Nozzle, and spray pump and spray device comprising same

Abstract

A nozzle includes: a nozzle sheet in which a nozzle hole is formed; and a nozzle core, wherein the nozzle sheet and the nozzle core are assembled together. Wherein one of the nozzle sheet and the nozzle core comprises at least one positioning tube, the other of the nozzle sheet and the nozzle core comprises at least one positioning interlayer, and when the nozzle sheet and the nozzle core are assembled together, the positioning tube is matched in the positioning interlayer, so that the nozzle sheet and the nozzle core are kept coaxial. The nozzle structure can ensure that the nozzle piece and the nozzle core are kept coaxial, and a good spraying effect is provided. The utility model further relates to an atomizing pump and an atomizing device comprising the nozzle.

Description

Technical Field

[0001] This application relates to the field of product packaging, specifically to a spray pump installed on a product packaging container, and particularly to the structural design of the nozzle used for the spray pump. Background Technology

[0002] Spray pumps are widely used in product packaging in many fields, such as daily chemical products including perfumes, hair oils, and serums, pharmaceuticals including nasal sprays and oral sprays, and food packaging including edible oils, etc.

[0003] A key criterion for judging the quality of a spray pump is its spray effect. The main parameters determining the spray effect include spray angle, spray pattern, and particle size. The main component affecting these parameters is the spray pump nozzle. Generally, a spray pump nozzle consists of a nozzle vane and a nozzle core, which are typically molded separately and then assembled together.

[0004] Due to factors such as materials, structural design, mold precision, and assembly processes, the quality of produced spray pumps can sometimes be unstable. For example, the groove inside the liquid outlet of the spray pump head may collapse and deform during demolding, causing the nozzle installed in the head to easily loosen, and the depth to which the nozzle is inserted into the head may also vary. Another example is that misalignment can easily occur between the nozzle plate and nozzle core during assembly, affecting the spray quality. Therefore, spray pumps produced using existing processes need to undergo individual spray performance testing to eliminate those with poor spray performance.

[0005] Conducting spray tests on manufactured spray pumps has several drawbacks. First, it increases the production process and costs. Removing defective products further increases production costs. Second, spray pump spray performance testing uses water, which increases the risk of contamination. Residual water in the spray pump can easily breed bacteria. Adding a disinfection process to the spray pump production line would further increase production costs.

[0006] Therefore, there is a need in the field of spray pumps to further improve the structure of spray pumps, especially their nozzles, in order to overcome the technical problems existing in the prior art spray pumps described above. Utility Model Content

[0007] This application is made to address the technical problems existing in the prior art described above. The purpose of this application is to provide a nozzle with an improved structure that ensures the nozzle blade and nozzle core are coaxial after installation. Furthermore, the nozzle's construction ensures the insertion depth of the nozzle blade relative to the nozzle core, preventing it from loosening. This application also provides a spray pump incorporating this nozzle.

[0008] The nozzle of this application includes: a nozzle blade with spray holes formed thereon; and a nozzle core, the nozzle blade and the nozzle core being assembled together. One of the nozzle blade and the nozzle core includes at least one positioning tube, and the other includes at least one positioning interlayer. When the nozzle blade and the nozzle core are assembled together, the positioning tube engages in the positioning interlayer, thereby keeping the nozzle blade and the nozzle core coaxial. Preferably, the positioning tube and the positioning interlayer have complementary shapes.

[0009] In the nozzle with the above structure, the cooperation between the positioning tube and the positioning interlayer helps to align the nozzle blade and the nozzle core, thereby ensuring that the nozzle blade and the nozzle core remain coaxial. Furthermore, the nozzle formed by the coaxial nozzle blade and nozzle core maintains a good spray effect.

[0010] In one specific structure, the nozzle disc includes a tubular body, the positioning tube is a tubular body, and the nozzle core includes an outer wall and an inner core located inside the outer wall. The outer wall and the inner core are connected to each other by a connecting structure, and a positioning interlayer is formed between the outer wall and the inner core.

[0011] Preferably, the nozzle also includes a backstop mechanism disposed between the nozzle blade and the nozzle core. This backstop mechanism prevents the nozzle blade from slipping off relative to the nozzle core under spray pressure during spraying, thereby helping to maintain or even improve the spraying effect of the nozzle.

[0012] One specific structure of the anti-reverse mechanism includes: an anti-reverse block disposed on one of the outer walls of the tubular body of the nozzle plate and the nozzle core, and a positioning hole disposed on the other of the outer walls of the tubular body of the nozzle plate and the nozzle core. Alternatively, the anti-reverse mechanism may include a first protrusion disposed on one of the outer walls of the tubular body of the nozzle plate and the nozzle core, and a first groove disposed on the other of the outer walls of the tubular body of the nozzle plate and the nozzle core.

[0013] Further preferably, a guide surface is formed on one side of the anti-reverse block and / or the protrusion, and a stop surface is formed on the opposite side of the anti-reverse block and / or the protrusion. The guide surface may be formed, for example, a bevel or an arc surface, which facilitates the anti-reverse block / first protrusion into the positioning hole / first groove. The stop surface may be formed, for example, a right-angled surface or a barb shape, which prevents the anti-reverse block / first protrusion from dislodging from the positioning hole / first groove, thereby fixing the position of the nozzle plate relative to the nozzle core.

[0014] Preferably, the nozzle blade and the nozzle core are connected to each other via a threaded connection structure, wherein the relative axial position between the nozzle blade and the nozzle core can be adjusted by rotating the nozzle blade. By adjusting the axial position of the nozzle blade relative to the nozzle core, the spray effect of the nozzle can be adjusted.

[0015] Preferably, the outer end of the nozzle core's outer wall protrudes beyond the outer end of the nozzle disc. This allows the nozzle disc to be recessed into the outer wall of the nozzle core. During nozzle installation, the pressure is primarily borne by the outer wall of the nozzle core, rather than pressing against the nozzle disc. Therefore, it prevents pressure during press-fitting from affecting the nozzle disc's installation position, which would otherwise impact the spray effect. Furthermore, a flange can be provided on the outer end of the nozzle core's outer wall to further protect the nozzle disc.

[0016] Preferably, at least two protrusions are formed on the inner surface of the tubular body of the nozzle plate. When the nozzle plate and the nozzle core are assembled together, the protrusions cooperate with the inner core, and a liquid guiding groove is formed between adjacent protrusions. The liquid guiding groove communicates with the spray hole of the nozzle plate.

[0017] Preferably, the connection structure between the outer wall and the inner core is a connecting wall, and at least one liquid inlet hole is provided on the connecting wall.

[0018] This application also provides a spray pump, which includes a spray pump head with a liquid outlet formed therein. The spray pump further includes a nozzle as described above, which is inserted into the liquid outlet of the head.

[0019] Preferably, a second protrusion is provided in one of the nozzle and the liquid outlet of the pressure head, and a second groove is provided in the other of the nozzle and the liquid outlet of the pressure head. When the nozzle is inserted into the liquid outlet of the pressure head, the second protrusion engages with the second groove. The engagement between the second protrusion and the second groove facilitates the secure installation of the nozzle in the liquid outlet of the spray pump pressure head.

[0020] Preferably, a seal is provided between the outer surface of the nozzle and the inner surface of the liquid outlet of the pressure head to prevent leakage at the mounting interface between the nozzle and the liquid outlet of the pressure head.

[0021] The aforementioned spray pump can be of various types, such as a long-nozzle spray pump, a nasal spray pump, etc.

[0022] In addition to being installed on spray pumps, the above-mentioned nozzles can also be applied to other spray devices that can generate sprays, such as disposable nasal delivery devices, pre-laryngeal delivery devices with tubing, and so on. Attached Figure Description

[0023] The accompanying drawings illustrate a non-limiting preferred embodiment of this application, and the features and advantages of this application become more apparent when viewed in conjunction with the drawings. Wherein:

[0024] Figure 1 A perspective view of the spray pump head of the spray pump according to the first embodiment of this application is shown, wherein a nozzle that can be inserted into the liquid outlet hole of the spray pump head is shown.

[0025] Figure 2 It shows Figure 1 A cross-sectional view of the spray pump head.

[0026] Figure 3a It shows Figure 1 A cross-sectional view of the nozzle.

[0027] Figure 3b It shows Figure 1 An exploded 3D view of the nozzle.

[0028] Figure 4a It shows Figure 3a and 3b A three-dimensional view of the nozzle blades.

[0029] Figure 4b It shows Figure 4a A cross-sectional view of the nozzle plate.

[0030] Figure 4c It shows along Figure 4b The plan view of the nozzle plate as seen in the direction pointed to by arrow A.

[0031] Figure 5a It shows Figure 3a and 3b A three-dimensional view of the nozzle core.

[0032] Figure 5b A perspective view of the nozzle core from another direction is shown.

[0033] Figure 5c It shows Figure 5a A cross-sectional view of the nozzle core.

[0034] Figure 6a This shows the installed state. Figure 1 The image shows a cross-sectional view of the spray pump head.

[0035] Figure 6b yes Figure 6a A magnified view of part I.

[0036] Figure 7 A cross-sectional view of a nozzle according to a second embodiment of this application is shown.

[0037] Figure 8 It shows Figure 7 A cross-sectional view of the nozzle blades of the nozzle shown.

[0038] Figure 9 It shows Figure 7 A cross-sectional view of the nozzle core of the nozzle shown.

[0039] Figure 10a It shows that it is installed Figure 7 A cross-sectional view of the spray pump head of the nozzle shown.

[0040] Figure 10b yes Figure 10a A magnified view of part II.

[0041] Figure 11a This is a cross-sectional view of the nozzle core of the nozzle according to the third embodiment of this application.

[0042] Figure 11b yes Figure 11a A three-dimensional view of the nozzle core.

[0043] Figure 12 This is a cross-sectional view of a long-nozzle spray pump equipped with the nozzle of this application.

[0044] Figure 13 This is a cross-sectional view of a nasal spray pump equipped with the nozzle of this application.

[0045] Figure 14 This is a cross-sectional view of a disposable nasal delivery device equipped with the nozzle of this application.

[0046] Figure 15a and 15b These are, respectively, a perspective view and a cross-sectional view of a pre-larynx drug delivery device equipped with the nozzle of this application.

[0047] (Symbol Explanation)

[0048] 1 spray pump head

[0049] 10-head liquid outlet

[0050] 11 Seals

[0051] 12 Second Groove

[0052] 100 nozzles

[0053] 110 nozzle plate

[0054] 111 tubular body

[0055] 112 outer end wall

[0056] 113 nozzle

[0057] 114 bumps

[0058] 115 Liquid Guide Tank

[0059] 116 spiral flow channel

[0060] 120 nozzle core

[0061] 121 outer wall

[0062] 122 inner core

[0063] 123 Positioning Mezzanine

[0064] 124 connecting wall

[0065] 125 Inlet Hole

[0066] 126 Second protrusion

[0067] 131 backstop block

[0068] 132 positioning holes

[0069] 133 Guide Surface

[0070] 134 stop surface

[0071] 200 nozzles

[0072] 211 tubular body

[0073] 210 nozzle plate

[0074] 221 outer wall

[0075] 220 nozzle core

[0076] 231 First protrusion

[0077] 232 First Groove

[0078] 320 nozzle core

[0079] 321 flange edge Detailed Implementation

[0080] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments shown in the drawings are merely preferred embodiments of this utility model and do not constitute a limitation on the scope of this utility model. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to this utility model based on the embodiments shown in the drawings. Furthermore, without contradiction, the technical features in the different embodiments described below can be arbitrarily combined with each other, all of which fall within the protection scope of this utility model.

[0081] In this application, terms indicating location such as "inner" and "outer" are used with reference to the spray pump, where "inner" indicates the orientation of the spray pump components or the part closer to the inside of the spray pump, and "outer" indicates the orientation of the spray pump components or the part closer to the external environment.

[0082] <First Embodiment>

[0083] Figure 1-6b A schematic diagram of the components of the spray pump according to the first embodiment of this application is shown. Wherein, Figure 1 An exploded perspective view of the spray pump head 1 of the spray pump is shown, showing a nozzle 100 that can be installed in the spray pump head 1. Figure 2 A cross-sectional view of the spray pump head 1 is shown, omitting the nozzle 100 installed therein. As can be seen from the figure, the spray pump head 1 is provided with a head outlet 10 that communicates with the external environment, and the nozzle 100 can be inserted into the head outlet 10.

[0084] Figure 3a A cross-sectional view of nozzle 100 is shown. Figure 3b An exploded perspective view of nozzle 100 is shown. Nozzle 100 includes nozzle blade 110 and nozzle core 120, wherein nozzle blade 110 can be inserted into nozzle core 120 to form nozzle 100.

[0085] The following will refer to further details. Figures 4a-5c This section describes in detail the specific structure of the nozzle blade 110 and the nozzle core 120 of the nozzle 100, as well as the connection method between them.

[0086] Figures 4a-4c An exemplary nozzle plate 110 is shown. The nozzle plate 110 includes a generally tubular body 111. An outer end wall 112 is provided at the outer end of the tubular body 111, and a nozzle orifice 113 is provided on the outer end wall 112. The nozzle orifice 113 is a through hole, thereby communicating the internal space of the tubular body 111 with the external environment. Typically, the nozzle orifice 113 is preferably located at the center of the outer end wall 112.

[0087] Figures 5a-5c An exemplary nozzle core 120 is shown, comprising an outer wall 121 and an inner core 122 located inside the outer wall 121. A positioning interlayer 123 is formed between the outer wall 121 and the inner core 122, the positioning interlayer 123 being configured to mate with the outer peripheral wall of the tubular body 111 of the nozzle piece 110. Preferably, the shape of the positioning interlayer 123 is complementary to the shape of the outer peripheral wall of the tubular body 111.

[0088] The outer wall 121 and the inner core 122 can be connected together by a structure such as a connecting wall 124. For example, from Figure 5bAs can be seen, the connecting wall 124 is located at the inner end of the nozzle core 120. Of course, the connecting wall 124 can also be located in other suitable positions. Alternatively, other structures can be used to achieve the connection between the outer wall 121 and the inner core 122, such as multiple connecting posts connecting the outer wall 121 and the inner core 122. In the case where the outer wall 121 and the inner core 122 are connected by the connecting wall 124, at least one liquid inlet hole 125 is formed on the connecting wall 124, for example, two liquid inlet holes 125 are formed as shown in the figure, to allow the product to flow into the nozzle 100.

[0089] When the nozzle plate 110 and the nozzle core 120 are assembled together, the tubular body 111 is inserted into the positioning interlayer 123 and engages with the positioning interlayer 123.

[0090] The fit between the tubular body 111 and the positioning interlayer 123 helps to align the nozzle blade 110 and the nozzle core 120, thereby ensuring that the nozzle blade 110 and the nozzle core 120 remain coaxial.

[0091] from Figure 4b and 4c As can be seen, at least two protrusions 114 are formed on the inner surface of the tubular body 111, such as the three protrusions 114 arranged circumferentially along the cross-section of the tubular body 111 shown in the figure. When the nozzle plate 110 and the nozzle core 120 are assembled together, the protrusions 114 engage with the outer surface of the inner core 122 of the nozzle core 120, thereby helping to maintain the coaxial relationship between the nozzle plate 110 and the nozzle core 120. A liquid guiding groove 115 is formed between adjacent protrusions 114, which communicates with the spray hole 113, thereby allowing the product to flow into the spray hole 113 and be sprayed outward from the spray hole 113.

[0092] Better, such as from Figure 4c As seen in the image, multiple spiral channels 116 are formed on the inner surface of the outer end wall 112. The spiral channels 116 are aligned with the space between two adjacent protrusions 114; in other words, the spiral channels 116 are connected to the liquid guide groove 115. After the product flows through the spiral channels 116, it can generate radial centrifugal force, which helps to improve the atomization effect of the product after it flows out of the nozzle 113.

[0093] Preferably, a backstop mechanism is also provided in the nozzle 100. The backstop mechanism is located between the nozzle plate 110 and the nozzle core 120. It can prevent the nozzle plate 110 from loosening relative to the nozzle core 120, thereby ensuring the atomization effect of the nozzle 100.

[0094] Reference Figures 4a-5c One specific embodiment of the anti-reverse mechanism includes at least one anti-reverse block 131 disposed on the outer surface of the tubular body 111 of the nozzle plate 110. For example, from Figure 4a As can be seen, two anti-reverse blocks 131 are spaced 180° apart circumferentially on the outer surface of the tubular body 111. Correspondingly, at least one positioning hole 132 is formed on the outer wall 121 of the nozzle core 120. This positioning hole 132 is preferably a through hole, and the number and position of the positioning holes 132 correspond to the number and position of the anti-reverse blocks 131 on the nozzle plate 110. For example, from Figure 5a As seen in the image, there are two positioning holes 132 spaced 180° apart circumferentially on the outer wall 121. When the nozzle plate 110 is assembled with the nozzle core 120, the anti-reverse block 131 engages with the positioning hole 132, thereby fixing the depth to which the nozzle plate 110 is inserted into the nozzle core 120.

[0095] The anti-reverse block 131 preferably includes a guide surface 133 on its inner side (i.e., the side facing the inside of the spray pump), which may be formed, for example, as a bevel or an arc surface. During the insertion of the nozzle plate 110 into the nozzle core 120, the guide surface 133 can guide the anti-reverse block 131 into the positioning hole 132.

[0096] Alternatively, the anti-reverse block 131 has a stop surface 134 formed on its outer side (i.e., the side facing the external environment), which is, for example, formed in the shape of a right angle or a barb. When the anti-reverse block 131 is engaged in the positioning hole 132, the stop surface 134 abuts against the inner circumferential surface of the positioning hole 132, which helps to prevent the nozzle blade 110 from loosening outward from the nozzle core 120 due to the spray pressure during spraying.

[0097] Back Figure 3a The nozzle core 120 is shown to preferably protrude beyond the outer end of the nozzle plate 110. In other words, the outer end of the nozzle plate 110 is recessed inward relative to the nozzle plate 110. Thus, when the nozzle 100 is installed onto the spray pump head 1, primarily the nozzle core 120 contacts the liquid outlet 10 of the spray pump head 1, and only the outer wall 121 of the nozzle core 120 is pressurized, without pressing the nozzle plate 110. Therefore, during the installation of the nozzle 100, the nozzle plate 110 is prevented from being affected by pressure, thus ensuring the atomization effect of the spray pump.

[0098] like Figure 6a and 6b As shown, the assembled nozzle 100 can be inserted into the nozzle outlet 10 of the spray pump head 1, thus completing the installation. Preferably, from... Figure 6bAs can be seen more clearly, a seal 11 is provided between the nozzle 100 and the liquid outlet 10 of the pressure head to help prevent product leakage. Specifically, the seal 11 is provided between the outer surface of the nozzle core 120 of the nozzle 100 and the inner surface of the liquid outlet 10 of the pressure head. The seal 11 is, for example, a sealing ring made of an elastic material.

[0099] <Second Embodiment>

[0100] Figure 7-10b The second embodiment of this application shows a spray pump head 1 and a nozzle 200 installed in the spray pump head 1. Unless otherwise described or conflicted, the specific structures described above with respect to the first embodiment also apply to the second embodiment. The structures of the second embodiment that differ from the first embodiment will be described in detail below.

[0101] like Figure 7-9 As shown, the nozzle 200 includes a nozzle blade 210 and a nozzle core 220. A backstop mechanism is provided between the nozzle blade 210 and the nozzle core 220. In a second embodiment, the backstop mechanism includes a first protrusion 231 formed on the outer peripheral surface of the tubular body 211 of the nozzle blade 210. The first protrusion 231 may be a circumferentially extending ring around the tubular body 211, or it may be a structure of multiple protrusions arranged circumferentially. Correspondingly, the backstop mechanism also includes a first groove 232 formed on the inner surface of the outer wall 121 of the nozzle core 220.

[0102] When the nozzle plate 210 and the nozzle core 220 are assembled together, the first protrusion 231 engages with the first groove 232, thereby fixing the axial relative position between the nozzle plate 210 and the nozzle core 220 and preventing the nozzle plate 210 from loosening relative to the nozzle core 220 under the action of spray pressure.

[0103] <Third Embodiment>

[0104] Figure 11a and 11b The nozzle core 320 of the third embodiment of this application is shown. Unless otherwise described to the contrary or conflicting, the specific structures described above with respect to the first and second embodiments also apply to the third embodiment. The structures of the third embodiment that differ from those of the first and second embodiments will be described in detail below.

[0105] In the third embodiment, the main difference from the first and second embodiments lies in the modification of the nozzle core 320 structure. Specifically, as shown in the figure, a flange edge 321 is formed on the distal end of the nozzle core 320. During the process of installing the nozzle onto the spray pump head 1, this flange edge 321 can protect the spray blade from pressure, thereby ensuring that the installation position of the nozzle blade is not affected, and thus ensuring the atomization effect.

[0106] The structures of various specific embodiments of this application have been described in detail above. Those skilled in the art can make various modifications, variations, and combinations of features from these embodiments, all of which are within the scope of this application.

[0107] For example, in the embodiments disclosed above, the anti-reverse mechanism includes two anti-reverse blocks 131 and two corresponding positioning holes 132. In addition, other numbers of anti-reverse blocks and positioning holes may be provided as needed, such as three, four, etc. Moreover, these anti-reverse blocks and positioning holes may be arranged at equal intervals or at unequal intervals. These variations are also within the scope of this application.

[0108] Furthermore, the positions of the anti-reverse block 131 and the positioning hole 132 can be interchanged; that is, the anti-reverse block 131 can be formed on the inner surface of the outer wall 121 of the nozzle core 120, and the positioning hole 132 can be formed on the outer surface of the tubular body 111 of the nozzle plate 110. Correspondingly, the guide surface 133 can be formed on the outer side of the anti-reverse block 131, and the stop surface 134 can be formed on the inner side of the anti-reverse block 131.

[0109] Similarly, in cases where the anti-reverse mechanism includes a first protrusion 231 and a first groove 232, the positions of the first protrusion 231 and the first groove 232 can be interchanged. In other words, the first protrusion 231 can be disposed on the inner surface of the outer wall 221 of the nozzle core 220, and the first groove 232 can be disposed on the outer surface of the tubular body 211 of the nozzle plate 210. Alternatively, multiple protrusions and recesses can be simultaneously disposed on the outer wall 221 of the nozzle core 220, while multiple grooves and protrusions can be correspondingly disposed on the tubular body 211 of the nozzle plate 210.

[0110] In addition, similar to the anti-reverse block 131, the first protrusion 231 may also include a structure of a guide surface and a stop surface.

[0111] In the embodiments described above, a positioning interlayer 123 is formed in the nozzle core 120, and the tubular body 111 of the nozzle plate 110 is fitted into the positioning interlayer 123, thereby serving as a positioning tube. Apart from this structure, the positions of the positioning tube and the positioning interlayer can be interchanged; that is, the positioning interlayer is formed in the nozzle plate, and the positioning tube is formed in the nozzle core. Furthermore, multiple positioning tubes and multiple positioning interlayers corresponding to the multiple positioning tubes can be formed to further help ensure the coaxial relationship between the nozzle plate and the nozzle core.

[0112] For example, in the embodiments described above, the nozzle plate 110 and the nozzle core 120 are fixed to each other by an engaging mechanism, such as by providing a protrusion 114 to achieve engagement between the tubular body 111 of the nozzle plate 110 and the inner core 122 of the nozzle core 120. Alternatively, the nozzle plate 110 and the nozzle core 120 can be connected in other ways, such as through a threaded connection structure. Furthermore, in the case of a threaded connection structure, the relative axial position between the nozzle plate 110 and the nozzle core 120 can be adjusted by rotating the nozzle plate 110, which can adjust the spray atomization effect of the spray pump.

[0113] Furthermore, the embodiments described above primarily depict applications where the nozzle is mounted on a spray pump. However, the disclosed nozzle can also be used in other configurations, such as when connected to a hose, etc.

[0114] In addition, combined Figure 2 and Figures 5a-5c As can be seen, a second protrusion 126 is formed on the outer surface of the outer wall 121 of the nozzle core 120, and a second groove 12 is formed on the inner surface of the liquid outlet 10 of the pressure head. When the nozzle 100 is installed on the spray pump pressure head 1, the second protrusion 126 and the second groove 12 cooperate to achieve fixed installation of the nozzle 100 in the liquid outlet 10 of the pressure head. Furthermore, it is known that the positions of the second protrusion 126 and the second groove 12 are interchangeable.

[0115] In addition to including Figure 6a and 10a In addition to the spray pump of the spray pump head 1 shown, the nozzle of this application can also be used on spray pumps of other structures, such as... Figure 12 The long-nozzle spray pump shown Figure 13 The nasal spray pump shown.

[0116] Furthermore, in addition to spray pumps, the nozzles of this application can also be mounted on other types of spraying devices. For example, they can be mounted on... Figure 14 The disposable nasal delivery device shown can also be installed on, for example, a disposable nasal delivery device. Figure 15a and 15b The pre-laryngeal drug delivery device shown.

[0117] It should be noted that, in Figure 12-15b In the accompanying drawings, nozzles installed in various devices are indicated by reference numeral 100, but this does not mean that the nozzles installed in these devices are limited to the nozzle 100 of the first embodiment. Nozzles having the structures of the second embodiment, the third embodiment, or a combination of the structures of the first to third embodiments may also be installed in these devices.

Claims

1. A nozzle comprising: a nozzle sheet having a nozzle hole formed thereon; and a nozzle core assembled with the nozzle sheet, characterized in that one of the nozzle sheet and the nozzle core comprises at least one positioning tube, and the other of the nozzle sheet and the nozzle core comprises at least one positioning interlayer, wherein the positioning tube is fitted in the positioning interlayer when the nozzle sheet and the nozzle core are assembled, so that the nozzle sheet and the nozzle core are kept coaxial. the nozzle sheet comprises a tubular body, and the positioning tube is the tubular body, 2. The nozzle of claim 1, wherein the nozzle core comprises an outer wall and an inner core inside the outer wall, the outer wall and the inner core are connected with each other through a connecting structure, and the positioning interlayer is formed between the outer wall and the inner core. the nozzle further comprises a retreat-stop mechanism arranged between the nozzle sheet and the nozzle core, wherein the retreat-stop mechanism comprises:

3. The nozzle of claim 2, wherein a retreat-stop block arranged on one of the tubular body of the nozzle sheet and the outer wall of the nozzle core, and a positioning hole arranged on the other of the tubular body of the nozzle sheet and the outer wall of the nozzle core; or a first protruding part arranged on one of the tubular body of the nozzle sheet and the outer wall of the nozzle core, and a first groove arranged on the other of the tubular body of the nozzle sheet and the outer wall of the nozzle core. a guide surface is formed on one side of the retreat-stop block and / or the protruding part, and a stop surface is formed on the other side of the retreat-stop block and / or the protruding part.

4. The nozzle of claim 3, wherein the nozzle sheet and the nozzle core are connected with each other through a threaded connecting structure, wherein the relative axial position between the nozzle sheet and the nozzle core can be adjusted by rotating the nozzle sheet.

5. The nozzle of claim 1, wherein an outer end of the outer wall of the nozzle core protrudes beyond an outer end of the nozzle sheet; and / or 6. The nozzle of claim 2, wherein a flange is arranged on the outer end of the outer wall of the nozzle core. at least two protrusions are formed on the inner surface of the tubular body of the nozzle sheet, the protrusions are fitted with the inner core when the nozzle sheet and the nozzle core are assembled, and a liquid guide groove is formed between adjacent protrusions, the liquid guide groove communicates with the nozzle hole of the nozzle sheet.

7. The nozzle of claim 2 wherein, the connecting structure between the outer wall and the inner core is a connecting wall, at least one liquid inlet hole is arranged on the connecting wall.

8. The nozzle of claim 2, wherein the spray pump further comprises the nozzle according to any one of claims 1-8, the nozzle is inserted into the outlet hole of the pressure head.

9. A spray pump comprising a spray pump head having a head outlet aperture formed therein, characterised in that, a second protruding part is arranged in one of the nozzle and the outlet hole of the pressure head, and a second groove is arranged in the other of the nozzle and the outlet hole of the pressure head, the second protruding part is fitted with the second groove when the nozzle is inserted into the outlet hole of the pressure head.

10. The spray pump of claim 9, wherein, a sealing member is arranged between the outer surface of the nozzle and the inner surface of the outlet hole of the pressure head.

11. The spray pump of claim 9, wherein, the spray pump is a long nozzle spray pump or a nasal spray pump.

12. The spray pump of claim 9, wherein, the spray device comprises the nozzle according to any one of claims 1-8.

13. A spray device characterized in that, the spray device is a disposable nasal administration device or a pre-laryngeal administration device.

14. The spray device of claim 13, wherein, ​

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