Movable positive pressure dryer

Abstract

The utility model discloses a movable positive pressure dryer which comprises a base plate, a biomass furnace, an air blower, a stock bin and a bucket elevator are arranged on the base plate, a diffusion cover is arranged in the stock bin, and an upper cover and a lower cover of a gauze outside the diffusion cover are conical, so that direct accumulation of grains is effectively avoided, and ventilation efficiency among the grains is remarkably improved. In addition, the material distribution mechanism arranged at the top of the material bin is accurately controlled through a walking mechanism and a steering motor on the material distribution mechanism, uniform material distribution of the grains in the material bin is achieved, it is guaranteed that the grains are evenly heated in the drying process, and the drying efficiency is improved. And the problem of local overheating or insufficient drying is avoided, and the drying quality and efficiency are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage equipment, in particular to a mobile positive pressure dryer. Background Technique

[0002] As an important food crop for humans, grains need to be properly processed after harvesting to ensure their long-term preservation without deterioration. Traditional grain dryers mostly use fans to blow hot air into the silo, and the moisture is carried out through the flow of hot air between the grain gaps, so as to achieve the purpose of drying; however, in the actual application process, this method has many deficiencies.

[0003] First of all, the sealing structure of the existing dryer silo is often not tight enough, resulting in too fast heat dissipation during the drying process. This not only increases energy consumption but also reduces the drying efficiency, making the grains unable to reach the ideal drying state.

[0004] Secondly, the size of the gaps between grains has a significant impact on the fluidity of hot air. Especially for grains with smaller particles, such as millet and paddy, due to the smaller gaps between them, the fluidity of hot air between them is poor, and the temperature in the area directly facing the air inlet is often higher than that on both sides, resulting in uneven heating of the grains during the drying process.

[0005] Therefore, it is necessary to propose a new type of grain dryer to make up for the above deficiencies. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies, and propose a mobile positive pressure dryer to solve the problems raised in the background technique.

[0007] To achieve the above technical purpose, the technical solution of the utility model provides a mobile positive pressure dryer, including a chassis, a biomass furnace, a blower, a silo and a bucket elevator are arranged on the chassis, a diffusion hood is arranged in the silo, a duct communicating with the diffusion hood is arranged on the silo, the air inlet of the blower is communicated with the biomass furnace, and the air outlet is communicated with the duct, a screw conveyor is arranged at the bottom of the silo, a belt conveyor is arranged on the chassis below the screw conveyor, the end of the belt conveyor is communicated with the feeding port of the bucket elevator, a cloth mechanism is arranged at the top of the silo, the cloth mechanism is directly opposite to the discharging port of the bucket elevator, and the cloth mechanism distributes the grains output by the bucket elevator into the silo or a transfer mechanism.

[0008] Further, the cloth feeding mechanism includes a cloth feeding bracket and a horizontal conveyor. The cloth feeding bracket is fixedly arranged on the top of the bin. A traveling mechanism is arranged between the cloth feeding bracket and the horizontal conveyor. The traveling mechanism reciprocates on the cloth feeding bracket. A steering tray and a steering motor are arranged on the traveling mechanism. The output shaft of the steering motor is connected to the steering tray to drive it to rotate. The horizontal conveyor is arranged on the steering tray.

[0009] Further, the diffusion hood includes a cylindrical section with a steel skeleton and an externally laid wire mesh, an upper cover and a lower cover. Both the upper cover and the lower cover are conical, and the bottom diameters of both are larger than the diameter of the cylindrical section. A material guiding hopper is arranged at the lower end of the lower cover. The upper end of the material guiding hopper is directly opposite to the discharge port of the bin, and the lower end is directly opposite to the belt conveyor. One end of the air duct penetrates into the cylindrical section.

[0010] Further, the air duct includes a connecting pipe and a dispersing pipe. One end of the connecting pipe is communicated with the air inlet of the blower, and the other end is communicated with the dispersing pipe. The dispersing pipe is vertically arranged, and air guiding ridges are arranged on its inner wall and are directly opposite to the connecting pipe. A wind shield is arranged at the lower end of the dispersing pipe.

[0011] Further, telescopic legs and wheels are arranged on both sides of the chassis. A towing bar is arranged at one end of the chassis. The towing bar is rotatably connected to the chassis.

[0012] Compared with the prior art, the beneficial effects of the present utility model include:

[0013] 1. The present utility model provides a stable and environmentally friendly hot air source through the biomass furnace, and combines with the efficient air supply system of the blower to realize the rapid circulation and uniform distribution of hot air in the air duct; the specially designed diffusion hood, with a wire mesh externally laid and the upper and lower covers being conical, effectively avoids the direct accumulation of grains, significantly improves the air permeability efficiency between grains, enables the hot air to contact the grains more fully, thereby improving the drying efficiency. In addition, the cloth feeding mechanism realizes the uniform cloth feeding of grains in the bin through the precise control of the traveling mechanism and the steering motor on it, ensures that the grains are evenly heated during the drying process, avoids the problems of local overheating or insufficient drying, and further improves the drying quality and efficiency.

[0014] 2. The present utility model is provided with telescopic legs and wheels on both sides of the chassis, so that the dryer can be stably supported during use and can be easily towed during movement, greatly improving the flexibility and convenience of the equipment. In particular, the design of the cloth feeding mechanism avoids the defect of the traditional flap material guiding groove that requires a height difference, effectively reduces the overall height of the dryer, makes it more convenient to move between grain bins with limited height, and improves the utilization rate of the equipment. Description of the Drawings

[0015] Figure 1It is a schematic diagram of a mobile positive pressure dryer provided by the present utility model;

[0016] Figure 2 It is a schematic diagram of the silo of a mobile positive pressure dryer provided by the present utility model;

[0017] Figure 3 It is a schematic diagram of the diffuser hood of a mobile positive pressure dryer provided by the present utility model;

[0018] Figure 4 It is a schematic diagram of the air duct of a mobile positive pressure dryer provided by the present utility model. Specific embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Refer to Figure 1 、 Figure 2 The present utility model provides a mobile positive pressure dryer, including a chassis 1. Telescopic legs 101 and wheels 102 are arranged on both sides of the chassis 1. The telescopic legs 101 can be extended during use to support the entire dryer; the wheels 102 are used to facilitate movement. A towing bar 103 is arranged at one end of the chassis 1, and the towing bar 103 is rotatably connected to the chassis 1 to adjust the direction during towing movement.

[0021] A biomass furnace 2, a blower 3, a silo 4 and a bucket elevator 10 are arranged on the chassis 1. A diffuser hood 8 is arranged in the silo 4, and an air duct 9 communicating with the diffuser hood 8 is arranged on the silo 4 to introduce hot air into the diffuser hood 8. The air inlet of the blower 3 is communicated with the biomass furnace 2 to suck the hot air heated by the biomass furnace 2, and the air outlet is communicated with the air duct 9, so as to send the hot air into the silo 4 and evenly distribute it in the silo 4 through the diffuser hood 8. A screw conveyor 11 is arranged at the bottom of the silo 4 to output the dried grains from the silo 4. A belt conveyor 5 is arranged on the chassis 1 below the screw conveyor 11 to convey the grains from the screw conveyor 11 to the bucket elevator 10. The end of the belt conveyor 5 is communicated with the feed inlet of the bucket elevator 10, and the bucket elevator 10 is used to lift the grains to the top of the silo 4.

[0022] In actual application, the movement of grain dryer is mostly restricted by the height of the warehouse door. Usually, the height of the warehouse door is less than 5 meters. Therefore, in order to reduce the height of the dryer, the present invention installs a feeding mechanism on the top of the silo 4. The feeding mechanism is opposite to the discharge port of the bucket elevator 10, and is used to evenly distribute the grain output by the bucket elevator 10 into the silo 4 or transfer it to other mechanisms. The feeding mechanism includes a feeding bracket 6 and a horizontal conveyor 7. The feeding bracket 6 is fixedly installed on the top of the silo 4. A walking mechanism (not shown in the figure, but an important component of the feeding mechanism) is installed between the feeding bracket 6 and the horizontal conveyor 7. The walking mechanism is maintained in reciprocating motion on the cloth support 6 through a specific connection method. A steering tray and a steering motor (not shown in the figure, used to drive the steering tray to rotate) are provided on the walking mechanism, and the horizontal conveyor 7 is installed on the steering tray. This design enables the cloth mechanism to flexibly adjust the cloth direction and position to ensure that the grain is evenly distributed in the silo 4; in order to avoid material jamming, the existing flap guide trough must have a certain height difference between its discharge port and feed port, and the cloth mechanism in the utility model avoids this defect, effectively reducing the overall height of the dryer, making it more convenient to move between barns and thus improving utilization.

[0023] Reference Figure 3 The diffusion cover 8 includes a cylindrical section 801 with a steel frame and a gauze covering the outside, an upper cover 802, and a lower cover 803. The upper cover 802 and the lower cover 803 are both conical, and the bottom diameters of both are larger than the diameter of the cylindrical section 801. When the grain falls from the top of the silo, the edge of the upper cover 802 acts like an eave, preventing the grain from directly accumulating outside the cylindrical section 801, thereby improving the ventilation efficiency between the grains. The lower end of the lower cover 803 is provided with a guide hopper 804. The upper end of the guide hopper 804 is opposite to the discharge port of the silo 4, and the lower end is opposite to the belt conveyor 5, so as to smoothly discharge the dried grains.

[0024] Reference Figure 4 The air guide pipe 9 includes a connecting pipe 901 and a dispersion pipe 902. One end of the connecting pipe 901 is connected to the air inlet of the blower 3, and the other end is connected to the dispersion pipe 902. In practical applications, the dispersion pipe 902 is usually coaxially arranged with the cylindrical section 801, and an air guide ridge 903 is provided on its inner wall to face the connecting pipe 901. The design of the air guide ridge 903 helps to discharge the hot air evenly from both ends of the dispersion pipe 902. A wind shield 904 is provided at the lower end of the dispersion pipe 902. The wind shield 904 can prevent the hot air from blowing directly to the bottom of the diffusion cover 8, thereby further improving the utilization rate of the hot air.

[0025] The mobile positive-pressure dryer of the present utility model provides hot air through the biomass furnace 2. The blower 3 sends the hot air into the air duct 9, and then evenly distributes it into the silo 4 through the diffuser 8. The cloth-feeding mechanism can evenly distribute the grains into the silo 4 to ensure that the grains are evenly heated during the drying process. At the same time, the design of the diffuser 8 and the air duct 9 effectively reduces the loss of heat and improves the drying efficiency.

[0026] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A mobile positive pressure dryer, comprising a chassis, on which a biomass furnace, a blower, a silo and a bucket elevator are arranged, characterized in that: A diffusion hood is provided in the silo, an air duct connected to the diffusion hood is provided on the silo, the air inlet of the blower is connected to the biomass furnace, and the air outlet is connected to the air duct, a screw conveyor is provided at the bottom of the silo, a belt conveyor is provided on the chassis below the screw conveyor, the end of the belt conveyor is connected to the feed port of the bucket elevator, and a distribution mechanism is provided on the top of the silo, the distribution mechanism is opposite to the discharge port of the bucket elevator, and the distribution mechanism distributes the grain output by the bucket elevator into the silo or the transfer mechanism.

2. The mobile positive pressure dryer according to claim 1, wherein: The material distribution mechanism includes a material distribution support and a horizontal conveyor. The material distribution support is fixedly arranged on the top of the silo. A walking mechanism is arranged between the material distribution support and the horizontal conveyor. The walking mechanism is kept on the material distribution support for reciprocating motion. A steering pallet and a steering motor are arranged on the walking mechanism. The output shaft of the steering motor is connected to the steering pallet to drive it to rotate. The horizontal conveyor is arranged on the steering pallet.

3. A mobile positive pressure dryer according to claim 2, characterized in that: The diffusion cover includes a cylindrical section with a steel frame and a gauze covered on the outside, an upper cover and a lower cover. The upper cover and the lower cover are both conical, and the bottom diameters of both are larger than the diameter of the cylindrical section. A guide hopper is provided at the lower end of the lower cover. The upper end of the guide hopper is opposite to the discharge port of the silo, and the lower end is opposite to the belt conveyor. One end of the air duct passes through the cylindrical section.

4. A mobile positive pressure dryer according to claim 2 or 3, characterized in that: The air guide pipe includes a connecting pipe and a dispersion pipe. One end of the connecting pipe is connected to the air inlet of the blower, and the other end is connected to the dispersion pipe. The dispersion pipe is vertically arranged and has an air guide ridge on its inner wall facing the connecting pipe. A wind shield is provided at the lower end of the dispersion pipe.

5. A mobile positive pressure dryer according to claim 4, characterized in that: Telescopic legs and wheels are provided on both sides of the chassis, and a tow bar is provided at one end of the chassis, and the tow bar is rotatably connected to the chassis.

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