Environment-friendly glue preparation device for children's picture book production and process thereof

Abstract

The present application relates to the technical field of glue production, in particular to an environmentally-friendly glue preparation device for children's picture book production and a process thereof, comprising a stirring tank and a stirring part arranged inside the stirring tank, the stirring part is internally provided with a heat conduction part for uniformly heating the glue in the tank for stirring, an oil temperature machine is installed outside the stirring tank for supplying heat oil to the heat conduction part; the stirring part comprises a heat insulation cylinder and a plurality of stirring pipes; the heat conduction part comprises a pair of oil pipes, a pair of oil inlet pipes, a pair of oil return pipes and an oil distribution sleeve, the two oil pipes are U-shaped pipes and are vertically arranged inside the heat insulation cylinder, a plurality of U-shaped oil distribution pipes are vertically inserted into one side wall of the oil pipes, and the oil distribution pipes are sleeved with the stirring pipes. In the present application, the oil distribution pipes are embedded in the stirring pipes, the heat oil is distributed into the rotating stirring pipes through the oil distribution sleeve, the heat is radially diffused, a rotating heat conduction system is formed to complete dynamic uniform heating, and the effect of eliminating local overheating and eliminating the phenomenon of local continuous decomposition of the glue is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of glue production, in particular to an environmentally-friendly glue preparation device for children's picture book production and a process thereof. BACKGROUND

[0002] The core problem of children's picture book glue is safety. Children's products have zero tolerance for volatile organic compounds and heavy metals. If the glue is directly contacted and heated and stirred for processing, local overheating will release harmful substances. Application No. 202320041307.0 discloses an environmentally-friendly glue preparation device for preventing dry glue, which comprises a tank body and a heating assembly. The tank body is an integrally formed steel structure, and the heating assembly for preventing dry glue is arranged inside the tank body. The heating assembly comprises a heat conduction cylinder, a heating pipe, a small generator, a jacket, a water inlet, a heat preservation pad, a sealing cover and a sealing plug. The heat conduction cylinder is installed at the center of the tank body, and the inner wall of the heat conduction cylinder is provided with the heating pipe. The bottom of the heat conduction cylinder is provided with the small generator, and the outer surface of the tank body is provided with the jacket. The patent adopts the cooperation between multiple components. The glue is always kept smooth by the heating assembly, dry glue is prevented, the internal raw materials are fully stirred by the stirring assembly, the raw materials are fully mixed and uniform, and the quality of the finished product is ensured.

[0003] The glue preparation device disclosed in the above patent prevents dry glue by the combination of the heat conduction cylinder and the jacket, but has the following significant defects: uneven heating: local glue overheating and decomposition are easy to occur in the center of the heat conduction cylinder, and trace harmful substances are released; passive dry glue prevention: the water inlet jacket needs manual maintenance, and the heat preservation effect sharply decreases after the water temperature decreases. Therefore, it is urgent to develop a device with uniform heating and dry glue prevention to meet the safety requirements of children's picture book production. SUMMARY

[0004] In order to overcome the defects in the prior art, the purpose of the present application is to provide an environmentally-friendly glue preparation device for children's picture book production and a process thereof. The glue is produced by the synergistic action of rotating distributed heat conduction, low shear stirring and dynamic sealing oil supply, and the safety problem of children's picture book glue production is fundamentally solved.

[0005] To achieve the above-mentioned purpose, on the one hand, the application provides an environmentally-friendly glue preparation device for children's picture book production, which comprises a stirring tank and a stirring motor mounted on the top of the stirring tank. The inside of the stirring tank is provided with a stirring part, and the stirring part is coaxially connected with the stirring motor. The inside of the stirring part is provided with a heat conduction part for uniformly heating the glue in the tank for stirring. An oil heater is mounted on the outside of the stirring tank for supplying hot oil to the heat conduction part.

[0006] The stirring part comprises a heat insulation cylinder and a plurality of stirring pipes, the heat insulation cylinder is arranged on the central shaft of the stirring tank, and the plurality of stirring pipes are symmetrically inserted into the outer wall of the heat insulation cylinder in two rows; the heat conduction part comprises a pair of oil passing pipes, a pair of oil inlet pipes, a pair of oil return pipes and an oil distribution sleeve, the two oil passing pipes are U-shaped pipes and are vertically arranged in the heat insulation cylinder, a side wall of the oil passing pipe is vertically inserted with a plurality of U-shaped oil distribution pipes, and the oil distribution pipe is sleeved with the stirring pipe;

[0007] The oil distribution sleeve is a hollow ring with an open inner hole wall and is sleeved with the top positioning sleeve of the heat insulation cylinder, a boss is arranged in the middle layer of the inner side wall of the oil distribution sleeve to divide the inner part of the oil distribution sleeve into two oil storage cavities, the two top ends of the oil passing pipe are inserted into the two oil storage cavities in a staggered manner, a pair of oil inlet pipes and a pair of oil return pipes are inserted into the outer wall of the oil distribution sleeve in a staggered manner and are connected with the pump oil end and the oil return end of the oil temperature machine, and then a rotating heat supply channel is formed in the stirring tank to uniformly heat the glue.

[0008] The above arrangement is to prevent the decomposition of harmful substances caused by local continuous heating during the heating and stirring of the glue, to ensure the safety of the environmentally friendly glue for children's picture books, to disperse the heating of the fixed area in the prior art and to heat the glue by the path of stirring rotation, to complete dynamic uniform heating by the innovation of rotating distributed heat conduction and dynamic sealing oil supply, to eliminate local overheating, to complete rotating state cycle heating and to fundamentally solve the safety of the production of children's picture book glue.

[0009] As a further improvement of the technical solution, the output end of the stirring motor is coaxially connected with a stirring shaft, the stirring shaft penetrates the central shaft of the heat insulation cylinder and is tightly sleeved and matched at the bottom, and the upper end of the heat insulation cylinder is sleeved with a sealing ring.

[0010] As a further improvement of the technical solution, three sealing grooves are equally arranged on the top side wall of the heat insulation cylinder, a sealing ring is bonded to the inner hole side wall of the oil distribution sleeve, and the sealing ring is sleeved with the sealing groove in a corresponding and adaptive manner.

[0011] The two arrangements are to ensure that the hot oil passes through the stirring pipe in rotation, and the oil distribution sleeve is designed to be positioned and sealed with the heat insulation cylinder, so that the hot oil circulation supply channel is formed without rotation.

[0012] As a further improvement of the technical solution, two pairs of through holes are arranged on one side wall of the heat insulation cylinder and between the three sealing grooves, the high-position top end of the oil passing pipe is sleeved and matched with the upper through hole, and the low-position top end of the oil passing pipe is sleeved and matched with the lower through hole; two pairs of oil inlet holes are arranged on the outer side wall of the oil distribution sleeve and penetrate the oil storage cavities, the oil inlet pipe is sleeved and matched with the upper oil inlet hole, and the oil return pipe is sleeved and matched with the lower oil inlet hole.

[0013] This arrangement clearly shows how the heat oil is transferred between the outer oil pipe and the inner oil pipe, mainly through the oil distribution sleeve to form two layers of oil storage cavities, and the alignment of the oil inlet and the oil inlet, that is, the upper layer of the oil storage cavity supplies oil, and the lower layer of the oil storage cavity returns oil, so as to circulate heat and achieve the effect of dynamically adjusting the glue temperature.

[0014] As a further improvement of the technical solution, the oil pipe is not in contact with the heat insulation cylinder and the stirring shaft, and the inside of the heat insulation cylinder is a hollow structure to form a heat insulation cavity.

[0015] This arrangement further eliminates the problem of excessive local heat transfer, and through the heat insulation material of the heat insulation cylinder and the structure of the heat insulation cavity, a double heat insulation effect is formed.

[0016] As a further improvement of the technical solution, the outer side wall of the heat insulation cylinder is symmetrically inserted with a plurality of sleeve heads, one end of the stirring pipe is tightly sleeved with the sleeve head; the bottom surface of the stirring pipe is vertically embedded with a plurality of stirring hairs at equal intervals in the axial direction, the stirring hairs are made of silica gel material, the other end of the stirring pipe is sleeved with a wall scraping block, and a spring is arranged between the wall scraping block and the stirring pipe.

[0017] This arrangement uses an elastic push to make the wall scraping block tightly adhere to the tank wall, rotates synchronously with the stirring pipe to scrape the glue, reduces the amount of residual glue on the tank wall, and thus reduces the difficulty of subsequent cleaning.

[0018] As a further improvement of the technical solution, the top surface of the stirring tank is embedded with a water content sensor and a temperature sensor for monitoring the internal water evaporation and temperature, and the top surface of the stirring pipe is embedded with an online viscosity meter for monitoring the viscosity of the glue, and the online viscosity meter is composed of a wireless module, a viscosity sensor and a battery module.

[0019] This arrangement uses existing sensors with temperature, moisture and viscosity monitoring functions for real-time monitoring, and feedback triggers the control end for compensation, such as oil temperature control to control the glue stirring temperature, and water pump control to regulate water supply.

[0020] As a further improvement of the technical solution, the bottom of the stirring tank is fixedly connected with a base, the side wall of the base is provided with a discharge nozzle, the top side wall of the stirring tank is provided with a feeding nozzle for supplementing water and nitrogen, the bottom of the stirring tank is funnel-shaped and connected with the discharge nozzle through an elbow pipe, and the bottom end of the stirring shaft is annularly and equally spacedly sleeved with a plurality of guide scraping plates, the guide scraping plates are triangular plates and their oblique edges are slidingly connected with the arc surface of the bottom of the stirring tank.

[0021] On the other hand, the present application provides an environmentally friendly glue preparation process for the production of children's picture books, which uses the above-mentioned environmentally friendly glue preparation device for the production of children's picture books, comprising the following steps:

[0022] S1, nitrogen is introduced into the stirring tank until the oxygen concentration is ≤0.5%;

[0023] S2, start the oil temperature machine to pump hot oil into the oil inlet pipe, disperse into several oil distribution pipes through the oil distribution pipe, and recycle from the oil return pipe to the oil temperature machine for heating and temperature control, control the glue solution temperature at 40-50℃;

[0024] S3, at the same time, start the stirring motor to drive the stirring shaft to rotate the stirring pipes at low speed to stir the glue in the stirring tank, forming a uniform rotating heating;

[0025] S4, when the water content detected by the water content sensor is lower than the set value or the predicted evaporation amount exceeds the standard, deionized water is atomized and injected into the tank through the feeding nozzle;

[0026] S5, after the glue is stirred, it is discharged from the discharge nozzle, and then enters the incubator after UV sterilization and nanometer filtration.

[0027] As a further improvement of the technical solution, the online viscometer in S2 dynamically adjusts the oil temperature according to the monitoring temperature of the temperature sensor, so that the viscosity is maintained at 2000±200cP.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] 1. The environmentally friendly glue preparation device and process for producing children's picture books, by embedding oil distribution pipes in the stirring pipes, hot oil is distributed into rotating stirring pipes through the oil distribution sleeve, and the heat is radially diffused, forming a rotating heat conduction system to complete dynamic and uniform heating, and eliminating the effect of local overheating and the phenomenon of local continuous decomposition of glue.

[0030] 2. The environmentally friendly glue preparation device and process for producing children's picture books, the rotating state continuous oil supply is completed by the dynamic sealing structure of the oil distribution sleeve, the sealing ring and the sealing groove form a rotating seal, and the inlet and return oil pipes independently circulate hot oil through the staggered oil storage cavity, achieving the effect of heat transfer to moving parts with zero leakage heat exchange.

[0031] 3. The environmentally friendly glue preparation device and process for producing children's picture books, by injecting nitrogen layer into the tank to inhibit oxidation, the water pump is triggered by the water content sensor to atomize and supplement water to the feeding nozzle, and the viscosity is constant and stable by closed loop control of the online viscometer and the oil temperature machine, forming a double dry glue prevention mechanism, and achieving the effect of precise control of water content.

[0032] 4. The environmentally friendly glue preparation device and process for producing children's picture books, the tank wall is self-cleaning by the spring elastic pressure structure of the wall scraping block, the spring pushes the wall scraping block to tightly adhere to the tank wall, and the glue is scraped with the rotation of the stirring pipe, achieving the effect of improving the continuity of production and reducing the amount of residual glue on the tank wall, thereby reducing the difficulty of subsequent cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings described herein are for purposes of illustration only and are not intended to limit the scope of the present disclosure in any way. Additionally, the shapes and relative sizes of the components in the drawings are merely intended to facilitate understanding of the present disclosure and are not necessarily meant to be accurate representations of the actual shapes and relative sizes of the components. Those skilled in the art will recognize that the various possible shapes and relative sizes of the components are merely exemplary and are not intended to limit the scope of the present disclosure.

[0034] Figure 1 is a schematic view of the overall assembly structure of the present application;

[0035] Figure 2 is a schematic view of the overall internal assembly structure of the present application;

[0036] Figure 3 is a schematic view of the partial assembly structure of the stirring tank of the present application;

[0037] Figure 4 is a schematic view of the assembly structure of the stirring portion and the heat conducting portion of the present application;

[0038] Figure 5 is a schematic view of the assembly structure of the stirring portion and the heat conducting portion of the present application;

[0039] Figure 6 is a front view of the present application; Figure 5

[0040] Figure 7 is an assembly and disassembly view of the heat insulation cylinder and the heat conducting portion of the present application;

[0041] Figure 8 is a full sectional view of the oil distribution sleeve of the present application;

[0042] Figure 9 is an assembly and disassembly view of the stirring tube and the oil passage tube of the present application;

[0043] The meanings of the various reference numerals in the drawings are as follows:

[0044] 100, stirring tank; 101, base; 102, material injection nozzle; 110, stirring motor; 111, stirring shaft; 120, material discharge nozzle; 130, material guide scraper;

[0045] 200, stirring portion; 210, heat insulation cylinder; 211, sealing groove; 212, passage opening; 213, sleeve head; 220, stirring tube; 221, stirring whisk; 230, wall scraping block; 231, spring;

[0046] 300, heat conducting portion; 310, oil passage tube; 3101, insertion opening; 311, oil distribution tube; 320, oil inlet tube; 330, oil return tube; 340, oil distribution sleeve; 341, oil storage cavity; 342, oil inlet opening; 343, sealing ring.​ DETAILED DESCRIPTION

[0047] The above detailed description of the application is only for the purpose of explaining the application, and should not be understood as a limitation to the application. Any possible variations based on the teachings of the application are deemed to fall within the scope of the application. The terms "mounting" and "connecting" should be interpreted broadly, and can mean direct connection or indirect connection through an intermediate medium.

[0048] The terms "central axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inner", "outer", and the like used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the application. In addition, in the description of the application, "several" means two or more, unless otherwise explicitly specified.

[0049] Please refer to Figures 1-6 As shown in the drawings, the present application provides an environmentally friendly glue preparation device for children's picture book production, which comprises a stirring tank 100 and a stirring motor 110 mounted on the top of the stirring tank 100. The inside of the stirring tank 100 is provided with a stirring part 200, which is coaxially connected with the stirring motor 110 to control the rotation of the stirring part 200 for stirring the glue. The inside of the stirring part 200 is provided with a heat conducting part 300 for uniformly heating the glue in the tank for stirring, so as to avoid the decomposition of the glue caused by direct and concentrated heating of the heat conducting part 300, which releases trace amounts of volatile mixtures. An oil heater is mounted on the outside of the stirring tank 100 to supply heat oil to the heat conducting part 300, which is a prior art and will not be described here.

[0050] Specifically, the stirring part 200 comprises a heat insulation cylinder 210 and a plurality of stirring pipes 220. The heat insulation cylinder 210 is placed on the central axis of the stirring tank 100, and the plurality of stirring pipes 220 are symmetrically inserted into the outer wall of the heat insulation cylinder 210 in two rows to form a range for horizontal rotation of the glue. The output end of the stirring motor 110 is coaxially connected with a stirring shaft 111, which passes through the central axis of the heat insulation cylinder 210 and is tightly sleeved at the bottom. The upper end of the heat insulation cylinder 210 is sleeved with a sealing ring between the stirring shaft 111, so that the heat insulation cylinder 210 rotates synchronously with the stirring shaft 111 to drive the plurality of stirring pipes 220 to rotate and stir the glue.

[0051] Further, the outer side wall of the heat insulation cylinder 210 is symmetrically inserted with a plurality of sleeve heads 213, one end of the stirring pipe 220 is tightly sleeved with the sleeve head 213; the bottom surface of the stirring pipe 220 is vertically embedded with a plurality of stirring whiskers 221 at an equal interval in the axial direction, the stirring whiskers 221 are made of silica gel material, which reduces the molecular chain rupture caused by shear glue at low speed; the other end of the stirring pipe 220 is sleeved with a wall scraping block 230, a spring 231 is arranged between the wall scraping block 230 and the stirring pipe 220, the wall scraping block 230 is always in contact with the tank wall to scrape off the glue by the spring 231, so as to avoid the glue wall agglomeration and reduce the difficulty of subsequent cleaning of the tank wall.

[0052] Further, the water and temperature sensors are embedded and installed on the top surface of the stirring tank 100 for monitoring the internal water evaporation and temperature, and the online viscosity meter is embedded on the top surface of the stirring pipe 220 for monitoring the viscosity of the glue, the online viscosity meter is composed of a wireless module, a viscosity sensor and a battery module, and the viscosity data is collected in real time by transmitting data through the wireless module.

[0053] Further, the base 101 is fixedly connected to the bottom of the stirring tank 100, which plays a role of increasing and supporting the stirring tank 100, so as to guide and discharge the glue from the bottom thereof; the side wall of the base 101 is provided with a discharge nozzle 120, and the top side wall of the stirring tank 100 is provided with a feeding nozzle 102, control valves are installed on the discharge nozzle 120 and the feeding nozzle 102 for supplementing water and nitrogen, the bottom of the stirring tank 100 is funnel-shaped and is connected to the discharge nozzle 120 through an elbow pipe, a plurality of guide scraping plates 130 are annularly and equidistantly sleeved on the bottom end of the stirring shaft 111, the guide scraping plates 130 are triangular plates and their oblique edges are slidingly connected to the arc surface of the bottom of the stirring tank 100, which is used for scraping the glue on the bottom of the tank and guiding it to flow out of the elbow pipe.

[0054] As shown in Figures 7-9 The heat conduction part 300 includes a pair of oil pipes 310, a pair of oil inlet pipes 320, a pair of oil return pipes 330 and an oil distribution sleeve 340, the two oil pipes 310 are U-shaped pipes and are vertically arranged inside the heat insulation cylinder 210, a plurality of U-shaped oil distribution pipes 311 are vertically inserted into one side wall of the oil pipe 310, a plurality of insertion ports 3101 are equidistantly and symmetrically formed in one side wall of the oil pipe 310, and the two ends of the oil distribution pipe 311 are inserted into a pair of insertion ports 3101; the oil distribution pipe 311 is sleeved with the stirring pipe 220; the stirring pipe 220 is made of heat conductive material, such as heat conductive metal, which is used for conducting heat from the hot oil in the oil distribution pipe 311 to the glue in the tank, so that the glue is stirred smoothly and agglomeration is avoided.

[0055] Specifically, the oil distribution sleeve 340 is a hollow ring with an opening on the inner hole wall and is connected with the positioning sleeve at the top of the heat insulation cylinder 210. Straight rods are fixedly connected to the outer side wall of the oil distribution sleeve 340 symmetrically, and the outer ends of the straight rods abut against the inner wall of the tank and are fixedly connected by bolts. The positioning of the oil distribution sleeve 340 is not rotated with the heat insulation cylinder 210, and continuous circulating oil supply is ensured. The middle layer of the inner side wall of the oil distribution sleeve 340 is provided with a boss, which divides the inside into two oil storage cavities 341 above and below. The two top ends of the oil pipe 310 are inserted into the two oil storage cavities 341 in a high-low staggered manner. A pair of oil inlet pipes 320 and a pair of oil return pipes 330 are inserted into the outer wall of the oil distribution sleeve 340 in a high-low staggered manner and are connected with the two oil storage cavities 341 in correspondence, thereby forming an oil passage with one inlet and one outlet. The pair of oil inlet pipes 320 and the pair of oil return pipes 330 are connected with the oil pump end and the oil return end of the oil temperature machine, respectively, so that a rotating heat supply passage is formed inside the stirring tank 100 to uniformly heat the glue.

[0056] Further, in order to ensure that the heat insulation cylinder 210 maintains a sealed oil passage state with the oil distribution sleeve 340 when rotating, three sealing grooves 211 are equally spaced on the top side wall of the heat insulation cylinder 210. The inner hole side wall of the oil distribution sleeve 340 is bonded with a sealing ring 343, which is made of rubber or silicone and has sealing property. The sealing ring 343 is correspondingly and adaptively connected with the sealing grooves 211.

[0057] Further, two pairs of through openings 212 are formed in the side wall of the heat insulation cylinder 210 between the three sealing grooves 211. The high-position top end of the oil pipe 310 is inserted into the upper through opening 212, and the low-position top end of the oil pipe 310 is inserted into the lower through opening 212. Two pairs of oil inlet openings 342 are formed in the outer side wall of the oil distribution sleeve 340 and penetrate the oil storage cavities 341. The oil inlet pipe 320 is inserted into the upper oil inlet opening 342, and the oil return pipe 330 is inserted into the lower oil inlet opening 342. The oil inlet pipe 320, the oil return pipe 330 and the oil pipe 310 are sealed by hot oil through the oil distribution sleeve 340, so that the stirring pipe 220 obtains heat energy in rotation and heats the glue.

[0058] Further, the oil pipe 310 does not contact the heat insulation cylinder 210 and the stirring shaft 111. The inside of the heat insulation cylinder 210 is hollow to form a heat insulation cavity. The heat insulation cylinder 210 with the hollow cavity has heat insulation property, which reduces the excessive concentration of the temperature of the oil pipe 310 and avoids the local continuous heating and decomposition of the glue in the central axis area of the tank.

[0059] The application also provides an environmentally friendly glue preparation process for the production of children's picture books, which uses the above-mentioned environmentally friendly glue preparation device for the production of children's picture books and includes the following steps:

[0060] S1, nitrogen is introduced into the stirring tank 100 until the oxygen concentration is ≤0.5%; a protective layer is formed to prevent the oxidation and skinning of the glue;

[0061] S2, start the oil temperature machine to pump hot oil into the oil inlet pipe 320, through the oil pipe 310 into several oil distribution pipe 311, and then recycle from the oil return pipe 330 to the oil temperature machine to heat and control the temperature, control the glue temperature at 40-50℃; the online viscometer dynamically adjusts the oil temperature according to the monitoring temperature of the temperature sensor, so that the viscosity is maintained at 2000±200cP;

[0062] S3, at the same time, start the stirring motor 110 to drive the stirring shaft 111 to rotate at low speed to stir the glue in the tank, form uniform rotation heating; form laminar shear at 50-60rpm to reduce the natural glue molecular chain breakage rate and improve the bonding strength to meet the drawing book folding resistance requirement;

[0063] S4, when the water content detected by the water sensor is lower than the set value or the predicted evaporation amount exceeds the standard, deionized water is atomized and injected into the tank through the feeding nozzle 102; double dry glue prevention mechanism is formed: physical isolation and water replenishment;

[0064] S5, after the glue is stirred, it is discharged from the discharge nozzle 120, then enters the incubator after UV sterilization and nanometer filtration to avoid secondary pollution of the glue before filtration.

[0065] It should be noted that the fixed connection and fixed terms of the present application are realized by conventional fixing means such as bolt connection or welding. The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An environmentally friendly glue preparation device for children's picture book production, comprising a mixing tank and a mixing motor mounted on its top, characterized in that: The mixing tank is equipped with a stirring section inside, which is coaxially connected to a stirring motor. The stirring section is equipped with a heat-conducting section inside, which is used to uniformly heat the glue in the tank for stirring. An oil temperature controller is installed on the outside of the mixing tank to supply hot oil to the heat-conducting section. The stirring section includes a heat insulation cylinder and several stirring tubes. The heat insulation cylinder is placed on the central axis of the stirring tank, and the several stirring tubes are symmetrically inserted into the outer wall of the heat insulation cylinder in two rows. The heat conducting section includes a pair of oil passage pipes, a pair of oil inlet pipes, a pair of oil return pipes, and an oil distribution sleeve. The two oil passage pipes are U-shaped and vertically arranged inside the heat insulation cylinder. Several U-shaped oil distribution pipes are vertically inserted into one side wall of the oil passage pipes. The oil distribution pipes are sleeved and fitted with the stirring tubes. The oil distribution sleeve is a hollow ring with an open inner wall and is positioned and sleeved with the top of the heat insulation cylinder. The inner wall of the oil distribution sleeve has a protrusion in the middle layer, which divides the interior into upper and lower oil storage chambers. The two ends of the oil pipe are staggered and inserted into the two oil storage chambers. A pair of oil inlet pipes and a pair of oil return pipes are staggered and inserted into the outer wall of the oil distribution sleeve, and are connected to the two oil storage chambers respectively. The pair of oil inlet pipes and the pair of oil return pipes are connected to the pump end and the return end of the oil temperature machine, respectively, thus forming a rotating heating channel inside the mixing tank to evenly heat the glue. The output end of the stirring motor is coaxially connected to the stirring shaft, which passes through the central shaft of the heat insulation cylinder and is tightly fitted at the bottom. The upper end of the heat insulation cylinder is connected to the stirring shaft by a sealing ring. The top sidewall of the heat insulation cylinder is provided with three equally spaced sealing grooves, and the inner sidewall of the oil distribution sleeve is bonded with a sealing ring, which is matched and fitted with the sealing grooves. Two pairs of openings are provided on one side wall of the heat insulation cylinder, located between the three sealing grooves. The upper end of the oil pipe is inserted into the upper opening, and the lower end of the oil pipe is inserted into the lower opening. Two pairs of oil inlets are provided on the outer side wall of the oil distribution sleeve, penetrating the oil storage cavity. The oil inlet pipe is inserted into the upper oil inlet, and the oil return pipe is inserted into the lower oil inlet. The oil passage pipe does not contact the heat insulation cylinder and the stirring shaft, and the interior of the heat insulation cylinder is a hollow structure to form a heat insulation cavity.

2. The environmentally friendly glue preparation device for children's picture book production according to claim 1, characterized in that: The outer wall of the heat insulation cylinder is symmetrically fitted with several sleeve heads, and one end of the stirring tube is tightly fitted with the sleeve head; the bottom surface of the stirring tube is vertically embedded with several stirring whiskers at equal intervals along the axis, the stirring whiskers are made of silicone material, and the other end of the stirring tube is fitted with a wall scraper, and a spring is provided between the wall scraper and the stirring tube.

3. The environmentally friendly glue preparation device for children's picture book production according to claim 2, characterized in that: The top surface of the mixing tank is equipped with a moisture sensor and a temperature sensor to monitor the internal moisture evaporation and temperature. The top surface of the mixing tube is equipped with an online viscometer to monitor the viscosity of the adhesive. The online viscometer consists of a wireless module, a viscosity sensor, and a battery module.

4. The environmentally friendly glue preparation device for children's picture book production according to claim 3, characterized in that: The bottom of the mixing tank is fixedly connected to a base, and a discharge nozzle is installed on the side wall of the base. The top side wall of the mixing tank is provided with a filling nozzle for replenishing water and nitrogen. The bottom of the mixing tank is funnel-shaped and connected to the discharge nozzle through a bent pipe. The bottom end of the mixing shaft is annularly fitted with several guide scrapers at equal intervals. The guide scrapers are triangular plates and their hypotenuses are slidably connected to the arc surface of the bottom of the mixing tank.

5. An environmentally friendly adhesive preparation process for children's picture book production, using the environmentally friendly adhesive preparation apparatus for children's picture book production as described in claim 4, characterized in that... Includes the following steps: S1. Pour nitrogen gas into the mixing tank until the oxygen concentration is ≤0.5%; S2. Start the oil temperature controller and pump hot oil into the oil inlet pipe. The hot oil is then distributed into several branch oil pipes through the oil passage pipe and then circulated back to the oil temperature controller from the oil return pipe to heat and control the temperature of the adhesive at 40-50℃. S3. Simultaneously start the stirring motor to drive the stirring shaft and drive several stirring tubes to rotate at low speed to stir the glue in the tank, forming a uniform rotating heating; S4. When the moisture sensor detects that the moisture content is lower than the set value or the predicted evaporation exceeds the standard, deionized water is injected into the tank through the injection nozzle. S5. After the glue is well mixed, it is discharged from the discharge nozzle, and then enters the heat preservation box after UV sterilization and nano-filtration.

6. The environmentally friendly adhesive preparation process for children's picture book production according to claim 5, characterized in that: The online viscometer in S2 dynamically adjusts the oil temperature based on the temperature monitored by the temperature sensor, so that the viscosity is maintained at 2000±200 cP.

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