Atomizing nozzle

Abstract

The atomizing spray head comprises a spray nozzle with a spray hole in the end face and a rotational flow core arranged in the spray nozzle, the rotational flow core comprises a core column, a convex ring arranged on the end face of the side, close to the spray hole, of the core column and a rotational flow groove capable of penetrating through the convex ring, a liquid guide groove communicated with the spray hole is formed in the inner wall of the spray nozzle, and the outer diameter of the liquid guide groove does not exceed the outer diameter of the outer ring of the convex ring. The atomization angle in atomization operation is kept stable through a simple and ingenious structure, a series of problems, caused by machining, of influencing the stability of the atomization angle are avoided by bypassing the thought of improving the machining precision, and the cost is greatly reduced; therefore, the negative influence on the working efficiency caused by high operation difficulty and insufficient spraying quality in the spraying operation due to the fact that the atomizing angle cannot be kept stable in each field is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to an atomizing nozzle. Background Art

[0002] Atomizing nozzles mainly use high-frequency vibration, pressure difference or airflow principles to atomize liquids. As a device that can efficiently atomize liquids into tiny droplets and evenly distribute them, they have shown broad market prospects in agricultural irrigation, industrial cooling and spraying, air purification and disinfection, personal care and beauty, and other environmental protection, energy saving and intelligent fields, especially in the fields of medical treatment and drug delivery.

[0003] At present, atomizing nozzles generally use single-hole nozzles, and the atomized liquid forms a certain angle and sprays toward the target. In certain specific scenarios, such as spraying, wound drug delivery during medical surgery, and especially pressurized intraperitoneal aerosol chemotherapy (PIPAC), there are certain requirements for the stability of the atomization angle. During the spraying operation, if the stability of the atomization angle cannot be maintained, it is very likely that the uniformity of the spray, the operating efficiency and other operating qualities will not meet the relevant operating regulations.

[0004] The reason for the lack of stability of the atomization angle is usually due to the instability of the swirl formation process inside the atomizing nozzle. The specific reason for the inability to maintain a stable atomization angle is usually that when the liquid flows through the swirl groove between the swirl core and the nozzle, the swirl core and the nozzle are not assembled tightly enough, resulting in the liquid still flowing through the gap between the swirl core and the nozzle, resulting in poor swirl quality. The swirl pressure, flow rate, centrifugal force, etc. are the main reasons affecting the spray angle.

[0005] However, due to the current development of machining technology in various countries around the world, it is difficult to achieve tight assembly of workpieces at a low cost. Such atomizing nozzles are high-precision products, so the defect of unstable atomization angle caused by insufficient tight assembly has not yet been completely eliminated.

[0006] Therefore, high manufacturing cost is one of the main challenges facing the atomizer nozzle industry. Since the manufacturing of atomizer nozzles involves precision technology and high-quality materials, the manufacturing cost is relatively high. Although the atomizer nozzle industry continues to maintain a steady growth trend, it has also reached its own bottleneck in terms of technology.

[0007] Therefore, in order to break through this bottleneck, the present application proposes an atomizing nozzle which can maintain a high stability of the atomization angle during spraying at a relatively low manufacturing cost. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings existing in the prior art, and the proposed atomizing nozzle has a simple and ingenious structure to achieve stable atomization angle during atomization operation, and avoids a series of problems affecting the stability of atomization angle caused by machining by bypassing the idea of ​​improving machining accuracy, thereby greatly reducing costs, and further eliminating the negative impact on operation efficiency in various fields caused by the inability to maintain a stable atomization angle, resulting in difficulty in operation and insufficient spray quality during spraying operations.

[0009] In order to achieve the above object, the present invention provides the following technical solutions: The atomizing nozzle comprises a nozzle with a spray hole on the end face and a swirl core arranged in the nozzle, wherein the swirl core comprises a core column, a convex ring arranged on the end face of the core column close to the spray hole, and a swirl groove that can penetrate inside and outside the convex ring, and the inner wall of the nozzle is provided with a liquid guide groove that penetrates the spray hole, and the outer diameter of the liquid guide groove does not exceed the outer diameter of the outer ring of the convex ring.

[0010] Through the above structure, a simple and ingenious structure is used to achieve a stable atomization angle during atomization operation, and a series of problems affecting the stability of the atomization angle caused by machining are avoided by bypassing the idea of ​​improving machining accuracy, so that the cost is greatly reduced, and the negative impact on operation efficiency in various fields caused by the inability to maintain a stable atomization angle, such as difficulty in operation and insufficient spray quality during spraying operations, is eliminated.

[0011] Preferably, the liquid guiding groove is formed by chamfering the inner edge of the spray hole on the inner wall of the nozzle.

[0012] The above structure makes it easier to machine a very fine part such as a nozzle than to directly mold it.

[0013] Preferably, the swirl groove is opened on the end surface of the convex ring.

[0014] Through the above structure, on the basis of relatively easy processing and manufacturing conditions, it is easier to obtain a cyclone chamber with a smaller volume, and it is easier to realize an atomizing nozzle that meets the spray quality requirements.

[0015] Preferably, the openings at both ends of the swirl groove are located at different diameters of the convex ring.

[0016] Through the above structure, it can be ensured that the swirl groove itself can achieve the purpose of forming a vortex when the liquid flows through it.

[0017] Preferably, the swirl grooves are evenly distributed in an annular shape on the convex ring.

[0018] Through the above structure, the quality of the formed vortex is better, so that the stability of the atomization angle and the overall spray quality are guaranteed.

[0019] Preferably, the difference between the cross-sectional area of ​​the inner hole of the nozzle and the cross-sectional area of ​​the core column is greater than the sum of the cross-sectional areas of all the swirl grooves.

[0020] Through the above structure, the number and cross-sectional area of ​​the swirl grooves and the difference in cross-sectional area between the core column and the nozzle are limited, so that the spray function will not be lost.

[0021] Preferably, a support component is provided at one end of the core column away from the spray hole so that pressure contact is formed between the convex ring and the nozzle.

[0022] Through the above structure, the core column maintains pressure contact with the nozzle end after assembly, so that the swirl chamber always has only one liquid inlet, the swirl groove, thereby avoiding additional losses and other costs caused by the spray quality not meeting the requirements at the beginning of the spray operation.

[0023] Preferably, the supporting component comprises a spring.

[0024] Through the above structure, the spray effect can be kept efficient from beginning to end in a relatively economical way, and it is easy to replace without affecting the spray quality.

[0025] Preferably, the outer diameter of the liquid guiding groove does not exceed the inner diameter of the convex ring.

[0026] The above structure ensures that the liquid can obtain sufficient centrifugal force, thereby ensuring the stability of the atomization angle and the atomization quality.

[0027] Preferably, the nozzle is further provided with a liquid channel located on the side of the core column away from the spray hole, and the liquid forms a vortex after flowing through the liquid channel and then enters the swirl groove.

[0028] Through the above structure, two vortices are formed, allowing the liquid to experience a centrifugal force enhancement before entering the swirl groove to form a vortex. This not only allows the liquid to instantly fill the entire nozzle and achieve instant mist output, but also greatly improves the quality of the entire mist output.

[0029] Preferably, the liquid channel is in the shape of a spiral groove and is distributed on the axial side surface of the core column.

[0030] Through the above structure, the processing and forming of the liquid channel can be implemented relatively easily.

[0031] Preferably, the outer diameter of the end of the core column away from the convex ring matches the inner diameter of the nozzle.

[0032] Through the above structure, the quality of the vortex formed for the first time is better, thereby increasing the centrifugal force before entering the swirl groove, so that the overall spray quality is improved.

[0033] Preferably, one end of the nozzle away from the spray hole is detachably connected with a liquid supply rod for supplying liquid to the nozzle.

[0034] Through the above structure, the nozzle and atomizing head with very fine structure can be easily replaced during production, assembly and repeated use, and a variety of usage modes can be provided to meet the application modes in different situations.

[0035] Preferably, the liquid supply rod is threadedly connected to the nozzle, and a sealing structure is provided at the threaded connection.

[0036] The above structure facilitates detachable replacement and can prevent the spray quality from being affected and the nozzle from being blocked during the spray operation.

[0037] Preferably, a step for clamping the other end of the supporting component is provided on the inner wall of the liquid supply rod.

[0038] Through the above structure, the nozzle can be removed and replaced more conveniently without affecting the fluidity of the liquid itself.

[0039] Compared with the prior art, the present invention has the following beneficial effects: a simple and ingenious structure is used to achieve a stable atomization angle during atomization operation, and a series of problems affecting the stability of the atomization angle caused by machining are avoided by bypassing the idea of ​​improving machining accuracy, thereby significantly reducing costs, thereby eliminating the negative impact on operation efficiency in various fields caused by the inability to maintain a stable atomization angle, resulting in difficulty in operation and insufficient spray quality during spray operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a three-dimensional structural schematic diagram of the atomizing nozzle proposed by the present invention, mainly showing the distribution positions of the nozzle and the swirl core; Figure 2 This is a schematic diagram of the assembly structure of the nozzle and the swirl core in the atomizing nozzle proposed by the present invention; Figure 3 for Figure 2 Left view of; Figure 4 This is a schematic diagram of the three-dimensional structure of the swirl core in the atomizing nozzle proposed by the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the swirl core in the atomizing nozzle proposed by the present invention from another perspective, mainly showing the convex ring and the swirl groove; Figure 6 This is a schematic diagram of the three-dimensional structure of the final assembly of the atomizing nozzle proposed by the present invention.

[0041] In the figure: 1. nozzle; 11. spray hole; 12. liquid guide groove; 2. swirl core; 21. core column; 22. convex ring; 221. swirl groove; 3. support component; 31. spring; 4. liquid channel; 5. liquid supply rod; 51. step; 6. sealing structure. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-5 The present invention provides the following technical solution: an atomizing nozzle, comprising a nozzle 1 with a spray hole 11 on the end face and a swirl core 2 arranged in the nozzle 1, the swirl core 2 comprising a core column 21, a convex ring 22 arranged on the end face of the core column 21 close to the spray hole 11, and a swirl groove 221 that can penetrate the inside and outside of the convex ring 22, the inner wall of the nozzle 1 is provided with a liquid guide groove 12 that penetrates the spray hole 11, and the outer diameter of the liquid guide groove 12 is Not exceeding the outer diameter of the outer ring of the convex ring 22 .

[0044] As an optional embodiment of the present invention, when high-pressure liquid flows into the nozzle 1, it creates an impact force on the swirl core 2, causing it to form pressure contact with the end of the nozzle 1. At the same time, part of the liquid flows into the swirl chamber between the liquid guide groove 12 and the convex ring 22 through the swirl groove 221 and forms a vortex. As the pressure further increases, it is ejected from the spray hole 11 to form a spray.

[0045] During the continuous spraying process, since the nozzle 1 is in continuous pressure contact with the end of the nozzle 1, there is no gap between the convex ring 22 and the nozzle 1, so that the liquid can only enter the swirl chamber through the swirl groove 221, and the pressure of the pressure contact comes from the pressure difference at both ends of the swirl groove 221. The pressure difference is stably maintained because the flow rate of the liquid entering the nozzle 1 is greater than the flow rate of the liquid entering the swirl chamber, so the pressure contact can also be maintained for a long time, so the state that the liquid can only enter the swirl chamber through the swirl groove 221 can be maintained for a long time, so the atomization angle during spraying can also be maintained for a long time. The most critical thing is that such a design does not require and cannot allow the core column 21 to form a tight fit with the inner wall of the nozzle 1, so it fundamentally avoids the problems of difficulty and high cost of modern machining, which is enough to improve the problems of insufficient atomization quality and difficulty in atomization operation due to the inability to maintain the atomization angle in various existing fields, so that the operating efficiency is greatly improved.

[0046] Through the above structure, a simple and ingenious structure is used to achieve a stable atomization angle during atomization operation, and a series of problems affecting the stability of the atomization angle caused by machining are avoided by bypassing the idea of ​​improving machining accuracy, so that the cost is greatly reduced, and the negative impact on operation efficiency in various fields caused by the inability to maintain a stable atomization angle, such as difficulty in operation and insufficient spray quality during spraying operations, is eliminated.

[0047] like Figure 3 As shown, the liquid guiding groove 12 is formed by chamfering the inner edge of the spray hole 11 on the inner wall of the nozzle 1.

[0048] As an optional embodiment of the present invention, the swirl chamber formed between the liquid guide groove 12 and the inner side of the convex ring 22 is a space for generating a vortex. Since the aperture of the spray hole 11 is extremely small, the liquid guide groove 12 is formed by chamfering. The machining accuracy is not great, so the difficulty is not too great, and it is easier to implement than the direct mold forming method. Of course, the actual processing method can also be to first perform chamfering and then open the spray hole 11 at the sharp corner of the chamfer. The specific processing step sequence is not limited by this technical solution.

[0049] Those skilled in the art should understand that the chamfering process should be regarded as including both rounding and beveling.

[0050] The above structure makes it easier to machine a very fine part such as the nozzle 1 than to directly mold it.

[0051] like Figure 2 and Figure 5 As shown, the swirl groove 221 is opened on the end surface of the convex ring 22.

[0052] As an optional embodiment of the present invention, it is worth understanding that the outer diameter of the convex ring 22 can be the same as or different from the outer diameter of the core column 21, depending on the actual outer diameter of the core column 21 relative to the inner diameter of the nozzle 1, under the condition that the difference between the cross-sectional area of ​​the subsequent inner hole of the nozzle 1 and the cross-sectional area of ​​the core column 21 is greater than the sum of the cross-sectional areas of all the swirl grooves 221.

[0053] Preferably, the inner diameter of the convex ring 22 can be much smaller than the outer diameter of the core column 21 (even about half of the outer diameter of the core column 21). This is mainly to allow the liquid to quickly fill the gap between the core column 21 and the inside of the nozzle 1, thereby maintaining stable pressure and flow rate during spraying. In addition, this can make the space of the vortex chamber smaller without increasing the gap between the core column 21 and the nozzle 1. If the inner diameter of the convex ring 22 is too large, the outer diameter of the liquid guide groove 12 may be too smaller than the inner diameter of the convex ring 22, which will prevent the liquid part with the largest centrifugal force from directly flowing out of the spray hole 11 when the liquid passes through the vortex groove 221.

[0054] The following explains the principle that the inner diameter of the convex ring 22 affects the spray effect: When the variable only considers the inner diameter r of the convex ring 22 (i.e., the radius when the liquid flows out of the swirl groove 221), according to the formula of centrifugal force: , where F is the centrifugal force, m is the mass of the object, v is the velocity (i.e., the flow velocity of the liquid when it flows out of the swirl groove 221, at which time the flow velocity is a non-variable, and in fact the flow velocity is only affected by the pressure and the flow rate of the swirl groove 221, while the pressure itself is constant, and the flow rate of the swirl groove 221 is a constant value, so in fact the flow velocity itself is a constant value), and r is the rotation radius. It can be seen that the rotation radius is inversely proportional to the centrifugal force, that is, when the inner diameter of the convex ring 22 is larger, the centrifugal force is smaller.

[0055] According to the influence of centrifugal force on particle size: when the centrifugal force increases, the outward force on the liquid material increases, making it easier for the liquid to be dispersed into fine droplets. Therefore, the spray particle size will decrease accordingly. In other words, the influence of centrifugal force on particle size is positive. When the centrifugal force is smaller, the particle size is smaller, which may result in the spray quality not meeting the requirements required for spraying.

[0056] In summary, the inner diameter of the convex ring 22 is preferably much smaller than the outer diameter of the core column 21, so that it is easier for the liquid part with the highest flow rate in the vortex to be sprayed directly from the spray hole 11, thereby achieving the required spray quality.

[0057] It is worth mentioning that compared with the current method of designing the swirl groove 221 on the axial side wall (or the inner wall of the tube) of the swirl core 2, the swirl groove 221 designed on the end face (that is, the convex ring 22 mentioned above is designed on the end face) not only has the aforementioned advantages of easier processing and maintaining a stable atomization angle, but also has the advantage of being easier to achieve a smaller swirl chamber volume. A smaller swirl chamber volume makes it easier to achieve the required spray quality.

[0058] Through the above structure, on the basis of relatively easy processing and manufacturing conditions, it is easier to obtain a cyclone chamber with a smaller volume, and it is easier to realize an atomizing nozzle that meets the spray quality requirements.

[0059] like Figure 2 and Figure 5 As shown, the openings at both ends of the swirl groove 221 are located at different diameters of the convex ring 22 .

[0060] As an optional embodiment of the present invention, the swirl groove 221 with openings at both ends located on different diameters defines that the direction of liquid flowing through the swirl groove 221 is non-radial, so it can be ensured that the swirl groove 221 itself can achieve the purpose of forming a vortex in the liquid flowing through it.

[0061] It should be understood that the above-mentioned limitation is only a functional limitation, and not a limitation on the specific shape of the swirl trough 221. The swirl trough 221 can be linear or arc-shaped. Different liquids have different spray functions. For example, in some cases, the liquid is water, or the components in the liquid are more fully dissolved, so it can be arc-shaped. However, in some cases, the mixed components in the liquid may contain particulate matter and easily cause the swirl trough 221 to be blocked. In this case, it is best to be linear and easy to clean. Of course, the specific shape of the swirl trough 221 in the present technical solution is not limited. The implementation of the swirl trough 221 in different ways by those skilled in the art should be regarded as within the protection scope of the swirl trough 221.

[0062] Through the above structure, it can be ensured that the swirl groove 221 itself can achieve the purpose of forming a vortex when the liquid flows through it.

[0063] like Figure 2 and Figure 5 As shown, the swirl grooves 221 are evenly distributed on the convex ring 22 in an annular shape.

[0064] Through the above structure, the quality of the formed vortex is better, so that the stability of the atomization angle and the overall spray quality are guaranteed.

[0065] like Figure 2-3 As shown, the difference between the cross-sectional area of ​​the inner hole of the nozzle 1 and the cross-sectional area of ​​the core column 21 is greater than the sum of the cross-sectional areas of all the swirl grooves 221 .

[0066] As an optional implementation scheme of the present invention, as mentioned above, the effect of flow rate on centrifugal force cannot be ignored. If the sum of the cross-sectional areas of the swirl grooves 221 exceeds the gap area between the core column 21 and the nozzle 1, it is very likely that the flow rate will not meet the requirements, and even the pressure will not meet the requirements, which will directly lead to the realization of the spray function. Therefore, when actually implementing this technical solution, the diameter of the core column 21 should not be too close to the inner wall of the nozzle 1, and / or the number and cross-sectional area of ​​the swirl grooves 221 should not be set excessively. Of course, in fact, the specific design of the outer diameter of the core column 21, the number of swirl grooves 221, and the cross-sectional area of ​​the swirl grooves 221 can be determined according to the circumstances. As long as the specific method meets the ratio of the two cross-sectional areas specified above, it should be included in the protection scope of this technical solution.

[0067] Through the above structure, the number and cross-sectional area of ​​the swirl grooves 221 and the difference in cross-sectional area between the core column 21 and the nozzle 1 are limited, so that the spray function will not be lost.

[0068] like Figure 2-4 As shown, a support component 3 is provided at one end of the core column 21 away from the spray hole 11 so that pressure contact is formed between the convex ring 22 and the nozzle 1 .

[0069] As an optional implementation scheme of the present invention, although the liquid can rely on the impact force to exert a certain pressure on the core column 21 so that the convex ring 22 forms a pressure contact with the end of the nozzle 1, in actual use, the nozzle 1 may face upward with the spray end, so that the core column 21 does not contact the end face of the nozzle 1 due to gravity when not in use (or before it is about to be used). This causes part of the liquid to bypass the core column 21 and enter the spray hole 11 directly at the beginning of spraying, and no spray effect that meets the requirements is produced. In certain specific scenarios, such as spraying and medical treatment, certain losses will occur, or the quality of the spray operation will not meet the requirements and additional rework costs will be generated. Therefore, by using the support component 3, the core column 21 can maintain pressure contact with the end face of the nozzle 1 after self-assembly, which can well avoid these situations. As for the specific setting of the support component 3, it can be rigid or elastic. All ways that enable the core column 21 to maintain pressure contact with the end face of the nozzle 1 are within the protection scope of the support component 3.

[0070] Through the above structure, the core column 21 maintains pressure contact with the end of the nozzle 1 after self-assembly, so that the swirl chamber always maintains only one liquid inlet, the swirl groove 221, thereby avoiding additional losses and other costs caused by the spray quality not meeting the requirements at the beginning of the spray operation.

[0071] like Figure 2-4 As shown, the supporting component 3 includes a spring 31 .

[0072] As an optional embodiment of the present invention, as mentioned above, the support component 3 is to solve the technical problem that the end face of the nozzle 1 cannot be closely attached when the spray starts, and the spring 31 is one of the ways to achieve this. More specifically, it is best to use a compression spring 31, and the spring 31 is in a compressed state when installed. The advantage of using the spring 31 is that it is a relatively economical way to manufacture, and it is also very convenient to assemble and disassemble. It is also very convenient when the front end component of the entire nozzle (i.e., the nozzle 1 plus the core column 21) needs to be replaced, and the impact on the flow rate is also very small, and it is not easy to affect the atomization quality.

[0073] Through the above structure, the spray effect can be kept efficient from beginning to end in a relatively economical way, and it is easy to replace without affecting the spray quality.

[0074] like Figure 2-3 As shown, the outer diameter of the liquid guide groove 12 The inner diameter r of the protruding ring 22 does not exceed.

[0075] As an optional embodiment of the present invention, as mentioned above, when the inner diameter r of the convex ring 22 is too large, it is easy to cause the atomization quality to fail to meet the requirements, and when the inner diameter r of the convex ring 22 is small, although the atomization quality will indeed be better. The outer diameter of the liquid guide groove 12 If the outer diameter of the liquid guide groove 12 is too small, the liquid will directly enter the liquid guide groove 12 through the outside of the convex ring 22, which greatly reduces the atomization quality. Therefore, the outer diameter of the liquid guide groove 12 is not allowed to be Exceeding the outer diameter of the outer ring of the convex ring 22 of.

[0076] In this technical solution, the outer diameter of the liquid guide groove 12 is limited By not exceeding the inner diameter r of the convex ring 22, it is ensured that the liquid will not directly enter the cyclone chamber from the outside of the convex ring 22 without passing through the cyclone groove 221, and further ensures that the distance for the liquid to flow through the cyclone groove 221 is sufficient. If the liquid cannot pass through the cyclone groove 221 for a sufficient distance, the centrifugal force obtained will be far from enough, thereby affecting the stability of the atomization angle and the atomization quality.

[0077] The above structure ensures that the liquid can obtain sufficient centrifugal force, thereby ensuring the stability of the atomization angle and the atomization quality.

[0078] like Figure 2-5 As shown, the nozzle 1 is further provided with a liquid channel 4 located on the side of the core column 21 away from the spray hole 11 , and the liquid flows through the liquid channel 4 to form a vortex and then enters the vortex groove 221 .

[0079] As an optional embodiment of the present invention, it should be understood that the above embodiment is that the liquid first undergoes a vortex formation before entering the swirl groove 221. That is to say, in the entire spraying process, the liquid undergoes two vortex formations. The advantage of this method is that the first vortex formation can increase the centrifugal force of the liquid, so that the liquid can quickly reach the convex ring 22 after entering the nozzle 1, and due to the strengthening of the centrifugal force, the centrifugal force of the liquid when entering the swirl groove 221 is further improved, thereby further improving the stability of the atomization angle, and the spray particle size is smaller, so the atomization effect is more uniform and the atomization quality is higher.

[0080] In the present technical solution, for the liquid channel 4 that forms the first vortex, those skilled in the art should understand that the liquid channel 4 can be a spiral channel, such as the existing conventional swirl groove 221, which can be designed on the axial side wall of the core column 21, or can be a plurality of spiral through-type channels through the inner wall of the core column 21, and the present technical solution does not make specific restrictions on this. Similarly, the specific structure of the liquid channel 4 can be independent of the core column 21, or can be integrated with the core column 21 or fixed to each other, and the present technical solution does not make specific restrictions on this.

[0081] Through the above structure, two vortices are formed, allowing the liquid to experience centrifugal force enhancement before entering the vortex groove 221 to form a vortex, which can not only allow the liquid to instantly fill the entire nozzle 1 and achieve instant mist output, but also greatly improve the quality of the entire mist output.

[0082] like Figure 2-5 As shown, the liquid channel 4 is in the shape of a spiral groove and is distributed on the axial side surface of the core column 21.

[0083] As an optional embodiment of the present invention, as mentioned above, the core column 21 is also a relatively precise component, so the method of processing and forming it inside becomes extremely difficult, and it is easier to design it on the surface of the core column 21, and the liquid channel 4 is integrated with the core column 21, reducing additional production steps.

[0084] In the present technical solution, due to the clamping of the liquid channel 4, the diameter of the portion of the core column 21 in the liquid channel 4 can be larger than the diameter of the core column 21 when the first vortex is formed, and can even be close to the inner diameter of the nozzle 1, that is, the appearance of the entire core column 21 is a truncated cone, which makes the surface area of ​​the portion of the core column 21 on the liquid channel 4 larger, making the processing of the liquid channel 4 easier to implement and also making the quality of the first vortex formation better (reducing the gap between the core column 21 and the nozzle 1 except for the liquid channel 4).

[0085] Through the above structure, the processing and forming of the liquid channel 4 can be implemented relatively easily.

[0086] like Figure 2-3 As shown, the outer diameter of the end of the stem 21 away from the protruding ring 22 matches the inner diameter of the nozzle 1 .

[0087] As an optional implementation scheme of the present invention, as mentioned above, the quality of the vortex formed by the liquid is related to the amount of liquid passing through the liquid channel 4. If the core column 21 matches the inner diameter of the nozzle 1, then the proportion of liquid entering the vortex groove 221 from the liquid channel 4 is larger, so the vortex quality is better. In addition, this method allows the core column 21 to form friction with the inner wall of the nozzle 1 after assembly, so it is not easy to rotate in the nozzle 1 and affect the vortex quality.

[0088] Through the above structure, the quality of the vortex formed for the first time is better, thereby increasing the centrifugal force before entering the swirl groove 221, so that the overall spray quality is improved.

[0089] like Figure 1-2 and Figure 6 As shown, one end of the nozzle 1 away from the spray hole 11 is detachably connected to a liquid supply rod 5 for supplying liquid to the nozzle 1 .

[0090] As an optional embodiment of the present invention, the liquid supply rod 5 is currently usually used as a handheld component, or can be fixed on a mechanical arm in the industrial field, and can be used as a component fixed on an incision in the medical field, mainly for supplying liquid to the nozzle, which is not listed here one by one. The detachable design enables the aforementioned nozzle and the atomizer attached to the nozzle to be replaced separately, so as to better carry out the cleaning required for reuse, or as a discard, those skilled in the art can also choose a non-detachable assembly method, or even an integrated design scheme, but this will increase the difficulty of assembling each component, especially the atomizer head. For the detachable connection method, it can be a threaded method as shown in the figure, or it can be other methods, and the technical solution does not specifically limit this.

[0091] In actual application, the liquid supply rod 5 may be a soft catheter or a hard rod-shaped catheter, so the technical solution does not limit the specific form of the liquid supply rod 5.

[0092] Through the above structure, the nozzle and atomizing head with very fine structure can be easily replaced during production, assembly and repeated use, and a variety of usage modes can be provided to meet the application modes in different situations.

[0093] like Figure 2-3 As shown, the liquid supply rod 5 is threadedly connected to the nozzle 1, and a sealing structure 6 is provided at the threaded connection.

[0094] As an optional embodiment of the present invention, the sealing structure 6 can be an O-ring, mainly to prevent external air, impurities, etc. from entering the nozzle 1 during use, or causing blockage, or affecting the quality of the sprayed area. The threaded connection method is very convenient for detachable replacement.

[0095] The above structure facilitates detachable replacement and can prevent the spray quality from being affected and the nozzle 1 from being blocked during the spray operation.

[0096] like Figure 3 As shown, a step 51 for clamping the other end of the supporting component 3 is provided on the inner wall of the liquid supply rod 5 .

[0097] As an optional implementation scheme of the present invention, as mentioned above, in order to achieve the purpose of detachable replacement, the support component 3, especially the spring 31, needs to provide an installation position at the other end of the support component 3, and the step 51 is directly formed through the inner wall of the liquid supply rod 5, so that the assembly is also more convenient. The most important thing is that such a structural design will not affect the circulation of the liquid itself.

[0098] Through the above structure, on the basis of not affecting the fluidity of the liquid itself, the nozzle 1 is made detachable and replaceable in an ingenious way, which makes it more convenient to achieve the purpose.

[0099] The working principle and use process of the present invention are as follows: when the high-pressure liquid flows into the nozzle 1, it creates an impact force on the swirl core 2, causing it to form a pressure contact with the end of the nozzle 1. At the same time, part of the liquid flows into the swirl chamber between the liquid guide groove 12 and the convex ring 22 through the swirl groove 221 and forms a vortex. As the pressure further increases, it is ejected from the spray hole 11 to form a spray.

[0100] During the continuous spraying process, since the nozzle 1 is in continuous pressure contact with the end of the nozzle 1, there is no gap between the convex ring 22 and the nozzle 1, so that the liquid can only enter the swirl chamber through the swirl groove 221, and the pressure of the pressure contact comes from the pressure difference at both ends of the swirl groove 221. The pressure difference is stably maintained because the flow rate of the liquid entering the nozzle 1 is greater than the flow rate of the liquid entering the swirl chamber, so the pressure contact can also be maintained for a long time, so the state that the liquid can only enter the swirl chamber through the swirl groove 221 can be maintained for a long time, so the atomization angle during spraying can also be maintained for a long time. The most critical thing is that such a design does not require and cannot allow the core column 21 to form a tight fit with the inner wall of the nozzle 1, so it fundamentally avoids the problems of difficulty and high cost of modern machining, which is enough to improve the problems of insufficient atomization quality and difficulty in atomization operation due to the inability to maintain the atomization angle in various existing fields, so that the operating efficiency is greatly improved.

[0101] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An atomizing nozzle, comprising a nozzle with a spray hole on the end face and a swirl core arranged in the nozzle, characterized in that: The swirl core includes a core column, a convex ring arranged on the end face of the core column close to the spray hole, and a swirl groove that can penetrate the inside and outside of the convex ring. The inner wall of the nozzle is provided with a liquid guide groove that penetrates the spray hole, and the outer diameter of the liquid guide groove does not exceed the outer diameter of the outer ring of the convex ring.

2. The atomizing nozzle according to claim 1, characterized in that: The openings at both ends of the swirl groove are located at different diameters of the convex ring.

3. The atomizing nozzle according to claim 2, characterized in that: The swirl grooves are evenly distributed in an annular shape on the convex ring.

4. The atomizing nozzle according to claim 2, characterized in that: The difference between the cross-sectional area of ​​the inner hole of the nozzle and the cross-sectional area of ​​the core column is greater than the sum of the cross-sectional areas of all the swirl grooves.

5. The atomizing nozzle according to claim 1, characterized in that: A supporting component is provided at one end of the core column away from the spray hole so that pressure contact is formed between the convex ring and the spray nozzle.

6. The atomizing nozzle according to claim 5, characterized in that: The supporting member includes a spring.

7. The atomizing nozzle according to claim 1, characterized in that: The outer diameter of the liquid-conducting groove does not exceed the inner diameter of the convex ring.

8. The atomizing nozzle according to any one of claims 1 to 7, characterized in that: The nozzle is also provided with a liquid channel located on the side of the core column away from the spray hole, and the liquid flows through the liquid channel to form a vortex and then enters the swirl groove.

9. The atomizing nozzle according to claim 8, characterized in that: The liquid channel is in the shape of a spiral groove and is distributed on the axial side surface of the core column.

10. The atomizing nozzle according to claim 1, characterized in that: One end of the nozzle away from the spray hole is detachably connected with a liquid supply rod for supplying liquid to the nozzle.

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