A high-efficiency thermal stirring device for UV ink

Abstract

The utility model relates to ink stirring technical field especially is a kind of UV ink high -efficient hot stirring device, including stirring tank, heating shell is sleeved in the stirring tank peripheral side, electric heating tube is sleeved in the stirring tank peripheral side in heating shell, temperature sensor is arranged in the heating shell inner wall, inlet pipe is communicated and is arranged in the heating shell peripheral side, controller is arranged in the heating shell peripheral side.The utility model discloses a kind of UV ink high -efficient hot stirring device, by setting up by thread-like electric heating tube, the heating shell filled with heat conducting medium, temperature sensor and the heating system of controller, the even, fast heating and accurate temperature closed-loop control of stirring tank are realized.The structure can effectively ensure that UV ink is in optimum and stable process temperature in the whole stirring process, significantly improves the viscosity instability problem caused by temperature fluctuation, to improve the consistency and reliability of product quality.

Description

Technical Field

[0001] This utility model relates to the field of ink stirring technology, and in particular to a high-efficiency thermal stirring device for UV ink. Background Technology

[0002] UV ink refers to ink that, under ultraviolet (UV) irradiation, utilizes UV light of different wavelengths and energies to polymerize monomers in the ink binder, causing the ink to form a film and dry. UV ink is also a type of ink, and as inks, they must possess vibrant colors, good printability, and suitable curing and drying rates. Simultaneously, UV ink has good adhesion and properties such as abrasion resistance, corrosion resistance, and weather resistance. UV ink is a solvent-free ink that dries quickly, has good gloss, vibrant colors, and good water, solvent, and abrasion resistance. UV ink has become a relatively mature ink technology, with near-zero pollutant emissions. UV ink exhibits selective absorption of UV light. Drying is affected by the total energy of the UV light source and the energy distribution of different wavelengths. Under UV light irradiation, the photopolymerization initiator of UV ink absorbs photons of a certain wavelength, exciting to an excited state and forming free radicals or ions. Then, through intermolecular energy transfer, the prepolymer, photosensitive monomers, and polymer become excited, producing charge-transfer complexes. These complex particles continuously cross-link and polymerize, curing into a film.

[0003] However, traditional UV ink production requires mixing and stirring of all ink components to obtain stable UV ink. Temperature has a significant impact on the viscosity of UV ink. Traditional UV ink stirring equipment, such as the technology protected by the patent application number CN201921942061.4 entitled "UV Ink Stirring Device," does not consider the effect of temperature on UV ink and cannot effectively control the viscosity of UV ink. Therefore, we propose a high-efficiency thermal stirring device for UV ink. Utility Model Content

[0004] The main objective of this invention is to provide a high-efficiency thermal stirring device for UV inks, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency thermal stirring device for UV ink includes a stirring tank, a heating shell fitted around the periphery of the stirring tank, an electric heating tube fitted inside the heating shell around the periphery of the stirring tank, a temperature sensor installed on the inner wall of the heating shell, an inlet pipe connected to the periphery of the heating shell, a controller installed on the periphery of the heating shell, a discharge pipe connected to the bottom surface of the stirring tank, a solenoid valve installed on the periphery of the discharge pipe, and a top cover installed at the opening on the upper surface of the stirring tank.

[0006] Preferably, a servo motor is provided on the upper surface of the upper cover, a stirring rod is provided at the output end of the servo motor, stirring plates are symmetrically arranged on the periphery of the stirring rod, a plurality of round holes and elongated grooves are respectively opened on the surface of the stirring plates, and connecting rods are provided at both ends of the periphery of the stirring rod, and a scraper is provided at one end of the connecting rod.

[0007] Preferably, the bottom surface of the upper cover has a mounting groove, and an annular tube is installed inside the mounting groove. Several nozzles are connected to the circumferential side of the annular tube, and a feed pipe is connected to the upper surface of the upper cover to the left of the servo motor. By adopting the above technical solution, the ink flow is made more stable and the generation of air bubbles is reduced by opening several round holes and elongated grooves on the surface of the stirring plate.

[0008] Preferably, a water pump is provided on the upper surface of the cover to the right of the servo motor, the water pump's pumping end is connected to a water pipe, and the water pump's outlet end is fixedly connected to and communicates with the annular pipe.

[0009] Preferably, the controller is electrically connected to an external power source, and the controller is connected to the water pump, servo motor, temperature sensor and solenoid valve wires. The electric heating tube has a threaded structure, and one end of the water pipe is connected to an external water source.

[0010] Preferably, the scraper is in close contact with the inner wall of the mixing tank, and the electric heating tube is in close contact with the peripheral side of the mixing tank. By adopting the above technical solution: the threaded structure of the electric heating tube can increase the heating area, allowing the tank to heat up faster; the heating shell is made of stainless steel; and the peripheral side of the heating shell can be fitted with a heat insulation sleeve made of polyurethane foam.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model achieves uniform and rapid heating of the mixing tank and precise closed-loop temperature control by setting up a heating system consisting of a threaded electric heating tube, a heating shell filled with a heat-conducting medium, a temperature sensor, and a controller. This structure effectively ensures that the UV ink is at the optimal and stable process temperature throughout the mixing process, significantly improving the viscosity instability problem caused by temperature fluctuations, thereby improving the consistency and reliability of product quality.

[0012] 2. This utility model achieves efficient, low-bubble mixing by setting up a stirring plate with circular holes and elongated grooves on its surface, and a scraper that fits tightly against the tank wall. The special stirring plate structure provides sufficient shear force while reducing eddies and resistance, smoothly cutting and dispersing bubbles, and greatly reducing the bubble content in the finished product; the scraper can continuously scrape off cold material from the tank wall, preventing material from crusting, ensuring that all materials participate in the mixing evenly, improving heat exchange efficiency, and saving energy.

[0013] 3. This utility model achieves automated cleaning of equipment by integrating a cleaning system consisting of a water pump, a ring pipe, and a nozzle. This design greatly reduces the labor intensity of manual cleaning, shortens equipment maintenance time, and effectively avoids cross-contamination between different batches or colors of ink, ensuring production flexibility and hygiene. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency thermal stirring device for UV ink according to the present invention. Figure 2 This is a left view of a high-efficiency thermal stirring device for UV ink according to this utility model; Figure 3 This utility model Figure 2 Cross-sectional view of section AA; Figure 4 This is a schematic diagram of the stirring rod of a high-efficiency thermal stirring device for UV ink according to this utility model.

[0015] In the diagram: 1. Mixing tank; 11. Heating shell; 110. Electric heating element; 111. Temperature sensor; 112. Liquid inlet pipe; 12. Controller; 13. Discharge pipe; 130. Solenoid valve; 2. Top cover; 20. Mounting groove; 201. Annular pipe; 202. Nozzle; 203. Feed pipe; 21. Servo motor; 210. Stirring rod; 211. Stirring plate; 212. Round hole; 213. Long groove; 22. Connecting rod; 220. Scraper; 23. Water pump; 230. Water pipe. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figure 1-4 This utility model provides a technical solution: A high-efficiency thermal stirring device for UV ink includes a stirring tank 1, a heating shell 11 fitted around the periphery of the stirring tank 1, an electric heating tube 110 fitted inside the heating shell 11 on the periphery of the stirring tank 1, a temperature sensor 111 installed on the inner wall of the heating shell 11, an inlet pipe 112 connected to the periphery of the heating shell 11, a controller 12 installed on the periphery of the heating shell 11, a discharge pipe 13 connected to the bottom surface of the stirring tank 1, a solenoid valve 130 installed on the periphery of the discharge pipe 13, and a top cover 2 installed at the opening on the upper surface of the stirring tank 1.

[0020] In this embodiment, a servo motor 21 is provided on the upper surface of the upper cover 2, and a stirring rod 210 is provided at the output end of the servo motor 21. A stirring plate 211 is symmetrically arranged on the circumferential side of the stirring rod 210. A plurality of round holes 212 and elongated grooves 213 are respectively opened on the surface of the stirring plate 211. A connecting rod 22 is provided at both ends of the circumferential side of the stirring rod 210, and a scraper 220 is provided at one end of the connecting rod 22. An installation groove 20 is opened on the bottom surface of the upper cover 2, and an annular tube 201 is provided in the installation groove 20. A plurality of nozzles 202 are connected to the circumferential side of the annular tube 201. A nozzle 202 is connected to the left side of the servo motor 21 on the upper surface of the upper cover 2. A feed pipe 203 is provided. A water pump 23 is located on the upper surface of the cover 2 to the right of the servo motor 21. A water pipe 230 is connected to the water pump 23's pumping end. The water pump 23's outlet end is fixedly connected to and communicates with the annular pipe 201. The controller 12 is electrically connected to an external power supply. The controller 12 is wired to the water pump 23, the servo motor 21, the temperature sensor 111, and the solenoid valve 130. The electric heating tube 110 has a threaded structure. One end of the water pipe 230 is connected to an external water source. The scraper 220 is tightly fitted to the inner wall of the mixing tank 1. The electric heating tube 110 is tightly fitted to the surrounding side of the mixing tank 1. The above scheme involves adding the UV ink components to the mixing tank 1 via the feed pipe 203. The solenoid valve 130 on the discharge pipe 13 is closed. The controller 12 activates the electric heating element 110. The electric heating element 110 has a threaded structure and fits tightly against the outer wall of the mixing tank 1, greatly increasing the contact area and enabling efficient and rapid heat transfer to the tank wall. The heating shell 11 is filled with a heat transfer medium such as water or heat transfer oil through the liquid inlet pipe 112, ensuring that heat is evenly transferred to the entire periphery of the mixing tank 1, avoiding localized overheating. The temperature sensor 111 monitors the temperature of the heat transfer medium in real time and feeds the signal back to the controller 12. The controller 12 intelligently adjusts the power of the electric heating element 110 according to the preset temperature program, achieving precise closed-loop control of the ink heating process. This ensures that the ink is always at the optimal reaction temperature and effectively controls its viscosity. The controller 12 starts the servo motor 21, driving the stirring rod 210 and the stirring plate 211 fixed on it to rotate. The symmetrically arranged stirring plate 211 generates strong shearing force and convection circulation on the ink, so that the components are quickly and evenly mixed. The specially designed round holes 212 and elongated grooves 213 on the stirring plate 211 can reduce eddies and resistance during the stirring process, making the ink flow more stable, effectively cutting and dispersing air bubbles, significantly reducing the generation of air bubbles, and improving product quality. At the same time, the scraper 220 fixed on the stirring rod 210 rotates synchronously with the rod. Since it is in close contact with the inner wall of the mixing tank 1, it can continuously scrape off the ink adhering to the tank wall and bottom. After the stirring and heating process is completed, the controller 12 opens the solenoid valve 130 on the discharge pipe 13. Under the action of gravity or pumping, the uniformly mixed and appropriately heated UV ink is discharged through the discharge pipe 13.

[0021] It should be noted that the UV ink components are added to the mixing tank 1 through the feed pipe 203, the solenoid valve 130 on the discharge pipe 13 is in the closed state, and the controller 12 activates the electric heating tube 110. The electric heating tube 110 has a threaded structure and fits tightly against the outer wall of the mixing tank 1, greatly increasing the contact area and enabling efficient and rapid heat transfer to the tank wall. The heating shell 11 is filled with water or heat transfer oil or other heat transfer medium through the liquid inlet pipe 112 to ensure that heat can be evenly transferred to the entire periphery of the mixing tank 1, avoiding local overheating. The temperature sensor 111 provides real-time temperature control. The temperature of the heat-conducting medium is monitored and fed back to the controller 12. The controller 12 intelligently adjusts the power of the electric heating tube 110 according to the preset temperature program to achieve precise closed-loop control of the ink heating process, ensuring that the ink is always at the optimal reaction temperature and effectively controlling its viscosity. The controller 12 starts the servo motor 21, driving the stirring rod 210 and the stirring plate 211 fixed on it to rotate. The symmetrically arranged stirring plate 211 generates strong shear force and convection circulation on the ink, so that the components are quickly and evenly mixed. The stirring plate 211 has specially designed round holes 212. The elongated groove 213 reduces eddies and resistance during the stirring process, resulting in smoother ink flow, effectively cutting and dispersing air bubbles, significantly reducing bubble formation, and improving product quality. Simultaneously, the scraper 220, fixed to the stirring rod 210, rotates synchronously with the rod. Because it is in close contact with the inner wall of the mixing tank 1, it continuously scrapes away ink adhering to the tank wall and bottom. After the stirring and heating process is complete, the controller 12 opens the solenoid valve 130 on the discharge pipe 13. Under gravity or pumping, the uniformly mixed and appropriately heated UV ink is discharged through the discharge pipe 13. When replacement is needed... When the ink color or batch changes, the controller 12 starts the water pump 23. External clean water or cleaning fluid is pumped into the annular pipe 201 through the water pipe 230. The cleaning fluid is sprayed out from several nozzles 202 evenly distributed on the annular pipe 201, forming a shower-like water curtain covering the inner wall of the mixing tank 1 and the mixing components. At the same time, the servo motor 21 can be started to rotate at low speed, driving the scraper 220 and the stirring plate 211 to rotate. The scraper 220 scrapes off the residual ink, and the stirring plate 211 stirs the cleaning fluid, thereby achieving efficient and automatic cleaning of the tank, greatly reducing the workload of manual cleaning and avoiding cross-contamination.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency thermal stirring device for UV inks, comprising a stirring tank (1), characterized in that: The mixing tank (1) is fitted with a heating shell (11) on its periphery. An electric heating tube (110) is fitted inside the heating shell (11) on the periphery of the mixing tank (1). A temperature sensor (111) is installed on the inner wall of the heating shell (11). An inlet pipe (112) is connected to the periphery of the heating shell (11). A controller (12) is installed on the periphery of the heating shell (11). A discharge pipe (13) is connected to the bottom surface of the mixing tank (1). A solenoid valve (130) is installed on the periphery of the discharge pipe (13). A top cover (2) is installed at the opening on the upper surface of the mixing tank (1).

2. The UV ink high-efficiency thermal stirring device according to claim 1, characterized in that: The upper surface of the cover (2) is provided with a servo motor (21), and the output end of the servo motor (21) is provided with a stirring rod (210). The stirring rod (210) is symmetrically provided with stirring plates (211) on its periphery. The surface of the stirring plate (211) is provided with several round holes (212) and elongated grooves (213). Both ends of the stirring rod (210) are provided with connecting rods (22), and one end of the connecting rod (22) is provided with a scraper (220).

3. The UV ink high-efficiency thermal stirring device according to claim 1, characterized in that: The bottom surface of the upper cover (2) is provided with an installation groove (20), and an annular tube (201) is provided in the installation groove (20). Several nozzles (202) are connected to the circumferential side of the annular tube (201). The upper surface of the upper cover (2) is connected to the left side of the servo motor (21) with a feed pipe (203).

4. The UV ink high-efficiency thermal stirring device according to claim 3, characterized in that: A water pump (23) is provided on the upper surface of the cover (2) to the right of the servo motor (21). The water pump (23) is connected to a water pipe (230) at its pumping end. The water pump (23) is fixedly connected to an annular pipe (201) at its outlet end and communicates with the annular pipe (201).

5. The high-efficiency thermal stirring device for UV ink according to claim 4, characterized in that: The controller (12) is electrically connected to an external power source. The controller (12) is wired to a water pump (23), a servo motor (21), a temperature sensor (111), and a solenoid valve (130). The electric heating tube (110) has a threaded structure. One end of the water pipe (230) is connected to an external water source.

6. The UV ink high-efficiency thermal stirring device according to claim 2, characterized in that: The scraper (220) is in close contact with the inner wall of the mixing tank (1), and the electric heating tube (110) is in close contact with the periphery of the mixing tank (1).

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