CN102198017B - Novel anti-back-suction device for high-speed turbine handpiece - Google Patents
Novel anti-back-suction device for high-speed turbine handpiece Download PDFInfo
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- CN102198017B CN102198017B CN 201110134615 CN201110134615A CN102198017B CN 102198017 B CN102198017 B CN 102198017B CN 201110134615 CN201110134615 CN 201110134615 CN 201110134615 A CN201110134615 A CN 201110134615A CN 102198017 B CN102198017 B CN 102198017B
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- air inlet
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- muffler
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Abstract
The invention discloses a novel anti-back-suction device for a high-speed turbine handpiece. The novel anti-back-suction device comprises a machine head, wherein, the inner cavity of the machine head is equipped with a rotating wind wheel component; the side part of the machine head is equipped with an air inlet and an air return vent; the air inlet and the air return vent are respectively connected with an air inlet pipe and an air return pipe; the air return pipe is internally equipped with a control valve for plugging or opening the air return vent, and an air control pipe is arranged between the control valve and the air inlet pipe; and the air inlet pipe is internally equipped with an air inlet check valve, and the air inlet check valve is positioned between the air inlet and the air control pipe. The novel anti-back-suction device has the advantages of reasonable design, simple structure, high safety and high service efficiency. In the invention, when the handpiece stops operation, the air inlet pipe and the air return pipe prevent airflow at the same time so that cyclone in the machine head stops immediately so as to prevent the inertial response of the wind wheel component and timely cause the wind wheel component to stop rotating, thus avoiding a centrifugal fan-type air suction phenomenon and a back suction effect and achieving an ideal effect of preventing back suction.
Description
Technical field
The present invention relates to a kind of oral cavity medical apparatus, the novel non-returns of harm designed high speed turbine hand machine such as particularly a kind of cross infection for elimination high speed turbine mobile phone resorption effect and generation thereof, pathophoresis are inhaled device.
Background technology
The high speed turbine mobile phone operate as normal is that the whirlwind that utilizes air-flow in mobile phone, to form blows the wind wheel assembly, makes wind wheel assembly high speed rotating, and driving cutter changes high speed rotating with per minute 30～450,000, cutting or drilling tooth.
When the input air-flow stopped, though airless in the air inlet pipe, because inertia wind wheel assembly still is among the high speed rotating, gas and partially liq molecule in it formed the effect of centrifugal blower because centrifugal action is thrown in air inlet pipe and the muffler.Axle core position forms negative pressure, also produces negative pressure in the annular space between axle and the head, thus away from gas or liquid from this annular space, suck within the head.And an axle core position is the cutter position outside head, because negative pressure is inhaled within the head cutter and blood and slime on every side thereof, sewage, dirt etc., part gets in the muffler, and part is stayed among the mobile phone movement, and part is stayed the air intake edge.When starting once more, the part of these dirts will be blown in the mouth, and this phenomenon is claimed the resorption effect.
The blood, pollutant etc. that are drawn onto positions such as head, air inlet pipe at first produce mobile phone inside and pollute, and when reusing mobile phone cutting or drilling tooth, these pollutant, antibacterial etc. are blown in the mouth, directly produce cross infection.Even if also be difficult to thoroughly eliminate cross infection after the sterilization, moreover carry out disinfection before can not starting in using, so the resorption effect makes high speed turbine mobile phone in use be difficult to avoid cross infection, its harm is very big at every turn.Particularly current social hepatitis B, aids transmission are comparatively serious, and the harm that the resorption effect produces can not be ignored.
Because the high speed turbine mobile phone of manufacturer and the production of present most of manufacturer did not have anti-resorption measure in the past; So; At present with high speed turbine mobile phone more than 98% no non-return inhale device, high speed turbine mobile phone about 95% the no non-returns of new listing are inhaled devices, only about 5% have the high speed turbine mobile phone of non-return suction device; Also only be that a check valve is installed in air inlet pipe, it is unfavorable only having its non-return of this check valve to inhale effect.Main cause has two: first return-air mouth undamped; Wind wheel assembly inertia rotating effect still clearly; The centrifugal effect of blower fan still exists; The resorption effect exists naturally, and just only the resorption amount reduces at the air intake position, but still can have a certain amount of pollutant at positions such as wind wheel assembly and heads.It two is that the malfunctioning situation of check valve of air intake is more common, and the malfunctioning back of check valve resorption effect is bigger.
Summary of the invention
The present invention is in order to solve weak point of the prior art; Provide a kind of and can guarantee the high speed turbine mobile phone operate as normal; The harm of resorption effect and generation thereof be can thoroughly eliminate again, safe, the device of the novel non-return suction of high speed turbine mobile phone efficiently that effectively prevent resorption reached.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: the novel non-return of high speed turbine mobile phone is inhaled device, comprises head, and the inner chamber of head is provided with the wind wheel assembly of rotation; The head sidepiece is provided with air inlet and return-air mouth; Air inlet and return-air mouth are connected with air inlet pipe and muffler respectively, and being provided with in the said muffler can shutoff or open the control valve of return-air mouth, is provided with the control trachea between control valve and the air inlet pipe; Be provided with breather cheek valve in the air inlet pipe, breather cheek valve is between air inlet and control trachea.
Said control valve comprises the holder that is connected and ventilates with the muffler inwall; Holder is being provided with the valve body of external diameter less than the muffler internal diameter near return-air mouth one side; Be provided with the spool that valve body is divided into first cavity and second cavity in the valve body; The control trachea is communicated with first cavity of valve body, is provided with the compression spring that is fixedly connected on respectively on spool and the holder in second cavity, and the valve body sidepiece is provided with that second cavity is communicated with muffler freely goes out blowhole; Spool is being provided with the valve rod that penetrates valve body near return-air mouth one side, and valve rod is provided with block head closing on return-air mouth one end.
Said holder is a disc structure, and the card edge evenly is furnished with at least three passages.
Said air inlet is located at the tangential direction of cavity edge in the head.
Be to stop resorption, be dumped into air inlet pipe with muffler is started with from stoping air-flow, just when need quit work, the resistance that increase air inlet pipe and muffler gas are dumped into.Adopt technique scheme, control valve is set on return-air duct, its unlatching is by the pressed gas control that feeds in the air inlet pipe.When air inlet pipe gets into pressed gas, one-way valve opens, gas arrives muffler behind the wind wheel assembly; Meanwhile pressed gas enters in first cavity of spool through the control trachea; Promote the elastic force that spool overcomes the compression spring, the control valve in the muffler is opened, and the return-air mouth is opened; Return-air duct becomes pass-through state, the high speed turbine mobile phone operate as normal.When mobile phone need quit work, the gas in the admission line was relaxed, and the control valve on the return-air duct is because controlled pressure disappears, and it moves spool under the compression spring action round about, and the block head of valve rod cuts off return gas channel with the shutoff of return-air mouth; Simultaneously,, the wind wheel assembly is stopped operating fast, stoped the generation of resorption phenomenon because check valve effect in the air inlet pipe can not reflux the interior gas of head.
The present invention is reasonable in design, simple in structure, uses efficient, safety.When mobile phone quits work; Because air inlet pipe and muffler stop flowing of air-flow simultaneously, the whirlwind in the head stops immediately, has stoped the inertia response of wind wheel assembly; Impel the wind wheel assembly to stop operating immediately; So just can not produce the inspiratory phenomenon of centrifugal blower formula, also promptly can not produce the resorption effect, reach the ideal effect that prevents resorption.
The present invention need not to change or change high speed turbine mobile phone; Also need not to change the structure of hospital's dental unit; Can be designed and manufactured into an adapter independently, be installed between wire terminal of therapy apparatus mobile phone and the mobile phone, or directly be designed and manufactured into special (promptly comprise this non-return and inhale a device) mobile phone joint; Be installed in the seam of high speed turbine mobile phone, its volume size etc. can be designed to and high speed turbine mobile phone joint sizableness.Thereby thoroughly eliminate the harm of resorption effect and generation thereof, to preventing cross infection, great to preventing significance propagations such as hepatitis B, AIDS.
Description of drawings
Fig. 1 is the structural representation of the present invention when operate as normal is air inlet pipe and muffler aeration status;
Fig. 2 is the structural representation of the present invention when air inlet pipe stops air feed;
Fig. 3 is the side view of holder in the middle of Fig. 1 and Fig. 2.
The specific embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, the novel non-return of high speed turbine mobile phone of the present invention is inhaled device, comprises head 1; The inner chamber 2 of head 1 is provided with the wind wheel assembly 3 of rotation; Head 1 sidepiece is provided with air inlet 4 and return-air mouth 5, and air inlet 4 is located at the tangential direction at inner chamber 2 edges, and air inlet 4 is connected with air inlet pipe 6 and muffler 7 respectively with return-air mouth 5; Being provided with in the muffler 7 can shutoff or open the control valve of return-air mouth 5; Be provided with control trachea 8 between control valve and the air inlet pipe 6, be provided with breather cheek valve 9 in the air inlet pipe 6, breather cheek valve 9 is between air inlet 4 and control trachea 8.Head 1, wind wheel assembly 3 are prior art, and concrete structure repeats no more.
Control valve comprises the holder 10 that is connected and ventilates with muffler 7 inwalls; Holder 10 is being provided with the valve body 11 of external diameter less than muffler 7 internal diameters near return-air mouth 5 one sides; Be provided with the spool 14 that valve body 11 is divided into first cavity 12 and second cavity 13 in the valve body 11; Control trachea 8 is communicated with first cavity 12 of valve body 11, is provided with the compression spring 15 that is fixedly connected on respectively on spool 14 and the holder 10 in second cavity 13, and valve body 11 sidepieces are provided with that second cavity 13 is communicated with muffler 7 freely goes out blowhole 18; The setting that freely goes out blowhole 18 makes second cavity 13 be communicated with muffler 7; Be in good working order thereby guarantee to compress spring 15, spool 14 is being provided with the valve rod 16 that penetrates valve body 11 near return-air mouth 5 one sides, and valve rod 16 is provided with block head 17 closing on return-air mouth 5 one ends.Holder 10 is a disc structure, and the card edge evenly is furnished with at least three passages 19.
High speed turbine mobile phone when operate as normal air flow direction shown in arrow among Fig. 1: the inner chamber 2 → return-air mouth 5 → control valve → muffler 7 of air inlet pipe 6 → breather cheek valve 9 → air inlet 4 → head 1.The high speed turbine mobile phone operate as normal is that the whirlwind that utilizes air-flow in the inner chamber 2 of head 1, to form blows wind wheel assembly 3, makes wind wheel assembly 3 clockwise high speed rotating, and driving cutter changes high speed rotating with per minute 30～450,000, cutting or drilling tooth.
As shown in Figure 1, high speed turbine mobile phone has the admission pressure of 0.25MPa in the air inlet pipe 6 when operate as normal, and this pressed gas is washed aweather wheel assembly 3 air feed and make it high speed rotating of inner chamber 2 that breather cheek valve 9 gets into heads 1 open.Simultaneously, this pressed gas gets into first cavity 12 through control trachea 8, and the force spool 14 of pressed gas overcomes the active force of compression spring 15; Promote spool 14 and move to the direction away from return-air mouth 5 along valve body 11 inwalls, spool 14 drives valve rod 16 and moves to the direction away from return-air mouth 5 with block head 17, and return-air mouth 5 is opened; The passage 19 that air communication is crossed holder 10 gets into muffler 7; Be that control valve is opening, muffler 7 is unobstructed, and gas flow is normal; Wind wheel assembly 3 drives cutter and rotates the mobile phone operate as normal.
When turbine hand machine does not need work, produce for stoping the resorption phenomenon, as shown in Figure 2; This moment, air feed stopped, and the pressed gas in the air inlet pipe 6 disappears, and pressed gas also disappears thereupon in the control trachea 8; The elastic force of compression spring 15 moves spool 14, valve rod 16 and block head 17 to the direction near return-air mouth 5; Block head 17 is with 5 shutoff of return-air mouth, and return gas channel is closed, and promptly the control valve in the muffler 7 is closed condition.At this moment, the airflow reflux of the inner chamber 2 of the 9 prevention heads 1 of the breather cheek valve in the air inlet pipe 6 is in the middle of air inlet pipe 6.Stop air-flow flowing in the inner chamber 2 of head 1 simultaneously just because of air inlet pipe 6 and muffler 7; Whirlwind in the head 1 stops immediately, has stoped the inertia response of the centrifugal blower formula of wind wheel assembly 3, impels wind wheel assembly 3 to stop operating immediately; Therefore; Just can not produce centrifugal blower formula inspiratory phenomenon, also promptly can not produce the resorption effect, reach the ideal effect that prevents resorption.
Claims (4)
1. the novel non-return of high speed turbine mobile phone is inhaled device, comprises head, and the inner chamber of head is provided with the wind wheel assembly of rotation; The head sidepiece is provided with air inlet and return-air mouth; Air inlet and return-air mouth are connected with air inlet pipe and muffler respectively, it is characterized in that: being provided with in the said muffler can shutoff or open the control valve of return-air mouth, is provided with the control trachea between control valve and the air inlet pipe; Be provided with breather cheek valve in the air inlet pipe, breather cheek valve is between air inlet and control trachea.
2. the novel non-return of high speed turbine mobile phone according to claim 1 is inhaled device; It is characterized in that: said control valve comprises the holder that is connected and ventilates with the muffler inwall; Holder is being provided with the valve body of external diameter less than the muffler internal diameter near return-air mouth one side; Be provided with the spool that valve body is divided into first cavity and second cavity in the valve body; The control trachea is communicated with first cavity of valve body, is provided with the compression spring that is fixedly connected on respectively on spool and the holder in second cavity, and the valve body sidepiece is provided with that second cavity is communicated with muffler freely goes out blowhole; Spool is being provided with the valve rod that penetrates valve body near return-air mouth one side, and valve rod is provided with block head closing on return-air mouth one end.
3. the novel non-return of high speed turbine mobile phone according to claim 2 is inhaled device, and it is characterized in that: said holder is a disc structure, and the card edge evenly is furnished with at least three passages.
4. inhale device according to claim 1 or the novel non-return of 2 or 3 described high speed turbine mobile phones, it is characterized in that: said air inlet is located at the tangential direction of cavity edge in the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110134615 CN102198017B (en) | 2011-05-24 | 2011-05-24 | Novel anti-back-suction device for high-speed turbine handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110134615 CN102198017B (en) | 2011-05-24 | 2011-05-24 | Novel anti-back-suction device for high-speed turbine handpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102198017A CN102198017A (en) | 2011-09-28 |
| CN102198017B true CN102198017B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110134615 Expired - Fee Related CN102198017B (en) | 2011-05-24 | 2011-05-24 | Novel anti-back-suction device for high-speed turbine handpiece |
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| CN (1) | CN102198017B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783910A (en) * | 2015-04-27 | 2015-07-22 | 刘帆 | Anti-back-siphonageturbine handpiece connector of integral dental equipment |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193511B (en) * | 2015-10-28 | 2017-07-07 | 刘帆 | A kind of anti-resorption turbine hand machine joint of dental treating chair easy to process |
| CN105877855B (en) * | 2016-04-06 | 2019-01-18 | 刘帆 | The cooling anti-resorption method and device of water flow pipes in turbine hand machine connector |
| CN106580484B (en) * | 2016-12-30 | 2022-05-06 | 宁波和平鸽口腔医疗器材有限公司 | Disinfection-free pneumatic turbine head |
| CN109602505A (en) * | 2018-12-07 | 2019-04-12 | 广东精美医疗科技有限公司 | A kind of anti-suck-back device of dental handpiece |
| CN110179553B (en) * | 2018-12-18 | 2021-09-03 | 贝思德迩医疗器材(广州)有限公司 | High-speed mobile phone with 95-degree included angle between handpiece cylinder and cylinder seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2444568Y (en) * | 2000-09-12 | 2001-08-29 | 上海生大医保技术实业有限公司 | Safety dental engine handpiece |
| CN1887237A (en) * | 2006-07-25 | 2007-01-03 | 北京诺士宝牙科手机有限公司 | Back suction preventer for disposable high speed turbine dental drill hand piece |
| CN200939173Y (en) * | 2006-08-25 | 2007-08-29 | 北京万东医疗装备股份有限公司 | Sucking-back preventor for integrated dental therapeutic machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4299221A (en) * | 1979-09-28 | 1981-11-10 | Stryker Corporation | Irrigation and suction handpiece |
| US8752579B2 (en) * | 2007-05-22 | 2014-06-17 | Rjc Products Llc | Check valve for fluid injector |
-
2011
- 2011-05-24 CN CN 201110134615 patent/CN102198017B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2444568Y (en) * | 2000-09-12 | 2001-08-29 | 上海生大医保技术实业有限公司 | Safety dental engine handpiece |
| CN1887237A (en) * | 2006-07-25 | 2007-01-03 | 北京诺士宝牙科手机有限公司 | Back suction preventer for disposable high speed turbine dental drill hand piece |
| CN200939173Y (en) * | 2006-08-25 | 2007-08-29 | 北京万东医疗装备股份有限公司 | Sucking-back preventor for integrated dental therapeutic machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783910A (en) * | 2015-04-27 | 2015-07-22 | 刘帆 | Anti-back-siphonageturbine handpiece connector of integral dental equipment |
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| Publication number | Publication date |
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| CN102198017A (en) | 2011-09-28 |
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Granted publication date: 20121031 Termination date: 20140524 |