A dual zone spray device

Abstract

The application discloses a double-zone spraying device, comprising a nozzle, a water tank and a liquid delivery assembly, the number of the nozzle is two and is sequentially arranged along the direction of the conveying of the digital product with a screen, the inside of the water tank is provided with a partition plate, the water tank is divided into a cleaning liquid cavity and a pure water cavity by the partition plate, the cleaning liquid cavity is used for storing cleaning liquid, the pure water cavity is used for storing pure water, the number of the liquid delivery assembly is two and is arranged in the two nozzles respectively, the double-zone spraying device is sequentially arranged by two atomizing nozzles along the conveying direction of the digital product with a screen, during work, the front nozzle sprays cleaning liquid mist first, the oil stains on the screen surface are dissolved sufficiently, after 0.5-1 seconds, the rear nozzle sprays pure water mist, the dissolved oil stains and impurities are taken away from the screen surface by the flowing characteristics of the pure water mist, without additional multiple wiping steps, the operation process and operation time are greatly reduced, and the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of spraying equipment technology, and in particular to a dual-zone spraying device. Background Technology

[0002] In the production, assembly, and after-sales screen protector application of digital products with screens, the cleanliness of the screen surface directly affects the application effect and the product's appearance. Therefore, effective cleaning of the screen before applying the screen protector is a crucial step. Currently, the industry generally uses traditional manual or simple equipment methods for cleaning digital products with screens before applying screen protectors. The specific process usually involves spraying cleaning fluid onto the screen surface, then wiping the screen manually or mechanically to remove surface dirt before proceeding with the screen protector application. However, this traditional cleaning method has obvious limitations and shortcomings. On the one hand, the cleaning effect and applicable scenarios are limited. This method can only deal with situations where the screen surface is lightly contaminated. When the screen has more serious oil stains (such as fingerprints, grease, processing coolant residue, etc. left over from production or use), it is difficult to completely dissolve and remove the oil stains by simply spraying the cleaning solution and wiping once. This can easily leave stains on the screen surface, which will affect the adhesion of the subsequent screen protector and even cause problems such as bubbles and lifting, thus reducing product quality. On the other hand, the cleaning efficiency is low. The traditional method requires an additional special wiping step. Whether it is manual or mechanical wiping, it will prolong the overall operation process and operation time. Especially in the case of large-scale production, it is difficult to meet the needs of efficient operation. In addition, manual wiping also has the risks of poor operation consistency and easy to scratch the screen. Utility Model Content

[0003] The purpose of this application is to propose a dual-zone spraying device to solve the problems of traditional cleaning methods, which can only handle light pollution, are difficult to remove fingerprints, grease and other heavy oil stains, easily leave stains that affect film application, cause bubbles and edge lifting, and require multiple additional wiping, resulting in low efficiency and difficulty in adapting to large-scale production.

[0004] To achieve this objective, the following technical solution is adopted in this application: A dual-zone spraying device includes two nozzles arranged sequentially along the direction of conveying digital products with screens. A water tank, wherein the interior of the water tank is provided with a partition, the partition dividing the interior of the water tank into a cleaning liquid chamber and a pure water chamber, the cleaning liquid chamber being used to store cleaning liquid and the pure water chamber being used to store pure water; The infusion assembly comprises two components, each disposed on one of the two nozzles, and is also connected to a cleaning fluid chamber and a pure water chamber on the water tank. The infusion assembly is used to deliver the cleaning fluid or pure water inside the water tank to the nozzle, so that the nozzle sprays the cleaning fluid or pure water onto the digital product with a screen.

[0005] Optionally, the infusion assembly connected to the cleaning fluid chamber of the water tank is further provided with a filter structure, which is used to filter the cleaning fluid.

[0006] Optionally, the infusion assembly includes a water pump, an inlet pipe, and an outlet pipe; the inlet pipe is installed between the water pump inlet and the cleaning liquid chamber or pure water chamber on the water tank, and the outlet pipe is installed between the water pump outlet and one of the nozzles.

[0007] Optionally, the filtration structure includes a filter housing, a frame, and a filter screen; the filter housing is connected and installed on the water inlet pipe, the frame is disposed inside the filter housing, the filter screen is installed on the frame, and the filter screen is used to filter the flowing cleaning liquid.

[0008] Optionally, the infusion assembly connected to the cleaning fluid chamber of the water tank is further provided with a diversion structure. One end of the diversion structure is connected to the infusion assembly, and the other end is connected to the cleaning fluid chamber and the pure water chamber of the water tank, respectively. The diversion structure is used to control the infusion assembly connected to the cleaning fluid chamber of the water tank to be connected to the cleaning fluid chamber or the pure water chamber.

[0009] Optionally, the diversion structure includes a three-way electric valve, a cleaning fluid pipeline, and a pure water pipeline; one port of the three-way electric valve is connected to the inlet pipe of the infusion assembly, one end of the cleaning fluid pipeline is connected to the other port of the three-way electric valve, and the other end of the cleaning fluid pipeline is connected to the cleaning fluid chamber of the water tank; one end of the pure water pipeline is connected to the third port of the three-way electric valve, and the other end of the pure water pipeline is connected to the pure water chamber of the water tank; the three-way electric valve is used to control the on / off connection between the inlet pipe, the cleaning fluid pipeline, and the pure water pipeline, so as to achieve selective connection between the infusion assembly and the cleaning fluid chamber or the pure water chamber.

[0010] Optionally, the nozzle is an atomizing nozzle.

[0011] Optionally, the nozzle is provided with a linear adjuster, which is used to adjust the height of the nozzle along a direction perpendicular to the conveying direction of the digital product with screen.

[0012] Optionally, the water tank is also provided with two replenishment ports corresponding to the cleaning fluid chamber and the pure water chamber.

[0013] Optionally, both the cleaning liquid chamber and the pure water chamber inside the water tank are equipped with liquid level sensors.

[0014] Compared to existing technologies, the beneficial effects of this application are: 1. Two atomizing nozzles are set sequentially along the conveying direction of digital products with screens. During operation, the front nozzle first sprays cleaning liquid water mist to fully dissolve the oil stains on the screen surface. After an interval of 0.5-1 seconds, the rear nozzle sprays pure water mist. The flow characteristics of the pure water mist carry the dissolved oil stains and impurities away from the screen surface. The entire process does not require multiple additional wiping steps, greatly reducing the operation process and time, and significantly improving cleaning efficiency. 2. The infusion assembly on the cleaning fluid side is also equipped with a filter screen structure, which can filter impurities and particles in the cleaning fluid, prevent clogging of the infusion pipes and nozzles, and also prevent impurities from being sprayed onto the screen with the cleaning fluid, causing secondary pollution. 3. By switching to pure water delivery through a diversion structure, the infusion components and nozzles on the cleaning fluid side are rinsed with pure water to remove residual cleaning fluid and impurities, preventing them from drying out, clumping, and clogging parts, thus extending the service life of the device and reducing manual maintenance costs. Attached Figure Description

[0015] The accompanying drawings further illustrate this application, but the content of the drawings does not constitute any limitation on this application.

[0016] Figure 1 This is a schematic diagram of the dual-zone spraying device from a top-down perspective; Figure 2 This is a cross-sectional view of the water tank of a dual-zone spraying device. Only part of the inlet pipe is shown; the rest has been cut off. Figure 3 This is a schematic diagram of the dual-zone spraying device from a frontal viewing angle; Figure 4 This is a cross-sectional view of the filter structure of the dual-zone spraying device, with only the filter housing of the filter structure cut out. Figure 5 This is a schematic diagram of the flow-diverting structure of the dual-zone spraying device, as well as the structure of the two sets of nozzles and the infusion assembly.

[0017] In the attached diagram: 1. Nozzle; 2. Water tank; 21. Cleaning fluid chamber; 22. Pure water chamber; 3. Baffle; 4. Infusion assembly; 41. Water pump; 42. Inlet pipe; 43. Outlet pipe; 5. Filtration structure; 51. Filter housing; 52. Frame; 53. Filter screen; 6. Diversion structure; 61. Three-way electric valve; 62. Cleaning fluid pipeline; 63. Pure water pipeline; 7. Linear positioner; 8. Replenishment port; 9. Liquid level sensor. Detailed Implementation

[0018] The embodiments of this application are described in detail below, examples of which are shown in the accompanying drawings, wherein 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 with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise expressly and specifically defined.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0022] In this embodiment, by Figure 1-5 A dual-zone spraying device is provided, comprising nozzles 1, a water tank 2, and an infusion assembly 4. There are two nozzles 1 arranged sequentially along the direction of conveying the digital product with a screen. The conveying of the digital product with a screen is mainly achieved by means of belt conveyor, slide table, etc. Taking belt conveyor as an example, the two nozzles 1 can be arranged at intervals along the direction of belt conveyor. Furthermore, the nozzles 1 are atomizing nozzles, which can convert cleaning liquid or pure water into water mist to achieve uniform spraying of the digital product screen, improve cleaning efficiency and cleaning effect, and make it more convenient to use.

[0023] Traditionally, before applying screen protectors to digital products with screens, it's necessary to spray the product with a cleaning solution, wipe it down, and then apply the screen protector. However, this method is only suitable for products with relatively light contamination, and the cleaning effect and efficiency are not ideal. Therefore, for screens with heavy oil stains, a new method is used: first, a cleaning solution mist is sprayed to dissolve the oil; then, the product continues to be cleaned, and a pure water mist is sprayed onto it. This pure water mist carries the cleaned stains away from the screen surface, reducing subsequent wiping steps and improving cleaning efficiency. For details, refer to... Figures 1-2 As shown, the water tank 2 is equipped with a partition 3 inside, which divides the interior of the water tank 2 into a cleaning liquid chamber 21 and a pure water chamber 22. The cleaning liquid chamber 21 and the pure water chamber 22 are used to store cleaning liquid and pure water, respectively. There are two infusion components 4, which are respectively installed on two nozzles 1. The infusion components 4 are also connected to the cleaning liquid chamber 21 and the pure water chamber 22 on the water tank 2. The infusion components 4 are used to deliver the cleaning liquid or pure water inside the water tank 2 to the nozzles 1, so that the nozzles 1 spray cleaning liquid or pure water onto the digital product with screen.

[0024] Specifically, during the cleaning and water misting operation of digital products with screens, cleaning fluid is first injected into the cleaning fluid chamber 21 of the water tank 2, and pure water is injected into the pure water chamber 22. The two infusion components 4 are respectively connected to the corresponding nozzles 1 and the chambers of the water tank 2. When the digital product with screen moves to the spray area along the conveying direction, the infusion component 4 connected to the cleaning fluid chamber 21 delivers the cleaning fluid to the front nozzle 1, which is positioned along the conveying direction. This nozzle 1 first sprays a water mist made of cleaning fluid onto the screen of the digital product to dissolve oil stains on the screen surface. After an interval of 0.5-1 second, the digital product with screen continues to be conveyed. Subsequently, the infusion component 4 connected to the pure water chamber 22 delivers pure water to the rear nozzle 1, which is positioned along the conveying direction. The rear nozzle 1 sprays a pure water mist made of pure water onto the digital product with screen. Because the two nozzles 1 are spaced apart... The staggered layout allows pure water mist and cleaning solution mist to be layered sequentially on the surface of digital products with screens. The flow characteristics of the pure water mist carry away oil and impurities that have detached from the screen after cleaning. At the same time, the pure water mist also pre-wets and penetrates the screen surface, keeping it moderately moist. During subsequent wiping, the moist environment reduces the adhesion of stains to the screen, making it easy to remove residual impurities without vigorous wiping. This reduces the possibility of screen scratches and improves the thoroughness of cleaning, solving the problems of traditional wiping being laborious, prone to screen damage, and incomplete cleaning.

[0025] In summary, referring to Figures 1-2 As shown, by arranging two nozzles 1 sequentially and staggered along the conveying direction of the digital product with a screen, and cooperating with the infusion component 4, the cleaning solution mist and pure water mist are sprayed and superimposed at intervals of 0.5-1 seconds. This not only fully dissolves the oil stains on the screen through the cleaning solution mist, but also removes the oil stains and impurities after cleaning with the pure water mist. Efficient cleaning can be completed without the need for multiple wiping steps, reducing the operation process and time, and improving cleaning efficiency. At the same time, the cleaning solution and pure water are stored in independent chambers and delivered by independent infusion components 4, avoiding the mixing and contamination of the two liquids.

[0026] To meet the sequential spraying requirements of cleaning fluid mist and pure water mist, and considering structural simplicity and ease of installation and maintenance, a pump-type infusion assembly 4 is adopted. For details, please refer to... Figure 1 As shown, the infusion assembly 4 includes a water pump 41, an inlet pipe 42, and an outlet pipe 43. The inlet pipe 42 is installed between the inlet of the water pump 41 and the cleaning fluid chamber 21 or the pure water chamber 22 on the water tank 2. One end of the inlet pipe 42 extends into the interior of the water tank 2. The outlet pipe 43 is installed between the outlet of the water pump 41 and one of the nozzles 1.

[0027] More specifically, during the cleaning and atomization spraying of the digital product with a screen, the water pumps 41 of the two infusion components 4 are respectively connected to the cleaning liquid chamber 21 and the pure water chamber 22 of the water tank 2 through the water inlet pipe 42. When the digital product with a screen enters the spray area along the conveying direction, the water pump 41 on the cleaning liquid side is started first, drawing the cleaning liquid from the cleaning liquid chamber 21 through the water inlet pipe 42, and then conveying it to the front nozzle 1 through the water outlet pipe 43 to form a water mist made of cleaning liquid, which is sprayed on the screen surface of the digital product with a screen to clean the screen surface and dissolve screen oil stains. After a preset interval, the digital product with a screen continues to be conveyed, and the water pump 41 on the pure water side is started, drawing pure water from the pure water chamber 22 through the water inlet pipe 42 in the same way, and conveying it to the rear nozzle 1 through the water outlet pipe 43 to form a water mist made of pure water. Through the independent start and stop control of the two water pumps 41, the sequential spraying of cleaning water mist and pure water mist is realized, adapting to the need for the sequential superposition of dual water mists.

[0028] Furthermore, the pump-type infusion assembly 4, comprising a water pump 41, an inlet pipe 42, and an outlet pipe 43, allows for precise sequential spraying of cleaning fluid mist and pure water mist through independent control of two water pumps 41, meeting the core requirement of sequential superposition of the two mists. Simultaneously, this structure consists only of the water pump 41, inlet pipe 42, and outlet pipe 43, with a small number of components and a simple structure. It eliminates the need for complex transmission or control mechanisms. Installation is simple: connect the inlet pipe 42 to the water tank 2 cavity and the outlet pipe 43 to the nozzle 1. Subsequent maintenance only requires inspection or replacement of the water pump 41 and the pipes, making operation convenient. The water pump 41 provides stable delivery power, unaffected by changes in the water level in the water tank 2, ensuring consistent delivery volume and pressure of the cleaning fluid and pure water. Compared to other complex infusion structures, this design balances functional requirements and practicality, reducing the overall cost and maintenance difficulty of the device.

[0029] Reference Figure 3 As shown, in order to filter impurities and particles in the cleaning solution, a filter structure 5 is also provided on the infusion assembly 4 which is connected to the cleaning solution chamber 21 of the water tank 2. The filter structure 5 is used to filter the cleaning solution to avoid clogging of the pipes or nozzles 1 of the infusion assembly 4, ensuring that the cleaning solution can be delivered smoothly and form a uniform water mist, while preventing impurities from being sprayed onto the screen with the cleaning solution and causing secondary pollution, thus ensuring the cleaning effect.

[0030] Furthermore, considering the simplicity and low cost, filter structure 5 (using a mesh filter) was chosen. For details, please refer to... Figure 4As shown, the filter structure 5 includes a filter housing 51, a frame 52, and a filter screen 53. Both ends of the filter housing 51 are connected to flange interfaces. The inlet pipe 42 of the infusion assembly 4, which is connected to the cleaning liquid chamber 21 of the water tank 2, is divided into two sections. The filter housing 51 is connected and installed between the two sections of the inlet pipe 42 through the two flange interfaces. The frame 52 is set inside the filter housing 51, and the middle position of the frame 52 is hollow. The filter screen 53 is installed in the hollow part in the middle of the frame 52, and the filter screen 53 is used to filter the flowing cleaning liquid.

[0031] More specifically, when the cleaning fluid is delivered from the cleaning fluid chamber 21 through the inlet pipe 42, it first flows through the filter screen 53 fixed by the frame 52 inside the filter housing 51, which intercepts and filters impurities and particles in the cleaning fluid. The filtered cleaning fluid continues to flow along the inlet pipe 42 to the water pump 41, and finally is delivered to the nozzle 1 through the outlet pipe 43 to form a cleaning water mist. Furthermore, the filter structure 5, composed of the filter housing 51, frame 52, and filter screen 53, directly intercepts impurities through the filter screen 53. The structure is simple and has few parts, which can reduce manufacturing costs.

[0032] Furthermore, after prolonged filtration, a large amount of impurities will accumulate on the filter screen 53, affecting the filtration effect and efficiency. Therefore, the filter housing 51 is composed of two detachable housings with a sealed connection in the middle. The frame 52 can be detachably installed on either housing. Considering the filtration effect, multiple frames 52 and filter screens 53 can be installed. Therefore, when it is necessary to replace or clean the filter screen 53, it is only necessary to open the two housings and remove the frame 52 and filter screen 53. The filter screen 53 can then be replaced or cleaned, thus maintaining the purity of the cleaning solution for a long time, preventing impurities from clogging the pipes or nozzle 1, ensuring smooth spraying and cleaning effect, and balancing low cost and practicality.

[0033] Reference Figure 1 and Figure 5 As shown, after the device stops operating, a small amount of cleaning fluid and impurities will remain on the infusion assembly 4 and the nozzle 1. In order to flush away the residual cleaning fluid and impurities and prevent these residues from drying and clogging the components, a diversion structure 6 is also provided on the infusion assembly 4, which is connected to the cleaning fluid chamber 21 of the water tank 2. One end of the diversion structure 6 is connected to the infusion assembly 4, and the other end is connected to the cleaning fluid chamber 21 and the pure water chamber 22 of the water tank 2 respectively. The diversion structure 6 is used to control the infusion assembly 4 connected to the cleaning fluid chamber 21 of the water tank 2 to be connected to either the cleaning fluid chamber 21 or the pure water chamber 22.

[0034] Specifically, during normal operation, the diversion structure 6 connects the cleaning fluid chamber 21 to the corresponding infusion assembly 4, allowing the cleaning fluid to be delivered to the nozzle 1 via the infusion assembly 4. After the device is shut down, the diversion structure 6 switches to connect the pure water chamber 22 to the infusion assembly 4, and pure water is delivered to the original cleaning fluid spray nozzle, water pump 41, and pipeline via the infusion assembly 4 to flush away any remaining cleaning fluid and impurities, thus completing self-cleaning. The function of the infusion assembly 4 is to achieve the switching and connection between cleaning fluid and pure water through the diversion structure 6. After the device is shut down, pure water is used to self-clean the cleaning fluid spray nozzle, water pump 41, and pipeline, effectively removing residual cleaning fluid and impurities, preventing them from drying, caking, and clogging components. It also avoids residual cleaning fluid corroding pipelines or affecting the cleaning effect during the next use. No manual disassembly and cleaning is required, improving the ease of maintenance and service life of the device. Furthermore, the function switching is achieved solely through the diversion structure 6, without adding too many complex components, balancing practicality and structural simplicity.

[0035] Considering the need for precise control over the switching between cleaning solution and pure water, as well as ease of operation, an electrically controlled diversion structure 6 is adopted. For details, please refer to... Figure 2 and Figure 5 As shown, the diversion structure 6 includes a three-way electric valve 61, a cleaning fluid pipeline 62, and a pure water pipeline 63. One port of the three-way electric valve 61 is connected to the inlet pipe 42 in the infusion assembly 4. One end of the cleaning fluid pipeline 62 is connected to the other port of the three-way electric valve 61, and the other end of the cleaning fluid pipeline 62 is connected to the cleaning fluid chamber 21 of the water tank 2. The other end of the cleaning fluid pipeline also extends into the interior of the cleaning fluid chamber 21. One end of the pure water pipeline 63 is connected to the third port of the three-way electric valve 61, and the other end of the pure water pipeline 63 is connected to the pure water chamber 22 of the water tank 2. The other end of the pure water pipeline 63 also extends into the interior of the pure water chamber 22 of the water tank 2. The three-way electric valve 61 is used to control the opening and closing of the inlet pipe 42, the cleaning fluid pipeline 62, and the pure water pipeline 63, so as to achieve selective connection between the infusion assembly 4 and the cleaning fluid chamber 21 or the pure water chamber 22.

[0036] More specifically, during normal operation, the three-way electric valve 61 controls the connection between the water inlet pipe 42 and the cleaning fluid pipe 62. The cleaning fluid enters the infusion assembly 4 through the cleaning fluid pipe 62, the three-way electric valve 61, and the water inlet pipe 42, and is finally sprayed out by the nozzle 1. After the device is turned off, the three-way electric valve 61 switches to connect the water inlet pipe 42 with the pure water pipe 63. The pure water enters the infusion assembly 4 through the pure water pipe 63, the three-way electric valve 61, and the water inlet pipe 42 to flush the nozzle, water pump 41, and pipes. After completing the self-cleaning process, the device is turned off.

[0037] In summary, the electrically controlled diversion structure 6, employing a three-way electric valve 61, can precisely control the switching between cleaning fluid and pure water, meeting different needs for normal operation and self-cleaning. Furthermore, the electric control eliminates the need for manual operation, enhancing ease of use. The cleaning fluid pipeline 62 and the pure water pipeline are respectively connected to their corresponding chambers, ensuring a clear liquid delivery path and preventing flow mixing. The overall structure is simple and compact, with rapid switching response, efficiently achieving self-cleaning, preventing component blockage, extending device lifespan, and balancing precise control with ease of operation.

[0038] The spray range will vary depending on the height of nozzle 1. Therefore, to adapt to digital products with screens of different thicknesses, such as thin mobile phones and thick tablets, refer to... Figure 1 As shown, the nozzle 1 is equipped with a linear adjuster 7. The linear adjuster 7 is used to adjust the height of the nozzle 1 along the direction perpendicular to the conveying direction of the digital product with screen. By adjusting the height of the nozzle 1, the water mist can be accurately sprayed on the screen surface, avoiding water mist spraying off-center, not spraying enough, or spraying too much due to different product thicknesses, thus ensuring the cleaning and water mist dispersal effect.

[0039] Meanwhile, in order to monitor the remaining levels of cleaning solution and pure water in real time, refer to Figure 2 As shown, liquid level sensors 9 are installed in both the cleaning liquid chamber 21 and the pure water chamber 22 inside the water tank 2. The liquid level sensors 9 can detect the liquid level in the cleaning liquid chamber 21 and the pure water chamber 22 inside the water tank 2. If the liquid level is too low, it can remind you to replenish it in time, so as to avoid the device from being interrupted due to insufficient liquid, affecting the cleaning and water mist dispersing effect, and also preventing the water pump 41 from running dry and being damaged.

[0040] Furthermore, the water tank 2 is equipped with two replenishment ports 8 corresponding to the cleaning fluid chamber 21 and the pure water chamber 22. The replenishment ports 8 are like bottle caps. Therefore, when the liquid level in the cleaning fluid chamber 21 and the pure water chamber 22 inside the water tank 2 is too low, the corresponding cap can be opened to add the required liquid to the cleaning fluid chamber 21 or the pure water chamber 22.

[0041] In summary, this dual-zone spraying device is a practical tool specifically designed for cleaning digital products with screen protectors before applying them. It effectively solves the problems of low efficiency and poor results associated with traditional cleaning methods. Specifically, the device is equipped with two atomizing nozzles 1, arranged sequentially along the conveying direction of the digital product with a screen. During operation, the front nozzle 1 sprays a cleaning solution mist to fully dissolve the oil and dirt on the screen surface. After an interval of 0.5-1 seconds, the rear nozzle 1 sprays a pure water mist, utilizing the flow characteristics of the pure water mist to carry the dissolved oil and dirt away from the screen surface. The entire process eliminates the need for multiple wiping steps, significantly reducing the workflow and operation time, and significantly improving cleaning efficiency. Regarding liquid storage and delivery, the device's water tank 2 is divided into a cleaning solution chamber 21 and a pure water chamber 22 by a partition 3. It is equipped with two independent pump-type liquid delivery components 4 to achieve separate storage and delivery of the cleaning solution and pure water, effectively avoiding mixing and contamination of the two liquids and ensuring the cleaning effect. Meanwhile, the infusion assembly 4 on the cleaning fluid side is also equipped with a filter screen structure 5, which can filter impurities and particles in the cleaning fluid, prevent clogging of the infusion pipe and nozzle 1, and also prevent impurities from being sprayed onto the screen with the cleaning fluid, causing secondary pollution.

[0042] Furthermore, the device is also equipped with convenient maintenance and adaptation functions. After shutdown, it can be switched to pure water delivery through the diversion structure 6. Pure water is used to rinse the infusion component 4 and nozzle 1 on the cleaning liquid side to remove residual cleaning liquid and impurities, prevent them from drying and clumping and clogging the components, extend the service life of the device, and reduce manual maintenance costs.

[0043] In the description of this specification, the references to terms such as "embodiment," "one implementation," "some implementations," "illustrative implementation," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described implementation or example is included in at least one implementation or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0044] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this application without creative effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dual-zone spraying device, characterized in that, include: Nozzle (1), the number of nozzles (1) is two and they are arranged sequentially along the direction of conveying digital products with screens; Water tank (2), the interior of the water tank (2) is provided with a partition (3), the partition (3) divides the interior of the water tank (2) into a cleaning liquid chamber (21) and a pure water chamber (22), the cleaning liquid chamber (21) is used to store cleaning liquid, and the pure water chamber (22) is used to store pure water; The infusion assembly (4) consists of two parts, which are respectively disposed on the two nozzles (1). The infusion assembly (4) is also connected to the cleaning fluid chamber (21) and the pure water chamber (22) on the water tank (2). The infusion assembly (4) is used to deliver the cleaning fluid or pure water inside the water tank (2) to the nozzle (1) so that the nozzle (1) sprays the cleaning fluid or pure water onto the digital product with screen.

2. The dual-zone spraying device according to claim 1, characterized in that, The infusion assembly (4) connected to the cleaning fluid chamber (21) of the water tank (2) is also provided with a filter structure (5), which is used to filter the cleaning fluid.

3. A dual-zone spraying device according to claim 2, characterized in that, The infusion assembly (4) includes a water pump (41), an inlet pipe (42), and an outlet pipe (43); the inlet pipe (42) is installed between the inlet of the water pump (41) and the cleaning liquid chamber (21) or the pure water chamber (22) on the water tank (2), and the outlet pipe (43) is installed between the outlet of the water pump (41) and one of the nozzles (1).

4. A dual-zone spraying device according to claim 3, characterized in that, The filter structure (5) includes a filter housing (51), a frame (52), and a filter screen (53); the filter housing (51) is connected to the water inlet pipe (42), the frame (52) is disposed inside the filter housing (51), the filter screen (53) is installed on the frame (52), and the filter screen (53) is used to filter the flowing cleaning liquid.

5. A dual-zone spraying device according to claim 3, characterized in that, The infusion assembly (4) connected to the cleaning fluid chamber (21) of the water tank (2) is also provided with a diversion structure (6). One end of the diversion structure (6) is connected to the infusion assembly (4), and the other end is connected to the cleaning fluid chamber (21) and the pure water chamber (22) of the water tank (2) respectively. The diversion structure (6) is used to control the infusion assembly (4) connected to the cleaning fluid chamber (21) of the water tank (2) to be connected to the cleaning fluid chamber (21) or the pure water chamber (22).

6. A dual-zone spraying device according to claim 5, characterized in that, The diversion structure (6) includes a three-way electric valve (61), a cleaning fluid pipeline (62), and a pure water pipeline (63). One interface of the three-way electric valve (61) is connected to the inlet pipe (42) in the infusion assembly (4). One end of the cleaning fluid pipeline (62) is connected to the other interface of the three-way electric valve (61), and the other end of the cleaning fluid pipeline (62) is connected to the cleaning fluid chamber (21) of the water tank (2). One end of the pure water pipeline (63) is connected to the third interface of the three-way electric valve (61), and the other end of the pure water pipeline (63) is connected to the pure water chamber (22) of the water tank (2). The three-way electric valve (61) is used to control the opening and closing of the inlet pipe (42), the cleaning fluid pipeline (62), and the pure water pipeline (63) to achieve selective connection between the infusion assembly (4) and the cleaning fluid chamber (21) or the pure water chamber (22).

7. A dual-zone spraying device according to claim 1, characterized in that, The nozzle (1) is an atomizing nozzle.

8. A dual-zone spraying device according to claim 1, characterized in that, The nozzle (1) is provided with a linear adjuster (7), which is used to adjust the height of the nozzle (1) along a direction perpendicular to the conveying direction of the digital product with screen.

9. A dual-zone spraying device according to claim 1, characterized in that, The water tank (2) is also provided with two replenishment ports (8) corresponding to the cleaning liquid chamber (21) and the pure water chamber (22).

10. A dual-zone spraying device according to claim 1, characterized in that, The cleaning liquid chamber (21) and the pure water chamber (22) inside the water tank (2) are both equipped with liquid level sensors (9).

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