Paper-plastic wet compression molding waste heat recovery drying device

Abstract

The utility model belongs to paper plastic product production equipment technical field especially for paper plastic wet compression forming waste heat recovery drying device, including the forming machine frame, the lower mould seat of setting on the forming machine frame and with the upper mould seat of corresponding setting of lower mould seat, one side fixed connection of forming machine frame has the mounting bracket, and installs the cylinder on the mounting bracket, lower extreme of cylinder output shaft is fixedly connected with the upper mould seat for driving the upper mould seat up and down movement to realize wet compression forming. The utility model discloses through setting up steam recovery subassembly, and steam recovery subassembly can recycle the steam of paper plastic wet compression forming machine work, avoids the waste of waste heat, and through setting up cyclone separator and metal wire screen demister, and cyclone separator and metal wire screen demister can carry out dry processing to steam, remove the moisture in steam, and then it is convenient for subsequent direct utilization, solves the problem that the equipment lacks waste heat recovery drying device at present stage.

Description

Technical Field

[0001] This utility model relates to the technical field of paper and plastic product manufacturing equipment, specifically a waste heat recovery and drying device for paper and plastic wet pressing molding. Background Technology

[0002] In the traditional paper-plastic wet pressing process, when the upper and lower molds of the molding machine close to wet press the paper-plastic raw material, the moisture in the raw material evaporates upon heating, forming a large amount of steam. This steam is usually directly released into the air, and the large amount of waste heat contained within it is also lost. On the one hand, this direct release method leads to serious energy waste, which is inconsistent with the current trend of energy conservation and emission reduction in industrial production. On the other hand, the released steam may increase the humidity in the production workshop, affecting the stability of the production environment, and may even have an adverse impact on the normal operation of production equipment and the subsequent processing quality of paper-plastic products.

[0003] Currently, while some paper and plastic manufacturing companies are aware of the problem of waste heat and have attempted to use simple recovery devices for treatment, existing recovery devices generally suffer from low steam recovery efficiency, incomplete gas-liquid separation, and poor demisting effects. For example, some recovery devices collect steam through only a single pipe, failing to fully cover the molding area and causing a large amount of steam to escape; some gas-liquid separation devices still contain a significant amount of moisture in the separated gas, which, if used directly for drying, will affect the drying effect; and demisting devices are ineffective at removing tiny mist droplets from the gas, which may carry impurities and contaminate subsequent equipment or products. Therefore, there is an urgent need for a waste heat recovery drying device that can efficiently recover steam, thoroughly achieve gas-liquid separation, and effectively demistate, in order to solve the aforementioned problems existing in the current technology. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waste heat recovery and drying device for paper-plastic wet pressing. This device can comprehensively collect the steam generated during the molding process, efficiently achieve gas-liquid separation and demisting, and fully recover and utilize the waste heat in the steam for the drying process of paper-plastic products. This not only solves the problem of energy waste but also improves the stability of the production environment and the processing quality of paper-plastic products.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A waste heat recovery and drying device for paper-plastic wet pressing molding includes a molding machine frame, a lower mold base mounted on the molding machine frame, and an upper mold base corresponding to the lower mold base. A mounting frame is fixedly connected to one side of the molding machine frame, and a cylinder is mounted on the mounting frame. The lower end of the cylinder output shaft is fixedly connected to the upper mold base for driving the upper mold base to move up and down to achieve wet pressing molding. It also includes a steam recovery component for recovering steam generated during the molding process, a cyclone separator for gas-liquid separation of steam, a heat-insulating pipe for conveying steam, and a metal wire mesh demister for demisting steam. The steam recovery component is mounted on the molding machine frame and communicates with the cyclone separator. The heat-insulating pipe is connected between the outlet of the cyclone separator and the inlet of the metal wire mesh demister.

[0009] Furthermore, the steam recovery assembly includes a support, a steam recovery pipe, a branch pipe, a collection hood, a hose, a gas delivery pipe, and a high-temperature resistant gas pump. The support is fixed on the molding machine frame, the steam recovery pipe is installed on the support, one end of the branch pipe is connected to the steam recovery pipe, and the other end is connected to the collection hood. The collection hood is set corresponding to the molding areas of the lower mold base and the upper mold base. The steam recovery pipe is connected to one end of the gas delivery pipe through the hose, and the other end of the gas delivery pipe is connected to the air inlet of the cyclone separator. The high-temperature resistant gas pump is connected in series with the gas delivery pipe to provide power for steam delivery.

[0010] Furthermore, the metal wire mesh demister includes a housing, and a first baffle layer, a second baffle layer, a third baffle layer, and a metal wire mesh filling layer arranged sequentially from bottom to top inside the housing. The metal wire mesh filling layer is filled with metal wire mesh bodies. The first baffle layer, the second baffle layer, and the third baffle layer are all composed of several baffle bodies arranged in parallel intervals, and the baffle bodies of adjacent baffle layers are arranged in an alternating manner. An exhaust hood is fixedly connected to the top of the housing, and an exhaust pipe is connected to the exhaust hood.

[0011] Furthermore, the distance between the third baffle plate layer and the metal mesh filling layer is 100-200mm.

[0012] Furthermore, the tilt angle of the baffle plate body is 15°-30°; and the surface of the baffle plate body is provided with a corrosion-resistant coating, the metal wire mesh body is a stainless steel woven mesh, and the mesh count of the metal wire mesh body is 80-120 mesh.

[0013] Furthermore, the baffle plate body is provided with equidistantly distributed through holes with a diameter of 10-15mm. The through holes allow some low-speed steam to pass through, avoiding excessive airflow impact during intermittent air intake, which could cause the baffle plate body to vibrate or liquid to splash. The spacing between adjacent baffle plate layers decreases sequentially from the gas inlet area to the outlet area.

[0014] Furthermore, a water collection area is formed on the inner bottom of the shell, and a water outlet pipe is connected to one side of the shell corresponding to the water collection area, with a valve installed on the water outlet pipe.

[0015] Furthermore, a bracket is fixedly connected to the outer wall of the cyclone separator, and the waste heat recovery and drying device for paper-plastic wet pressing also includes a water collection box, which is correspondingly arranged below the cyclone separator.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a waste heat recovery and drying device for paper-plastic wet pressing, which has the following beneficial effects:

[0018] 1. This utility model comprehensively collects the steam generated during the wet pressing of paper and plastic through a steam recovery component. Then, a cyclone separator and a metal wire mesh demister are used to separate the steam into liquid and remove mist. The separated dry gas carries a large amount of waste heat and can be directly used in the drying process of paper and plastic products. This achieves efficient recovery and utilization of waste heat, reduces energy waste, and lowers the production energy consumption and costs of enterprises. In this utility model, the cyclone separator can perform preliminary gas-liquid separation of steam and remove most of the liquid moisture. The three layers of staggered baffles in the metal wire mesh demister can perform preliminary demisting of the gas, and the metal wire mesh filling layer can further capture tiny mist droplets. Through dual treatment, it is ensured that the discharged gas is dry and clean, avoiding the impact of moisture and impurities on subsequent drying processes and product quality.

[0019] 2. In this utility model, multiple branch pipes and collection hoods in the steam recovery component are set in corresponding forming areas, which can fully cover the steam generation area and effectively reduce steam escape; at the same time, the high-temperature resistant air pump provides sufficient power for steam transportation, ensuring that the steam can quickly and smoothly enter the subsequent processing equipment, significantly improving the steam recovery efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the steam recovery component in this utility model;

[0022] Figure 3 This is a three-dimensional cross-sectional view of the metal wire mesh demister in this utility model.

[0023] In the diagram: 1. Molding machine frame; 2. Lower mold base; 3. Upper mold base; 4. Mounting bracket; 5. Cylinder; 6. Steam recovery assembly; 601. Support; 602. Steam recovery pipe; 603. Branch pipe; 604. Collection hood; 605. Hose; 606. Gas delivery pipe; 607. High-temperature resistant air pump; 7. Cyclone separator; 8. Insulation pipe; 9. Metal wire mesh demister; 901. Shell; 902. First baffle layer; 903. Second baffle layer; 904. Third baffle layer; 905. Metal wire mesh filling layer; 906. Exhaust hood; 907. Air outlet pipe; 908. Metal wire mesh body; 909. Baffle body; 9010. Water outlet pipe; 10. Bracket; 11. Water collection box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figure 1 As shown, an embodiment of the present invention provides a waste heat recovery and drying device for paper-plastic wet pressing molding, including a molding machine frame 1, a lower mold base 2 disposed on the molding machine frame 1, and an upper mold base 3 disposed corresponding to the lower mold base 2. A mounting frame 4 is fixedly connected to one side of the molding machine frame 1, and a cylinder 5 is mounted on the mounting frame 4. The lower end of the output shaft of the cylinder 5 is fixedly connected to the upper mold base 3 for driving the upper mold base 3 to move up and down to achieve wet pressing molding. It also includes a steam recovery component 6 for recovering steam generated during the molding process, a cyclone separator 7 for gas-liquid separation of steam, a heat-insulating pipe 8 for conveying steam, and a metal wire mesh demister 9 for demisting steam. The steam recovery component 6 is installed on the molding machine frame 1 and communicates with the cyclone separator 7. The heat-insulating pipe 8 is connected between the outlet of the cyclone separator 7 and the inlet of the metal wire mesh demister 9.

[0027] It should be noted that the cylinder 5 drives the upper mold base 3 to move downwards and close with the lower mold base 2 on the molding machine frame 1 to wet press the paper-plastic raw material. During the molding process, the steam generated by the heating and evaporation of the raw material is fully captured by the steam recovery component 6 and transported to the cyclone separator 7. The cyclone separator 7 separates most of the liquid water in the steam through centrifugal force. The steam after preliminary drying is transported to the metal wire mesh demister 9 through the heat insulation pipe 8 (to reduce waste heat loss). The metal wire mesh demister 9 further removes the tiny mist droplets in the steam through the synergistic action of multiple baffles and metal wire mesh, finally obtaining dry gas that carries waste heat. This gas can be directly connected to the paper-plastic product drying process to realize waste heat recovery and utilization. At the same time, the separated liquid water is collected and treated through the water collection box 11 below the cyclone separator 7 and the water outlet pipe 9010 of the metal wire mesh demister 9.

[0028] like Figure 1 and Figure 2 As shown, in some embodiments, the steam recovery assembly 6 includes a support 601, a steam recovery pipe 602, a branch pipe 603, a collection hood 604, a hose 605, a gas delivery pipe 606, and a high-temperature resistant gas pump 607. The support 601 is fixed on the molding machine frame 1, the steam recovery pipe 602 is installed on the support 601, one end of the branch pipe 603 is connected to the steam recovery pipe 602, and the other end is connected to the collection hood 604. The collection hood 604 is set corresponding to the molding areas of the lower mold base 2 and the upper mold base 3. The steam recovery pipe 602 is connected to one end of the gas delivery pipe 606 through the hose 605, and the other end of the gas delivery pipe 606 is connected to the air inlet of the cyclone separator 7. The high-temperature resistant gas pump 607 is connected in series with the gas delivery pipe 606 to provide power for steam delivery.

[0029] It should be noted that the support 601 provides fixed support for the steam recovery pipe 602 to ensure the stability of the pipeline. Multiple branch pipes 603 connected to the steam recovery pipe 602 are respectively connected to the collection hoods 604 of the forming areas of the lower mold base 2 and the upper mold base 3, forming a complete coverage of the steam generation area to prevent steam escape. When steam is generated during forming, the high-temperature resistant air pump 607 is started, forming a negative pressure in the air delivery pipeline 606, which draws the steam captured by the collection hood 604 into the branch pipes 603 and the steam recovery pipe 602 in sequence, and then transports it to the air delivery pipeline 606 through the hose 605 (adapted to the displacement of the equipment during operation to avoid pipeline damage), and finally into the cyclone separator 7 to complete the collection and transportation of steam.

[0030] like Figure 3As shown, in some embodiments, the metal wire mesh demister 9 includes a housing 901, and a first baffle layer 902, a second baffle layer 903, a third baffle layer 904, and a metal wire mesh filling layer 905 arranged sequentially from bottom to top inside the housing 901. The metal wire mesh filling layer 905 is filled with a metal wire mesh body 908. The first baffle layer 902, the second baffle layer 903, and the third baffle layer 904 are all composed of a plurality of parallel baffle bodies 909, and the baffle bodies 909 of adjacent baffle layers are staggered. An exhaust hood 906 is fixedly connected to the top of the housing 901, and an exhaust pipe 907 is connected to the exhaust hood 906.

[0031] It should be noted that the mist-laden steam enters from the bottom of the shell 901 and first flows through the first baffle layer 902. The steam changes its flow direction due to the obstruction of the parallel baffle bodies 909. The mist droplets collide with the baffles due to inertia and condense, completing the initial demisting. Subsequently, the steam enters the second baffle layer 903 and the third baffle layer 904. Due to the staggered arrangement of the baffle bodies 909 of adjacent baffle layers, the steam flow path becomes more complex, and the mist droplets are intercepted and separated multiple times. After being processed by the three baffles, the steam finally enters the metal wire mesh filling layer 905. The metal wire mesh body 908 forms a dense interception network to capture the remaining tiny mist droplets. The purified dry gas flows upward, converges through the exhaust hood 906, and is discharged from the exhaust pipe 907 for subsequent waste heat utilization.

[0032] like Figure 3 As shown, in some embodiments, the distance between the third baffle layer 904 and the wire mesh filling layer 905 is 100-200 mm.

[0033] It should be noted that setting the distance between the third baffle layer 904 and the metal mesh filling layer 905 to 100-200mm is to balance "airflow stability" and "demisting efficiency". If the distance is too small, the steam that has undergone preliminary demisting by the third baffle layer 904 may directly impact the metal mesh filling layer 905 due to insufficient airflow diffusion, resulting in excessively high local droplet concentration and affecting the interception effect of the metal mesh. If the distance is too large, droplets may re-aggregate during the steam flow, reducing the demisting efficiency. A distance of 100-200mm allows for uniform airflow distribution before the steam enters the metal mesh filling layer 905, while avoiding secondary droplet aggregation, ensuring that the metal mesh filling layer 905 can efficiently capture tiny droplets.

[0034] like Figure 3 As shown, in some embodiments, the tilt angle of the baffle body 909 is 15°-30°; and the surface of the baffle body 909 is provided with a corrosion-resistant coating, the metal wire mesh body 908 is a stainless steel woven mesh, and the mesh count of the metal wire mesh body 908 is 80-120 mesh.

[0035] It should be noted that the 15°-30° tilt angle allows the steam to form a reasonable flow velocity on the baffle plate surface, ensuring sufficient impact and condensation of droplets while avoiding excessive airflow resistance. At the same time, the steam may contain trace amounts of corrosive components from residual paper and plastic raw materials, which can cause corrosion of the baffle plate body 909 over a long period of time, affecting the equipment's lifespan and demisting effect. The corrosion-resistant coating can isolate the steam from direct contact with the baffle plate body 909, preventing corrosion and ensuring the long-term stable operation of the baffle plate. The 80-120 mesh design can form dense interception pores, which can effectively capture small droplets without causing excessive airflow resistance due to excessively small pores, ensuring the smooth discharge of dry gas.

[0036] like Figure 3 As shown, in some embodiments, the baffle body 909 is provided with equidistant through holes with a diameter of 10-15mm. The through holes allow some low-speed steam to pass through, avoiding excessive airflow impact during intermittent air intake, which could cause the baffle body 909 to vibrate or cause liquid splashing. The spacing between adjacent baffle layers decreases sequentially from the gas inlet region to the outlet region.

[0037] It should be noted that in intermittent air intake scenarios (such as the gap between the mold opening and closing of the molding machine, where the amount of steam generated fluctuates), the airflow is prone to instantaneous impact. The through holes allow some low-speed steam to pass directly, alleviating the impact of the instantaneous airflow on the baffle plate body 909, avoiding baffle plate vibration, and preventing the condensed liquid on the surface of the baffle plate from splashing due to airflow impact and re-mixing into the steam, ensuring a stable initial demisting effect. The baffle plate layer spacing decreases (from the gas inlet area to the outlet area). When the steam enters from the inlet area, the mist droplet concentration is high and the particles are large. The larger spacing can accommodate more steam, reduce airflow congestion, and allow large mist droplets to fully condense in the first baffle plate layer 902. As the steam flows towards the outlet area, the mist droplet concentration decreases and the particles become smaller. The gradually decreasing spacing can slightly increase the airflow velocity, enhance the collision probability between the mist droplets and the baffle plate, improve the capture efficiency of small mist droplets, and achieve a gradient purification effect of "coarse removal first, then fine removal".

[0038] like Figure 3 As shown, in some embodiments, a water collection area is formed on the inner bottom of the housing 901, and a water outlet pipe 9010 is connected to one side of the housing 901 corresponding to the water collection area, and a valve is installed on the water outlet pipe 9010.

[0039] It should be noted that after the steam undergoes multiple layers of treatment in the metal wire mesh demister 9, the mist droplets condense on the surfaces of the baffle plate body 909 and the metal wire mesh body 908, and drip downwards under the action of gravity, eventually converging into the water collection area at the bottom of the inner side of the shell 901. When the water in the water collection area reaches a certain amount, the valve on the water outlet pipe 9010 is opened, and the accumulated water can be discharged from the equipment through the water outlet pipe 9010, thus preventing the water from accumulating inside the shell 901.

[0040] like Figure 1 As shown, in some embodiments, a bracket 10 is fixedly connected to the outer wall of the cyclone separator 7, and the waste heat recovery and drying device for paper-plastic wet pressing also includes a water collection box 11, which is correspondingly arranged below the cyclone separator 7.

[0041] It should be noted that the cyclone separator 7 must maintain a stable vertical position during operation in order to efficiently separate gas and liquid through centrifugal force. The support 10 is fixed to the outer wall of the cyclone separator 7 to provide support and ensure stable centrifugal separation effect. The cyclone separator 7 uses centrifugal force to throw the liquid water in the steam towards the wall of the separator. The water flows down the wall and is finally discharged from the bottom of the cyclone separator 7. The water collection box 11 is set below the cyclone separator 7 to directly collect the discharged liquid water and prevent water from dripping and polluting the production environment or damaging the equipment.

[0042] The working principle and usage steps of this utility model are as follows: During operation, the cylinder 5 on the molding machine frame 1 is activated, and its output shaft drives the upper mold base 3 to move downward, precisely closing with the lower mold base 2. Pressure is applied to the paper-plastic raw material placed between the mold bases, and heating is also provided to complete the wet pressing molding process. During this process, the moisture in the raw material evaporates due to heating, forming steam. The detailed operating principle of the molding machine is known prior art and will not be elaborated upon. Subsequently, the steam recovery component 6 works synchronously. The steam recovery pipe 602 fixed by the support 601 is connected to the collection hood 604 through multiple sets of branch pipes 603. The collection hood 604 completely covers the lower mold base 2 and the upper mold base. In the forming area of ​​section 3, the evaporated steam is captured. The high-temperature resistant air pump 607 is started, creating negative pressure in the gas delivery pipe 606. The collected steam is then transported sequentially through the branch pipe 603, the steam recovery pipe 602, and the hose 605 to the cyclone separator 7. After entering the cyclone separator 7, the steam achieves efficient gas-liquid separation based on the centrifugal separation principle. The liquid-containing steam enters the cyclone separator 7 tangentially from the air inlet, forming a high-speed rotating airflow inside the cylinder. Due to the density difference between the liquid water droplets and the steam, the water droplets are thrown towards the inner wall of the separator under the action of centrifugal force. After being blocked by the inner wall, they lose their inertial force. The steam flows downwards along the wall under gravity and eventually falls into the corresponding water collection box 11 below for collection. Meanwhile, the steam, having had most of its liquid water removed, is driven by the rotating airflow to converge towards the center of the separator, then flows upwards and exits from the outlet of the cyclone separator 7. The wet steam, initially dried by the cyclone separator 7, is transported to the metal wire mesh demister 9 through the insulation pipe 8. The wet steam enters from the bottom of the shell 901 of the metal wire mesh demister 9, first flowing through three staggered baffle layers (first baffle layer 902, second baffle layer 903, and third baffle layer 904). As the flow direction is constantly changed by the obstruction of the baffle plate body 909, the mist droplets are impacted by inertia and condense and drip. Then, the steam enters the metal wire mesh filling layer 905 to capture the residual tiny mist droplets and achieve deep demisting. The dry high-temperature gas obtained after deep demisting is collected through the exhaust hood 906 at the top of the shell 901 and discharged from the exhaust pipe 907, directly connected to the paper and plastic product drying process to provide heat for the drying process and realize waste heat recovery and utilization. At the same time, the liquid condensed in the metal wire mesh demister 9 is collected in the water collection area at the bottom of the shell 901. The valve on the water outlet pipe 9010 is opened periodically to discharge the liquid.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waste heat recovery and drying device for paper-plastic wet pressing molding, comprising a molding machine frame (1), a lower mold base (2) disposed on the molding machine frame (1), and an upper mold base (3) disposed corresponding to the lower mold base (2), characterized in that: A mounting bracket (4) is fixedly connected to one side of the molding machine frame (1), and a cylinder (5) is mounted on the mounting bracket (4). The lower end of the output shaft of the cylinder (5) is fixedly connected to the upper mold base (3) to drive the upper mold base (3) to move up and down to achieve wet pressing molding. It also includes a steam recovery component (6) for recovering steam generated during the molding process, a cyclone separator (7) for gas-liquid separation of steam, a heat insulation pipe (8) for conveying steam, and a metal wire mesh demister (9) for demisting steam. The steam recovery component (6) is mounted on the molding machine frame (1) and communicates with the cyclone separator (7). The heat insulation pipe (8) is connected between the outlet of the cyclone separator (7) and the inlet of the metal wire mesh demister (9).

2. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 1, characterized in that: The steam recovery assembly (6) includes a support (601), a steam recovery pipe (602), a branch pipe (603), a collection hood (604), a hose (605), a gas delivery pipe (606), and a high-temperature resistant gas pump (607). The support (601) is fixed on the frame (1) of the molding machine. The steam recovery pipe (602) is installed on the support (601). One end of the branch pipe (603) is connected to the steam recovery pipe (602), and the other end is connected to the collection hood (604). The collection hood (604) is set in the molding area corresponding to the lower mold base (2) and the upper mold base (3). The steam recovery pipe (602) is connected to one end of the gas delivery pipe (606) through the hose (605). The other end of the gas delivery pipe (606) is connected to the air inlet of the cyclone separator (7). The high-temperature resistant gas pump (607) is connected in series with the gas delivery pipe (606) to provide power for steam delivery.

3. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 1, characterized in that: The metal wire mesh demister (9) includes a housing (901) and a first baffle layer (902), a second baffle layer (903), a third baffle layer (904) and a metal wire mesh filling layer (905) arranged sequentially from bottom to top inside the housing (901). The metal wire mesh filling layer (905) is filled with a metal wire mesh body (908). The first baffle layer (902), the second baffle layer (903) and the third baffle layer (904) are each composed of a number of parallel baffle bodies (909), and the baffle bodies (909) of adjacent baffle layers are arranged in an alternating manner. An exhaust hood (906) is fixedly connected to the top of the housing (901), and an exhaust pipe (907) is connected to the exhaust hood (906).

4. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 3, characterized in that: The distance between the third baffle layer (904) and the metal mesh filling layer (905) is 100-200mm.

5. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 3, characterized in that: The tilt angle of the baffle plate body (909) is 15°-30°; and the surface of the baffle plate body (909) is provided with a corrosion-resistant coating. The metal wire mesh body (908) is a stainless steel woven mesh, and the mesh count of the metal wire mesh body (908) is 80-120 mesh.

6. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 3, characterized in that: The baffle body (909) is provided with equally spaced through holes with a diameter of 10-15mm. The through holes allow some low-speed steam to pass through, avoiding excessive airflow impact during intermittent air intake, which could cause the baffle body (909) to vibrate or cause liquid splashing. The spacing between adjacent baffle layers decreases sequentially from the gas inlet area to the outlet area.

7. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 3, characterized in that: A water collection area is formed on the inner bottom of the housing (901), and a water outlet pipe (9010) is connected to one side of the housing (901) corresponding to the water collection area. A valve is installed on the water outlet pipe (9010).

8. The waste heat recovery and drying device for paper-plastic wet pressing according to claim 1, characterized in that: A bracket (10) is fixedly connected to the outer wall of the cyclone separator (7). The waste heat recovery and drying device for paper-plastic wet pressing also includes a water collection box (11), which is correspondingly arranged below the cyclone separator (7).

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