 15 mm, which can prevent the larger debris from entering the suction arm and clogging the suction arm, and can also facilitate cleaning.

[0033] In this embodiment, a receiving cavity is provided inside the suction machine body 10, and further, a planar support plate 101 is provided on the top of the suction machine body 10. It should be understood that since the support plate 11 is planar, the upper position of the support plate 11 can be used to hold items, so that the space utilization rate of the top surface of the dental extraoral suction machine is high, which effectively improves the user experience.

[0034] Furthermore, the first tube 111 is disposed on one side of the support plate 101 , so that the support plate 101 can hold more items.

[0035] In the present embodiment, the area of ​​the horizontal cross section of the support plate 101 is larger than the area of ​​the horizontal cross section of the suction machine body 10 , so that more objects can be placed.

[0036] Furthermore, a touch screen is provided on one side of the support plate 101 , and the touch screen and the first tube 111 are arranged on the same side of the support plate 101 , so that the support plate 101 has more space for placing items.

[0037] It should be understood that the touch display screen of this embodiment is provided with a power button for controlling the on and off of the dental extraoral suction machine, a first button for controlling the operation of the exhaust fan, and a second button for controlling the operation of the compressor.

[0038] In this embodiment, the support plate 101 includes a metal layer disposed close to the suction machine body 10 and an organic glass layer disposed on the metal layer. It should be understood that the metal layer is mainly used to increase the load-bearing strength.

[0039] In this embodiment, the first guardrail structure and the second guardrail structure are symmetrically arranged on both sides of the support plate 101. Specifically, the first guardrail structure is arranged on the edge of one side of the top surface of the support plate 101, and the second guardrail structure is arranged on the edge of the other side of the top surface of the support plate 101. It should be understood that the first guardrail structure and the second guardrail structure are used to stop objects so that the objects placed on the support plate 101 are not easy to fall off the support plate 101.

[0040] Furthermore, a third guardrail structure is also provided on the edge of the support plate 101, wherein the third guardrail structure is provided between the first guardrail structure and the second guardrail structure. It should be understood that the first guardrail structure, the second guardrail structure and the third guardrail structure form a frame for accommodating articles.

[0041] In this embodiment, the first guardrail structure includes a first support rod 1011 and a second support rod 1012 spaced apart on the edge of one side of the top surface of the support plate 101 and a first long railing 1013 arranged at the top of the first support rod 1011 and the top of the second support rod 1012.

[0042] Furthermore, the second guardrail structure includes a third support rod 1014 and a fourth support rod 1015 spaced apart on the edge of the other side of the top surface of the support plate 101 and a second long railing 1016 arranged at the top of the third support rod 1014 and the top of the fourth support rod 1015.

[0043] Furthermore, the third guardrail structure includes a fifth support rod 1017 and a sixth support rod 1018 spaced apart on the edge of the top surface of the support plate 11 and a third long railing 1019 arranged at the top of the fifth support rod 1017 and the top of the sixth support rod 1018 .

[0044] Preferably, the first long railing 1013 and the second long railing 1016 are arranged in parallel, and the third long railing 1019 is arranged perpendicular to the first long railing 1013 and the second long railing 1016 .

[0045] The water tank box 12 is disposed in the receiving cavity of the suction machine body 10 , wherein a first through hole communicating with the first tube body 111 is disposed on the top of the water tank box 12 , so that the droplets sucked by the first tube body 111 enter the water tank box 12 from the first through hole.

[0046] In this embodiment, a first outlet is disposed on the side wall of the water tank box 12 to discharge the splashes in the water tank box 12 through the first outlet.

[0047] The filter layer 13 is disposed in the water tank box 12, wherein the filter layer 13 is disposed between the first through hole and the first output port of the water tank box 12, so as to filter the gas and debris in the water tank box 12 through the filter layer 13. It should be understood that the suction arm will suck the droplets, particles and debris, and these droplets, particles and debris are filtered by the filter layer 13, so that only the gas can pass through the filter layer 13, while the particles and debris remain in the water tank box 12.

[0048] In this embodiment, a drainage frame 121 is provided in the water tank box 12 and is located below the first through hole, wherein a drainage opening 122 is provided on the side of the drainage frame 121 away from the filter layer 13, so that the droplets sucked by the first tube body 111 flow into the water tank box 12 from the drainage opening 122, so that the droplets are evenly distributed in the water tank box 12.

[0049] Furthermore, the drainage frame 121 is further provided with a drainage plate 1221 below the drainage opening 122 , so that water flows from the drainage plate 1221 into the water tank box 12 .

[0050] In this embodiment, an ultraviolet lamp for sterilization is provided in the water tank box 12, so that the water tank box 12 is sterilized by the ultraviolet lamp, so that the gas discharged from the water tank box 12 is not easy to pollute the environment.

[0051] The exhaust fan 14 is disposed on the side wall of the water tank box 12 , wherein an input port of the exhaust fan 14 is communicated with a first output port of the water tank box 12 , so that the gas in the water tank box 12 can be extracted by the exhaust fan 14 .

[0052] Furthermore, the multifunctional dental extraoral suction machine further comprises a fixing frame 141, wherein the fixing frame 141 is arranged on one side of the water tank box 12, and the exhaust fan 14 is arranged in the fixing frame 141. In this embodiment, a second through hole for accommodating an output pipe 140 of the exhaust fan 14 is provided on one side of the fixing frame 141 away from the water tank box 12, and a sound insulation and silencing material layer is provided on the side wall of the fixing frame.

[0053] Preferably, a sound insulation and sound absorbing material layer is provided on the side wall of the fixing frame 141 to soundproof and silence the noise generated by the exhaust fan 14 through the sound insulation and sound absorbing material layer.

[0054] In this embodiment, a first mounting plate 123 and a second mounting plate 124 are spaced apart at the top and bottom of one side of the water tank box 12 , wherein the fixing frame 141 is disposed between the first mounting plate 123 and the second mounting plate 124 .

[0055] At least one water tank 15 is movably disposed in the draw-in opening of the side wall of the suction machine body 10, wherein the water tank 15 is connected to the output pipe 140 of the exhaust fan 14, so that the gas sucked away by the exhaust fan 14 enters the water tank 15, and the gas is cooled in the water tank 15 to form water.

[0056] In this embodiment, the multifunctional dental extraoral suction machine further comprises a receiving frame 18, which is movably disposed in the draw-out opening of the side wall of the suction machine body 10, wherein a receiving groove 181 is disposed at the top of the receiving frame 18, and at least one water tank 15 is disposed in the receiving groove 181. It should be understood that since the receiving frame 18 is movably disposed in the draw-out opening of the side wall of the suction machine body 10, and at least one water tank 15 is disposed in the receiving groove 181 of the receiving frame 18, when the water tank 15 needs to be cleaned, replaced or repaired, the receiving frame 18 can be directly pulled out of the draw-out opening to bring out the water tank 15, which is convenient for cleaning, replacement and repair of the water tank 15, and the operation is convenient, which greatly improves the user experience.

[0057] In this embodiment, one of the side walls of the drawer opening and the side walls of the receiving frame 18 is provided with a first slide rail 182 along its length direction, and the other of the side walls of the drawer opening and the side walls of the receiving frame 18 is provided with a first slider that can be slidably set in the first slide rail 182.

[0058] Preferably, a first slide rail 182 is provided on one side wall of the drawer opening along its length direction, and a first slider that can be slidably arranged in the first slide rail 182 is provided on one side wall of the receiving frame 18. Of course, in other embodiments, a first slide rail 182 is provided on one side wall of the receiving frame 18 along its length direction, and a first slider that can be slidably arranged in the first slide rail 182 is provided on one side wall of the drawer opening.

[0059] Furthermore, in the present embodiment, one of the other side wall of the drawer opening and the other side wall of the receiving frame 18 is provided with a second slide rail 183 along its length direction, and the other of the other side wall of the drawer opening and the other side wall of the receiving frame 18 is provided with a second slider which can be slidably arranged in the second slide rail 183.

[0060] Preferably, the other side wall of the drawer opening is provided with a second slide rail 183 along its length direction, and the other side wall of the receiving frame 18 is provided with a second slider slidably arranged in the second slide rail 183. Of course, in other embodiments, the other side wall of the receiving frame 18 is provided with a second slide rail 183 along its length direction, and the other side wall of the drawer opening is provided with a second slider slidably arranged in the second slide rail 183.

[0061] Specifically, the first slide rail 182 includes a first slide rod arranged on one side wall of the drawing port, the first slider is provided with a first through hole, and the first slide rod is passed through the first through hole, and the second slide rail 183 includes a second slide rod arranged on the other side wall of the drawing port, the second slider is provided with a second through hole, and the second slide rod is passed through the second through hole.

[0062] The gas collection bottle 17 is connected to the output port of the compressor 16 through the first hose. Preferably, the gas collection bottle 17 and the compressor 16 are arranged in the receiving cavity of the suction machine body 10. It should be understood that the compressor 16 is used to compress the gas, and the gas collection bottle 17 can collect the gas with a predetermined pressure output by the compressor 16 through the first hose.

[0063] In this embodiment, a gas output interface 102 is provided on the side wall of the suction machine body 10 , wherein the gas collection bottle 17 is connected to the gas output interface 102 via a second hose, so as to output the gas outputted by the gas collection bottle 12 via the gas output interface 106 .

[0064] It should be understood that since the gas output interface 102 can output gas with a predetermined pressure, when the sandblasting machine needs to use gas with a predetermined pressure, the connecting pipe is directly inserted into the gas output interface 102 so that the gas collection bottle 17 outputs gas with a predetermined pressure for the sandblasting machine, so that there is no need to purchase an additional compressor, the cost is greatly reduced, and the space occupied is relatively reduced, which is not easy to affect the work of the staff.

[0065] Preferably, a switch valve is provided in the first hose and / or the second hose to control the opening and closing of the first hose and / or the second hose through the switch valve.

[0066] In this embodiment, the side wall of the suction machine body 10 is provided with a first socket 103 electrically connected to the suction machine body 10 and the compressor 16. That is, the suction machine body 10, the exhaust fan 14 and the compressor 16 can be powered by plugging an external power supply into the first socket 103.

[0067] Further, the side wall of the suction machine body 10 is provided with a second socket 104 spaced apart from the first socket 103, wherein the first socket 103 and the second socket 104 are arranged in parallel. It should be understood that since the first socket 103 and the second socket 104 are arranged in parallel, other devices can also be powered by the second socket 104, such as a sandblasting machine, so that the suction machine body 10 further has the function of powering other devices.

[0068] Specifically, the first socket 103 is provided with a first live wire hole and a first neutral wire hole, and the second socket 104 is provided with a second live wire hole connected in parallel with the first live wire hole and a second neutral wire hole connected in parallel with the first neutral wire hole.

[0069] In summary, the multifunctional dental extraoral suction machine disclosed in the present invention has multiple functions. In addition to the function of suctioning the droplets discharged by the patient, the suctioned droplets can also be filtered to remove particles and debris, and can also be disinfected and sterilized by ultraviolet lamp. The universal threaded tube can rotate 360 ​​degrees, which is convenient for the staff to adjust the suction arm. At the same time, the dental extraoral suction machine can also provide gas with a predetermined pressure for the sandblasting machine, so that there is no need to purchase an additional compressor to provide gas for the sandblasting machine, which effectively reduces the cost. In addition, the water tank of the dental extraoral suction machine can be movably arranged in the pull-out port on the side wall of the suction machine body, which is convenient for cleaning and replacement of the water tank, can meet the high quality requirements of users, and greatly improves the user experience.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multifunctional dental extraoral suction machine, comprising a suction machine body, a first tube body with one end arranged on the top of the suction machine body, a second tube body with one end rotatably connected to the other end of the first tube body, a third tube body with one end rotatably connected to the other end of the second tube body, a suction fan and a compressor, characterized in that: Also includes: A universal threaded tube, one end of which is threadedly connected to the other end of the third tube body; A water tank box is arranged in the receiving cavity of the suction machine body, wherein the top of the water tank box is provided with a first through hole connected to the first tube body, the side wall of the water tank box is provided with a first output port, and an ultraviolet lamp for sterilization and disinfection is arranged in the water tank box; A filter layer is arranged in the water tank box, wherein the filter layer is arranged between the first through hole and the first output port of the water tank box, and the exhaust fan is arranged on the side wall of the water tank box, and the input port of the exhaust fan is connected to the first output port of the water tank box; At least one water tank is movably disposed in a drawer opening of a side wall of the suction machine body, wherein the water tank is connected to an output pipe of the suction machine; A gas collection bottle, connected to the output port of the compressor through a first hose; Wherein, a planar support plate is provided on the top of the suction machine body, the gas collection bottle and the compressor are arranged in the receiving cavity of the suction machine body, a gas output interface is provided on the side wall of the suction machine body, and the gas collection bottle is connected to the gas output interface through a second hose; It also includes: a suction port, one end of which is threadedly connected to the other end of the universal threaded tube, wherein the suction port includes a suction port body in a truncated cone shape and a connector threadedly connected to the other end of the universal threaded tube; wherein the suction port body is provided with a truncated cone-shaped trumpet hole, the connector is provided with a circular connecting hole, and a separation plate is provided at the connection between the suction port body and the connector to isolate the trumpet hole and the connecting hole, and a plurality of flow holes are arranged at intervals in the separation plate; A first guardrail structure and a second guardrail structure are symmetrically arranged on both sides of the support plate, wherein the first tube body is arranged on one side of the support plate, and a touch display screen is arranged on one side of the support plate; It also includes: a fixing frame, which is arranged on one side of the water tank box, wherein the exhaust fan is arranged in the fixing frame, a second through hole for accommodating the output pipe of the exhaust fan is arranged on a side of the fixing frame away from the water tank box, and a sound insulation and sound absorbing material layer is arranged on the side wall of the fixing frame; It also includes: a receiving frame, which is movably arranged in the pull-out opening of the side wall of the suction machine body, wherein the top of the receiving frame is provided with a receiving groove, the at least one water tank is arranged in the receiving groove, and one of the side walls of the pull-out opening and the side walls of the receiving frame is provided with a first slide rail along its length direction, and the other of the side walls of the pull-out opening and the side walls of the receiving frame is provided with a first slider which can be slidably arranged in the first slide rail.

2. The multifunctional dental extraoral suction machine according to claim 1, characterized in that: A third guardrail structure is also arranged on the edge of the support plate, wherein the third guardrail structure is arranged between the first guardrail structure and the second guardrail structure.

3. The multifunctional dental extraoral suction machine according to claim 2, characterized in that: The area of ​​the cross section of the support plate in the horizontal direction is larger than the area of ​​the cross section of the suction machine body in the horizontal direction.

4. The multifunctional dental extraoral suction machine according to claim 1, characterized in that: The water tank box is provided with a drainage frame below the first through hole, wherein a drainage opening is provided on a side of the drainage frame away from the filter layer, and the drainage frame is further provided with a drainage plate below the drainage opening.

5. The multifunctional dental extraoral suction machine according to claim 1, characterized in that: A switch valve is arranged in the first hose and / or the second hose, and a first socket electrically connected to the suction machine body, the exhaust fan and the compressor is arranged on the side wall of the suction machine body.

6. The multifunctional dental extraoral suction machine according to claim 5, characterized in that: The side wall of the suction machine body is provided with a second socket spaced apart from the first socket, wherein the first socket is provided with a first live wire hole and a first neutral wire hole, and the second socket is provided with a second live wire hole connected in parallel with the first live wire hole and a second neutral wire hole connected in parallel with the first neutral wire hole.

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