Ceramic tile surface metal point decoration mixed spraying device

Abstract

The application provides a ceramic tile surface metal point decoration mixed spraying device, which is applied to the technical field of ceramic tile surface decoration and comprises a mixing cavity; a particle input port for inputting metal particles or ceramic micro-powder into the mixing cavity in a longitudinal falling mode is further arranged, and the outlet end of the particle input port extends to the middle upper part of the mixing cavity; a gas pressure input port for connecting an adjustable gas pressure source to the mixing cavity is further arranged; a liquid input port and a thickening agent input port for respectively inputting water and a thickening agent into the mixing cavity in a horizontal spraying mode are further arranged, and the outlet end of the liquid input port and the thickening agent input port is lower than the outlet end of the particle input port; a spraying port for spraying the mixed material to the tile surface to form metal point decoration is further arranged; through accurate control of the metal particles, the ceramic micro-powder, the water, the thickening agent and the gas pressure, effective mixing and directional spraying of the metal point decoration material are realized, and the accuracy of the metal point landing point is significantly improved.

Description

Technical Field

[0001] This application relates to the field of ceramic tile surface decoration technology, and more specifically, to a mixed spraying device for ceramic tile surface metal dot decoration. Background Technology

[0002] In the field of tile decoration, creating metallic dots (such as silver dots) on the tile surface can enhance its artistic expression and is a common decorative technique. Existing technologies for applying silver dots to tiles suffer from two major problems: First, insufficient control over the placement of the dots: lacking a precise guiding structure for the silver material (such as silver microparticles or powder), it is impossible to control the placement of the silver material on the tile surface according to preset rules (such as regular arrangement) or design requirements (such as random distribution), resulting in messy decorative textures and difficulty in achieving standardized or artistic decorative effects. Second, limitations in shape adjustment: lacking flexible means to control the shape (size, embedding depth) of the silver dots, it is impossible to adjust the uniformity or variability of the silver dots according to decorative needs, limiting the artistic expression of the tile surface decoration (such as the inability to achieve artistic effects of gradual size changes and varying depths). Existing technologies (such as CN116375506A and CN119191712A) rely on high-temperature firing processes and glaze pretreatment to form recessed areas, making it difficult to accurately guide metal materials and achieve regularly arranged or randomly distributed decorative textures. They suffer from low accuracy in placement and uncontrollable shapes. At the same time, the size and embedding depth of the silver dots depend on the glaze thickness and firing process, lacking flexibility and limiting artistic expression.

[0003] Therefore, there is an urgent need for a device that can precisely control the drop point of silver material and flexibly adjust the shape of the silver droplet to overcome the shortcomings of existing technologies. Utility Model Content

[0004] To overcome the above shortcomings, this application proposes a ceramic tile surface metal dot decoration hybrid spraying device to replace the traditional glaze pretreatment process, which directly forms metal dots through physical spraying, thus shortening the production process.

[0005] This application provides a ceramic tile surface metal dot decoration mixing spraying device, including a mixing chamber; It is also provided with a particle inlet for feeding metal particles or ceramic powder into the mixing chamber in a vertically falling manner, and its outlet end extends to the middle and upper part of the mixing chamber; It is also equipped with a pressure input port for connecting an adjustable pressure source to the mixing chamber; It is also provided with a liquid inlet and a thickener inlet for separately injecting water and thickener into the mixing chamber in a horizontal spray manner, and the outlet end is lower than the outlet end of the particulate inlet; It also has spray nozzles for spraying the mixture onto the brick surface to create metallic dot decorations.

[0006] This application achieves effective mixing and directional spraying of metal dot decorative materials through precise control of metal particles, ceramic powder, water, thickener, and air pressure, thereby significantly improving the accuracy of metal dot landing and effectively overcoming the problems of insufficient landing point control and limited shape adjustment in the prior art.

[0007] Furthermore, this application also proposes that there are multiple spray nozzles, which are inclined, and the coarseness of the material discharged from the spray nozzles can be changed by adjusting the air pressure connected to the air pressure input port.

[0008] This application utilizes multiple tilted spray nozzles combined with adjustable air pressure to create metallic dots of varying sizes and distribution patterns from the sprayed mixture. This allows for flexible control over the size, density, and three-dimensionality of the metallic dots, greatly enriching the decorative effect and artistic expression of ceramic tile surfaces.

[0009] Furthermore, this application also proposes that the top of the particle input port be forked into a first input port for inputting metal particles, a second input port for inputting metal powder, and a third input port for inputting ceramic micro powder.

[0010] By subdividing the particle input port into multiple independent input channels, different types of particles (such as metal particles, metal powder, and ceramic micro powder) can be input separately. This allows for precise adjustment of the material composition and visual effect of the metal dots according to decorative needs, improving the customization and diversity of the decoration. The first input port is connected to the metal particle input source, the second input port is connected to the metal powder input source, and the third input port is connected to the ceramic micro powder input source. Specifically, this can be a conveying and storage tank.

[0011] Furthermore, this application also proposes that the end of the particle inlet is connected to a distributor in the shape of an inverted funnel, and the bottom of the distributor is uniformly provided with multiple radial spray holes.

[0012] By combining an inverted funnel-shaped distributor with a radial nozzle design, the particles entering the mixing chamber are ensured to be uniformly dispersed and premixed, avoiding material accumulation or uneven distribution. This provides a stable foundation for subsequent fine mixing and spraying, thereby ensuring the uniformity and consistency of the metal dot decoration.

[0013] Furthermore, this application also proposes that the second inlet is connected to a pressurized metal powder input source, so that metal powder, metal particles and ceramic micro powder are uniformly sprayed out from the distributor, so as to form a mixture with the water and thickener input from the liquid inlet and the thickener inlet.

[0014] By introducing a pressurized metal powder input source, the metal powder, metal particles, and ceramic micro-powder can be fully pre-dispersed and uniformly sprayed before entering the mixing chamber. This not only optimizes the mixing effect of dry materials, but also creates favorable conditions for rapid and uniform mixing with liquid components, ensuring the quality and spraying effect of the final mixture.

[0015] Furthermore, this application also proposes that the opening of the air pressure inlet is lower than that of the particle inlet, and two air pressure inlets are symmetrically arranged next to the particle inlet. The two air pressure inlets, the liquid inlet and the thickener inlet are respectively connected to the straight pipe at the top of the mixing chamber on the same plane, and the outlet of the straight pipe extends to the bottom of the mixing chamber.

[0016] The specific layout of the gas inlet, liquid inlet, and thickener inlet, along with the design of the straight-through pipe, allows the gas and liquid components to undergo preliminary pre-mixing before entering the mixing chamber. This enables them to enter the mixing chamber in a deeper and more concentrated manner, thereby enhancing the turbulence inside the mixing chamber and ensuring sufficient contact between the materials, thus improving the overall mixing efficiency.

[0017] Furthermore, this application also proposes that at least one pair of lateral outlets be provided on the side wall of the straight pipe, so that the gas, liquid and thickener components are premixed in the straight pipe and then enter the mixing chamber through the lateral outlets, or enter the mixing chamber from the bottom end of the straight pipe.

[0018] The horizontal outlet design on the side wall of the straight pipe allows the premixed gas and liquid components to enter the mixing chamber laterally, further promoting the uniform mixing and dispersion of the materials, effectively preventing material sedimentation or agglomeration, and ensuring the uniformity of the sprayed materials.

[0019] Furthermore, this application also proposes that a valve assembly be installed at each of the transverse outlets for controlling the opening and closing of the transverse outlets.

[0020] By installing a valve assembly at the transverse outlet, the entry method and flow rate of gas and liquid components can be precisely controlled according to actual needs, thereby enabling more precise adjustment of the mixing process and further optimizing the mixing effect and final injection quality.

[0021] Furthermore, this application also proposes that the outlet ends of the particulate inlet, the air pressure inlet, the liquid inlet, and the thickener inlet are all equipped with one-way check valves to prevent backflow and blockage.

[0022] By installing one-way check valves at the outlets of all critical inlets, backflow of materials and blockage of pipelines are effectively prevented, ensuring the stability and reliability of the equipment operation.

[0023] Furthermore, this application also proposes that the inner wall of the mixing chamber is made of polished ceramic material to reduce material adhesion.

[0024] By using polished ceramic material, the adhesion of materials to the cavity wall is significantly reduced, reducing material waste and cleaning difficulty. At the same time, it ensures the smooth flow of the mixed materials, avoids uneven mixing or spray interruption caused by adhesion, and improves the long-term stability of the device and the consistency of the decorative effect.

[0025] Beneficial Effects: The ceramic tile surface metal dot decoration mixing spraying device provided in this application achieves precise control of the cold-state silver material landing point, supporting regular arrangement or random dispersion of decorative textures; it dynamically adjusts the size / depth of the silver dots through air pressure, replacing the high-temperature firing process; it features a refined design for the material input method, mixing process, and spray outlet; and by adjusting the air pressure source and the ratio of each component, it can flexibly control the coarseness of the sprayed material and the viscosity of the mixture, thereby affecting the size, embedding depth, and overall shape of the metal dots. This effectively solves the drawback of limited metal dot shape adjustment in existing technologies, significantly improving the artistic expression and quality of ceramic tile surface metal dot decoration, achieving standardized or artistic decorative effects, and possessing greater flexibility and controllability. Attached Figure Description

[0026] Figure 1 A schematic diagram of the front structure of a ceramic tile surface metal dot decoration mixed spraying device provided in this application.

[0027] Figure 2 This is a front cross-sectional structural diagram of a ceramic tile surface metal dot decoration mixed spraying device provided in this application.

[0028] Figure 3 This is a schematic diagram of another angle of the structure of a ceramic tile surface metal dot decoration mixed spraying device provided in this application.

[0029] Figure 4 This is a schematic diagram of the bottom cross-sectional structure of a ceramic tile surface metal dot decoration mixed spraying device provided in this application.

[0030] Figure 5 This is a side cross-sectional structural diagram of a ceramic tile surface metal dot decoration mixed spraying device provided in this application.

[0031] In the diagram: 1. Mixing chamber; 2. Particle inlet; 21. First inlet; 22. Second inlet; 23. Third inlet; 24. Distributor; 3. Air pressure inlet; 4. Liquid inlet; 5. Thickener inlet; 6. Spray nozzle; 7. Straight pipe; 8. Lateral outlet. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the field of ceramic tile decoration, enhancing the artistic expression of the tile surface by forming metallic dots is a common decorative technique. Traditional ceramic tile metal decoration relies on high-temperature firing and glaze pretreatment to create recessed areas, making it difficult to precisely guide the metal material. This results in the placement of the dots being uncontrollable according to preset rules or design requirements, leading to messy decorative textures. At the same time, the shape of the silver dots depends on the glaze thickness and firing process, lacking flexible control over their size and embedding depth, thus limiting artistic expression and failing to achieve gradient or staggered effects.

[0035] For this, see Figures 1 to 5 This application proposes a ceramic tile surface metal dot decoration mixing spraying device for applying metal dot decoration to the ceramic tile surface, including a mixing chamber 1; It is also provided with a particle inlet 2 for feeding metal particles or ceramic powder into the mixing chamber 1 in a vertically falling manner, and its outlet end extends to the middle and upper part of the mixing chamber 1; It is also equipped with an air pressure input port 3 for connecting an adjustable air pressure source to the mixing chamber 1; It is also provided with a liquid inlet 4 and a thickener inlet 5 for injecting water and thickener into the mixing chamber 1 in a horizontal spray manner, respectively, and the outlet end is lower than the outlet end of the particulate inlet 2; It is also equipped with a spray nozzle 6 for spraying the mixture onto the brick surface to form metallic dot decoration.

[0036] This application achieves effective mixing and precise spraying of metal particles, ceramic powder, water, and thickener by setting up a mixing chamber 1 and introducing a particle inlet 2, a pressure inlet 3, a liquid inlet 4, a thickener inlet 5, and a spray nozzle 6. This effectively solves the problems of insufficient control over the landing point and limited shape adjustment of metal dots in existing technologies, significantly improving the quality and diversity of metal dot decoration on ceramic tile surfaces. Specifically, the mixing chamber 1 is a closed or semi-closed container, serving as the main space for mixing various materials. The particle inlet 2 is configured to introduce solid particulate materials such as metal particles or ceramic powder into the mixing chamber 1 in a vertically falling manner. Its outlet end typically extends to the upper middle part of the mixing chamber 1 to ensure that the particulate material can fall sufficiently and mix with the subsequently introduced liquid. The pressure inlet 3 is used to introduce an adjustable pressure source, which can be compressed air, nitrogen, or other inert gases. Its function is to provide power for the mixing of materials and assist in the spraying of the mixture. Liquid inlet 4 and thickener inlet 5 are used to introduce water and thickener into mixing chamber 1 in a transverse spray manner, respectively. Their outlets are positioned below the outlet of particulate inlet 2 to ensure sufficient contact and mixing of the liquid with the falling particulate material. The thickener adjusts the viscosity of the mixture, thus affecting the shape of the final sprayed metallic dots. Through spray nozzle 6, the mixture is evenly sprayed onto the ceramic tile surface, thereby forming the desired metallic dot decoration.

[0037] Specifically, the mixing chamber 1 can be designed in various shapes and sizes. For example, the mixing chamber 1 can be a cylindrical container, and its material can be selected according to the properties of the material being processed; for example, it can be made of stainless steel, polymer materials, or ceramic materials. The particle inlet 2 is used to input metal particles or ceramic powder into the mixing chamber 1. The particle inlet 2 can be a simple vertical pipe, allowing the particles to fall by gravity. For example, a hopper can be installed with its bottom connected to the particle inlet 2, allowing the particles to fall directly into the pipe. Alternatively, it can be configured as a pipe with a vibration device to ensure that the particles can enter the mixing chamber 1 smoothly and evenly, avoiding blockages. The outlet end of the particle inlet 2 is designed to extend to the upper middle part of the mixing chamber 1 to ensure that the particles have sufficient falling distance to mix with the subsequently introduced liquid. The air pressure inlet 3 is used to connect an adjustable air pressure source to the mixing chamber 1. The air pressure inlet 3 can be a simple pipe directly connected to an external air pump or air source. For example, the air pressure can be adjusted by a manual or automatic valve, or the pipeline can be configured with a pressure sensor and feedback control system to monitor the pressure on the brick surface in real time and dynamically adjust the nozzle air pressure.

[0038] Liquid inlet 4 and thickener inlet 5 are used to introduce water and thickener into mixing chamber 1 via lateral spraying, respectively. Liquid inlet 4 and thickener inlet 5 can be driven by independent pumps, injecting the liquid laterally into mixing chamber 1 through nozzles. For example, conventional atomizing nozzles or fan nozzles can be used. These inlets can also be configured as pipes with flow meters and regulating valves to precisely control the input volume and spraying speed of water and thickener. The outlet ends of liquid inlet 4 and thickener inlet 5 are positioned below the outlet end of particulate inlet 2, which helps ensure that falling particles can fully contact the laterally sprayed liquid, thereby forming a uniform mixture. Spray nozzle 6 is used to spray the mixture onto the brick surface to form metallic dot decoration. Spray nozzle 6 can be a single circular nozzle, with the spray range and intensity controlled by adjusting the air pressure. For example, nozzles of different diameters can be selected according to the desired size and distribution density of metallic dots, or it can be configured as a nozzle with a variable orifice, adjusting its opening size mechanically or hydraulically to change the coarseness of the sprayed material. The spray nozzle 6 allows the mixture to be precisely guided onto the ceramic tile surface to form the desired metallic dot decoration.

[0039] Thus, after the mixture is fully prepared in the mixing chamber 1, it is sprayed onto the ceramic tile surface through the spray nozzle 6 to form the desired metallic dot decoration. The entire process achieves precise control over material input, mixing, and spraying, allowing for effective regulation of the landing position and morphological characteristics of the metallic dots, thereby overcoming the shortcomings of low landing accuracy and uncontrollable morphology in existing technologies. This application uses adjustable air pressure to change the coarseness of the material output from the nozzle (coarse output at low air pressure, fine output at high air pressure). Using this equipment to apply silver metallic dots, the tile surface will form a unique texture of silver embellishment. The silver dots may be arranged neatly or randomly like stars, creating a glossy contrast with the tile base and enhancing visual depth. By adjusting the air pressure, the embedding depth and size of the silver dots can be varied, creating different styles such as retro distressing (deep and shallow mottled) and modern minimalist (uniform and exquisite), adding exquisite details of metallic luster to the tile surface decoration, suitable for artistic brick carvings, decorative tiles, and other scenarios, enhancing the artistic value and uniqueness of the tile surface. If the pressure is stable, the silver dots are uniform in size and embedded in the brick surface to form delicate recessed metal ornaments; if the pressure changes, artistic effects of varying sizes and depths can be created. This application introduces an adjustable air pressure source to the air pressure input port 3, which not only provides power for mixing but, more importantly, allows the air pressure to directly affect the discharge state of the spray nozzle 6, thereby achieving flexible adjustment of the metal dot coarseness. This direct control of the spray parameters allows for precise adjustment of the size, distribution density, and other morphological characteristics of the metal dots according to design requirements, effectively solving the problem of uncontrollable metal dot morphology in existing technologies.

[0040] This application further proposes that the spray nozzles 6 are multiple and angled, allowing the fineness of the material exiting the spray nozzles 6 to be altered by adjusting the air pressure supplied to the air pressure input port 3. Specifically, the spray nozzles 6 are multiple rather than a single outlet, enabling the mixture to be sprayed onto the ceramic tile surface over a wider area or in a more uniform manner. Simultaneously, the spray nozzles 6 are designed to be angled, meaning their spray direction is at an angle to the central axis or vertical direction of the mixing chamber 1. This angled arrangement helps the material achieve a better atomization effect or a more diffuse spray pattern, resulting in a more three-dimensional or wider-coverage metallic dot decoration on the tile surface. The air pressure input port 3 is used to connect to an adjustable air pressure source. By adjusting the air pressure provided by this source, the fineness of the material sprayed from the spray nozzles 6 can be precisely controlled. For example, higher air pressure typically results in more thorough atomization of the material, forming finer metallic dots; while lower air pressure may cause the material to be sprayed out as larger particles or droplets, forming coarser metallic dots.

[0041] This application effectively solves the limitation of a single spray nozzle in terms of decorative effect diversity by setting multiple inclined spray nozzles 6 and combining them with an adjustable air pressure input port 3. When the adjustable air pressure source inputs gas into the mixing chamber 1 through the air pressure input port 3, the gas forms a mixture with the material in the mixing chamber 1. When sprayed out through the multiple inclined spray nozzles 6, the kinetic energy of the gas further disperses and atomizes the material. By adjusting the gas pressure connected to the air pressure input port 3, the speed and intensity of the mixture sprayed out can be directly affected, thereby changing the shear force and atomization degree of the material at the spray nozzles 6. Higher air pressure can provide greater shear force, causing the material to be broken down into finer particles or droplets, thus forming fine metal dots; conversely, lower air pressure causes the material to be sprayed out as relatively larger particles, forming coarser metal dots. Multiple inclined spray nozzles 6 ensure that a more uniform or artistic coverage effect can be achieved while adjusting the coarseness. In practical applications, a PLC controller can also be connected to control the movement path of the device to achieve specific metal dot decorations. By pre-programming the motion program through the PLC controller, the device can be controlled to move along the brick surface (such as in a straight line, curve, or dot matrix trajectory), and the air pressure, liquid, thickener flow rate, and the opening degree of the lateral output port 8 can be adjusted simultaneously to achieve the metal dot decoration of the preset pattern (such as regular grid, random scattering, or artistic patterns). By controlling the coordination of the device's motion path and material parameters, the limitations of manual operation are overcome, and the accurate replication of complex decorative patterns can be achieved. In some embodiments, the spray nozzle 6 is inclined at 30-60 degrees to the bottom of the mixing chamber 1 (the inclination direction is evenly distributed along the circumference). By adjusting the air pressure connected to the air pressure input port 3, when the air pressure is stable at 0.2-0.5 kg, the spray nozzle 6 outputs coarser material (3-5 mm in diameter), forming larger metal dots, thus creating visible, three-dimensional, rough metal dots on the brick surface; when the air pressure is stable at 0.6-1 kg, the spray nozzle 6 outputs finer material (0.5-2 mm in diameter), forming smaller metal dots that are evenly attached to the brick surface, presenting a delicate luster.

[0042] Precise control over the thickness of the metallic dots can be achieved simply by adjusting the air pressure, thus meeting the needs of different design styles and decorative effects. Multiple tilted spray nozzles not only expand the spray range but also optimize the atomization effect and uniform distribution of the material, making the resulting metallic dot decoration more artistic and visually impactful. This provides a wider range of choices for personalized customization and high-end decoration of ceramic tiles, increasing the added value and market competitiveness of the product. In this way, different decorative effects can be quickly switched simply by adjusting the air pressure, without changing nozzles or adjusting other mechanical parts, greatly improving production efficiency and design freedom.

[0043] This application further proposes that the top of the particle inlet 2 is branched into a first inlet 21 for inputting metal particles, a second inlet 22 for inputting metal powder, and a third inlet 23 for inputting ceramic microparticles. Specifically, the first inlet 21 is used to transport metal particles, which typically have a large particle size to form decorative metal dots with a distinct granular texture. The second inlet 22 is used to input metal powder, which typically has a smaller particle size than the metal particles, enabling a finer and more uniform metallic dot effect. The third inlet 23 is used to input ceramic microparticles, which can be used to adjust the viscosity, color, or sintering properties of the mixture, or in some cases, as non-metallic decorative dots. By branching the particle inlet 2 and setting independent input channels for different types of particles, precise control over the types and proportions of different particles can be achieved. For example, depending on the desired decorative effect, a certain inlet can be selectively opened or closed, or the input amount of different inlets can be adjusted, thereby flexibly adjusting the composition ratio of various particles in the mixture.

[0044] This application branches the top of the particle inlet 2 into a first inlet 21, a second inlet 22, and a third inlet 23, allowing different types of particles—metal particles, metal powder, and ceramic micropowder—to be introduced through their respective independent channels. This design avoids the problems of uneven material mixing or difficulty in precisely controlling the proportions of different components that may occur with a single inlet. When a specific type of metallic dot decoration is required, the operator can precisely control the material supply to each branched inlet according to the preset formula or effect requirements, for example, by adjusting the corresponding valves or feeding devices. Thus, particles of different sizes or materials can be independently metered and conveyed, ensuring they enter the mixing chamber 1 in the desired proportions, thereby providing a precise material basis for subsequent mixing and spraying processes.

[0045] This application further proposes that the end of the particle input port 2 is connected to a distributor 24 in the shape of an inverted funnel, and the bottom of the distributor 24 is uniformly provided with multiple radial spray holes.

[0046] The inverted funnel design guides and gathers particles falling from above, providing a transition space for subsequent dispersion. This shape helps prevent particles from directly accumulating or clogging before entering the mixing chamber. Connections can be made via threaded connections, welding, flange connections, or integral molding. The inverted funnel shape can be a smooth conical inner wall or a conical structure with stepped or spiral guide channels to further guide the particles. The radial nozzles spray particles radially outward into the mixing chamber 1. This radial spraying method ensures that the particles achieve an initial uniform dispersion upon entering the mixing chamber 1, rather than falling in a concentrated point. This is particularly important for mixing different types of particles (such as metal particles, metal powder, and ceramic powder), as they may have different densities, particle sizes, and shapes; simple gravity-driven falling can easily lead to segregation or agglomeration. Through the guidance of the distributor 24 and the dispersion effect of the radial nozzles, the particles achieve a more uniform distribution upon entering the mixing chamber 1, thus ensuring the consistency of particle concentration in the mixture. This uniformity directly improves the accuracy and uniformity of the landing points of the metal dots that are finally sprayed onto the brick surface, which helps to achieve standardized and artistic effects in decorative textures.

[0047] In some preferred embodiments, the distributor 24 can be made of wear-resistant ceramic or stainless steel to ensure its stability and corrosion resistance during long-term use. For example, the inverted funnel-shaped structure of the distributor 24 can be designed as a cone with a cone angle of 60 to 90 degrees to optimize the guiding effect of particles. The number of nozzles can be adjusted according to the particle type, flow rate, and mixing chamber size, and can be set to 4 to 8, evenly distributed circumferentially along the bottom of the distributor 24, with each nozzle having a diameter of 0.5 mm to 2 mm. The outlet direction of these nozzles is radial outward from the center. Specifically, circular, elliptical, or slit-shaped holes can be used.

[0048] Therefore, the particle inlet 2 serves as the main input channel, allowing various particles to be input in a vertically descending manner. Without the distributor 24, these particles with different characteristics (density, particle size, shape) may be unevenly distributed due to gravity, or even segregation or agglomeration may occur. By setting an inverted funnel-shaped distributor 24 at the end of the particle inlet 2, the particles entering from multiple inlets can be initially guided and converged. Furthermore, multiple radial nozzles evenly spaced at the bottom of the distributor 24 can evenly disperse the converged particles in all directions, rather than simply allowing them to fall vertically. This structured guidance and dispersion mechanism ensures a more uniform initial distribution of particles when entering the mixing chamber, even with multiple particle inputs, thereby effectively reducing the risk of particle segregation or agglomeration. This uniform dispersion characteristic provides a foundation for the consistency of particle concentration in the subsequent mixture, thereby improving the accuracy and uniformity of the final metal points sprayed onto the brick surface. Specifically, this solution effectively solves the problem of uneven distribution and lack of precise guidance of particles when entering the mixing chamber under multiple particle input conditions by setting an inverted funnel-shaped distributor 24 with radial spray holes at the end of the particle input port 2. This ensures the uniformity of particles in the mixture and the stability of the spray, providing key technical support for achieving precise metal dot decoration.

[0049] This application further proposes that the second inlet 22 is connected to a pressurized metal powder input source, so that metal powder, metal particles and ceramic powder are uniformly sprayed from the distributor 24, so as to form a mixture with the water and thickener input from the liquid inlet 4 and the thickener inlet 5.

[0050] Specifically, the second inlet 22 is designed to be connected to a pressurized metal powder input source. This metal powder input source provides stable air pressure, actively conveying the metal powder to the mixing chamber 1. Thus, the metal powder no longer relies solely on gravity, but is assisted by air pressure to ensure it enters the distributor 24 in a more uniform and controllable manner. The metal powder input source can be a storage tank with a pneumatic conveying device or a powder conveying system equipped with a pneumatic pump. The pressure of this air source can be adjusted according to the particle size, density, and required conveying speed of the metal powder to ensure optimal conveying effect. By connecting the second inlet 22 to a pressurized metal powder input source, this application allows the metal powder to achieve preliminary homogenization and dispersion before entering the distributor 24. When the metal powder, metal particles, and ceramic micropowder enter the inverted funnel-shaped distributor 24 together, the metal powder is forcibly conveyed under air pressure, effectively overcoming the tendency of metal powder agglomeration and the problem of uneven gravity fall. Thus, all particulate components are thoroughly mixed and uniformly sprayed out within the distributor 24, forming a highly dispersed solid particle stream. This uniform particle stream then comes into full contact with water and thickener that are laterally sprayed in from the liquid inlet 4 and the thickener inlet 5, thereby ensuring the uniformity and stability of the mixture.

[0051] The above technical solution effectively solves the problems of uneven metal powder distribution and agglomeration that may occur with traditional gravity-feed methods, significantly improving the uniformity of the mixture. As a result, the metal dots sprayed onto the ceramic tile surface can exhibit a more consistent color, gloss, and distribution, greatly enhancing the product's aesthetics and quality stability, and reducing the scrap rate caused by uneven material distribution.

[0052] In some preferred embodiments, the pressurized metal powder input source can be a storage tank equipped with pneumatic stirring and conveying functions. The storage tank has an internal stirring device that pre-stirs the metal powder with compressed air to prevent agglomeration or sedimentation. Subsequently, compressed air, controlled by a regulating valve, is introduced to the bottom of the storage tank, conveying the metal powder through the second input port 22 to the particle input port 2. At the end of the particle input port 2, the metal powder, metal particles, and ceramic micropowder enter the distributor 24 together. By precisely controlling the air pressure at the second input port 22, it can be ensured that the metal powder, metal particles, and ceramic micropowder form a highly uniform and dispersed particle cloud upon exiting the distributor 24. This cloud is then thoroughly mixed in the mixing chamber 1 with water and thickener sprayed from the liquid input port 4 and thickener input port 5, ultimately forming a uniform mixture for spraying.

[0053] This application further proposes that the opening of the air pressure inlet 3 is lower than that of the particulate inlet 2. Two air pressure inlets 3 are symmetrically arranged beside the particulate inlet 2. These two air pressure inlets 3, along with the liquid inlet 4 and the thickener inlet 5, respectively converge at the top plane of the mixing chamber 1 to a straight pipe 7. The outlet of the straight pipe 7 extends towards the bottom of the mixing chamber 1. Specifically, the opening of the air pressure inlets 3 is set lower than the outlet end of the particulate inlet 2. This relative position helps the airflow to more effectively disturb the falling particles and provides a favorable aerodynamic environment for the subsequent introduction of liquid and thickener. In particular, the two air pressure inlets 3, the liquid inlet 4, and the thickener inlet 5 converge at the top plane of the mixing chamber 1 to the straight pipe 7. The straight pipe 7 can be understood as a premixing channel, where preliminary mixing occurs before entering the mixing chamber 1. The outlet of the straight pipe 7 is designed to extend to the bottom of the mixing chamber 1, with the aim of conveying the premixed fluid to a deeper part of the mixing chamber 1, so as to make full contact and mix with the metal particles or ceramic powder falling from the particle inlet 2.

[0054] This application utilizes the kinetic energy of airflow to initially atomize and disperse water and thickener through this premixing mechanism, thereby improving the uniformity of the liquid and thickener. Simultaneously, the symmetrical arrangement of the air pressure inlet 3 and its lower opening than the particle inlet 2 ensures that the airflow can more effectively contact the falling particles and the premixed liquid and thickener, promoting uniform dispersion and mixing of the materials. Therefore, the straight pipe 7 and its outlet extending to the bottom of the mixing chamber 1 allow the premixed material to be precisely delivered to specific areas within the mixing chamber 1, further optimizing the overall mixing efficiency and material uniformity.

[0055] Through the above technical solution, this application can significantly improve the mixing uniformity of metal particles, ceramic powder, water, thickener, and air pressure in the mixing chamber 1, effectively avoiding the problems of uneven spraying or clogging caused by insufficient material mixing. This premixing mechanism ensures that each component reaches a certain degree of uniformity before entering the mixing chamber 1, thereby improving the quality and stability of the final mixture. In addition, it also helps to achieve finer material atomization, making the sprayed metal dots more uniform and delicate, thus improving the decorative effect and product quality of ceramic tiles.

[0056] In one specific implementation, the straight pipe 7 can be made of corrosion-resistant engineering plastics or stainless steel, and its inner wall can be polished to reduce material adhesion. In practical applications, the two air pressure inlets 3 can be located on the left and right sides of the particulate inlet 2, respectively, and lower than the particulate inlet 2. The liquid inlet 4 and the thickener inlet 5 can be supplied by independent pumping systems, and their flow rates can be precisely controlled to ensure that they reach a preset ratio when merging with the air pressure inlet 3. The diameter and length of the straight pipe 7 can be adjusted according to the required premixing effect and material flow rate. For example, it can be designed as a pipe with an inner diameter of 10 mm to 20 mm and a length of 100 mm to 300 mm to provide sufficient premixing space. During operation, by adjusting the air pressure connected to the air pressure inlet 3, the speed and turbulence of the airflow in the straight pipe 7 can be changed, thereby further affecting the atomization effect and premixing uniformity of water and thickener.

[0057] This application further proposes that at least one pair of lateral outlets 8 be provided on the side wall of the straight pipe 7, so that the gas, liquid and thickener components are premixed in the straight pipe 7 and then enter the mixing chamber 1 through the lateral outlets 8, or enter the mixing chamber 1 from the bottom end of the straight pipe 7.

[0058] Specifically, the transverse output port 8 refers to the opening provided on the side wall of the straight pipe 7, and the number of such openings can be one or more pairs, for example, two, four or more openings arranged symmetrically. In addition, the scheme also retains the option of "entering the mixing chamber 1 from the bottom end of the straight pipe 7", which means that, depending on the actual mixing requirements, the premixed material can be selectively introduced into the mixing chamber 1 through the transverse output port 8 or the bottom end of the straight pipe 7, or a combination of both.

[0059] This application effectively solves the problem of insufficient initial mixing efficiency and uniformity of materials in the basic scheme by opening a transverse outlet 8 on the side wall of the straight pipe 7 and guiding the gas, liquid, and thickener group transversely into the mixing chamber 1. Specifically, after these components are initially mixed in the straight pipe 7, when they are sprayed into the mixing chamber 1 through the transverse outlet 8, a strong rotating flow field is generated. This rotating flow field can significantly increase the turbulence intensity and contact area of ​​the materials in the mixing chamber 1, causing the metal particles or ceramic powder falling longitudinally from the particle inlet 2 to collide and mix more violently and uniformly with the premixed liquid, thickener, and gas components. At the same time, the premixing process of the premixed materials in the straight pipe 7 also lays the foundation for the subsequent deep mixing in the mixing chamber 1, ensuring that the materials entering the mixing chamber 1 already have a certain degree of uniformity. In addition, the option of entering the mixing chamber 1 from the bottom of the straight pipe 7 is retained, allowing the system to flexibly adjust the material introduction method according to different material characteristics or mixing requirements to adapt to diverse production needs.

[0060] Through the above technical solution, this application can significantly improve the mixing efficiency and uniformity of materials in the mixing chamber 1, effectively avoiding local accumulation or uneven mixing of materials, and ensuring that metal particles, ceramic powder, water, and thickener can be fully and uniformly combined, thereby forming a more stable mixture. This improved mixing effect directly helps to improve the quality and consistency of the final ceramic tile surface metal dot decoration, reduce the scrap rate, and optimize the stability of the production process.

[0061] This application further proposes that a valve assembly be installed at each transverse outlet 8 to control the opening and closing of the transverse outlet 8. Specifically, the valve assembly can be understood as a fluid control device, the purpose of which is to regulate or stop the flow of fluid. In practical applications, the valve assembly can take various forms. For example, it can be a passive check valve to ensure unidirectional flow of material and prevent backflow; or it can be an active control valve, such as a ball valve, butterfly valve, gate valve, or solenoid valve, etc., to achieve precise opening, closing, or flow regulation of the transverse outlet 8 through external operation or an automated system, flexibly controlling the timing and input amount of premixed material into the mixing chamber 1 according to actual production needs. When it is necessary to adjust the ratio of the mixed materials or pause the input of a certain component, this can be achieved by operating the corresponding valve assembly, thereby avoiding material waste or product defects caused by ratio imbalance. This control mechanism ensures the accuracy and adjustability of material input, providing a guarantee for achieving high-quality metal dot decoration.

[0062] Through the above technical solution, this application can achieve precise control over the entry of premixed materials into the mixing chamber 1, effectively solving the problem of difficult adjustment or inconsistency in material ratio in traditional solutions. Therefore, the input amount of each component can be flexibly adjusted according to different ceramic tile surface decoration requirements, ensuring the uniformity and stability of the mixture, significantly improving the quality and production efficiency of metal dot decoration, and effectively reducing material loss.

[0063] In some preferred embodiments, the valve assembly can be a solenoid valve. Specifically, when premixed material needs to be input into the mixing chamber 1, the PLC controller sends an opening signal to the corresponding solenoid valve according to a preset formula or real-time feedback, causing the transverse output port 8 to open and allowing the premixed material to enter. When the preset amount is reached or the input needs to be paused, the solenoid valve receives a closing signal and quickly stops the material flow. For example, in the production of ceramic tiles with different metal particle densities, the mixing ratio of metal particles, water, and thickener can be precisely controlled by adjusting the opening time and frequency of the solenoid valve, thereby achieving fine adjustment of the decorative effect. This automated control method not only improves the accuracy and repeatability of production but also greatly reduces the complexity and error of manual operation.

[0064] This application further proposes that one-way check valves be installed at the outlet ends of the particulate inlet 2, the air pressure inlet 3, the liquid inlet 4, and the thickener inlet 5 to prevent backflow and blockage.

[0065] Specifically, a one-way check valve is a valve that allows the medium to flow in only one direction. When the medium flows in the opposite direction, the valve automatically closes, thus preventing backflow. The one-way check valve installed at the outlet of the particulate inlet 2 is designed to prevent the mixture or gas in the mixing chamber 1 from flowing back into the particulate inlet 2, ensuring a clean and unobstructed input channel for metal particles or ceramic powder. The one-way check valve installed at the outlet of the air pressure inlet 3 is used to prevent the material or gas in the mixing chamber 1 from flowing back into the air pressure source, protecting the air pressure source from contamination. The one-way check valves installed at the outlets of the liquid inlet 4 and the thickener inlet 5 are respectively used to prevent backflow of water and thickener when spraying stops or pressure fluctuates, avoiding contamination of the liquid and thickener supply lines by the mixture in the mixing chamber 1.

[0066] This application installs one-way check valves at the outlet ends of each inlet, ensuring that materials (including metal particles, ceramic powder, water, and thickeners) and gases can only flow into the mixing chamber 1 in one direction. When the pressure inside the mixing chamber 1 exceeds the pressure in the inlet pipeline, or when the device stops operating, the one-way check valves automatically close, effectively preventing the backflow of materials or gases from the mixing chamber 1 into their respective inlet pipelines. It is precisely this unidirectional flow characteristic that keeps the inlet pipelines clean, preventing material backflow and pipeline blockage, thereby ensuring the continuous and stable operation of the device.

[0067] Through the above technical solution, this application effectively solves the problems of material backflow and pipeline blockage that may exist in existing equipment. This not only significantly improves the operational reliability and stability of the ceramic tile surface metal dot decoration mixing spraying device and reduces downtime maintenance time caused by backflow and blockage, but also reduces material waste and cleaning costs. In addition, by protecting each input pipeline from contamination, the service life of related components is extended, further improving the overall economic benefits and production efficiency of the equipment.

[0068] In some preferred embodiments, the one-way check valve can be of various forms, such as a ball valve, a lift valve, or a swing valve. The specific selection can be adjusted according to factors such as the viscosity, pressure, flow rate of the material, and installation space. For example, for the particulate inlet 2, a check valve with good sealing performance and low flow resistance can be selected to ensure the smooth flow of particles. For the liquid inlet 4 and the thickener inlet 5, corrosion-resistant and well-sealing check valves can be selected to accommodate the characteristics of water and thickener. The check valve should be installed as close as possible to the inlet of the mixing chamber 1 to minimize the risk of backflow. In practical applications, the check valve can be connected to the corresponding input pipeline using threaded connections, flange connections, or welding to ensure a secure and airtight connection.

[0069] This application further proposes that the inner wall of the mixing chamber 1 be made of polished ceramic material to reduce material adhesion. All internal pipes of the aforementioned devices can also be made of polished ceramic material. Specifically, polished ceramic material refers to ceramic material that has undergone fine grinding and polishing, resulting in a surface with extremely high smoothness and very low micro-roughness. Commonly used ceramic materials include alumina ceramics, zirconia ceramics, and silicon carbide ceramics, which possess excellent wear resistance, corrosion resistance, and chemical stability. This application effectively solves the material adhesion problem by making the inner wall of the mixing chamber 1 of polished ceramic material. When the material flows and is stirred within the mixing chamber 1, the frictional resistance between it and the smooth ceramic surface is reduced, allowing the material to slide more smoothly and reducing the likelihood of stagnation zones or adhesion layers. Furthermore, the chemical inertness of the ceramic material makes it less likely to react chemically with certain components in the mixture, further reducing the possibility of adhesion. This design ensures that the mixture maintains good flowability within the mixing chamber 1, thereby achieving a more uniform mixing effect and providing a stable material supply for the subsequent spraying process.

[0070] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A mixed spraying device for applying metallic dots to ceramic tile surfaces, characterized in that, include: Mixing chamber (1); It is also provided with a particle input port (2) for feeding metal particles or ceramic powder into the mixing chamber (1) in a vertically falling manner, and its outlet end extends to the upper middle part of the mixing chamber (1); It is also provided with an air pressure input port (3) for connecting an adjustable air pressure source to the mixing chamber (1); It is also provided with a liquid inlet (4) and a thickener inlet (5) for injecting water and thickener into the mixing chamber (1) in a horizontal spray manner, respectively, and the outlet end is lower than the outlet end of the particle inlet (2); It is also equipped with a spray nozzle (6) for spraying the mixture onto the brick surface to form metallic dot decoration.

2. The ceramic tile surface metal dot decoration mixed spraying device according to claim 1, characterized in that, The spray nozzle (6) is provided in multiple ways and is inclined. By adjusting the air pressure connected to the air pressure input port (3), the coarseness of the material discharged from the spray nozzle (6) can be changed.

3. The ceramic tile surface metal dot decoration mixed spraying device according to claim 1, characterized in that, The top of the particle input port (2) is forked into a first input port (21) for inputting metal particles, a second input port (22) for inputting metal powder, and a third input port (23) for inputting ceramic powder.

4. The ceramic tile surface metal dot decoration mixed spraying device according to claim 3, characterized in that, The end of the particle input port (2) is connected to a distributor (24) in the shape of an inverted funnel, and the bottom of the distributor (24) is uniformly provided with multiple radial spray holes.

5. The ceramic tile surface metal dot decoration mixed spraying device according to claim 4, characterized in that, The second input port (22) is connected to a pressurized metal powder input source, so that metal powder, metal particles and ceramic powder are uniformly sprayed out from the distributor (24) to form the mixture with the water and thickener input from the liquid input port (4) and the thickener input port (5).

6. The ceramic tile surface metal dot decoration mixed spraying device according to claim 1, characterized in that, The opening of the air pressure inlet (3) is lower than that of the particle inlet (2). Two air pressure inlets (3) are symmetrically arranged next to the particle inlet (2). The two air pressure inlets (3) and the liquid inlet (4) and the thickener inlet (5) respectively converge at the top of the mixing chamber (1) to the straight pipe (7). The outlet of the straight pipe (7) extends to the bottom of the mixing chamber (1).

7. The ceramic tile surface metal dot decoration mixed spraying device according to claim 6, characterized in that, The straight pipe (7) has at least one pair of transverse outlets (8) on its side wall, so that the gas, liquid and thickener components are premixed in the straight pipe (7) and then enter the mixing chamber (1) through the transverse outlets (8), or enter the mixing chamber (1) from the bottom end of the straight pipe (7).

8. The ceramic tile surface metal dot decoration mixed spraying device according to claim 7, characterized in that, A valve assembly is installed at each of the lateral outlets (8) for controlling the opening and closing of the lateral outlets (8).

9. A ceramic tile surface metal dot decoration mixing spraying device according to claim 1, characterized in that, The outlets of the particle inlet (2), the air pressure inlet (3), the liquid inlet (4), and the thickener inlet (5) are all equipped with one-way check valves to prevent backflow and blockage.

10. A ceramic tile surface metal dot decoration mixing spraying device according to claim 1, characterized in that, The inner wall of the mixing chamber (1) is made of polished ceramic material to reduce material adhesion.

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