A drying device for recycling waste glass

Abstract

This utility model discloses a drying device for waste glass recycling, including a frame with a drying chamber mounted on it. The drying chamber has a feed inlet at the top and a discharge outlet at the bottom. Inside the drying chamber is a glass conveying mechanism for transporting waste glass. This mechanism includes multiple layers of inclined conveyor belts supported by rollers within the drying chamber. Adjacent conveyor belts have opposite transport directions, with the feed end of the uppermost conveyor belt located below the feed inlet and the discharge end of the lowermost conveyor belt located above the discharge outlet. The side walls of the drying chamber have air inlets corresponding to each conveyor belt, and the bottom of the drying chamber has an air outlet. A hot air circulation mechanism for providing hot air for drying the glass is located between the air inlets and outlets. This utility model features high hot air utilization and good drying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of waste glass recycling equipment, specifically to a drying device for waste glass recycling. Background Technology

[0002] Recycling and reusing waste glass is an important way to reduce resource consumption and environmental pollution. During the recycling process, broken glass fragments typically need to be washed to remove surface impurities, but these fragments retain a large amount of moisture. Directly feeding these water-containing glass fragments into a furnace for melting will lead to the following problems:

[0003] Increased energy consumption: The evaporation of water requires the absorption of a large amount of heat, which significantly increases the energy consumption of the furnace;

[0004] Product quality decline: Moisture vaporizes at high temperatures and easily forms bubbles, leading to pores or cracks in glass products;

[0005] Increased equipment wear and tear: Moisture may corrode the inner wall of the furnace, shortening the equipment's lifespan.

[0006] In existing technologies, cleaned waste glass fragments are typically dried using glass drying equipment. However, existing glass drying equipment has the following main drawbacks:

[0007] Low hot air utilization: Most devices adopt a unidirectional hot air flow design, and the hot air is directly discharged after passing through the drying area once, resulting in serious heat waste;

[0008] Insufficient drying efficiency: Single-layer conveying or static stacking methods result in uneven heating of glass fragments, long drying time, and high moisture residue. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a drying device for waste glass recycling, so as to solve the problems of low hot air utilization and insufficient drying efficiency mentioned in the background art.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0011] A waste glass recycling drying device includes a frame with a drying chamber mounted on it. The drying chamber has a feed inlet at its top and a discharge outlet at its bottom. Inside the drying chamber is a glass conveying mechanism for transporting waste glass. This mechanism includes multiple layers of inclined conveyor belts supported by rollers within the drying chamber. Adjacent conveyor belts have opposite transport directions, with the feed end of the uppermost conveyor belt located below the feed inlet and the discharge end of the lowermost conveyor belt located above the discharge outlet. The side walls of the drying chamber have air inlets corresponding to each conveyor belt, and the bottom of the drying chamber has an air outlet. A hot air circulation mechanism for providing hot air for drying the glass is located between the air inlets and outlets. The device also includes a PLC controller, whose output is connected to the controlled ends of the conveyor belts and the hot air circulation mechanism.

[0012] Preferably, the conveyor belt has an inclination angle of 5°-15° and the surface of the conveyor belt is provided with anti-slip texture.

[0013] Preferably, the hot air circulation mechanism includes a main hot air duct connected to the air outlet, and the other end of the main hot air duct is connected to each air inlet through branch hot air ducts; the main hot air duct is provided with a bag filter for dust removal, a dehumidifier for dehumidification, a heating component for heating, and an induced draft fan for providing power for hot air circulation in sequence along the air flow direction; the output terminal of the PLC controller is connected to the controlled terminals of the dehumidifier, the heating component, and the induced draft fan respectively.

[0014] Preferably, the heating assembly includes a wind box body installed on the main hot air duct. Inside the wind box body, several rows of electric heating tubes are arranged sequentially along the airflow direction. Each electric heating tube is arranged perpendicular to the airflow direction and adjacent rows of electric heating tubes are staggered. The controlled end of the electric heating tube is connected to the output end of the PLC controller.

[0015] Preferably, a temperature sensor is installed on the main hot air duct near the air inlet for monitoring the inlet air temperature; a humidity sensor is installed on the main hot air duct near the air outlet for monitoring the outlet air humidity; and the input terminal of the PLC controller is connected to the output terminals of the temperature sensor and the humidity sensor, respectively.

[0016] Preferably, a lifting feeder for feeding is provided on one side of the drying box, with the top discharge end of the lifting feeder corresponding to the feed inlet, and the controlled end of the lifting feeder connected to the output end of the PLC controller.

[0017] Preferably, a screw conveyor is provided below the drying box, with the inlet and outlet of the screw conveyor corresponding to each other, and the controlled end of the screw conveyor connected to the output end of the PLC controller.

[0018] Preferably, a control box is provided on the frame, and a control panel is provided on the control box. The output terminal of the control panel is connected to the input terminal of the PLC controller, and the PLC controller is located inside the control box.

[0019] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0020] This invention, through its glass conveying mechanism, not only extends the residence time of waste glass fragments in the drying chamber and improves the drying effect, but also allows the waste glass fragments to naturally tumble under gravity, achieving uniform heating in conjunction with the hot air circulation mechanism. The hot air circulation mechanism also reduces heat emissions, and when combined with a bag filter, dehumidifier, and temperature control, it effectively saves costs and resources. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] The components include: 1. Drying box, 11. Feed inlet, 12. Discharge outlet, 13. Air inlet, 14. Air outlet, 2. Glass conveying mechanism, 21. Conveyor belt, 3. Hot air circulation mechanism, 31. Main hot air duct, 32. Branch hot air duct, 33. Bag dust collector, 34. Dehumidifier, 35. Heating component, 351. Air box body, 352. Electric heating tube, 36. Exhaust fan, 37. Temperature sensor, 38. Humidity sensor, 4. Lifting and feeding machine, 5. Screw conveyor. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] A drying device for recycling waste glass, combined with Figure 1 As shown, the system includes a frame on which a drying chamber 1, a hot air circulation mechanism 3, and a control box are mounted. The drying chamber 1 contains a glass conveying mechanism 2 for conveying waste glass. The hot air circulation mechanism 3 is connected to the drying chamber 1 and provides circulating hot air to dry the waste glass conveyed within. The control box contains a control panel, the output of which is connected to a PLC controller. The PLC controller is located inside the control box, and its output is connected to the controlled terminals of the glass conveying mechanism 2 and the hot air circulation mechanism 3, respectively, thereby achieving automatic control of the drying process.

[0025] The drying chamber 1 has a feed inlet 11 at the top and a discharge outlet 12 at the bottom. The glass conveying mechanism 2 includes multiple layers of inclined conveyor belts 21 arranged from top to bottom. The conveyor belts 21 are supported inside the drying chamber 1 by rollers. Adjacent conveyor belts 21 have opposite conveying directions, forming a zigzag conveying path. The feed end of the uppermost conveyor belt 21 is located below the feed inlet 11, and the discharge end of the lowermost conveyor belt 21 is located above the discharge outlet 12. The inclination angle of the conveyor belts 21 is 5°-15°. By using multiple layers of inclined conveyor belts 21, the waste glass fragments can be naturally tumbled under gravity, achieving uniform heating in conjunction with the hot air circulation mechanism 3. The surface of the conveyor belts 21 is provided with anti-slip textures to ensure stable conveying of waste glass fragments.

[0026] The drying chamber 1 has air inlets 13 on its side walls, which are arranged opposite to each conveyor belt 21. An air outlet 14 is located at the bottom of the drying chamber 1. A hot air circulation mechanism 3 is located between the air outlet 14 and the air inlets 13. The hot air circulation mechanism 3 includes a main hot air duct 31, one end of which is connected to the air outlet 14, and the other end of which is connected to each air inlet 13 via a branch hot air duct 32. Along the airflow direction, a bag filter 33, a dehumidifier 34, a heating assembly 35, and an induced draft fan 36 are sequentially arranged on the main hot air duct 31. The bag filter 33 is used to remove dust from the outlet air; the dehumidifier 34 is used to dehumidify the outlet air; the heating assembly 35 is used to heat the outlet air; and the induced draft fan 36 provides power for the hot air circulation.

[0027] The heating assembly 35 includes a fan housing 351 mounted on the main hot air duct 31. Inside the fan housing 351, several rows of electric heating tubes 352 are arranged sequentially along the airflow direction. Each electric heating tube 352 is arranged perpendicular to the airflow direction, and adjacent rows of electric heating tubes 352 are staggered. When the air passes through the fan housing 351, it can be heated by the electric heating tubes 352.

[0028] A temperature sensor 37 and a humidity sensor 38 are installed on the main hot air duct 31. The temperature sensor 37 is located near the air inlet 13 and is used to monitor the air inlet temperature. The humidity sensor 38 is located near the air outlet 14 and is used to monitor the air outlet humidity.

[0029] A lifting feeder 4 is installed on one side of the drying chamber 1. The top discharge end of the lifting feeder 4 corresponds to the feed inlet 11. The lifting feeder 4 is used to feed waste glass fragments through the feed inlet 11 onto the uppermost conveyor belt 21. A screw conveyor 5 is installed below the drying chamber 1. The feed end of the screw conveyor 5 corresponds to the discharge outlet 12. The screw conveyor 5 is used to output the dried waste glass fragments.

[0030] The input terminal of the PLC controller is connected to the output terminals of the temperature sensor 37 and the humidity sensor 38 respectively; the output terminal of the PLC controller is connected to the controlled terminals of the dehumidifier 34, the electric heating tube 352 of the heating component 35, the induced draft fan 36, the lifting and feeding machine 4 and the screw conveyor 5 respectively.

[0031] The working principle of this utility model is as follows:

[0032] Glass conveying:

[0033] After cleaning, the glass fragments are fed into the drying chamber 1 through the feed inlet 11 by the lifting and feeding machine 4, and first fall onto the top conveyor belt 21. The conveyor belt 21 transports the glass fragments downward layer by layer, with adjacent conveyor belts transporting in opposite directions, so that the glass fragments fall in a "zigzag" shape, which prolongs the drying path and time. At the same time, the waste glass fragments can be naturally turned over under the action of gravity to ensure the heating effect. The bottom conveyor belt 21 transports the glass fragments to the discharge outlet 12, and the screw conveyor 5 discharges them from the drying chamber, completing the drying process.

[0034] Hot air circulation and dehumidification:

[0035] The induced draft fan 36 drives the airflow through the main hot air duct 31 to the branch hot air duct 32, and sprays it from the air inlet 13 onto the glass fragments on the conveyor belt 21; the airflow carrying water vapor flows back to the main hot air duct 31 through the air outlet 14, and passes through the bag filter 33 to filter dust, the dehumidifier 34 to reduce humidity, and the heating element 35 to reheat before being recycled; the temperature sensor 37 and the humidity sensor 38 monitor the inlet air temperature and outlet air humidity in real time, and the PLC controller automatically adjusts the working status of the dehumidifier 34, the heating element 35 and the induced draft fan 36 according to the monitoring data to maintain a suitable temperature and humidity environment in the drying oven 1.

Claims

1. A drying device for waste glass recycling, comprising a frame, a drying chamber (1) mounted on the frame, a feed inlet (11) at the top of the drying chamber (1), and a discharge outlet (12) at the bottom of the drying chamber (1), characterized in that: The drying chamber (1) is equipped with a glass conveying mechanism (2) for conveying waste glass. The glass conveying mechanism (2) includes multiple conveyor belts (21) arranged at an angle from top to bottom and supported by rollers inside the drying chamber (1). The conveying directions of adjacent conveyor belts (21) are opposite, and the feeding end of the uppermost conveyor belt (21) is located below the feeding port (11), and the discharging end of the lowermost conveyor belt (21) is located above the discharging port (12). The side wall of the drying chamber (1) is provided with air inlets (13) that are arranged opposite to each conveyor belt (21). The bottom of the drying chamber (1) is provided with an air outlet (14). A hot air circulation mechanism (3) for providing hot air for drying glass is provided between the air outlet (14) and the air inlet (13). The device also includes a PLC controller. The output end of the PLC controller is connected to the controlled end of the conveyor belt (21) and the hot air circulation mechanism (3).

2. The drying device for recycling waste glass according to claim 1, characterized in that: The conveyor belt (21) has an inclination angle of 5°-15° and the surface of the conveyor belt (21) is provided with anti-slip texture.

3. The drying device for recycling waste glass according to claim 1, characterized in that: The hot air circulation mechanism (3) includes a main hot air duct (31) connected to the air outlet (14), and the other end of the main hot air duct (31) is connected to each air inlet (13) through a branch hot air duct (32); the main hot air duct (31) is provided with a bag filter (33) for dust removal, a dehumidifier (34) for dehumidification, a heating component (35) for heating and an induced draft fan (36) for providing power for hot air circulation in sequence along the air flow direction; the output terminal of the PLC controller is connected to the controlled terminals of the dehumidifier (34), the heating component (35) and the induced draft fan (36) respectively.

4. The drying device for recycling waste glass according to claim 3, characterized in that: The heating assembly (35) includes a wind box (351) installed on the main hot air duct (31). Inside the wind box (351), several rows of electric heating tubes (352) are arranged sequentially along the airflow direction. Each electric heating tube (352) is arranged vertically along the airflow direction and adjacent rows of electric heating tubes (352) are staggered. The controlled end of the electric heating tube (352) is connected to the output end of the PLC controller.

5. The drying device for recycling waste glass according to claim 3, characterized in that: A temperature sensor (37) is installed on the main hot air duct (31) near the air inlet (13) for monitoring the air inlet temperature; a humidity sensor (38) is installed on the main hot air duct (31) near the air outlet (14) for monitoring the air outlet humidity; the input terminal of the PLC controller is connected to the output terminals of the temperature sensor (37) and the humidity sensor (38) respectively.

6. The drying apparatus for recycling waste glass according to claim 1, characterized in that: A lifting feeder (4) for feeding is provided on one side of the drying box (1). The top discharge end of the lifting feeder (4) is correspondingly set with the feed inlet (11). The controlled end of the lifting feeder (4) is connected to the output end of the PLC controller.

7. The drying device for recycling waste glass according to claim 1, characterized in that: A screw conveyor (5) is provided below the drying box (1). The feed end of the screw conveyor (5) is correspondingly set with the discharge port (12). The controlled end of the screw conveyor (5) is connected to the output end of the PLC controller.

8. The drying device for recycling waste glass according to claim 1, characterized in that: The rack is provided with a control box, and the control box is provided with a control panel. The output end of the control panel is connected with the input end of a PLC controller, and the PLC controller is arranged in the control box.

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