A spray head, a pump body assembly for a sprayer and a sprayer

Abstract

This application relates to the field of medical device technology, specifically to a nozzle, a pump assembly for a nebulizer, and a nebulizer. A first dispersion region is internally provided with a flow-diverting assembly and a recirculation assembly. Along the direction from the inlet to the outlet, the flow-diverting assembly and the recirculation assembly are alternately arranged, with the first being the flow-diverting assembly. The flow-diverting assembly includes multiple flow-diverting elements, and the recirculation assembly includes multiple recirculation elements. The gap between two adjacent flow-diverting elements in the same flow-diverting assembly is a first flow gap, and the gap between two adjacent recirculation elements in the same recirculation assembly is a second flow gap. The volume of at least one of the flow-diverting elements and the recirculation elements gradually increases along the direction from the inlet to the outlet, causing at least one of the first flow gap and the second flow gap to gradually decrease along the direction from the inlet to the outlet. This application improves the atomization effect and drug absorption rate through a gradually narrowing flow gap and a cyclical process of "flow-diverting → acceleration → recirculation collision → reflow-diverting → reacceleration → recirculation collision".

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a nozzle, a pump assembly for a sprayer, and a sprayer. Background Technology

[0002] Inhalation is the simplest and most effective route of drug administration for treating respiratory diseases such as asthma. Currently, inhalation is mainly achieved through nebulizers; however, the atomization effect of the nozzles in these nebulizers is poor, resulting in low drug absorption rates.

[0003] Therefore, how to provide a nozzle with good atomization effect has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide a nozzle, a pump assembly for a sprayer, and a sprayer to solve the problems of poor atomization and low drug absorption rate. The specific solution is as follows:

[0005] A nozzle has a liquid inlet, a liquid outlet, and a liquid passage connecting the liquid inlet and the liquid outlet. The liquid passage includes a first dispersion region, and a flow-diverting component and a flow-returning component are disposed inside the first dispersion region. Along the direction from the liquid inlet to the liquid outlet, the flow-diverting component and the flow-returning component are alternately arranged in sequence, and the first one is the flow-diverting component.

[0006] The diversion assembly includes multiple diversion elements, and the return assembly includes multiple return elements. In the direction perpendicular to the direction from the inlet to the outlet, multiple diversion elements in the same diversion assembly are arranged at intervals in sequence, and multiple return elements in the same return assembly are arranged at intervals in sequence. The diversion elements in the diversion assembly and the return elements in adjacent return assemblies are arranged alternately.

[0007] The gap between two adjacent flow dividers in the same flow divider assembly is the first flow gap, and the gap between two adjacent flow returnrs in the same flow return assembly is the second flow gap. The volume of at least one of the flow dividers and the flow returnrs gradually increases along the direction from the inlet to the outlet, so that at least one of the first flow gap and the second flow gap gradually decreases along the direction from the inlet to the outlet.

[0008] Optionally, the volume of the diverting component gradually increases along the direction from the inlet to the outlet. Except for the reflux assembly near the end of the outlet, the volume of the reflux component in the other reflux assemblies gradually increases along the direction from the inlet to the outlet.

[0009] Optionally, the portion of the reflux assembly near the outlet is a first reflux assembly, and the diversion assembly located on the side of the first reflux assembly near the outlet and adjacent to the first reflux assembly is a first diversion assembly.

[0010] A first dispersion column is provided between the first reflux component and the first diversion component, and the volume of the first dispersion column gradually increases along the direction close to the liquid outlet.

[0011] Optionally, a portion of the first dispersion column is located between any of the return flow members and the two adjacent flow dividers; a portion of the first dispersion column is located between any of the flow dividers and the two adjacent return flow members.

[0012] Optionally, the diverting member has a diversion angle facing the liquid outlet, and in the return flow assembly near the end of the liquid outlet, a plurality of second dispersion columns are provided between two adjacent return flow members, and the plurality of second dispersion columns are located on both sides of the corresponding diversion angle.

[0013] Optionally, the liquid passage further includes a second dispersion region, which is closer to the liquid outlet than the first dispersion region;

[0014] The second dispersion region is uniformly arranged with multiple third dispersion columns. In the direction perpendicular to the liquid inlet to the liquid outlet, the gap between two adjacent third dispersion columns is the third diversion gap. The third diversion gap gradually decreases in the direction from the liquid inlet to the liquid outlet.

[0015] This application also provides a pump body assembly for a sprayer, including the aforementioned nozzle.

[0016] Optionally, the pump body assembly further includes:

[0017] A nozzle body having a first receiving groove;

[0018] The first stop block is installed in the first receiving groove, and the first stop block has a second receiving groove. The nozzle part is installed in the second receiving groove. The axially opposite end walls of the first stop block and the nozzle body are respectively provided with sealing grooves, and the axially opposite end walls of the two sealing grooves are provided with ribs.

[0019] A seal is installed inside the two sealing grooves, with the axial end walls of the seal abutting against the corresponding ribs.

[0020] This application also provides a sprayer, including the aforementioned sprayer pump assembly.

[0021] Optionally, the sprayer further includes a mounting sleeve for partially mounting the pump body assembly. In the pump body assembly, the outer wall of the nozzle body has a limiting protrusion, and the wall of the mounting sleeve has a limiting groove. The limiting groove passes through one end wall of the mounting sleeve and through the inner and outer walls of the mounting sleeve. The limiting protrusion is circumferentially limited and inserted into the corresponding limiting groove.

[0022] The technical effects of this application are as follows:

[0023] In the nozzle of this application, the flow splitting component mainly plays a role in flow splitting. When the liquid medicine flows into the first dispersion area, it is divided into multiple streams by multiple flow splitting elements arranged at intervals in sequence, and flows continuously through the first flow gap. When the volume of the flow splitting element gradually increases along the direction from the inlet to the outlet, and the first flow gap gradually decreases along the direction from the inlet to the outlet, the high-speed flowing liquid medicine passes through the gradually narrowing flow gap, and the kinetic energy of the liquid medicine will increase significantly, thereby greatly increasing the flow rate of the liquid medicine.

[0024] The reversing element primarily functions to reverse the flow of the liquid medicine. This reverse-flowing liquid collides with the forward-flowing liquid, creating turbulence that increases mixing and momentum transfer, further enhancing the liquid's kinetic energy and thus increasing its flow rate. Simultaneously, this interaction promotes dispersion, helping to form finer fluid particles for a more uniform spray pattern and optimized spray performance. When the volume of the reversing element gradually increases from the inlet to the outlet, causing the second flow gap to gradually decrease, the high-speed liquid medicine passes through the narrowing gap, further increasing its kinetic energy and thus its flow rate.

[0025] Furthermore, the diversion and recirculation components are alternately arranged along the direction from the inlet to the outlet. This alternating distribution structure constitutes a cyclical process of "diversion → acceleration → recirculation collision → re-diversion → re-acceleration → re-recirculation collision". Specifically, the liquid is first divided into multiple streams by the diversion component to obtain higher kinetic energy. Then, the liquid flows through the recirculation component and generates reverse flow under the guidance of the recirculation component. It collides with the forward-flowing liquid to form turbulence, refines the droplets, further increases the kinetic energy of the liquid, and makes the droplet size more uniform. The liquid after the collision then flows through the next diversion component, is divided again, and accelerates in the narrowing gap. The above process is repeated, and finally the sprayed liquid forms more uniform atomized particles.

[0026] In summary, the nozzle of this application significantly improves the atomization effect of the liquid medicine and effectively enhances the absorption rate of the drug through a gradually narrowing flow gap and a cyclic process of "splitting → acceleration → backflow collision → re-splitting → re-acceleration → re-backflow collision". Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the internal structure of the liquid passage in a specific embodiment of the nozzle provided in this application;

[0028] Figure 2 A schematic diagram of the pump body assembly of a sprayer provided in this application is shown in a specific embodiment.

[0029] Figure 3 for Figure 2 A schematic diagram of the nozzle body in the pump assembly;

[0030] Figure 4 for Figure 3 A partial sectional view of the nozzle body;

[0031] Figure 5 for Figure 2 A partial cross-sectional view of the first stop block in the pump body assembly;

[0032] Figure 6 for Figure 2 A schematic diagram of the elastic protective component in the pump body assembly;

[0033] Figure 7 for Figure 6 A schematic diagram of the second angle of the elastic protective component;

[0034] Figure 8 for Figure 2 A schematic diagram of the structure of the gasket, elastic protective component, and nozzle in the pump body assembly;

[0035] Figure 9 for Figure 2 Enlarged view of region A in the middle;

[0036] Figure 10 This is a schematic diagram of the upper shell of the sprayer provided in this application;

[0037] The reference numerals in the attached figures are as follows:

[0038] 1-Pump body assembly;

[0039] 10-Nozzle; 100-Inlet; 101-Outlet; 102-Passage channel; 102-1-First dispersion zone; 102-2-Second dispersion zone; 103-Flow divider assembly; 103'-First flow divider assembly; 103-1-Flow divider element; 103-11-Flow divider arc; 103-12-Drawing angle; 104-Return assembly; 104'-First return assembly; 104-1-Return element; 104-11-Return arc; 104-12-Flow divider angle; 104-13-Drawing arc; 105-First dispersion column; 106-Second dispersion column; 107-Third dispersion column; d1-First flow gap; d2-Second flow gap;

[0040] 11- Nozzle body; 111- First receiving groove; 112- Third receiving groove; 113- Through hole; 114- Support wing; 115- Limiting protrusion; 116- Outer ring;

[0041] 12-First stop block; 121-Second receiving groove; 122-Annular protrusion; 123-Fourth receiving groove; 13-First sealing ring; 14-Second stop block; 15-Second sealing ring; 16-First fixing sleeve; 17-Pipe fitting; 18-Elastic protective element; 181-Straight wall portion; 182-Inclined wall portion; 18a-Mounting hole; 18b-Allowing groove; 19-Metal nozzle; 110-Second fixing sleeve; 1-11-Gasket; 1-11a-Allowing hole; 1-12-Filter element; a-Sealing groove; b-Rib; c-Cavity;

[0042] 2-Upper shell; 21-Mounting sleeve; 211-Recessed part; 212-Limiting groove. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0045] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0046] In this description, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0047] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the internal structure of the liquid passage in a specific embodiment of the nozzle provided in this application.

[0048] This application provides a nozzle 10, which has a liquid inlet 100, a liquid outlet 101, and a liquid passage 102 connecting the liquid inlet 100 and the liquid outlet 101. The liquid passage 102 includes a first dispersion region 102-1, and a flow diversion component 103 and a return flow component 104 are disposed inside the first dispersion region 102-1. Along the direction from the liquid inlet 100 to the liquid outlet 101, the flow diversion component 103 and the return flow component 104 are arranged alternately in sequence, and the first one is the flow diversion component 103.

[0049] The diversion assembly 103 includes multiple diversion elements 103-1, and the return assembly 104 includes multiple return elements 104-1. In the direction perpendicular to the direction from the inlet 100 to the outlet 101, the multiple diversion elements 103-1 in the same diversion assembly 103 are arranged at intervals in sequence, and the multiple return elements 104-1 in the same return assembly 104 are arranged at intervals in sequence. The diversion elements 103-1 in the diversion assembly 103 and the return elements 104-1 in the adjacent return assembly 104 are arranged alternately.

[0050] The gap between two adjacent diverting elements 103-1 in the same diverting assembly 103 is the first flow gap d1, and the gap between two adjacent return elements 104-1 in the same return assembly 104 is the second flow gap d2. The volume of at least one of the diverting element 103-1 and the return element 104-1 gradually increases along the direction from the inlet 100 to the outlet 101, so that at least one of the first flow gap d1 and the second flow gap d2 gradually decreases along the direction from the inlet 100 to the outlet 101.

[0051] In the nozzle 10 of this application embodiment, a flow-diverting component 103 and a flow-returning component 104 are disposed inside the first dispersion region 102-1. Along the direction from the inlet 100 to the outlet 101, the flow-diverting component 103 and the flow-returning component 104 are alternately arranged, with the flow-diverting component 103 being the first. The flow-diverting component 103 mainly functions to divert the flow, such as... Figure 1 As shown, the flow divider 103-1 has a flow divider arc 103-11 on the side facing the inlet 100. The flow divider arc 103-11 can better guide the liquid, so that when the liquid flows into the first dispersion area 102-1, it is divided into multiple streams by multiple flow dividers 103-1 arranged at intervals. The streams flow continuously through the first flow gap d1, reducing the direct impact between the liquid and the channel wall, thereby reducing the energy loss caused by friction and impact, and allowing the liquid to accelerate more smoothly and maintain a high flow rate.

[0052] Meanwhile, as the volume of the diverter 103-1 gradually increases along the direction from the inlet 100 to the outlet 101, causing the first flow gap d1 to gradually decrease along the direction from the inlet 100 to the outlet 101, the high-speed flowing liquid passes through the gradually narrowing flow gap, and the kinetic energy of the liquid will increase significantly, thereby greatly increasing the flow rate of the liquid, so that the atomized particles of the liquid sprayed by the nozzle 10 are more uniform and the atomization effect is improved.

[0053] The return component 104-1 mainly serves a return function, such as... Figure 1 As shown, the reversing component 104-1 has a reversing arc 104-11 on the side facing the liquid inlet 100. The reversing arc 104-11 enables the liquid to flow in the opposite direction. The liquid flowing in the opposite direction will collide with the liquid flowing in the forward direction. This interaction between the reverse flow and the forward flow will generate turbulence, increase the mixing and momentum transfer of the liquid, further increase the kinetic energy of the liquid, and thus further increase the flow rate of the liquid. At the same time, the interaction between the reverse flow and the forward flow will also promote the dispersion of the liquid, which helps to form finer fluid particles, so that the liquid can have a more uniform morphological distribution when sprayed, thus optimizing the spraying effect.

[0054] When the volume of the return flow element 104-1 gradually increases along the direction from the inlet 100 to the outlet 101, and the second flow gap d2 gradually decreases along the direction from the inlet 100 to the outlet 101, the high-speed flowing liquid passes through the gradually narrowing flow gap, and the kinetic energy of the liquid will further increase, thereby further increasing the flow rate of the liquid, so that the atomized particles of the liquid sprayed by the nozzle 10 are more uniform, and the atomization effect is further improved.

[0055] Furthermore, along the direction from the inlet 100 to the outlet 101, the diversion component 103 and the return component 104 are alternately arranged in sequence. This alternating distribution structure constitutes a cyclic process of "diversion → acceleration → return collision → re-diversion → re-acceleration → re-return collision". Specifically, the liquid is first divided into multiple streams by the diversion component 103 to obtain higher kinetic energy. Subsequently, the liquid flows through the return component 104 and generates reverse flow under the guidance of the return component 104-1. It collides with the forward-flowing liquid to form turbulence and refine the droplets, further increasing the kinetic energy of the liquid and making the droplet size more uniform. The liquid after the collision then flows through the next diversion component 103, is divided again, and accelerates in the narrowing gap, repeating the above process, ultimately making the sprayed liquid form more uniform atomized particles.

[0056] In summary, the nozzle 10 of this application significantly improves the atomization effect of the liquid medicine and effectively increases the absorption rate of the drug through the gradually narrowing flow gap and the cyclic process of "splitting → acceleration → backflow collision → re-splitting → re-acceleration → re-backflow collision".

[0057] Please continue to refer to this. Figure 1 In this embodiment, the reflux member 104-1 has a flow-dividing angle 104-12 on the side facing the inlet 100, and the reflux arc 104-11 is located on both sides of the flow-dividing angle 104-12. The flow-dividing angle 104-12 serves as a sharp-angled structure of the reflux member 104-1 facing the fluid. When the liquid flows into the reflux member 104-1 from the inlet 100 and contacts the reflux member 104-1, the flow-dividing angle 104-12 can divert the liquid to both sides, reducing the impact between the liquid and the reflux member 104-1 and reducing local energy loss. At the same time, the tilt angle of the flow-dividing angle 104-12 can guide the liquid to flow towards the reflux arc 104-11, so as to guide the liquid to form a local counterflow, increase the kinetic energy of the liquid, and thus increase the flow rate of the liquid.

[0058] In this embodiment, the diverter 103-1 has a diversion angle 103-12 on the side facing away from the inlet 100, and the return flow member 104-1 has a diversion arc 104-13 on the side facing away from the inlet 100. The diversion angle 103-12 and the diversion arc 104-13 can better guide the flow of the liquid during the flow of the liquid, making the flow of the liquid smoother.

[0059] from Figure 1 As can be seen from the embodiments of this application, the diversion component 103-1 and the return component 104-1 have the same structure and are arranged in opposite directions, so that one mainly plays the role of diversion and the other mainly plays the role of return.

[0060] Please continue to refer to this. Figure 1 In this embodiment of the application, the volume of the diverter 103-1 gradually increases along the direction from the inlet 100 to the outlet 101. Except for the reflux assembly 104 near the end of the outlet 101, the volume of the reflux assembly 104-1 in the other reflux assemblies 104 gradually increases along the direction from the inlet 100 to the outlet 101.

[0061] As set up above, the first flow gap d1 gradually decreases along the direction from the inlet 100 to the outlet 101. Except for the backflow component 104 near the end of the outlet 101, the second flow gap d2 also gradually decreases along the direction from the inlet 100 to the outlet 101. The liquid can significantly increase the flow rate and improve the atomization effect by passing through the gradually narrowing first flow gap d1 and second flow gap d2.

[0062] Please continue to refer to this. Figure 1 In this embodiment of the application, the portion of the reflux component 104 near the outlet 101 is the first reflux component 104', and the diversion component 103 located on the side of the first reflux component 104' near the outlet 101 and adjacent to the first reflux component 104' is the first diversion component 103'.

[0063] A first dispersion column 105 is provided between the first reflux component 104' and the first diversion component 103', and the volume of the first dispersion column 105 gradually increases along the direction close to the liquid outlet 101.

[0064] As configured above, the first dispersion column 105 is located in a region near the outlet 101 and between the first backflow component 104' and the first diversion component 103'. The first dispersion column 105 can assist the first diversion component 103' in diverting the liquid to both sides, preventing the liquid from concentrating in the transverse middle of the liquid passage 102, and allowing the liquid to be dispersed to a wider area in the transverse direction. Along the direction near the outlet 101, the volume of the first dispersion column 105 gradually increases, and the diversion effect of the first dispersion column 105 gradually strengthens, improving the uniformity of the liquid flow and allowing the liquid to enter the second dispersion region 102-2 more evenly, thereby improving the atomization effect when the liquid is sprayed.

[0065] The horizontal direction mentioned here refers to the direction perpendicular to the direction from the inlet 100 to the outlet 101.

[0066] Depend on Figure 1As can be seen, in the embodiments of this application, a portion of the first dispersion column 105 is located between any return flow member 104-1 and two adjacent diversion members 103-1; a portion of the first dispersion column 105 is located between any diversion member 103-1 and two adjacent return flow members 104-1.

[0067] The first dispersion column 105 located between any reflux member 104-1 and two adjacent diversion members 103-1 is defined as dispersion column A, and the first dispersion column 105 located between any diversion member 103-1 and two adjacent reflux members 104-1 is defined as dispersion column B. Dispersion columns A and B are alternately arranged in the direction perpendicular to the direction from the inlet 100 to the outlet 101. Both dispersion columns A and B can play a diversion role, so that the liquid medicine is dispersed and flows to both sides, thereby improving the flow uniformity of the liquid medicine.

[0068] Please continue to refer to this. Figure 1 In this embodiment of the application, the diverter 103-1 has a diversion angle 103-12 facing the liquid outlet 101. In the return assembly 104 near the end of the liquid outlet 101, a plurality of second dispersion columns 106 are arranged between two adjacent return components 104-1, and the plurality of second dispersion columns 106 are located on both sides of the corresponding diversion angle 103-12.

[0069] As configured above, the diverting member 103-1 has a pointed angle 103-12 facing the outlet 101. The diverting angle 103-12 guides the liquid, allowing it to flow smoothly along the inclined wall of the diverting angle 103-12. Multiple second dispersion columns 106 are arranged between two adjacent return members 104-1. The multiple second dispersion columns 106 are located on both sides of the corresponding diverting angle 103-12. The second dispersion columns 106 can further divert the liquid, allowing it to flow to both sides and further improving the uniformity of the liquid flow.

[0070] In this embodiment of the application, the liquid passage 102 further includes a second dispersion region 102-2, which is closer to the liquid outlet 101 than the first dispersion region 102-1.

[0071] The second dispersion region 102-2 is uniformly arranged with multiple third dispersion columns 107. The gap between two adjacent third dispersion columns 107 is the third diversion gap, which gradually decreases along the direction from the inlet 100 to the outlet 101.

[0072] As set up above, the third split gap gradually decreases along the direction from the inlet 100 to the outlet 101. At the end of the second dispersion region 102-2 near the first dispersion region 102-1, the third split gap is relatively large. On the one hand, this adapts to the split state when the liquid flows out of the first dispersion region 102-1, playing a transitional role and avoiding the uneven phenomenon of a sudden change in the split gap causing a surge in flow velocity in some channels and a slow flow velocity in others. On the other hand, it also avoids large-area blockage of the channels caused by impurities in the liquid due to an excessively small split gap. As the liquid gradually approaches the outlet 101, the third split gap gradually decreases. The narrower split gap can form a finer division of the liquid, making the flow rate and velocity in each channel more consistent and improving the atomization effect when the liquid is sprayed out.

[0073] Depend on Figure 1 It can be seen that the volume of the third dispersion column 107 gradually increases along the direction from the inlet 100 to the outlet 101, and the number of the third dispersion columns 107 gradually increases along the direction from the inlet 100 to the outlet 101, which causes the third flow divider gap to gradually decrease.

[0074] Please refer to Figure 2 , Figure 2 This is a schematic diagram of a specific embodiment of the pump body assembly of the sprayer provided in this application.

[0075] This application embodiment also provides a pump body assembly 1 for a sprayer, including the aforementioned nozzle 10.

[0076] The pump assembly 1 of the sprayer in this embodiment includes the aforementioned nozzle 10, and therefore has the same technical effects as the aforementioned nozzle 10, which will not be repeated here.

[0077] Please refer to Figures 2-5 , Figure 3 for Figure 2 A schematic diagram of the nozzle body in the pump assembly; Figure 4 for Figure 3 A partial sectional view of the nozzle body; Figure 5 for Figure 2 A partial cross-sectional view of the first stop block in the pump body assembly.

[0078] The pump assembly 1 in this embodiment of the application also includes:

[0079] Nozzle body 11, nozzle body 11 having a first receiving groove 111;

[0080] The first stop block 12 is installed in the first receiving groove 111. The first stop block 12 has a second receiving groove 121. The nozzle 10 is partially installed in the second receiving groove 121. The axially opposite end walls of the first stop block 12 and the nozzle body 11 are respectively provided with sealing grooves a. The axially opposite end walls of the two sealing grooves a are provided with ribs b.

[0081] The first sealing ring 13 is installed inside the two sealing grooves a, and the axial end walls of the first sealing ring 13 abut against the corresponding ribs b.

[0082] As configured above, the rib b, as a raised structure set on the axially opposite end walls of the two sealing grooves a, can reduce the contact area with the first sealing ring 13, and under the same axial pressure, make the first sealing ring 13 undergo more elastic deformation, so that the first sealing ring 13 and the rib 6 fit more tightly, improve sealing reliability, and reduce leakage risk.

[0083] Depend on Figure 4 and Figure 5 As can be seen from the embodiments of this application, two ribs b are provided on the axially opposite end walls of the two sealing grooves a, thereby forming two seals between the axially opposite end walls of the first stop block 12 and the nozzle body 11, further improving the sealing reliability and reducing the risk of leakage.

[0084] In some other embodiments of this application, at least one rib b is provided on the axially opposite end walls of the two sealing grooves a.

[0085] Please continue to refer to this. Figure 4 In this embodiment, the nozzle body 11 is further provided with a third receiving groove 112 at the end away from the first receiving groove 111, and the pump body assembly 1 also includes a second stop block 14, a second sealing ring 15, and a first fixing sleeve 16, wherein:

[0086] The second stop block 14 is partially installed in the third receiving groove 112. The second stop block 14 has a stepped wall facing the nozzle body 11. The stepped wall and the end wall of the nozzle body 11 abut against each other. The end wall of the second stop block 14 located inside the third receiving groove 112 is defined as the inner end wall.

[0087] The second sealing ring 15 is axially pressed between the end wall of the third receiving groove 112 and the inner end wall of the second stop block 14, ensuring a reliable seal between the nozzle body 11 and the second stop block 14 and reducing the risk of leakage.

[0088] The first fixing sleeve 16 is partially fitted onto the outer periphery of the end of the nozzle body 11 and is threadedly connected to the nozzle body 11. The end wall of the second stop block 14 facing away from the nozzle body 11 abuts against the inner end wall of the first fixing sleeve 16. In this way, the first fixing sleeve 16 limits the second stop block 14, ensuring the reliable installation position of the second stop block 14. At the same time, the first fixing sleeve 16 can also compress the second sealing ring 15 through the second stop block 14, so that the end wall forming the third receiving groove 112 and the inner end wall of the second stop block 14 can reliably fit against the second sealing ring 15, improving the sealing effect.

[0089] like Figure 4 As shown in the embodiment of this application, the nozzle body 11 is also provided with a through hole 113 extending along the axial direction. The through hole 113 connects the first receiving groove 111 and the third receiving groove 112. The through hole 113 is used to install the pipe fitting 17.

[0090] Please refer to Figure 2 and Figure 6 , Figure 6 for Figure 2 A schematic diagram of the elastic protective component in the pump body assembly.

[0091] In this embodiment, the pump body assembly 1 of the sprayer further includes an elastic protective member 18. The elastic protective member 18 has an axially through mounting hole 18a. The nozzle 10 is partially inserted into the mounting hole 18a. The elastic protective member 18 is made of a material that can produce elastic deformation, such as silicone, to provide elastic buffering for the nozzle 10. The assembled part of the nozzle 10 and the elastic protective member 18 is installed in the second receiving groove 121.

[0092] Please continue to refer to this. Figure 6 In this embodiment of the application, the inner wall surrounding the mounting hole 18a includes a straight wall portion 181 and an inclined wall portion 182. The straight wall portion 181 fits against the outer wall of the nozzle 10, providing support and limiting for the nozzle 10. The inclined wall portion 182 extends outward in a direction away from the straight wall portion 181, thereby gradually increasing the cross-sectional area of ​​the mounting hole 18a, which facilitates the assembly of the nozzle 10.

[0093] Please continue to refer to this. Figure 2In this embodiment, the pump body assembly 1 further includes a metal nozzle 19 and a second fixing sleeve 110. The metal nozzle 19 is partially inserted into the second receiving groove 121 and located on the outer periphery of the elastic protective member 18. The metal nozzle 19 has a stepped wall facing the nozzle body 11, and the stepped wall abuts against the end wall of the nozzle body 11. The second fixing sleeve 110 is partially fitted onto the outer periphery of the end of the nozzle body 11 and is threadedly connected to the nozzle body 11. The end wall of the metal nozzle 19 facing away from the nozzle body 11 abuts against the inner end wall of the second fixing sleeve 110. Thus, the second fixing sleeve 110 serves to limit the metal nozzle 19, ensuring that the installation position of the metal nozzle 19 is reliable. At the same time, the second fixing sleeve 110 can also compress the elastic protective member 18 through the metal nozzle 19, so that the elastic protective member 18 is in a compressed state, thereby providing buffer protection for the nozzle 10.

[0094] Please refer to Figure 2 and Figure 7 , Figure 7 for Figure 6 A schematic diagram of the second angle of the elastic protective component.

[0095] Since the elastic protective element 18 is in a compressed state after installation, it will inevitably undergo elastic deformation. Therefore, in this embodiment, the end wall of the elastic protective element 18 facing the metal nozzle 19 is provided with a relief groove 18b, which is connected to the mounting hole 18a. The relief groove 18b is used to provide deformation space to accommodate the deformed part of the elastic protective element 18, so as to avoid the sealing effect being weakened or the spraying function being damaged due to insufficient deformation space.

[0096] Meanwhile, in this embodiment, the nozzle 10 includes a nozzle back plate and a nozzle main plate, which together form the aforementioned liquid passage 102. The nozzle main plate is made of glass, and the nozzle back plate is made of silicon wafer. The edges of the nozzle 10 are relatively sharp. When the nozzle 10 is installed in the mounting hole 18a, debris may be generated. Therefore, the clearance groove 18b can also provide space for the debris, preventing the sealing effect from being weakened or the spray function from being damaged due to the debris.

[0097] Please refer to Figure 2 and Figure 8 , Figure 8 for Figure 2 A schematic diagram of the structure of the gasket, elastic protective component, and nozzle in the pump body assembly.

[0098] In this embodiment of the application, the pump body assembly 1 further includes a gasket 1-11, which is partially sandwiched between the opposite end walls of the nozzle 10 and the metal nozzle 19 to protect the end of the nozzle 10 and prevent the nozzle 10 from being crushed by the metal nozzle 19.

[0099] The gasket 1-11 has a clearance hole 1-11a to avoid interference with the flow of the liquid.

[0100] Please refer to Figure 5 and Figure 9 , Figure 9 for Figure 2 A magnified view of region A in the middle.

[0101] In this embodiment, the end wall forming the second receiving groove 121 has an annular protrusion 122. In the installed state, the end wall of the elastic protective member 18 abuts against the annular protrusion 122, allowing the elastic protective member 18 to undergo more complete elastic deformation under the pressure of the metal nozzle 19. This results in a tighter fit between the elastic protective member 18 and the annular protrusion 122, improving sealing reliability and reducing the risk of leakage. Simultaneously, a cavity c is formed inside the annular protrusion 122 and between the end wall forming the second receiving groove 121 and the opposite end wall of the nozzle 10. This allows the liquid to first enter the cavity c and then fully enter the interior of the nozzle 10 from all the inlets 100, improving the uniformity of the liquid entering the nozzle 10.

[0102] like Figure 5 and Figure 9 As shown in the embodiment of this application, the first stop block 12 also has a fourth receiving groove 123 for installing filter elements 1-12. The filter elements 1-12 are located at the liquid inlet end of the nozzle 10 and are used to filter the liquid medicine about to enter the nozzle 10, effectively filtering impurities in the liquid medicine and minimizing the entry of particulate matter into the liquid passage 102 of the nozzle 10, which would affect the normal operation of the sprayer.

[0103] This application embodiment also provides a sprayer, including the aforementioned sprayer pump body assembly 1.

[0104] The sprayer of this application embodiment includes the aforementioned sprayer pump assembly 1, and therefore has the same technical effects as the aforementioned sprayer pump assembly 1, which will not be repeated here.

[0105] Please continue to refer to this. Figure 3 and Figure 10 , Figure 10 This is a schematic diagram of the upper shell of the sprayer provided in this application.

[0106] In this embodiment, the outer wall of the nozzle body 11 is provided with a support wing 114, and the upper shell 2 of the sprayer has a mounting sleeve 21 for partially mounting the pump body assembly 1. The inner wall of the mounting sleeve 21 has a recess 211, which penetrates one end wall of the mounting sleeve 21. The support wing 114 is partially inserted into the recess 211 to limit the movement of the pump body assembly 1.

[0107] The outer wall of the nozzle body 11 also has a limiting protrusion 115, and the wall of the mounting sleeve 21 has a limiting groove 212. The limiting groove 212 passes through one end wall of the mounting sleeve 21 and through the inner and outer walls of the mounting sleeve 21. The limiting protrusion 115 is inserted into the corresponding limiting groove 212 in the circumferential direction, which also plays a circumferential limiting role, ensuring that the nozzle body 11 and the mounting sleeve 21 are reliably circumferentially limited.

[0108] like Figure 3 and Figure 4 As shown in the embodiment of this application, the outer wall of the nozzle body 11 is also provided with an outer ring portion 116. Before the pump body assembly 1 is installed on the upper shell 2, the other structures except the second fixing sleeve 110 are assembled into a whole. The whole is passed through the mounting sleeve 21 from bottom to top. The upper side wall of the outer ring portion 116 abuts against the lower end wall of the mounting sleeve 21. Then the second fixing sleeve 110 is connected to the nozzle body 11. In the installed state, the end wall of the open end of the second fixing sleeve 110 abuts against the upper end wall of the mounting sleeve 21, thereby fixing the pump body assembly 1 and the upper shell 2.

[0109] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A nozzle, characterized in that, The nozzle (10) has an inlet (100), an outlet (101), and a liquid passage (102) connecting the inlet (100) and the outlet (101). The liquid passage (102) includes a first dispersion region (102-1). The first dispersion region (102-1) is provided with a flow-dividing component (103) and a return flow component (104). Along the direction from the inlet (100) to the outlet (101), the flow-dividing component (103) and the return flow component (104) are arranged alternately in sequence, and the first one is the flow-dividing component (103). The diversion assembly (103) includes multiple diversion elements (103-1), and the return assembly (104) includes multiple return elements (104-1). In the direction perpendicular to the direction from the inlet (100) to the outlet (101), multiple diversion elements (103-1) in the same diversion assembly (103) are arranged alternately in sequence, and multiple return elements (104-1) in the same return assembly (104) are arranged alternately in sequence. The diversion elements (103-1) in the diversion assembly (103) and the return elements (104-1) in the adjacent return assembly (104) are arranged alternately. The gap between two adjacent flow dividers (103-1) in the same flow divider assembly (103) is the first flow gap (d1), and the gap between two adjacent return flow members (104-1) in the same return flow assembly (104) is the second flow gap (d2). The volume of at least one of the flow divider (103-1) and the return flow member (104-1) gradually increases along the direction from the inlet (100) to the outlet (101), so that at least one of the first flow gap (d1) and the second flow gap (d2) gradually decreases along the direction from the inlet (100) to the outlet (101). The volume of the diverter (103-1) gradually increases along the direction from the inlet (100) to the outlet (101). Except for the return assembly (104) near the end of the outlet (101), the volume of the return assembly (104-1) in the other return assemblies (104) gradually increases along the direction from the inlet (100) to the outlet (101). The portion of the reflux assembly (104) near the outlet (101) is the first reflux assembly (104'), and the diversion assembly (103) located on the side of the first reflux assembly (104') near the outlet (101) and adjacent to the first reflux assembly (104') is the first diversion assembly (103'). A first dispersing column (105) is provided between the first reflux component (104') and the first diversion component (103'), and the volume of the first dispersing column (105) gradually increases along the direction close to the liquid outlet (101); A portion of the first dispersion column (105) is located between any of the backflow members (104-1) and the two adjacent flow dividers (103-1); a portion of the first dispersion column (105) is located between any of the flow dividers (103-1) and the two adjacent backflow members (104-1).

2. The nozzle according to claim 1, characterized in that, The diverting member (103-1) has a diversion angle (103-12) facing the outlet (101). In the return assembly (104) near the end of the outlet (101), a plurality of second dispersion columns (106) are arranged between two adjacent return members (104-1), and the plurality of second dispersion columns (106) are located on both sides of the diversion angle (103-12).

3. The nozzle according to any one of claims 1-2, characterized in that, The liquid passage (102) further includes a second dispersion region (102-2), which is closer to the liquid outlet (101) than the first dispersion region (102-1). The interior of the second dispersion region (102-2) is uniformly arranged with a plurality of third dispersion columns (107). The gap between two adjacent third dispersion columns (107) is a third diversion gap in the direction perpendicular to the direction from the liquid inlet (100) to the liquid outlet (101). The third diversion gap gradually decreases in the direction from the liquid inlet (100) to the liquid outlet (101).

4. A pump assembly for a sprayer, characterized in that, Includes the nozzle (10) as described in any one of claims 1-3.

5. The pump body assembly according to claim 4, characterized in that, The pump assembly (1) also includes: The nozzle body (11) has a first receiving groove (111). The first stop block (12) is installed in the first receiving groove (111). The first stop block (12) has a second receiving groove (121). The nozzle (10) is partially installed in the second receiving groove (121). The axially opposite end walls of the first stop block (12) and the nozzle body (11) are respectively provided with sealing grooves (a). The axially opposite end walls of the two sealing grooves (a) are provided with ribs (b). The first sealing ring (13) is installed inside the two sealing grooves (a), and the axial end walls of the first sealing ring (13) abut against the corresponding ribs (b).

6. A sprayer, characterized in that, Includes the pump body assembly (1) of the sprayer as described in claim 4 or 5.

7. The sprayer according to claim 6, characterized in that, The sprayer also includes a mounting sleeve (21) for partially mounting the pump body assembly (1). In the pump body assembly (1), the outer wall of the nozzle body (11) has a limiting protrusion (115), and the wall of the mounting sleeve (21) has a limiting groove (212). The limiting groove (212) penetrates one end wall of the mounting sleeve (21) and penetrates the inner and outer walls of the mounting sleeve (21). The limiting protrusion (115) is circumferentially limited and inserted into the corresponding limiting groove (212).

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