CN111297504B

CN111297504B - Oral cavity droplet protection instrument

Info

Publication number: CN111297504B
Application number: CN202010220638.1A
Authority: CN
Inventors: 卢俊霖
Original assignee: Guangzhou Tongli Biotechnology Co ltd
Current assignee: Guangzhou Tongli Biotechnology Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-11-02
Anticipated expiration: 2040-03-25
Also published as: CN111297504A

Abstract

The invention discloses an oral cavity droplet protection instrument, wherein a sealed suction arm can rotate 360 degrees and can be arranged outside the oral cavity of a patient by means of self bearing force, manual operation is not needed, and the oral cavity droplet protection instrument is convenient for medical workers to work, has super strong suction force, can suck droplets without being placed in the oral cavity, and cannot influence the treatment operation of the medical workers.

Description

Oral cavity droplet protection instrument

Technical Field

The invention relates to dust collection/smoking and water mist absorption in industry/laboratories, belongs to the technical field of traditional Chinese medicine and dentistry, and particularly relates to an oral cavity droplet protection instrument.

Background

During the process of tooth treatment, instruments such as a dental high-speed handpiece/dental scaler and the like are used, a lot of water mist and spray can be sprayed out of the oral cavity of a patient, the spray contains blood and saliva and is easy to spray to a dentist, the hand/chest and the face of an assistant and the periphery of a dental chair, so that medical staff are easy to passively infect. Aerosols emitted from the mouth of a patient, which contain various viruses and bacteria, float in the air and then enter the body of medical or other personnel through breathing, which can have adverse health effects. Whereas in order to remove the spray and aerosol, a strong suction device for sucking the spray and aerosol emanating from the mouth of the patient is provided in the dental chair.

In general, the strong suction device mainly uses a negative suction pipe of a dental chair to connect with a plastic suction port to suck the spray and aerosol, and a person needs to hold the suction port to face the oral cavity of a patient by hands. However, the strong suction devices on the market have the following disadvantages:

1. the diameter of the suction port is small, and the droplets are not completely sucked away; 2. the manual operation is very inconvenient and the labor cost is high; 3. the noise is bigger, seriously influences medical personnel normal work. 4, strong suction force is weak, and flow is insufficient; 5, suction is needed to be close to the oral cavity, so that the treatment operation of medical staff is influenced.

Disclosure of Invention

The technical problem mainly solved by the invention is to provide an oral cavity droplet protector, wherein an attraction arm can be arranged outside the oral cavity of a patient by means of self bearing force, droplets can be sucked without approaching the oral cavity, manual operation is not needed, the treatment operation of medical staff is not influenced, the mouth mask of the attraction arm is large in caliber, has super strong suction force and can completely suck the droplets, and in addition, the oral cavity droplet protector is low in noise, so that the normal work of the medical staff is not influenced.

In order to solve the technical problems, the invention adopts a technical scheme that: the oral cavity spray protection instrument comprises a first exhaust fan and a HEPA filter, and is characterized by also comprising an attraction arm which can be rotatably arranged by 360 degrees; a base; the inner machine box body is arranged on the base, a first accommodating cavity is arranged in the inner machine box body, a first through hole communicated with the first accommodating cavity is formed in the top of the inner machine box body, and one end of the suction arm is connected with the first through hole of the inner machine box body; the conical filter is arranged at the top in the first accommodating cavity and is connected with the first through hole, and a first drainage hole is formed in the bottom of the conical filter; the first supporting plate is arranged in the first accommodating cavity and is positioned below the conical filter, and a second through hole is formed in the first supporting plate; the water containing equipment is arranged on the first supporting plate through a supporting frame, the water containing equipment is positioned below the conical filter, the first exhaust fan is arranged in the first containing cavity and positioned below the first supporting plate, and an air suction opening of the first exhaust fan is connected with the second through hole of the first supporting plate; the second supporting plate is arranged in the first accommodating cavity and is positioned below the first exhaust fan, and a third through hole is formed in the second supporting plate; one end of the air guide pipe is communicated with the air outlet of the first exhaust fan, and the other end of the air guide pipe is communicated with the third through hole of the second supporting plate; the HEPA filter is detachably arranged below the second supporting plate, the air guide pipe is wrapped with a silencing material layer, and a drainage elbow used for being connected with a drainage pipe is arranged at the bottom of the water containing equipment.

Further, the conical filter comprises a first stainless steel mesh layer in a conical shape, a second stainless steel mesh layer in a conical shape, and a filter material layer which is arranged between the first stainless steel mesh layer and the second stainless steel mesh layer and is in a conical shape, wherein the top end of the first stainless steel mesh layer is arranged below the first through hole.

Furthermore, a plurality of hollow holes are formed in the supporting frame, the air guide pipe is square, a connecting block is arranged at one end of the air guide pipe, and the connecting block is arranged in the second supporting plate in a threaded connection mode.

Further, the side of interior machine box be equipped with first accept the cavity intercommunication and be used for removing the opening of HEPA filter, be equipped with in the first cavity of acceping of interior machine box and be in the opening below and be used for supporting the third backup pad of HEPA filter, wherein the second backup pad is in the open-ended top, the bottom both sides of second backup pad are provided with first curb plate and second curb plate respectively, just first curb plate with the second curb plate is in respectively open-ended both sides, so that the HEPA filter passes through the opening is followed first curb plate with the second curb plate slides extremely in the first cavity of acceping.

Furthermore, a first air outlet and a second air outlet which are communicated with the first accommodating cavity are respectively arranged on two sides of the bottom of the inner machine box body, a first air baffle which is positioned outside the first air outlet and a second air baffle which is positioned outside the second air outlet are also respectively arranged on two sides of the bottom of the inner machine box body, a plurality of rows of first exhaust fans are arranged at the top of the first air baffle, and a plurality of rows of second exhaust fans are arranged at the top of the second air baffle.

Further, the method also comprises the following steps: the outer box sets up on the base, wherein the outer box is equipped with the second and accepts the cavity, the interior machine box is acceptd in the cavity is acceptd to the second, just the both sides of outer box are provided with first air-out region and second air-out region respectively along its length direction, wherein the interval is provided with a plurality of first exhaust vents in the first air-out region, the interval is provided with a plurality of second exhaust vents in the second air-out region.

Further, the attraction arm includes: one end of the supporting pipe is connected with the first through hole of the inner machine box body; one end of the first suction arm is hermetically and rotatably connected with the other end of the supporting tube; one end of the second suction arm is hermetically and rotatably connected with the other end of the first suction arm; one end of the third suction arm is hermetically and rotatably connected with the other end of the second suction arm; one end of each of the at least two bent pipes is hermetically and rotatably connected with the other end of the third suction arm; one end of the mask is hermetically and rotatably connected with the other ends of the at least two bent pipes; the radian of any two of the at least two bent pipes is different, and the length of any two of the at least two bent pipes is different.

Further, a joint of one end of the first suction arm and the other end of the support tube, a joint of one end of the second suction arm and the other end of the first suction arm, a joint of one end of the third suction arm and the other end of the second suction arm, a joint of one end of the at least two bent tubes and the other end of the third suction arm, a joint of any two bent tubes of the at least two bent tubes, and a joint of one end of the mask and the other ends of the at least two bent tubes are all formed by bearing joints, wherein the bearing joints include:

the lower elbow is provided with a first flow through hole, a first pipe body is arranged in the first flow through hole of the lower elbow, and a first groove communicated with the first pipe body is formed in the bottom of one end of the lower elbow; the first flow through hole is provided with a first pipe body which corresponds to the first pipe body and is connected with the first pipe body in a sealing way, and the top of one end of the upper elbow is provided with a first groove which is communicated with the first pipe body;

the inner bobbin is arranged in the first pipe body and the second pipe body in a penetrating mode, one end of the inner bobbin is fixedly arranged in a first groove of the lower elbow, and a clamping plate clamped in a second groove is arranged at the other end of the inner bobbin; the supporting rod is movably arranged in the inner cylinder tube in a penetrating way; the key body is accommodated in the first groove, and the key body is fixedly connected with one end of the supporting rod; the clamping body is accommodated in the second groove, and the clamping body is connected with the other end of the supporting rod; the spring is accommodated in the first groove, one end of the supporting rod penetrates through the spring, one end of the spring is connected with the key body, and the other end of the spring is arranged on the bottom wall of the first groove; the second groove is cylindrical, a first internal gear is arranged on the inner wall of the second groove, the clamping body is cylindrical, and a first external gear used for being meshed with the first internal gear of the second groove is arranged on the outer wall of the clamping body.

Further, the second recess is close to the inner wall of the one end of first recess is equipped with first internal gear, the card is put the body and is close to the outer wall of the one end of first recess is equipped with first external gear, wherein press the key body orientation the card put a side of the body with the distance of the diapire of first recess is less than the length of spring under the normal condition, just the other end of interior bobbin is provided with at least one rectangular fluting along its length direction, the other end of bracing piece is equipped with along its length direction and is used for the card to put at least one rectangular card strip in at least one rectangular fluting.

Further, the mask includes: one end of the mask main body is hermetically and rotatably connected with the other ends of the at least two bent pipes, wherein an accommodating through hole is formed in the mask main body along the length direction of the mask main body, an accommodating groove communicated with the accommodating through hole is formed in the other end of the mask main body, and a water outlet for draining water is formed in the accommodating groove; a sound absorbing material body accommodated in the accommodating through hole of the mask body; the length of the sound absorbing material body is smaller than that of the accommodating through hole, the other end of the mask main body is provided with a collecting groove communicated with the accommodating through hole, the collecting groove is communicated with the accommodating groove, the collecting groove is in a long strip shape, the horizontal plane where the bottom of the collecting groove is located is lower than the horizontal plane where the bottom of the accommodating groove is located, a baffle is arranged at the end of the other end of the mask main body, and the baffle, the accommodating groove and the collecting groove are located in the same straight line direction.

The invention has the beneficial effects that: different from the condition of the prior art, the suction arm of the oral cavity droplet protection instrument disclosed by the invention can rotate 360 degrees and can be arranged outside the oral cavity of a patient by means of self bearing force, so that manual operation is not needed, the operation of medical staff is facilitated, the oral cavity droplet protection instrument has super strong suction force, droplets can be sucked without being close to the oral cavity, the treatment operation of the medical staff is not influenced, further, the tail end of the suction arm is provided with a mask, the aperture of the mask is large, the droplets can be completely sucked away, in addition, the suction arm and the machine box body of the oral cavity droplet protection instrument are provided with noise reduction materials, the noise of the whole protection instrument is small during the operation, the normal operation of the medical staff is not influenced, meanwhile, an HEPA filter is detachably arranged, the replacement and the maintenance are convenient, a first wind shield and a second wind shield are respectively arranged on two sides of the bottom of the inner machine box body, the top of first deep bead is equipped with the first exhaust fan of multirow, and the top of second deep bead is equipped with the second exhaust fan of multirow, can further strengthen the amortization and fall the function of making an uproar to do not influence medical personnel's normal work.

Drawings

FIG. 1 is a schematic perspective view of the oral spray device of the present invention;

FIG. 2 is a first schematic structural view of an inner housing of the oral spray device of FIG. 1;

FIG. 3 is a second schematic diagram of the inner housing of the oral spray device of FIG. 1;

FIG. 4 is a third schematic diagram of the inner housing of the oral spray device of FIG. 1;

FIG. 5 is a fourth schematic diagram of the inner housing of the oral spray device of FIG. 1;

FIG. 6 is a first partial schematic structural view of an inner unit housing of the oral spray protection device of FIG. 1;

FIG. 7 is a second partial schematic structural view of an inner unit casing of the oral spray protection device of FIG. 1;

FIG. 8 is a third partial structural schematic view of an inner unit casing of the oral spray protection device in FIG. 1;

FIG. 9 is a schematic structural diagram of a water containing device of an inner machine box body of the oral cavity spray protection instrument in FIG. 1;

FIG. 10 is a schematic view of the structure of the suction arm of the oral spray device of the present invention;

FIG. 11 is a perspective view of the weight bearing joint of the suction arm of FIG. 10;

figure 12 is a schematic view of a first partial structure of the weight-bearing joint of figure 11;

figure 13 is a second partial schematic structural view of the weight-bearing joint of figure 11;

figure 14 is a third partial structural view of the weight-bearing joint of figure 11;

figure 15 is a fourth partial schematic structural view of the weight-bearing joint of figure 11;

figure 16 is a fifth partial structural view of the weight-bearing joint of figure 11;

figure 17 is a sixth partial schematic structural view of the weight-bearing joint of figure 11;

figure 18 is a schematic view of the retainer of the weight bearing joint of figure 11;

FIG. 19 is a schematic view of the inner barrel of the weight bearing joint of FIG. 11;

figure 20 is a schematic view of the support bar of the weight bearing joint of figure 11;

FIG. 21 is a perspective view of the mask of the suction arm of FIG. 10;

fig. 22 is a schematic view of the mask body of the mask of fig. 21.

Detailed Description

Referring to fig. 1-22, the oral cavity spray protection device includes a suction arm capable of rotating 360 degrees, a base 11, an outer box 12, an inner box 13, a conical filter, a first support plate 14, a water containing device 15, a first exhaust fan 16, a second support plate 17, an air guide pipe 18 and a HEPA filter 19.

The suction arm comprises a support pipe 20 used for being connected with the inner machine box body 13, a first suction arm 21 rotationally connected with the support pipe 20, a second suction arm 22 rotationally connected with the first suction arm 21, a third suction arm 23 rotationally connected with the second suction arm 22, at least two bent pipes rotationally connected with the third suction arm 23 and a mask 26.

It is worth noting that the third exhaust fan is arranged in the suction arm of the embodiment, so that the suction force of the whole suction arm is strong, the flow rate of wind is large, and the spray can be completely sucked away without being close to the oral cavity. Preferably, a small third suction fan is arranged in the support tube 20, the first suction arm 21, the second suction arm 22 or the third suction arm 23.

One end of the support pipe 20 is connected to the first through hole 130 of the inner unit case 13.

One end of the first suction arm 21 is sealingly and rotatably connected with the other end of the support pipe 20.

One end of the second suction arm 22 is hermetically and rotatably connected with the other end of the first suction arm 21.

One end of the third suction arm 23 is hermetically and rotatably connected with the other end of the second suction arm 22.

One end of at least two bent pipes which are rotatably connected is hermetically and rotatably connected with the other end of the third suction arm 23.

One end of the mask 26 is sealingly and rotatably connected to the other end of the at least two curved tubes. It is understood that the mask 26 of the present embodiment has a large aperture ratio and can completely suck away the droplets.

In this embodiment, the radians of any two of the at least two bent tubes are all different, and the lengths of any two of the at least two bent tubes are all different. It should be understood that the at least two bends may include two, three, four, five or more bends, and that varying the length of the adjustment arm may be accomplished by rotating the bends due to the different curvatures of any two of the at least two bends and the different lengths of any two of the at least two bends.

In this embodiment, one of any two adjacent bent tubes of the at least two bent tubes is provided with a first annular clamping portion, and the other of any two adjacent bent tubes of the at least two bent tubes is in threaded connection with a plurality of first clamping blocks along the circumferential direction of the cross section of the other bent tube, wherein one end of each first clamping block is provided with a first bending block clamped outside one side end of the first clamping portion. It should be understood that, in at least two return bends any two adjacent return bends in the circumference direction of its cross section interval is provided with first screw hole, and first card puts the piece and is provided with the second screw hole that corresponds with first screw hole to make first screw threaded connection in second screw hole and first screw hole. In addition, the first bending block of the first clamping block can clamp the first clamping part, so that one of any two adjacent bent pipes in the at least two bent pipes and the other of any two adjacent bent pipes in the at least two bent pipes cannot be separated from each other.

In this embodiment, a joint between one end of the first suction arm 21 and the other end of the support tube 20, a joint between one end of the second suction arm 22 and the other end of the first suction arm 21, a joint between one end of the third suction arm 23 and the other end of the second suction arm 22, a joint between one end of at least two bent tubes and the other end of the third suction arm 23, a joint between any two bent tubes of the at least two bent tubes, and a joint between one end of the mask 26 and the other end of at least two bent tubes are all formed by load-bearing joints. It should be understood that the bearing joint can realize the effects of sealing, rotating and bearing, so that the whole suction arm does not need to be manually supported, and the labor cost is greatly reduced.

Specifically, the bearing joint comprises a lower elbow 30, an upper elbow 31, an inner bobbin 32, a support rod 33, a key body 34, a clamping body 35 and a spring 36.

The lower elbow 30 is provided with a first flow through hole, wherein a first pipe 301 is arranged in the first flow through hole of the lower elbow 30, and a first groove 302 communicated with the first pipe 301 is arranged at the bottom of one end of the lower elbow 30. It is to be understood that the lower bend 30 is a curved pipe body in which the opening of one end of the lower bend 30 is oriented toward the opening of the other end of the lower bend 30 differently, and the first pipe body 301 of the present embodiment is disposed at the center of the opening of one end of the lower bend 30.

One end of the upper bend 31 is rotatably and sealingly disposed on one end of the lower bend 30. Specifically, one of the one end of the upper elbow 31 and the one end of the lower elbow 30 is provided with an annular receiving groove, and the other of the one end of the upper elbow 31 and the one end of the lower elbow 30 is provided with an annular protruding portion rotatably disposed in the receiving groove, so that the one end of the upper elbow 31 and the one end of the lower elbow 30 are rotatably disposed. Further, a sealing ring is disposed between the protrusion and the receiving groove, so that one end of the upper elbow 31 is hermetically connected with one end of the lower elbow 30.

In this embodiment, the upper elbow 31 is provided with a second flow through hole communicated with the first flow through hole, and the second flow through hole of the upper elbow 31 is provided with a second pipe 311 corresponding to and hermetically connected with the first pipe 301. It will be appreciated that when one end of the upper bend 31 is connected to one end of the lower bend 30, the first tube 301 is also connected to the second tube 311. Further, a seal ring is provided at the joint between the first pipe 301 and the second pipe 311.

In this embodiment, the top of one end of the upper elbow 31 is provided with a second groove 312 communicated with the second pipe 311. It will be appreciated that when one end of the upper bend 31 is disposed on one end of the lower bend 30, the second groove 312 is above the first groove 302.

The inner bobbin 32 is inserted into the first pipe 301 and the second pipe 311. It should be understood that the inner bobbin 32 has a cylindrical shape.

Preferably, a first bearing 3011 is disposed between the first pipe 301 and the inner bobbin 32, and a second bearing 3111 is disposed between the second pipe 311 and the inner bobbin 32.

In this embodiment, one end of the inner bobbin 32 is fixedly disposed in the first groove 302 of the lower elbow 30, and the other end of the inner bobbin 32 is disposed with a locking plate 321 locked in the second groove 312. It should be understood that the engaging plate 321 is engaged with the second tube 311.

Preferably, a first nut 3021 is provided in the first groove 302 to be threadedly coupled to an end of the inner barrel 32, so that the end of the inner barrel 32 is fixedly disposed in the first groove 302 of the lower elbow 30, and the inner barrel 32 does not rotate relative to the lower elbow 30.

Further, a third groove is formed in the first groove 302 of the present embodiment, wherein a first connecting body 3022 is formed in the third groove, and one end of the inner barrel 32 is disposed in the first connecting body 3022. It should be understood that the first connecting body 3022 is to fix the inner bobbin 32 such that the inner bobbin 32 cannot rotate with respect to the lower elbow 30.

Preferably, the third groove has a polygonal shape, wherein the first connecting body 3022 has a polygonal shape, so that the first connecting body 3022 can be fixedly clamped in the third groove, thereby preventing the inner barrel 32 from rotating relative to the lower elbow 30. That is, the shape of the first connecting body 3022 is the same as the shape of the third recess, and if the third recess is three-sided, the first connecting body 3022 is three-sided.

Preferably, the first connector 3022 is between the first nut 3021 and the retainer 35.

Further, the first connecting body 3022 is provided with a first locking hole, one end of the inner bobbin 32 is inserted into the first locking hole, wherein a first horizontal plane 322 is provided at one end of the inner bobbin 32 along the length direction thereof, and a second horizontal plane corresponding to the first horizontal plane 322 is provided in the first locking hole. It should be understood that the first locking hole is circular and a second horizontal plane corresponding to the first horizontal plane 322 is disposed in the first locking hole, so that when the inner bobbin 32 is inserted into the first locking hole, the first horizontal plane 322 and the second horizontal plane are locked with each other, such that the inner bobbin 32 cannot rotate in the first locking hole, and the inner bobbin 32 cannot rotate relative to the lower elbow 30.

The support rod 33 is movably arranged in the inner bobbin 32 in a penetrating way. It should be understood that the support rod 33 has a cylindrical shape.

In this embodiment, the other end of the inner bobbin 32 is provided with at least one elongated slot 323 along the length direction thereof, wherein the other end of the support rod 33 is provided with at least one elongated locking strip 331 along the length direction thereof for being locked in the at least one elongated slot 323.

Preferably, the at least one elongated slot 323 comprises two elongated slots 323 symmetrically disposed at the other end of the inner bobbin 32, and the at least one elongated locking strip 331 comprises two elongated locking strips 331 symmetrically disposed at the other end of the supporting rod 33. It should be understood that the strip 331 is locked in the strip groove 323, so that the inner bobbin 32 and the support bar 33 cannot rotate relative to each other, i.e. the lower elbow 30 is fixedly connected to the inner bobbin 32, and the support bar 33 is fixedly connected to the inner bobbin 32.

It should be noted that the upper elbow 31 is supported by the inner tube 32 and the support rod 33, so that the bearing force of the whole joint is large.

The key body 34 is accommodated in the first groove 302, wherein the key body 34 is fixedly connected with one end of the supporting rod 33. It should be understood that the key body 34 of the present embodiment can be lifted in the first groove 302, so that the supporting rod 33 is driven to move in the inner barrel 32 by pressing the key body 34.

The spring 36 is received in the first groove 302, wherein one end of the support rod 33 is inserted into the spring 36. Further, one end of the spring 36 is connected to the key body 34, and the other end of the spring 36 is disposed on the bottom wall of the first groove 302. That is, the spring 36 is disposed between the key body 34 and the bottom wall of the first recess 302.

It should be understood that, since the spring 36 is disposed between the key body 34 and the bottom wall of the first groove 302, when the key body 34 is pressed to move toward the card placing body 35, the spring 36 exerts a force on the key body 34, so that the spring 36 pushes the key body 34 to move away from the card placing body 35.

Preferably, a side of the key body 34 facing the engaging body 35 is provided with an engaging groove for receiving one end of the spring 36.

The engaging member 35 is received in the second groove 312, wherein the engaging member 35 is connected to the other end of the supporting rod 33. It should be understood that the engaging member 35 is connected to the other end of the supporting rod 33, so that the engaging member 35 can be driven to move up and down in the second groove 312 by the movement of the supporting rod 33.

In this embodiment, the second recess 312 has a cylindrical shape, the first internal gear 3121 is disposed on an inner wall of the second recess 312, the engaging body 35 has a cylindrical shape, and the first external gear 351 engaged with the first internal gear 3121 of the second recess 312 is disposed on an outer wall of the engaging body 35.

Preferably, the first internal gear 3121 is disposed in the inner wall of the second groove 312 near one end of the first groove 302, and the first external gear 351 is disposed on the outer wall of the clamping body 35 near one end of the first groove 302, so that when the supporting rod 33 ascends (when the clamping body 35 moves away from the first groove 302), the supporting rod 33 drives the clamping body 35 to ascend to make the first external gear 351 of the clamping body 35 not engage with the first internal gear 3121 of the second groove 312, so that the upper elbow 31 can rotate relative to the lower elbow 30, when the supporting rod 33 descends (when the clamping body 35 moves close to the first groove 302), the supporting rod 33 drives the clamping body 35 to descend to make the first external gear 351 of the clamping body 35 engage with the first internal gear 3121 of the second groove 312, so that the upper elbow 31 can be clamped by the clamping body 35 to rotate relative to the lower elbow 30, so that the load-bearing force is large, and the angle adjustment is flexible, and the connection between the upper elbow 31 and the lower elbow 30 is stable, and the rotation cannot be influenced by external force.

In this embodiment, a fourth groove 352 is disposed on a side surface of the fastening body 35 facing the key body 34, a second connecting body 353 is disposed in the fourth groove 352, and the other end of the supporting rod 33 is disposed in the second connecting body 353. It should be understood that the second connecting member 353 of the present embodiment can be disposed in the fourth groove 352 of the locking member 35 by a screw connection manner, and in addition, since the other end of the supporting rod 33 is disposed in the second connecting member 353 and the second connecting member 353 is disposed in the fourth groove 352, the other end of the supporting rod 33 can drive the second connecting member 353 to go up and down, so as to drive the locking member 35 to go up and down.

Preferably, the fourth recess 352 has a polygonal shape, and the second connecting body 353 has a polygonal shape, so that the second connecting body 353 can be fixedly clamped in the fourth recess 352, and the support rod 33 cannot rotate relative to the clamping body 35. That is, the shape of the second connecting body 353 is the same as the shape of the fourth recess 352, for example, the fourth recess 352 is three-sided, and the second connecting body 353 is three-sided.

Preferably, the second connecting body 353 is provided with a second fastening hole, the other end of the supporting rod 33 is inserted into the second fastening hole, wherein the other end of the supporting rod 33 is provided with a third horizontal plane 332 along the length direction thereof, and a fourth horizontal plane corresponding to the third horizontal plane 332 is arranged in the second fastening hole. It should be understood that the second engaging hole is circular, and a fourth horizontal plane corresponding to the third horizontal plane 332 is disposed in the second engaging hole, so that when the other end of the supporting rod 33 is inserted into the second engaging hole, the third horizontal plane 332 and the fourth horizontal plane are engaged with each other, such that the supporting rod 33 cannot rotate in the second engaging hole, and the supporting rod 33 cannot rotate relative to the engaging body 35.

In this embodiment, a distance between a side surface of the key body 34 facing the card placing body 35 and the bottom wall of the first groove 302 is smaller than a length of the spring 36 in a normal state. That is, when the key body 34 is not pressed, the spring 36 pushes the key body 34 to move away from the engaging body 35, so that the engaging body 35 moves toward the first groove 302, and the first external gear 351 of the engaging body 35 and the first internal gear 3121 of the second groove 312 engage with each other, so that the upper elbow 31 can be engaged with the engaging body 35 and cannot rotate relative to the lower elbow 30.

The mask 26 includes a mask body 260 and a sound absorbing material body 261.

One end of the mask body 260 is hermetically and rotatably connected to the other ends of the at least two bent tubes.

In the present embodiment, the mask body 260 is provided with a housing through-hole 2601 along a length direction thereof to extract the spray and saliva discharged from the oral cavity of the patient through the housing through-hole 2601.

In this embodiment, the other end of the mask body 260 is provided with a housing groove 2604 communicating with the housing through hole 2601. It should be understood that the housing recess 2604 is located on the inner wall of the mask body 260, and the housing recess 2604 can contain water and accumulated water, so that the water in the housing through hole 2601 of the mask body 260 is not easy to drop from the mask body 260, and the water in the suction arm is not easy to drop on the ground or on the patient, which can effectively reduce the environmental pollution.

It is noted that, when the mask is used to extract spray and saliva, the side of the mask body 260 provided with the housing groove 2604 is disposed close to the ground so that water can be housed through the housing groove 2604.

Preferably, a drain port 2605 for draining water is provided in the housing recess 2604, so that water in the housing recess 2604 can be drained through the drain port 2605, so that the water in the mask body 260 does not fall from the edge or other positions of the mask body 260, and the water in the suction arm is not easy to fall on the ground or on the patient, which can effectively reduce environmental pollution.

In this embodiment, a pinhole tube is removably disposed in the water outlet 2605 of the housing recess 2604 to discharge water in the housing recess 2604 through the pinhole tube. Further, a silicone tube is disposed at an end of the pinhole tube far from the water outlet 2605, and a second exhaust fan is disposed at an end of the silicone tube to suck water in the accommodating groove 2604 through the silicone tube by the second exhaust fan.

Further, the other end of the mask body 260 of the present embodiment is provided with a collecting groove 2606 communicating with the housing through hole 2601, and the collecting groove 2606 communicates with the housing groove 2604.

Preferably, the collecting groove 2606 is formed in an elongated shape, wherein the collecting groove 2606 is formed along the length direction of the mask body 260, and the bottom of the collecting groove 2606 is located at a lower level than the bottom of the housing groove 2604, so that the water in the collecting groove 2606 can be discharged into the housing groove 2604.

In this embodiment, the end of the other end of the mask body 260 is provided with a stopper 2607 to block water by the stopper 2607 so that water cannot fall out from the edge end of the mask body 260 (i.e., the edge of the other end of the mask body 260).

Preferably, the baffle 2607, the housing groove 2604, and the collection slot 2606 are in the same linear orientation. It should be understood that, when the mask is used, the side of the mask body 260 where the housing groove 2604 is provided is disposed close to the ground, and since the baffle 2607, the housing groove 2604 and the collecting groove 2606 are in the same linear direction, the water in the mask body 260 is collected in the housing groove 2604.

Note that the bottom of the shutter 2607 is at a higher level than the bottom of the housing groove 2604, so that water in the mask body 260 is collected in the housing groove 2604.

The sound absorbing material body 261 is housed in the housing through hole 2601 of the mask body 260. It should be understood that the sound absorbing material body 261 is adhered to the receiving through hole 2601 of the mask body 260, and the suction arm generates a high flow rate of wind speed when extracting the spray and the saliva, and the high flow rate of wind speed generates a high frequency noise, and in addition, the sound absorbing material body 261 of the present embodiment has a sound absorbing function, so that the high frequency noise generated by the high flow rate of wind speed can be reduced, so that the mask has a sound absorbing function, noise can be reduced, and user experience can be greatly improved.

Preferably, the sound absorbing material body 261 has a length smaller than that of the housing through hole 2601.

In the present embodiment, the sound-absorbing material body 261 is provided with the flow holes 2611 in the length direction of the mask body 260 so that the spray and the saliva flow through the flow holes 2611.

Preferably, the flow holes 2611 are in a cross-shape or a field shape. Certainly, in this embodiment, the flow holes 2611 are not limited to be in a shape of a Chinese character jing or a shape of a field, and in other embodiments, the flow holes 2611 may also be in other shapes, which is not described herein.

The bottom of base 11 is equipped with a plurality of pulleys 111, conveniently removes.

The inner unit box body 13 is arranged on the base 11, wherein a first accommodating cavity is arranged in the inner unit box body 13, and a first through hole 130 communicated with the first accommodating cavity is arranged at the top of the inner unit box body 13.

Preferably, one end of the support pipe 20 of the suction arm is connected to the first through hole 130 of the inner unit case 13 so that the mist sucked from the suction arm enters the inner unit case 13 from the first through hole 130. Specifically, the support tube of the suction arm is connected to the first through hole 130.

The conical filter is disposed at the top in the first receiving cavity, wherein the conical filter is connected to the first through hole 130, so that the spray entering from the first through hole 130 is filtered by the conical filter.

Preferably, the bottom of the conical filter is provided with a first drain hole so that water formed in the conical filter can be discharged through the first drain hole.

It will be appreciated that as the spray enters the conical filter, the gas in the spray can pass directly through the conical filter and the water in the spray can accumulate in the conical filter and flow down the edge of the conical filter to exit the first drain hole, enabling moisture separation.

In this embodiment, the conical filter includes a first stainless steel mesh layer having a conical shape, a second stainless steel mesh layer having a conical shape, and a filter material layer having a conical shape and disposed between the first stainless steel mesh layer and the second stainless steel mesh layer, wherein a top end of the first stainless steel mesh layer is disposed below the first through hole. It is understood that the diameter of the top end of the first stainless steel mesh layer is larger than the diameter of the bottom end of the first stainless steel mesh layer.

It is understood that, since the top end of the first stainless steel mesh layer is disposed below the first through hole, the spray entering from the first through hole 130 is filtered entirely by the conical filter.

The first support plate 14 is disposed in the first receiving cavity, and the first support plate 14 is located below the conical filter. Preferably, the first support plate 14 has a second through hole 141 therein.

It should be understood that the first supporting plate 14 is horizontally disposed in the first receiving cavity, and the first supporting plate 14 divides the first receiving cavity into two cavities which are not communicated with each other, so that the gas filtered by the conical filter can be outputted only from the second through hole 141.

In this embodiment, the edge of the first support plate 14 is provided with a first baffle 142 disposed towards the conical filter. It should be understood that the first baffle 142 is disposed at the edge of the first support plate 14, so as to form a receiving groove.

The water receiving device 15 is arranged on the first support plate 14 by means of a support frame 151, wherein the water receiving device 15 is located below the conical filter. It will be appreciated that since the water receiving device 15 is located below the conical filter, the water discharged from the first drain hole of the conical filter and the water flowing down along the outer edge of the conical filter are received in the water receiving device 15.

In the present embodiment, the bottom of the water receiving apparatus 15 is provided with a drain elbow 152 for connection with a drain pipe, so that the water in the water receiving apparatus 15 is discharged through the drain elbow 152.

Further, a plurality of hollow holes are formed in the supporting frame 151, so that the gas can rapidly enter the second through holes 141 of the first supporting plate 14.

Preferably, the water containment device 15 is a stainless steel bowl.

A first suction fan 16 is disposed in the first receiving cavity below the first support plate 14. Preferably, the suction opening of the first suction fan 16 is connected to the second through hole 141 of the first support plate 14 so that the gas filtered by the conical filter enters the first suction fan 16 from the second through hole 141. It will be appreciated that the first suction fan 16 primarily powers the first receiving cavity so that spray can flow in the direction of the conical filter, the first support plate 14 and the first suction fan 16.

The second supporting plate 17 is disposed in the first accommodating cavity and below the first exhaust fan 16. It should be understood that the second support plate 17 may be used to support the first suction fan 17.

Preferably, the second support plate 17 has a third through hole 171 provided therein.

One end of the air guiding pipe 18 is communicated with the air outlet of the first suction fan 16, and the other end of the air guiding pipe 18 is communicated with the third through hole 171 of the second supporting plate 17, so that the air exhausted from the first suction fan 16 is output from the air guiding pipe 18.

Preferably, the air guide duct 18 is arranged in the first housing cavity along the vertical direction.

In the present embodiment, the air duct 18 is square, wherein a connecting block is disposed at one end of the air duct 18, and the connecting block is disposed in the second supporting plate 17 by a threaded connection.

In the present embodiment, the air guiding pipe 18 is wrapped with a sound damping material layer, so that the noise reduction effect is achieved.

The HEPA filter 19 is detachably disposed below the second support plate 17. It will be appreciated that the gas output from the duct 18 will be filtered by the HEPA filter 19.

It should be understood that the HEPA filter 19 of the present embodiment is detachably disposed in the first receiving cavity, so that replacement and maintenance by workers are facilitated.

In the present embodiment, the side surface of the inner unit casing 13 is provided with an opening that communicates with the first accommodation chamber and is used for moving the HEPA filter 19, so that the HEPA filter 19 can be put into the first accommodation chamber through the opening or the HEPA filter 19 in the first accommodation chamber can be taken out of the opening.

Further, a third support plate for supporting the HEPA filter 19 is disposed in the first receiving cavity of the inner unit casing 13 below the opening. It is to be understood that the third support plate is disposed at an inner wall edge of the first receiving cavity so as not to excessively block the gas flow.

Preferably, the second supporting plate 17 is located above the opening, and the first side plate 173 and the second side plate 174 are respectively disposed on two sides of the bottom of the second supporting plate 17, and the first side plate 173 and the second side plate 174 are respectively located on two sides of the opening, so that the HEPA filter 19 slides along the first side plate 173 and the second side plate 174 into the first receiving cavity through the opening.

In this embodiment, a first air outlet 131 and a second air outlet 132 communicated with the first accommodating cavity are respectively disposed on two sides of the bottom of the inner cabinet 13. It should be understood that the air filtered by the HEPA filter 19 is exhausted through the first and

second air outlets

131 and 132.

Preferably, two sides of the bottom of the inner unit case 13 are further respectively provided with a first wind deflector 133 outside the first wind outlet 131 and a second wind deflector 134 outside the second wind outlet 132.

In this embodiment, the first wind guard 133 is provided at the top thereof with a plurality of rows of first exhaust fans 1331, and the second wind guard 134 is provided at the top thereof with a plurality of rows of second exhaust fans 1341. It is to be understood that the first exhaust fan 1331 and the second exhaust fan 1341 can further perform noise reduction and noise reduction functions.

It should be understood that the first wind guard 133 is spaced apart from one side of the internal housing 13, and the second wind guard 134 is spaced apart from the other side of the internal housing 13, so that the air discharged from the first air outlet 131 is blocked by the first wind guard 133, so that the air discharged from the first air outlet 131 rises along the first wind guard 133 and is finally discharged from the first exhaust fans 1331, and the air discharged from the second air outlet 132 is blocked by the second wind guard 134, so that the air discharged from the second air outlet 132 rises along the second wind guard 134 and is finally discharged from the second exhaust fans 1341.

The outer box 12 is disposed on the base 11, wherein the outer box 12 has a second receiving cavity, and the inner box 13 is received in the second receiving cavity.

In this embodiment, the two sides of the outer box 12 are respectively provided with a first wind outlet area 121 and a second wind outlet area along the length direction thereof, so that the gas discharged from the inner box 13 is discharged from the first wind outlet area 121 and the second wind outlet area.

Preferably, a plurality of first air outlet holes are formed in the first air outlet area 121 at intervals, and a plurality of second air outlet holes are formed in the second air outlet area at intervals.

It should be understood that the inner wall of the second receiving cavity of the outer cabinet 12 of the present embodiment is provided with a first sound-insulating material layer, and the inner wall of the first receiving cavity of the inner cabinet 13 is also provided with a second sound-insulating material layer.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an oral cavity droplet protects appearance, includes first air exhauster and HEPA filter, its characterized in that still includes:

the suction arm can be arranged in a 360-degree rotating manner;

a base;

the inner machine box body is arranged on the base, a first accommodating cavity is arranged in the inner machine box body, a first through hole communicated with the first accommodating cavity is formed in the top of the inner machine box body, and one end of the suction arm is connected with the first through hole of the inner machine box body;

the conical filter is arranged at the top in the first accommodating cavity and is connected with the first through hole, and a first drainage hole is formed in the bottom of the conical filter;

the first supporting plate is arranged in the first accommodating cavity and is positioned below the conical filter, and a second through hole is formed in the first supporting plate;

the water containing equipment is arranged on the first supporting plate through a supporting frame, the water containing equipment is positioned below the conical filter, the first exhaust fan is arranged in the first containing cavity and positioned below the first supporting plate, and an air suction opening of the first exhaust fan is connected with the second through hole of the first supporting plate;

the second supporting plate is arranged in the first accommodating cavity and is positioned below the first exhaust fan, and a third through hole is formed in the second supporting plate;

one end of the air guide pipe is communicated with the air outlet of the first exhaust fan, and the other end of the air guide pipe is communicated with the third through hole of the second supporting plate;

the HEPA filter is detachably arranged below the second supporting plate, a silencing material layer is wrapped outside the air guide pipe, and a drainage elbow used for being connected with a drainage pipe is arranged at the bottom of the water containing equipment;

the attraction arm includes:

one end of the supporting pipe is connected with the first through hole of the inner machine box body;

one end of the first suction arm is hermetically and rotatably connected with the other end of the supporting tube;

one end of the second suction arm is hermetically and rotatably connected with the other end of the first suction arm;

one end of the third suction arm is hermetically and rotatably connected with the other end of the second suction arm;

one end of each of the at least two bent pipes is hermetically and rotatably connected with the other end of the third suction arm;

one end of the mask is hermetically and rotatably connected with the other ends of the at least two bent pipes;

the radian of any two of the at least two bent pipes is different, and the length of any two of the at least two bent pipes is different;

the junction of one end of the first suction arm and the other end of the support tube, the junction of one end of the second suction arm and the other end of the first suction arm, the junction of one end of the third suction arm and the other end of the second suction arm, the junctions of one ends of the at least two bent tubes and the other end of the third suction arm, the junctions of any two bent tubes of the at least two bent tubes, and the junctions of one end of the mask and the other ends of the at least two bent tubes are all formed by bearing joints, wherein the bearing joints comprise:

the lower elbow is provided with a first flow through hole, a first pipe body is arranged in the first flow through hole of the lower elbow, and a first groove communicated with the first pipe body is formed in the bottom of one end of the lower elbow;

the first flow through hole is provided with a first pipe body which corresponds to the first pipe body and is connected with the first pipe body in a sealing way, and the top of one end of the upper elbow is provided with a first groove which is communicated with the first pipe body;

the inner bobbin is arranged in the first pipe body and the second pipe body in a penetrating mode, one end of the inner bobbin is fixedly arranged in a first groove of the lower elbow, and a clamping plate clamped in a second groove is arranged at the other end of the inner bobbin;

the supporting rod is movably arranged in the inner cylinder tube in a penetrating way;

the key body is accommodated in the first groove, and the key body is fixedly connected with one end of the supporting rod;

the clamping body is accommodated in the second groove, and the clamping body is connected with the other end of the supporting rod;

the spring is accommodated in the first groove, one end of the supporting rod penetrates through the spring, one end of the spring is connected with the key body, and the other end of the spring is arranged on the bottom wall of the first groove;

the second groove is cylindrical, a first internal gear is arranged on the inner wall of the second groove, the clamping body is cylindrical, and a first external gear used for being meshed with the first internal gear of the second groove is arranged on the outer wall of the clamping body.

2. The oral droplet protection instrument of claim 1, wherein the conical filter comprises a first stainless steel mesh layer having a conical shape, a second stainless steel mesh layer having a conical shape, and a filter material layer having a conical shape disposed between the first stainless steel mesh layer and the second stainless steel mesh layer, wherein a top end of the first stainless steel mesh layer is disposed below the first through hole.

3. The oral cavity droplet protection instrument of claim 1, wherein the supporting frame is provided with a plurality of hollow holes, the air duct is square, one end of the air duct is provided with a connecting block, and the connecting block is arranged in the second supporting plate in a threaded connection manner.

4. The oral cavity droplet protector according to claim 1, wherein an opening communicating with the first accommodating cavity and used for moving the HEPA filter is provided on a side surface of the inner machine case, a third supporting plate below the opening and used for supporting the HEPA filter is provided in the first accommodating cavity of the inner machine case, wherein the second supporting plate is located above the opening, a first side plate and a second side plate are respectively provided on two sides of a bottom of the second supporting plate, and the first side plate and the second side plate are respectively located on two sides of the opening, so that the HEPA filter slides into the first accommodating cavity along the first side plate and the second side plate through the opening.

5. The oral cavity droplet protection instrument according to claim 1, wherein a first air outlet and a second air outlet which are communicated with the first accommodating cavity are respectively arranged on two sides of the bottom of the inner machine box body, a first air baffle which is positioned outside the first air outlet and a second air baffle which is positioned outside the second air outlet are respectively arranged on two sides of the bottom of the inner machine box body, a plurality of rows of first exhaust fans are arranged on the top of the first air baffle, and a plurality of rows of second exhaust fans are arranged on the top of the second air baffle.

6. The oral droplet protection instrument of claim 1, further comprising:

the outer box sets up on the base, wherein the outer box is equipped with the second and accepts the cavity, the interior machine box is acceptd in the cavity is acceptd to the second, just the both sides of outer box are provided with first air-out region and second air-out region respectively along its length direction, wherein the interval is provided with a plurality of first exhaust vents in the first air-out region, the interval is provided with a plurality of second exhaust vents in the second air-out region.

7. The oral droplet protection instrument according to claim 1, wherein the inner wall of the second groove near the end of the first groove is provided with a first inner gear, the outer wall of the clamping body near the end of the first groove is provided with a first outer gear, wherein the distance between a side of the key body facing the clamping body and the bottom wall of the first groove is smaller than the length of the spring in the normal state, the other end of the inner bobbin is provided with at least one elongated slot along the length direction thereof, and the other end of the support rod is provided with at least one elongated locking strip along the length direction thereof for being clamped in the at least one elongated slot.

8. The oral spray device of claim 1, wherein the mouthpiece comprises:

one end of the mask main body is hermetically and rotatably connected with the other ends of the at least two bent pipes, wherein an accommodating through hole is formed in the mask main body along the length direction of the mask main body, an accommodating groove communicated with the accommodating through hole is formed in the other end of the mask main body, and a water outlet for draining water is formed in the accommodating groove;

a sound absorbing material body accommodated in the accommodating through hole of the mask body;

the length of the sound absorbing material body is smaller than that of the accommodating through hole, the other end of the mask main body is provided with a collecting groove communicated with the accommodating through hole, the collecting groove is communicated with the accommodating groove, the collecting groove is in a long strip shape, the horizontal plane where the bottom of the collecting groove is located is lower than the horizontal plane where the bottom of the accommodating groove is located, a baffle is arranged at the end of the other end of the mask main body, and the baffle, the accommodating groove and the collecting groove are located in the same straight line direction.