False tooth polishing device

Abstract

The invention relates to the field of false tooth processing, in particular to a false tooth grinding device which comprises an operation table arranged on a main body of the false tooth grinding device; the dustproof cover is detachably connected with the operation table; the dustproof cover is provided with a dustproof cavity and an observation area which is inclined to the surface of the operation table; the dustproof assembly comprises a first air duct and a second air duct which are arranged at a first angle; the dustproof assembly is arranged in the dustproof cavity; the air blower is arranged on the main body, and an air blowing opening of the air blower is communicated with the first air duct and the second air duct; during use, a first air curtain blown out of the first air duct and a second air curtain blown out of the second air duct intersect to form a dustproof area covering the observation area. The first air curtain and the second air curtain which are arranged at the first angle form a dustproof area covering the observation area of the dustproof cover, so that the risk that dust flies to the observation area is reduced, the cleanliness of the observation area is guaranteed, and a doctor can conveniently observe the polishing condition of false teeth.

Description

Technical Field

[0001] The present invention relates to the technical field of denture processing, in particular to a denture grinding device. Background Art

[0002] As people's living standards continue to improve, their attention to oral health and aesthetics is increasing, and the demand for dental diagnosis and treatment is also growing. This is especially true in the areas of denture restoration and orthodontics, where related business volume is showing a significant upward trend. During dental clinical procedures, doctors often need to grind and polish dentures or tooth surfaces to meet the needs of restoration and treatment. However, these operations usually generate large amounts of dust and microbial aerosols. Without effective dust prevention and removal measures, dust will permeate the diagnosis and treatment environment, seriously affecting air quality.

[0003] Most dental clinics are not equipped with comprehensive dust prevention and removal systems during the polishing process, which results in dust spreading within the clinic, polluting the air and adhering to the surface of equipment. This not only affects the normal operation and service life of the equipment, but also increases the difficulty and cost of daily cleaning and maintenance. More importantly, these suspended particles may carry the patient's blood or saliva, forming bioaerosols containing pathogenic microorganisms, posing a risk of cross-infection and a potential threat to the health of patients and medical staff. For example, if unsterilized bioaerosols remain on the surface of dentures after polishing, they may spread infectious diseases such as hepatitis B virus (HBV) and herpes virus, posing a hidden danger to medical safety.

[0004] To address these issues, some denture polishing devices with dust collection capabilities have emerged on the market. However, these devices lack sufficient suction power to quickly and efficiently capture the high concentrations of dust generated during polishing, leaving some dust particles in the air. This airborne dust can adhere to the device's housing, obstructing the surgeon's field of view during polishing. Furthermore, some dust can enter the clinic through openings in the housing. Summary of the Invention

[0005] In order to solve or at least partially solve the above technical problems, the present invention provides a denture grinding device.

[0006] The present invention provides a denture polishing device, which includes a main body, an operating table, a dust cover, a dust proof component, and a hair dryer. The operating table is arranged on the main body of the denture polishing device; the dust cover is detachably connected to the operating table; the dust cover has a dust proof cavity and an observation area arranged inclined to the operating table surface; the dust proof component includes a first air duct and a second air duct arranged at a first angle; the dust proof component is arranged in the dust proof cavity; the hair dryer is arranged on the main body, and its blowing port is connected to the first air duct and the second air duct; when in use, the first air curtain blown out by the first air duct and the second air curtain blown out by the second air duct intersect to form a dust proof area covering the observation area.

[0007] Optionally, the dustproof component also includes a plurality of air outlet parts connected to the first air duct and a plurality of air outlet parts connected to the second air duct; the cross-sectional area of ​​the air outlet of the air outlet part gradually increases from the direction close to the first air duct or the second air duct to the direction away from the first air duct or the second air duct.

[0008] Optionally, the dust cover also includes a first air guide plate and a second air guide plate, the first air guide plate is arranged on the wall of the dust chamber and is located on one side of the first air duct; the air outlet piece connected to the first air duct is located on one side of the first air guide plate, and the air outlet of the air outlet piece is located in the middle of the first air guide plate; the second air guide plate is arranged on the wall of the dust chamber and is located on one side of the second air duct; the air outlet piece connected to the second air duct is located on one side of the second air guide plate, and the air outlet of the air outlet piece is located in the middle of the second air guide plate.

[0009] Optionally, a plurality of drainage holes are provided at the connection between the first air guide plate and the second air guide plate and the wall of the dustproof chamber.

[0010] Optionally, the denture polishing device also includes a dust suction component, which includes an exhaust fan, a bellows, and a suction disc, wherein the exhaust fan is arranged on the main body; the suction disc is arranged on the workbench table and is connected to the exhaust port of the exhaust fan through the bellows; the cross-sectional area of ​​the suction port of the suction disc gradually increases from the direction close to the bellows to the direction away from the bellows.

[0011] Optionally, the denture polishing device also includes a dust filter assembly arranged between the bellows and the exhaust fan, the dust filter assembly including a dust filter canister, a cover, and a filter element, the dust filter canister having a dust filter chamber connected to the exhaust port of the exhaust fan; the cover is detachably arranged at the mouth of the dust filter chamber, and the cover cavity of the cover is connected to the end of the bellows away from the suction disc; the filter element is arranged between the dust filter canister and the cover, and the filter mesh of the filter element is located in the dust filter chamber.

[0012] Optionally, a drainage trough is provided on the workbench surface, and a drainage outlet is provided at the bottom of the drainage trough; the denture polishing device also includes a flushing assembly, which includes a water tank, a flushing nozzle, and a water pump, and the water tank is arranged on the main body; the flushing nozzle is arranged on the workbench surface; the water pump is arranged at the bottom of the workbench; the water inlet of the water pump is connected to the water storage chamber of the water tank through a water inlet pipe, and the water outlet of the water pump is connected to the flushing nozzle through a water outlet pipe.

[0013] Optionally, the denture polishing device further comprises a sewage tank, which is arranged on the main body; the sewage cavity of the sewage tank is connected to the drain outlet via a bellows.

[0014] Optionally, the height of the operating table surface close to the drainage groove is smaller than the height of the surface away from the drainage groove; the wall of the dustproof chamber is also provided with a drainage chamfer, which is used to guide water into the drainage groove.

[0015] Optionally, the dust cover has two operating holes arranged opposite to each other; the denture polishing device also includes a sleeve, the diameter of one end of the sleeve is larger than the diameter of the other end, and the end of the sleeve with the larger diameter is detachably connected to the operating hole.

[0016] Optionally, a clamping protrusion is provided on the operating table surface; the denture grinding device also includes a drill bit disk, the drill bit disk has a plurality of plug holes for inserting drill bits and a clamping groove adapted to the clamping protrusion, and the clamping groove is clamped with the clamping protrusion.

[0017] Optionally, the denture polishing device further comprises a clamping piece having a clamping slot for clamping an electric drill; the clamping piece is detachably arranged on the wall of the dustproof chamber.

[0018] Optionally, the denture polishing device further comprises a lighting lamp, which is arranged on the top of the dust cover.

[0019] Optionally, the denture polishing device further comprises a base having a storage cavity; the base is arranged at the bottom of the main body.

[0020] Optionally, the denture polishing device further comprises a universal wheel, which is arranged at the bottom of the base.

[0021] Compared with the prior art, in this embodiment, before the doctor polishes the denture, the hair dryer is first operated, and the first air duct blows out the first air curtain and the second air duct blows out the second air curtain, and the first air curtain and the second air curtain set at a first angle are used to form a dust-proof area covering the observation area of ​​the dust cover. Afterwards, the dust generated when the denture is polished will be blown away by the high-speed flowing first air curtain and the second air curtain, reducing the risk of dust drifting to the observation area, ensuring the cleanliness of the observation area, and making it convenient for the doctor to observe the polishing of the denture. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application, the related drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in the present application according to the drawings.

[0023] Figure 1 is a whole schematic diagram of an embodiment of the denture polishing device of the present application;

[0024] Figure 2 is an exploded schematic diagram of the main body of an embodiment of the denture polishing device of the present application;

[0025] Figure 3 is an assembly exploded schematic diagram of the operation table and dust cover of an embodiment of the denture polishing device of the present application;

[0026] Figure 4 is a cross-sectional exploded schematic diagram of the operation table and dust cover of an embodiment of the denture polishing device of the present application;

[0027] Figure 5 is an enlarged view of A of Figure 4 ;

[0028] Figure 6 is an enlarged view of B of Figure 4 ;

[0029] Figure 7 is an assembly schematic diagram of the dust suction assembly and dust filtering assembly of an embodiment of the denture polishing device of the present application;

[0030] Figure 8 is a cross-sectional schematic diagram of the dust filtering assembly of an embodiment of the denture polishing device of the present application;

[0031] Figure 9 is an assembly schematic diagram of the first air pipe and air outlet, the second air pipe and air outlet of an embodiment of the denture polishing device of the present application;

[0032] Figure 10 is a cross-sectional schematic diagram of the air outlet of an embodiment of the denture polishing device of the present application;

[0033] Figure 11 is a cross-sectional schematic diagram of the flushing assembly of an embodiment of the denture polishing device of the present application;

[0034] Figure 12 is a schematic diagram of the drill bit disc of an embodiment of the denture polishing device of the present application;

[0035] Figure 13It is an exploded schematic diagram of an embodiment of a clamping member and a dust cover of a denture grinding device of the present invention;

[0036] Figure 14 yes Figure 3 Enlarged view of part C.

[0037] Description of reference numerals:

[0038] 1. Main body; 11. First mounting member; 111. Mounting slot; 112. Mounting hole; 12. Connecting column; 13. Connecting hole; 14. Second mounting member; 15. Limiting member; 151. Limiting slot; 16. Base; 161. Storage cavity; 17. Universal wheel; 2. Operating table; 20. Connecting slot; 21. Snap-fit ​​groove; 22. First assembly slot; 23. First assembly hole; 24. Second assembly slot; 241. Second assembly hole; 25. Drainage slot; 251. Drainage outlet; 26. Snap-fit ​​protrusion ; 27. Threading hole; 3. Dust cover; 30. Dust chamber; 31. Snap-on column; 32. Observation area; 33. Operation hole; 34. Snap-on ring; 341. Snap-on ridge; 35. First air guide plate; 36. Second air guide plate; 37. Snap ring; 38. Drain hole; 39. Drainage chamfer; 4. Dustproof assembly; 41. Blowing pipe; 42. First air duct; 421. First air duct; 43. Second air duct; 431. Second air duct; 44. Blowing branch pipe; 45. Air outlet; 46. Dustproof area; 47 , air outlet; 471, air outlet; 51, hair dryer; 511, air outlet; 52, sleeve; 53, drill plate; 531, plug hole; 54, clamping block; 541, clamping slot; 55, clamping piece; 551, clamping slot; 552, dovetail slot; 56, slide rail; 57, lighting; 58, storage cover; 581, pull ring; 6, dust collection component; 61, exhaust fan; 611, exhaust port; 62, bellows; 63, suction plate; 631, suction port; 632, suction connector; 7, filter Dust assembly; 70, dust filter canister; 701, dust filter chamber; 702, extension tube; 703, connecting pipe; 71, lid; 711, first through hole; 72, filter element; 721, filter ring; 722, filter screen; 8, flushing assembly; 81, water storage tank; 811, water storage chamber; 82, flushing nozzle; 83, water pump; 84, water inlet pipe; 85, water outlet pipe; 86, sealing cover; 87, sewage tank; 871, sewage chamber; 88, anti-fouling cover; 91, opening; 92, dust cover; 93, handle. DETAILED DESCRIPTION

[0039] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0040] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0043] Unless otherwise specified, the term "plurality" means two or more and "plurality" means two or more.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0045] The applicant discovered that existing denture polishing equipment has relatively weak suction. In environments with high dust concentrations generated during polishing, it is unable to quickly and efficiently extract and collect the dust. This causes some of the airborne dust to adhere to the dust cover, obstructing the doctor's field of vision and hindering the denture polishing process. Furthermore, some of the airborne dust enters the clinic through the pores of the cover, causing environmental pollution.

[0046] In view of this, the inventors of the present invention provide a denture grinding device to solve the above problems.

[0047] First embodiment

[0048] The denture grinding device mentioned in this embodiment is as follows: Figures 1 to 6 As shown, the denture polishing device includes a main body 1, an operating table 2, a dust cover 3, a dustproof component 4, and a hair dryer 51. The operating table 2 is arranged on the top of the main body 1, the dust cover 3 is detachably arranged on the top of the operating table 2, the dustproof component 4 is arranged on the dust cover 3, and the blowing port 511 of the hair dryer 51 is connected to the dustproof component 4. Specifically, as shown in FIG. Figure 2 As shown, the main body 1 includes a first mounting member 11 and a plurality of connecting columns 12. The top of the first mounting member 11 has a mounting groove 111, and the bottom of the mounting groove 111 has a plurality of mounting holes 112. The first mounting member 11 is rectangular in shape, and each of the four corners of the first mounting member 11 has a connecting hole 13. The bottom ends of the plurality of connecting columns 12 are respectively located in the connecting holes 13 at the four corners of the first mounting member 11, and the bottom ends of the connecting columns 12 are fixedly connected to the first mounting member 11. The bottom of the operating table 2 has a plurality of connecting grooves 20, and the plurality of connecting grooves 20 are respectively located at the four corners of the operating table 2. The top ends of the plurality of connecting columns 12 are respectively located in the connecting grooves 20 at the four corners of the operating table 2, and the connecting columns 12 are fixedly connected to the operating table 2. This completes the installation of the main body 1.

[0049] Optional, such as Figure 2 As shown, based on the above solution, the structure of the main body 1 is further improved. The main body 1 also includes a second mounting member 14. The second mounting member 14 is a rectangular plate-shaped structure with connecting holes 13 at each of the four corners. The second mounting member 14 is disposed between the first mounting member 11 and the operating table 2. The bottom ends of multiple connecting columns 12 are respectively disposed in the connecting holes 13 located at the four corners of the first mounting member 11. The top ends of the multiple connecting columns 12 pass through the connecting holes 13 at the four corners of the second mounting member 14 and are connected to the multiple connecting grooves 20 located at the four corners of the operating table 2. This completes the installation of the main body 1.

[0050] Optionally, the dust cover 3 is made of transparent polymethyl methacrylate (PMMA) material.

[0051] like Figure 1 、 Figure 3 As shown, the dust cover 3 has a dustproof cavity 30, the opening of the dustproof cavity 30 is located at the bottom of the dust cover 3, and the edge of the opening of the dustproof cavity 30 is provided with a clamping column 31. Correspondingly, the surface of the operating table 2 is provided with a clamping groove 21 adapted to the clamping column 31. By arranging the clamping column 31 in the clamping groove 21, the dust cover 3 and the operating table 2 are detachably connected. There is a transparent area on the dust cover 3, which is the observation area 32. The observation area 32 is tilted to the bottom of the dust cover 3. When the dust cover 3 is set on the operating table 2, the observation area 32 is also tilted to the surface of the operating table 2. The tilted observation area 32 is convenient for the doctor to observe the polishing of the denture at close range.

[0052] like Figure 1 、 Figures 3 to 6 As shown, the hair dryer 51 is arranged on the main body 1. Optionally, the hair dryer 51 is arranged on the second mounting member 14, or the hair dryer 51 is arranged in the mounting groove 111 of the first mounting member 11. For example, the mounting hole of the hair dryer 51 and the mounting hole 112 of the first mounting member 11 are penetrated by bolts, and the hair dryer 51 is fixed in the mounting groove 111 of the first mounting member 11. The dustproof component 4 includes a blowing pipe 41, a first air duct 42 and a second air duct 43. One end of the blowing pipe 41 is plugged into the blowing port 511 of the hair dryer 51, and one end of the first air duct 42 and one end of the second air duct 43 are respectively connected to the other end of the blowing pipe 41 through a blowing branch pipe 44. The other end of the first air duct 42 and the other end of the second air duct 43 are both arranged in the dustproof cavity 30 of the dust cover 3. The interior of the first air duct 42 is a first air channel 421. The wall of the first air duct 42 has multiple air outlet holes 45. Air in the first air channel 421 passes through the multiple air outlet holes 45 of the first air duct 42 to form a first air curtain. The interior of the second air duct 43 is a second air channel 431. The wall of the second air duct 43 has multiple air outlet holes 45. Air in the second air channel 431 passes through the multiple air outlet holes 45 of the second air duct 43 to form a second air curtain. The first air duct 42 is located at the bottom of the dustproof cavity 30, and the second air duct 43 is located at the opening of the dustproof cavity 30. The angle between the first and second air curtains is a first angle α. The intersection of the first and second air curtains is point O of the first angle α. This arrangement can be considered as the first air duct 42 and the second air duct 43 being arranged at the first angle α.

[0053] An exemplary use process of the denture grinding device disclosed in this embodiment:

[0054] like Figures 1 to 6As shown, before polishing the denture, the doctor first turns on the switch of the hair dryer 51, putting the hair dryer 51 into operation. Air enters from the air exchange port of the hair dryer 51, flows through the blowing port 511 of the hair dryer 51, and then flows through the blowing pipe 41, the blowing branch pipe 44, and enters the first air duct 421 of the first air duct 42 and the second air duct 431 of the second air duct 43. The air in the first air duct 421 passes through the air outlet 45 of the first air duct 42 to form a first air curtain, and the air in the second air duct 431 passes through the air outlet 45 of the second air duct 43 to form a second air curtain. After the first air curtain and the second air curtain meet, a dust-free area is formed. This dust-free area can be regarded as a dustproof area 46. The dustproof area 46 covers the observation area 32 of the dust cover 3. This arrangement can prevent dust generated during the polishing of the denture from contaminating the observation area 32 of the dust cover 3.

[0055] Optionally, the first angle α is an obtuse angle, and the value range of the first angle α is 120° to 160°. This configuration makes it easier for the dustproof area 46 to cover the observation area 32.

[0056] Compared with the prior art, in this embodiment, before the doctor polishes the denture, he first operates the hair dryer 51, and makes the first air duct 421 blow out the first air curtain, and the second air duct 431 blow out the second air curtain, and utilizes the first air curtain and the second air curtain set at a first angle to form a dustproof area 46 covering the observation area 32 of the dust cover 3. Afterwards, the dust generated when the denture is polished will be blown away by the high-speed flowing first air curtain and the second air curtain, thereby reducing the risk of dust drifting to the observation area 32, ensuring the cleanliness of the observation area 32, and facilitating the doctor to observe the polishing condition of the denture.

[0057] The denture grinding device of this embodiment is small in size and occupies a small area. It can be set on the side of the dentist's chair. The denture can be ground without the doctor moving, which is very convenient.

[0058] Second embodiment

[0059] The inventors have found that the large amount of dust generated when polishing dentures reduces the pollution to the observation area 32 due to the protection of the dust-proof area 46 on the observation area 32, but this may increase the risk of dust scattered in the air entering the clinic.

[0060] In view of this, this embodiment also proposes a denture grinding device. The second embodiment is a further improvement based on the first embodiment. The main improvement is that the denture grinding device further includes a sleeve 52 provided on the dust cover 3 and a clamping ring 34 for fixing the sleeve 52. The specific solution is as follows:

[0061] like Figure 3As shown, the dust cover 3 has two operating holes 33, located on opposite side walls of the dust cover 3. Optionally, the operating holes 33 may be circular holes. The snap ring 34 is annular, with a snap rib 341 on one side. The snap rib 341 surrounds the ring hole of the snap ring 34, and the outer diameter of the snap rib 341 is smaller than the diameter of the operating holes 33. The sleeve 52 may be made of nitrile rubber, which provides elasticity. The diameter of one end of the sleeve 52 is larger than the diameter of the other end.

[0062] During installation, the end of the sleeve 52 with a smaller diameter is first passed through the operating hole 33 and inserted into the dustproof chamber 30. Then, the end of the sleeve 52 with a larger diameter is placed along the edge of the operating hole 33. The snap-fitting ridge 341 of the snap-fitting ring 34 is then placed in the operating hole 33. The snap-fitting ridge 341 cooperates with the operating hole 33 to clamp and secure the end of the sleeve 52 with a larger diameter. This arrangement not only achieves a detachable connection between the sleeve 52 and the operating hole 33, but also facilitates the replacement of the sleeve 52. During use, the doctor's hand is passed through the sleeve 52 into the dustproof chamber 30. Due to the elastic properties of the nitrile rubber material, the end of the sleeve 52 with a smaller diameter restrains the doctor's wrist or arm, thereby sealing the dustproof chamber 30 and preventing the risk of dust escaping in the air from entering the clinic.

[0063] Third embodiment

[0064] The inventors have found that the dust generated during the polishing of dentures reduces the pollution to the observation area 32 due to the protection of the dustproof area 46 on the observation area 32 , but may cause a large amount of dust to adhere to the doctor's hands.

[0065] In view of this, this embodiment also proposes a denture grinding device. The third embodiment is a further improvement based on the first or second embodiment. The main improvement is that the denture grinding device further includes a dust collection component 6. The specific solution is as follows:

[0066] like Figure 1 、 Figure 3 、 Figure 7As shown, the dust collection assembly 6 includes an exhaust fan 61, a bellows 62, and a suction disc 63. The suction disc 63 is arranged on the table top of the operating table 2. The exhaust fan 61 is arranged on the main body 1, and the suction disc 63 is connected to the exhaust fan 61 through the bellows 62. Optionally, the exhaust fan 61 is arranged on the second mounting member 14, or the exhaust fan 61 is arranged in the mounting groove 111 of the first mounting member 11. For example, the mounting hole of the exhaust fan 61 and the mounting hole 112 of the first mounting member 11 are penetrated by bolts, and the exhaust fan 61 is fixed in the mounting groove 111 of the first mounting member 11. Specifically, the table top of the operating table 2 has a first assembly groove 22, which is located in the middle of the table top of the operating table 2, and the bottom of the first assembly groove 22 has a first assembly hole 23. The outer diameter of the suction disc 63 is less than or equal to the groove diameter of the first assembly groove 22, which facilitates the suction disc 63 to be arranged in the first assembly groove 22. The suction disc 63 has a suction port 631. The diameter of one end of the suction port 631 is larger than the diameter of the other end. Specifically, the suction port 631 is further described by taking the connection between the bellows 62 and the suction disc 63 as an example. The cross-sectional area of ​​the suction port 631 of the suction disc 63 gradually increases from the direction close to the bellows to the direction away from the bellows. Such a suction port 631 is more conducive to the suction of dust. The bottom of the suction disc 63 has a suction connector 632. During installation, the suction disc 63 is set in the first assembly groove 22, and the suction connector 632 is passed through the first assembly hole 23 to the bottom of the operating table 2. One end of the bellows 62 is plugged into the suction connector 632, thus completing the connection between the bellows 62 and the suction disc 63; the other end of the bellows 62 is connected to the exhaust port 611 of the exhaust fan 61. When in use, the doctor turns on the switch of the exhaust fan 61, so that the exhaust fan 61 is in working state, so that the suction port 631 of the suction disc 63 located in the dustproof chamber 30 generates suction. When a large amount of dust is generated by polishing the denture, due to the dust suction effect of the dust suction component 6, the air containing dust passes through the suction port 631, the bellows 62, the suction port 631 of the exhaust fan 61 in sequence, and finally passes through the exhaust port of the exhaust fan 61 and is discharged through the pipe. In this technical solution, the dust suction component 6 is used to adsorb the dust-containing air, so that the amount of dust attached to the doctor's hands is reduced. Preferably, the first assembly groove 22 is located directly below the axis of the operating hole 33. This arrangement facilitates the positioning of the suction disc 63 and also facilitates the suction disc 63 to suck the dust generated by polishing the denture.

[0067] Optionally, based on the above technical solution, the rotation speed of the hair dryer 51 is greater than the rotation speed of the exhaust fan 61. Such a setting can utilize the wind speed difference between the first wind curtain, the second wind curtain and the dust suction component 6 to further increase the adsorption force of the dust-laden air, thereby further reducing the amount of dust attached to the doctor's hands.

[0068] Optional, such as Figure 1 、 Figure 2 、 Figure 7 、 Figure 8As shown, on the basis of the above technical solution, the dust suction function of the denture grinding device is further optimized, and the denture grinding device also includes a dust filter assembly 7, which is arranged between the bellows 62 and the exhaust fan 61. The middle part of the second mounting member 14 has a first assembly hole 23. The dust filter assembly 7 includes a dust filter canister 70, a cover 71, and a filter 72. The dust filter canister 70 has a dust filter cavity 701 inside, and the cavity of the dust filter cavity 701 is located at the top of the dust filter canister 70. The bottom of the dust filter canister 70 has an extension tube 702, and the extension tube 702 is connected to the dust filter cavity 701. The dust filter canister 70 is arranged on the second mounting member 14, and the extension tube 702 passes through the first assembly hole 23 of the second mounting member 14 to the bottom surface of the second mounting member 14. The extension tube 702 is connected to the exhaust port 611 of the exhaust fan 61 via the connecting tube 703, thus establishing communication between the exhaust port 611 of the exhaust fan 61 and the dust filter chamber 701 of the dust filter canister 70. Specifically, a flange is provided at the exhaust port 611, and one end of the connecting tube 703 is also provided with a flange. Bolts penetrate holes in the two flanges to connect the exhaust fan 61 and the connecting tube 703. The end of the extension tube 702 away from the dust filter canister 70 is also provided with a flange, and the other end of the connecting tube 703 is also provided with a flange. Bolts penetrate holes in the two flanges to connect the connecting tube 703 and the extension tube 702. The filter element 72 includes a filter ring 721 and a filter screen 722. The filter screen 722 is bag-shaped, and the mesh size of the filter screen 722 is smaller than the particle size of the dust particles. The filter screen 722 is arranged in a circle around the annular hole of the filter ring 721. The outer diameter of the filter ring 721 is larger than the diameter of the opening of the dust filter chamber 701. The filter ring 721 prevents the filter element 72 from entering the dust filter chamber 701 in its entirety, making it easier to replace the filter element 72. The opening of the dust filter chamber 701 is provided with an external thread, and the cover 71 is provided with an internal thread that matches the external thread. The cover 71 also has a first through hole 711, which facilitates the passage of the end of the bellows 62 away from the suction disc 63. During installation, the end of the bellows 62 away from the suction plate 63 is passed through the first through-hole 711 to the side of the cover 71 near the dust filter canister 70. The filter screen 722 is placed in the dust filter chamber 701 of the dust filter canister 70, with the filter ring 721 contacting the opening of the dust filter chamber 701. The cover 71 is then threadedly connected to the opening of the dust filter chamber 701. At this point, the filter element 72 is positioned between the dust filter canister 70 and the cover 71.During use, the doctor turns on the switch of the exhaust fan 61, so that the exhaust fan 61 is in working state, so that the suction port 631 of the suction disc 63 located in the dustproof chamber 30 generates suction. When a large amount of dust is generated by grinding the denture, due to the dust suction effect of the dust suction component 6, the dust-laden air passes through the suction port 631 and the bellows 62 in turn into the dust filter chamber 701 of the dust filter tank 70, and is filtered by the filter screen 722 of the filter element 72. The filter screen 722 filters the dust and the dust remains in the filter screen 722. The dust-free air filtered by the filter screen 722 passes through the extension tube 702, the connecting tube 703, the suction port 631 of the exhaust fan 61 in turn, and is finally discharged through the exhaust port of the exhaust fan 61. In this technical solution, the dust-laden air is filtered by the dust filter assembly 7 so that the dust remains in the filter 722, and the dust-free air is directly discharged from the exhaust port of the exhaust fan 61 without polluting the environment in the clinic. There is no need to connect the exhaust port of the exhaust fan 61 to a fixed pipe and discharge the dust-laden air, which increases the flexibility of the denture polishing device.

[0069] You can choose any one of the three optional technical solutions mentioned above.

[0070] Fourth embodiment

[0071] This embodiment also proposes a denture grinding device. The fourth embodiment is a further improvement based on any one of the first to third embodiments. The main improvements are:

[0072] Optional, such as Figure 4 、 Figure 5 、 Figure 6 、 Figure 9 、 Figure 10As shown, the dustproof assembly 4 also includes multiple air outlet members 47, which are divided into two parts. One part of the air outlet members 47 is disposed on the first air duct 42, and the multiple air outlet members 47 are all connected to the first air duct 421. The multiple air outlet members 47 are spaced apart along the length of the first air duct 42. The other part of the air outlet members 47 is disposed on the second air duct 43, and the multiple air outlet members 47 are all connected to the second air duct 431. The multiple air outlet members 47 are spaced apart along the length of the second air duct 43. Specifically, the air outlet members 47 have air outlets 471 therein. The structure of the air outlet hole 45 of the first air duct 42 is the same as that of the air outlet hole 45 of the second air duct 43. The shape of one end of the air outlet member 47 matches the shape of the air outlet hole 45 of the first air duct 42, and one end of the air outlet member 47 is disposed within the air outlet hole 45 of the first air duct 42, thereby achieving a fixed connection between the air outlet member 47 and the first air duct 42. When the air outlet member 47 is connected to the first air duct 42, the first air channel 421 of the first air duct 42 is in communication with the air outlet 471 of the air outlet member 47. Similarly, one end of the air outlet member 47 is disposed in the air outlet hole 45 of the second air duct 43, thereby achieving a fixed connection between the air outlet member 47 and the second air duct 43. When the air outlet member 47 is connected to the second air duct 43, the second air channel 431 of the second air duct 43 is in communication with the air outlet 471 of the air outlet member 47. Optionally, the air outlet member 47 and the first air duct 42 can be connected by threaded connection or by gluing. In this technical solution, there is no limitation on the connection method between the air outlet member 47 and the first air duct 42, or between the air outlet member 47 and the second air duct 43. Because the air outlet member 47 provided on the first air duct 42 and the air outlet member 47 provided on the second air duct 43 have the same structure, the air outlet member 47 provided on the first air duct 42 will be used as an example for description. The cross-sectional area of ​​the air outlet 471 of the air outlet member 47 gradually increases from the direction closer to the first air duct 42 toward the direction farther away from the first air duct 42. In other words, the cross-sectional area of ​​the air outlet 471 of the air outlet member 47 gradually increases from the direction closer to the first air duct 421 toward the direction farther away from the first air duct 421. The height h of the air outlet 471 is 0.5 mm to 3 mm. This structure of the air outlet member 47 facilitates the formation of the first and second air curtains when connected to the first and second air ducts 42, 43, and also helps increase the wind speed of the first and second air curtains.

[0073] Optional, such as Figures 4 to 6As shown, the structure of the dust cover 3 has been further improved. The dust cover 3 also includes a first air guide plate 35 and a second air guide plate 36. Both the first air guide plate 35 and the second air guide plate 36 are disposed on the wall of the dust chamber 30. The first air guide plate 35 is disposed at the top of the dust chamber 30 and is located on one side of the observation area 32 of the dust cover 3. The side of the first air guide plate 35 away from the observation area 32 has multiple snap rings 37. The snap rings 37 have a C-shaped cross-section and are located near the connection between the first air guide plate 35 and the wall of the dust chamber 30. The multiple snap rings 37 are spaced sequentially along the length of the first air guide plate 35 and are used to securely engage the first air duct 42. When the first air duct 42 is assembled on the first air guide plate 35, the air outlets 471 of the multiple air outlet parts 47 of the first air duct 42 are located in the middle of the first air guide plate 35. The first air curtain is blocked by the first air guide plate 35, and the angle at which the first air curtain blows out is further reduced. This arrangement facilitates the first air guide plate 35 to guide the first air curtain and increases the wind speed of the first air curtain, avoiding the low wind speed caused by the first air curtain blowing out at too large an angle. The second air guide plate 36 is arranged at the mouth of the dustproof cavity 30 and is located below the observation area 32 of the dust cover 3. The second air guide plate 36 has multiple snap rings 37 on the side away from the observation area 32. The cross-sectional shape of the snap rings 37 is C-shaped, and the snap rings 37 are arranged near the connection between the second air guide plate 36 and the wall of the dustproof cavity 30. Multiple snap rings 37 are arranged in sequence along the length direction of the second air guide plate 36, and the snap rings 37 are used to snap and fix the second air duct 43. When the second air duct 43 is assembled on the second air guide plate 36, the air outlets 471 of the multiple air outlet members 47 of the second air duct 43 are located in the middle of the second air guide plate 36. The second air curtain is blocked by the second air guide plate 36, and the angle at which the second air curtain is blown out is further reduced. This arrangement facilitates the second air guide plate 36 to guide the second air curtain, and increases the wind curtain of the second air curtain, thereby avoiding the second air curtain blowing out at an excessively large angle, which leads to a decrease in wind speed.

[0074] Optional, such as Figure 5 、 Figure 6 As shown, based on the above solution, the first air guide plate 35 and the second air guide plate 36 are further improved. The connection between the first air guide plate 35 and the wall of the dustproof chamber 30 is provided with multiple drainage holes 38, which are sequentially spaced along the length of the first air guide plate 35. The connection between the second air guide plate 36 and the wall of the dustproof chamber 30 is provided with multiple drainage holes 38, which are sequentially spaced along the length of the second air guide plate 36. The provision of drainage holes 38 on the first air guide plate 35 and the second air guide plate 36 facilitates the flow and discharge of water when cleaning dust from the dustproof chamber 30.

[0075] Any one of the three optional technical solutions mentioned above may be selected, and they may also be combined with each other.

[0076] Fifth embodiment

[0077] The inventors have discovered that dust generated after polishing the denture will remain in the dustproof cavity 30 , which may cause environmental pollution in the dustproof cavity 30 .

[0078] In view of this, this embodiment also proposes a denture grinding device. The fifth embodiment is a further improvement based on any one of the first to fourth embodiments. The main improvement is that the denture grinding device further includes a flushing assembly 8. The specific solution is as follows:

[0079] Optional, such as Figure 1 、 Figure 4 、 Figure 11As shown, the flushing assembly 8 includes a water tank 81, a flushing nozzle 82, and a water pump 83. The water tank 81 has a water storage chamber 811 therein for storing sterile distilled water or physiological saline. Optionally, the water tank 81 is placed on the second mounting member 14, or the water tank 81 is placed in the mounting groove 111 of the first mounting member 11. The operating table 2 also has a second assembly groove 24 on the surface. The second assembly groove 24 is located on one side of the first assembly groove 22, i.e., the side away from the doctor. The bottom of the second assembly groove 24 has a second assembly hole 241. The flushing nozzle 82 is disposed in the second assembly groove 24. Optionally, the water inlet pipe 84 and the water outlet pipe 85 are both medical silicone hoses. The water pump 83 is disposed at the bottom of the operating table 2, for example, by screwing through a hole for the water pump 83 to secure it to the bottom of the operating table 2. The operating table 2 has a drainage trough 25 on its surface, with a drain port 251 at its bottom. The drainage trough 25 is located on the other side of the first assembly slot 22, i.e., the side closest to the doctor. During installation, first install the water pump 83 on the bottom of the operating table 2, place the water tank 81 on the second mounting member 14, insert one end of the water inlet pipe 84 into the water inlet of the water pump 83, and place the other end of the water inlet pipe 84 within the water storage chamber 811 of the water tank 81. Insert one end of the water outlet pipe 85 into the water outlet of the water pump 83, and insert the other end of the water outlet pipe 85 through the second assembly hole 241 and the second assembly slot 24 onto the operating table 2 surface, where it is connected to the interface of the flushing nozzle 82. Finally, place the flushing nozzle 82 within the second assembly slot 24. During use, simply turn on the water pump 83. The water pump 83 draws water from the water tank 81 through the water inlet pipe 84 and delivers it to the flushing nozzle 82 through the water outlet pipe 85. The water is then ejected from the flushing nozzle 82, thereby cleaning the dustproof chamber 30. The dust-laden water is discharged through the drain outlet 251 of the drain trough 25. Optionally, the flushing assembly 8 also includes a sealing cover 86 having a hole therein. The opening of the water storage chamber 811 of the water storage tank 81 has external threads, and the sealing cover 86 has internal threads that match the external threads. The sealing cover 86 and the water storage tank 81 are detachably connected through a threaded connection. During installation, the other end of the water inlet pipe 84 passes through the hole in the sealing cover 86 and enters the water storage chamber 811 of the water storage tank 81. By placing the sealing cover 86 at the opening of the water storage chamber 811 to seal the water storage chamber 811, the water in the water storage chamber 811 is kept clean and free from contamination. Likewise, when the water storage tank 81 tilts or falls, the water in the water storage tank 81 is prevented from spilling.

[0080] Optional, such as Figure 11As shown, the denture polishing device also includes a sewage tank 87, which has a sewage cavity 871 inside. The sewage cavity 871 is used to collect sewage mixed with powder. Optionally, the sewage tank 87 is placed on the second mounting member 14, or the sewage tank 87 is placed in the mounting groove 111 of the first mounting member 11. The drain port 251 is connected to the sewage cavity 871 of the sewage tank 87 through the bellows 62. Optionally, the sewage tank 87 also includes an anti-fouling cover 88, which has a hole. The sewage cavity 871 of the sewage tank 87 has an external thread, and the anti-fouling cover 88 has an internal thread that matches the external thread. The anti-fouling cover 88 and the sewage tank 87 are detachably connected by a threaded connection. A drainage connector is provided at the drain outlet 251. During installation, one end of the bellows 62 is inserted into the drain connector, while the other end of the bellows 62 passes through the hole in the anti-fouling cover 88 and connects to the opening of the sewage chamber 871. The connection between the two is then sealed by the anti-fouling cover 88. A sealing cover 86 is provided at the opening of the sewage chamber 871 to seal the sewage chamber 871 and prevent the sewage in the sewage chamber 871 from spilling.

[0081] Optional, such as Figure 11 As shown, a U-shaped limiter 15 is provided on the top of the second mounting member 14. The limiter 15 has a U-shaped groove 151, which is used to accommodate the water tank 81 or the sewage tank 87. Optionally, the limiter 15 and the second mounting member 14 are integrally formed. By arranging the water tank 81 or the sewage tank 87 within the groove 151, the stability of the water tank 81 or the sewage tank 87 on the second mounting member 14 is further improved.

[0082] Optional, such as Figure 4 As shown, the workbench 2 has an inclined surface. Specifically, the height of the workbench 2 surface away from the drain trough 25 is greater than the height of the workbench 2 surface closer to the drain trough 25. This arrangement facilitates the flow of wastewater mixed with powder into the drain trough 25. To further facilitate cleaning of the dust chamber 30, the dust cover 3 has been further improved. It is also provided with a drainage chamfer 39, which is located on the wall of the dust chamber 30 and at the opening of the dust chamber 30. The drainage chamfer 39 is provided on the wall of the dust chamber 30 closest to the doctor, and on the wall of the dust chamber 30 away from the doctor. The drainage chamfer 39 on the wall of the dust chamber 30 facilitates the flow of wastewater mixed with dust into the drain trough 25. Optionally, the angle of the drainage chamfer 39 is an acute angle β, with the value of the acute angle β ranging from 45° to 80°. This arrangement facilitates the flow of wastewater mixed with dust into the drain trough 25.

[0083] Any one of the three optional technical solutions mentioned above may be selected, and they may also be combined with each other.

[0084] Sixth embodiment

[0085] This embodiment also proposes a denture grinding device. The sixth embodiment is a further improvement based on any one of the first to fifth embodiments. The main improvements are:

[0086] Optional, such as Figure 4 、 Figure 12 As shown, the operating table 2 is also provided with a snap-on protrusion 26. The denture polishing device also includes a drill disk 53 having multiple insertion holes 531 for inserting drill bits. A snap-on block 54 is provided at the bottom of the drill disk 53, obliquely disposed relative to the drill disk 53. The end of the snap-on block 54, facing away from the drill disk 53, has a snap-on groove 541 that mates with the snap-on protrusion 26. By positioning the snap-on protrusion 26 within the snap-on groove 541, a detachable connection between the drill disk 53 and the operating table 2 is achieved. This allows the doctor to flexibly replace the drill bit according to the needs of the denture polishing process.

[0087] Optional, such as Figure 3 、 Figure 13 、 Figure 14 As shown, the denture polishing device also includes a clamping member 55, one end of which has a clamping groove 551, which is used to clamp and fix an electric drill, and the electric drill is used to polish the denture. The other end of the clamping member 55 has a dovetail groove 552. A slide rail 56 that is compatible with the dovetail groove 552 is also provided on the wall of the dustproof chamber 30. By setting the slide rail 56 in the dovetail groove 552, the clamping member 55 is detachably set on the wall of the dustproof chamber 30. This arrangement facilitates the fixation of the electric drill. The operating table 2 also has a wire threading hole 27, which facilitates the threading of the wires of the electric drill.

[0088] Optional, such as Figure 1 As shown, the denture polishing device further includes a lighting lamp 57, which is arranged on the top of the dust cover 3 and outside the dustproof cavity 30. Such an arrangement can prevent dust from contaminating the lighting lamp 57 and can also provide lighting for the polishing of the denture.

[0089] Optional, such as Figure 2 As shown, the denture polishing device also includes a base 16 having a storage cavity 161 for storing items. The top of the base 16 has multiple connecting slots 20, each located at the four corners of the base 16. The top ends of the multiple connecting columns 12 pass through the connecting holes 13 at the four corners of the second mounting member 14 to the multiple connecting slots 20 at the four corners of the operating table 2. The bottom ends of the multiple connecting columns 12 pass through the connecting holes 13 at the four corners of the first mounting member 11 to the multiple connecting slots 20 at the four corners of the base 16, thus completing the installation of the main body 1.

[0090] Optional, such as Figure 2 As shown, based on the above solution, the denture grinding device further includes a universal wheel 17, which is set at the bottom of the base 16 with screws. This arrangement makes it easier to move the denture grinding device.

[0091] Optional, such as Figure 3 As shown, the denture polishing device further includes a storage cover 58 having the same diameter as the first assembly slot 22 and a pull ring 581 on the top of the storage cover 58. This arrangement facilitates the storage cover 58 to cover the suction plate 63 located within the first assembly slot 22, preventing dust-laden wastewater from contaminating the suction plate 63 when flushing the dustproof chamber 30. The pull ring 581 on the top of the storage cover 58 facilitates removal of the storage cover 58 from the first assembly slot 22.

[0092] Optional, such as Figure 3 As shown, the top of the dust cover 3 has an opening 91. The dust cover 3 is also provided with a dust cap 92. A handle 93 is provided on the top of the dust cap 92. One side of the dust cap 92 is hinged to the dust cover 3. This arrangement allows the dust chamber 30 to be opened or closed via the dust cap 92, making it easy to insert or remove tools such as the drill tray 53 and an electric drill into the dust chamber 30 through the opening 91.

[0093] You can select any one of the seven optional technical solutions above, or combine several of them as needed.

[0094] Finally, it should be noted that those skilled in the art will appreciate that the embodiments of the present invention provide numerous technical details to facilitate a better understanding of the present invention. However, even without these technical details and the various variations and modifications based on the aforementioned embodiments, the technical solutions claimed in the various claims of the present invention can be substantially achieved. Therefore, in actual practice, various modifications may be made to the aforementioned embodiments in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A denture grinding device, characterized in that: include: an operating table, arranged on the main body of the denture polishing device; A dust cover is detachably connected to the operating table; the dust cover has a dustproof cavity and an observation area arranged obliquely to the operating table surface; A dustproof assembly comprising a first air duct and a second air duct arranged at a first angle; the dustproof assembly is arranged in the dustproof cavity; a hair dryer, provided on the main body, with its air outlet connected to the first air duct and the second air duct; When in use, the first air curtain blown out of the first air duct and the second air curtain blown out of the second air duct intersect to form a dust-proof area covering the observation area.

2. The denture grinding device according to claim 1, characterized in that: The dustproof assembly further includes a plurality of air outlet members in communication with the first air duct and a plurality of air outlet members in communication with the second air duct; The cross-sectional area of ​​the air outlet of the air outlet member gradually increases from the direction close to the first air duct or the second air duct toward the direction away from the first air duct or the second air duct.

3. The denture grinding device according to claim 2, characterized in that: The dust cover also includes: A first air guide plate is provided on the wall of the dustproof chamber and is located on one side of the first air duct; an air outlet member connected to the first air duct is located on one side of the first air guide plate, and an air outlet of the air outlet member is located in the middle of the first air guide plate; The second air guide plate is arranged on the wall of the dustproof chamber and is located on one side of the second air duct; the air outlet member connected to the second air duct is located on one side of the second air guide plate, and the air outlet of the air outlet member is located in the middle of the second air guide plate.

4. The denture grinding device according to claim 3, characterized in that: A plurality of drainage holes are provided at the connection points between the first air guide plate and the second air guide plate and the wall of the dustproof chamber.

5. The denture grinding device according to claim 1, characterized in that: Also included is a dust collection assembly, the dust collection assembly comprising: an exhaust fan, provided on the main body; The suction plate is arranged on the operating table and is connected to the exhaust port of the exhaust fan through a bellows; the cross-sectional area of ​​the suction port of the suction plate gradually increases from the direction close to the bellows to the direction away from the bellows.

6. The denture grinding device according to claim 5, characterized in that: It also includes a dust filter assembly disposed between the bellows and the exhaust fan, the dust filter assembly comprising: A dust filter tank having a dust filter cavity connected to an air outlet of the exhaust fan; A cover is detachably mounted on the opening of the dust filter chamber, wherein the cover cavity is connected to an end of the bellows away from the suction disc; The filter element is arranged between the dust filter tank and the cover, and the filter screen of the filter element is located in the dust filter cavity.

7. The denture grinding device according to claim 1, characterized in that: The operating table is provided with a drainage groove, and the bottom of the drainage groove is provided with a drainage port; The denture polishing device further includes a flushing assembly, which includes: a water storage tank, arranged on the main body; A flushing nozzle is provided on the operating table; A water pump is arranged at the bottom of the operating table; the water inlet of the water pump is connected to the water storage chamber of the water storage tank through a water inlet pipe, and the water outlet of the water pump is connected to the flushing nozzle through a water outlet pipe.

8. The denture grinding device according to claim 7, characterized in that: Also includes: a sewage tank, arranged on the main body; The sewage chamber of the sewage tank is communicated with the drain port through a bellows.

9. The denture grinding device according to claim 8, characterized in that: The height of the operating table surface close to the drainage trough is smaller than the height of the surface away from the drainage trough; A drainage chamfer is also provided on the wall of the dustproof chamber, and the drainage chamfer is used to guide water into the drainage groove.

10. The denture grinding device according to claim 1, characterized in that: The dust cover has two operation holes arranged opposite to each other; The denture grinding device also includes: The diameter of one end of the sleeve is larger than the diameter of the other end, and the end of the sleeve with the larger diameter is detachably connected to the operation hole.

11. The denture grinding device according to claim 1, characterized in that: The operating table is provided with a clamping protrusion; The denture grinding device also includes: The drill bit disc is provided with a plurality of inserting holes for inserting drill bits and a clamping groove adapted to the clamping protrusion, wherein the clamping groove is clamped with the clamping protrusion.

12. The denture grinding device according to claim 1, characterized in that: Also includes: A clamping member having a clamping slot for clamping the electric drill; the clamping member is detachably arranged on the wall of the dustproof chamber; Lighting lamp, located on the top of the dust cover; a base having a storage cavity; The base is arranged at the bottom of the main body; Universal wheels are arranged at the bottom of the base.

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