CN217548244U - Sand blasting device and sand blasting dental scaler - Google Patents

Abstract

The utility model provides a sand blasting device and sand blasting dental scaler, if need carry out the sandblast treatment, can make the soft straight tube switch on, the gas in the air supply enters into the seat that converges through the inlet port, the sand powder of sand powder jar enters into the seat that converges through sand inlet straight tube and sand inlet hole and converges with gas, thus the gas carries this sand powder and loops through soft straight tube and output straight tube by the delivery outlet and leads to the sandblast handle, in order to carry out the sandblast treatment; when the sand blasting treatment needs to be interrupted or stopped, the flexible straight pipe can be cut off, so that the sand blasting handle can not spray sand powder any more. Because whole pipeline except converging seat department have the bending, other all pipelines are the straight line transport mode, consequently can reduce the impact of sand powder to the pipeline, owing to converge the seat and have great wall thickness moreover, consequently the impact of sand powder in converging the seat also can not exert an influence to the reliability of carrying the sand powder, consequently for prior art, has reduced the bending of carrying the sand powder, has improved and has carried the reliability.

Description

Sand blasting device and sand blasting dental scaler

Technical Field

The utility model belongs to the technical field of oral medical instrument technique and specifically relates to a sand blasting unit and sandblast dental scaler are related to.

Background

The sand-blasting tooth cleaner utilizes compressed gas (usually air) to lift dental sand-blasting powder (the main component is usually sodium bicarbonate, glycine or erythritol) to spray on the surface of teeth, and the powder is converged with liquid medium (usually water) sprayed together to play a role in cleaning the surface of teeth, and particularly can remove bacterial plaque, pigment, soft scale, early dental calculus, smoke stain, tea stain and the like on the surfaces of the teeth on the gum and under the gum, and can effectively prevent periodontal disease and maintain the health of the teeth. In order to achieve a continuous sand blasting treatment effect, the used sand blasting equipment is provided with a sand powder tank with enough capacity, and when the sand blasting equipment is in operation, driving air flows through the sand powder tank and carries a part of sand powder to be transmitted through a pipeline and then is sprayed out from a spray head of a sand blasting handle.

However, in the existing sand blasting tooth cleaning equipment, the internal pipeline is bent more, and the sand powder impacts at the bent part, so that the conveying reliability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sand blasting unit and sandblast scaler buckle less, and the sand powder is carried the reliability better.

In a first aspect, the present invention provides a sand blasting device, including:

the sand powder tank is used for storing sand powder;

the converging seat is provided with an air inlet hole, a sand inlet hole and an output hole which are communicated with each other, and the air inlet hole is used for being connected with an air source;

the head end of the sand inlet straight pipe is connected with the sand powder tank, and the tail end of the sand inlet straight pipe is connected with the sand inlet;

the head end of the flexible straight pipe is connected with the output hole, and the pinch valve can be cut off or conducted under the action of external force;

and the head end of the output straight pipe is connected to the tail end of the soft straight pipe, and the tail end of the output straight pipe is used for being connected with a sand blasting handle.

In an optional implementation mode, the converging seat comprises a first side surface, a top surface and a second side surface which are sequentially connected through included angles, the first side surface is opposite to the second side surface, the first side surface is provided with the air inlet hole, the top surface is provided with the sand inlet hole, and the second side surface is provided with the output hole.

In an optional embodiment, the second side surface is provided with an output plugging column, the output hole penetrates through the output plugging column, the head end of the flexible straight pipe is tightly sleeved outside the output plugging column, and the tail end of the flexible straight pipe is tightly sleeved outside the head end of the output straight pipe.

In an optional embodiment, the sandblasting apparatus further includes a first fastening clip and a second fastening clip, the first fastening clip is sleeved outside the head end of the flexible straight pipe, so that the head end of the flexible straight pipe and the output insertion column are tightly attached, and the second fastening clip is sleeved outside the tail end of the flexible straight pipe, so that the tail end of the flexible straight pipe and the head end of the output straight pipe are tightly attached.

In an optional embodiment, the sand blasting device further comprises an air inlet pipe, an air inlet inserting column is arranged on the first side face, the air inlet hole penetrates through the air inlet inserting column, the head end of the air inlet pipe is used for being connected with an air source, and the tail end of the air inlet pipe is tightly sleeved outside the air inlet inserting column.

In an alternative embodiment, the air inlet tube is provided with a one-way valve, which is only used to conduct fluid from the air supply to the air inlet hole.

In an optional implementation manner, the sand blasting device further comprises a machine box and a pinch valve, the sand powder tank is mounted on the outer side of the top wall of the machine box, an isolation bin is arranged on the inner side of the bottom wall of the machine box, the isolation bin is provided with a first port, an accommodating cavity and a second port which are sequentially communicated, the pinch valve is hermetically arranged on the peripheral wall of the isolation bin in a penetrating manner so as to partially extend into the accommodating cavity, the soft straight pipes are all located in the accommodating cavity, the head ends and the tail ends of the soft straight pipes respectively correspond to the first port and the second port, the pinch valve is arranged in the middle of the soft straight pipes in a penetrating manner, the pinch valve can clamp or loosen the soft straight pipes so as to cut off or conduct the soft straight pipes, the converging seat is hermetically matched with the first port, the surface of the converging seat facing the accommodating cavity is provided with the output hole, and the head ends of the output straight pipes are hermetically matched with the second port.

In an optional implementation manner, a window is formed in a bottom wall of the casing, the isolation bin includes a bin body and a cover plate, a bottom of the bin body is open to communicate with the window, the cover plate is detachably connected to the window to define the accommodating cavity together with the bin body, the bin body is respectively provided with the first port and the second port which are opposite to each other, and the pinch valve is hermetically inserted through the bin body.

In an alternative embodiment, the axes of the air inlet holes, the axes of the sand inlet holes and the axes of the output holes are all in the same plane;

and/or the presence of a gas in the gas,

at least one of the sand inlet straight pipe and the sand outlet straight pipe is made of hard materials.

In a second aspect, the present invention provides a blasting dental scaler comprising a blasting handle and a blasting device according to any of the preceding embodiments.

The utility model discloses sand blasting unit and sandblast dental scaler, if the sandblast treatment needs to be carried out, can make soft straight tube switch on, gas in the air supply passes through the inlet port and gets into in the seat that converges, the sand powder of sand powder jar gets into through advancing the sand straight tube and advancing the sand hole and converge with gas in the seat that converges, thereby gas carries this sand powder and loops through soft straight tube and output straight tube by the delivery outlet and accesss to the sandblast handle, and when needs interrupt or stop the sandblast treatment, can make soft straight tube end, the gas that carries the sand powder from this is by the separation, thereby the sandblast handle can not spout the sand powder again. Wherein, because whole pipeline except having buckling in the seat department of converging, other all pipelines are the straight line mode of carrying, consequently can reduce the impact of sand powder to the pipeline, moreover because the seat that converges has great wall thickness, consequently the impact of sand powder in converging the seat can not exert an influence to the reliability of carrying the sand powder yet, consequently for prior art, has reduced the buckling of carrying the sand powder, has improved and has carried the reliability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a sand blasting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the blanking box of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the manifold base of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a partial cross-sectional view of FIG. 1;

FIG. 6 is an exploded view of the isolation capsule of FIG. 1;

FIG. 7 is one of the schematic views of the isolation chamber of FIG. 1;

FIG. 8 is a second schematic view of the isolation chamber of FIG. 1;

FIG. 9 is a partial cross-sectional view of the pinch valve of FIG. 1.

Icon: 10-a machine box; 12-an isolation bin; 121-a cartridge body; 1210-first port; 1212-a second port; 1214-mounting holes; 123-cover plate; 1230-through hole; 125-a holding cavity; 20-a sand powder tank; 30-a convergence seat; 32-a first side; 321-an air inlet hole; 323-air inlet plug column; 34-a top surface; 341-sand inlet hole; 36-a second side; 361-output hole; 363-output patch columns; 365-a boss; 3650-a fourth card slot; 3652-fourth seal ring; 40-feeding a sand straight pipe; 42-a third seal ring; 50-a pinch valve; 52-a valve body; 521-a first mating hole; 523-second mating hole; 525-first abutment surface; 527-clamping hole; 529-through holes; 54-a piston rod; 541-a piston portion; 543-abutting part; 545-a second holding surface; 56-clamping rod; 58-an elastic member; 59-a first seal ring; 60-soft straight pipe; 62-a first fastening clip; 64-a second fastening clip; 70-output straight pipe; 72-a second seal ring; 80-an air inlet pipe; 82-one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 to 4, an embodiment of the present invention provides a sandblasting dental scaler, which includes a sandblasting handle and a sandblasting apparatus, wherein the sandblasting apparatus includes a sand powder tank 20, a converging seat 30, a sand inlet straight pipe 40, a soft straight pipe 60, and an output straight pipe 70, and the sand powder tank 20 is used for storing sand powder. The merging base 30 has an air inlet hole 321, a sand inlet hole 341 and an output hole 361 which are communicated with each other, and the air inlet hole 321 is used for connecting an air source, and specifically, the air source can be connected through an air inlet pipe 80. The head end of the sand inlet straight pipe 40 is connected to the sand powder tank 20, and the tail end is connected to the sand inlet 341. Pinch valve 50 is disposed corresponding to output port 361. The hose 60 is made of an elastic material and has a tip end connected to the output hole 361. The head end of the output straight pipe 70 is connected to the tail end of the flexible straight pipe 60, and the tail end corresponds to a tail line connector of the sand blasting handle arranged on the case 10, so that the tail end of the output straight pipe 70 is used for connecting the sand blasting handle. Wherein, the flexible straight pipe 60 can be cut off or conducted under the action of external force.

By adopting the sand blasting device, if sand blasting treatment is needed, the soft straight pipe 60 can be conducted, gas in a gas source enters the converging seat 30 through the gas inlet hole 321, sand powder in the sand powder tank 20 enters the converging seat 30 through the sand inlet straight pipe 40 and the sand inlet hole 341 to converge with the gas, so that the gas carries the sand powder to sequentially pass through the soft straight pipe 60 and the output straight pipe 70 from the output hole 361 and then leads to the sand blasting handle, when the sand blasting treatment is needed to be interrupted or stopped, the soft straight pipe 60 can be stopped, the gas carrying the sand powder is stopped, and the sand blasting handle cannot eject the sand powder. Wherein, because whole pipeline except converging seat 30 department and having the bending, other all pipelines are the straight line transport mode, consequently can reduce the impact of sand powder to the pipeline, and owing to converge seat 30 has great wall thickness, consequently the impact of sand powder in converging seat 30 can not exert an influence to the reliability of carrying the sand powder yet, consequently for prior art, has reduced the bending of carrying the sand powder, has improved and has carried the reliability.

In order to ensure the smoothness of the air flow and further improve the conveying reliability, the axes of the air inlet holes 321, the axes of the sand inlet holes 341 and the axes of the output holes 361 are all in the same plane. In addition, in order to prevent the sand powder in the confluent seat 30 from entering the air source through the air inlet pipe 80, the air inlet pipe 80 is provided with a check valve 82, and the check valve 82 is only used for communicating the fluid from the air source to the air inlet hole 321.

It should be noted that at least one of the sand inlet straight pipe 40 and the sand outlet straight pipe 70 is made of a hard material, such as a metal material, so that the sand inlet straight pipe and the sand outlet straight pipe have better sealing performance and corrosion resistance, so as to ensure that the inside of the housing 10 does not have the situations of pipeline damage and sand powder leakage.

In this embodiment, the sandblasting apparatus further includes a case 10 and a pinch valve 50, the case 10 mainly plays a role of bearing, and is hollow, the sanding tank 20 is mounted on the top wall of the case 10 and located outside the case 10, that is, the sandblasting pipe is mounted on the outside of the top wall of the case 10, and the converging seat 30, the straight sanding inlet pipe 40, the pinch valve 50, the straight hose 60, and the straight output pipe 70 are located inside the case 10.

The air supply can be the air pump that sets up in machine box 10 inside, the interior outer space of machine box 10 is linked together, from this at air pump during operation, can carry to inlet port 321 after the air pressurization in the machine box 10, the inlet port 321 that converges seat 30 then can be connected with the air supply through intake pipe 80, the material of intake pipe 80 can be elastic material, thereby can buckle or prop straight in machine box 10 inside according to actual layout needs, in order to guarantee the compactness that each spare part arranged in machine box 10, and because there is not the sand powder to exist between the inlet port 321 that converges seat 30 and the air supply, consequently intake pipe 80 can buckle, can not cause the influence to the reliability of carrying the sand powder. Of course, the air inlet 321 and the air source may be connected by a straight pipe or an elbow pipe made of metal.

With reference to fig. 5, in the present embodiment, an isolation chamber 12 is disposed inside the casing 10, specifically, the isolation chamber 12 is disposed inside a bottom wall of the casing 10, the isolation chamber 12 is provided with a first port 1210, an accommodating chamber 125 and a second port 1212 which are sequentially connected, a pinch valve 50 is hermetically inserted into a peripheral wall of the isolation chamber 12 to partially extend into the accommodating chamber 125, a portion of the pinch valve 50 located outside the accommodating chamber 125 is fixed to the bottom wall of the casing 10, the flexible straight pipe 60 is completely located in the accommodating chamber 125, a head end and a tail end of the flexible straight pipe 60 respectively correspond to the first port 1210 and the second port 1212, a middle portion of the flexible straight pipe 60 is inserted into the pinch valve 50, the pinch valve 50 can clamp or release the flexible straight pipe 60 to enable the flexible straight pipe 60 to be connected or connected, the base 30 is fixed to the bottom wall of the casing 10 and is hermetically fitted to the first port 1210, an output hole 361 is disposed on a surface of the converging base 30 facing the accommodating chamber 125, and a head end of the output straight pipe 70 is hermetically fitted to the second port 1212 and extends into the accommodating chamber 125.

Through the arrangement of the isolation bin 12, if the soft straight pipe 60 is repeatedly clamped by the pinch valve 50 for a long time and is damaged by cracks after being loosened, the gas leakage and the powder leakage are caused, and the converging seat 30, the pinch valve 50 and the output straight pipe are all sealed with the isolation bin 12, so that the leaked sand powder can be retained in the accommodating cavity 125 due to the independently arranged isolation bin 12 and cannot enter the region, except the isolation bin 12, in the machine box 10, the leaked sand powder is prevented from contacting other components in the machine box 10, the damage of the components is avoided, and the whole service life of the equipment is prolonged.

With reference to fig. 6 to 8, optionally, a window is disposed on a bottom wall of the casing 10, the isolation bin 12 includes a bin body 121 and a cover plate 123, a bottom of the bin body 121 is open to communicate with the window, the cover plate 123 is detachably connected to the window to form an accommodating cavity 125 together with the bin body 121, two opposite side walls of the bin body 121 are respectively provided with a first port 1210 and a second port 1212, and the pinch valve 50 is hermetically inserted into the bin body 121. Therefore, if the flexible straight pipe 60 is cracked, air and powder are released, the amount of the sand powder sprayed by the sand blasting handle is reduced, so that an operator can directly detach the cover plate 123, the flexible straight pipe 60 can be conveniently replaced, and the maintenance time and the maintenance cost are saved. Moreover, since the first port 1210 and the second port 1212 are disposed opposite to each other, the two ends of the hose 60 are connected to the output hole 361 and the output straight tube in a straight line.

The shape of the bin body 121 is not specifically limited, and only the accommodating cavity 125 capable of being used for arranging the pinch valve 50 and the hose 60 needs to be arranged, and the accommodating cavity can be square, rectangular and the like without a cover, or can be a cylindrical box body and the like without a cover, and correspondingly, the shape of the cover plate 123 is not specifically limited, and only the accommodating cavity is matched with the shape of the window.

In addition, the cover plate 123 is provided with a plurality of through holes 1230 arranged at intervals, so that when the air and powder leakage occurs to the flexible straight pipe 60, the leaked sand powder can be discharged through the through holes 1230, and the sand powder is prevented from accumulating in the accommodating cavity 125 to affect the normal operation of the pinch valve 50. In addition, because the sand powder is discharged from the through hole 1230, the operator can directly observe the sand powder discharged from the through hole 1230, so that the operator can know that the soft straight pipe 60 is cracked, damaged and leaked, and the operator can timely perform related operations such as maintenance and replacement.

Of course, it should be noted that, in some embodiments, the isolation chamber 12 may be a closed hollow structure separately built inside the casing 10.

Referring to fig. 9, in the present embodiment, the pinch valve 50 includes a valve body 52, a piston rod 54, and a clamping rod 56, the piston rod 54 is disposed in the valve body 52, the clamping rod 56 is disposed through the valve body 52 along a direction forming an included angle with an axial direction of the valve body 52, and specifically, the clamping rod 56 may be disposed through the valve body 52 along a direction perpendicular to the axial direction of the valve body 52. The flexible straight tube 60 is disposed through the valve body 52, and a portion of the flexible straight tube 60 located inside the valve body 52 is located between the piston rod 54 and the clamping rod 56. Wherein, the piston rod 54 can move towards the direction close to or far away from the clamping rod 56 to clamp or unclamp the flexible straight pipe 60, thereby realizing the cut-off or conduction of the flexible straight pipe 60.

Specifically, the valve body 52 is cylindrical, the inner hole of the valve body includes a first matching hole 521 and a second hole section which are coaxially communicated, the diameter of the first matching hole 521 is larger than that of the second matching hole 523, and an annular first abutting surface 525 is formed between the first matching hole 521 and the second matching hole 523. The valve body 52 is provided with a clamping hole 527 at a position corresponding to the second mating hole 523, the clamping hole 527 penetrates through the second mating hole 523, and the axis of the clamping hole 527 intersects with and is perpendicular to the axis of the second mating hole 523. The lock rod 56 is inserted through the lock hole 527 and fixed to the valve body 52.

The piston rod 54 comprises a piston and a butt rod portion 543 which are coaxially connected, the diameter of the piston portion 541 is larger than that of the butt rod portion 543, an annular second butt surface 545 is formed between the piston portion 541 and the butt rod portion 543, the piston portion 541 is located in the first fitting hole 521, and the outer peripheral surface of the piston portion 541 is in sliding sealing fit with the inner peripheral surface of the first fitting hole 521; one part of the abutting rod part 543 is located in the first matching hole 521, the other part of the abutting rod part 543 is located in the second matching hole 523, and the outer circumferential surface of the abutting rod part 543 is in sliding sealing fit with the inner circumferential surface of the second matching hole 523. Therefore, when the piston portion 541 is pressed to drive the abutting rod portion 543 to move towards the clamping rod 56, the abutting rod portion 543 and the clamping rod 56 can clamp the soft straight tube 60, so that the soft straight tube 60 is extruded and deformed to be stopped, and when the piston portion 541 drives the abutting rod portion 543 to be far away from the clamping rod 56, the abutting rod portion 543 and the clamping rod 56 can release the soft straight tube 60, so that the soft straight tube 60 is reset under the elastic property of itself and is conducted again.

The valve body 52 is further provided with a through hole 529 for passing the flexible straight tube 60, the through hole 529 is located on the valve body 52 corresponding to a position between the abutting rod portion 543 and the clamping rod 56, and penetrates through the second matching hole 523, an axis of the through hole 529 intersects with an axis of the second matching hole 523 and is perpendicular to the axis, so that the portion of the flexible straight tube 60 passing through the channel is located between the abutting rod portion 543 and the clamping rod 56.

The pinch valve 50 further comprises an elastic member 58, the elastic member 58 abuts between the first abutting surface 525 and the second abutting surface 545, so that the elastic member 58 compresses and presses the flexible straight pipe 60 after the piston rod 54 is pressed, the sand powder in the flexible straight pipe 60 is stopped, when the sand blasting is required to be continued, the pressure on the piston rod 54 is contacted, the piston rod 54 can move towards the direction away from the clamping rod 56 under the effect of the resilience force of the elastic member 58, the flexible straight pipe 60 is conducted, and the sand blasting handle can continue sand blasting. Specifically, the elastic member 58 may be a tubular elastic member such as a coil spring, a bellows, or the like.

With reference to fig. 1 to 9, in the present embodiment, the pinch valve 50 and the cartridge body 121 are sealed by a first sealing ring 59, specifically, the cartridge body 121 is provided with a mounting hole 1214, the pinch valve 50 is sealingly inserted in the mounting hole 1214, specifically, the valve body 52 of the pinch valve 50 is inserted in the mounting hole 1214, a circumferentially surrounding first locking groove is provided on an outer circumferential surface of the valve body 52, and the first sealing ring 59 is sleeved in the first locking groove and is pressed by an inner circumferential surface of the locking hole 527, so as to ensure the sealing connection between the pinch valve 50 and the cartridge body 121.

Between the head end of output straight tube 70 and the second mouthful 1212, it is sealed through second sealing washer 72, specifically speaking, the outer peripheral face of the head end of output straight tube 70 is equipped with the second draw-in groove that circumference encircleed, is provided with second sealing washer 72 in this second draw-in groove, from this after the head end of output straight tube 70 wears to locate second mouthful 1212, this second sealing washer 72 is extrudeed by the inner peripheral surface of second mouthful 1212 to this realizes the head end of output straight tube 70 and seals between the second mouthful 1212.

The gap between the tail end of the sand inlet straight pipe 40 and the sand inlet 341 is sealed by a third sealing ring 42, specifically, a third clamping groove surrounding in the circumferential direction is arranged on the outer circumferential surface of the tail end of the sand inlet straight pipe 40, and the third sealing ring 42 is arranged in the third clamping groove, so that after the tail end of the sand inlet straight pipe 40 is inserted into the sand inlet 341, the third sealing ring 42 is extruded by the inner circumferential surface of the sand inlet 341, and the sealing performance between the sand inlet straight pipe 40 and the sand inlet 341 is ensured.

The converging seat 30 is roughly in a square shape, and comprises a first side surface 32, a top surface 34 and a second side surface 36 which are connected in sequence at an included angle, wherein the first side surface 32 is opposite to the second side surface 36, the first side surface 32 is provided with an air inlet hole 321, the top surface 34 is provided with a sand inlet hole 341, and the second side surface 36 is provided with an output hole 361, so that the second side surface 36 is the surface of the converging seat 30 facing the installation cavity, and three surfaces connected in sequence at the included angle are formed, so that the air inlet pipe, the sand inlet straight pipe 40 and the soft straight pipe 60 are respectively positioned at different directions of the converging seat 30, the layout is more reasonable in dispersion, and the reliability of sand powder conveying is further improved. Of course, the converging seat 30 also has a bottom surface opposite to the top surface 34 and connected with the first side surface 32 and the second side surface 36 at an included angle, and the bottom surface of the converging seat 30 is attached to the inner side of the bottom wall of the casing 10, so that the converging seat 30 is mainly supported by the bottom wall of the casing 10, and the load of the first port 1210 is reduced, thereby ensuring the connection reliability between the converging seat 30 and the first port 1210.

The junction seat 30 and the first port 1210 may be sealed by a fourth sealing ring 3652, specifically, the second side surface 36 is formed with a boss 365, an outer circumferential surface of the boss 365 is provided with a circumferentially surrounding fourth clamping groove 3650, and the fourth sealing ring 3652 is disposed in the fourth clamping groove 3650, so that after the boss 365 is fitted to the first port 1210, an inner circumferential surface of the first port 1210 presses the fourth sealing ring 3652, thereby ensuring sealing performance.

The first side surface 32 is provided with an air inlet insertion column 323, the air inlet hole 321 penetrates through the air inlet insertion column 323, the head end of the air inlet pipe 80 is used for connecting an air source, and the tail end of the air inlet pipe 80 is tightly sleeved outside the air inlet insertion column 323. The outer circumferential surface of the air inlet insertion column 323 can be made into a shape of concave-convex undulation in the axial direction, so that the connection tightness between the air inlet pipe 80 and the air inlet insertion column 323 is improved.

The second side surface 36 is provided with an output plug-in column 363, the output hole 361 penetrates through the output plug-in column 363, specifically, the end surface of the boss 365 is provided with the output plug-in column 363, the output hole 361 further penetrates through the boss 365, the output plug-in column 363 extends into the accommodating cavity 125, the head end of the soft straight pipe 60 is tightly sleeved outside the output plug-in column 363, and the tail end of the soft straight pipe 70 is tightly sleeved outside the head end of the output straight pipe 70. Thereby the flexible straight pipe 60 is respectively closely connected with the head end of the output straight pipe 70 of the output hole 361, so as to ensure the sealing performance and avoid the sand powder from leaking from the connection.

The sand blasting device further comprises a first fastening clamp 62 and a second fastening clamp 64, the first fastening clamp 62 is sleeved outside the head end of the flexible straight pipe 60 to enable the head end of the flexible straight pipe 60 to be tightly attached to the output insertion column 363, the second fastening clamp 64 is sleeved outside the tail end of the flexible straight pipe 60 to enable the tail end of the flexible straight pipe 60 to be tightly attached to the head end of the output straight pipe 70, and the connection and sealing reliability is improved.

Certainly, the outer peripheral surface of the output patch column 363 can also be made into a concave-convex shape in the axial direction, so that the connection tightness between the flexible straight pipe 60 and the output patch column 363 is improved; the outer peripheral surface of the portion of the output straight tube 70 extending into the housing chamber 125 may also be made to have a concave-convex shape in the axial direction, thereby improving the reliability of connection and sealing.

To sum up, the utility model discloses sand blasting unit and sandblast dental scaler buckle less, and the reliability that sand powder was carried is better.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (10)

1. A blasting apparatus, comprising:

the sand powder tank is used for storing sand powder;

the converging seat is provided with an air inlet hole, a sand inlet hole and an output hole which are communicated with each other, and the air inlet hole is used for being connected with an air source;

the head end of the sand inlet straight pipe is connected with the sand powder tank, and the tail end of the sand inlet straight pipe is connected with the sand inlet;

the head end of the flexible straight pipe is connected with the output hole, wherein the flexible straight pipe can be cut off or conducted under the action of external force;

and the head end of the output straight pipe is connected to the tail end of the soft straight pipe, and the tail end of the output straight pipe is used for being connected with a sand blasting handle.

2. The blasting apparatus as claimed in claim 1, wherein the seat comprises a first side surface, a top surface and a second side surface which are sequentially connected at an included angle, the first side surface and the second side surface are opposite, the first side surface is provided with the air inlet, the top surface is provided with the sand inlet, and the second side surface is provided with the output hole.

3. The blasting apparatus of claim 2, wherein the second side has an output post, the output hole passes through the output post, the head end of the straight hose is tightly sleeved outside the output post, and the tail end of the straight hose is tightly sleeved outside the head end of the straight hose.

4. The sand blasting device as claimed in claim 3, further comprising a first fastening clip and a second fastening clip, wherein the first fastening clip is sleeved outside the head end of the flexible straight pipe to enable the head end of the flexible straight pipe to be closely attached to the output insertion column, and the second fastening clip is sleeved outside the tail end of the flexible straight pipe to enable the tail end of the flexible straight pipe to be closely attached to the head end of the output straight pipe.

5. The sand blasting device of claim 2, further comprising an air inlet pipe, wherein the first side surface is provided with an air inlet insertion column, the air inlet hole penetrates through the air inlet insertion column, the head end of the air inlet pipe is used for connecting an air source, and the tail end of the air inlet pipe is tightly sleeved outside the air inlet insertion column.

6. Blasting apparatus as claimed in claim 5, wherein the air inlet conduit is provided with a one-way valve for directing fluid only from the air supply to the air inlet conduit.

7. The sand blasting device according to claim 1, further comprising a machine box and a pinch valve, wherein the sand powder tank is mounted on the outer side of the top wall of the machine box, an isolation bin is arranged on the inner side of the bottom wall of the machine box, the isolation bin is provided with a first port, an accommodating cavity and a second port which are sequentially communicated, the pinch valve is hermetically arranged on the peripheral wall of the isolation bin in a penetrating manner so as to partially extend into the accommodating cavity, the soft straight pipe is completely positioned in the accommodating cavity, the head end and the tail end of the soft straight pipe respectively correspond to the first port and the second port, the pinch valve is penetratingly arranged in the middle of the soft straight pipe, the pinch valve can clamp or loosen the soft straight pipe so as to cut off or conduct the soft straight pipe, the converging seat is hermetically matched with the first port, the surface of the converging seat facing the accommodating cavity is provided with the output hole, and the head end of the output straight pipe is hermetically matched with the second port.

8. The sand blasting device as claimed in claim 7, wherein a window is formed in the bottom wall of the box, the isolation bin comprises a bin body and a cover plate, the bottom of the bin body is open to communicate with the window, the cover plate is detachably connected to the window to define the accommodating cavity together with the bin body, the bin body is respectively provided with the first port and the second port which are opposite, and the pinch valve is arranged in the bin body in a sealing manner.

9. The blasting apparatus as claimed in claim 1, wherein the axes of the air inlet, the sand inlet and the output are all in the same plane;

and/or the presence of a gas in the atmosphere,

at least one of the sand inlet straight pipe and the output straight pipe is made of hard materials.

10. A blasting scaler comprising a blasting handle and a blasting unit as defined in any one of claims 1 to 9.

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