Energy-saving drying device for paper pulp molding

Abstract

The utility model discloses a pulp molding energy-saving drying device which comprises a drying chamber, the top of the drying chamber is sequentially provided with a vacuum pump, a pipeline fan, a drying device and a heater, the top of the drying chamber is fixedly connected with an air circulating pipe, and the surface of the air circulating pipe is communicated with an exhaust pipe. One end of the exhaust pipe is communicated with a first connecting pipe and a second connecting pipe through a tee joint, one end of the first connecting pipe is communicated with the inlet end of the vacuum pump, one end of the second connecting pipe is communicated with the air inlet end of the pipeline fan, the air outlet end of the pipeline fan is communicated with one end of the drying device, and the air outlet end of the drying device is communicated with one end of the heater. The inner wall of the drying chamber is fixedly connected with an air outlet plate, and the other end of the heater is communicated with the air inlet end of the air outlet plate through a third connecting pipe. According to the energy-saving drying device for paper pulp molding, the energy consumption is reduced on the basis of ensuring the drying effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper pulp moulding energy -conserving drying device of forming relates to drying equipment technical field, specifically is a kind of paper pulp moulding energy -conserving drying device. BACKGROUND

[0002] Paper pulp moulding is a kind of three-dimensional papermaking technology. It uses waste paper as raw material to shape certain shape paper products on molding machine by special mold, and is used as packaging cushion, which has good cushioning performance. Paper pulp molded product is manufactured by raw material beating, batching, molding, drying and setting process. Because a large amount of water is left on the workpiece after molding, about half of the weight of the workpiece is removed during the drying process of the workpiece. The paper pulp molding drying equipment on the market usually dries the paper pulp by air heating, so that hot air is blown through the paper pulp to help the paper pulp dry quickly, and then the tail gas is discharged.

[0003] Because phase change occurs during the drying process, the energy consumption is very large, and the paper pulp molded product is a high energy consumption product. In order to achieve energy-efficient drying effect, a paper pulp molding energy-saving drying device is needed. SUMMARY

[0004] In order to solve the above defects, the utility model provides a kind of paper pulp moulding energy -conserving drying device, reduce energy consumption on the basis of guaranteeing drying effect.

[0005] In order to achieve the above purpose, the utility model provides a technical scheme, a kind of paper pulp moulding energy -conserving drying device, including drying chamber, the top of the drying chamber is sequentially provided with vacuum pump, pipeline fan, drying device and heater, the top of the drying chamber is fixedly connected with air circulation pipe, the surface of the air circulation pipe is communicated with exhaust pipe, one end of the exhaust pipe is communicated with first connecting pipe and second connecting pipe through three-way communication, one end of the first connecting pipe is communicated with the inlet end of vacuum pump, one end of the second connecting pipe is communicated with the air inlet end of pipeline fan, the air outlet end of the pipeline fan is communicated with one end of drying device, the air outlet end of the drying device is communicated with one end of heater, the inner wall of the drying chamber is fixedly connected with air outlet plate, the other end of the heater is communicated with the air inlet end of air outlet plate through third connecting pipe, the surface of the third connecting pipe is also communicated with drying pipe, one end of the drying pipe is communicated with the heating port end of drying device, the surface of the air circulation pipe is provided with air inlet hole.

[0006] Preferably, the surface of the first connecting pipe is provided with a first valve, and the surface of the second connecting pipe is provided with a second valve.

[0007] Preferably, the drying device comprises a cylinder, a rotating shaft is rotatably connected to the center of the cylinder, a connecting sleeve is fixedly connected to the surface of the rotating shaft, a ring is slidably connected to the inner wall of the cylinder, a connecting plate is fixedly connected between the surface of the connecting sleeve and the inner wall of the ring, water-absorbing cotton is filled between the connecting sleeve and the ring, a partition plate is further fixedly connected to the inner wall of the cylinder, the partition plate divides the inside of the cylinder into a water-absorbing area and an evaporation area, an air inlet pipe and an air outlet pipe are respectively communicated with the surface of the cylinder on both sides and at positions corresponding to the water-absorbing area, and a heating pipe and an evaporation pipe are respectively communicated with the surface of the cylinder on both sides and at positions corresponding to the evaporation area.

[0008] Preferably, the area ratio of the water-absorbing area to the evaporation area is 2:1, a motor for driving the rotating shaft to rotate is further fixedly connected to the surface of the cylinder, the connecting plate is provided with three and is uniformly distributed along the circumference of the connecting sleeve, and an air outlet pipe is communicated with the surface of the evaporation pipe.

[0009] Preferably, the air outlet plate comprises a frame, the frame is a flat hollow cuboid, an air inlet pipe is communicated with one end of the frame, air baffle plates are equidistantly arranged on the inner wall of the frame, flaps are fixedly connected to one end of the air baffle plates, one end of the flaps extends to one side of the air inlet pipe, and ventilation holes are arranged on the surface of the frame.

[0010] Preferably, a placing rack is arranged in the drying chamber, a sealing door is hingedly connected to one side of the drying chamber, and a sealing strip is arranged on one side of the sealing door.

[0011] Preferably, the first valve and the second valve are electric valves, and a controller is arranged on one side of the drying chamber.

[0012] The paper pulp molding energy-saving drying device has the beneficial effects that: the vacuum pump is arranged to extract the air in the drying chamber, when the pressure in the drying chamber is reduced to a certain degree, the water in the paper pulp molding starts to evaporate and is extracted by the vacuum pump; then the pipeline fan and the heater are used to realize cyclic heating, and the drying device is used to adsorb the steam, thereby realizing the drying of the paper pulp molding; and the drying device can evaporate through the hot gas of the heater, thereby being convenient to reuse. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the whole utility model;

[0014] Figure 2 It is a structural schematic diagram of the drying device inside the utility model Figure One ;

[0015] Figure 3 It is a structural schematic diagram of the drying device inside the utility model Figure Two ;

[0016] Figure 4 It is the structural schematic view of the air outlet plate of the utility model.

[0017] In the figure: 1 - drying chamber, 2 - vacuum pump, 3 - pipeline fan, 4 - drying device, 41 - cylinder, 42 - rotating shaft, 43 - connecting sleeve, 44 - circular ring, 45 - connecting plate, 46 - water-absorbing cotton, 47 - partition, 48 - air inlet pipe, 49 - air outlet pipe, 410 - heating pipe, 411 - evaporation pipe, 412 - motor, 5 - heater, 6 - air circulation pipe, 7 - exhaust pipe, 8 - first connecting pipe, 9 - second connecting pipe, 10 - air outlet plate, 101 - frame body, 102 - air inlet pipe, 103 - baffle, 104 - folding plate, 11 - third connecting pipe, 12 - drying pipe, 13 - first valve, 14 - second valve, 16 - placing rack, 17 - sealing door, 18 - controller. DETAILED DESCRIPTION

[0018] The utility model is further explained below in combination with the drawings.

[0019] Example one: please refer to Figures 1-4 The utility model provides a kind of technical scheme: a pulp molding energy-saving drying device, including drying chamber 1, the top of drying chamber 1 is sequentially provided with vacuum pump 2, pipeline fan 3, drying device 4 and heater 5, and temperature control device is arranged in heater 5, ensure that the temperature after heating is kept between 60-80 degrees Celsius, the top of drying chamber 1 is fixedly connected with air circulation pipe 6, air circulation pipe 6 is provided with air inlet hole on the surface, and air circulation pipe 6 is communicated with exhaust pipe 7 on the surface, one end of exhaust pipe 7 is communicated with first connecting pipe 8 and second connecting pipe 9 by three-way, one end of first connecting pipe 8 is communicated with the inlet end of vacuum pump 2, and vacuum pump 2 can extract air in drying chamber 1 by corresponding pipeline, so that the pressure in drying chamber 1 is reduced to a certain value, when the pressure in drying chamber 1 is reduced to a certain degree, the moisture in pulp molding begins to evaporate, because the saturated vapor pressure of moisture is lower than the pressure in vacuum chamber at this time, so moisture will rapidly evaporate into steam, and the steam after evaporation is extracted from vacuum chamber by vacuum pump 2, so that the purpose of dehydration is realized.

[0020] One end of second connecting pipe 9 is communicated with the air inlet end of pipeline fan 3, the air outlet end of pipeline fan 3 is communicated with one end of drying device 4, the air outlet end of drying device 4 is communicated with one end of heater 5, the inner wall of drying chamber 1 is fixedly connected with air outlet plate 10, the other end of heater 5 is communicated with the air inlet end of air outlet plate 10 by third connecting pipe 11, and the recycling of hot air is realized by pipeline fan 3, drying device 4 and heater 5, so that energy consumption is reduced.

[0021] The surface of the third connecting pipe 11 is also communicated with a drying pipe 12, one end of the drying pipe 12 is communicated with the heating port of the drying device 4, and is used for heating in the drying device 4 to realize internal water evaporation.

[0022] The surface of the first connecting pipe 8 is provided with a first valve 13, the surface of the second connecting pipe 9 is provided with a second valve 14, the first valve 13 and the second valve 14 adopt electric valves, one side of the drying chamber 1 is provided with a controller 18, vacuum dehumidification is realized by opening the first valve 13 and closing the second valve 14, and air circulation heating and drying is realized by closing the first valve 13 and opening the second valve 14.

[0023] The drying device 4 comprises a cylinder 41, the center of the cylinder 41 is rotationally connected with a rotating shaft 42, the surface of the rotating shaft 42 is fixedly connected with a connecting sleeve 43, the inner wall of the cylinder 41 is slidably connected with a ring 44, the surface of the connecting sleeve 43 is fixedly connected with the inner wall of the ring 44, and the connecting sleeve 43 and the ring 44 are further filled with water-absorbing cotton 46, the water-absorbing cotton 46 adopts aluminum silicate fiber or cotton fiber, the inner wall of the cylinder 41 is further fixedly connected with a partition plate 47, the partition plate 47 divides the inside of the cylinder 41 into a water-absorbing area and an evaporation area, the surface of the two sides of the cylinder 41 and the corresponding positions of the water-absorbing area are respectively communicated with an air inlet pipe 48 and an air outlet pipe 49, and the surface of the two sides of the cylinder 41 and the corresponding positions of the evaporation area are respectively communicated with a heating pipe 410 and an evaporation pipe 411.

[0024] The connecting plate 45 is provided with three and is uniformly distributed along the circumference of the connecting sleeve 43, the area ratio of the water-absorbing area to the evaporation area is 2:1, the surface of the cylinder 41 is further fixedly connected with a motor 412 for driving the rotating shaft 42 to rotate, the ring 44 is driven to rotate by the motor 412, so that the water-absorbing cotton 46 at different positions enters the water-absorbing area and the evaporation area, and the drying effect is improved.

[0025] The surface of the evaporation pipe 411 is communicated with the air outlet pipe 15, the hot air enters from the heating pipe 410 to heat the water-absorbing cotton 46 in the evaporation area, and the water evaporates and is discharged from the evaporation pipe 411.

[0026] The air outlet plate 10 comprises a frame body 101, the frame body 101 is a flat hollow cuboid, one end of the frame body 101 is communicated with an air inlet pipe 102, the inner wall of the frame body 101 is provided with air baffle plates 103 at equal intervals, one end of the air baffle plate 103 is fixedly connected with a folding plate 104, one end of the folding plate 104 extends to one side of the air inlet pipe 102, the surface of the frame body 101 is provided with ventilation holes, the setting of the folding plate 104 ensures that the air can fill the entire frame body 101, and ensures that the heated air is uniformly distributed in the drying chamber 1,

[0027] The drying chamber 1 is provided with a placing rack 16 for placing the pulp mold to be dried, and a sealing door 17 is hinged to one side of the drying chamber 1, and a sealing strip is arranged on one side of the sealing door 17 to ensure the sealing property of the drying chamber 1.

[0028] In operation, the second valve 14 is closed and the first valve 13 is opened, and the vacuum pump 2 reduces the pressure in the drying chamber 1 to -0.08 MPa within 15 min, and the moisture content of the pulp mold is reduced from 65% to 45%; then the first valve 13 is closed and the second valve 14 is opened, and the hot air at 70℃ is blown to the pulp mold on the placing rack 16 at a flow rate of 1.2 m / s through the air outlet plate 10, the wet hot air is dehumidified by the drying device 4, the motor 412 rotates the water absorption cotton 46 to the evaporation area every 30 min, the hot air in the heater 5 is heated by the heating pipe 410 to desorb and regenerate the water absorption cotton, and the evaporated water is discharged through the air outlet pipe 15.

[0029] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0030] The above only describes the preferred embodiment of the fixed and installed prior art type of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pulp molded forming energy saving drying device comprising a drying chamber (1), characterized in that: The top of the drying chamber (1) is sequentially provided with a vacuum pump (2), a pipeline fan (3), a drying device (4) and a heater (5), the top of the drying chamber (1) is fixedly connected with an air circulation pipe (6), the surface of the air circulation pipe (6) is communicated with an exhaust pipe (7), one end of the exhaust pipe (7) is communicated with a first connecting pipe (8) and a second connecting pipe (9) through a three-way pipe, one end of the first connecting pipe (8) is communicated with the inlet end of the vacuum pump (2), one end of the second connecting pipe (9) is communicated with the air inlet end of the pipeline fan (3), the air outlet end of the pipeline fan (3) is communicated with one end of the drying device (4), the air outlet end of the drying device (4) is communicated with one end of the heater (5), the inner wall of the drying chamber (1) is fixedly connected with an air outlet plate (10), the other end of the heater (5) is communicated with the air inlet end of the air outlet plate (10) through a third connecting pipe (11), the surface of the third connecting pipe (11) is also communicated with a drying pipe (12), one end of the drying pipe (12) is communicated with the heating port end of the drying device (4), the surface of the air circulation pipe (6) is provided with an air inlet hole.

2. A pulp molded forming energy saving drying device according to claim 1, characterized in that: The surface of the first connecting pipe (8) is provided with a first valve (13), and the surface of the second connecting pipe (9) is provided with a second valve (14).

3. A pulp molded forming energy saving drying device according to claim 1, characterized in that: The drying device (4) comprises a cylinder (41), the center of the cylinder (41) is rotatably connected with a rotating shaft (42), the surface of the rotating shaft (42) is fixedly connected with a connecting sleeve (43), the inner wall of the cylinder (41) is slidably connected with a circular ring (44), the surface of the connecting sleeve (43) and the inner wall of the circular ring (44) are fixedly connected with a connecting plate (45), the connecting sleeve (43) and the circular ring (44) are also filled with water-absorbing cotton (46), the inner wall of the cylinder (41) is also fixedly connected with a partition plate (47), the partition plate (47) divides the inside of the cylinder (41) into a water absorption area and an evaporation area, the surfaces of the two sides of the cylinder (41) and the corresponding positions of the water absorption area are respectively communicated with an air inlet pipe (48) and an air outlet pipe (49), the surfaces of the two sides of the cylinder (41) and the corresponding positions of the evaporation area are respectively communicated with a heating pipe (410) and an evaporation pipe (411).

4. A pulp molded forming energy saving drying device according to claim 3, characterized in that: The area ratio of the water absorption area to the evaporation area is 2:1, the surface of the cylinder (41) is also fixedly connected with a motor (412) for driving the rotation of the rotating shaft (42), the connecting plate (45) is provided with three and is uniformly distributed along the circumference of the connecting sleeve (43), and the surface of the evaporation pipe (411) is communicated with an air outlet pipe (15).

5. A pulp molded forming energy saving drying device according to claim 1, characterized in that: The air outlet plate (10) comprises a frame body (101), the frame body (101) is a flat hollow cuboid, one end of the frame body (101) is communicated with an air inlet pipe (102), the inner wall of the frame body (101) is provided with air baffle plates (103) at equal intervals, one end of the air baffle plate (103) is fixedly connected with a folding plate (104), one end of the folding plate (104) extends to one side of the air inlet pipe (102), and the surface of the frame body (101) is provided with ventilation holes.

6. A pulp molded forming energy saving drying device according to claim 1, characterized in that: The drying chamber (1) is internally provided with a rack (16), one side of the drying chamber (1) is hingedly provided with a sealing door (17), and one side of the sealing door (17) is provided with a sealing strip.

7. A pulp molded forming energy saving drying device according to claim 2, characterized in that: The first valve (13) and the second valve (14) are electric valves, and one side of the drying chamber (1) is provided with a controller (18).

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