Energy-saving and environment-friendly drying equipment

Abstract

The utility model provides energy-saving and environment-friendly drying equipment which comprises a drying chamber, the drying chamber comprises a drying cavity defined by a cavity wall, the cavity wall is provided with an air inlet, an air outlet, a feeding port and a discharging port, a conveying unit connected with the feeding port and the discharging port is arranged in the drying chamber, and the conveying unit limits a zigzag conveying path; the air deflectors are arranged on the cavity wall at intervals; in the direction from the air inlet to the air outlet, every two adjacent air guide plates are arranged in a staggered mode, the projections of the air guide plates are partially overlapped, the cavity wall and the multiple air guide plates jointly define a zigzag air guide path, and the air guide path and the conveying path are at least partially overlapped; an inlet of the evaporator is communicated with the air outlet; an outlet of the condenser is communicated with the air inlet, an air outlet of the evaporator is communicated with an air inlet of the condenser, a condensing agent outlet of the condenser is communicated with a condensing agent inlet of the evaporator through the throttling element, and a condensing agent outlet of the evaporator is connected with a condensing agent inlet of the condenser through the compressor. And the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying equipment technical field especially relates to a kind of energy-saving and environment-friendly drying equipment. BACKGROUND

[0002] Drying is an important step in the printing and dyeing process of textile, for removing moisture in textile, to ensure uniform and firm dyeing. The common drying method is to heat water to produce steam first, the steam is transported to the heat exchanger of dryer through pipeline, the normal temperature air from outside exchanges heat with steam in the heat exchanger to form high-temperature air, the high-temperature air is blown to the surface of textile, to take away the moisture therein for drying, the high-temperature and humid air produced is sent into tail gas pipe by induced draft fan and discharged into the atmosphere after treatment, the above drying method has the problems of low heat utilization rate and high-temperature condensate water discharge, in addition, the high-temperature and humid air after drying is discharged into the atmosphere, so that the heat in the high-temperature and humid air is not effectively utilized, resulting in heat waste, the high-temperature and humid air needs further treatment before being discharged into the atmosphere, causing high drying cost and environmental pollution. SUMMARY

[0003] The utility model provides a kind of energy-saving and environment-friendly drying equipment according to the problems existing in the prior art, utilize evaporator heat absorption to make full use of the heat in the wet and hot air flowing from drying chamber, utilize the heat release principle of compressor compression gas to heat the dry and cold air obtained by evaporator cooling and dehumidification, form dry hot air into drying chamber to dry material, energy-saving and environment-friendly, avoid existing wet and hot air direct discharge into the atmosphere, and dry hot air is guided in drying cavity by multiple air deflectors, flow through the surface of material along conveying path, improve drying efficiency.

[0004] The utility model provides a kind of energy-saving and environment-friendly drying equipment, comprising: drying chamber, the drying chamber includes the drying cavity formed by cavity wall, the cavity wall is equipped with the air inlet and air outlet being communicated with the drying cavity, the cavity wall is equipped with feed inlet and discharge port, the conveying unit that links the feed inlet and the discharge port is equipped in the drying chamber, the conveying unit defines zigzag conveying path;Multiple air deflector, interval is equipped in the cavity wall, in the direction from the air inlet to the air outlet, two adjacent the air deflector misregistration arrangement and projection portion overlap, the cavity wall and multiple the air deflector jointly define zigzag air deflector path, one end of the air deflector path is communicated with the air inlet, the other end of the air deflector path is communicated with the air outlet, the air deflector path and the conveying path at least partially overlap;Evaporator, the inlet of the evaporator is communicated with the air outlet;Condenser, the outlet of the condenser is communicated with the air inlet, the air outlet of the evaporator is communicated with the air inlet of the condenser, the condenser outlet is communicated with the condenser inlet of the evaporator by throttling element, the condenser outlet of the evaporator is connected with the condenser inlet by compressor.

[0005] As an embodiment, the cavity wall includes two side walls oppositely arranged along a first direction, two end walls connected to both ends of the two side walls and oppositely arranged along a second direction, the air outlet and the air inlet are arranged on the same side wall, the feed inlet and the discharge port are arranged on the two end walls respectively, and multiple air deflectors are alternately arranged on the two side walls.

[0006] As an embodiment, multiple guide plates are arranged at the corners of the air deflector path, the guide plates include a first section and a second section connected together, the plate surface of the first section forms a predetermined angle with the plate surface of the second section, the first sections of multiple guide plates are arranged at intervals along a first direction, and the second sections of multiple guide plates are arranged at intervals along a second direction.

[0007] As an embodiment, a guide plate is arranged in the drying cavity near the end where the air deflector is connected to the cavity wall, one end of the guide plate is connected to the cavity wall, and the other end of the guide plate is connected to the air deflector.

[0008] As an embodiment, the conveying unit includes multiple conveying rollers misarranged to form two rows along the direction from the feed inlet to the discharge port, the projections of multiple conveying rollers on one of the side walls are arranged at equal intervals with a first interval, each conveying roller in each row of conveying rollers is arranged at equal intervals with a second interval, and the second interval is equal to twice the first interval; the air deflector is located between two adjacent conveying rollers.

[0009] As an implementation form, the air-drying cavity is provided with an air-distribution plate near the air inlet.

[0010] As an implementation form, one end of the air-distribution plate is hinged to the cavity wall or the air deflector, and the cavity wall or the air deflector is provided with a driving member for driving the air-distribution plate to swing around the hinge point between the air-distribution plate and the cavity wall.

[0011] As an implementation form, the direction of the conveying path is opposite to the direction of the air-deflection path.

[0012] As an implementation form, the evaporator is provided with a condensate outlet or a condensate collection groove.

[0013] As an implementation form, the compressor is a magnetic suspension compressor.

[0014] As an implementation form, a filter is arranged between the air outlet and the inlet of the evaporator.

[0015] As an implementation form, a fan is arranged between the air outlet of the evaporator and the air inlet of the condenser.

[0016] As an implementation form, a fan is arranged between the air outlet and the inlet of the evaporator, or a fan is arranged between the air inlet and the outlet of the condenser.

[0017] Compared with the prior art, the energy-saving drying equipment has the following advantages:

[0018] The low-temperature and low-pressure liquid condensate absorbs heat in the wet and hot air flowing out of the drying chamber in the evaporator, so as to achieve the effect of cooling and dehumidifying the wet and hot air. When the compressor compresses the low-pressure gaseous condensate, a large amount of heat is generated to heat the dry and cold air from the evaporator in the condenser to form dry and hot air, so as to replace the traditional steam or heat-conducting oil to heat the air, save energy and protect the environment, avoid direct discharge of the wet and hot air into the atmosphere, and guide the dry and hot air in the drying cavity through the material surface along the conveying path through the multiple air deflectors, thereby improving the drying efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure schematic view of the energy-saving drying equipment according to an embodiment of the present application;

[0020] Figure 2 is a structure schematic view of the drying chamber according to an embodiment of the present application;

[0021] Figure 3 is Figure 1 a structure schematic view of an evaporative condensation circulation loop.

[0022] Fig. No. Drying chamber 1; drying cavity 11; side wall 111; end wall 112; feeding port 12; discharging port 13; air outlet 14; air inlet 15; air deflector 16; air uniformizing plate 17; driving member 18; flow guide plate 19; bent section 191; conveying roller 21, 22; evaporator 3; condensate outlet 31; condenser 4; compressor 5; throttling element 6; fan 7; filter 8. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and specific embodiments.

[0024] As Figures 1-3 shown, the utility model provides a kind of energy-saving and environment-friendly drying equipment, can be used to the material of flexible base material class is dried, for example, the drying of fabric.It is specifically, energy-saving and environment-friendly drying equipment includes drying chamber 1, the drying chamber 1 includes the drying cavity 11 formed by cavity wall, the cavity wall is equipped with the air inlet 15 and air outlet 14 that communicate with the drying cavity 11, the cavity wall is equipped with feeding port 12 and discharging port 13, the conveying unit that links the feeding port 12 and the discharging port 13 is equipped in the drying chamber 1, the conveying unit defines the tortuous conveying path for transmission material;Multiple air deflectors 16, interval are equipped in the cavity wall, in the direction from the air inlet 15 to the air outlet 14, two adjacent air deflectors 16 are misaligned arrangement and projection portion overlaps, the cavity wall and multiple air deflectors 16 jointly define the tortuous air guide path, one end of the air guide path communicates with the air inlet 15, another end of the air guide path communicates with the air outlet 14, the air guide path and the conveying path at least partially overlap;Evaporator 3, the import of the evaporator 3 communicates with the air outlet 14;Condenser 4, the outlet of the condenser 4 communicates with the air inlet 15, the gas outlet of the evaporator 3 communicates with the gas inlet of the condenser 4, the condensing agent outlet of the condenser 4 is communicated with the condensing agent import of the evaporator 3 by throttling element 6, the condensing agent outlet of the evaporator 3 is connected with the condensing agent import of the condenser 4 by compressor 5.Utilize the heat of low-temperature low-pressure liquid condensing agent in evaporator 3 to absorb the heat in the wet hot air that flows from drying chamber 1 to reach the effect of dehumidification and cooling to wet hot air, utilize the large amount of heat generated when compressor 5 compresses low-pressure gaseous condensing agent to heat dry cold air from evaporator 3 in condenser 4 to form dry hot air, to replace traditional steam or heat-conducting oil to heat air, energy saving and environmental protection, reduce equipment cost and energy consumption, avoid existing wet hot air direct emission to atmosphere, and dry hot air is guided in drying cavity 11 by multiple air deflectors 16, along conveying path flows through material surface, improves drying efficiency.

[0025] The working principle of the energy-saving and environment-friendly drying equipment is as follows: the liquid condensate flowing out from the condensate outlet of the condenser 4 and passing through the throttling element 6 is throttled and depressurized, and becomes low-temperature and low-pressure liquid condensate, which exchanges heat with the wet hot air entering the evaporator 3 from the air outlet 14 of the drying chamber 1, and is heated by the heat in the wet hot air to form low-pressure gaseous condensate, the wet hot air is discharged and becomes dry cold air after entering the condenser 4, and the low-pressure gaseous condensate enters the compressor 5 from the condensate outlet of the evaporator 3, and is compressed into high-temperature and high-pressure gaseous condensate in the compressor 5, the high-temperature and high-pressure gaseous condensate enters the condenser 4 and is discharged and condensed into high-pressure liquid, the heat discharged by the gaseous condensate can heat the dry cold air entering the condenser 4 to form dry hot air, the dry hot air enters the drying chamber 1 from the air inlet 15, and the dry hot air flows through the conveying unit under the guidance of the guide plate 19 and flows to the surface of the material, and the material is dried and becomes wet hot air, which enters the evaporator 3 from the air outlet 14 and exchanges heat with the low-temperature and low-pressure liquid condensate, and the cycle is continuously repeated.

[0026] The design of the zigzag conveying path can effectively increase the effective length of the material in the drying chamber, thereby improving the utilization rate of the drying chamber. The zigzag conveying path can also force multiple collisions and mixing between the hot air and the material, increasing the contact area and time of heat transfer, thereby improving the efficiency of heat transfer. By designing a reasonably zigzag conveying path, the residence time of the material in the drying chamber can be prolonged, maximizing exposure to dry hot air, ensuring that the material can be fully dried. At the same time, the staggered arrangement of the air guide plates can disrupt the straight-line motion of the airflow, causing it to make multiple turns and turbulent flow, thereby forming a more uniform airflow distribution. Turbulence can increase the contact area and contact time between hot air and material, thereby enhancing heat transfer. The air guide path provides a channel for dry hot air, and the partial overlap of the zigzag conveying path and the air guide path increases the contact area between the material and the hot air, while the staggered arrangement of the air guide plates allows the hot air to penetrate more fully into every corner of the material, maximizing the contact area between the material and the hot air, and improving the efficiency of heat transfer. The zigzag conveying path and the air guide plates work together to form strong turbulence in the drying chamber, promoting the mixing of dry hot air and material, accelerating water evaporation, and maximizing heat transfer. In addition, the staggered arrangement of the air guide plates and the zigzag conveying path work together to make the temperature field in the drying chamber more uniform, avoiding local overheating or overcooling.

[0027] Compared with the traditional drying method, the present application can improve the heat transfer efficiency in a shorter time by combining the above-mentioned technologies, improve the uniformity and stability of the drying process, and effectively avoid over-drying or insufficient drying of the material, thereby improving the quality and consistency of the product. At the same time, energy consumption is reduced, and environmental pollution is reduced.

[0028] To form a closed space inside the drying chamber 1, improve the heat preservation effect and avoid leakage of contaminated gas, sealing structures (not shown) are provided at the inlet 12 and outlet 13. In addition, the inlet and outlet 14 of the evaporator 3 are connected by a return air duct, the outlet of the condenser 4 is connected to the air inlet 15 by an air inlet duct, the outlet of the evaporator 3 and the inlet of the condenser 4 are connected by a ventilation duct, the condenser 4 condenser outlet is connected to the evaporator 3 condenser inlet by a first condenser channel, the throttling element 6 is provided in the first condenser channel, the evaporator 3 condenser outlet is connected to the condenser 4 condenser inlet by a second condenser channel, and the compressor 5 is provided in the second condenser channel. To facilitate maintenance and management, the energy-saving and environmentally friendly drying equipment also has an equipment room, and the condenser 4, evaporator 3 and compressor 5 are located in the equipment room. To reduce the air flow path, the equipment room is located on the side of the drying chamber 1 provided with the air inlet 15, and the drying chamber 1 and the equipment room can be spaced apart, or they can share a side wall 111. Of course, the equipment room can also not be provided, and the condenser 4, evaporator 3 and compressor 5 can be provided outside the side wall of the drying chamber 1 or on the ground. The throttling element 6 can be an expansion valve.

[0029] As Figures 1-2As shown, in the present embodiment, the cavity wall comprises two side walls 111 oppositely arranged along a first direction, two end walls 112 connected to two ends of the two side walls 111 and oppositely arranged along a second direction, the air outlet 14 and the air inlet 15 are arranged on the same side wall 111, the feeding port 12 and the discharging port 13 are arranged on the two end walls 112 respectively, and a plurality of air deflectors 16 are alternately arranged on the two side walls 111. Such arrangement makes the conveying path and the air guiding path have the largest possible overlapping area, improves the drying efficiency, and does not affect the stability of feeding and discharging due to the large air flow fluctuation at the air inlet 15 and the air outlet 14. Dry hot air enters the drying chamber 1 from the air inlet 15, flows through the conveying unit under the guidance of the plurality of air deflectors 16, blows to the material on the conveying unit, dries the material, and the humid hot air flows out of the air outlet 14 and enters the evaporator 3. In other embodiments, the air outlet 14 and the air inlet 15 can not be arranged on the same side wall 111, one of the air outlet 14 and the air inlet 15 can be arranged on the end wall 112, and the other can be arranged on the side wall 111, or the air outlet 14 and the air inlet 15 are arranged on the two end walls 112 respectively and are arranged separately from the feeding port 12 and the discharging port 13. In other embodiments, the feeding port 12 and the discharging port 13 can not be arranged on the two end walls 112, one of the feeding port 12 and the discharging port 13 can be arranged on the end wall 112, and the other can be arranged on the side wall 111, or the feeding port 12 and the discharging port 13 are arranged on the same side wall 111 or the two side walls 111. The specific arrangement positions of the air outlet 14, the air inlet 15, the feeding port 12 and the discharging port 13 are not limited, as long as the conveying path and the air guiding path have a larger overlapping area. In other embodiments, the air deflectors 16 are not limited to be arranged on the side wall 111, but can also be arranged on the end wall 112 to guide the dry hot air to uniformly blow over the surface of the material.

[0030] As shown, Figures 1-2 In the present embodiment, the direction of the conveying path is opposite to the direction of the air guiding path. The air inlet 15 is arranged near one end of the discharging port 13, and the air outlet 14 is arranged near one end of the feeding port 12, which is beneficial to improve the drying efficiency. The air inlet 15 and the air outlet 14 are located at two ends of the same side wall 111, and the feeding port 12 and the discharging port 13 are arranged near the side wall 111 which is not provided with the air inlet 15.

[0031] As shown, Figures 1-2As shown, in the present embodiment, the conveying unit comprises a plurality of conveying rollers (21, 22) arranged in two rows in the direction from the feeding port 12 to the discharging port 13, the material P to be dried is wound on the conveying rollers (21, 22) in sequence, the conveying rollers (21, 22) extend in a direction perpendicular to the first direction and the second direction, the projections of the plurality of conveying rollers on one of the side walls 111 are arranged in a row at a first interval, the conveying rollers in each row are arranged at a second interval, the second interval is equal to twice the first interval, which reasonably utilizes the space of the drying chamber 1, so that as many materials as possible are arranged in the drying chamber 1, and the heat in the hot air is fully utilized, and the air deflectors 16 are located between adjacent two conveying rollers. The dry hot air entering the drying chamber 1 from the air inlet 15 flows through the surface of the material on each conveying roller in sequence under the guidance of the plurality of air deflectors 16, thereby improving the drying efficiency. In other embodiments, the conveying unit can not be conveying rollers, for example, the conveying unit comprises a plurality of conveying wheels / conveying rollers arranged in the second direction, a conveying belt / conveying chain connecting the plurality of conveying wheels / conveying rollers, and the structure of the conveying unit can be flexibly set according to the type of the material to be dried, which is not limited to the above examples.

[0032] As shown, Figure 2 To guide the hot air passing through the corner and ensure that the hot air uniformly blows over the surface of the material, a plurality of air deflectors 19a are arranged at the corner of the air guide path, the air deflectors 19a comprise a first segment 191 and a second segment 192 connected together, the plate surface of the first segment 191 and the plate surface of the second segment 192 form a predetermined angle, the first segments 191 of the plurality of air deflectors 19 are arranged at intervals in the first direction, and the second segments 192 of the plurality of air deflectors 19 are arranged at intervals in the second direction. The first segment 191 and the second segment 192 can be directly connected together, or the first segment 191 and the second segment 192 are connected through a corner segment, which can be an arc surface or an inclined surface. The cross-sectional shape of the air deflector 19 can be L-shaped, arc-shaped or V-shaped, etc. Preferably, the first segments 191 of the plurality of air deflectors 19 are equally spaced in the first direction, and the second segments 192 of the plurality of air deflectors 19 are equally spaced in the second direction, and the second segment 192 is located between adjacent two conveying rollers (21, 22).

[0033] As shown, Figure 2 As shown, the drying cavity 11 is provided with an air deflector 19b at one end close to the connection between the air deflector 16 and the cavity wall, one end of the air deflector 19b is connected to the cavity wall, the air deflector 19b is connected to the nearest side wall 111, and the other end of the air deflector 19b is connected to the air deflector 16. The flow path of the hot air is guided so that the hot air blows towards the surface of the material.

[0034] As shown, Figure 2As shown, adjacent air guide plates 16 are arranged with multiple conveyor rollers (21, 22) spaced apart. To ensure that the hot, dry air entering the drying chamber 1 from the air inlet 15 is evenly blown onto the material on the multiple conveyor rollers (21, 22), a uniform air distribution plate 17 is provided in the drying chamber 11 near the air inlet 15. The uniform air distribution plate 17 has multiple ventilation holes spaced apart. The uniform air distribution plate 17 faces the multiple conveyor rollers (21, 22) in a first direction. This arrangement ensures that the hot, dry air entering the drying chamber 1 from the air inlet 15 is blown onto the material on each roller as evenly as possible. Preferably, the uniform air distribution plate 17 is inclined. To enhance the airflow rate within the drying chamber 1 and adjust the air guide angle to ensure uniform entry of hot drying air, the air distribution plate 17 is configured to deflect. Specifically, one end of the air distribution plate 17 is hinged to the cavity wall or the air guide plate 16. The cavity wall or the air guide plate 16 is equipped with a driving member 18 that drives the air distribution plate 17 to swing around the hinge point between the air distribution plate 17 and the cavity wall. The swing angle of the air distribution plate 17 is adjusted by the extension and retraction of the driving member 18. The driving member 18 can be a hydraulic cylinder, a pneumatic cylinder, a lead screw, etc. The driving member 18 can operate continuously or intermittently. Preferably, to facilitate the determination of the working time of the drive unit 18 and the adjustment of the swing angle of the air distribution plate 17, a wind speed sensor 20 is installed in the drying chamber 1 near each conveying roller (21, 22) to detect the wind speed flowing through each conveying roller (21, 22) in real time. The wind speed sensor 20 and the drive unit 18 are electrically connected to the controller (not shown). Each wind speed sensor 20 transmits the wind speed signal detected flowing through each conveying roller (21, 22) to the controller. When the wind speed flowing through a number of conveying rollers (21, 22) is significantly lower, the controller controls the drive unit 18 to adjust the swing angle of the air distribution plate 17 so that the drying hot air blows evenly over the material on each conveying roller (21, 22).

[0035] like Figure 1 As shown, the evaporator 3 is equipped with a condensate outlet 31 or a condensate collection tank. The dry hot air entering the drying chamber 1 from the air inlet 15 dries the material and becomes humid air. The humid air flows from the air outlet 14 into the evaporator 3 to cool and generate condensate. The condensate can be discharged from the evaporator 3 through the condensate outlet 31 or enter the condensate collection tank. The condensate may contain a small amount of organic matter. The condensate can be filtered and reused.

[0036] The compressor 5 is preferably a magnetic levitation compressor 5, which has advantages such as high efficiency, energy saving and long service life.

[0037] like Figure 1As shown, a filter 8 is provided between the air outlet 14 and the inlet of the evaporator 3. The filter 8 can effectively filter out impurities carried in the hot and humid air, preventing impurities in the hot and humid air from entering the drying chamber 1 through the evaporator 3 and condenser 4, thus avoiding adverse effects on the quality of the materials. The filter 8 can also be located between the air outlet of the evaporator 3 and the air inlet of the condenser 4, or it can be located between the outlet of the condenser 4 and the air inlet 15. One or more filters 8 can be installed, and their number and specific location are selected according to actual needs.

[0038] like Figure 1 As shown, a fan 7 is installed between the air outlet 14 of the evaporator 3 and the air inlet 15 of the condenser 4. The fan 7 enhances the flow rate of the drying cold air between the evaporator 3 and the condenser 4, indirectly accelerating the gas circulation efficiency within the drying chamber 1. Alternatively, the fan 7 can be located between the air outlet 14 and the inlet of the evaporator 3, or between the air inlet 15 and the outlet of the condenser 4. One or more fans 7 can be installed, and their placement is selected based on actual needs.

[0039] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, they should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. An energy-saving and environmentally friendly drying equipment, characterized in that, The dryer comprises: a drying chamber, which comprises a drying cavity formed by a cavity wall, the cavity wall is provided with an air inlet and an air outlet which communicate with the drying cavity, the cavity wall is provided with an inlet and an outlet, and a conveying unit is arranged in the drying chamber and connects the inlet and the outlet, the conveying unit defines a zigzag conveying path; a plurality of air deflectors are arranged at intervals on the cavity wall, and two adjacent air deflectors are arranged in staggered manner and partially overlap in projection in the direction from the air inlet to the air outlet, the cavity wall and the plurality of air deflectors jointly define a zigzag air guide path, one end of the air guide path communicates with the air inlet, and the other end of the air guide path communicates with the air outlet, and the air guide path at least partially overlaps with the conveying path; an evaporator, an inlet of the evaporator communicates with the air outlet; a condenser, an outlet of the condenser communicates with the air inlet, an air outlet of the evaporator communicates with an air inlet of the condenser, a condenser outlet of the condenser communicates with a condenser inlet of the evaporator through a throttling element, and a condenser outlet of the evaporator is connected to the condenser inlet of the condenser through a compressor.

2. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that, The cavity wall comprises two side walls arranged opposite to each other in a first direction, two end walls connected to two ends of the two side walls and arranged opposite to each other in a second direction, the air inlet and the air outlet are arranged on the same side wall, the inlet and the outlet are arranged on the two end walls respectively, and the air deflectors are alternately arranged on the two side walls.

3. The energy-saving and environment-friendly drying apparatus according to claim 2, characterized in that, A plurality of guide plates are arranged at intervals at the corners of the air guide path, the guide plates comprise a first segment and a second segment connected to each other, a plate surface of the first segment forms a predetermined angle with a plate surface of the second segment, the first segments of the plurality of guide plates are arranged at intervals in the first direction, and the second segments of the plurality of guide plates are arranged at intervals in the second direction.

4. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that, A guide plate is arranged in the drying cavity and close to an end of the air deflector connected to the cavity wall, one end of the guide plate is connected to the cavity wall, and the other end of the guide plate is connected to the air deflector.

5. The energy-saving and environment-friendly drying apparatus according to claim 2, characterized in that, The conveying unit comprises a plurality of conveying rollers arranged in staggered manner to form two rows in the direction from the inlet to the outlet, the projections of the plurality of conveying rollers on one of the side walls are arranged in one row at a first interval, and each of the conveying rollers in each row is arranged at a second interval, and the second interval is twice the first interval. The air deflector is located between two adjacent conveying rollers.

6. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that, A uniform air deflector is arranged in the drying cavity and close to the air inlet, and the uniform air deflector is provided with a plurality of air vents at intervals.

7. The energy-saving and environment-friendly drying apparatus according to claim 6, characterized in that, One end of the uniform air deflector is hinged to the cavity wall or the air deflector, and the cavity wall or the air deflector is provided with a driving member for driving the uniform air deflector to swing around the hinge point of the uniform air deflector and the cavity wall.

8. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that, The direction of the conveying path is opposite to the direction of the air guide path.

9. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that, The evaporator is provided with a condensate outlet or a condensate collection tank; and / or, the compressor is a magnetic suspension compressor; and / or, a filter is arranged between the air outlet and the inlet of the evaporator.

10. The energy-saving and environment-friendly drying apparatus according to claim 1, characterized in that: A fan is arranged between the air outlet of the evaporator and the air inlet of the condenser. And / or, the air outlet and the inlet of the evaporator are provided with a fan, or the air inlet and the outlet of the condenser are provided with a fan.

Images