Adaptive atomizing tip and multi-union syringe assembly

Abstract

This application proposes an adaptive atomizing nozzle and a multi-injector assembly. The adaptive atomizing nozzle is used in conjunction with the injector and includes: a nozzle body having a liquid channel and a core cavity, the end of which is connected to the core cavity; a liquid conduit connected to the inlet of the liquid channel, the liquid conduit being an elastic tube; and a squeezing member movably connected to the nozzle body and connected to the injector's operating rod. Pushing the injector's operating rod causes the squeezing member to move, and the squeezing member can deform the liquid conduit, thereby achieving adaptive adjustment of the liquid flow rate.

Description

Technical Field

[0001] This application relates to an adaptive atomizing nozzle and a multi-injector assembly. Background Technology

[0002] Liquid atomization is the process of processing a liquid into tiny droplets through a suitable device and then spraying it out in a mist. With the advancement of science and technology and the development of modern industry, atomization technology has become an important and practical technology, widely used in many engineering fields and daily life, such as agricultural spraying, industrial dust removal, high-efficiency combustion, medical drug delivery, film sealing and sealing for leak prevention, etc.

[0003] The atomizing nozzle is the core component of an atomizing device, playing a decisive role in the atomization effect of liquids. The medical field is an important application area for two-component atomizing nozzles.

[0004] like Figure 1 As shown, a possible two-component crosslinking atomizing nozzle includes a first liquid channel 13 and a second liquid channel 14. The original components in the two channels are mixed and crosslinked, then ejected through a narrow orifice. Because the mixed liquid is subjected to high pressure inside the nozzle, the pressure drops sharply after exiting the orifice, allowing the liquid to diffuse into a mist. This nozzle has a simple structure, is highly efficient in production, and is inexpensive, making it suitable for large-scale production and application.

[0005] However, its clinical use has also revealed the following shortcomings:

[0006] 1. Unstable atomization effect. Different people using different speeds to push the liquid will produce different atomization effects. A faster pushing speed results in a larger volume of liquid being sprayed, while a slower pushing speed results in a smaller volume of liquid being sprayed.

[0007] 2. The resistance when pushing the liquid is relatively large. Because the above-mentioned atomizing nozzle relies on the spraying of high-pressure liquid to form a mist, it is necessary to provide a certain pressure to the liquid, which is inconvenient for users with less hand strength to use.

[0008] 3. It has low applicability to cross-linked viscous liquids, easily clogging the nozzle and making multiple start-stop cycles impossible. Cross-linked liquids are usually composed of two components, A and B, which are stored separately. After mixing and cross-linking, they become viscous liquids. During use, once the mixed liquid is stopped from being dispensed, it easily solidifies and clogs the narrow flow channels inside the nozzle. Summary of the Invention

[0009] This application aims to provide an adaptive atomizing nozzle that addresses at least one deficiency of the prior art. This application also proposes a multi-injector assembly including the adaptive atomizing nozzle.

[0010] This application provides an adaptive atomizing nozzle for use with a syringe, the adaptive atomizing nozzle comprising:

[0011] The nozzle body is provided with a liquid channel and a core cavity, and the end of the liquid channel is connected to the core cavity;

[0012] A liquid feed pipe, which is connected to the inlet of the liquid feed channel, and the liquid feed pipe is an elastic pipe;

[0013] An extrusion member is movably connected to the nozzle body and connected to the operating rod of the syringe. Pushing the operating rod of the syringe can drive the extrusion member to move, and the extrusion member can deform the liquid pipeline.

[0014] In at least one possible implementation, the nozzle body is provided with a blocking portion, and the blocking portion and the extrusion member are located on both sides of the liquid pipeline.

[0015] In at least one possible implementation, the adaptive atomizing nozzle further includes a return spring configured to cause the extruder to tend to move axially away from the nozzle body.

[0016] The return spring has a first state and a second state. When the return spring is in the first state, the extruder deforms the liquid pipeline.

[0017] When the reset spring is in the second state, the squeezing member does not squeeze the liquid pipe.

[0018] The deformation of the return spring in the first state is greater than the deformation of the return spring in the second state.

[0019] In at least one possible implementation, the nozzle body is provided with a gas channel, the end of which converges with the end of the liquid channel. Preferably, at least the last segment of the gas channel is inclined relative to the axial direction, and at least the last segment of the liquid channel is parallel to the axial direction.

[0020] In at least one possible implementation, the adaptive atomizing nozzle further includes an adjustment ring having a central hole, the end of the liquid channel corresponding to the central hole, allowing the liquid to pass through the adjustment ring from the central hole.

[0021] In at least one possible implementation, the adjusting ring is connected to the extruder, so that the adjusting ring can move with the extruder, thereby changing the degree to which the adjusting ring obstructs the gas passage.

[0022] In at least one possible implementation, when the extruder deforms the liquid pipe, the obstruction of the gas passage by the adjusting ring is less than when the extruder does not deform the liquid pipe.

[0023] In at least one possible implementation, an axially extending airflow groove is provided between the adjusting ring and the axial cavity, the airflow groove being connected to the gas passage.

[0024] The embodiments of this application also propose a multi-injector assembly, which includes the adaptive atomizing nozzle, the syringe, and the connecting assembly as described in any of the above technical solutions, wherein the extrusion member and the operating rod of the syringe are connected by the connecting assembly.

[0025] In at least one possible implementation, the connecting assembly includes an active connecting cylinder and a driven connecting cylinder.

[0026] The driven connecting cylinder includes a driven connecting cylinder piston. The cylinder body of the driving connecting cylinder and the cylinder body of the driven connecting cylinder are connected. The driven connecting cylinder piston is fixedly connected to the extrusion member. Pressing the operating rod of the driving connecting cylinder can push the driven connecting cylinder piston to move, thereby driving the extrusion member.

[0027] Preferably, the driven connecting cylinder has a pressure relief hole on its cylinder wall.

[0028] By adopting the above technical solution, at least one of the following beneficial effects can be achieved.

[0029] 1. By extruding the liquid pipe with an extruder, the liquid flow rate can be adaptively adjusted regardless of whether the syringe is pushed with a strong force and a fast speed or with a weak force and a slow speed, thereby achieving uniform and stable coating thickness.

[0030] 2. The atomization effect is stable and uniform. When using different thrusts to push the syringe, the atomization effect can be stabilized by controlling the balance between the liquid flow rate and the airflow.

[0031] 3. Low pushing resistance: High-pressure gas is introduced through the gas channel to help atomize, so there is no need to generate high pressure by pushing the liquid, thus reducing the resistance to pushing the liquid.

[0032] 4. It is especially suitable for cross-linked pharmaceutical adhesives. The nozzle can be cleaned by high-pressure gas to avoid clogging of the nozzle after the cross-linked and cured adhesive. It can be started and stopped multiple times, so you can stop at any time during use to observe the spraying effect and then start again to continue spraying. Attached Figure Description

[0033] Figure 1A schematic diagram of a possible two-component crosslinked atomizing nozzle is shown.

[0034] Figure 2 A cross-sectional view of the feed channel of an adaptive atomizing nozzle according to an embodiment of this application is shown in an uncompressed state.

[0035] Figure 3 A cross-sectional view of the feed channel of an adaptive atomizing nozzle according to an embodiment of this application is shown in a compressed state.

[0036] Figure 4 A partial cross-sectional view of an adaptive atomizing nozzle according to an embodiment of this application is shown.

[0037] Figure 5 A schematic diagram of the structure of an adaptive atomizing nozzle connected to a syringe according to an embodiment of this application is shown.

[0038] Figure 6 It shows Figure 5 A magnified view of a portion of the image.

[0039] Explanation of reference numerals in the attached figures

[0040] 100 Adaptive atomizing nozzle; 200 Injector; 300 Active connecting tube; 301 Active connecting tube piston; 400 Driven connecting tube; 401 Driven connecting tube piston; 402 Pressure relief hole; 500 Connecting piece.

[0041] 1. Nozzle body; 11. First gas channel; 12. Second gas channel; 13. First liquid channel; 14. Second liquid channel; 15. Shaft cavity; 16. Baffle; 17. Spray nozzle.

[0042] 2 First feed pipe

[0043] 3 Second feed pipe

[0044] 4 Adjusting components 41 Adjusting ring connecting rod 42 Airflow groove 43 Center hole 49 Adjusting ring

[0045] 5 return springs

[0046] 6 Extruded parts, 61 large diameter section, 62 small diameter section

[0047] Axial axis Detailed Implementation

[0048] To more clearly illustrate the above-mentioned objectives, features, and advantages of this application, specific embodiments of this application are described in detail in conjunction with the accompanying drawings in this section. Besides the embodiments described in this section, this application can also be implemented in other different ways. Those skilled in the art can make corresponding improvements, modifications, and substitutions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed in this section. The scope of protection of this application should be determined by the claims.

[0049] In the following description, unless otherwise specified, axis A refers to the axis of the nozzle body 1.

[0050] like Figures 2 to 6 As shown, an embodiment of this application proposes an adaptive atomizing nozzle 100, which includes a nozzle body 1, a liquid conduit, an adjusting member 4, a return spring 5, and a pressing member 6. The pressing member 6 is movably connected to the nozzle body 1, the adjusting member 4 can be connected to the pressing member 6, and the return spring 5 is configured to cause the pressing member 6 to tend to move away from the nozzle body 1.

[0051] The nozzle body 1 includes a gas channel, a liquid channel, and a core cavity 15. In this embodiment, the gas channel includes a first gas channel 11 and a second gas channel 12. The liquid channel includes a first liquid channel 13 and a second liquid channel 14. The liquid conduit includes a first liquid conduit 2 and a second liquid conduit 3.

[0052] This application also proposes a multi-injector assembly, which includes an adaptive atomizing nozzle 100, an injector 200 and a connecting assembly. The extrusion member 6 of the adaptive atomizing nozzle 100 and the operating rod of the injector 200 can be connected by the connecting assembly, so that the extrusion member 6 can be moved when the operating rod of the injector 200 is pushed.

[0053] The adaptive atomizing nozzle of this application can adapt to multi-component colloids, such as components A and B stored separately, which are mixed into a colloid during use. The liquids of components A and B enter the nozzle body 1 from the first liquid pipe 2 and the second liquid pipe 3, respectively, and are mixed, cross-linked, atomized, and then sprayed onto the working surface.

[0054] The axial cavity 15 can be disposed within the nozzle body 1 along the axial direction A, and the axial cavity 15 is used to accommodate the adjusting component 4. The head end of the axial cavity 15 is connected to the mounting hole of the adjusting ring connecting rod, and the end end of the axial cavity 15 is connected to the spray nozzle 17 of the adaptive atomizing nozzle.

[0055] The upstream ends of the first gas channel 11, the second gas channel 12, the first liquid channel 13, and the second liquid channel 14 can form openings at the top of the nozzle body 1, and the downstream ends can be connected to the axial cavity 15.

[0056] At least the final section of the gas channel can be inclined relative to axis A, and at least the final section of the liquid channel can be parallel to axis A. The ends of the gas channel and the liquid channel can converge, for example, the ends of the first gas channel 11 and the first liquid channel 13 can converge, and the ends of the second gas channel 12 and the second liquid channel 14 can converge. Filtered high-pressure gas is introduced into the first gas channel 11 and the second gas channel 12. During use, high-pressure gas is continuously ejected from the ends of the gas channels. The high-pressure gas helps atomize the liquid and also continuously blows the liquid out of the nozzle, cleaning the nozzle and preventing the colloid from solidifying and clogging it.

[0057] like Figure 2 and Figure 3 As shown, the first liquid supply pipe 2 is connected to the inlet end of the first liquid supply channel 13, and the second liquid supply pipe 3 is connected to the inlet end of the second liquid supply channel 14. The nozzle body 1 may also be connected to a blocking part 16, which can be located outside the first liquid supply pipe 2 and the second liquid supply pipe 3. The blocking part 16 and the extruder 6 are located on both sides of the liquid supply pipe, and the blocking part 16 and the extruder 6 can jointly extrude the liquid supply pipe. The blocking part 16 can block the side of the liquid supply pipe when the extruder 6 extrudes the liquid supply pipe, preventing the liquid supply pipe from deforming as a whole. The extruder 6 located in the center can simultaneously apply pressure to multiple surrounding liquid supply pipes, causing deformation of the liquid supply pipes.

[0058] Both the first liquid supply pipe 2 and the second liquid supply pipe 3 can be made of elastic pipes, such as medical silicone tubing. Medical silicone tubing has good deformation characteristics and can be deformed when squeezed, so as to change the cross-sectional shape of the pipe and thus control the flow rate of the liquid being transported.

[0059] Adjusting component 4 may include adjusting ring 49 and adjusting ring connecting rod 41, one end of adjusting ring connecting rod 41 ( Figure 2 , Figure 3 The lower end) is connected to the adjusting ring 49, and the other end ( Figure 2 , Figure 3 The upper end of the ring 49 can be fixed together with the extruder 6 by threads, so that the adjusting ring 49 is connected to the extruder 6, and the adjusting ring 49 can move together with the extruder 6, thereby controlling the balance between the liquid flow rate and the air flow rate.

[0060] The adjusting ring 49 can be a cylindrical shape with a central hole 43, and an airflow groove 42 extending along the axial direction A can be formed on the outer peripheral surface of the adjusting ring 49. The airflow groove 42 can communicate with the first gas channel 11 and the second gas channel 12. It is understood that in other possible embodiments, the airflow groove 42 can be formed on the inner peripheral surface of the axial cavity 15, or neither the adjusting ring 49 nor the axial cavity 15 can have additional grooves, and the gap between the adjusting ring 49 and the axial cavity 15 can also serve as the airflow groove 42. The gas flowing out through the airflow groove 42 can control the spray range of the atomized droplets and prevent the droplets from adhering to the side wall of the spray nozzle 17. The outer diameter of the adjusting ring 49 can be smaller than the inner diameter of the spray nozzle 17, which can also prevent the sprayed droplets from adhering to the side wall of the spray nozzle 17.

[0061] The liquid feed channel is closer to the central cavity 15 than the gas channel. The inner diameter of the liquid feed channel can be smaller than the inner diameter of the regulating ring 49. After the liquid feed is ejected from the liquid feed channel, the pressure drops sharply, allowing it to diffuse into a mist, so that the liquid feed ejected from the liquid feed channel can be initially atomized in the central hole 43. The ends (outlet ends) of the first liquid feed channel 13 and the second liquid feed channel 14 correspond to the central hole 43 of the regulating ring 49, allowing the liquid feed to pass through the central hole 43 of the regulating ring 49 and be atomized and ejected. The ends (outlet ends) of the first gas channel 11 and the second gas channel 12 also correspond to the central hole 43, so that the gas can disperse and blow out the initially atomized droplets, preventing blockage of the central hole 43.

[0062] The end of the adjusting ring 49 near the gas passage forms a conical surface. The inclination angle of the conical surface and the gas passage can be the same, so that when the adjusting ring 49 is pressed forcefully against the extrusion piece 6 (refer to...), the adjustment ring 49... Figure 3 The gas passage can be left unobstructed. The pressure and velocity of the compressed gas entering the gas passage are constant, and the cross-sectional area of ​​the gas passage directly affects the gas flow rate.

[0063] When the extrusion part 6 is not pressed (refer to) Figure 2 When the adjusting ring 49 partially blocks the gas passage, the squeezing member 6 is pressed down with a weak force. The squeezing member 6 will not squeeze the first liquid pipe 2 and the second liquid pipe 3. The first liquid pipe 2 and the second liquid pipe 3 maintain their original shape. Although the weak pressing slows down the liquid delivery speed, the cross-section of the liquid pipe is at its maximum. At this time, the adjusting ring 49 does not move down or moves down only slightly, and still partially blocks the airflow passage, resulting in a small airflow.

[0064] When pressing down forcefully on the extruded part 6 (refer to...) Figure 3The extruder 6 presses the first liquid pipe 2 and the second liquid pipe 3 radially outward, causing deformation of the first liquid pipe 2 and the second liquid pipe 3. Although the strong pressing increases the speed of liquid delivery, the cross-section of the liquid pipes becomes smaller. At this time, the adjusting ring 49 moves down significantly, and the portion of the adjusting ring 49 blocking the ends of the first gas channel 11 and the second gas channel 12 is reduced or no longer obstructed, resulting in a larger gas flow rate.

[0065] With comprehensive adjustments to various aspects such as liquid flow rate, liquid flow rate, and air flow rate, the atomization effect of the liquid is basically stabilized, ensuring uniform coating thickness and stable atomization effect regardless of the operating force.

[0066] Furthermore, a return spring 5 can be provided between the extruder 6 and the nozzle body 1. The return spring 5 can be sleeved on the adjusting ring connecting rod 41. The return spring 5 is a compression spring, which causes the extruder 6 to tend to move upward along the axial direction A away from the nozzle body 1. The nozzle body 1 can be provided with a groove to accommodate the return spring 5. When the extruder 6 is pressed down forcefully, causing the adjusting ring 49 to move down to the bottom, after the pressing force is released, the return spring 5 can cause the pressed extruder 6 to return to its original position, thereby driving the adjusting ring 49 to return to its original position.

[0067] The return spring 5 has a first state and a second state. When the return spring 5 is in the first state, the extruder 6 extrudes and deforms the liquid pipe. When the return spring 5 is in the second state, the extruder 6 does not extrude and deform the liquid pipe. The amount of deformation (compression) of the return spring 5 in the first state is greater than the amount of deformation (compression) of the return spring 5 in the second state.

[0068] like Figure 2 As shown, when the squeezing member 6 is pressed down with a weak force, although it can be moved, it is insufficient to overcome the resistance of the return spring 5 and cause the spring to deform sufficiently. The stroke is short, and the return spring 5 is in the second state. Under the action of the return spring 5, the adjusting ring 49 is partially blocked at the ends of the first gas channel 11 and the second gas channel 12. Due to the blocking effect, the gas flow rate is small.

[0069] like Figure 3 As shown, after being pressed forcefully, the extruder 6 is strong enough to overcome the resistance of the return spring 5, and its stroke is relatively long, with the return spring 5 in the first state. This allows the adjusting ring 49 to move downwards with the adjusting ring connecting rod 41. The portion of the adjusting ring 49 blocking the ends of the first gas channel 11 and the second gas channel 12 is reduced or not blocked at all, resulting in a larger gas flow rate.

[0070] like Figure 2 and Figure 3As shown, the extrusion member 6 can be configured as a stepped structure. The extrusion member 6 can include a large diameter section 61 and a small diameter section 62. The large diameter section 61 is located at the upper end of the small diameter section 62. The large diameter section 61 is farther away from the inlet of the liquid channel than the small diameter section 62. The maximum diameter of the large diameter section 61 is greater than the diameter of the small diameter section 62. The large diameter section 61 is used to extrude the liquid channel.

[0071] When viewed along axis A, the inlets of the first liquid channel 13 and the second liquid channel 14 at least partially overlap with the large diameter section 61 of the extruder 6, and the large diameter section 61 of the extruder 6 can at least partially block the inlets of the first liquid channel 13 and the second liquid channel 14.

[0072] The squeezing element 6 can be connected to the operating rod of the syringe 200, and pushing the operating rod of the syringe 200 can also press the squeezing element 6 at the same time.

[0073] Two or more syringes 200 can constitute a dual or multi-syringe for supplying liquid. Here, syringe 200 can be referred to as a liquid syringe. It is understood that "multiple" in this application includes two.

[0074] The two outlets of the two syringes 200 can be connected to the first liquid pipe 2 and the second liquid pipe 3 respectively to supply liquid to the liquid channel.

[0075] like Figure 5 and Figure 6 As shown, the extruder 6 and the operating rod of the syringe 200 can be connected by a connecting assembly, which makes the travel of the operating rod of the syringe 200 longer than that of the extruder 6.

[0076] Specifically, the connecting assembly includes an active connecting cylinder 300 and a driven connecting cylinder 400. Both the active connecting cylinder 300 and the driven connecting cylinder 400 include a cylinder body and a piston. The cylinder bodies of the active connecting cylinder 300 and the driven connecting cylinder 400 can be connected, for example, by a connector 500 made of medical silicone tubing, for example, in a sealed manner. The operating rod of the active connecting cylinder 300 and the operating rod of the syringe 200 can be fixedly connected together, and the piston 401 of the driven connecting cylinder is fixedly connected to the extruder 6.

[0077] The driven connecting cylinder 400 has a pressure relief hole 402 on its wall, and the diameter of the pressure relief hole can be, for example, 0.1 to 0.2 mm. When the air inside the cylinder of the driving connecting cylinder 300 and the cylinder of the driven connecting cylinder 400 is compressed, the compressed gas can be slowly discharged through the pressure relief hole 402 in order to maintain the pressure stability inside the cylinder.

[0078] When the operating lever of the active connecting cylinder 300 is pushed, the active connecting cylinder piston 301 moves forward, compressing the air in the cylinders of the active connecting cylinder 300 and the driven connecting cylinder 400, thereby pushing the driven connecting cylinder piston 401, and in turn pushing the extruder 6 to move. It can be understood that, due to the compression of air and its expulsion from the cylinder, the stroke of the operating lever of the syringe 200 is longer than the stroke of the extruder 6.

[0079] Reference Figure 5 and Figure 6 The portions of the active connecting cylinder 300 and the driven connecting cylinder 400 that are close to or connected to each other may each include stepped portions, so as to limit the range of motion of the active connecting cylinder piston 301 and the driven connecting cylinder piston 401 respectively, and also to prevent the active connecting cylinder piston 301 from directly pushing the driven connecting cylinder piston 401.

[0080] For example, the active connecting tube 300 and the driven connecting tube 400 may be located between the two syringes 200.

[0081] It is understandable that the cylinder body of the active connecting cylinder 300 and the cylinder body of the driven connecting cylinder 400 can be inserted together or formed as a single unit.

[0082] It is understood that the syringe 200, or rather the syringe 200's barrel, can also be connected to the nozzle body 1 in a relatively fixed position to stabilize the driven connecting cylinder 400 and facilitate operation. This connection can be a bracket connection, a sleeve connection, a housing connection, etc. This connection can be detachable to facilitate reuse, especially for adaptive atomizing nozzles.

[0083] like Figure 2 As shown, after the extruder 6 is pressed with a weak force, although it can be pressed to move, it is insufficient to overcome the resistance of the return spring 5 to cause the spring to deform sufficiently. The stroke is short, and the return spring 5 is in the second state. The large-diameter section 61 will not compress the first liquid pipe 2 and the second liquid pipe 3, and the first liquid pipe 2 and the second liquid pipe 3 maintain their original cross-sectional shapes.

[0084] like Figure 3 As shown, after the extruder 6 is pressed down with great force, it is strong enough to overcome the resistance of the return spring 5. The stroke of the movement is relatively long. The return spring 5 is in the first state. The large diameter section 61 will squeeze the first liquid pipe 2 and the second liquid pipe 3 radially outward, causing the first liquid pipe 2 and the second liquid pipe 3 to deform and the cross-section to decrease.

[0085] After the pushing force is removed, the return spring 5 can return the pressed-down extruder 6 to its original position, thereby driving the adjusting ring 49 to return to its original position.

[0086] The adaptive atomizing nozzle of this application can be used with a disposable syringe 200. The two raw components are stored separately in two syringes 200. Normally, when the syringe 200 is pushed with a weak force, the pushing speed is slow, and the liquid is delivered slowly; when the syringe 200 is pushed with a strong force, the pushing speed is fast, and the liquid is delivered quickly.

[0087] The flow rate of the liquid material per unit time is equal to the flow velocity multiplied by the cross-sectional area. While a strong push on the extruder 6 results in a faster flow velocity, the cross-sectional area of ​​the liquid material pipe is smaller; conversely, a weak push on the extruder 6 results in a slower flow velocity, but the cross-sectional area of ​​the liquid material pipe is larger. This ensures that the flow rate of the liquid material output from the pipe does not fluctuate drastically regardless of whether the push is strong or weak.

[0088] Combination Figure 2 and Figure 5 As shown, when the syringe plunger is pushed with a weak force, the squeezing member 6 will not squeeze the first liquid delivery pipe 2 and the second liquid delivery pipe 3. Although the liquid delivery speed is slow, the cross-sectional area of ​​the liquid delivery pipe is at its maximum. At this time, the adjusting ring 49 blocks the airflow channel, reducing the airflow rate.

[0089] Combination Figure 3 and Figure 5 As shown, when the syringe's operating lever is forcefully pushed, the squeezing member 6 deforms the first liquid pipe 2 and the second liquid pipe 3, reducing the cross-sectional area of ​​the liquid pipes, but increasing the liquid delivery speed. At this time, the adjusting ring 49 no longer obstructs the airflow channel under the push of the squeezing member 6, resulting in a larger airflow rate.

[0090] In summary, the adaptive atomizing nozzle of the present invention, taking into account the influence of multiple factors, ensures a high degree of matching between the liquid output from the liquid pipeline and the airflow in the gas channel, regardless of whether the atomization is strong or weak. Both are within a balanced and reasonable atomization parameter range, which can make the atomization effect of the liquid basically stable, thereby making the coating thickness uniform and stable.

[0091] Here, the inner diameter of the portion of the axial cavity 15 surrounding or accommodating the adjusting ring 49 can be smaller than the inner diameter of the spray nozzle 17 below it.

[0092] The adaptive atomizing nozzle of this application can achieve three-stage atomization, and the atomization and multi-component cross-linking effects are good.

[0093] It is understandable that the shape of the feed pipe will also affect the resistance encountered by the feed liquid flowing within it, thereby affecting the flow rate.

[0094] Primary atomization: When liquid is sprayed out from a small-diameter liquid channel, primary atomization can be achieved.

[0095] Secondary atomization: In the central hole 43 of the regulating ring 49, high-pressure gas blows away the droplets after primary atomization, and they collide and splash with the inner wall of the regulating ring 49, so that the droplets after primary atomization can be mixed by collision, thus achieving secondary atomization.

[0096] Third-stage atomization: When the droplets from the second-stage atomization in the regulating ring 49 enter the larger inner diameter spray nozzle 17, third-stage atomization is achieved. Furthermore, the high-pressure gas flowing out through the airflow groove collides with the atomized droplets, further improving the atomization effect.

[0097] It is understood that although the above embodiment has two liquid channels, liquid pipes, and gas channels, other possible embodiments may have more than two liquid channels, liquid pipes, and more than two gas channels. Multiple liquid channels may surround the core cavity, and multiple liquid pipes may surround the extruder.

[0098] In other possible implementations, a liquid channel, a liquid pipe, or a gas channel can be provided to make the adaptive atomizing nozzle suitable for single-component spraying. The liquid flow rate and gas flow rate can also be controlled by the extruder squeezing the liquid pipe to deform and drive the adjustment component to move, thereby achieving adaptive adjustment.

[0099] It is understood that the nozzle body 1 may have one or more gas channels, and at least one gas channel may be divided into multiple gas channels near the regulating ring 49.

[0100] The adaptive atomizing nozzle of this application has the following advantages and outstanding effects.

[0101] 1. By extruding the liquid pipe with an extruder, the liquid flow rate can be adaptively adjusted regardless of whether the syringe is pushed with a strong force and a fast speed or with a weak force and a slow speed, thereby achieving uniform and stable coating thickness.

[0102] 2. The atomization effect is stable and uniform. When using different thrusts to push the syringe, the atomization effect can be stabilized by controlling the balance between the liquid flow rate and the airflow.

[0103] 3. Low pushing resistance: High-pressure gas is introduced through the gas channel to help atomize, so there is no need to generate high pressure by pushing the liquid, thus reducing the resistance to pushing the liquid.

[0104] 4. It is especially suitable for cross-linked pharmaceutical adhesives. The spray nozzle can be cleaned by high-pressure gas to avoid clogging of the spray nozzle after the cross-linked and cured adhesive. It is not easy to clog the spray nozzle and can be started and stopped multiple times. It is convenient to stop and observe the spraying effect at any time during use, and then start again to continue spraying.

[0105] 5. Through multi-stage atomization, the atomization and multi-component cross-linking effects are better.

[0106] It should be understood that at least some aspects or features of the above-described implementation methods, embodiments, or examples can be appropriately combined.

[0107] It is understood that, in this application, when the number of parts or components is not specifically limited, the number can be one or more, where multiple refers to two or more. For cases where the number of parts or components shown in the drawings and / or described in the specification is, for example, two, three, four, etc., this specific number is generally exemplary and not restrictive, and can be understood as multiple, i.e., two or more; however, this does not mean that this application excludes the case of one.

[0108] In this application, unless otherwise expressly stated or limited, terms such as "installation," "assembly," "connection," "linking," "joining," "linking," "abutment," "communication," "connection," "conduction," "fixing," and "fastening" should be interpreted broadly, for example, they can be direct or indirect. For instance, regarding connection, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly stated or limited. For instance, regarding communication / conduction, it can be direct communication / conduction or indirect communication / conduction through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0109] In this application, unless otherwise expressly stated or limited, a component being disposed in / installed in / located in / enclosed in / placed within, inside, or within another component can be either of the following two situations: a portion or a majority of the one component is located within the other component; or the one component is completely enclosed within the other component.

[0110] Although the present application has been described in detail using the above embodiments, it will be apparent to those skilled in the art that the present application is not limited to the embodiments described herein. The present application can be modified and implemented as alternative embodiments without departing from the spirit and scope of the present application as defined by the claims. Therefore, the description in this specification is for illustrative purposes only and does not have any limiting meaning for the present application.

Claims

1. An adaptive atomizing tip for use with a syringe (200), comprising: The adaptive atomizing nozzle includes: The nozzle body (1) is provided with a liquid channel, a core cavity (15) and a blocking part (16), and the end of the liquid channel is connected to the core cavity (15). A liquid feed pipe, which is connected to the inlet of the liquid feed channel, and the liquid feed pipe is an elastic pipe; The extrusion member (6) and the blocking part (16) are located on both sides of the liquid pipeline. The extrusion member (6) is movably connected to the nozzle body (1) and connected to the operating rod of the syringe (200). Pushing the operating rod of the syringe (200) can drive the extrusion member (6) to move. The extrusion member (6) can squeeze the liquid pipeline to deform, thereby realizing the adaptive adjustment of the liquid flow rate.

2. The self-adapting atomizing nozzle according to claim 1, wherein, The adaptive atomizing nozzle also includes a return spring (5), which is configured to cause the extruder (6) to tend to move away from the nozzle body (1) along the axial direction (A). The return spring (5) has a first state and a second state. When the return spring (5) is in the first state, the extruder (6) extrudes and deforms the liquid pipeline. When the reset spring (5) is in the second state, the pressing member (6) does not press the liquid pipe. The deformation of the return spring (5) in the first state is greater than the deformation of the return spring (5) in the second state.

3. The self-adapting atomizing nozzle according to claim 1, wherein, The nozzle body (1) is provided with a gas channel, and the end of the gas channel and the end of the liquid channel converge together.

4. The self-adapting atomizing nozzle according to claim 3, wherein, At least the last section of the gas channel is inclined relative to the axial direction (A), and at least the last section of the liquid channel is parallel to the axial direction (A).

5. The self-adapting atomizing nozzle according to claim 3 or 4, characterized in that, The adaptive atomizing nozzle also includes an adjustment ring (49) with a central hole (43). The end of the liquid channel corresponds to the central hole (43), allowing the liquid to pass through the adjustment ring (49) from the central hole (43).

6. The adaptive atomizing nozzle according to claim 5, characterized in that, The adjusting ring (49) is connected to the extruder (6), so that the adjusting ring (49) can move together with the extruder (6), thereby changing the degree to which the adjusting ring (49) blocks the gas passage.

7. The adaptive atomizing nozzle according to claim 6, characterized in that, When the extruder (6) deforms the liquid pipe, the obstruction of the gas passage by the adjusting ring (49) is less than the obstruction of the gas passage by the adjusting ring (49) when the extruder (6) does not deform the liquid pipe.

8. The adaptive atomizing nozzle according to claim 6, characterized in that, An airflow groove (42) extending along the axial direction (A) is provided between the regulating ring (49) and the axial cavity (15), and the airflow groove (42) is connected to the gas channel.

9. A multi-injector assembly, characterized in that, The multi-injector assembly includes an adaptive atomizing nozzle as described in any one of claims 1 to 8, the injector (200), and a connecting assembly that connects the extruder (6) and the operating lever of the injector (200) via the connecting assembly.

10. The multi-injector assembly according to claim 9, characterized in that, The connection assembly includes an active connecting cylinder (300) and a driven connecting cylinder (400). The driven connecting cylinder (400) includes a driven connecting cylinder piston (401). The cylinder body of the active connecting cylinder (300) and the cylinder body of the driven connecting cylinder (400) are connected. The driven connecting cylinder piston (401) is fixedly connected to the extruder (6). Pressing the operating rod of the active connecting cylinder (300) can push the driven connecting cylinder piston (401) to move, thereby driving the extruder (6).

11. The multi-injector assembly according to claim 10, characterized in that, The driven connecting cylinder (400) has a pressure relief hole (402) on its cylinder wall.

Images