A waste paper making equipment recycling waste heat

Abstract

The utility model provides a kind of waste paper papermaking equipment of recycling waste heat, it is characterized by including support structure, waste paper crushing structure, pulping forming structure, drying recovery structure, the upper portion of support structure is provided with pulping forming structure, drying recovery structure, the support structure is connected with pulping forming structure, drying recovery structure by bolt, nut, the upper portion of pulping forming structure is provided with waste paper crushing structure, the pulping forming structure is connected by the mode of welding with waste paper crushing structure, the side of pulping forming structure is provided with drying recovery structure, the utility model improves support structure, support platform provides installation platform for pulping forming structure, drying recovery structure etc in upper portion, by being provided with recess in support platform upper portion, the positioning installation of pulping pool etc component is convenient, improves the convenience and accuracy of each structure installation, can also play certain limiting effect to pulping pool etc, prevent its from deviating in working process.

Description

Technical Field

[0001] This utility model relates to the technical field of waste paper making equipment, and in particular to a waste paper making equipment that recovers and utilizes waste heat. Background Technology

[0002] Waste paper making equipment is a complete mechanical system that recycles waste paper into new paper. Its core includes three types of equipment: pretreatment, pulping, and forming, which sequentially complete the entire process of waste paper impurity removal, pulping optimization, and pulp drying and forming.

[0003] Waste paper recycling equipment is designed with energy conservation, environmental protection, and cost reduction as its core objectives. Traditional equipment requires a large amount of heat energy in the drying section. This design recovers the heat from the high-temperature exhaust gas and wastewater emitted during the drying process and reuses it for preheating raw materials or auxiliary heating. This reduces reliance on fossil fuels to lower energy consumption, reduces carbon emissions to achieve environmental protection, and also lowers fuel procurement costs for enterprises, thereby improving production economics.

[0004] Existing patent number CN215481941U discloses a waste paper making equipment that recovers and utilizes waste heat for the production of corrugated core paper, corrugated paper, and kraft paper. It includes a water vapor separation device for separating water vapor and a hot air supply device. The pressing and dewatering device is set in the heat-insulated and sealed chamber of the pressing section. This utility model isolates and seals the pressing and dewatering device, then extracts the water vapor generated by the pressing and dewatering device through the first water vapor extraction port, and then recovers and utilizes the heat of the water vapor dissipated into the workshop during the dewatering process through the water vapor separation device. This makes reasonable use of waste heat, reduces environmental pollution, reduces energy consumption, and makes the production process more energy-efficient and environmentally friendly.

[0005] Problems identified in existing technologies: Existing equipment mainly focuses on the heat from water vapor in the pressing and dehydration process, and does not fully recover the heat from the high-temperature exhaust gas and wastewater generated in the drying process. The waste heat utilization pathways are relatively simple, mostly used only for simple preheating, and have not formed a multi-stage cascade utilization system. Utility Model Content

[0006] To address the above technical problems, this utility model provides a waste paper making equipment that recovers and utilizes waste heat. The equipment includes a support structure, a waste paper crushing structure, a pulping and forming structure, and a drying and recycling structure. The pulping and forming structure and the drying and recycling structure are located above the support structure. The support structure is connected to the pulping and forming structure and the drying and recycling structure via bolts and nuts. The waste paper crushing structure is located above the pulping and forming structure. The pulping and forming structure is connected to the waste paper crushing structure by welding. The drying and recycling structure is located on one side of the pulping and forming structure.

[0007] The support structure consists of fixed legs and a support platform. The fixed legs are located below the support platform and are connected to the support platform by bolts and nuts. A groove is formed on the top of the support platform.

[0008] The waste paper shredding structure consists of a shredding barrel, a feed hopper, a sealing cover, a motor A, shredding blades, and a discharge end. The feed hopper is located above the shredding barrel and is connected to it by welding. A sealing cover is located above the feed hopper and is connected to it by threads. Motor A is located inside the shredding barrel, and its output end passes through the inner wall of the shredding barrel and connects to the shredding blades. The discharge end is located at the bottom of the shredding barrel and is connected to it by welding. A valve is installed at the discharge end. Motor A is mounted on the inner wall of the shredding barrel.

[0009] The pulping and forming structure consists of a pulping chamber, a pulp filter screen, a pulping tank, and a forming screen. A pulp filter screen is installed on one side of the pulping chamber, and the pulping chamber and the pulp filter screen are connected by bolts and nuts. The pulping tank is located in a groove in the support platform, and the forming screen is installed above the pulping tank. The top of the pulping chamber has an inlet and a water injection end, which are connected to the outlet end of the waste paper crushing structure. The crushed waste paper enters the pulping chamber through the inlet. A stirring shaft is installed inside the pulping chamber. One end of the stirring shaft penetrates the side wall of the pulping chamber and is connected to the output end of motor B through a sealed bearing to prevent material leakage. Motor B is fixed to the outer wall of the pulping chamber with bolts, and its stability is enhanced by reinforcing ribs, allowing it to drive the stirring shaft to rotate at high speed, ensuring thorough mixing of waste paper and water to form pulp.

[0010] The drying and recovery structure consists of a drying chamber, a fan, a connecting plate, a heat exchanger, a waste heat recovery pipe, a telescopic cylinder, and a pressing plate. The drying chamber is mounted on a support platform. The fan is installed inside the drying chamber and is fixed to the top of the inner wall of the drying chamber by bolts and nuts. A connecting plate is installed on the outside of the drying chamber and is welded to the drying chamber. A heat exchanger is installed on the connecting plate. The input end of the heat exchanger is connected to the inside of the drying chamber through a pipe, and the output end of the heat exchanger is connected to the waste heat recovery pipe. The other end of the waste heat recovery pipe is connected to the pressing plate. A telescopic cylinder is installed below the connecting plate, and the telescopic end of the telescopic cylinder is connected to the pressing plate. The pressing plate is positioned above the forming mesh. The top of the drying chamber has an exhaust port, which is connected to the input end of the heat exchanger via a pipe. The pressing plate has an internal hollow structure with several heat-conducting fins inside. The heat-conducting fins are welded and fixed to the inner wall of the pressing plate. The other end of the waste heat recovery pipe is connected to the hollow cavity of the pressing plate, so that the waste heat recovered by the heat exchanger can be introduced into the interior of the pressing plate through the waste heat recovery pipe. The bottom of the pressing plate has several vent holes, which are connected to the hollow cavity of the pressing plate. The bottom surface of the pressing plate is covered with a layer of high-temperature resistant silicone pad, which is glued and fixed to the pressing plate with high-temperature resistant adhesive.

[0011] The beneficial effects of this utility model are as follows: This utility model improves the support structure, which consists of fixed legs and a support platform. The fixed legs provide a stable support foundation for the entire equipment, enhancing its stability during operation, reducing displacement or shaking caused by equipment vibration, and ensuring the reliability of the connection between various structures. The support platform provides an installation platform for the pulping and forming structure, drying and recycling structure, etc., above. By opening grooves on the support platform, it is easy to position and install components such as the pulping tank, improving the convenience and accuracy of the installation of various structures. At the same time, it can also play a certain limiting role for the pulping tank, preventing it from shifting during operation.

[0012] This utility model improves the waste paper crushing structure, which consists of a crushing barrel, a feeding hopper, a sealing cover, a motor A, crushing blades, and a discharge end. The motor A directly drives the crushing blades to rotate at high speed inside the crushing barrel, which can fully cut and crush the input waste paper, breaking it down into smaller fragments. This facilitates the thorough mixing of waste paper and water in the subsequent pulping process, improving pulping efficiency and quality. The feeding hopper is designed to facilitate the input of waste paper and is welded and fixed to the crushing barrel for a firm connection. The sealing cover is connected to the feeding hopper by threads, which can prevent shredded paper or dust from splashing during the crushing process, ensuring a clean operating environment, and can also be easily opened and closed for adding materials.

[0013] This invention improves the pulping and forming structure, which consists of a pulping chamber, a pulp filter screen, a pulping tank, and a forming screen. The feed inlet at the top of the pulping chamber is connected to the discharge end of the waste paper crushing structure, ensuring that the crushed waste paper can directly enter the pulping chamber. The stirring shaft inside the chamber rotates under the drive of motor B, which can fully mix and stir the waste paper and water to quickly form a uniform pulp, laying a good foundation for subsequent forming and improving pulping efficiency. The pulp filter screen set on one side of the pulping chamber can filter the pulp formed by stirring, removing impurities or large fibers that are not fully crushed, ensuring the purity of the pulp entering the pulping tank, reducing defects in the subsequent formed paper, and improving the quality of the finished paper. The pulping tank is set in the groove of the support platform and can receive the filtered pulp. The forming screen above it serves as a carrier for paper forming, enabling the pulp to be evenly distributed and initially dehydrated and formed, providing a stable wet paper blank for subsequent pressing and drying processes, ensuring that the forming process proceeds in an orderly manner.

[0014] This invention improves the drying and recovery structure, comprising a drying chamber, a fan, a connecting plate, a heat exchanger, a waste heat recovery pipe, a telescopic cylinder, and a press plate. The exhaust port at the top of the drying chamber is connected to the heat exchanger via a pipe, allowing the high-temperature waste gas generated during the drying process to be introduced into the heat exchanger for heat recovery. The heat is then transported to the inside of the press plate through the waste heat recovery pipe. The hollow structure of the press plate, combined with heat-conducting fins, can quickly conduct the recovered heat and evenly apply it to the wet paper blank on the forming wire, achieving secondary utilization of waste heat and reducing energy consumption. The telescopic cylinder drives the press plate to press the wet paper blank on the forming wire, physically squeezing out a large amount of moisture first, reducing the workload of the subsequent drying chamber. The press plate utilizes the recovered waste heat to preheat and dry the wet paper blank simultaneously, forming a synergistic effect with the airflow drying from the fan inside the drying chamber, accelerating moisture evaporation, improving overall drying efficiency and effect, and shortening the production cycle. The high-temperature resistant silicone pad at the bottom of the press plate enhances the pressing seal, preventing paper blank damage, and can withstand the temperature of the recovered waste heat, extending the service life of the components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a waste paper making equipment that recycles waste heat according to this utility model. Figure 2 This is a front view of a waste paper making device that recycles waste heat according to the present invention. Figure 3 This is a top view of a waste paper making device that recycles waste heat according to this utility model. Figure 4 This is a partial schematic diagram of a waste paper making device that recycles waste heat according to this utility model; Figure 5 This is a schematic diagram of the inside of the crushing drum of a waste paper making equipment that recycles waste heat according to this utility model. Figure 6 This is a schematic diagram of the pulping chamber of a waste paper making equipment that recycles waste heat, according to this utility model. Figure 7 This is a schematic diagram of the drying chamber inside a waste paper making equipment that recycles waste heat, according to this utility model.

[0016] As shown in the figure: 1-Fixed support leg; 2-Support platform; 3-Pulping chamber; 4-Pulp filter screen; 5-Pulping tank; 6-Forming screen; 7-Crushing bucket; 8-Feed hopper; 9-Sealing cover; 10-Motor A; 11-Crushing blade; 12-Discharge end; 13-Drying box; 14-Fan; 15-Connecting plate; 16-Heat exchanger; 17-Waste heat recovery pipe; 18-Telescopic cylinder; 19-Pressing plate; 20-Motor B; 21-Agitator shaft. Detailed Implementation Example 1

[0017] This utility model provides a waste paper making equipment that recovers and utilizes waste heat. Its features include a support structure consisting of fixed legs 1 and a support platform 2; a waste paper crushing structure consisting of a crushing bucket 7, a feeding hopper 8, a sealing cover 9, a motor A10, crushing blades 11, and a discharge end 12; a pulping and forming structure consisting of a pulping chamber 3, a pulp filter screen 4, a pulping tank 5, and a forming screen 6; and a drying and recovery structure consisting of a drying box 13, a fan 14, a connecting plate 15, a heat exchanger 16, a waste heat recovery pipeline 17, a telescopic cylinder 18, and a press plate 19. Fixed support 1 is located below support platform 2 and is connected to support platform 2 by bolts and nuts. A feed hopper 8 is located above crushing barrel 7 and is connected to crushing barrel 7 by welding. A sealing cover 9 is located above feed hopper 8 and is connected to sealing cover 9 by threads. A motor A10 is located inside crushing barrel 7, and the output end of motor A10 passes through the inner wall of crushing barrel 7 and connects to crushing blade 11. A discharge end 12 is located at the bottom of crushing barrel 7 and is connected to discharge end 12 by welding. A pulping filter screen is located on one side of pulping chamber 3 and is connected to pulp filter screen 4 by bolts and nuts. Pulping tank 5 is located in the groove of support platform 2, and a forming screen 6 is located above pulping tank 5. The drying chamber 13 is mounted on the support platform 2. A fan 14 is installed inside the drying chamber 13 and is fixed to the top of the inner wall of the drying chamber 13 by bolts and nuts. A connecting plate 15 is installed on the outside of the drying chamber 13 and is welded to the drying chamber 13. A heat exchanger 16 is installed on the connecting plate 15. The input end of the heat exchanger 16 is connected to the inside of the drying chamber 13 through a pipe. The output end of the heat exchanger 16 is connected to a waste heat recovery pipe 17. The other end of the waste heat recovery pipe 17 is connected to a pressing plate 19. A telescopic cylinder 18 is installed below the connecting plate 15. The telescopic end of the telescopic cylinder 18 is connected to the pressing plate 19. The pressing plate 19 is positioned above the forming mesh 6. Example 2

[0018] When using this utility model, first check whether the connections of each structure are firm, ensure that the bolts of the fixed support 1 and the support platform 2 are not loose, and that the sealing cover 9 and the feed hopper 8 are tightly screwed together. Open the sealing cover 9 and put the waste paper to be processed into the crushing barrel 7 from the feed hopper 8. After closing the sealing cover 9, start the motor A10. The motor A10 drives the crushing blade 11 to rotate at high speed to crush the waste paper. After crushing, open the valve of the discharge end 12. The crushed waste paper fragments enter the feed port at the top of the pulping chamber 3 through the discharge end 12.

[0019] Add an appropriate amount of clean water to the pulping chamber 3, start the motor B20, and the motor B20 drives the stirring shaft 21 to rotate, so that the waste paper fragments and water are fully mixed and stirred to form pulp. After the pulp is filtered through the pulp filter screen 4 on one side of the pulping chamber 3 to remove impurities, it flows into the pulping tank 5 in the groove of the support platform 2 below. The pulp in the pulping tank 5 is guided to the forming screen 6, where it is initially dewatered to form a wet paper blank.

[0020] Subsequently, the telescopic cylinder 18 is activated, which drives the press plate 19 to descend and press the wet paper blank on the forming wire 6, squeezing out some water. The staff then transfers the wet paper blank into the drying chamber 13, which begins to operate. The fan 14 runs to generate airflow to dry the wet paper blank. The high-temperature exhaust gas generated during the drying process enters the heat exchanger 16 through the exhaust port at the top of the drying chamber 13. The heat exchanger 16 recovers the heat from the exhaust gas and introduces the heat into the hollow cavity of the press plate 19 through the waste heat recovery pipe 17. The heat is conducted through the heat-conducting fins and acts on the wet paper blank through the vent holes, achieving waste heat preheating.

[0021] Throughout the process, waste heat is fully utilized, reducing energy consumption and accelerating drying efficiency through the synergistic effect of pressing and preheating, ultimately completing the recycling process from waste paper to paper blank. After use, all motors and equipment are turned off, and components such as the crushing bin 7 and pulping chamber 3 are cleaned to ensure smooth operation next time.

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

Claims

1. A waste paper papermaking device that recovers and utilizes waste heat, characterized in that... It includes a support structure, a waste paper crushing structure, a pulping and forming structure, and a drying and recycling structure. The pulping and forming structure and the drying and recycling structure are arranged above the support structure. The waste paper crushing structure is arranged above the pulping and forming structure. The drying and recycling structure is arranged on one side of the pulping and forming structure.

2. The waste paper papermaking equipment for recovering and utilizing waste heat according to claim 1, characterized in that, The support structure consists of fixed legs and a support platform. The fixed legs are located below the support platform and are connected to the support platform by bolts and nuts.

3. The waste paper papermaking equipment for recovering and utilizing waste heat according to claim 1, characterized in that, The waste paper crushing structure consists of a crushing barrel, a feed hopper, a sealing cover, a motor A, crushing blades, and a discharge end. The feed hopper is located above the crushing barrel and is connected to the crushing barrel by welding. The sealing cover is located above the feed hopper and is connected to the feed hopper by threads. The motor A is located inside the crushing barrel, and the output end of the motor A passes through the inner wall of the crushing barrel and is connected to the crushing blades. The discharge end is located at the bottom of the crushing barrel and is connected to the crushing barrel by welding.

4. The waste paper papermaking equipment for recovering and utilizing waste heat according to claim 1, characterized in that, The pulping and forming structure consists of a pulping chamber, a pulp filter screen, a pulping tank, and a forming screen. A pulp filter screen is provided on one side of the pulping chamber, and the pulping chamber and the pulp filter screen are connected by bolts and nuts. The pulping tank is set in the groove of the support platform, and a forming screen is provided above the pulping tank.

5. The waste paper papermaking equipment for recovering and utilizing waste heat according to claim 4, characterized in that, The drying and recovery structure consists of a drying chamber, a fan, a connecting plate, a heat exchanger, a waste heat recovery pipe, a telescopic cylinder, and a pressing plate. The drying chamber is mounted on a support platform. The fan is installed inside the drying chamber and is fixed to the top of the inner wall of the drying chamber by bolts and nuts. A connecting plate is installed on the outside of the drying chamber and is welded to the drying chamber. A heat exchanger is installed on the connecting plate. The input end of the heat exchanger is connected to the inside of the drying chamber through a pipe, and the output end of the heat exchanger is connected to the waste heat recovery pipe. The other end of the waste heat recovery pipe is connected to the pressing plate. A telescopic cylinder is installed below the connecting plate, and the telescopic end of the telescopic cylinder is connected to the pressing plate. The pressing plate is positioned above the forming mesh.

6. The waste paper papermaking equipment for recovering and utilizing waste heat according to claim 1, characterized in that, The supporting structure is connected to the pulping and forming structure and the drying and recycling structure by bolts and nuts, and the pulping and forming structure is connected to the waste paper crushing structure by welding.

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