Medical atomizer capable of preventing backflow of gas from polluting

Abstract

The present application relates to the technical field of liquid medicine atomizer, especially to a medical atomizer capable of preventing gas backflow pollution, comprising a compressor, a connecting pipe and a liquid storage tank, etc.; the compressor is connected with the connecting pipe; the other end of the connecting pipe is provided with a spray head; the other end of the connecting pipe is detachably connected with the liquid storage tank, and the spray head provided at the other end of the connecting pipe is located in the liquid storage tank; the present application realizes the blocking of upward flowing medicine mist by a one-way diaphragm, which is different from the prior art and avoids the waste of upward flowing medicine mist; the air in the connecting cylinder is compressed by the pressure sheet and then enters the air bag, so that the air bag expands inward, and the rubber tube gradually becomes a reverse circular table shape, so that when the above-mentioned rapid medicine mist passes through the rubber tube, the flow rate is reduced, and the above-mentioned medicine mist flow rate is prevented from being too large, so as to avoid the discomfort of the patient and affect the use effect of the patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid medicine atomizer, and particularly relates to a medical atomizer capable of preventing gas backflow pollution. BACKGROUND

[0002] The medical atomizer is a device for converting liquid medicine into small particles and delivering the particles to the respiratory tract of a patient through airflow.

[0003] During the use of the medical atomizer by the patient, since most of the patients suffer from respiratory diseases, the patient is prone to coughing or shortness of breath during the use of the medical atomizer, so that the airflow speed of the patient is increased, and the airflow in a short time is increased, so that the medicine mist appears the backflow phenomenon under the action of the patient's exhalation. The existing medical atomizer is generally provided with a gasket at the nozzle, when the medicine mist appears the backflow phenomenon, the gasket is opened by the airflow, so that the backflow medicine mist flows out from the nozzle to the outside. However, when the gasket is opened, the medicine mist sprayed from the medical atomizer also flows out from the opening position of the gasket, causing the waste of the medicine mist. Therefore, the existing medical atomizer needs to solve the above problems. SUMMARY

[0004] In order to overcome the defect that the pressure in the medical atomizer will gradually increase under the blockage of the backflow medicine mist, when the backflow medicine gradually dissipates, at that moment, the medicine mist sprayed from the medical atomizer is accelerated, and when it blows to the face of the patient, the patient feels uncomfortable, and the use of the patient is affected, the present application provides a medical atomizer capable of preventing gas backflow pollution.

[0005] The technical solution is: a medical nebulizer to prevent gas backflow contamination, including a compressor, a connecting pipe, a liquid storage tank, a sealed cover, an atomizing piece and a mask; the compressor is connected to a connecting pipe; a nozzle is provided at the other end of the connecting pipe; the other end of the connecting pipe is detachably connected to the liquid storage tank, and the nozzle provided at the other end of the connecting pipe is located in the liquid storage tank; a sealed cover is screwed on the liquid storage tank; an air outlet is provided on the sealed cover; a connecting port is provided on the sealed cover, and the air outlet is connected to the connecting port; a mask is plugged into the connecting port of the sealed cover; a liquid guide tube is provided on the sealed cover, the liquid guide tube is located in the liquid storage tank, and the liquid guide tube is connected to the air outlet; a first guide tube is provided at the lower part of the liquid guide tube, and the first guide tube is located on the outside of the connecting tube nozzle; a second guide tube is provided in the liquid guide tube, and the second guide tube is located above the first guide tube; the second guide tube An internal detachable connection is provided with an atomizing plate, which is located above the first guide tube; it also includes a one-way diaphragm, a rubber tube, an air bag and a flow limiting assembly; a hollow guide plate for guiding the backflow medicine mist is provided on the connection port of the sealed cover; a collecting chamber for collecting the backflow medicine mist is provided on the sealed cover; the collecting chamber is connected to the connection port through the hollow guide plate; a one-way diaphragm for preventing the medicine mist from flowing back into the liquid storage tank is connected inside the connection port of the sealed cover, and the upper surface of the one-way diaphragm is located at the hollow guide plate; a rubber tube for reducing the flow rate of the rising medicine mist is detachably connected inside the connection port of the sealed cover; the rubber tube is located above the one-way diaphragm; an air bag for changing the diameter of the lower side pipe mouth of the rubber tube is connected to the lower side of the rubber tube; a flow limiting assembly is provided in the sealed cover, and the flow limiting assembly is used to control the expansion of the air bag to change the diameter of the lower side pipe mouth of the rubber tube.

[0006] As a further preferred solution, the flow limiting assembly includes a connecting tube, a pressure plate, a retaining ring and an air pipe; a connecting tube is fixedly connected to and connected to the air outlet of the sealed cover; a pressure plate is slidingly connected to the connecting tube; a retaining ring is fixed to the right side of the connecting tube; the left side of the connecting tube is connected to the air pipe; and the other end of the air pipe is connected to the airbag.

[0007] As a further preferred embodiment, the invention further includes an adjustment component, which includes a rotating block, a fixed rod, a first closing piece and a second closing piece; the rotating block is rotatably connected to the upper side of the sealed cover; the fixed rod is fixedly connected to the lower side of the rotating block; the fixed rod passes through the sealed cover and is located in the liquid guide tube; the first closing piece is fixedly connected to the lower side of the fixed rod; a first connecting groove is provided on the first closing piece; a second closing piece is fixedly connected in the liquid guide tube of the sealed cover; a second connecting groove is provided on the second closing piece; the upper surface of the second closing piece is in contact with the lower surface of the first closing piece; and the second connecting groove is connected to the first connecting groove.

[0008] As a further preferred solution, a handle is provided on the liquid storage tank.

[0009] As a further preferred solution, the one-way diaphragm is arranged to be inclined toward the hollow guide plate.

[0010] As a further preferred solution, a plurality of semicircular grooves are provided on the rotating block.

[0011] As a further preferred solution, the pressure plate is arranged with its middle portion convex to the left.

[0012] As a further preferred solution, a dispersion rod is further included; the dispersion rod is fixedly connected to the connection port of the sealing cover.

[0013] As a further preferred embodiment, it also includes a hose and a ring frame; when the mask is not connected to the connection port of the sealed cover, the hose is connected to the connection port of the sealed cover; the other end of the hose is connected to the mask; and the ring frame is fixed to the lower side of the liquid storage tank.

[0014] As a further preferred solution, a bracket is further included; the bracket is fixedly connected to the left side of the compressor.

[0015] The present invention has the following advantages: the present invention realizes blocking the upward flowing medicine mist by a one-way diaphragm, which is different from the existing method and can avoid the waste of the upward flowing medicine mist;

[0016] The air in the connecting tube is compressed by the pressure plate and then enters the air bag, causing the air bag to expand inward, thereby gradually changing the rubber tube into an inverted truncated cone shape. As a result, when the rapid drug mist passes through the rubber tube, the flow rate is reduced, thus preventing the drug mist from flowing too fast, causing discomfort to the patient and affecting the patient's use effect;

[0017] The rapid drug mist is dispersed by the dispersion rod, thereby reducing the concentration of the drug mist and avoiding excessive concentration of the drug mist, which causes discomfort to the patient and affects the patient's use effect;

[0018] The medicine mist is sprayed out from the mask along the hose after passing through the connecting port, so as to avoid the situation where the liquid storage tank tilts when the patient lies on the bed, which makes it difficult to completely atomize the liquid medicine in the liquid storage tank, resulting in residual liquid medicine in the liquid storage tank and affecting the atomization of the liquid medicine by the medical nebulizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the medical atomizer for preventing gas backflow contamination according to the present invention;

[0020] Figure 2 Schematic diagram of the combined three-dimensional structure of the regulating assembly, liquid storage tank, sealing cover, one-way diaphragm and rubber tube of the present invention, wherein the liquid storage tank and sealing cover are shown in cross-section;

[0021] Figure 3 For the present invention Figure 2 A magnified view of the area A in FIG;

[0022] Figure 4 For the present invention Figure 2 A magnified view of the area B in FIG;

[0023] Figure 5 This is a front view of the current limiting component, rubber tube, and airbag assembly of the present invention;

[0024] Figure 6 This is a front view of the sealing cover, mask and hose assembly of the present invention;

[0025] Figure 7 This is a top view of the one-way diaphragm, rubber tube and dispersion rod assembly of the present invention.

[0026] Among them: 1- compressor, 2- connecting pipe, 3- liquid storage tank, 3001- handle, 4- airtight cover, 4001- air outlet, 4002- connecting port, 4003- collecting chamber, 4004- liquid guide tube, 4005- hollow guide plate, 4006- first guide tube, 4007- second guide tube, 5- atomizing piece, 6- mask, 7- one-way diaphragm, 8- rubber tube, 9- airbag, 101- rotating block, 10101- semicircular groove, 102- fixing rod, 103- first closing piece, 10301- first connecting groove, 104- second closing piece, 10401- second connecting groove, 201- connecting cylinder, 202- pressure plate, 203- retaining ring, 204- air supply pipe, 301- dispersion rod, 401- hose, 402- ring frame, 501- bracket. DETAILED DESCRIPTION

[0027] The following further illustrates the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0028] Example 1

[0029] like Figure 1-Figure 5As shown, a medical nebulizer to prevent gas backflow contamination includes a compressor 1, a connecting pipe 2, a liquid storage tank 3, a sealed cover 4, an atomizing sheet 5 and a mask 6; the compressor 1 is connected to the connecting pipe 2; the other end of the connecting pipe 2 is provided with a nozzle; the other end of the connecting pipe 2 is detachably connected to the liquid storage tank 3, and the nozzle provided at the other end of the connecting pipe 2 is located in the liquid storage tank 3; the liquid storage tank 3 is screwed with a sealed cover 4; the sealed cover 4 is provided with an air outlet 4001; the sealed cover 4 is provided with a connecting port 4002, and the air outlet 4001 is communicated with the connecting port 4002; the connecting port of the sealed cover 4 A mask 6 is plugged into 4002; a liquid guide tube 4004 is provided on the sealed cover 4, the liquid guide tube 4004 is located in the liquid storage tank 3, and the liquid guide tube 4004 is connected to the air outlet 4001; a first guide tube 4006 is provided at the lower part of the liquid guide tube 4004, and the first guide tube 4006 is located outside the nozzle of the connecting tube 2; a second guide tube 4007 is provided in the liquid guide tube 4004, and the second guide tube 4007 is located above the first guide tube 4006; an atomizer plate 5 is detachably connected to the second guide tube 4007, and the atomizer plate 5 is located above the first guide tube 4006;

[0030] It also includes a one-way diaphragm 7, a rubber tube 8, an airbag 9 and a flow limiting component; a hollow guide plate 4005 is provided on the connecting port 4002 of the sealed cover 4; a collecting chamber 4003 is opened on the sealed cover 4; the collecting chamber 4003 is connected to the connecting port 4002 through the hollow guide plate 4005; a one-way diaphragm 7 is connected to the connecting port 4002 of the sealed cover 4, and the upper surface of the one-way diaphragm 7 is located at the hollow guide plate 4005; a rubber tube 8 is detachably connected to the connecting port 4002 of the sealed cover 4; the rubber tube 8 is located above the one-way diaphragm 7; the airbag 9 is connected to the lower side of the rubber tube 8; and a flow limiting component is provided in the sealed cover 4.

[0031] The flow limiting assembly includes a connecting tube 201, a pressure plate 202, a retaining ring 203 and an air pipe 204; the connecting tube 201 is fixedly connected to and communicated with the air outlet 4001 of the sealing cover 4; the pressure plate 202 is slidingly connected to the connecting tube 201; the retaining ring 203 is fixedly connected to the right side of the connecting tube 201; the air pipe 204 is connected to the left side of the connecting tube 201; the other end of the air pipe 204 is communicated with the airbag 9.

[0032] It also includes an adjustment component, which includes a rotating block 101, a fixed rod 102, a first closing piece 103 and a second closing piece 104; the rotating block 101 is rotatably connected to the upper side of the sealed cover 4; the fixed rod 102 is fixed to the lower side of the rotating block 101; the fixed rod 102 passes through the sealed cover 4 and is located in the liquid guide tube 4004; the first closing piece 103 is fixed to the lower side of the fixed rod 102; a first connecting groove 10301 is provided on the first closing piece 103; the second closing piece 104 is fixed in the liquid guide tube 4004 of the sealed cover 4; the second closing piece 104 is provided with a second connecting groove 10401; the upper surface of the second closing piece 104 is in contact with the lower surface of the first closing piece 103; the second connecting groove 10401 is connected to the first connecting groove 10301.

[0033] The liquid storage tank 3 is provided with a handle 3001 .

[0034] First, the patient opens the airtight cover 4, pours the liquid medicine into the liquid storage tank 3, and then closes the airtight cover 4. Subsequently, the patient wears the mask 6 on his face and starts the compressor 1. The compressor 1 generates an airflow, and the airflow is transmitted along the connecting pipe 2 and then ejected from the nozzle of the connecting pipe 2. The ejected airflow will blow into the first guide pipe 4006 liquid guide pipe 4004 and flow upward, so that a low pressure area is generated on the lower side of the first guide pipe 4006 liquid guide pipe 4004, so that the liquid medicine in the liquid storage tank 3 is sucked into the first guide pipe 4006 liquid guide pipe 4004 under the action of negative pressure, and after coming into contact with the airflow, it is driven upward by the airflow. During the upward movement of the medicine liquid, the medicine liquid will collide with the atomizing sheet 5, causing the medicine liquid to be atomized into medicine mist after the collision, and then flow out from the channel between the first guide tube 4006 and the second guide tube 4007 to the liquid guide tube 4004 with the air flow, and continue to move upward along the liquid guide tube 4004 under the action of the air flow, so that the medicine mist passes through the first connecting groove 10301 and the second connecting groove 10401, and then enters the air outlet 4001, and enters the connecting port 4002 after passing through the one-way diaphragm 7, and then continues to move upward, is sprayed out from the mask 6, and enters the patient's body with the patient's breathing, thereby achieving treatment for the patient.

[0035] When a patient uses the medical nebulizer, based on the view from top to bottom, the patient can rotate the rotating block 101 clockwise, thereby driving the fixed rod 102, the first closing piece 103 and the first connecting groove 10301 to rotate clockwise, causing the first connecting groove 10301 and the second connecting groove 10401 to be misaligned, thereby reducing the amount of medicine mist passing through the first connecting groove 10301 and the second connecting groove 10401, thereby achieving the adjustment of the flow rate of medicine mist.

[0036] When the patient is breathing or exhaling rapidly, the patient's exhaled breath will blow the medicine mist back into the connecting port 4002, or even pass through the air outlet 4001 into the catheter 4004, causing reflux. Therefore, during normal use, the one-way diaphragm 7 is pushed by the upward flowing medicine mist to be in an upwardly open state. When the patient blows the medicine mist back to the connecting port 4002, the reflux medicine mist (the airflow generated by the medicine mixed with the patient's exhaled breath) pushes the one-way diaphragm 7 downward, and the reflux medicine mist is greater than the thrust of the upward flowing medicine mist on the one-way diaphragm 7. At this time, the one-way diaphragm 7 is closed, thereby blocking the reflux medicine mist through the one-way diaphragm 7. Block, avoid contamination of the medicine liquid in the medical nebulizer, affecting the sanitation and safety of the medical nebulizer, and at the same time block the upward-flowing medicine mist through the one-way diaphragm 7, which is different from the existing one, and avoids the waste of the upward-flowing medicine mist. When the one-way diaphragm 7 is affected by the reflux medicine mist and is closed, the reflux medicine mist will enter the collection chamber 4003 along the hollow guide plate 4005, and the reflux medicine will condense and accumulate into medicine liquid in the collection chamber 4003 for collection. Subsequently, when the patient finishes using the medical nebulizer, the patient pulls out the plug on the sealed cover 4, and then pours out the medicine liquid in the collection chamber 4003, thereby cleaning the medicine liquid in the collection chamber 4003.

[0037] When the one-way diaphragm 7 is closed and the one-way diaphragm 7 blocks the upward flowing drug mist, the pressure in the air outlet 4001 and the liquid guide pipe 4004 gradually increases due to the continuous generation of the upward flowing drug mist, so that when the backflowing drug mist gradually dissipates (when the backflowing drug mist enters the collecting cavity 4003), due to the gradual increase of the pressure in the air outlet 4001 and the liquid guide pipe 4004, when the backflowing drug mist is smaller than the pushing force of the upward flowing drug mist on the one-way diaphragm 7, the upward flowing drug mist will generate a rapid drug mist under the action of pressure, and the rapid drug mist will pass through the connecting port 4002 and the rubber tube 8 at a faster speed, and then be blown out to the mask 6, so that the patient feels uncomfortable when the one-way diaphragm 7 is closed due to the patient's exhalation or rapid exhalation, causing the pressure in the air outlet 4001 to increase. The pressure of the drug mist in the air outlet 4001 will push the pressure sheet 202 to move to the left, so that the air in the connecting cylinder 201 is compressed and gradually enters the air bag 9 along the gas conveying pipe 204, causing the air bag 9 to expand inward, so that the lower side of the rubber tube 8 is squeezed by the air bag 9, and the diameter of the lower port of the rubber tube 8 gradually decreases. When the diameter of the lower port of the rubber tube 8 is smaller than the diameter of the upper port, the rubber tube 8 will become a reverse circular truncated cone, so that when the above-mentioned rapid drug mist passes through the rubber tube 8, the flow rate is reduced, so that the flow rate of the above-mentioned drug mist blown into the mask 6 is reduced, avoiding that the flow rate of the above-mentioned drug mist is too large, causing the patient to feel uncomfortable, affecting the use effect of the patient. Subsequently, when the pressure in the air outlet 4001 gradually returns to the normal use state, the pressure on the right side of the pressure sheet 202 gradually decreases, the compressed air on the left side of the pressure sheet 202 pushes the pressure sheet 202 to move to the right, so that the compressed air in the air bag 9 gradually returns to the original state and moves to the initial position, and the pressure sheet 202 is blocked by the blocking ring 203 to prevent the pressure sheet 202 from coming out of the connecting cylinder 201.

[0038] During the use of the application by the patient, the handle 3001 provided on the liquid storage tank 3 facilitates the patient to hold the liquid storage tank 3.

[0039] The one-way diaphragm 7 is inclined to the hollow flow guide plate 4005; since the drug mist contacts the one-way diaphragm 7 when passing through the hollow flow guide plate 4005 into the collecting cavity 4003, part of the drug liquid will condense on the one-way diaphragm 7. By inclining the one-way diaphragm 7 to the hollow flow guide plate 4005, it is convenient for the drug liquid condensed on the one-way diaphragm 7 to flow to the hollow flow guide plate 4005 and then enter the collecting cavity 4003.

[0040] A plurality of semicircular grooves 10101 are formed on the rotating block 101; for increasing the roughness of the surface of the rotating block 101, thereby improving the friction between the patient's fingers and the rotating block 101, preventing the phenomenon of slipping.

[0041] The pressure sheet 202 is arranged with a leftward bulge in the middle; when the pressure sheet 202 is pushed to the left by the pressure in the air outlet 4001, the pressure is concentrated in the middle of the pressure sheet 202, making it easier for the pressure sheet 202 to move to the right, thereby facilitating the expansion of the airbag 9.

[0042] Example 2

[0043] On the basis of Example 1, Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown, it also includes a dispersion rod 301; the dispersion rod 301 is fixedly connected to the connection port 4002 of the sealing cover 4; when the one-way diaphragm 7 is closed and the one-way diaphragm 7 blocks the upward flowing medicine mist, the upward flowing medicine mist will produce a rapid medicine mist under the action of pressure, and the solubility of the medicine mist will also increase. Therefore, in the process of the rapid medicine mist moving upward along the rubber tube 8, the rapid medicine mist is dispersed by the dispersion rod 301, thereby reducing the concentration of the medicine mist, avoiding excessive concentration of the medicine mist, causing discomfort to the patient, and affecting the patient's use effect. At the same time, the dispersion rod 301 is also used to further reduce the flow rate of the upward flowing medicine mist.

[0044] It also includes a hose 401 and a ring frame 402; when the mask 6 is not connected to the connection port 4002 of the sealed cover 4 in Example 1, the hose 401 is connected to the connection port 4002 of the sealed cover 4; the other end of the hose 401 is connected to the mask 6; the ring frame 402 is fixedly connected to the lower side of the liquid storage tank 3; when the patient lies on the bed, the patient can place the liquid storage tank 3 vertically on the table through the ring frame 402, and then wear the mask 6 on the face, so that the medicine mist passes through the connection port 4002 and is sprayed from the mask 6 along the hose 401, so as to avoid the liquid storage tank 3 tilting when the patient lies on the bed, making it difficult to completely atomize the medicine liquid in the liquid storage tank 3, and causing residual medicine liquid in the liquid storage tank 3, affecting the atomization of the medicine liquid by the medical nebulizer.

[0045] It also includes a bracket 501; the bracket 501 is fixedly connected to the left side of the compressor 1; when the patient is busy and temporarily does not use the medical nebulizer, the patient can place the handle 3001 on the liquid storage tank 3 on the bracket 501, thereby placing the liquid storage tank 3 on the bracket 501, so as to temporarily store the liquid storage tank 3, which is convenient for the patient to reuse after returning.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medical nebulizer that prevents gas backflow contamination, characterized by: The invention comprises a compressor (1); a connecting pipe (2) is connected to the compressor (1); a nozzle is provided at the other end of the connecting pipe (2); a liquid storage tank (3) is detachably connected to the other end of the connecting pipe (2); the nozzle provided at the other end of the connecting pipe (2) is located in the liquid storage tank (3); a sealing cover (4) is screwed onto the liquid storage tank (3); an air outlet (4001) is provided on the sealing cover (4); a connecting port (4002) is provided on the sealing cover (4), and the air outlet (4001) is communicated with the connecting port (4002); the connecting port (400 2) is plugged with a mask (6); a liquid guide tube (4004) is provided on the sealing cover (4), the liquid guide tube (4004) is located in the liquid storage tank (3), and the liquid guide tube (4004) is connected to the air outlet (4001); a first guide tube (4006) is provided at the lower part of the liquid guide tube (4004), and the first guide tube (4006) is located outside the nozzle of the connecting tube (2); a second guide tube (4007) is provided in the liquid guide tube (4004), and the second guide tube (4007) is located above the first guide tube (4006); the second guide tube (4007) is detachably connected to an atomizing sheet (5), which is located above the first guide tube (4006); it also includes a one-way diaphragm (7); a hollow guide plate (4005) for guiding the backflow medicine mist is provided on the connection port (4002) of the sealed cover (4); a collecting chamber (4003) for collecting the backflow medicine mist is provided on the sealed cover (4); the collecting chamber (4003) is communicated with the connection port (4002) through the hollow guide plate (4005); a connecting port (4002) of the sealed cover (4) is connected to the inner side of the connecting port (4002) for guiding the backflow medicine mist. A one-way diaphragm (7) is provided to prevent the medicine mist from flowing back into the liquid storage tank (3), and the upper surface of the one-way diaphragm (7) is located at the hollow guide plate (4005); a rubber tube (8) for reducing the flow rate of the rising medicine mist is detachably connected to the connection port (4002) of the sealing cover (4); the rubber tube (8) is located above the one-way diaphragm (7); an air bag (9) for changing the diameter of the tube mouth of the rubber tube (8) is connected to the lower side of the rubber tube (8); a flow limiting component is provided in the sealing cover (4), and the flow limiting component is used to control the expansion of the air bag (9) to change the diameter of the tube mouth of the rubber tube (8); The flow limiting assembly includes a connecting tube (201); the connecting tube (201) is fixedly connected to and communicated with the air outlet (4001) of the sealing cover (4); a pressure plate (202) is slidably connected to the connecting tube (201); a retaining ring (203) is fixedly connected to the right side of the connecting tube (201); an air supply pipe (204) is communicated with the left side of the connecting tube (201); the other end of the air supply pipe (204) is communicated with the air bag (9); The one-way diaphragm (7) is arranged to be inclined toward the hollow guide plate (4005).

2. The medical nebulizer for preventing gas backflow contamination according to claim 1, characterized in that: The invention also includes an adjustment component, which includes a rotating block (101); the rotating block (101) is rotatably connected to the upper side of the sealing cover (4); a fixing rod (102) is fixedly connected to the lower side of the rotating block (101); the fixing rod (102) passes through the sealing cover (4) and is located in the liquid guide tube (4004); a first closing piece (103) is fixedly connected to the lower side of the fixing rod (102); a first connecting groove (10301) is provided on the first closing piece (103); a second closing piece (104) is fixedly connected to the liquid guide tube (4004) of the sealing cover (4); a second connecting groove (10401) is provided on the second closing piece (104); the upper surface of the second closing piece (104) is in contact with the lower surface of the first closing piece (103); and the second connecting groove (10401) is communicated with the first connecting groove (10301).

3. The medical nebulizer for preventing gas backflow contamination according to claim 1, characterized in that: The liquid storage tank (3) is provided with a handle (3001).

4. The medical nebulizer for preventing gas backflow contamination according to claim 2, characterized in that: A plurality of semicircular grooves (10101) are provided on the rotating block (101).

5. The medical nebulizer for preventing gas backflow contamination according to claim 1, characterized in that: The pressure plate (202) is arranged with its middle portion convex to the left.

6. The medical nebulizer for preventing gas backflow contamination according to claim 1, characterized in that: It also includes a dispersion rod (301); the dispersion rod (301) is fixedly connected to the connection port (4002) of the sealing cover (4).

7. The medical nebulizer for preventing gas backflow contamination according to claim 6, characterized in that: The device further comprises a hose (401); when the mask (6) is not connected to the connection port (4002) of the sealing cover (4), the hose (401) is connected to the connection port (4002) of the sealing cover (4); the other end of the hose (401) is connected to the mask (6); and the lower side of the liquid storage tank (3) is fixedly connected to the annular frame (402).

8. The medical nebulizer for preventing gas backflow contamination according to claim 1, characterized in that: It also includes a bracket (501); the bracket (501) is fixedly connected to the left side of the compressor (1).

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