CN210904470U

CN210904470U - Pressure-driven type backflow-preventing microporous atomization device

Info

Publication number: CN210904470U
Application number: CN201921187020.9U
Authority: CN
Inventors: 马利军; 高胜浩; 程剑剑; 忽新刚; 刘红梅; 王海播
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-07-03
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to a pressure-driven type backflow-preventing micropore atomization device, which comprises an upper joint, an upper connecting pipe, a check valve, a hinged ball, an upper end cover, an atomization chamber, a lower end cover, an air inlet joint, an air inlet pipe and a balancing weight, wherein the upper joint is a T-shaped three-way joint and comprises two horizontally communicated interfaces and a vertical interface, the two horizontally communicated interfaces of the upper joint are respectively connected with a respirator and an artificial air passage through pipelines, the vertical interface of the upper joint is communicated with the upper connecting pipe, the upper end of the upper connecting pipe is connected with the vertical interface of the upper joint, the lower end of the upper connecting pipe is connected with the hinged ball, the check valve is arranged in the upper connecting pipe and can prevent condensed water, cough secretion and the like in the air passage of a patient from flowing backwards, the probability of infection can be effectively reduced, the ball hinged structure is mutually matched with the balancing weight, thereby ensuring, the atomized liquid medicine is ensured to be always at the lowest position of the atomizer, the liquid medicine residue is reduced, and the atomization effect is ensured.

Description

Pressure-driven type backflow-preventing microporous atomization device

The technical field is as follows:

the utility model belongs to the technical field of medical auxiliary instrument, concretely relates to pressure drive formula that uses during supplementary patient's aerosol treatment of breathing machine prevents flowing backward micropore atomizing device.

Background art:

at present, in clinical, especially in intensive care units, occasions for assisting patients in breathing by using a breathing machine are more and more, and besides assisted breathing, the breathing machine can also be used for atomization treatment of medicaments. Besides intravenous administration, many specific pulmonary infections need to be treated by local aerosol inhalation, which has a good expectorant and expectorant effect.

At present, when carrying out the aerosol treatment to the breathing machine patient clinically, set up T type three way connection usually, two of T type three way connection's level intercommunication connect one through the tube coupling breathing machine, another passes through artificial air flue of tube coupling or face guard, form the loop of breathing in, another articulate atomizer of T type three way connection, inject the atomized medicine back in the atomizer, utilize pressure gas atomized medicine, the medicine after the atomizing gets into the loop of breathing in, utilize the efflux principle, oxygen in the loop of breathing in carries the atomized medicine and gets into patient's lung, carry out the aerosol treatment to the patient.

The aerosol treatment method has the following problems in clinical use:

(1) during the atomizing comdenstion water that produces in the pipeline, the atomizer is easily poured into to patient's air flue cough secretion etc. arouse the medicine pollution, extravagant medicine, and simultaneously, if the material that flows into in the atomizer backward can not in time be cleared up, then form the bacterial culture medium, breed the bacterium easily, increase the infection risk, the bacterium of breeding can get into patient's respiratory track along with next atomizing, arouse breathing machine correlation pneumonia (VAP) when serious, increase the time of being in hospital, increase patient's economic difficulties, increase the mortality.

(2) Generally adopt half seat during patient atomizing, but the patient of mechanical ventilation is up to the not to the requirement because of the state of an illness critical, often adopt the clinostatism, 30 degrees seats, lateral position etc, the patient position can not reach the requirement, perhaps when patient position changes, arouse the slope of atomizer easily, and the lower extreme entering of atomizer is usually followed to the pressure gas who uses when its atomizing of current atomizer, the atomizer is in case the slope, liquid medicine liquid level in the atomizer takes place the slope, cause the position liquid medicine can not fully atomize, partial liquid medicine remains in the atomizer, can not make full use of, it is extravagant to cause the liquid medicine, influence treatment simultaneously.

(3) The existing atomizer is characterized in that a pressure gas pipeline is connected with the lower end of the atomizer, pressure gas enters from the lower end of the atomizer, the pressure gas pipeline is extruded easily, pressure and flow of the gas entering the atomizer are affected, and the atomization effect is poor.

(4) When the atomization treatment is carried out on a patient, in order to improve the atomization effect, a plurality of medicines are mostly combined for atomization, but various medicines are separated from each other and cannot be mixed and atomized together, so that adverse reactions caused by reactions among the medicines are avoided. The existing atomizer needs to be disassembled when medicine is added at each time, so that the operation is complex, time and labor are wasted, and the probability of pollution of the medicine and the atomizer is increased.

(5) At present, the atomizer is commonly used in clinic, the atomized medicine particles are large, most of the atomized medicine particles sink at the position of the nose, the throat and do not enter the lung of a patient, so the atomization effect is poor, and the treatment effect cannot be achieved.

The utility model has the following contents:

to sum up, in order to overcome prior art problem not enough, the utility model provides a pressure drive formula prevents flowing backward micropore atomizing device, it sets up the check valve between T type three way connection and atomizer, thereby prevent the comdenstion water that produces in the pipeline, patient's air flue cough secretion etc. flow backward, can effectual reduction infect emergence probability, the atomizer upper end sets up rotatable ball hinge structure, set up the intensive aperture that is used for atomizing air current to pass through on ball hinge structure's the hinge ball, the atomizer lower extreme sets up the counter weight, thereby guarantee when patient position changes that the atomizer is in the vertical state all the time, guarantee that the atomizing liquid medicine is in the extreme low position of atomizer all the time, it remains to reduce the liquid medicine, thereby guarantee atomization effect, atomizing air flows through and gets into patient's suction loop after the intensive aperture on the hinge ball filters, carry out atomization therapy to the patient.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a pressure-driven backflow-preventing microporous atomizing device, wherein: the air intake device comprises an upper joint, an upper connecting pipe, a one-way valve, a hinged ball, an upper end cover, an atomizing chamber, a lower end cover, an air inlet joint, an air inlet pipe and a balancing weight, wherein the upper joint is a T-shaped three-way joint and comprises two horizontally communicated interfaces and a vertical interface, the two horizontally communicated interfaces of the upper joint are respectively connected with a respirator and an artificial air flue through pipelines, the vertical interface of the upper joint is communicated with the upper connecting pipe, the upper end of the upper connecting pipe is connected with the vertical interface of the upper joint, the lower end of the upper connecting pipe is connected with the hinged ball, the upper connecting pipe is internally provided with the one-way valve, the hinged ball comprises a ball head part and a lower connecting part which are of an integrated structure, the lower connecting part is provided with the lower end of the ball head part, the ball head part is inserted at the lower end of the upper connecting pipe and, the upper end cover is provided with an air outlet, the lower connecting part of the hinged ball is in threaded connection with the air outlet on the upper end cover, the ball head part and the lower connecting part are internally provided with a connecting through hole for communicating the upper connecting pipe with the inner cavity of the atomizing chamber, the lower end of the atomizing chamber is detachably connected with a lower end cover, the lower end cover is internally provided with a hollow seal head with a V-shaped section, the lower end of the seal head is provided with an air inlet connector, the air inlet connector is positioned in the lower end cover, the air inlet connector is connected with a pressure air source through an air inlet pipe, and the lower part of the lower end cover.

Furthermore, the lower end opening of the upper connecting pipe is a necking, the ball head part of the hinge ball is clamped in the lower end opening of the upper connecting pipe, and the inner diameter of the lower end opening of the upper connecting pipe is smaller than the diameter of the ball head part of the hinge ball.

Furthermore, blind holes are symmetrically formed in two sides of the head portion of the hinged ball, pin shafts are symmetrically arranged in the lower end opening of the upper connecting pipe, the pin shafts correspond to the blind holes and are inserted into the blind holes, and the hinged ball rotates relative to the upper connecting pipe by taking the pin shafts as rotating shafts.

Furthermore, the connecting through holes in the ball head part and the lower connecting part are a plurality of densely arranged small holes, and the aperture of the densely arranged small holes is 2-5 micrometers.

Further, the aperture of the connecting through hole in the bulb part and the lower connecting part is smaller than the inner diameter of the air outlet hole on the upper end cover, the inner wall of the upper part of the atomizing chamber is provided with an upper supporting block, the upper supporting block supports the lower end of the filter plate, the filter plate is pressed on the upper supporting block through the upper end cover, and the diameter of the filtering hole on the filter plate is 2-5 microns.

Further, the inner wall of the lower end cover is provided with a lower supporting block, the lower supporting block supports the seal head, the seal head is pressed on the lower supporting block through the atomizing chamber, and a lower sealing ring is arranged between the seal head and the inner wall of the lower end cover.

Further, pipe supports are arranged on the outer wall of the atomizing chamber and the outer wall of the lower end cover, through holes are formed in the side wall of the lower end cover, one end of the air inlet pipe penetrates through the through holes to be communicated with an air inlet connector located in the lower end cover, the other end of the air inlet pipe is communicated with a pressure air source, and the air inlet pipe is clamped and connected with the pipe supports.

Further, the atomizing chamber is provided with a liquid inlet device, the liquid inlet device is arranged on one side of the atomizing chamber and comprises a liquid inlet pipe, a piston device, a sealing ring, a spring and a spring seat, the liquid inlet pipe comprises a large-diameter pipe body section and a small-diameter pipe opening section, one end of the pipe opening section is used for being connected with an injector, the other end of the pipe opening section is in threaded fastening connection with one end of the pipe body section, the other end of the pipe body section is connected with the atomizing chamber and communicated with an inner cavity of the atomizing chamber, the pipe body section is internally provided with the spring seat, the spring seat comprises a seat plate and a sliding column which are of an integrated structure, the seat plate is connected with the pipe body section of the liquid inlet pipe, the sliding column is arranged in the inner cavity of the piston device in a penetrating manner, the piston device is of a cylindrical structure with one end open and the other end closed, the spring is arranged between the inner bottom surface of the, the outer diameter of the piston device is larger than that of the pipe orifice section of the liquid inlet pipe, a sealing ring is arranged between the closed end of the piston device and the pipe orifice section, and a through hole is formed in the seat plate of the spring seat.

Further, the pipe body section of feed liquor pipe on be provided with the choke valve, the choke valve be close to the atomizer chamber and arrange, the choke valve and the mouth of pipe section 206 of feed liquor pipe between form the stock solution chamber.

Furthermore, an air inlet is arranged in the air inlet joint and is a conical hole with a small diameter at the upper end and a large diameter at the lower end.

The utility model has the advantages that:

1. the utility model discloses an add the check valve between T type three way connection and atomizer, thereby prevent the comdenstion water that produces in the pipeline, patient's air flue coughs secretion etc. and flow backward, can effectual reduction infect the emergence probability, the atomizer upper end sets up rotatable ball hinge structure, set up the intensive aperture that is used for atomizing air current to pass through on ball hinge structure's the hinge ball, the atomizer lower extreme sets up the counter weight, thereby guarantee that the atomizer is in the vertical state all the time when patient's position changes, guarantee that the atomizing liquid medicine is in the extreme lower position of atomizer all the time, it remains to reduce the liquid medicine, thereby guarantee atomization effect, atomizing air current gets into the patient after filtering through the intensive aperture on the hinge ball and breathes in the loop, carry out atomization therapy to.

2. The utility model discloses an articulated ball is connected with the lower extreme relative rotation of last connecting pipe to realize the relative rotation of articulated ball below part and last connecting pipe, under the effect of the balancing weight in the lower end cover of atomizer chamber, make articulated ball and following part keep the vertical state, thereby make the atomizing liquid medicine in the atomizer chamber be in the extreme lower position of atomizer chamber all the time, reduce the liquid medicine and remain, thereby guarantee atomization effect.

3. The utility model discloses a lower extreme detachable of atomizer chamber is connected with the bottom end cover, and the utility model discloses a head and air connector all are located the bottom end cover, then work the utility model discloses a when atomizer chamber is located vertical state and atomizer chamber lower extreme and sick bed or other things contact, the bottom end cover can form the protection to the intake pipe of atomizer chamber lower extreme, avoids extrudeing the intake pipe to pressure gas's pressure and flow when guaranteeing the atomizing avoids influencing the atomization quality because of the intake pipe extrusion.

4. The utility model discloses a ball head portion of articulated ball and the aperture that the connection thru hole in the lower connecting portion was arranged for a plurality of densities, the aperture of the aperture that densities were arranged is 2~5 microns, then the aperture that the atomizing medicine warp density was arranged of production in the atomizer chamber, the aperture of aperture is 2~5 microns, then the medicine granule that the granule is less than 2~5 microns can get into the patient internal and treat the patient, little medicine granule is more fine and smooth, get into patient lung along with the loop of breathing in easily, be favorable to the absorption of medicine, thereby guarantee atomization treatment. After the medicine of large granule is blockked by the filter plate, subside and fall into the inner chamber of head once more, atomized by pressure gas once more, from last connecting pipe entering patient's loop of breathing in, later get into that the patient is internal to carry out the fog inhalation to the patient.

5. The utility model discloses a setting of filter plate can filter the medicine granule after the atomizing, the granule is less than 2~5 microns medicine granule and can gets into the patient internal to be treated the patient, the medicine of big granule receives the filter plate to block the back, subsides the inner chamber that falls into the head once more, once more by pressure gas atomization, the setting up of filter plate is guaranteed to get into the internal atomizing medicine granule of patient and is enough little, little medicine granule is more exquisite, get into patient lung along with the loop of breathing in easily, be favorable to the absorption of medicine, thereby guarantee the fog treatment effect.

6. The utility model discloses an upper end cover and lower end cover of atomizer chamber upper end all adopt detachable connected mode, and the back is dismantled to the upper end cover, can clear up or the back flush to the filter plate, avoids the filter plate to block up, guarantees the atomizing quality, and the back is dismantled to the lower end cover, can clear up or wash head and atomizer chamber inner chamber to guarantee that the atomizing is clean, the pollution abatement reduces the probability that the infection takes place.

7. The utility model discloses an inlet means passes through the syringe to the intraductal injection liquid medicine of feed liquor, the thrust that utilizes the liquid medicine promotes piston ware compression spring, then the feed liquor pipe is opened, it is intraductal that the liquid medicine gets into the feed liquor smoothly, the completion is injected to the liquid medicine, under the effect of spring, the mouth of pipe section that the feed liquor pipe is sealed again to the piston ware, it is intraductal that the pollution abatement gets into the feed liquor, the setting of throttle on the feed liquor pipe, can restrict the flow that gets into the liquid medicine of atomizer chamber, the liquid medicine is with little flow gradual entering atomizer chamber, can make the medicine granule after the atomizing more tiny, the atomizing is thorough, thereby guarantee the.

8. The utility model discloses simple structure, convenient to use, cost are with low costs, and the range of application is wide, and when can effectually solve the breathing machine help patient and breathe, the effect of aerosol treatment is guaranteed to the flowing backward of pollutants such as secondary infection, comdenstion water or patient's secretion that aerosol treatment exists.

Description of the drawings:

fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a third schematic structural diagram of the present invention;

fig. 4 is a fourth structural diagram of the present invention;

fig. 5 is a schematic structural diagram of the liquid inlet device of the present invention.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

As shown in fig. 1, a pressure-driven type backflow-preventing microporous atomizing device comprises an upper joint 1, an upper connecting pipe 2, a check valve 3, a hinged ball 4, an upper end cover 5, an atomizing chamber 6, a lower end cover 7, an air inlet joint 8, an air inlet pipe 9 and a balancing weight 10, wherein the upper joint 1 is a T-shaped three-way joint and comprises two horizontally communicated joints and a vertical joint, the two horizontally communicated joints of the upper joint 1 are respectively connected with a respirator and an artificial air passage or a mask through pipelines, the vertical joint of the upper joint 1 is communicated with the upper connecting pipe 2, the upper end of the upper connecting pipe 2 is connected with the vertical joint of the upper joint 1, the lower end of the upper connecting pipe 2 is connected with the hinged ball 4, the upper connecting pipe 2 is internally provided with the check valve 3, the hinged ball 4 comprises a ball head portion 41 and a lower connecting portion 42 which are of an integral structure, and the lower connecting portion 42 is, the ball head part 41 is inserted at the lower end of the upper connecting pipe 2 and can rotate relative to the upper connecting pipe 2, the lower end opening of the upper connecting pipe 2 is a necking, the ball head part 41 of the hinge ball 4 is clamped in the lower end opening of the upper connecting pipe 2, and the inner diameter of the lower end opening of the upper connecting pipe 2 is smaller than the diameter of the ball head part 41 of the hinge ball 4. The upper end cover 5 is connected with the upper end of the atomizing chamber 6 in a threaded manner, the upper end cover 5 is provided with an air outlet, the lower connecting part 42 of the hinged ball 4 is in threaded connection with the air outlet on the upper end cover 5, the ball head part 41 and the lower connecting part 42 are internally provided with connecting through holes 11 for communicating the upper connecting pipe 2 with the inner cavity of the atomizing chamber 6, the connecting through holes 11 are a plurality of densely arranged small holes, the aperture of the densely arranged small holes is 2-5 microns, the lower end of the atomizing chamber 6 is detachably connected with a lower end cover 7, a hollow end enclosure 17 with a V-shaped section is arranged in the lower end cover 7, the inner wall of the lower end cover 7 is provided with a lower supporting block 16, the lower supporting block 16 supports an end enclosure 17, the seal head 17 is pressed on the lower supporting block 16 through the atomizing chamber 6, and a lower sealing ring 20318 is arranged between the seal head 17 and the inner wall of the lower end cover 7. The lower extreme of head 17 be provided with air inlet joint 8, air inlet joint 8 in be provided with inlet port 21, inlet port 21 be the bell mouth that the upper end diameter is little, the lower extreme diameter is big. The air inlet connector 8 is positioned in the lower end cover 7, the air inlet connector 8 is connected with a pressure air source through an air inlet pipe 9, a through hole is formed in the side wall of the lower end cover 7, one end of the air inlet pipe 9 penetrates through the through hole to be communicated with the air inlet connector 8 positioned in the lower end cover 7, the other end of the air inlet pipe 9 is communicated with the pressure air source, pipe frames 19 are arranged on the outer wall of the atomizing chamber 6 and the outer wall of the lower end cover 7, and the pipe frames 19 are connected with the air inlet pipe 9 in a clamping mode. The lower part of the lower end cover 7 is provided with a balancing weight 10.

When in use, the atomizing chamber 6 is rotated, the upper end cover 5 is opened, atomized liquid medicine is added into the atomizing chamber 6, and then the atomizing chamber 6 and the upper end cover 5 are screwed; or the lower end cover 7 is rotated to separate the seal head 17 from the atomizing chamber 6, atomized liquid medicine is added into the inner cavity of the seal head 17, then the lower end cover 7 is screwed down with the lower end of the atomizing chamber 6, the air inlet pipe 9 is connected with a pressure air source, two horizontally communicated interfaces of the upper joint 1 are respectively connected with a respirator and a mask to form a patient air suction loop, the pressure air source is started, the pressure air source provides pressure gas into the atomizing chamber 6, the pressure gas atomizes the atomized liquid medicine in the inner cavity of the seal head 17 of the atomizing chamber 6 into tiny atomized medicine particles, the pressure gas carries the tiny medicine particles to flow upwards, the tiny medicine particles enter the upper connecting pipe 2 after passing through the densely arranged small holes in the hinged ball 4 and then enter the upper joint 1 through the one-way valve 3, under the action of the jet flow principle, tiny medicine particles entering the upper connector 1 enter the patient along with the patient inspiration circuit to carry out atomization treatment on the patient.

When the atomized medicine liquid atomizes the small medicine particles, the small medicine particles are filtered when passing through the densely arranged small holes in the hinged ball 4, the medicine particles with the particles smaller than the diameter of the small holes enter the upper connecting pipe 2 through the small holes, and the medicine particles with the particles larger than the diameter of the small holes fall back into the atomizing chamber 6 after being blocked, and are atomized by the pressure gas again. The arrangement of the small holes densely distributed in the hinged ball 4 enables the particles of the medicine entering the body of the patient to be finer and smoother, which is beneficial to the absorption of the medicine, thereby ensuring the atomization treatment effect.

When patient's position changes, the face guard changes along with the change of patient's position, thereby make the angle and the position of top connection 1 change, go up connecting pipe 2 along with top connection 1 takes place angle and position change, the lower extreme of going up connecting pipe 2 takes place rotatoryly around articulated ball 4, under the effect of balancing weight 10, the atomizer chamber 6 of articulated ball 4 and articulated ball 4 below remains motionless, thereby make atomizer chamber 6 remain perpendicularly all the time, thereby make the atomizing liquid medicine in the atomizer chamber 6 be in the extreme lower position of atomizer chamber 6 all the time, it remains to reduce the liquid medicine, thereby guarantee atomization effect.

In the embodiment, after the use, the atomizing chamber 6 and the seal head 17 can be cleaned and disinfected by opening the upper end cover 5 and the lower end cover 7, so that the occurrence probability of secondary infection is reduced.

Example two

As shown in fig. 2 and 5, the first embodiment is repeated with the following differences: the atomizing chamber 6 is provided with a liquid inlet device 20, the liquid inlet device 20 is arranged on one side of the atomizing chamber 6, the liquid inlet device 20 comprises a liquid inlet pipe 201, a piston 202, a sealing ring 203, a spring 204 and a spring seat 205, the liquid inlet pipe 201 comprises a large-diameter pipe body section 207 and a small-diameter pipe mouth section 206, one end of the pipe mouth section 206 is used for being connected with an injector, the other end of the pipe mouth section 206 is in threaded fastening connection with one end of the pipe body section 207, the other end of the pipe body section 207 is connected with the atomizing chamber 6 and communicated with an inner cavity of the atomizing chamber 6, the pipe body section 207 is internally provided with the spring seat 205, the spring seat 205 comprises a seat plate and a sliding column which are of an integral structure, the seat plate is connected with the pipe body section 207 of the liquid inlet pipe 201, the sliding column is arranged in the inner cavity of the piston 202 in a penetrating manner, the piston 202 is of a cylindrical structure with one open end and the other closed end, the spring 204, the spring 204 is sleeved outside the sliding column, the outer diameter of the piston 202 is larger than the outer diameter of the pipe orifice section 206 of the liquid inlet pipe 201, a sealing ring 203 is arranged between the closed end of the piston 202 and the pipe orifice section 206, and a through hole is arranged on the seat plate of the spring seat 205. A throttle valve 208 is arranged on the pipe body section 207 of the liquid inlet pipe 201, the throttle valve 208 is arranged close to the atomizing chamber 6, and a liquid storage cavity is formed between the throttle valve 208 and the pipe orifice section 206 of the liquid inlet pipe 201.

During the use, this embodiment accessible inlet means 20 injects the atomizing liquid medicine into atomizer chamber 6, the syringe that will be equipped with the atomizing liquid medicine is connected with the mouth of pipe section 206 of feed liquor pipe 201, later operate the syringe, inject the atomizing liquid medicine in feed liquor pipe 201, under the effect of thrust, atomizing liquid medicine promotes piston 202 compression spring 204, thereby open feed liquor pipe 201, the liquid medicine gets into in feed liquor pipe 201, inject the back that finishes, take off the syringe, piston 202 resets under the effect of spring 204, mouth of pipe section 206 with feed liquor pipe 201 is sealed, atomizing liquid medicine in feed liquor pipe 201 is under throttle valve 208's effect, get into atomizer chamber 6 gradually with the mode of low discharge, later atomized by pressure gas, so, the atomizing liquid medicine of storage in atomizer chamber 6 is less, can effectual improvement atomization effect, guarantee that the liquid medicine granule after the atomizing is more exquisite.

EXAMPLE III

As shown in fig. 3 and 5, the second embodiment is repeated with the following differences: blind holes 12 are symmetrically arranged on two sides of a ball head part 41 of the hinge ball 4, pin shafts 13 are symmetrically arranged in an opening at the lower end of the upper connecting pipe 2, the pin shafts 13 correspond to the blind holes 12, the pin shafts 13 are inserted in the blind holes 12, and the hinge ball 4 rotates relative to the upper connecting pipe 2 by taking the pin shafts 13 as rotating shafts. In this embodiment, the hinge ball 4 swings around the pin 13.

Example four

As shown in fig. 4 and 5, the second embodiment is repeated with the following differences: the aperture of the connecting through hole 11 in the ball head part 41 and the lower connecting part 42 is smaller than the inner diameter of the air outlet hole on the upper end cover 5, the inner wall of the upper part of the atomizing chamber 6 is provided with an upper supporting block 14, the upper supporting block 14 supports the lower end of the filter plate 15, the filter plate 15 is pressed on the upper supporting block 14 through the upper end cover 5, and the diameter of the filtering hole on the filter plate 15 is 2-5 microns. Blind holes 12 are symmetrically arranged on two sides of a ball head part 41 of the hinge ball 4, pin shafts 13 are symmetrically arranged in an opening at the lower end of the upper connecting pipe 2, the pin shafts 13 correspond to the blind holes 12, the pin shafts 13 are inserted in the blind holes 12, and the hinge ball 4 rotates relative to the upper connecting pipe 2 by taking the pin shafts 13 as rotating shafts.

In the embodiment, only one connecting through hole 11 is needed to be arranged in the ball head part 41 and the lower connecting part 42 of the hinge ball 4, the atomized liquid medicine is filtered through the filter plate 15, the processing and manufacturing are easy, the processing and production cost is low, in addition, the upper end cover 5 can be opened through the access, the filter plate 15 is taken out for backwashing, the filter plate 15 can be effectively prevented from being blocked, and the atomization efficiency is ensured.

It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made according to the prior art are intended to be included within the scope of the claims of the present invention as long as they do not exceed the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a pressure drive formula prevents flowing backward micropore atomizing device which characterized in that: comprises an upper joint (1), an upper connecting pipe (2), a check valve (3), a hinged ball (4), an upper end cover (5), an atomizing chamber (6), a lower end cover (7), an air inlet joint (8), an air inlet pipe (9) and a balancing weight (10), wherein the upper joint (1) is a T-shaped three-way joint and comprises two horizontally communicated interfaces and a vertical interface, the two horizontally communicated interfaces of the upper joint (1) are respectively connected with a respirator and an artificial air flue through pipelines, the vertical interface of the upper joint (1) is communicated with the upper connecting pipe (2), the upper end of the upper connecting pipe (2) is connected with the vertical interface of the upper joint (1), the lower end of the upper connecting pipe (2) is connected with the hinged ball (4), the upper connecting pipe (2) is internally provided with the check valve (3), and the hinged ball (4) comprises a ball head part (41) and a lower connecting part (42) which are of an integral structure, the lower connecting part (42) is provided with the lower end of a spherical head part (41), the spherical head part (41) is inserted at the lower end of the upper connecting pipe (2) and can rotate relative to the upper connecting pipe (2), the upper end cover (5) is in threaded connection with the upper end of the atomizing chamber (6), the upper end cover (5) is provided with an air outlet, the lower connecting part (42) of the hinged ball (4) is in threaded connection with the air outlet on the upper end cover (5), the spherical head part (41) and the lower connecting part (42) are internally provided with a connecting through hole (11) for communicating the upper connecting pipe (2) with the inner cavity of the atomizing chamber (6), the lower end of the atomizing chamber (6) is detachably connected with a lower end cover (7), the lower end cover (7) is internally provided with a hollow end socket (17) with a V-shaped section, the lower end of the end socket (17) is provided with an air inlet joint (8), and the air inlet joint (8, the air inlet joint (8) is connected with a pressure air source through an air inlet pipe (9), and the lower part of the lower end cover (7) is provided with a balancing weight (10).

2. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: the lower end opening of the upper connecting pipe (2) is a necking, the ball head part (41) of the hinge ball (4) is clamped in the lower end opening of the upper connecting pipe (2), and the inner diameter of the lower end opening of the upper connecting pipe (2) is smaller than the diameter of the ball head part (41) of the hinge ball (4).

3. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: the hinge joint is characterized in that blind holes (12) are symmetrically formed in two sides of a spherical head portion (41) of the hinge joint ball (4), pin shafts (13) are symmetrically arranged in an opening at the lower end of the upper connecting pipe (2), the pin shafts (13) correspond to the blind holes (12), the pin shafts (13) are inserted into the blind holes (12), and the hinge joint ball (4) rotates relative to the upper connecting pipe (2) by taking the pin shafts (13) as a rotating shaft.

4. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 3, wherein: the connecting through holes (11) in the ball head part (41) and the lower connecting part (42) are a plurality of densely arranged small holes, and the aperture of the densely arranged small holes is 2-5 micrometers.

5. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 3, wherein: the aperture of the connection through hole (11) in bulb portion (41) and lower connecting portion (42) be less than the internal diameter of the venthole on upper end cover (5), the upper portion inner wall of atomizer chamber (6) on be provided with supporting block (14), upper supporting block (14) support the lower extreme of filter plate (15), filter plate (15) pass through upper end cover (5) pressure equipment on upper supporting block (14), filter plate (15) on the diameter of crossing the filtration pore be 2~5 microns.

6. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: the inner wall of the lower end cover (7) is provided with a lower supporting block (16), the lower supporting block (16) supports an end socket (17), the end socket (17) is pressed on the lower supporting block (16) through an atomizing chamber (6), and a lower sealing ring (18) is arranged between the end socket (17) and the inner wall of the lower end cover (7).

7. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: the atomizing chamber is characterized in that pipe supports (19) are arranged on the outer wall of the atomizing chamber (6) and the outer wall of the lower end cover (7), through holes are formed in the side wall of the lower end cover (7), one end of the air inlet pipe (9) penetrates through the through holes to be communicated with an air inlet connector (8) located in the lower end cover (7), the other end of the air inlet pipe (9) is communicated with a pressure air source, and the pipe supports (19) are clamped with the air inlet pipe (9).

8. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: the atomizing chamber (6) is provided with a liquid inlet device (20), the liquid inlet device (20) is arranged on one side of the atomizing chamber (6), the liquid inlet device (20) comprises a liquid inlet pipe (201), a piston device (202), a sealing ring (203), a spring (204) and a spring seat (205), the liquid inlet pipe (201) comprises a large-diameter pipe body section (207) and a small-diameter pipe opening section (206), one end of the pipe opening section (206) is used for being connected with an injector, the other end of the pipe opening section (206) is in threaded fastening connection with one end of the pipe body section (207), the other end of the pipe body section (207) is connected with the atomizing chamber (6) and communicated with an inner cavity of the atomizing chamber (6), the pipe body section (207) is internally provided with the spring seat (205), the spring seat (205) comprises a seat plate and a sliding column which are of an integral structure, the seat plate is connected with the pipe body section (207) of the liquid inlet pipe (201), the sliding column is arranged in an inner cavity of the piston device (202) in a penetrating mode, the piston device (202) is of a cylindrical structure, one end of the cylindrical structure is open, the other end of the cylindrical structure is closed, a spring (204) is arranged between the inner bottom surface of the piston device (202) and a seat plate, the spring (204) is sleeved outside the sliding column, the outer diameter of the piston device (202) is larger than the outer diameter of a pipe opening section (206) of the liquid inlet pipe (201), a sealing ring (203) is arranged between the closed end of the piston device (202) and the pipe opening section (206), and a through hole is formed in the seat plate of the spring seat (205).

9. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 8, wherein: the liquid inlet pipe is characterized in that a throttle valve (208) is arranged on a pipe body section (207) of the liquid inlet pipe (201), the throttle valve (208) is arranged close to the atomizing chamber (6), and a liquid storage cavity is formed between the throttle valve (208) and a pipe orifice section (206) of the liquid inlet pipe (201).

10. The pressure-driven backflow-preventing microporous atomizing device as set forth in claim 1, wherein: an air inlet hole (21) is formed in the air inlet joint (8), and the air inlet hole (21) is a conical hole with a small diameter at the upper end and a large diameter at the lower end.