CN103416835A - Material internal-circulating drum-type rapeseed dryer - Google Patents

Abstract

Provided is a material internal-circulating drum-type rapeseed dryer. A feed and discharge port is arranged in one side of an air outlet. A plurality of lifting boards are arranged in the inner wall of a rotary drum in the direction from an air inlet to the air outlet. An included angle is formed between the lifting boards and the axis of the rotary drum and enables materials in the rotary drum to rotate along with the rotary drum and move from the air inlet to the air outlet. A material backflow tube is fixed on the lifting boards and is of a spiral shape. The inlet of the material backflow tube is arranged in the air outlet end of the rotary drum and tightly attached to the inner wall of the rotary drum. The outlet of the material backflow tube is arranged in the air inlet end of the rotary drum, and the rotation direction of the material backflow tube enables the materials entering the material backflow tube in the rotating process of the rotary drum to move from the inlet end to the outlet end. The material internal-circulating drum-type rapeseed dryer is simple and practical, suitable for small-scale production and convenient to move, the rotary drum is shortened and miniaturization of the drum-type dryer is achieved.

Description

A material internal circulation drum type rapeseed dryer

technical field

The invention relates to a small dryer for drying rapeseeds after the rapeseed is harvested, in particular to a material internal circulation drum type rapeseed dryer.

Background technique

Rapeseed is the main oil crop in southern my country. The moisture content of freshly harvested rapeseed is about 20%, and it needs to be dried to a safe moisture content (about 7-10%) before it can be stored. Due to the relatively low level of mechanized operations in production links such as rapeseed planting and harvesting in my country, and the lack of rapeseed drying equipment in the market, the natural drying method is mainly used for drying rapeseed at present. However, in southern my country, the harvest time of rapeseed is often in the rainy season, and the high temperature and high humidity environment can easily cause rapeseed to germinate or become moldy. At present, there is an urgent need in the market for special dryers designed for rapeseed materials and production characteristics.

Contents of the invention

The purpose of the present invention is to provide a simple and practical drum type rapeseed dryer that can reduce the length of the drum, realize the miniaturization of the drum dryer, and is suitable for small batch production and easy to move. Dryer.

The present invention realizes above-mentioned object through following technical scheme:

A material internal circulation drum type rapeseed dryer, including a drum installed on the frame, a hot air device and a rotating device, the drum is provided with an air inlet, an air outlet and a material inlet and outlet, and the inlet and outlet are provided The cover plate that closes the inlet and outlet, the air outlet of the hot air device is connected to the air inlet of the drum, and the drum is driven to rotate along the axis by the rotating device, and the inlet and outlet are arranged at the air outlet On one side, a plurality of lifting plates are provided on the inner wall of the drum in the direction from the air inlet to the air outlet, and an included angle is set between the lifting plates and the axis of the drum, and the included angle makes the The material in the drum moves from the air inlet to the air outlet as the drum rotates. The material return pipe is fixed on the lifting plate. The material return pipe is spiral and the inlet is set at the air outlet end of the drum. And close to the inner wall of the drum, the outlet of the material return pipe is set at the air inlet end of the drum, and the rotation direction of the material return pipe makes the material entering the material return pipe flow from the inlet end to the The exit port moves.

The hot air device includes an electric heater, a hot air pipe and a fan. One end of the hot air pipe is connected to the air inlet of the drum, and the other end is connected to the air outlet of the fan. The hot air pipe is wrapped with electric heater.

The rotating device includes a roller, a roller shaft, a motor, a reducer and a roller groove. The outer wall of the drum is provided with a plurality of roller grooves around the axis of the roller. The roller shaft is equipped with a roller, the motor is connected with the roller shaft through a reducer and drives the roller shaft to rotate, the roller shaft is arranged on the lower side of the roller, and the roller is installed In the roller groove, the roller drives the roller to rotate.

A discharge chute is provided on the frame, and the discharge chute is arranged below the inlet and outlet.

Owing to adopting above-mentioned structure, the present invention has following advantage:

1. In the present invention, a lifting plate with an included angle to the axis of the drum is installed on the inner wall of the drum, and when the drum rotates, the material is thrown and the material is moved from the air inlet end of the drum to the air outlet end in the axial direction. A spiral-shaped material return pipe is formed, and its spiral direction is opposite to the tilting direction of the lifting plate. When the drum rotates, the material can be sent back from the air outlet end of the drum to the air inlet end, so that the material flows between the lifting plate and the spiral return pipe. Under the comprehensive effect of the combined effect, the circulation flow is realized, and the uniform drying is realized, which changes the continuous working mode of the existing tumble dryer, thereby reducing the length of the tumbler, achieving the effect of the existing tumbler, and realizing the The miniaturization is suitable for small batch production and easy to move.

2. In the present invention, hot air inlets and outlets are respectively provided at both ends of the drum. During operation, the hot air enters through the air inlets under the action of the fan, and contacts with rapeseeds for heat exchange when passing through the cylinder axially, thereby taking away the moisture in the rapeseeds. At the same time, the cylinder rotates, and the rapeseed in the cylinder is in a boiling state under the throwing of the lifting plate, so as to increase the heat exchange area between the material and the hot air, and improve the heat exchange efficiency.

3. The present invention is aimed at drying rapeseeds. The electric heater attached to the hot air pipe by the hot air device heats the wind in the hot air pipe, so that the heating is uniform and the heating speed is fast.

3. The rotating device of the present invention adopts the cooperation of the roller groove and the roller to drive the roller to rotate, so that the rotation is stable and easy to control.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the left view of the present invention;

Fig. 3 is a sectional view of the roller of the present invention.

Among accompanying drawings 1 to 3, 1, drum, 2, air inlet, 3, electric heater, 4, hot air pipe, 5, control electric box, 6, blower fan, 7, roller, 8, roller shaft, 9, machine Frame, 10, motor, 11, reducer, 12, unloading chute, 13, inlet and outlet, 14, air outlet, 15, inlet and outlet cover plate, 16, logistics return pipe, 17, lifting plate, 18, Roller groove, 19, cylinder outer wall.

Detailed ways

Below in conjunction with accompanying drawing, the specific implementation manner of this patent is described in further detail.

As shown in Figures 1 to 3, a material internal circulation drum type rapeseed dryer includes a drum 1 installed on a frame 9, a hot air device and a rotating device, and the drum 1 is provided with an air inlet 2 and an air outlet 14 and inlet and outlet 13, the inlet and outlet 13 is provided with a cover plate 15 to close the inlet and outlet, the air outlet of the hot air device is connected with the air inlet of the drum, and the drum 1 passes through the The rotating device rotates along the axis, the inlet and outlet 13 is set on the side of the air outlet 14, and the inner wall of the drum 1 is provided with a plurality of lifting plates in the direction from the air inlet 1 to the air outlet 14 17. There is an included angle between the lifting plate 17 and the axis of the drum 1, and the included angle makes the material in the drum 1 move from the air inlet 1 to the air outlet 14 as the drum rotates. A material return pipe 16 is fixed on the lifting plate 17. The material return pipe 16 is spiral and the inlet is arranged at the air outlet end of the drum 1 and is close to the inner wall of the drum 1. The outlet of the material return pipe 16 It is arranged at the air inlet end of the drum 1, and the rotation direction of the material return pipe 16 makes the material entering the material return pipe move from the inlet end to the outlet end when the drum 1 rotates.

The hot air device includes an electric heater 3, a hot air pipe 4 and a fan 6, one end of the hot air pipe 4 is connected to the air inlet 2 of the drum 1, and the other end is connected to the air outlet of the fan 6, the The electric heater 3 is wrapped on the hot air pipe 4 .

The rotating device includes a roller 7, a roller shaft 8, a motor 10, a speed reducer 11 and a roller groove 18, and the outer wall of the drum 1 is provided with a plurality of roller grooves 18 around the axis of the roller. Motor 10, reducer 11 and roller shaft 8 are installed on frame 9, and roller 7 is installed on described roller shaft 8, and described motor 10 is connected with described roller shaft 8 through reducer 11 and drives described roller shaft 8 to rotate , the roller shaft 8 is arranged on the lower side of the roller 1, the roller 7 is installed in the roller groove 18, and the roller 7 drives the roller 1 to rotate.

The frame 9 is provided with a discharge chute 12 , and the discharge chute 12 is arranged below the inlet and outlet 13 . The frame is also provided with a control electrical box 5, and the control electrical box 5 controls the opening and closing of the blower fan 6, the motor 10, and the electric heater 3.

During work: when feeding, rotate the drum 1 to the position where the inlet and outlet 13 is facing upwards, open the inlet and outlet cover 15, pour the rapeseed to be dried from the inlet and outlet 13 and cover the cover 15. During the drying operation, the motor 10 rotates, the speed is reduced by the speed reducer 11 to drive the roller shaft 8, and the roller 7 is used to drive the drum 1 to rotate at a speed of 8 rpm. A lifting plate 17 with a certain inclination angle is installed on the inner wall of the drum 1. With the rotation of the drum 1, the material is brought to the top by the lifting plate 17 and thrown down to form a material scattering effect. At the same time, because the lifting plate 17 has a certain inclination angle, as the drum 1 rotates, the material flow will move along the inclination direction (the direction of the air outlet 14). There is also a helical material return pipe 16 inside the drum 1, the helical direction of which is opposite to the inclination direction of the lifting plate 17, so the two have opposite material conveying directions under the same drum rotation direction. As the drum 1 rotates, the material return pipe 16 transports the material accumulated at the end of the air outlet 14 to the end of the air inlet 2, thereby forming a material circulation. During the drying operation, the fan 6 rotates to generate positive pressure. When the wind passes through the air duct 4, it is heated by the electric heater 3 installed on the air duct 4. The hot air enters the drum 1 from the air inlet 2 and then exchanges heat with the materials thrown and brings After the moisture is removed, it is discharged from the air outlet 14 to realize drying of the material. Bearing is housed on air inlet 2 and air outlet 14, can not rotate with cylinder 1, and filter screen is housed on air inlet 2 and air outlet 14 and is used to prevent material leakage. When unloading, open the inlet and outlet cover plate 15 to keep the drum 1 rotating. Along with the rotation of the drum 1, the material flows out intermittently from the inlet and outlet 13, is diverted by the discharge chute 12, and is packed into bags. Because the air outlet 14 end has lost the function of material accumulation, the material no longer enters the material return pipe 16, but only continuously moves to the air outlet 14 end with the action of the lifting plate 17 and is finally discharged. Side baffles extending obliquely upward are designed on both sides of the discharge chute 12 for recovering the materials thrown out from the inlet and outlet 13 as the drum 1 rotates.

Claims (4)

1. circulation drum-type rapeseed dryer in a material, comprise rack-mounted cylinder, hot air apparatus and whirligig, described cylinder is provided with air inlet, air outlet and feed inlet and outlet, described feed inlet and outlet is provided with the cover plate of the described feed inlet and outlet of sealing, the air outlet of described hot air apparatus is connected with the air inlet of described cylinder, described cylinder drives and rotates along axis by described whirligig, it is characterized in that, described feed inlet and outlet is arranged on described air outlet one side, direction from described air inlet to air outlet on the inwall of described cylinder is provided with many lifting blades, the axis of described lifting blade and described cylinder is provided with an angle, described angle makes the interior material of described cylinder along with described drum rotating moves to air outlet from air inlet, be fixed with the feed back pipe on described lifting blade, described feed back pipe in the shape of a spiral and import be arranged on the air opening end of described cylinder and be close to described inner wall of rotary drum, the outlet of described feed back pipe is arranged on the air inlet end of described cylinder, the direction of rotation of described feed back pipe enters into feed back pipe material while making described drum rotating moves to the port of export from entrance point.

2. circulation drum-type rapeseed dryer in material according to claim 1, it is characterized in that, described hot air apparatus comprises electric heater, warm-air pipe and blower fan, one end of described warm-air pipe is connected with the air inlet of described cylinder, the other end is connected with described fan outlet, is enclosed with described electric heater on described warm-air pipe.

3. circulation drum-type rapeseed dryer in material according to claim 1 and 2, it is characterized in that, described whirligig comprises roller, roller shaft, motor, decelerator and roller groove, the outer wall of described cylinder is provided with a plurality of described roller groove around described cylinder axis one circle, on described frame, motor is installed, decelerator and roller shaft, on described roller shaft, roller is installed, described motor is connected with described roller shaft by decelerator and drives the rotation of described roller shaft, described roller shaft is arranged on described cylinder downside, described roller is arranged in described roller groove, described roller drives described drum rotating.

4. circulation drum-type rapeseed dryer in material according to claim 1, is characterized in that, described frame is provided with blowpit, and described blowpit is arranged on the below of described feed inlet and outlet.

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