CN219963656U - Atomizing nozzle and atomizer - Google Patents
Atomizing nozzle and atomizer Download PDFInfo
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- CN219963656U CN219963656U CN202321506961.0U CN202321506961U CN219963656U CN 219963656 U CN219963656 U CN 219963656U CN 202321506961 U CN202321506961 U CN 202321506961U CN 219963656 U CN219963656 U CN 219963656U
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- 238000002347 injection Methods 0.000 claims abstract description 41
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- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
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- 239000003814 drug Substances 0.000 abstract description 58
- 238000000889 atomisation Methods 0.000 abstract description 32
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Abstract
The utility model relates to the technical field of medical consumables, and discloses an atomization nozzle and an atomization device, wherein the atomization nozzle comprises an atomization cylinder, a drainage piece and an elastic valve; the elastic valve is assembled with the spraying cylinder in a sealing way, a blocking surface is arranged on the elastic valve, a puncture slit is arranged in the elastic valve, and the elastic valve has a sealing state in a normal state and a circulation state that the puncture slit is opened when the injector is pressurized for injection; the drainage piece includes end and center post, is provided with the liquid passageway between drainage piece and the spraying barrel. The drainage piece has a drainage effect on the liquid medicament, and meanwhile, the dead space in the spraying cylinder body is reduced, and the medicament waste is reduced; the elastic valve is in a sealing state in a normal state, so that the injector can be sealed, and the tightness of liquid is ensured; meanwhile, liquid, impurities or bacteria are blocked by the elastic valve, so that the sterility of the liquid is ensured; when the atomization operation is needed, the puncture seam is opened after the elastic valve receives the liquid pressure, the elastic valve is in a circulation state, and the liquid medicament is sprayed out, so that the atomization operation is realized.
Description
Technical Field
The utility model relates to the technical field of medical consumables, in particular to an atomization nozzle and an atomization device.
Background
Clinically, the administration mode of spraying liquid to the affected part or operation site of a patient is often applied, for example, oral and nasal administration of anesthetic, spraying medicine to the eye, ear, nose, throat and other sites to treat diseases, etc., and currently, nasal spray vaccines are also being gradually popularized. The spray application mode has the advantages of not damaging the skin of a patient, reducing mental panic of the patient and simultaneously eliminating risks brought to medical care by non-sterile sharp objects such as hypodermic needles and the like.
The common spray application device usually consists of a spray head and a spray bottle/liquid storage device which are assembled in a matched mode, wherein the spray bottle often stores medicines with spray quantity of dozens of times, and the spray head can be used repeatedly in a spraying mode. Such spray devices can result in inaccurate dosing and large doses of the drug contained in the spray bottle with the risk of overdosing.
In order to solve the problems of inaccurate administration dosage and too large medicine storage quantity of a liquid spraying bottle, a syringe of a hypodermic syringe is used for replacing a liquid spraying bottle product, a syringe with proper specification can be selected according to the administration dosage, and the administration dosage is controlled through scales on the syringe. Prefilled medicine in a needle cylinder is a mature technology, and can be prefilled with liquid medicine or liquid medicine and freeze-dried powder in different chambers, and the prefilling process of the medicine is usually carried out in a pharmaceutical factory or a hospital dosing room.
The loading or storage of the medicament through the syringe presents new challenges to the spray applicator device, which is susceptible to various environments for storage, transport and handling of the medicament prior to administration to the patient, and the spray applicator device must be sealed to ensure stability and sterility of the contents.
Disclosure of Invention
The purpose of the utility model is that: providing an atomizing nozzle to ensure sterility of the atomizing device in the process of storage and transportation; the utility model also provides a spraying device using the atomization nozzle.
In order to achieve the above purpose, the utility model provides an atomization spray head, which comprises a spray cylinder, a drainage piece and an elastic valve, wherein one end of the spray cylinder is provided with an atomization nozzle, and the other end of the spray cylinder is provided with an opening for an injector to enter;
the drainage piece and the elastic valve are sequentially arranged in the spraying cylinder along the direction from the atomizing nozzle to the opening, one side, close to the opening, of the elastic valve is provided with a plugging surface which is in butt joint with an injection port of the plugging device and is used for plugging the injection port of the injector, a thorn seam is arranged in the elastic valve, and the elastic valve is provided with a sealing state in which the thorn seam is closed in a normal state and a circulation state in which the thorn seam is opened for liquid circulation due to the elastic deformation under pressure when the injector is pressurized for injection;
the drainage piece include the end and with the coaxial center post of arranging of end, the end with the elastic valve butt, the center post is located and is close to one side of atomizing spout, the drainage piece with be provided with the intercommunication between the spraying barrel the atomizing spout with the liquid passage of thorn seam.
Preferably, the thorn seam extends along the axial direction of the spraying cylinder, and a plurality of thorn seams are radially arranged on the elastic valve at intervals.
Preferably, the puncture seam is formed by puncturing with a puncture needle, the diameter of the puncture needle is defined as d, the number of the puncture seams is n, and the puncture area of the puncture seam s=pi (d/2) 2 ×n，d≥0.1mm。
Preferably, the puncture area S of the puncture seam is more than or equal to pi (0.1 mm/2) 2 ×3。
Preferably, the blocking surface is a tapered structure with an outer diameter gradually decreasing in a direction approaching the syringe, and a tip of the blocking surface is matched with a shape of an injection port of the syringe.
Preferably, the taper of the blocking surface is in the range of 105 ° -179 °.
Preferably, the outer wall of the elastic valve is in sealing fit with the inner wall of the spray cylinder.
Preferably, the outer wall of the resilient valve has an outwardly projecting annular flange which sealingly engages the inner wall of the spray cylinder.
Preferably, the end is provided with a blind hole extending into the central column, a radial gap is formed between the outer wall of the central column and the inner wall of the spray cylinder, the side wall of the central column is also provided with a side hole for communicating the blind hole with the gap, and the liquid channel comprises the blind hole, the side hole and the radial gap.
Preferably, the outer wall of the end is provided with at least one longitudinal groove extending along the axial direction of the spray cylinder, the contact surface of the end, which is abutted to the elastic valve, is provided with a transverse groove communicated with the longitudinal groove, the thorn seam is communicated with the transverse groove, a radial gap is formed between the outer wall of the central column and the inner wall of the spray cylinder, and the liquid channel comprises the longitudinal groove, the transverse groove and the radial gap.
The utility model also provides a spraying device which comprises an injector and an atomizing nozzle, wherein the atomizing nozzle is the atomizing nozzle according to any technical scheme.
Compared with the prior art, the atomizing nozzle and the atomizing device have the beneficial effects that: the drainage piece and the elastic valve are sequentially arranged in the spray cylinder body, the drainage piece has a drainage effect on the liquid medicament, meanwhile, the dead space in the spray cylinder body is reduced, the volume of the liquid medicament left in the spray cylinder body is reduced, and the medicament waste is reduced; the sealing surface on the elastic valve is abutted with the injection port of the injector to seal the injection port of the injector, the elastic valve is not subjected to liquid pressure in a normal state, the thorn seam is kept closed, the elastic valve is in a sealing state, the injector can be sealed, the leakage of injection liquid in the injector in the process of storage and transportation is prevented, and the tightness of the liquid is ensured; meanwhile, the blocking face of the elastic valve blocks the injection port of the injector, and liquid, impurities or bacteria entering from the atomizing nozzle through one side of the liquid channel are blocked by the elastic valve, so that the liquid does not contact the injection port of the injector, and the sterility of the liquid is ensured; when the atomization operation is needed, the injector injects liquid medicament into the spray cylinder body through the injection port, the elastic valve is elastically deformed after receiving the liquid pressure, the thorn seam is opened, the elastic valve is in a circulation state, and the liquid medicament is sprayed out through the thorn seam, the liquid channel and the atomization nozzle, so that the atomization operation is realized.
Drawings
FIG. 1 is a schematic view of an atomizer of the present utility model;
FIG. 2 is a cross-sectional view of the atomizer of FIG. 1 taken along line A-A;
FIG. 3 is a schematic diagram of an exploded construction of the atomizer of FIG. 1;
FIG. 4 is a cross-sectional view of the spray device of the present utility model;
fig. 5 is a schematic view of another embodiment of the flow guide of the inventive atomizer.
In the figure, 1, a spray cylinder body, 11, an atomizing nozzle, 12, an opening, 2, a drainage piece, 21, a head, 22, a central column, 23, a longitudinal groove, 24, a transverse groove, 3, an elastic valve, 31, a blocking surface, 32, a puncture seam, 33, an annular flange, 4, a liquid channel, 41, a blind hole, 42, a side hole, 43, a radial gap, 5, a syringe, 51 and an injection port.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
A preferred embodiment of the atomizer of the present utility model, as shown in fig. 1 to 3, comprises a spray cylinder 1, a flow guide 2 and an elastic valve 3, the spray cylinder 1 being like a cylinder as a whole, the flow guide 2 and the elastic valve 3 being disposed within the spray cylinder 1.
One end of the spray cylinder 1 is provided with an atomizing nozzle 11, the other end is provided with an opening 12, the atomizing nozzle 11 and the opening 12 are arranged at two axial ends of the spray cylinder 1, and the opening 12 is used for the injector 5 to enter. The atomizing nozzle 11 may adopt the existing fine holes in the background art, in this embodiment, the atomizing nozzle 11 has a specific structure that the end of the atomizing cylinder 1 has a transverse wall, the atomizing nozzle 11 is arranged on the transverse wall, a plurality of spiral bosses are arranged on the side wall of the atomizing nozzle 11, the adjacent bosses define a horizontal flow channel, an included angle is formed between the adjacent channels, so that the medicament flows through the channels and is converged to form a spiral liquid flow, a stepped liquid groove with gradually reduced cross-sectional area is formed in the wall thickness of the transverse wall, and the spiral liquid flow spirally flows to the liquid outlet in the liquid groove to suddenly release pressure to form water mist.
The flow guide 2 and the elastic valve 3 are arranged in sequence in the spray cylinder 1 in the direction from the atomizing nozzle 11 to the opening 12, i.e. the flow guide 2 is arranged on the side close to the atomizing nozzle 11 and the elastic valve 3 is arranged on the side close to the opening 12. The drainage piece 2 comprises a head 21 and a central column 22 which is coaxially arranged with the head 21, the head 21 is abutted with the elastic valve 3, the central column 22 is arranged on one side close to the atomizing nozzle 11, the end face of the central column 22 is an anvil surface and is abutted with a spiral boss on the side wall of the atomizing nozzle 11, and a flow channel is formed between the adjacent spiral bosses.
The drainage piece 2 is arranged between the elastic valve 3 and the atomizing nozzle 11, the drainage piece 2 plays a role in draining liquid medicines, the liquid medicines are conveyed to the atomizing nozzle 11 through the elastic valve 3, meanwhile, the dead volume between the elastic valve 3 in the spray cylinder 1 and the atomizing nozzle 11 can be reduced by the drainage piece 2, the drainage piece 2 occupies the inner space of the spray cylinder 1 to a large extent, and when all the liquid medicines in the injector 5 are pushed out, the residual liquid volume remained in the spray cylinder 1 is small, so that medicine waste can be reduced.
The elastic valve 3 is provided with a blocking surface 31 on a side close to the opening 12, the blocking surface 31 is used for blocking the injection port 51 of the syringe 5, and when the syringe 5 is installed into the spray cylinder 1 through the opening 12 on the side of the spray cylinder 1, the injection port 51 of the syringe 5 is abutted against the blocking surface 31, the blocking surface 31 blocks the injection port 51, the liquid medicine is prevented from flowing out through the injection port 51, and the tightness of the liquid medicine is ensured.
The elastic valve 3 is also internally provided with a puncture slit 32, the puncture slit 32 is formed after being punctured by a puncture needle, and the puncture slit 32 is used for communicating the end surfaces of the two axial ends of the elastic valve 3. The elastic valve 3 has elasticity, can recover after elastic deformation, and can shrink to seal the puncture 32 in a normal state, so that the puncture 32 is sealed, and the liquid medicament is prevented from flowing out through the puncture 32. In this embodiment, the material of the elastic valve 3 may be, but not limited to, nitrile rubber, silicone rubber, TPE, TPU, PVC, or any other suitable material that can deform under extrusion.
A liquid channel 4 is arranged between the drainage piece 2 and the spray cylinder 1, the liquid channel 4 is used for communicating the atomizing nozzle 11 and the thorn seam 32, and when the liquid medicament passes through the elastic valve 3 through the thorn seam 32, the liquid medicament can flow through the atomizing nozzle 11 through the liquid channel 4, so that atomizing operation is realized.
The elastic valve 3 has elasticity, can deform under pressure, and can recover the elastic deformation after the compression is finished. In a normal state, the injector 5 is inserted into the spray cylinder 1 through the opening 12 and the injection port 51 is abutted against the sealing surface 31, if the liquid medicine in the injector 5 is not pressurized by the outside, the elastic valve 3 is not pressurized, the puncture 32 is not deformed and spread, the liquid medicine does not pass through the puncture 32, and the elastic valve 3 is in a sealed state.
When the injector 5 is pressurized for injection, the liquid medicament in the injector 5 is pressurized and flows out through the injection port 51, the liquid medicament is firstly applied to the space between the elastic valve 3 and the injector 5, the liquid medicament applies pressure to the elastic valve 3, the elastic valve 3 is elastically deformed after being subjected to the liquid pressure, the thorn seam 32 is opened by the liquid medicament, the liquid medicament can pass through the thorn seam 32 and flow through the liquid channel 4 between the drainage piece 2 and the spray cylinder 1, and spraying can be realized, and at the moment, the elastic valve 3 is in a circulation state. After the liquid pressure is removed, the elastic valve 3 is restored to a state before deformation, and the liquid medicament at the other side of the flow channel elastic valve 3 cannot flow back again through the thorn seam 32, namely the elastic valve 3 forms a one-way valve body, so that the tightness of the whole device is ensured, and the liquid medicament is prevented from being polluted by miscellaneous bacteria.
The atomization nozzle further comprises a cap (not shown in the figure), the cap is integrally cylindrical, the cap is sleeved at one end of the atomization nozzle, which is provided with the atomization nozzle 11, of the atomization nozzle, namely, one end of the spray cylinder 1, which is provided with the atomization nozzle 11, extends into the cap, and the cap plays a certain protection role. The cap is detachably connected with the spray cylinder body 1, and can be taken off from the spray cylinder body 1 when atomization operation is carried out after assembly.
According to the atomizing nozzle, the drainage piece 2 and the elastic valve 3 are sequentially arranged in the atomizing barrel 1, the drainage piece 2 has a drainage effect on liquid medicines, meanwhile, the dead space in the atomizing barrel 1 is reduced, the volume of the liquid medicines left in the atomizing barrel 1 is reduced, and the medicine waste is reduced; after the blocking surface 31 on the elastic valve 3 is abutted against the injection port 51 of the injector 5, the injection port 51 of the injector 5 is blocked, the elastic valve 3 is not subjected to liquid pressure in a normal state, the thorn seam 32 is kept closed, the elastic valve 3 is in a sealing state, the injector 5 can be sealed, the leakage of injection liquid in the injector 5 in the storage and transportation processes is prevented, and the tightness of the liquid is ensured; meanwhile, the sealing surface 31 of the elastic valve 3 seals the injection port 51 of the injector 5, and liquid, impurities or bacteria substances entering from the atomizing nozzle 11 through one side of the liquid channel 4 are blocked by the elastic valve 3 and do not contact the injection port 51 of the injector 5, so that the sterility of the liquid is ensured; when the atomization operation is needed, the injector 5 injects the liquid medicament into the spray cylinder 1 through the injection port 51, the elastic valve 3 elastically deforms after receiving the liquid pressure, the puncture 32 is opened, the elastic valve 3 is in a circulation state, and the liquid medicament is sprayed out through the puncture 32, the liquid channel 4 and the atomization nozzle 11, so that the atomization operation is realized.
Preferably, the puncture 32 extends in the axial direction of the spray cylinder 1, and a plurality of puncture 32 are arranged on the elastic valve 3 at radial intervals.
The thorn seam 32 extends along the axial direction, and the elastic valve 3 expands outwards after being subjected to pressure deformation, so that the thorn seam 32 can be better spread. The number of the thorn slits 32 is plural, and the thorn slits 32 are radially arranged at intervals, so that the penetrating efficiency of the liquid medicament can be increased, and the pressurizing resistance of a patient can be reduced. In the present embodiment, the puncture 32 is arranged at the center of the elastic valve 3, so that the liquid medicine can pass smoothly, and the structural stability of the elastic valve 3 as a whole is ensured.
Preferably, the puncture slits 32 are formed by puncturing with a puncture needle, the diameter of the puncture needle is defined as d, the number of the puncture slits 32 is n, and the puncture area s=pi (d/2) of the puncture slits 32 2 ×n，d≥0.1mm。
The puncture needle is adopted to puncture to form the puncture seam 32, and the puncture needle is of a standard structure, so that the formation mode of the puncture seam 32 is simplified. The puncture needle is usually a solid needle, the diameter of the puncture needle is greater than or equal to 0.1mm, the diameter and the number of the puncture slits 32 can be ensured, and the puncture slits 32 can be used for the liquid medicament to pass through after the elastic valve 3 is opened. The larger the diameter of the puncture needle, the fewer the number of puncture slits 32, with the same puncture area; the smaller the diameter of the needle, the greater the number of slits 32.
Preferably, the puncture area S of the puncture slit 32 is greater than or equal to pi (0.1 mm/2) 2 ×3。
Under the condition that other structures of the atomizing nozzle are the same, the larger the puncture area is, the smaller the thrust required to be applied by an operator is when the atomizing nozzle is used; the smaller the penetration area, the greater the thrust that the operator needs to apply when in use. In this embodiment, the puncture area has a minimum value, and the thrust force applied during use can be reduced.
Preferably, the blocking surface 31 has a tapered configuration in which the outer diameter gradually decreases in a direction approaching the syringe 5, and the tip of the blocking surface 31 is matched with the shape of the injection port 51 of the syringe 5.
The sealing surface 31 has a tapered structure, and is matched with the shape of the tapered tip and the injection port 51 of the syringe 5, so that the injection port 51 of the syringe 5 can be sealed when the elastic valve 3 is in a natural state, and the sealing performance for liquid can be improved.
Preferably, the taper of the sealing face 31 is in the range 105 ° -179 °.
In this taper range, the sealing surface 31 forms a taper seal with the injection port 51, and the sealing property is good.
Preferably, the outer wall of the resilient valve 3 is sealingly fitted with the inner wall of the spray cylinder 1.
The outer wall of the elastic valve 3 is assembled with the inner wall of the spray cylinder 1 in a sealing way, liquid medicament cannot flow from the gap between the elastic valve 3 and the spray cylinder 1, liquid, impurities or bacteria on the side close to the atomizing nozzle 11 are blocked by the elastic valve 3, and cannot enter the side of the elastic valve 3 close to the injector 5 through the gap between the elastic valve 3 and the spray cylinder 1 to contact the injection port 51 of the injector 5, so that the sterility of the liquid is ensured.
Preferably, the outer wall of the resilient valve 3 has an outwardly projecting annular flange 33, the annular flange 33 being in sealing engagement with the inner wall of the spray cylinder 1.
The annular flange 33 protrudes outwards and can be in abutting contact with the inner wall of the spray cylinder 1, so that the peripheral side wall of the elastic valve 3 is in abutting contact with the inner wall of the spray cylinder 1, and tightness is guaranteed. In other embodiments, the shape of the outer wall of the elastomeric valve 3 is not limited to the arrangement of the annular flange 33, as long as the circumferential side wall of the elastomeric valve 3 can be secured against the inner wall of the spray cylinder 1, including but not limited to cylindrical structures, wavy structures, etc.
Preferably, the end head 21 is provided with a blind hole 41 extending into the central column 22, a radial gap 43 is arranged between the outer wall of the central column 22 and the inner wall of the spray cylinder 1, a side hole 42 for communicating the blind hole 41 with the gap is also arranged on the side wall of the central column 22, and the liquid channel 4 comprises the blind hole 41, the side hole 42 and the radial gap 43.
In this embodiment, the outer diameter of the central column 22 is smaller than the inner diameter of the spray cylinder 1 at the central column 22, so that a radial gap 43 is formed, and the side holes 42 are arranged symmetrically on both sides of the central column 22 in two groups in total, increasing the flow rate of the liquid medicament. The end head 21 of the drainage piece 2 is abutted with the elastic valve 3, the blind hole 41 is arranged at the central positions of the end head 21 and the central column 22, the liquid medicament passing through the thorn seam 32 can directly enter the blind hole 41 and sequentially enter the atomizing nozzle 11 through the side hole 42 and the radial gap 43 to form spray.
Preferably, the outer wall of the end head 21 is provided with at least one longitudinal groove 23 extending along the axial direction of the spray cylinder 1, the contact surface of the end head 21 abutting against the elastic valve 3 is provided with a transverse groove 24 communicated with the longitudinal groove 23, the thorn seam 31 is communicated with the transverse groove 24, a radial gap 43 is arranged between the outer wall of the central column 22 and the inner wall of the spray cylinder 1, and the liquid channel 4 comprises the longitudinal groove 23, the transverse groove 24 and the radial gap 43.
As shown in fig. 5, longitudinal grooves 23 are arranged on the outer wall of the tip 21, at least one of the longitudinal grooves 23 being arranged in such a way that liquid is circulated by the longitudinal grooves 23 between the tip 21 and the inner wall of the spray cylinder 1. The transverse groove 24 on the contact surface of the end head 21 abutting against the elastic valve 3 can allow the liquid medicament to enter the transverse groove 24 through the thorn seam 31, and then enter the longitudinal groove 23 through the transverse groove 24, so that the liquid medicament can flow between the drainage piece 2 and the elastic valve 3. The outer diameter of the central column 22 of the flow guiding element 2 is smaller than the inner diameter of the spray cylinder 1 at the central column 22, so that a radial gap 43 is formed, and the liquid medicament flows out of the puncture 31, through the transverse groove 24, the longitudinal groove 23 and the radial gap 43 in sequence, to the atomizing nozzle 11.
Preferably, a clamping structure is further arranged between the drainage piece 2 and the spray cylinder 1, a convex ring or a plurality of protrusions which are annularly arranged are arranged on the inner wall of the spray cylinder 1, after the drainage piece 2 is pressed into the spray cylinder 1, the protrusions are positioned on one side of the drainage piece 2, which is close to the elastic valve 3, and the protrusions clamp the drainage piece 2 in the inner space of the spray cylinder 1, which is close to the atomizing nozzle 11. In other embodiments, the drainage member 2 and the spray cylinder 1 may be fixed by dispensing.
Preferably, the part of the injector 5 extending into the spray cylinder 1 and the spray cylinder 1 can be fixed in a clamping way, and the injection can be realized by arranging a convex ring on one of the outer wall of the tip part of the injector 5 and the inner wall of the spray cylinder 1 and arranging a concave ring on the other. In other embodiments, the syringe 5 and the spray cylinder 1 may be fixed by dispensing.
The utility model also provides a preferred embodiment of the spraying device, as shown in fig. 4, which comprises a syringe 5 and an atomization nozzle, wherein the syringe 5 is in the prior art, a push rod is arranged in the syringe, a piston is arranged at the end part of the push rod, the piston can slide in the syringe 5 and realize liquid sealing, the pressure can be applied to the elastic valve by pushing the push rod, and the elastic valve is forced to elastically deform. The dose limiter is arranged on the part of the push rod outside the injector 5, and the dose limiter is in the prior art and is used for limiting the moving length of the push rod relative to the injector 5, so that the medicament quantity which can be sprayed by the spraying device at one time is limited, and the rest medicament in the injector 5 can be pushed out after the limiting effect of the dose limiter on the push rod is released. The specific structure of the atomizer is the same as that of the atomizer in any of the above embodiments, and a description thereof will not be repeated here.
In summary, the embodiment of the utility model provides an atomization nozzle and an atomization device, which sequentially arrange a drainage piece and an elastic valve in an atomization cylinder, wherein the drainage piece has a drainage effect on liquid medicament, and simultaneously reduces dead space in the atomization cylinder, reduces the volume of the liquid medicament left in the atomization cylinder and reduces medicament waste; the sealing surface on the elastic valve is abutted with the injection port of the injector to seal the injection port of the injector, the elastic valve is not subjected to liquid pressure in a normal state, the thorn seam is kept closed, the elastic valve is in a sealing state, the injector can be sealed, the leakage of injection liquid in the injector in the process of storage and transportation is prevented, and the tightness of the liquid is ensured; meanwhile, the blocking face of the elastic valve blocks the injection port of the injector, and liquid, impurities or bacteria entering from the atomizing nozzle through one side of the liquid channel are blocked by the elastic valve, so that the liquid does not contact the injection port of the injector, and the sterility of the liquid is ensured; when the atomization operation is needed, the injector injects liquid medicament into the spray cylinder body through the injection port, the elastic valve is elastically deformed after receiving the liquid pressure, the thorn seam is opened, the elastic valve is in a circulation state, and the liquid medicament is sprayed out through the thorn seam, the liquid channel and the atomization nozzle, so that the atomization operation is realized.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (11)
1. The atomizing spray head is characterized by comprising a spraying cylinder body, a drainage piece and an elastic valve, wherein one end of the spraying cylinder body is provided with an atomizing nozzle, and the other end of the spraying cylinder body is provided with an opening for an injector to enter;
the drainage piece and the elastic valve are sequentially arranged in the spraying cylinder along the direction from the atomizing nozzle to the opening, one side, close to the opening, of the elastic valve is provided with a plugging surface which is in butt joint with an injection port of the plugging device and is used for plugging the injection port of the injector, a thorn seam is arranged in the elastic valve, and the elastic valve is provided with a sealing state in which the thorn seam is closed in a normal state and a circulation state in which the thorn seam is opened for liquid circulation due to the elastic deformation under pressure when the injector is pressurized for injection;
the drainage piece include the end and with the coaxial center post of arranging of end, the end with the elastic valve butt, the center post is located and is close to one side of atomizing spout, the drainage piece with be provided with the intercommunication between the spraying barrel the atomizing spout with the liquid passage of thorn seam.
2. The atomizer of claim 1 wherein said stabs extend in an axial direction of said spray cylinder, said stabs being radially spaced apart on said elastomeric valve.
3. The atomizer head according to claim 2, wherein said piercing slit is formed by piercing with a piercing needle, defining a diameter d of the piercing needle and the number of piercing slits n, the piercing area s = pi (d/2) of the piercing slit 2 ×n，d≥0.1mm。
4. The atomizing nozzle according to claim 3, wherein the penetration area S of the penetration slit is greater than or equal to pi (0.1 mm/2) 2 ×3。
5. The atomizing nozzle of any one of claims 1 to 4, wherein the blocking surface has a tapered configuration in which an outer diameter gradually decreases in a direction approaching the syringe, and a tip of the blocking surface is matched with a shape of an injection port of the syringe.
6. The atomizer of claim 5 wherein said blocking surface has a taper in the range of 105 ° to 179 °.
7. The atomizer of any one of claims 1 to 4 wherein an outer wall of said elastomeric valve is sealingly mounted to an inner wall of said spray cylinder.
8. The atomizer of claim 7 wherein said elastomeric valve outer wall has an outwardly projecting annular flange in sealing engagement with said spray barrel inner wall.
9. The atomizer of any one of claims 1 to 4 wherein said tip is provided with a blind bore extending into said central post, a radial gap is provided between an outer wall of said central post and an inner wall of said spray cylinder, a side bore is provided in a side wall of said central post communicating said blind bore with said gap, and said fluid passage comprises said blind bore, said side bore and said radial gap.
10. The atomizer of any one of claims 1 to 4 wherein said outer wall of said tip is provided with at least one longitudinal groove extending in an axial direction of said spray cylinder, said contact surface of said tip abutting said elastomeric valve is provided with a transverse groove communicating with said longitudinal groove, said stab seam communicates with said transverse groove, a radial gap is provided between said outer wall of said center post and said inner wall of said spray cylinder, said fluid passage comprises said longitudinal groove, said transverse groove and said radial gap.
11. A spray device comprising an injector and an atomizer, wherein the atomizer is according to any one of claims 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506961.0U CN219963656U (en) | 2023-06-14 | 2023-06-14 | Atomizing nozzle and atomizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506961.0U CN219963656U (en) | 2023-06-14 | 2023-06-14 | Atomizing nozzle and atomizer |
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| Publication Number | Publication Date |
|---|---|
| CN219963656U true CN219963656U (en) | 2023-11-07 |
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| CN202321506961.0U Active CN219963656U (en) | 2023-06-14 | 2023-06-14 | Atomizing nozzle and atomizer |
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| Country | Link |
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| CN (1) | CN219963656U (en) |
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