WO2020220898A1

WO2020220898A1 - Tunnel dryer

Info

Publication number: WO2020220898A1
Application number: PCT/CN2020/081998
Authority: WO
Inventors: 蔡远明; 胡宗明
Original assignee: 南京研正干燥设备有限公司
Priority date: 2019-04-29
Filing date: 2020-03-30
Publication date: 2020-11-05
Also published as: CN210374464U

Abstract

A tunnel dryer comprises a feeding mechanism (1), a tunnel drying chamber (2), a discharge storage container (3), and a conveyor belt (4). One end of the conveyor belt (4) is located below the feeding mechanism (1), and the other end passes through the tunnel drying chamber (2) and is disposed above the discharge storage container (3). The feeding mechanism (1) comprises a hopper (11), a mixing mechanism, and an early warning mechanism. The top of the hopper (11) is provided with a feeding port (12), and the bottom of the hopper (11) is provided with a discharge port (13). The mixing mechanism comprises a mixing motor (14), a mixing blade (15), and a mixing drive shaft (16). The early warning mechanism comprises an early warning motor (17), an early warning drive shaft (18), and an early warning blade (19). The tunnel drying chamber (2) comprises a main body (21), a partition plate (22), a hot air chamber (23), a hot air duct (24), a hot air stove (25), and a hot air circulation pump (26). The tunnel dryer has a simple structure, saves time and effort, provides even heating, and achieves high drying efficiency and improved heat energy utilization.

Description

Tunnel type dryer

Technical field

The utility model relates to the technical field of drying equipment, in particular to a tunnel dryer.

Background technique

The dryer is widely used for drying and dewatering materials and products in the pharmaceutical, chemical, food, light industry, heavy industry and other industries. Such as: raw materials, crude drugs, Chinese herbal medicines, powders, granules, granules, large and small honey pill bottles, pigments, dyes, dehydrated vegetables, dried fruits, sausages, plastic resins, electrical components, baking paint, etc. Traditional dryers use steam coils for heating and drying, and use natural wind for ventilation. This drying produces the following defects: (1) It requires manual feeding and discharging, which is time-consuming and labor-intensive; (2) It takes a long time to reduce drying. Efficiency, and the moisture control is unstable, the water vapor emission is not smooth, and the generated heat is transferred from one side of the product to the other, resulting in uneven drying of the product and poor product consistency; (3) The efficiency of heat energy utilization is low. Energy issues are becoming more and more intense, and energy conservation and emission reduction have received attention.

Summary of the invention

In view of the shortcomings of the prior art, the purpose of the present invention is to provide a tunnel dryer, which has a simple structure, saves time and effort, is evenly heated, has high drying efficiency and high thermal energy utilization.

In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows: a tunnel dryer, including a feeding mechanism, a tunnel drying box, a discharge storage box, and a conveyor belt, one end of the conveyor belt is located at the feeding mechanism The lower position and the other end penetrates the tunnel drying box and is set above the discharge storage box; the feeding mechanism includes a hopper, a stirring mechanism, and an early warning mechanism. The top of the hopper is the inlet and the bottom is the outlet. The material port; the stirring mechanism includes a stirring motor, a stirring blade, a stirring drive shaft, the stirring motor is arranged outside the lower side wall of the hopper; one end of the stirring drive shaft is connected with the stirring motor and is arranged through the hopper, so The mixing blades are located in the hopper and spirally arranged on the circumference of the mixing drive shaft; the early warning mechanism includes an early warning motor, an early warning transmission shaft, and an early warning blade, the early warning motor is arranged outside the upper side wall of the hopper; the early warning transmission One end of the shaft is connected with the early warning motor, and the other end passes through the side wall of the hopper and is located in the hopper; the early warning blade is arranged at the end of the early warning drive shaft in the hopper and is located above the mixing blade; the tunnel drying box body It includes a main body, a partition board, a hot air box, a hot air pipe, a hot air stove, and a hot air circulation pump. The partition board is arranged in the main body and divides the main body into a drying chamber at the lower part and a circulation chamber at the upper part. There are multiple ventilation holes; the drying chamber is provided with an air inlet and a circulating air outlet, and the top of the circulating chamber is provided with an air outlet; the hot air box is arranged in the drying room, and one side of the hot air box is provided with The air filter, the air distribution plate, and the other side of the hot air box are provided with a blowing port and a fresh air port; the air inlet is in communication with the fresh air port, and a blowing fan is provided on the body at the blowing port; One end is connected with the air outlet of the hot blast stove, and the other end is connected with the air inlet of the hot blast stove after passing through the hot blast box and the hot blast circulating pump in sequence.

As a preferred solution, the conveyor belt is driven by a conveyor belt drive mechanism, which is located on the frame.

As a preferred solution, the feeding mechanism is moved in the vertical direction by a lifting mechanism. The lifting mechanism includes a lifting slide bar, a lifting slide, and a lifting motor. The lifting motor controls the lifting slide to perform on the lifting slide. Vertical movement; the lifting slider is vertically connected with a lifting link, which is connected with the outer wall of the hopper.

As a preferred solution, the outer wall of the hopper is provided with a light indicator, a buzzer, and a silence button.

As a preferred solution, the discharge port of the hopper is provided with a shortage detector.

As a preferred solution, a circulation mechanism is further included, and the circulation mechanism communicates with the drying chamber and the circulation chamber.

Compared with the prior art, the utility model has the beneficial effects: the utility model has a simple structure, saves time and effort, is heated uniformly, has high drying efficiency and high thermal energy utilization rate.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a schematic diagram of the structure of the tunnel drying box of the present invention.

Detailed ways

The utility model will be further described below in conjunction with specific embodiments. The following embodiments are only used to illustrate the technical solution of the present utility model more clearly, and cannot be used to limit the protection scope of the present utility model.

Examples:

As shown in Figures 1-2, a tunnel dryer includes a feeding mechanism 1, a tunnel drying box body 2, a discharge storage box 3, and a conveyor belt 4. One end of the conveyor belt 4 is located below the feeding mechanism 1. The other end penetrates through the tunnel drying box 2 and is located above the discharge storage box 3; the feeding mechanism 1 includes a hopper 11, a stirring mechanism, and an early warning mechanism. The top of the hopper 11 is a feeding port 12 , The bottom is the discharge port 13; the stirring mechanism includes a stirring motor 14, a stirring blade 15, a stirring drive shaft 16, the stirring motor 14 is arranged outside the lower side wall of the hopper 11; one end of the stirring drive shaft 16 and the stirring The motor 14 is connected to and penetrates the hopper 11, and the stirring blade 15 is located in the hopper 11 and spirally arranged on the circumference of the stirring drive shaft 16; the early warning mechanism includes an early warning motor 17, an early warning drive shaft 18, and an early warning Blade 19, the warning motor 17 is arranged outside the upper side wall of the hopper 11; one end of the warning transmission shaft 18 is connected to the warning motor 17, and the other end passes through the side wall of the hopper 11 and is located in the hopper 11; the warning blade 19 is arranged The early warning drive shaft 18 is located at the end of the hopper 11 and above the mixing blade 15; the tunnel drying box 2 includes a main body 21, a partition 22, a hot air box 23, a hot air duct 24, a hot air stove 25, The hot air circulation pump 26, the partition 22 is arranged in the main body 21 and divides the main body 21 into a drying chamber 27 at the lower part and a circulation chamber 28 at the upper part. The partition 22 is provided with a plurality of ventilation holes 29; The drying chamber 27 is provided with an air inlet 210 and a circulating air outlet 211, and the top of the circulating chamber 28 is provided with an air outlet 212; the hot air box 23 is arranged in the drying chamber 27, and one side of the hot air box 23 The air filter 213 and the air distribution plate 214 are provided, and the other side of the hot air box 23 is provided with a blowing port 215 and a fresh air port 216; the air inlet 210 is in communication with the fresh air port 216, and the body 21 at the blowing port 215 There is a blowing fan 217; one end of the hot blast pipe 24 is connected with the air outlet of the hot blast stove 25, and the other end passes through the hot blast box 23 and the hot blast circulation pump 26 in turn, and then is connected with the air inlet of the hot blast stove 25.

Specifically, the conveyor belt 4 is driven by a conveyor belt drive mechanism 41, and the conveyor belt drive mechanism 41 is located on the frame 5.

Further, the material to be dried is discharged onto the conveyor belt 4 through the feeding mechanism 1, and is driven by the conveyor belt driving mechanism 41 to be sent to the tunnel drying box 2 for drying, and finally transferred to the discharge storage box 3 for storage ,save time and energy.

Specifically, the feeding mechanism 1 is moved in the vertical direction by a lifting mechanism 6. The lifting mechanism 6 includes a lifting slide 61, a lifting slide 62, and a lifting motor 63. The lifting motor 63 controls the lifting slide 62 in the vertical direction. The lifting slide bar 61 performs a vertical movement; the lifting slide 62 is vertically connected with a lifting link 64 which is connected to the outer wall of the hopper 11.

Further, when feeding and discharging are required, the lifting mechanism 6 controls the lifting of the upper hopper 11 to carry out feeding and discharging of materials.

Specifically, the outer wall of the hopper 11 is provided with a light indicator 7, a buzzer 8, and a silence button 9.

More specifically, the discharge port 13 of the hopper 11 is provided with a shortage detector 110.

Further, when there is a shortage of material in the hopper 11, the shortage detector 110 detects that the pressure is insufficient, the light indicator 7 will flash, and the buzzer 8 will emit a loud alarm to remind the operator to check the feeding. The material in the hopper 11 exceeds the shortage. When the material detector 110 detects the height, the material shortage detector 110 detects that the material pressure is normal and automatically stops the alarm; the light indicator 7, the buzzer 8, and the silence button 9 are all set on the outer side wall of the hopper 11.

Specifically, a circulation mechanism 10 is further included, and the circulation mechanism 10 communicates with the drying chamber 27 and the circulation chamber 28.

Further, a thermometer 218 is provided in the circulation chamber 28, which can monitor the temperature in the main body 21 in time to avoid damage.

In the specific implementation, the materials to be dried are placed in the hopper 11, and the stirring mechanism is stirred. The materials fall on the conveyor belt 4 and are transported to the drying chamber 27. The hot air stove 25 is turned on, and the hot air passes through the hot air duct 24 In the box 23, the hot air flows out from the air filter 213 and the air distribution plate 214 to dry the wet products, while the moisture enters the circulation chamber 28 from the ventilation holes 29 of the partition 22, and then is discharged from the air outlet 212, and then passes through the circulation mechanism After 10, it enters the drying chamber 27 again from the circulating air outlet 211 for recycling. The air inlet 210 on the drying chamber 27 can be filled with fresh air in time, and the blowing fan 217 blows the fresh air into the drying chamber 27. The conveyor belt 4 is conveyed to the discharge storage box 3.

The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present utility model, several improvements and modifications can be made. These improvements And deformation should also be regarded as the protection scope of this utility model.

Claims

A tunnel dryer is characterized in that it comprises a feeding mechanism, a tunnel drying box, a discharge storage box, and a conveyor belt. One end of the conveyor belt is located below the feeding mechanism and the other end penetrates the tunnel drying box. And set at the upper position of the discharge storage box; the feeding mechanism includes a hopper, a stirring mechanism, an early warning mechanism, the top of the hopper is a feeding port, and the bottom is a discharge port; the stirring mechanism includes a stirring motor, a stirring mechanism Blades, a stirring drive shaft, the stirring motor is arranged outside the side wall of the lower part of the hopper; one end of the stirring drive shaft is connected with the stirring motor and is arranged through the hopper, and the stirring blade is located in the hopper and arranged in a spiral shape. The periphery of the stirring drive shaft; the early warning mechanism includes an early warning motor, an early warning drive shaft, and an early warning blade, the early warning motor is arranged outside the upper side wall of the hopper; one end of the early warning drive shaft is connected to the early warning motor, and the other end passes through The side wall of the hopper is located in the hopper; the early warning blade is arranged at the end of the early warning drive shaft in the hopper, and is located above the mixing blade; the tunnel drying box includes a body, a partition, a hot air box, a hot air pipe, Hot blast stove, hot blast circulating pump, the partition is arranged in the body and the body is divided into a drying chamber at the lower part and a circulation chamber at the upper part, the partition is provided with a plurality of ventilation holes; the drying chamber is provided There are air inlets and circulating air outlets, the top of the circulation chamber is provided with an air outlet; the hot air box is arranged in the drying room, and one side of the hot air box is provided with an air filter, an air distribution plate, and another hot air box One side is provided with a blowing port and a fresh air port; the air inlet is connected with the fresh air port, and a blowing fan is arranged on the body at the blowing port; one end of the hot air duct is connected with the air outlet of the hot blast stove, and the other end After passing through the hot air box and the hot air circulating pump in turn, it is connected with the air inlet of the hot air stove.
The tunnel dryer according to claim 1, wherein the conveyor belt is driven by a conveyor belt driving mechanism, which is located on the frame.
The tunnel dryer according to claim 1, wherein the feeding mechanism is moved in a vertical direction by a lifting mechanism, the lifting mechanism includes a lifting slide bar, a lifting slide, and a lifting motor. The lifting motor controls the lifting slider to move vertically on the lifting sliding rod; the lifting sliding block is vertically connected with a lifting connecting rod, and the lifting connecting rod is connected with the outer wall of the hopper.
The tunnel dryer of claim 1, wherein the outer wall of the hopper is provided with a light indicator, a buzzer, and a silence button.
The tunnel dryer according to claim 1, wherein the discharge port of the hopper is provided with a shortage detector.
The tunnel dryer according to claim 1, characterized in that it further comprises a circulation mechanism which communicates with the drying chamber and the circulation chamber.