Paper pulp wet blank drying room

Abstract

The utility model discloses a wet paper pulp blank drying room which comprises a drying room body, a hot air unit is arranged at the top of the drying room body, a plurality of drying frames used for placing wet paper pulp blanks are arranged in the drying room body, and spherical airflow distribution plates are further arranged between the hot air unit and the drying frames. Two opposite forced convection fans are arranged on the two sides, the horizontal position and the height of the drying room in a staggered mode, arc-shaped airflow guide plates are arranged beside the two forced convection fans, and the arc-shaped airflow guide plates point to the other forced convection fan. And the two forced convection fans can be matched to realize airflow circulation. In addition, the drying rack is further provided with a dehumidification device, and the drying rack is arranged to be of a detachable structure with inserting grooves and clamping blocks.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper pulp molding product production technical field, concretely relates to a kind of paper pulp green body drying room. BACKGROUND

[0002] Paper pulp molding is a kind of environmentally friendly packaging material production technology, pulp is filtered into green body product by vacuum adsorption on specially-made mold, these green bodies are finally formed into environmentally friendly, cushioning and shockproof packaging products after drying, hot-pressing and other steps.The main components of paper pulp molding green body are about 65% moisture and about 35% plant fiber, which has poor thermal conductivity, high moisture content and low ignition point. Therefore, green body can only be heated and dried by convection and thermal radiation, and direct heating method cannot be used to avoid uneven water evaporation or paper damage.

[0003] At present, paper pulp green body drying is usually carried out in a drying room, a fan is arranged in the drying room to dry the paper pulp green body by air convection, but the temperature and humidity control of the current drying room is limited. During the drying process of a large number of paper pulp green bodies, the air flow is uneven, which causes the paper pulp green bodies entering the drying room at the same time to be unable to dry simultaneously. When the fan has large wind power, the trolley with drying racks will be blown to one side of the drying room, which causes uneven drying. SUMMARY

[0004] The purpose of the utility model is to improve the structure of paper pulp green body drying room, so that the trolley with drying racks can be easily moved and assembled to stabilize and quickly adjust the position of the drying racks to adjust the position of the trolley in the drying room.

[0005] To achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0006] A paper pulp green body drying room includes a drying room body, a hot air blower set is arranged on the top of the drying room body, the hot air blower set is opposite to the inside of the drying room body, and a plurality of drying racks are arranged in the drying room body, characterized in that: a spherical air flow distribution plate is arranged between the hot air blower set and the drying racks.

[0007] Further, a first forced convection fan is arranged in the drying room body at a certain angle with the hot air blower set, a second forced convection fan is arranged opposite to the first forced convection fan, and the first forced convection fan and the second forced convection fan are arranged in staggered manner in height and / or horizontal direction.

[0008] Further, an arc-shaped air flow guide plate is arranged on the side of the drying room body opposite to the first forced convection fan and the second forced convection fan respectively, and the arc-shaped air flow guide plates are respectively directed to the second forced convection fan and the first forced convection fan.

[0009] Further, the hot air unit, the first forced convection fan and the second forced convection fan are respectively connected with a motor, and at least one of the three types of motors is electrically connected with a PLC control system.

[0010] Further, the drying room body is internally provided with a temperature sensor, a humidity sensor and a timer, and the temperature sensor, the humidity sensor and the timer are electrically connected with the PLC control system.

[0011] Further, the drying room body is further provided with a dehumidifying device, the dehumidifying device comprises a refrigerated water pipeline provided at the top of the drying room body and connected with a compressor and a water source, a drain groove is provided below the refrigerated water pipeline, an electronic valve is communicatively provided in the refrigerated water pipeline, and the electronic valve is electrically connected with the PLC control system. The moisture condenses and drops into the drain groove through the refrigerated water pipeline to complete the dehumidifying work.

[0012] Further, the drain groove is provided with a mesh plate to avoid affecting the movement of the drying rack trolley.

[0013] Further, the drying rack comprises a frame and a grid plate detachably arranged on the frame body, the frame is provided with a slot, and the grid plate is provided with a clamping block matched with the slot. The position of each grid plate can be individually detached and adjusted to adapt to paper pulp wet blanks of different heights.

[0014] Further, the drying rack is provided with a castor wheel with a brake.

[0015] Further, the ground of the drying room body is provided with a slope angle, the slope angle is towards the drain groove, the mesh plate is provided with dense mesh, the diameter of the mesh is smaller than the castor wheel of the drying rack, a support column is further arranged between the mesh plate and the ground, and the drain groove is communicated to the outside of the drying room body.

[0016] The advantages and beneficial effects of the present application are as follows:

[0017] 1. The combination of the hot air unit and the spherical air distribution plate ensures uniform distribution of hot air inside the drying room, avoiding local overheating or uneven drying. The staggered arrangement of the first forced convection fan and the second forced convection fan, as well as the use of the arc-shaped air guide plate, forms an effective circulating air flow, enhancing the heat exchange efficiency between the hot air and the paper pulp wet blanks.

[0018] 2. The integration of the PLC control system with the temperature sensor, the humidity sensor and the timer realizes the automation and precise control of the drying process, ensuring the stability and consistency of the drying conditions. The combination of the refrigerated water pipeline and the drain groove in the dehumidifying device effectively removes the moisture in the drying room, improving the drying efficiency, and the automatic control of the electronic valve ensures the intelligentization of the dehumidifying process.

[0019] 3. The detachable grid plate design of the drying rack and the cooperation of the slot and the clamping block make the drying rack flexible to adjust to adapt to pulp wet blank of different heights, improve the versatility and production efficiency of the equipment. The drying rack is provided with a brake-equipped caster, which facilitates the movement and positioning of the drying rack. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the embodiment one of the utility model;

[0021] Figure 2 is a structural schematic diagram two of the embodiment one of the utility model;

[0022] Figure 3 is a structural schematic diagram of the embodiment one A place;

[0023] Figure 4 is a cross-sectional structural schematic diagram of the ground of the drying room body of the embodiment two of the utility model;

[0024] In the drawing:

[0025] 1-drying room body, 2-hot air unit, 3-drying rack, 4-spherical air distribution plate, 5-first forced convection fan, 6-second forced convection fan, 7-arc air guide plate, 8-grid plate, 9-slot, 10-clamping block, 11-caster, 12-temperature sensor, 13-humidity sensor, 14-timer, 15-cold water pipeline, 16-drainage groove, 17-electronic valve, 18-mesh plate, 19-slope angle, 20-supporting column. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model will be further described below in combination with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0027] Embodiment 1

[0028] Please refer to Figures 1-3The application discloses a pulp wet blank drying room, which comprises a drying room body 1, a hot air blower set 2 arranged on the top of the drying room body 1, the hot air blower set 2 comprising a fan and a heating resistance wire connected with a power supply, the hot air blower set 2 being opposite to the drying room body 1, a plurality of drying racks 3 being arranged in the drying room body, and a spherical air flow distribution plate 4 being arranged between the hot air blower set 2 and the drying racks 3. A first forced convection fan 5 is vertically arranged in the drying room body 1 and opposite to the hot air blower set 2, and a second forced convection fan 6 is vertically and horizontally arranged opposite to the first forced convection fan 5. An arc-shaped air flow guide plate 7 is arranged opposite to the first forced convection fan 5 and the second forced convection fan 6 respectively, and the arc-shaped air flow guide plates 7 are respectively directed to the second forced convection fan and the first forced convection fan. The hot air blower set 2, the first forced convection fan 5 and the second forced convection fan 6 are respectively connected with independent motors, and the three types of independent motors are connected with a PLC control system through a circuit.

[0029] The drying rack comprises a frame and a grid plate 8 detachably arranged on the frame, the frame is provided with a slot 9, and the grid plate 8 is provided with a clamping block 10 matched with the slot 9. The position of each grid plate can be conveniently and individually adjusted and removed to adapt to pulp wet blanks of different heights, and the drying rack is further provided with a castor wheel 11 with a brake.

[0030] The drying room body 1 is provided with a temperature sensor 12, a humidity sensor 13 and a timer 14 which are electrically connected with the PLC control system. The drying room body 1 is further provided with a dehumidifying device, the dehumidifying device comprising a refrigerated water pipeline 15 between the drying rack 3 and the spherical air flow distribution plate 4, the refrigerated water pipeline 15 being connected with a water source, a compressor, a pressurizing pump and an electronic valve 17. A drainage groove 16 is arranged below the refrigerated water pipeline 15, and the electronic valve 17 is electrically connected with the PLC control system. Humid air is condensed and dropped into the drainage groove 16 on the surface of the refrigerated water pipeline, so that the dehumidifying work is completed. The drainage groove 16 is provided with a mesh plate 18, so that the movement of the drying rack trolley is not affected by the drainage groove 16.

[0031] Embodiment 2

[0032] Please refer to Figure 4 The difference between the embodiment 2 and the embodiment 1 is that the drainage groove 16 is provided with only one, the ground of the drying room body 1 is provided with a slope 19 with an angle of 5 degrees, the slope 19 is directed to the drainage groove 16, the mesh plate is provided with dense mesh holes, the diameter of the mesh holes is smaller than that of the castor wheel of the drying rack, a supporting column 20 is further arranged between the mesh plate 18 and the ground, and the drainage groove 16 is communicated to the outside of the drying room body 1. The setting can collect the condensed water in the drying room and quickly guide the condensed water out.

[0033] Working principle:

[0034] The top of the drying room body 1 is equipped with a hot air blower set, which directly aims at the inside of the drying room to provide a hot air source with a temperature of about 40 degrees Celsius. The spherical air flow distribution plate 4 ensures uniform distribution of the hot air. Inside the drying room, the first forced convection fan 5 and the second forced convection fan 6 are arranged in a staggered manner, and the two fans are located on opposite sides of the drying room and staggered in height and horizontal direction to enhance the uniformity and penetration of the air flow. In order to further optimize the air flow guide, arc-shaped air flow guide plates 7 are installed on both sides of the drying room body, which respectively point to the opposite fan to ensure that the air flow can be effectively circulated. The hot air blower set 2, the first forced convection fan 5 and the second forced convection fan 7 are all equipped with independent motors and connected to the PLC control system through the circuit to realize automatic control, ensure the accurate adjustment of the temperature and air flow in the drying room, and thus improve the drying efficiency and quality of the pulp wet blank. The drying rack 3 is composed of a frame and detachable grid plates 8, and the grid plates 8 are matched with the slots 9 of the frame through the clamping blocks 10, so that the position of the grid plates can be adjusted according to the height of the pulp wet blank to ensure the best placement of the wet blank during the drying process. The bottom of the drying rack is equipped with casters with brake to facilitate movement and positioning in the drying room.

[0035] The temperature sensor 12, the humidity sensor 13 and the timer 14 are integrated inside the drying room body 1, which are electrically connected with the PLC control system to realize real-time monitoring and automatic control of the internal environment of the drying room. According to the preset drying program, the PLC control system accurately adjusts the operation of the hot air blower set, the forced convection fan and the dehumidifying device to achieve the ideal drying conditions. The dehumidifying device includes a refrigerated water pipeline 15 connected with a compressor, a water source and a pressure pump, and a drainage tank 16 located below the pipeline. The electronic valve 17 is connected with the PLC control system to automatically adjust the flow of refrigerated water according to the reading of the humidity sensor, and the moisture condenses and drips to the drainage tank 16 outside the wall of the refrigerated water pipeline to complete the dehumidification process. The drainage tank 16 is designed with a mesh plate 18 to prevent solid impurities from blocking and ensure smooth movement of the drying rack trolley. When the entire floor is provided with mesh plates with slope angles, the water droplets condensed on the arc-shaped air flow guide plates and other places can also be quickly guided out. Specifically, when the humidity sensor detects that the humidity is too high, the PLC control system opens the electronic valve 17 to make the dehumidifying device work, and the drainage tank 16 collects the condensed water. The PLC control system reads the temperature and humidity sensors to analyze and adjust the motor output power of the three types of fans, and adjusts the output time through the timer to realize fine regulation and control of the air flow.

[0036] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A pulp wet- web oven comprising an oven body, characterized by: The top of the drying room body is provided with a hot air blower set, which is opposite to the inside of the drying room body, and a plurality of drying racks are arranged in the drying room body, characterized in that: a spherical air flow distribution plate is arranged between the hot air blower set and the drying rack. The inside of the drying room body is provided with a first forced convection fan at a certain angle with the hot air blower set, and a second forced convection fan is arranged opposite to the first forced convection fan, and the first forced convection fan and the second forced convection fan are arranged in a staggered manner in the height and / or horizontal direction.

2. A pulp wet-ends drying house according to claim 1, characterized in that: The first forced convection fan and the second forced convection fan are respectively provided with arc-shaped air flow guide plates opposite to one side of the drying room body, and the arc-shaped air flow guide plates respectively point to the second forced convection fan and the first forced convection fan.

3. A pulp wet- web oven according to claim 1 or 2, characterized in that: The hot air blower set, the first forced convection fan and the second forced convection fan are respectively connected with a motor, and at least one of the motors is electrically connected with a PLC control system.

4. A pulp wet- web oven according to claim 1, characterized in that: The inside of the drying room body is provided with a temperature sensor, a humidity sensor and a timer, and the temperature sensor, the humidity sensor and the timer are electrically connected with a PLC control system.

5. A pulp wet- web oven according to claim 1, characterized in that: The drying room body is also provided with a dehumidifying device, which includes a refrigerated water pipeline connected with a compressor and a water source arranged at the top of the drying room body, a drain groove arranged below the refrigerated water pipeline, an electronic valve arranged in communication with the refrigerated water pipeline, and the electronic valve is electrically connected with a PLC control system.

6. A pulp wet- web oven according to claim 5, characterized in that: The drain groove is provided with a mesh plate.

7. A pulp wet- web oven according to claim 1, characterized in that: The drying rack includes a frame and a grid plate detachably arranged on the frame body, the frame is provided with a slot, and the grid plate is provided with a clamping block matched with the slot.

8. A pulp wet- web oven according to claim 7, characterized in that: The drying rack is provided with a castor with a brake.

9. A pulp wet- web oven according to claim 5, characterized in that: The ground of the drying room body is provided with a slope angle, the slope angle is towards the drain groove, the mesh plate is densely provided with mesh, and a support column is further arranged between the mesh plate and the ground, and the drain groove is communicated to the outside of the drying room body.

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