Molded pulp drying and heating device

Abstract

The invention relates to the technical field of drying and heating devices, in particular to a molded pulp drying and heating device which comprises a base and a molded pulp body, a plurality of U-shaped frames are fixedly connected to the outer wall of the top end of the base, a box is fixedly connected to the outer walls of the top ends of the U-shaped frames, and a conveyor is mounted on the outer wall of the top end of the base; a plurality of bottom frames are fixedly connected to the outer wall of the conveyor, large gears and small gears are rotatably arranged on the inner walls of the bottom frames, the large gears are meshed with the small gears, a circular plate is fixedly connected to the outer wall of the top end of each large gear, and an annular frame is fixedly connected to the outer wall of the top end of each circular plate. Sliding grooves are formed in the outer walls of the two sides of the bottom of the annular frame. The continuously rotating molded pulp body is matched with circularly flowing hot air, so that the contact drying speed of each surface of the molded pulp body and the hot air is basically consistent, the product drying quality is ensured, the alternately replaced supporting structures avoid drying dead angles, and the molded pulp drying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drying and heating devices, in particular to a pulp molding drying and heating device. Background Art

[0002] Pulp molding has the characteristics of being a poor conductor of heat, high moisture content, and low ignition point. That is, the wet pulp molding needs to be dried by special drying equipment. The basic principle of traditional pulp molding drying equipment is to heat the air with various energy sources, and then use the hot air to dry the pulp molding. However, the traditional hot drying equipment takes a long time to dry the wet pulp due to the high moisture content of the wet pulp. The drying cost is high and the drying efficiency is low, resulting in incomplete drying, which wastes a lot of energy.

[0003] After searching the Chinese patent with publication number CN208860072U, a pulp molding drying device is disclosed, in which the first hot air blower and the second hot air blower are respectively located at the two ends of the drying box. When working, the hot air at the two ends forms convection, thereby drying all the pulp moldings on the conveying device, thereby improving the drying efficiency; the design of the steam main pipe and the steam nozzle is used to spray the high-temperature steam in the steam main pipe to the surface of the pulp molding through the steam nozzle, thereby achieving high-temperature drying, which improves the drying efficiency to a certain extent; the design of the second motor and the arc heating plate is used to drive the arc heating plate to rotate through the second motor, thereby evenly drying the pulp molding and improving the drying efficiency.

[0004] Based on the above search and combined with the prior art, it was found that: the existing pulp molding is placed still during drying, or is moved with the conveying structure to the inside of the drying structure, and is dried by the heating structure or high-temperature steam, but the surface of the bottom of the pulp molding that is in contact with the placement structure cannot directly contact the heating structure or high-temperature steam, and there is a drying dead angle, resulting in poor drying effect at the bottom of the pulp molding, uneven drying affecting the quality, and the heating structure and high-temperature steam cannot evenly contact all surfaces of the pulp molding. The surface of the pulp molding that directly contacts the hot air and the surface that indirectly contacts the hot air have different drying speeds, which is also easy to affect the product quality and reduce the drying efficiency of the pulp molding. Summary of the invention

[0005] The object of the present invention is to provide a pulp molding drying and heating device to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a pulp molding drying and heating device, comprising a base and a pulp molding body, the top outer wall of the base is fixedly connected with a plurality of U-shaped frames, the top outer wall of the U-shaped frame is fixedly connected with a box, the top outer wall of the base is installed with a conveyor, the outer wall of the conveyor is fixedly connected with a plurality of bottom frames, the inner wall of the bottom frame is rotatably provided with a large gear and a small gear, the large gear and the small gear are meshed, the top outer wall of the large gear is fixedly connected with a circular plate, the top outer wall of the circular plate is fixedly connected with an annular frame, the outer walls on both sides of the bottom of the annular frame are provided with slide grooves, the slide grooves The inner wall of the annular frame is slidably connected with a sliding plate, a plurality of ventilation holes are opened on the top outer wall of the annular frame, a plurality of vertical rods are fixedly connected to the top outer wall of the sliding plate, the inner walls on both sides of the box body are fixedly connected with mounting frames, an outer wall on one side of the mounting frame is fixedly connected with an air guide cover, an outer wall on one side of the air guide cover is fixedly connected with a filter frame, an outer wall on the other side of the mounting frame is fixedly connected with a rectangular frame, an outer wall on the other side of the bottom of the mounting frame is fixedly connected with a rack, an inner wall of the filter frame is provided with an adsorbent, a hot air blower is installed on the inner wall on one side of the mounting frame, and an outer wall on one side of the rectangular frame is fixedly connected with a trapezoidal plate.

[0007] Preferably, the filter frame is arranged in a triangular shape, a handle is fixedly connected to one side outer wall of the filter frame, a rectangular hole is opened on one side outer wall of the box body, the rectangular hole is adapted to the size of the handle, the racks are meshed with the pinion, and the adsorbent is made of silica gel.

[0008] Preferably, an outlet pipe is connected to the output end of the hot air blower, and the outlet pipe is connected to the rectangular frame. The top and bottom outer walls of the rectangular frame are provided with outlet holes, and the outlet holes are distributed in a linear array. The top and bottom air outlet holes of the rectangular frame are respectively adapted to the height of the annular frame and the circular plate.

[0009] Preferably, the size of the air guide cover is matched with that of the filter frame, an air guide hole is provided on one outer wall of the air guide cover, the air guide hole is matched with the position of the hot air blower, both side outer walls of the trapezoidal plate are provided with inclined surfaces, and the height of the trapezoidal plate is matched with that of the sliding plate.

[0010] Preferably, a cavity is formed on the top outer wall of the annular frame, a telescopic rod is fixedly connected to the bottom inner wall of the cavity, one end of the telescopic rod piston rod is fixedly connected to the outer wall of the bottom end of the sliding plate, a return spring is sleeved on the outer wall of the telescopic rod, and both ends of the return spring are respectively fixedly connected to the sliding plate and the circular plate.

[0011] Preferably, the vents and the uprights are distributed in a circular array, the uprights are located directly below the vents, both side outer walls of the top of the annular frame are fixedly connected to limit blocks, and the annular frame and the limit blocks are adapted to the size of the pulp molding body.

[0012] Preferably, inlet and outlet are provided on both side outer walls of the bottom of the box body, dust curtains are fixedly connected to the top inner walls of the inlet and outlet, the inlet and outlet are adapted to the width of the bottom frame, the inlet and outlet are adapted to the sum of the heights of the annular frame and the pulp molding body, and air guide grooves are provided on both side inner walls of the top of the box body, and the air guide grooves are adapted to the positions of the bottom frame and the filter frame.

[0013] Preferably, mounting holes are provided on the inner walls on both sides of the top of the U-shaped frame, and squeezing rollers are rotatably provided on the inner walls of the mounting holes, the squeezing rollers are located directly below the absorbent cotton, the squeezing rollers are rollingly connected to the outer wall of the absorbent cotton, the absorbent cotton is slidably connected to the outer wall of the bottom end of the filter frame, the sliding plate is circularly arranged, the sliding plate is adapted to the size of the annular frame, and a pair of arc holes which are coaxial with the sliding plate and symmetrically arranged are provided on the outer wall of the top end of the sliding plate, and the arc holes are adapted to the size of the annular frame.

[0014] The present invention provides a pulp molding drying and heating device through improvement, which has the following improvements and advantages compared with the prior art: First, the present invention is provided with a box body, a conveyor, a bottom frame, an annular frame, a sliding plate, a hot air blower and a filter frame. The hot air blower allows the air in the box body to circulate continuously, and the pulp molded body is dried and heated uniformly and continuously. In the drying and heating process, the pulp molded body rotates continuously under the action of the rack and the linkage meshing of the small gear and the large gear. Each surface of the pulp molded body is uniformly and synchronously in contact with the hot air, further improving the drying effect of the pulp molded body. When the pulp molded body is rotated for drying, the trapezoidal plate causes the sliding plate to rise first and then fall. Before the sliding plate rises, the hot air passes through the vent holes of the annular frame to dry the surface placed at the bottom of the pulp molded body. After the sliding plate rises, the vertical rod passes through the vent holes to support the pulp molded body, and the previously blocked part is exposed to complete comprehensive drying. The continuously rotating pulp molded body cooperates with the circulating hot air to make each surface of the pulp molded body contact with the hot air at a substantially consistent drying speed, thereby ensuring the drying quality of the product. The alternately replaced support structure avoids drying dead corners, thereby improving the drying efficiency of pulp molding. Secondly, the present invention is provided with an air guide groove, an air guide cover and a rectangular frame. The hot air is output through the air outlet holes at the top and bottom of the rectangular frames on both sides to form convection, and then rises after drying the pulp molded body, and enters the two air guide grooves respectively. Under the action of the air guide grooves, it moves downward more smoothly, and finally returns to the installation frame under the action of the air guide cover after being filtered by the filter frame. The hot air movement is guided more smoothly, and the drying is uniform, which reduces the heat loss, and ensures that the pulp molded body is dried and heated more uniformly.

[0015] Thirdly, the present invention is provided with a conveyor and absorbent cotton. After the pulp molded body is dried and heated, the temperature of the hot air decreases. After being filtered by the filter frame, part of the water vapor will condense on the outer wall of the filter frame, forming water droplets that slide down and are absorbed by the absorbent cotton and output from the box body along with the absorbent cotton. Impurities generated by drying are also filtered and discharged, preventing the hot air from evaporating the water droplets again to affect the drying effect of the pulp molded body and affect the product quality.

[0016] Fourthly, the present invention is provided with a U-shaped frame and a squeezing roller. When the absorbent cotton moving with the conveyor passes through the U-shaped frame, the squeezing roller squeezes the absorbent cotton, and most of the absorbed water is discharged to prevent it from returning to the box body with the conveyor to affect the drying speed of the pulp molding body, thereby ensuring the drying effect of the pulp molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a sectional side view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the bottom frame connection structure of the present invention; Figure 4 It is an exploded schematic diagram of the annular frame connection structure of the present invention; Figure 5 is an exploded schematic diagram of the sliding plate connection structure of the present invention; Figure 6 is a cross-sectional side view of the mounting frame connection structure of the present invention; Figure 7 It is a schematic diagram of the air guide cover connection structure of the present invention; Figure 8 It is a schematic diagram of the rectangular frame connection structure of the present invention; Fig. 9 It is an exploded schematic diagram of the filter frame connection structure of the present invention; Fig.10 It is a schematic diagram of the U-shaped frame connection structure of the present invention.

[0018] Description of reference numerals: 1. Base; 2. Conveyor; 3. Handle; 4. Dust curtain; 5. Box; 6. Absorbent cotton; 7. U-shaped frame; 8. Squeeze roller; 9. Mounting frame; 10. Rectangular frame; 11. Bottom frame; 12. Pulp molding body; 13. Ring frame; 14. Filter frame; 15. Vent; 16. Cavity; 17. Pinion; 18. Circular plate; 19. Sliding plate; 20. Vertical pole; 21. Telescopic pole; 22. Large gear; 23. Reset spring; 24. Hot air blower; 25. Adsorbent; 26. Air guide cover; 27. Trapezoidal plate; 28. Rack; 29. ​​Air outlet; 30. Slide; 31. Arc hole; 32. Air guide slot; 33. Air guide hole; 34. Air outlet pipe. DETAILED DESCRIPTION

[0019] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention provides a pulp molding drying and heating device through improvement. The technical solution of the present invention is: like Figure 1-Figure 10 As shown, a pulp molding drying and heating device includes a base 1 and a pulp molding body 12, the top outer wall of the base 1 is fixedly connected with a plurality of U-shaped frames 7, the top outer wall of the U-shaped frame 7 is fixedly connected with a box 5, the top outer wall of the base 1 is installed with a conveyor 2, the outer wall of the conveyor 2 is fixedly connected with a plurality of bottom frames 11, the inner wall of the bottom frame 11 is rotatably provided with a large gear 22 and a small gear 17, the large gear 22 and the small gear 17 are meshed, the top outer wall of the large gear 22 is fixedly connected with a circular plate 18, the top outer wall of the circular plate 18 is fixedly connected with an annular frame 13, the outer walls of both sides of the bottom of the annular frame 13 are provided with slide grooves 30, and the inner wall of the slide groove 30 A sliding plate 19 is slidably connected, a plurality of ventilation holes 15 are provided on the top outer wall of the annular frame 13, a plurality of vertical poles 20 are fixedly connected to the top outer wall of the sliding plate 19, the inner walls on both sides of the box body 5 are fixedly connected to the mounting frames 9, an air guide cover 26 is fixedly connected to the outer wall on one side of the mounting frame 9, a filter frame 14 is fixedly connected to the outer wall on one side of the air guide cover 26, a rectangular frame 10 is fixedly connected to the outer wall on the other side of the mounting frame 9, a rack 28 is fixedly connected to the outer wall on the other side of the bottom of the mounting frame 9, an adsorbent 25 is provided on the inner wall of the filter frame 14, a hot air blower 24 is installed on the inner wall on one side of the mounting frame 9, and a trapezoidal plate 27 is fixedly connected to the outer wall on one side of the rectangular frame 10.

[0021] Furthermore, the filter frame 14 is arranged in a triangular shape, and a handle 3 is fixedly connected to the outer wall of one side of the filter frame 14. A rectangular hole is provided on the outer wall of one side of the box body 5, and the rectangular hole is adapted to the size of the handle 3. The racks 28 are meshed with the pinion 17. The adsorbent 25 is made of silicone. An air outlet pipe 34 is plugged into the output end of the hot air blower 24, and the air outlet pipe 34 is connected to the rectangular frame 10. Air outlet holes 29 are provided on the top and bottom outer walls of the rectangular frame 10, and the air outlet holes 29 are distributed in a linear array. The air outlet holes 29 at the top and bottom of the rectangular frame 10 are respectively adapted to the height of the annular frame 13 and the circular plate 18. Only the bottom of the mounting frame 9 near the pinion 17 is provided with a rack 28 meshing with it. The annular frame 13 pushes open the dust curtain 4 when entering the box body 5. After entering, the dust curtain 4 is reset, and a small amount of air enters and exits the box body 5 through the inlet and outlet, which does not affect the overall circulation of hot air inside the box body 5.

[0022] Furthermore, the air guide hood 26 is adapted to the size of the filter frame 14, and an air guide hole 33 is provided on the outer wall of one side of the air guide hood 26, and the air guide hole 33 is adapted to the position of the hot air blower 24. The outer walls on both sides of the trapezoidal plate 27 are provided with inclined surfaces, and the height of the trapezoidal plate 27 is adapted to the sliding plate 19. A cavity 16 is provided on the top outer wall of the annular frame 13, and a telescopic rod 21 is fixedly connected to the bottom inner wall of the cavity 16. One end of the piston rod of the telescopic rod 21 is fixedly connected to the outer wall of the bottom end of the sliding plate 19, and a reset spring 23 is provided on the outer wall of the telescopic rod 21. The two ends of the reset spring 23 are respectively fixedly connected to the sliding plate 19 and the circular plate 18. The reset spring 23 facilitates the reset of the sliding plate 19.

[0023] Furthermore, the vents 15 and the uprights 20 are distributed in a circular array, the uprights 20 are located directly below the vents 15, the outer walls on both sides of the top of the annular frame 13 are fixedly connected to the limit blocks, the annular frame 13 and the limit blocks are adapted to the size of the pulp molding body 12, the outer walls on both sides of the bottom of the box body 5 are provided with inlets and outlets, the top inner walls of the inlets and outlets are fixedly connected with dust curtains 4, the inlets and outlets are adapted to the width of the bottom frame 11, the inlets and outlets are adapted to the sum of the heights of the annular frame 13 and the pulp molding body 12, the inner walls on both sides of the top of the box body 5 are provided with air guide grooves 32, the air guide grooves 32 are adapted to the positions of the bottom frame 11 and the filter frame 14, the inner walls on both sides of the top of the U-shaped frame 7 are provided with mounting holes, the inner walls of the mounting holes are rotatably provided with squeezing rollers 8, the squeezing rollers 8 are located directly below the absorbent cotton 6, and the squeezing rollers 8 are rollingly connected to the outer walls of the absorbent cotton 6 The absorbent cotton 6 is slidably connected to the outer wall of the bottom end of the filter frame 14, and the sliding plate 19 is circularly arranged. The sliding plate 19 is adapted to the size of the annular frame 13. The outer wall of the top of the sliding plate 19 is provided with a pair of arc holes 31 which are coaxial with the sliding plate 19 and symmetrically arranged. The arc holes 31 are adapted to the size of the annular frame 13. When the absorbent cotton 6 moving with the conveyor 2 passes through the U-shaped frame 7, the squeezing roller 8 squeezes the absorbent cotton 6, and most of the absorbed water is discharged to prevent it from returning to the box body 5 to affect the drying effect of the pulp molding body 12. A small amount of water returning to the box body 5 will not affect the drying effect. If it is evaporated, it will be absorbed by the adsorbent 25. After the adsorbent 25 in the filter frame 14 reaches saturation within a certain period of time, the worker uses the handle 3 to pull out the filter frame 14 for replacement. The water absorbed by the adsorbent 25 can be removed by heating or decompression.

[0024] Working principle: When the pulp molding is dried and heated, the pulp molding body 12 is placed on the top of the annular frame 13 on the outer wall bottom frame 11 of the conveyor 2. The pulp molding body 12 pushes the dust curtain 4 with the conveyor 2 to enter the box 5. At the same time, the hot air blower 24 in the installation frame 9 is started to heat and transport the air in the box 5. The hot air blowers 24 in the installation frames 9 on both sides continuously transport hot air to the middle to dry and heat the pulp molding body 12 on the annular frame 13 in the middle of the conveyor 2. The hot air carries the water vapor generated by the drying and heating of the pulp molding and rises to the top of the box 5. Under the action of the air guide groove 32, it moves to both sides and descends to the filter frame 14 position, after the heated and dried airflow carrying water vapor passes through the filter frame 14, the water vapor in the airflow is absorbed by the adsorbent 25 at the first time, and the air passing through is again sucked away by the hot air blower 24 and heated and transported to form a cycle, and the circulating hot air is dried and heated at the pulp molding body 12 position, and moves to the filter frame 14 position. The water vapor carried by the airflow drying is absorbed by the adsorbent 25, and moves to the hot air blower 24 position to be heated again, and the conveyor 2 drives the bottom frame 11 and the pulp molding body 12 to move, and the small gear 17 on the bottom frame 11 is in contact and meshing with the rack 28 on the mounting frame 9, and the small gear 17 rotates and drives the large gear 22 to rotate slowly, The large gear 22 drives the circular plate 18 and the annular frame 13 to rotate, and the pulp molded body 12 on the annular frame 13 rotates and is in uniform contact with the hot air output from the air outlet 29 on the rectangular frame 10, ensuring that each surface is heated synchronously to ensure the drying effect. The surface where the pulp molded body 12 contacts the annular frame 13 is provided with a vent 15, and first part of the hot air passes through the vent 15 to heat and dry a part of the bottom area of ​​the pulp molded body 12. When the annular frame 13 moves to the trapezoidal plate 27, the sliding plate 19 connected to the outer wall slide 30 of the annular frame 13 first contacts the inclined surface on one side of the trapezoidal plate 27, and under the action of the trapezoidal plate 27, the sliding plate 19 gradually moves on the inner wall of the slide 30. Sliding upward, the vertical rod 20 at the top of the sliding plate 19 passes through the vent 15 to support the pulp molding body 12. At this time, the exposed part of the vent 15 at the bottom of the pulp molding body 12 has been dried. After being lifted up by the vertical rod 20, the other part that was blocked is exposed and is evenly dried again. The pulp molding body 12 is in a rotating state when supported by the annular frame 13 and the vertical rod 20, and is evenly dried. Under the action of the inclined surface on the other side of the trapezoidal plate 27, the sliding plate 19 is reset, the vertical rod 20 is separated from the pulp molding body 12, and the annular frame 13 supports and outputs the pulp molding body 12 again, completing the uniform heating and drying of the pulp molding.

[0025] The telescopic rod 21 and the reset spring 23 arranged in the cavity 16 at the top of the annular frame 13 facilitate the reset of the sliding plate 19. The filter frame 14 is arranged in a triangular shape. When the airflow carrying water vapor circulates through the air guide groove 32 to the filter frame 14, the impurities generated by the heating and drying effect are filtered by the filter frame 14. At this time, the airflow temperature drops. When passing through the filter frame 14, the water vapor is adsorbed by the internal silica gel adsorbent 25. At the same time, part of the water vapor will adhere to the outer wall of the filter frame 14 due to the drop in temperature to form water droplets. Water-absorbing cotton 6 is arranged on both sides of the conveyor 2. The water droplets left on the filter frame 14 will be absorbed by the water-absorbing cotton 6 and transported to the box body 5 to prevent the moisture from being absorbed again. The water vapor formed by evaporation affects the heating and drying effect of the internal pulp molded body 12. A squeezing roller 8 is arranged in the U-shaped frame 7. When the absorbent cotton 6 moving with the conveyor 2 passes through the U-shaped frame 7, the squeezing roller 8 squeezes the absorbent cotton 6. Most of the absorbed water is discharged to prevent it from returning to the box body 5 to affect the drying effect of the pulp molded body 12. A small amount of water returning to the box body 5 will not affect the drying effect. If it is evaporated, it will be absorbed by the adsorbent 25. After the adsorbent 25 in the filter frame 14 reaches saturation within a certain period of time, the worker uses the handle 3 to pull out the filter frame 14 for replacement. The water absorbed by the adsorbent 25 can be removed by heating or decompression.

[0026] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A pulp molding drying and heating device, comprising a base (1) and a pulp molding body (12), characterized in that: The top outer wall of the base (1) is fixedly connected to a plurality of U-shaped frames (7), the top outer wall of the U-shaped frame (7) is fixedly connected to a box (5), the top outer wall of the base (1) is installed with a conveyor (2), the outer wall of the conveyor (2) is fixedly connected to a plurality of bottom frames (11), the inner wall of the bottom frame (11) is rotatably provided with a large gear (22) and a small gear (17), the large gear (22) and the small gear (17) are meshed, the top outer wall of the large gear (22) is fixedly connected to a circular plate (18), the top outer wall of the circular plate (18) is fixedly connected to an annular frame (13), both sides of the bottom outer wall of the annular frame (13) are provided with a slide groove (30), the inner wall of the slide groove (30) is slidably connected to a sliding plate (19), the annular frame (13) is fixedly connected to the outer wall of the circular plate (18), and the inner wall of the slide groove (30) is slidably connected to a sliding plate (19). The top outer wall of the frame (13) is provided with a plurality of ventilation holes (15); the top outer wall of the sliding plate (19) is fixedly connected to a plurality of vertical rods (20); the inner walls on both sides of the box body (5) are fixedly connected to a mounting frame (9); an outer wall on one side of the mounting frame (9) is fixedly connected to an air guide cover (26); an outer wall on one side of the air guide cover (26) is fixedly connected to a filter frame (14); an outer wall on the other side of the mounting frame (9) is fixedly connected to a rectangular frame (10); an outer wall on the other side of the bottom of the mounting frame (9) is fixedly connected to a rack (28); an inner wall of the filter frame (14) is provided with an adsorbent (25); a hot air blower (24) is installed on an inner wall on one side of the mounting frame (9); and a trapezoidal plate (27) is fixedly connected to an outer wall on one side of the rectangular frame (10).

2. A pulp molding drying and heating device according to claim 1, characterized in that: The filter frame (14) is arranged in a triangular shape, a handle (3) is fixedly connected to one side outer wall of the filter frame (14), a rectangular hole is opened on one side outer wall of the box body (5), the rectangular hole is adapted to the size of the handle (3), the racks (28) are meshed with the pinions (17), and the adsorbent (25) is made of silica gel.

3. A pulp molding drying and heating device according to claim 1, characterized in that: An outlet pipe (34) is plugged into the output end of the hot air blower (24), and the outlet pipe (34) is in communication with the rectangular frame (10). The top and bottom outer walls of the rectangular frame (10) are provided with outlet holes (29), and the outlet holes (29) are distributed in a linear array. The top and bottom outlet holes (29) of the rectangular frame (10) are respectively adapted in height to the annular frame (13) and the circular plate (18).

4. A pulp molding drying and heating device according to claim 1, characterized in that: The air guide cover (26) is adapted to the size of the filter frame (14); an air guide hole (33) is provided on one side outer wall of the air guide cover (26); the air guide hole (33) is adapted to the position of the hot air blower (24); both side outer walls of the trapezoidal plate (27) are provided with inclined surfaces; the height of the trapezoidal plate (27) is adapted to the height of the sliding plate (19).

5. A pulp molding drying and heating device according to claim 4, characterized in that: The top outer wall of the annular frame (13) is provided with a cavity (16), the bottom inner wall of the cavity (16) is fixedly connected with a telescopic rod (21), one end of the piston rod of the telescopic rod (21) is fixedly connected to the bottom outer wall of the sliding plate (19), the outer wall of the telescopic rod (21) is sleeved with a return spring (23), and the two ends of the return spring (23) are respectively fixedly connected to the sliding plate (19) and the circular plate (18).

6. A pulp molding drying and heating device according to claim 1, characterized in that: The vent holes (15) and the vertical rods (20) are distributed in an annular array, the vertical rods (20) are located directly below the vent holes (15), and both side outer walls of the top end of the annular frame (13) are fixedly connected to limit blocks, and the annular frame (13) and the limit blocks are adapted to the size of the pulp molding body (12).

7. A pulp molding drying and heating device according to claim 1, characterized in that: The outer walls on both sides of the bottom of the box body (5) are provided with inlets and outlets, the top inner walls of the inlets and outlets are fixedly connected with dust curtains (4), the inlets and outlets are adapted to the width of the bottom frame (11), the inlets and outlets are adapted to the sum of the heights of the annular frame (13) and the pulp molding body (12), and the inner walls on both sides of the top of the box body (5) are provided with air guide grooves (32), and the air guide grooves (32) are adapted to the positions of the bottom frame (11) and the filter frame (14).

8. The pulp molding drying and heating device according to claim 1, characterized in that: The inner walls on both sides of the top of the U-shaped frame (7) are provided with mounting holes, and the inner walls of the mounting holes are rotatably provided with squeezing rollers (8), the squeezing rollers (8) are located directly below the absorbent cotton (6), the squeezing rollers (8) are rollingly connected to the outer wall of the absorbent cotton (6), and the absorbent cotton (6) is slidably connected to the outer wall of the bottom end of the filter frame (14), the sliding plate (19) is arranged in a circular shape, the size of the sliding plate (19) is adapted to the size of the annular frame (13), and the outer wall of the top end of the sliding plate (19) is provided with a pair of arc holes (31) which are coaxial with the sliding plate (19) and are symmetrically arranged, and the arc holes (31) are adapted to the size of the annular frame (13).

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