Tunnel type dryer hot air recycling system

Abstract

The utility model discloses a tunnel type dryer hot air recycling system which comprises a feeding bin, three sets of drying bins and a discharging bin which are sequentially communicated, the three sets of drying bins are sequentially communicated in an end-to-end mode and comprise the first drying bin, the second drying bin and the third drying bin, and transmission rails are arranged in the feeding bin, the drying bins and the discharging bin in a penetrating mode. A first moisture removal fan is arranged above the feeding bin, an inlet of the first moisture removal fan communicates with the interior of the first drying bin through a moisture removal pipeline, a second moisture removal fan is arranged above the discharging bin, and an inlet of the second moisture removal fan communicates with the interiors of the second drying bin and the third drying bin through moisture removal pipelines. And an outlet of the second dehumidifying fan is communicated with the interior of the feeding bin through a heat exchange air pipe. The hot air recycling device has the advantages that airflow which carries heat and is low in humidity can enter airflow circulation again through the feeding bin, so that hot air recycling is achieved, energy is saved, and follow-up drying cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clothes drying, in particular to a hot air recycling system of a tunnel drying machine. Background Art

[0002] Tunnel dryers are mainly used in places such as hotels, schools, and hospitals where a large amount of clothes need to be washed. They evaporate the moisture on the clothes through high-temperature air, thereby achieving the effect of drying the clothes. The tunnel dryers currently used have the disadvantages of serious waste of hot air resources. Utility Model Content

[0003] The utility model aims to provide a hot air recycling system for a tunnel dryer, which can re-enter the airflow carrying heat and low humidity through the feed bin into the airflow circulation again, thereby realizing hot air recycling, achieving energy saving and reducing subsequent drying costs.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A tunnel dryer hot air recycling system, characterized in that it comprises a feed bin, a drying bin and a discharge bin which are connected in sequence, wherein a total of three groups of drying bins are provided, which are connected end to end in sequence, namely a first drying bin, a second drying bin and a third drying bin, wherein a transmission track is provided through each of the feed bin, the drying bin and the discharge bin, a first dehumidification fan is provided above the feed bin, and an inlet of the first dehumidification fan is connected to the interior of the first drying bin through a dehumidification pipe, a second dehumidification fan is provided above the discharge bin, and an inlet of the second dehumidification fan is connected to the interior of the second and third drying bins through a dehumidification pipe, and an outlet of the second dehumidification fan is connected to the interior of the feed bin through a heat exchange duct.

[0006] Preferably, each group of the drying bins includes a reflow zone and a drying zone, the transmission track is arranged in the drying zone, the reflow zone and the drying zone are separated by a sealing plate, the sealing plate is sealed and fixed to the interior of the drying bin on all sides, a top air duct is opened on the top of the sealing plate, a circulating air duct is opened on the bottom, and a circulating fan is arranged on the top of the drying zone.

[0007] Preferably, the circulation fan is installed in the recirculation area through a fan fixing plate, and the top air duct is connected to the air outlet of the circulation fan.

[0008] Preferably, a heat-insulating belly plate is installed on the top of the drying bin in the reflow zone, and heat-insulating cotton is arranged inside the heat-insulating belly plate.

[0009] Preferably, two groups of hot air guide grooves are arranged above the drying area, and the two groups of hot air guide grooves are respectively arranged on both sides of the transmission track. The inlets of the two groups of hot air guide grooves are connected to the top air duct, and the outlets of the two groups of hot air guide grooves are arranged obliquely inward.

[0010] Preferably, a caster adjustment block is provided at the bottom of each group of drying bins.

[0011] Preferably, a heating cavity is provided in the first drying chamber and the second drying chamber below the reflow zone.

[0012] Preferably, the first drying bin, the second drying bin and the third drying bin are provided with a return air duct on one side of the drying area, and the bottom of each return air duct is connected with the bottom of the drying area of ​​the corresponding drying bin, the top of the return air duct of the first drying bin is connected with the first dehumidification fan, and the top of the return air duct of the second drying bin and the third drying bin is connected with the second dehumidification fan.

[0013] Preferably, a steam heater is provided outside the heat exchange duct at the back of the first drying bin and the second drying bin.

[0014] Preferably, thermal insulation cotton is laid in the heating cavity in the reflux zone.

[0015] To sum up, the beneficial effects of the utility model are as follows: the utility model realizes hot air recycling, saves energy, and reduces subsequent drying costs by using heat exchange ducts in the return air ducts of the second drying bin and the third drying bin to re-enter the air flow circulation through the feed bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the front side of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model from a top view;

[0018] Figure 3 It is a structural schematic diagram of a single drying bin in the utility model. DETAILED DESCRIPTION

[0019] The specific implementation manner of the present utility model is further described below in conjunction with the accompanying drawings. This embodiment does not constitute a limitation to the present utility model.

[0020] like Figures 1 to 3A tunnel dryer hot air recycling system is shown, comprising a feed bin 1, a drying bin and a discharge bin 2 connected in sequence. There are three groups of drying bins in total, which are connected end to end in sequence, namely the first drying bin 3, the second drying bin 4 and the third drying bin 5. A transmission track 6 is provided through the feed bin 1, the drying bin and the discharge bin 2. A first dehumidification fan 7 is provided above the feed bin 1, and the inlet of the first dehumidification fan 7 is connected to the interior of the first drying bin 3 through a dehumidification pipe 8. A second dehumidification fan 9 is provided above the discharge bin 2, and the inlet of the second dehumidification fan 9 is connected to the interior of the second drying bin 4 and the third drying bin 5 through a dehumidification pipe 8, and the outlet of the second dehumidification fan 9 is connected to the interior of the feed bin 1 through a heat exchange duct 10.

[0021] Each group of drying bins includes a reflow zone 11 and a drying zone 12. The transmission track 6 is arranged in the drying zone 12. The reflow zone 11 and the drying zone 12 are separated by a sealing plate 13. The sealing plate 13 is sealed and fixed to the inside of the drying bin on all sides. A top air duct 14 is opened on the top of the sealing plate 13, and a circulating air duct 15 is opened on the bottom. A circulating fan 16 is arranged on the top of the drying zone 12, so as to realize the air circulation inside each group of drying bins.

[0022] The circulation fan 16 is installed in the recirculation area 11 through the fan fixing plate 17, and the top air duct 14 is connected with the air outlet of the circulation fan 16. The circulation fan 16 can accelerate the circulation of air flow and improve the overall drying efficiency.

[0023] An insulating belly plate 18 is installed on the top of the drying bin in the reflow zone 11, and a heat-insulating cotton 19 is arranged inside the insulating belly plate 18 to reduce heat loss, thereby improving the overall heat utilization rate.

[0024] Two groups of hot air guide grooves 20 are arranged above the drying area 12. The two groups of hot air guide grooves 20 are respectively arranged on both sides of the transmission track 6. The inlets of the two groups of hot air guide grooves 20 are connected to the top air duct 14, and the outlets of the two groups of hot air guide grooves 20 are arranged obliquely inward.

[0025] A caster adjustment block 21 is provided at the bottom of each drying bin group, and the caster adjustment block 21 can be used to adjust the overall height, so as to facilitate the unified adjustment and installation of multiple drying bin groups.

[0026] A heating cavity 22 is provided in the first drying chamber 3 and the second drying chamber 4 below the recirculation zone 11, so that the first drying chamber 3 and the second drying chamber 4 are always dried with hot air, and the third drying chamber 5 cools the delivered clothes by normal temperature airflow.

[0027] The first drying bin 3, the second drying bin 4 and the third drying bin 5 are provided with a return air duct 23 on one side of the drying area 12. The bottom of each return air duct 23 is connected with the bottom of the drying area 12 of the corresponding drying bin. The top of the return air duct 23 of the first drying bin 3 is connected with the first dehumidification fan 7, and the top of the return air duct 23 of the second drying bin 4 and the third drying bin 5 is connected with the second dehumidification fan 9. The airflow in the return air duct 23 in the first drying bin 3 carries a large amount of moisture, so it is directly discharged through the first dehumidification fan 7, while the airflow in the second drying bin 4 and the third drying bin 5 has a lower moisture content and also carries some heat, so the hot air is recycled through the second dehumidification fan 9 and the heat exchange duct 10, thereby achieving energy saving and reducing subsequent drying costs.

[0028] A steam heater 24 is disposed outside the heat exchange duct 10 at the back of the first drying chamber 3 and the second drying chamber 4 , so as to perform secondary heating on the airflow in the heat exchange duct 10 .

[0029] Insulation cotton 19 is laid in the heating cavity of the reflow zone 11 to reduce heat loss, thereby improving the overall heat utilization rate.

[0030] The utility model realizes hot air recycling by reusing the air carrying heat and low humidity through the feed bin through the heat exchange duct in the return air duct of the second drying bin and the third drying bin, thereby saving energy and reducing subsequent drying costs.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A hot air recycling system for a tunnel dryer, It is characterized in that It includes a feed bin, a drying bin and a discharge bin which are connected in sequence. There are three groups of drying bins in total which are connected end to end in sequence, namely the first drying bin, the second drying bin and the third drying bin. A transmission track is arranged through each of the feed bin, the drying bin and the discharge bin. A first dehumidification fan is arranged above the feed bin, and the inlet of the first dehumidification fan is connected to the interior of the first drying bin through a dehumidification pipe. A second dehumidification fan is arranged above the discharge bin, and the inlet of the second dehumidification fan is connected to the interior of the second and third drying bins through a dehumidification pipe, and the outlet of the second dehumidification fan is connected to the interior of the feed bin through a heat exchange duct.

2. A tunnel dryer hot air recycling system according to claim 1, Features: Each group of the drying bins includes a reflow zone and a drying zone, the transmission track is arranged in the drying zone, the reflow zone and the drying zone are separated by a sealing plate, the sealing plate is sealed and fixed to the inside of the drying bin on all sides, a top air duct is opened on the top of the sealing plate, a circulating air duct is opened on the bottom, and a circulating fan is arranged on the top of the drying zone.

3. A tunnel dryer hot air recycling system according to claim 2, Features: The circulating fan is installed in the recirculation area through a fan fixing plate, and the top air duct is communicated with the air outlet of the circulating fan.

4. A tunnel dryer hot air recycling system according to claim 2, Features: A heat-insulating belly plate is installed on the top of the drying bin in the reflow zone, and heat-insulating cotton is arranged inside the heat-insulating belly plate.

5. A tunnel dryer hot air recycling system according to claim 2, Features: Two groups of hot air guide grooves are arranged above the drying area, and the two groups of hot air guide grooves are respectively arranged on both sides of the transmission track. The inlets of the two groups of hot air guide grooves are connected to the top air duct, and the outlets of the two groups of hot air guide grooves are arranged obliquely inward.

6. A tunnel dryer hot air recycling system according to claim 1, Features: A caster adjustment block is provided at the bottom of each group of drying bins.

7. A hot air recycling system for a tunnel dryer according to claim 1, Features: A heating cavity is arranged below the reflow zone in the first drying chamber and the second drying chamber.

8. A hot air recycling system for a tunnel dryer according to claim 1, Features: The first drying bin, the second drying bin and the third drying bin are provided with a return air duct on one side of the drying area, and the bottom of each return air duct is connected with the bottom of the drying area of ​​the corresponding drying bin, the top of the return air duct of the first drying bin is connected with the first dehumidification fan, and the top of the return air duct of the second drying bin and the third drying bin is connected with the second dehumidification fan.

9. A hot air recycling system for a tunnel dryer according to claim 1, Features: A steam heater is arranged outside the heat exchange duct at the back of the first drying bin and the second drying bin.

10. A hot air recycling system for a tunnel dryer according to claim 7, Features: In the reflux zone, thermal insulation cotton is laid at the heating cavity.

Images