Annular spraying type multi-hole spray head of spray valve

Abstract

The utility model discloses an annular spraying type multi-hole sprayer of a spray valve. The annular spraying type multi-hole sprayer comprises a glue guide pipe and a sprayer body. The upper end of the nozzle main body is detachably inserted outside the lower end of the glue guide pipe, a plurality of glue outlet holes are uniformly and annularly formed in the outer wall of the lower part of the nozzle main body, a plurality of air flow channels correspondingly communicated to the plurality of glue outlet holes are uniformly formed in the outer wall of the nozzle main body from top to bottom, and the lower ends of the plurality of air flow channels correspondingly do not shield the plurality of glue outlet holes in the transverse direction. The spray head has the beneficial effects that the spray head main body is optimally designed in structure, so that generated atomized glue solution particles can be uniformly diffused from the outer wall of the lower part of the spray head main body to the periphery of the spray head main body, atomized spray dispensing can be carried out on the inner wall of a product with a hollow cylindrical structure in an annular spray manner, and the spray head can be used for related dispensing operation. And the uniformity and rapidity of glue liquid spraying in a unit area can be met, so that compared with a traditional one-way spraying glue dispensing mode, the operation efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dispensing equipment, in particular to a spray valve ring-spray type porous nozzle. Background Art

[0002] A dispensing valve is an essential dispensing accessory in dispensing equipment to achieve product dispensing, glue coating, potting, encapsulation, etc. Its main functions are to transport the encapsulated glue medium and quickly suck back and stop the flow of the glue in case of dripping of the colloid or fluid during the encapsulation process to ensure the encapsulation quality.

[0003] Simply put, a dispensing valve is a special switch that can achieve instant glue stopping and is often used together with a dispensing machine and a potting machine. Commonly used ones include a volume valve, a back-suction type dispensing valve, a thimble type dispensing valve, a plunger type dispensing valve, a jet type dispensing valve, etc.

[0004] In the utility model patent "pneumatic jet dispensing valve" with the patent number "201820356027." previously applied by the patent applicant of this patent, it can spray the glue liquid downward in a jet state onto the product surface to achieve jet dispensing. However, for products with a hollow cylindrical structure, when jet dispensing is required on their inner walls, the relevant pneumatic jet dispensing valves are a bit impractical and cannot quickly and evenly perform jet dispensing on the inner walls of products with a hollow cylindrical structure.

[0005] To solve the above-mentioned related technical problems, an elbow dispensing needle is traditionally set to achieve side spraying of the glue liquid for jet dispensing on the side walls of the product, but it still cannot meet the uniformity and rapidity of glue liquid spraying per unit area, resulting in the inability to effectively improve the operation efficiency.

[0006] In view of this, the inventor of this patent, combining work experience, through in-depth thinking about the problems encountered in work, consulting a large number of scientific research materials and literature, and through retrieval and novelty search, gradually conceived and designed this application to solve the related technical problems. Summary of the Utility Model

[0007] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the purpose of the utility model is to provide a spray valve ring-spray type porous nozzle.

[0008] To achieve one of the above purposes, according to an embodiment of the utility model, the spray valve ring-spray type porous nozzle includes a glue guiding pipe and a nozzle body with a hollow structure;

[0009] The upper end of the nozzle body is detachably inserted outside the lower end of the glue guide tube, and a plurality of glue outlet holes penetrating into its interior are evenly arranged in a ring on the outer wall of the lower part of the nozzle body. A plurality of air channels corresponding to and communicating with the plurality of glue outlet holes are evenly formed on the outer wall of the nozzle body from top to bottom. The lower ends of the plurality of air channels laterally correspond to and non-block the plurality of glue outlet holes.

[0010] In addition, the annular spray nozzle of the spray valve according to the above embodiment of the present invention may further have the following additional technical features:

[0011] According to an embodiment of the present invention, the plurality of air channels are all spirally distributed, with air inlets formed at their upper ends and air outlets formed at their lower ends and corresponding to communicate with the plurality of glue outlet holes.

[0012] According to an embodiment of the present invention, it further includes an air sleeve with an inner diameter larger than the outer diameter of the glue guide tube;

[0013] The outer walls of the plurality of air channels are all open structures from top to bottom; the air sleeve is sleeved outside the nozzle body to seal the non-air inlet and air outlet regions of the plurality of air channels.

[0014] According to an embodiment of the present invention, the plurality of glue outlet holes are located in the middle and lower parts of the outer wall of the nozzle body; the lower end of the nozzle body is a sealed structure and is convexly provided with a circle of glue-blocking outer edges, and the outer diameter of the glue-blocking outer edges is slightly larger than the outer diameter of the air sleeve;

[0015] The air sleeve encloses the plurality of glue outlet holes, and there is a certain gap A between the lower peripheral edge of the air sleeve and the upper end face of the glue-blocking outer edge to form an annular spray port.

[0016] According to an embodiment of the present invention, the outer diameter of the lower end of the nozzle body gradually increases from top to bottom below the plurality of glue outlet holes to form a diversion slope for downwardly guiding the atomized glue liquid particles, and there is a certain gap B between the lower end of the diversion slope and the inner wall of the lower end of the air sleeve.

[0017] According to an embodiment of the present invention, the upper end of the air sleeve extends upward and forms a reduced opening to seal and enclose the outer part of the upper end of the glue guide tube, and a plurality of air inlet holes A penetrating into the air sleeve are evenly formed on the outer wall of the reduced opening.

[0018] According to an embodiment of the present invention, it further includes a funnel-shaped connector and a fixing nut;

[0019] The funnel-shaped connector is fixedly arranged outside the upper part of the air sleeve. A step surface A is formed in the lower part thereof. A fixing hole adapted for inserting the upper end of the air sleeve and the upper end of the glue guide tube is formed in the middle of the step surface A. A plurality of air inlet channels corresponding to and communicating with a plurality of the air inlet holes A are uniformly formed in the periphery of the step surface A. The fixing nut is rotatably sleeved outside the upper part of the funnel-shaped connector.

[0020] According to an embodiment of the present invention, it further includes a hollow valve core with open upper and lower ends.

[0021] A step surface B is annularly arranged in the upper part of the funnel-shaped connector. The outer diameter of the hollow valve core is slightly smaller than the inner diameter of the step surface B. The lower end thereof is formed into a constricted mouth to be adapted to abut against the upper end of the glue guide tube and communicate with the upper end of the glue guide tube. A lifting part is annularly arranged downward on the outer wall of the middle part of the hollow valve core. The lower bottom surface of the lifting part is supported by the step surface B, and a plurality of air inlet holes B communicating with the lower bottom surface thereof to communicate with a plurality of the air inlet channels are uniformly formed near the inner edge of the upper end surface of the lifting part.

[0022] According to an embodiment of the present invention, it further includes a sealing ring.

[0023] A clamping groove is formed downward around the fixing hole in the middle of the step surface A. The sealing ring is clamped in the clamping groove and is located between the lower end of the hollow valve core and the upper end of the glue guide tube to hermetically enclose the abutted parts thereof.

[0024] The beneficial effects of the present invention are as follows:

[0025] First, for the spray valve annular spray multi-hole nozzle provided by the present application, in specific implementation, through the optimized design of the structure of the nozzle body, the atomized glue liquid particles generated can be evenly diffused from the lower outer wall thereof to the surrounding. In this way, the nozzle body of the present application can be inserted into a product with a hollow cylindrical structure to a preset depth, and the inner wall thereof can be jet-dotted with glue in an annular spray manner. For related dotting operations, the uniformity and rapidity of glue liquid spraying per unit area can be satisfied, and the operation efficiency can be effectively improved compared with the traditional single-way jet dotting method.

[0026] Second, since the lower ends of a plurality of the air flow channels correspondingly communicate with a plurality of the glue outlet holes, it is possible to better confine multiple airflows to correspondingly blow to a plurality of the glue outlet holes. That is to say, the airflows blowing to a plurality of the glue outlet holes can be increased, so that the glue liquid discharged from a plurality of the glue outlet holes has a good atomization effect under the impact of a large airflow, and the glue liquid particles diffusing to the surrounding will be very uniform. As a result, when finally falling on the inner wall of the product with a hollow cylindrical structure, the glue liquid spraying can be made more uniform.

[0027] Thirdly, the present application optimizes the multiple air flow channels so that they are all spiral. In this way, the gas discharged from the exhaust port at its lower end does not directly go downward to correspondingly align with the multiple glue outlet holes, but all obliquely or as horizontally as possible to correspondingly align with the multiple glue outlet holes. In this way, the glue discharged from the multiple glue outlet holes can be atomized as much as possible along the oblique or horizontal direction under the action of the oblique or horizontal air flow and spread horizontally around, making the overall use effect of the present application better.

[0028] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0030] Figure 1 is the overall structural schematic diagram of the spray valve ring spray type multi-hole nozzle of the present utility model Figure 1 ;

[0031] Figure 2 is the decomposition of the spray valve ring spray type multi-hole nozzle of the present utility model Figure 1 ;

[0032] Figure 3 is the overall structural schematic diagram of the spray valve ring spray type multi-hole nozzle of the present utility model Figure 2 ;

[0033] Figure 4 is the decomposition of the spray valve ring spray type multi-hole nozzle of the present utility model Figure 2 ;

[0034] Reference numerals:

[0035] Spray valve ring spray type multi-hole nozzle 1000;

[0036] Glue guiding tube 10;

[0037] Nozzle body 20;

[0038] Glue outlet hole 201; Air flow channel 202; Glue blocking outer edge 203; Annular spray port 204; Flow guiding slope 205;

[0039] Air sleeve 30;

[0040] Reducing opening 301; air inlet hole A3011;

[0041] Funnel-shaped connector 40;

[0042] Step surface A401; fixing hole 402; air inlet passage 403; step surface B404; clamping groove 405;

[0043] Fixing nut 50;

[0044] Hollow valve core 60;

[0045] Constricted opening 601; supporting part 602; air inlet hole B603;

[0046] Sealing ring 70;

[0047] The realization, functional features and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0048] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings of the specification, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0049] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings of the specification. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0051] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0053] The spray valve annular spray multi-hole nozzle 1000 of the embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0054] Refer to Figures 1 to 4 As shown, the spray valve annular spray multi-hole nozzle 1000 provided according to the embodiment of the present utility model includes a glue guiding tube 10 and a nozzle body 20 with a hollow structure.

[0055] Among them, the upper end of the nozzle body 20 is detachably inserted outside the lower end of the glue guiding tube 10, and a plurality of glue outlet holes 201 penetrating through to its interior are evenly annularly arranged on the outer wall of the lower part of the nozzle body 20. A plurality of air flow channels 202 corresponding to and communicating with the plurality of glue outlet holes 201 are evenly formed on the outer wall of the nozzle body 20 from top to bottom. The lower ends of the plurality of air flow channels 202 non-blockingly correspond to the plurality of glue outlet holes 201 in the horizontal direction.

[0056] Based on the above, it can be clear that in specific implementation, the present application is mainly used as the spray valve annular spray multi-hole nozzle 1000.

[0057] Specifically, when applying this application, the upper end of the spray valve annular spray multi-hole nozzle 1000 of this application is connected to a glue supply device with a pneumatic injection valve, so as to convey glue to it through the connected glue supply device with a pneumatic injection valve. The conveyed glue is sprayed into it from the upper end of the glue guide tube 10 and will spray out from a plurality of the glue outlet holes 201. On this basis, the upper ends of a plurality of the air channels 202 are connected to an air supply device, so as to spray air into a plurality of the air channels 202 through the connected air supply device. The sprayed gas can rush out from the lower ends of a plurality of the air channels 202, so as to mix with the glue sprayed out from a plurality of the glue outlet holes 201, so as to generate atomized glue particles, and evenly diffuse around from the outer wall of the lower part of the nozzle body 20. In this way, the nozzle body 20 of this application can be inserted into a product with a hollow cylindrical structure to a preset depth to perform atomized jet dispensing on its inner wall.

[0058] For the use of this application, it will obviously have the following technical effects:

[0059] On the one hand, through the optimized design of the structure of the nozzle body 20, the generated atomized glue particles can be evenly diffused around from its lower outer wall. In this way, the nozzle body 20 of this application can be inserted into a product with a hollow cylindrical structure to a preset depth, and atomized jet dispensing can be performed on its inner wall in an annular spray manner. For related dispensing operations, the uniformity and rapidity of glue spraying per unit area can be satisfied, so that compared with the traditional single-way jet dispensing method, the operation efficiency can be effectively improved.

[0060] On the other hand, since the lower ends of a plurality of the air channels 202 are correspondingly communicated with a plurality of the glue outlet holes 201, it is possible to better confine the multi-channel airflows to correspondingly blow to a plurality of the glue outlet holes 201. That is to say, the airflows blown to a plurality of the glue outlet holes 201 can be increased, so that the atomization effect of the glue discharged from a plurality of the glue outlet holes 201 is good under the impact of a larger airflow, and the glue particles diffused around will be very uniform. As a result, when finally falling on the inner wall of the product with a hollow cylindrical structure, the glue spraying can be made more uniform.

[0061] Furthermore, through the above optimized design, the overall structure of this application has strong practicability and good use effect.

[0062] Further, in specific implementation, as shown in Figure 2 and Figure 4 , according to an embodiment of the present invention, a plurality of the air channels 202 are all spirally distributed, their upper ends all form air inlets, and their lower ends all form air outlets and are correspondingly communicated with a plurality of the glue outlet holes 201.

[0063] In this regard, it is clear that in this application, multiple air channels 202 are optimized to be spiral. In this way, the gas discharged from the exhaust port at its lower end does not directly go downward to correspondingly align with multiple glue outlet holes 201, but all go obliquely or as horizontally as possible to correspondingly align with multiple glue outlet holes 201. Thus, the glue discharged from multiple glue outlet holes 201 can be atomized as much as possible along the oblique or horizontal direction under the action of the oblique or horizontal air flow and diffuse horizontally around, making the overall use effect of this application better.

[0064] Furthermore, in specific implementation, continue to refer to Figure 2 and Figure 4 As shown, according to an embodiment of the present invention, this application further includes an air sleeve 30 with an inner diameter larger than the outer diameter of the glue guiding tube 10;

[0065] Wherein, the outer walls of multiple air channels 202 are open structures from top to bottom; the air sleeve 30 is sleeved and fixed outside the nozzle body 20 to seal the non-air inlet and exhaust port areas of multiple air channels 202.

[0066] In this regard, it should be clear that for the spiral air channel 202, if its outer wall is a closed structure, it is not easy to mold and demold during design. Therefore, in this application, the outer walls of multiple air channels 202 are designed to be open structures from top to bottom, making it easy to mold and demold during design, and using the provided air sleeve 30 to enclose and seal its outer wall, so that they can all maintain good airtightness and do not affect their independent use.

[0067] In addition, in this technical solution, according to an embodiment of the present invention, multiple glue outlet holes 201 are located in the middle and lower parts of the outer wall of the nozzle body 20; the lower end of the nozzle body 20 is a sealed structure and is convexly provided with a glue-blocking outer edge 203, and the outer diameter of the glue-blocking outer edge 203 is slightly larger than the outer diameter of the air sleeve 30;

[0068] Wherein, the air sleeve 30 encloses multiple glue outlet holes 201, and there is a certain gap A between its lower peripheral edge and the upper end surface of the glue-blocking outer edge 203 to form an annular spray port 204.

[0069] Thus, by setting the glue-blocking outer edge 203, the glue discharged from multiple glue outlet holes 201 can be further atomized as much as possible along the oblique or horizontal direction under the action of the oblique or horizontal air flow and the blocking of the glue-blocking outer edge 203 and diffuse horizontally around, effectively improving the overall use effect of this application.

[0070] Moreover, in this technical solution, still refer to Figure 2 andFigure 4 As shown, according to an embodiment of the present utility model, the outer diameter of the lower end of the nozzle body 20 gradually increases from top to bottom below the plurality of glue outlet holes 201 to form a diversion slope 205 for guiding the atomized glue liquid particles downward, and there is a certain gap B between the lower end of the diversion slope 205 and the inner wall of the lower end of the air sleeve 30.

[0071] Thus, by providing the diversion slope 205, the atomized glue liquid particles can be better guided to the annular spray port 204, so that they can be driven to spray out horizontally as much as possible from the annular spray port 204 in a circular spray manner more quickly.

[0072] Furthermore, through the above optimized design, the overall use effect of the present application can be further improved.

[0073] Again, during specific implementation, still referring to Figure 2 and Figure 4 As shown, according to an embodiment of the present utility model, the upper end of the air sleeve 30 extends upward and forms a reduced opening 301 to hermetically enclose the outer side of the upper end of the glue guiding tube 10, and a plurality of air inlet holes A3011 penetrating through the outer wall of the reduced opening 301 to the inside of the air sleeve 30 are evenly opened.

[0074] Obviously, for the above-mentioned present application, a chamber for guiding the flow of gas is formed between the inner wall of the middle part of the air sleeve 30 and the outer wall of the middle part of the glue guiding tube 10, so that under the hermetic enclosure of the reduced opening 301, the gas is not easy to flow upward in this chamber.

[0075] At the same time, a plurality of air inlet holes A3011 penetrating through the outer wall of the reduced opening 301 to the inside of the air sleeve 30 are evenly opened, so that it is convenient for the gas to be introduced into the chamber through the plurality of air inlet holes A3011.

[0076] Moreover, during specific implementation, referring to Figures 1 to 4 As shown, according to an embodiment of the present utility model, the present application further includes a funnel-shaped connector 40 and a fixing nut 50;

[0077] Among them, the funnel-shaped connector 40 is fixedly arranged outside the upper part of the air sleeve 30, a step surface A401 is formed in its lower part, a fixing hole 402 adapted to insert the upper end of the air sleeve 30 and the upper end of the glue guiding tube 10 is opened in the middle of the step surface A401, and a plurality of air inlet channels 403 corresponding to and communicating with the plurality of air inlet holes A3011 are evenly opened at the periphery of the step surface A401; the fixing nut 50 is rotatably sleeved outside the upper part of the funnel-shaped connector 40.

[0078] Thus, when using the present application, connect the upper end of the spray valve ring-jet porous nozzle 1000 of the present application to a glue supply device with a pneumatic injection valve. When conveying glue to it through the connected glue supply device with a pneumatic injection valve, the connected glue supply device with a pneumatic injection valve will have a liquid guide connector. In this way, insert the provided funnel-shaped connector 40 into the corresponding liquid guide connector, and threadedly connect the provided fixing nut 50 to the outside of the corresponding liquid guide connector, then the present application can be easily used.

[0079] It should be noted here that the glue flows into the funnel-shaped connector 40 and enters the glue guide tube 10 through the funnel-shaped connector 40. The gas supplied by the external gas supply device is conducted downward through the plurality of air inlet channels 403, and sequentially passes through the plurality of air inlet holes A3011, the inner chamber of the air sleeve 30, the plurality of air flow channels 202 and the annular spray orifice 204 and flows out.

[0080] Furthermore, in specific implementation, continue to refer to Figures 1 to 4 As shown, according to an embodiment of the present invention, the present application further includes a hollow valve core 60 with both upper and lower ends formed as openings.

[0081] Wherein, an upper inner part of the funnel-shaped connector 40 is annularly provided with a step surface B404; the outer diameter of the hollow valve core 60 is slightly smaller than the inner diameter of the step surface B404, and its lower end is formed into a constricted mouth 601 to be adapted to abut against the upper end of the glue guide tube 10 and communicate with the upper end of the glue guide tube 10. A circumferential lifting part 602 is annularly provided downward on the outer wall of the middle part of the hollow valve core 60. The lower bottom surface of the lifting part 602 is supported by the step surface B404, and a plurality of air inlet holes B603 communicating with the plurality of air inlet channels 403 are uniformly opened on the upper end surface of the lifting part 602 near its inner edge and penetrate through to its lower bottom surface.

[0082] Thus, it can be clearly seen that when actually using the present application, the glue first enters the hollow valve core 60, and then flows from the hollow valve core 60 into the glue guide tube 10 clamped in the lower part of the funnel-shaped connector 40. The gas supplied by the external gas supply device is conducted to the plurality of air inlet channels 403 through the plurality of air inlet holes B603, and then is conducted downward according to the path described in the previous paragraph.

[0083] And, as a preferred solution, still refer to Figures 1 to 4 As shown, according to an embodiment of the present invention, the present application further includes a sealing ring 70.

[0084] Wherein, a clamping groove 405 is formed around the middle of the stepped surface A401 and extends downward around the fixing hole 402. The sealing ring 70 is clamped in the clamping groove 405 and is located between the lower end of the hollow valve core 60 and the upper end of the guide rubber tube 10 to hermetically enclose the contacting part thereof.

[0085] Thus, it can be clearly seen that by providing the sealing ring 70, the contacting part (connected part) between the lower end of the hollow valve core 60 and the upper end of the guide rubber tube 10 can be hermetically enclosed, which can preferably prevent glue leakage outward and gas entry inward at this part, making the application more stable and reliable in use.

[0086] It should be added that in specific implementation, according to the spray valve annular spray multi-orifice nozzle 1000 provided by the embodiment of the present utility model, the guide rubber tube 10 is preferably made of Teflon material to make its inner wall smooth and the adhesiveness of the glue liquid poor, so that the glue liquid flowing down inside it is not easily adhered to its inner wall to cause blockage, making the service life of this application long.

[0087] Other embodiments etc. are not exemplified here.

[0088] In summary, in specific implementation, the spray valve annular spray multi-orifice nozzle 1000 provided by this application optimizes the structure of the nozzle body 20, so that the atomized glue liquid particles generated can uniformly diffuse from its lower outer wall to the surrounding. In this way, the nozzle body 20 of this application can be inserted into a product with a hollow cylindrical structure to a preset depth and perform atomized jet dispensing on its inner wall in an annular spray manner. For related dispensing operations, it can meet the uniformity and rapidity of glue liquid spraying per unit area, effectively improving the operation efficiency compared with the traditional unidirectional jet dispensing method.

[0089] Moreover, since the lower ends of the plurality of air flow channels 202 are correspondingly communicated with the plurality of glue outlet holes 201, it can preferably confine multiple airflows to correspondingly blow to the plurality of glue outlet holes 201. That is to say, the airflows blowing to the plurality of glue outlet holes 201 can be increased, so that the glue liquid discharged from the plurality of glue outlet holes 201 has a good atomization effect under the impact of a larger airflow, and the glue liquid particles diffusing to the surrounding will be very uniform. As a result, when finally falling on the inner wall of the product with a hollow cylindrical structure, the glue liquid spraying can be made more uniform.

[0090] In addition, the present application optimizes the plurality of the air flow channels 202 so that they are all spiral. In this way, the gas discharged from the exhaust ports at their lower ends does not directly go downward to correspondingly align with the plurality of the glue outlet holes 201, but all obliquely or as horizontally as possible to correspondingly align with the plurality of the glue outlet holes 201. In this way, the glue discharged from the plurality of the glue outlet holes 201 can be atomized as much as possible along the oblique or horizontal direction under the action of the oblique or horizontal air flow and diffuse horizontally around, making the overall use effect of the present application better.

[0091] Furthermore, the spray valve ring spray type multi-hole nozzle 1000 provided by the present application is indeed extremely practical and has an excellent use effect.

[0092] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0093] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the specification and drawings of the present utility model under the inventive concept of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A spray valve ring-spray type multi-orifice nozzle, characterized in that, It includes a glue guiding tube and a spray head body with a hollow structure; The upper end of the spray head body is detachably inserted outside the lower end of the glue guiding tube, and a plurality of glue outlet holes penetrating into its interior are evenly annularly arranged on the outer wall of the lower part of the spray head body. A plurality of air flow channels corresponding to and communicating with the plurality of glue outlet holes are evenly arranged on the outer wall of the spray head body from top to bottom. The lower ends of the plurality of air flow channels horizontally correspond to and non-block the plurality of glue outlet holes.

2. The spray valve ring spray type porous nozzle according to claim 1, characterized in that, The plurality of air flow channels are all spirally distributed, with air inlets formed at their upper ends and air outlets formed at their lower ends and correspondingly communicating with the plurality of glue outlet holes.

3. The spray valve annular spray multi-orifice nozzle according to claim 1, wherein It also includes an air sleeve with an inner diameter larger than the outer diameter of the glue guiding tube; The outer walls of the plurality of air flow channels are all open structures from top to bottom; the air sleeve is sleeved and fixed outside the spray head body to seal the non-air inlet and air outlet areas of the plurality of air flow channels.

4. The spray valve ring spray type porous nozzle according to claim 3, characterized in that, The plurality of glue outlet holes are located in the middle and lower parts of the outer wall of the spray head body; the lower end of the spray head body is a sealed structure and is convexly provided with a glue blocking outer edge. The outer diameter of the glue blocking outer edge is slightly larger than the outer diameter of the air sleeve; The air sleeve encloses the plurality of glue outlet holes, and there is a certain gap A between its lower peripheral edge and the upper end surface of the glue blocking outer edge to form an annular spray opening.

5. The annular spray valve and multi-orifice spray head according to claim 4, characterized in that, The outer diameter of the lower end of the spray head body gradually increases from top to bottom below the plurality of glue outlet holes to form a diversion slope for guiding the atomized glue liquid particles downward. There is a certain gap B between the lower end of the diversion slope and the inner wall of the lower end of the air sleeve.

6. The annular spray valve multi-orifice spray head according to claim 3, characterized in that, The upper end of the air sleeve extends upward and forms a reduced opening to be hermetically sleeved and enclosed outside the upper end of the glue guiding tube. A plurality of air inlet holes A penetrating into the air sleeve are evenly arranged on the outer wall of the reduced opening.

7. The spray valve ring-spray type porous nozzle according to claim 6, characterized in that, It also includes a funnel-shaped connector and a fixing nut; The funnel-shaped connector is fixedly arranged outside the upper part of the air sleeve. A step surface A is formed in its lower inner part. A fixing hole adapted to insert the upper end of the air sleeve and the upper end of the glue guiding tube is opened in the middle of the step surface A. A plurality of air inlet channels corresponding to and communicating with the plurality of air inlet holes A are evenly arranged on the periphery of the step surface A; the fixing nut is rotatably sleeved outside the upper part of the funnel-shaped connector.

8. The ring-spray type porous nozzle of the spray valve according to claim 7, characterized in that, It also includes a hollow valve core with open upper and lower ends; A step surface B is annularly arranged in the upper inner part of the funnel-shaped connector; the outer diameter of the hollow valve core is slightly smaller than the inner diameter of the step surface B. Its lower end is formed into a constricted opening to be adapted to abut against the upper end of the glue guiding tube and communicate with the upper end of the glue guiding tube. A ring of lifting parts is annularly arranged downward on the outer wall of the middle part of the hollow valve core. The lower bottom surface of the lifting parts is supported by the step surface B, and a plurality of air inlet holes B penetrating from the upper end surface near the inner edge of the lifting parts to its lower bottom surface to communicate with the plurality of air inlet channels are evenly arranged.

9. The spray valve ring spray type porous nozzle according to claim 8, characterized in that, It also includes a sealing ring; A clamping groove is opened downward around the fixing hole in the middle of the step surface A. The sealing ring is clamped in the clamping groove and is located between the lower end of the hollow valve core and the upper end of the glue guiding tube to hermetically enclose the abutted parts.

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