Grain dryer

Abstract

The utility model discloses a grain drying machine. The grain drying machine comprises a vertical drying bin, a heater, a fan and an elevator, the side wall of the drying bin is a microporous plate, an airflow bin is vertically arranged in the center of the drying bin and connected with a fan, the side wall and the top of the airflow bin are both of a porous plate or net-shaped structure, and air can be supplied into the drying bin through the airflow bin; the top face of the airflow bin is arranged in a cone top mode and used for distributing grains to the periphery. The fan communicates the heater with the airflow bin and can supply hot air into the airflow bin; a material collecting bin is arranged on the lower portion of the drying bin, a material distributing bin is arranged at the bottom of the material collecting bin, a conveying belt is arranged on the lower portion of the material distributing bin, and uneven conveying caused by the fact that grains fall into the conveying belt disorderly is avoided through the material distributing bin; and an elevator is arranged to be matched with the drying bin, an external material receiving opening is formed in the bottom of the elevator and is connected with the tail end of the conveying belt, external material receiving can be achieved, and annular material supply can be formed through the elevator and the drying bin.

Description

Technical Field

[0001] This utility model relates to the field of grain drying technology, specifically to a grain dryer. Background Technology

[0002] In the field of material drying, especially grain drying, the conventional approach to improve drying efficiency is to use a hoist to lift the grain to a high place and then send air into the grain during the descent, thereby increasing the air circulation inside the grain to achieve the drying operation.

[0003] The structure of the grain dryer described above can be referenced from the relevant disclosed structures of patents with patent numbers CN201510215768.5 and CN201410592862.8.

[0004] The above-mentioned type of dryer has technical drawbacks in actual use, which can be summarized as follows: 1. The drying equipment is isolated from the outside, and its air circulation surface is small, which does not provide the maximum efficiency of ventilation area; 2. When realizing cyclic drying, the grain is prone to accumulate on the conveyor belt, affecting the lifting efficiency of the elevator; 3. The simple air supply structure leads to low air supply efficiency, which cannot improve the drying efficiency.

[0005] Based on the summary and analysis of the above-mentioned technical status, those skilled in the art should make further improvements to the internal structure of existing grain dryers of this type. The purpose is to solve the aforementioned technical problems encountered in the existing technology and improve the drying efficiency of grains and all granular materials. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a grain dryer, which improves drying efficiency by setting a vertical grain diversion device and simultaneously supplying a full range of high-temperature airflow inside the grain diversion device. At the same time, the even distribution device prevents the grain from accumulating on the conveyor belt when the material falls.

[0007] A grain dryer, the specific design of which is as follows:

[0008] It includes a vertical drying chamber, a heater, a fan, and an elevator; the sidewalls of the drying chamber are made of perforated plates, and an airflow chamber is vertically arranged in the center of the drying chamber. The airflow chamber is connected to the air outlet of the fan. The sidewalls and top of the airflow chamber are made of perforated plates or mesh structures; the top surface of the airflow chamber is set with a conical top; the fan connects the heater to the airflow chamber; a material collection chamber is set at the bottom of the drying chamber, and a material distribution chamber is set at the bottom of the material collection chamber. A conveyor belt is set below the material distribution chamber; an elevator is set in conjunction with the drying chamber, and an external receiving port is set at the bottom of the elevator. The bottom of the elevator is also connected to the end of the conveyor belt; a top feeding chamber is set at the top of the elevator, and an internal feeding port and an external feeding port are set on the top feeding chamber. A control valve is set between the internal feeding port and the external feeding port.

[0009] The drying chamber is arranged in multiple vertical sections, and the airflow chamber is also arranged in multiple vertical sections. An external support rod is provided between the inner wall of the drying chamber and the outer wall of the airflow chamber. A central column is provided in the middle of the airflow chamber, and the top of the central column is connected to the cone top. Several internal support rods are provided between the central column and the interior of the airflow chamber.

[0010] An air supply pipe extends from the fan and extends into the drying chamber. A distribution plate is provided at the end of the air supply pipe, and several through holes are provided on the distribution plate for axial ventilation.

[0011] The material distribution bin is equipped with multiple vertical partitions, which divide the inside of the material distribution bin into multiple vertical sections; the material distribution bin is equipped with multiple material distribution rollers, and the material distribution rollers are equipped with several material feeding plates, which quantitatively and evenly distribute and guide the material in the upper part of the material distribution bin downward when the material distribution rollers rotate.

[0012] The conveyor belt is inclined, and its end is inclined and lifted to prevent materials from falling to the bottom of the elevator.

[0013] This grain dryer is equipped with a mobile platform, which has a traction end that can be connected to an external traction vehicle to achieve on-site towing.

[0014] The external feeding port is connected to an external hose, through which the dried grain is guided to the outside.

[0015] A flow guide is provided on the top surface of the cone to prevent the grain from impacting and damaging the cone.

[0016] The control valve includes a hinged swing plate, which is hinged between the internal feed port and the external feed port. Both the internal and external feed ports are provided with positioning baffles that overlap with the swing plate. The front and rear side walls of the top feed hopper, or at least one side of the front and rear side walls, are provided with guide grooves. The guide grooves cooperate with the protrusions at the ends of the swing plate to guide the swing.

[0017] The beneficial effects of this utility model are as follows: This utility model includes a vertical drying chamber, a heater, a fan, and an elevator; the side wall of the drying chamber is a perforated plate, and an airflow chamber is vertically arranged in the center of the drying chamber. The airflow chamber is connected to the fan. The side wall and top of the airflow chamber are both made of perforated plates or mesh structures, and air can be supplied into the drying chamber through the airflow chamber; the top surface of the airflow chamber is set with a cone top, which is used to divert the grain to the outside; the fan connects the heater to the airflow chamber and can supply hot air into the airflow chamber; a collection chamber is set at the bottom of the drying chamber, and a distribution chamber is set at the bottom of the collection chamber. A conveyor belt is set at the bottom of the distribution chamber to prevent the grain from falling into the conveyor belt in a disorderly manner and causing uneven conveying; an elevator is set in conjunction with the drying chamber. The bottom of the elevator is set with an external receiving port and is also connected to the end of the conveyor belt, which can realize external receiving and can also form a ring feeding with the drying chamber; the top of the elevator is set with an internal feeding port and an external feeding port, which can realize functional switching during operation. This invention achieves large-area ventilation through the above-mentioned design, while simultaneously guiding hot air to the drying chamber, which can effectively improve the drying efficiency of grain. Attached Figure Description

[0018] The structure of the device of this utility model will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the front three-dimensional structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the rear side of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the right side of this utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the main view of this utility model;

[0024] Figure 6 This is a schematic diagram of the surface structure of the equal-distribution plate;

[0025] Figure 7 This is a schematic diagram of the material distribution bin structure;

[0026] Figure 8This is a schematic diagram of the internal structure of the material distribution bin;

[0027] Figure 9 yes Figure 5 Enlarged schematic diagram of the structure of region A in the middle;

[0028] Figure 10 yes Figure 5 Enlarged schematic diagram of the structure of region B in the middle;

[0029] 1. Trolley; 11. Traction end; 2. Fan; 21. Air supply pipe; 22. Flange; 23. Distribution plate; 231. Through hole; 3. Heater; 4. Drying chamber; 41. Annular sidewall; 42. Airflow chamber; 43. Conical top; 44. Flow guide; 45. External support rod; 46. Central column; 47. Internal support rod; 48. Collection bin; 5. Elevator; 51. Receiving port; 52. Elevator chamber; 53. Top 54. Internal feeding hopper, 55. External feeding hopper, 56. External hose, 57. Top operating area, 58. Ladder, 6. Distribution hopper, 61. Vertical partition, 62. Vertical partition, 63. Distribution roller, 64. Material feeding plate, 65. Inclined discharge port, 7. Control valve, 71. Swing plate, 72. Positioning baffle I, 73. Positioning baffle II, 74. Guide groove, 75. Pull rope, 8. Conveyor table. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings.

[0031] Example 1:

[0032] A grain dryer, as shown in the attached document Figure 1-5 As shown, it includes a vertical drying chamber 4, a heater 3, a fan 2, and an elevator 5. A collection bin 48 is located at the lower part of the drying chamber 4, and a distribution bin 6 is located at the bottom of the collection bin 48. A conveyor platform 8 is located below the distribution bin 6, and a conveyor belt is installed inside the conveyor platform 8. These modules or devices constitute the main structure of this utility model. To facilitate the transportation and movement of this grain dryer, all the above devices are installed on a mobile platform. In this embodiment, the mobile platform is a trolley with wheels, and the wheels are equipped with traction ends 11 that can be connected to external traction vehicles to achieve traction movement within the site.

[0033] The drying chamber 4 disclosed in this utility model has an annular sidewall 41 made of a perforated plate. An airflow chamber 42 is vertically arranged at the center of the drying chamber 4. The airflow chamber 42 is connected to the air outlet duct 21 of the fan 2. The sidewall and top of the airflow chamber 42 are both perforated plates or mesh structures; in this embodiment, a perforated plate is used. The top surface of the airflow chamber 42 is conical. The fan 2 connects the heater 3 to the airflow chamber 42. A hoist 5 is provided in conjunction with the drying chamber 4. The bottom of the hoist 5 has an external receiving port 51, and the bottom of the hoist 5 is also connected to the end of the conveyor belt. A top feeding chamber 53 is provided at the top of the hoist 5. The top feeding chamber 53 has an internal feeding port 54 and an external feeding port 55, and a control valve 7 is provided between the internal feeding port 54 and the external feeding port 55. Furthermore, for ease of assembly, disassembly, and transportation, this utility model designs the drying chamber 4 as a vertically multi-segment structure, with each adjacent segment connected by a flange.

[0034] The airflow chamber 42 is vertically segmented. External support rods 42 are installed between the inner wall of the drying chamber 4 and the outer wall of the airflow chamber 42. A central column 46 is located in the middle of the airflow chamber 42, and the top of the central column 46 connects to the conical top 43. Several internal support rods 47 are installed between the central column 46 and the interior of the airflow chamber 42. Through the axial support of the central column 46, the external support rods 42 and the internal support rods 47 provide radial strength reinforcement support for the entire interior of the drying chamber 4, enabling it to withstand the downward impact of a large amount of grain. A flow guide shroud 44 is installed on the top surface of the conical top 43 to prevent damage from the impact of grain on the conical top.

[0035] In this embodiment, an air supply pipe 21 extends from the fan 2, and the air supply pipe 21 extends into the interior of the drying chamber or is connected to the outer wall of the drying chamber 4 by a flange 22.

[0036] The end of the air supply duct 21 is provided with a dividing plate 23, such as Figure 6 As shown, the equalization plate 23 is provided with a number of through holes 231 for axial ventilation. After the through holes 231 are provided, the airflow can be prevented from directly entering the airflow chamber 42 through the air supply pipe 21. The airflow can be guided to the surrounding area to the maximum extent, so that the hot airflow can flow into the drying chamber 4 as evenly as possible in the airflow chamber 42.

[0037] like Figure 7 , 8As shown, this utility model has multiple vertical partitions 61 inside the material distribution bin 6, which divide the inside of the material distribution bin 6 into multiple vertical sections 62. Multiple material distribution rollers 63 are provided inside the material distribution bin 6, and each material distribution roller 63 is provided with several material feeding plates 64. When the material distribution rollers 64 rotate, they quantitatively and evenly distribute the grain in the upper part of the material distribution bin 6 and guide it downward. This structure can avoid the impact on the conveyor belt caused by the instantaneous and disorderly falling of materials in the drying bin 4.

[0038] The conveyor belt described in this utility model is inclined and is located inside the conveyor platform 8. The end of the conveyor platform 8 is inclined and raised. The bottom of the material distribution bin 6 is also inclined to form an inclined discharge port 65. This design, together with the material distribution bin 6, can prevent materials from falling and pouring to the bottom of the elevator.

[0039] This utility model also includes a ladder 58 on the elevator 5, and a top operating area 27 on the top of the elevator 5. A top feeding hopper 53 is located below the top operating area 27. The top feeding hopper 53 switches between an internal feeding port 54 and an external feeding port 55 via a control valve 7. In this embodiment, the control valve 7 includes a hinged swing plate 71, which is hinged between the internal feeding port 54 and the external feeding port 55. Positioning baffles I 72 and II 73 are respectively provided on the internal feeding port 54 and the external feeding port 55, overlapping with the swing plate 71. Guide grooves 74 are provided on the front and rear side walls of the top feeding hopper, and the guide grooves 74 cooperate with the protrusions at the ends of the swing plate 71 to guide the swinging motion. The operator can apply force to pull the rope 75 to block the swing plate 71 from either the internal feeding port 54 or the external feeding port 55.

[0040] The external feeding port 55 is connected to the external hose 56, through which the dried grain is guided to the outside.

[0041] When this utility model is in operation, a drying cycle is formed by the elevator 5, drying chamber 4, collection chamber 48, distribution chamber 6, and conveyor 8. After the grain is dried, the swing plate 71 is blocked by the force-pulling rope 75 to block the internal feeding port 54. This external feeding port 55 is connected to the external hose 56 to guide the dried grain to the outside.

[0042] Through the above-mentioned design, this invention can achieve large-area ventilation and guide hot air to the drying chamber, which can effectively improve the drying efficiency of grain.

Claims

1. A grain dryer, characterized in that: It includes a vertical drying chamber, a heater, a fan, and an elevator; the sidewalls of the drying chamber are made of perforated plates, and an airflow chamber is vertically arranged in the center of the drying chamber. The airflow chamber is connected to the air outlet of the fan. The sidewalls and top of the airflow chamber are made of perforated plates or mesh structures; the top surface of the airflow chamber is set with a conical top; the fan connects the heater to the airflow chamber; a material collection chamber is set at the bottom of the drying chamber, and a material distribution chamber is set at the bottom of the material collection chamber. A conveyor belt is set below the material distribution chamber; an elevator is set in conjunction with the drying chamber, and an external receiving port is set at the bottom of the elevator. The bottom of the elevator is also connected to the end of the conveyor belt; a top feeding chamber is set at the top of the elevator, and an internal feeding port and an external feeding port are set on the top feeding chamber. A control valve is set between the internal feeding port and the external feeding port.

2. The grain dryer according to claim 1, characterized in that: The drying chamber is arranged in multiple vertical sections, and the airflow chamber is also arranged in multiple vertical sections. An external support rod is provided between the inner wall of the drying chamber and the outer wall of the airflow chamber. A central column is provided in the middle of the airflow chamber, and the top of the central column is connected to the cone top. Several internal support rods are provided between the central column and the interior of the airflow chamber.

3. A grain dryer according to claim 1, characterized in that: An air supply pipe extends from the fan and extends into the drying chamber. A distribution plate is provided at the end of the air supply pipe, and several through holes are provided on the distribution plate for axial ventilation.

4. A grain dryer according to claim 1, characterized in that: The material distribution bin is equipped with multiple vertical partitions, which divide the inside of the material distribution bin into multiple vertical sections; the material distribution bin is equipped with multiple material distribution rollers, and the material distribution rollers are equipped with several material feeding plates.

5. A grain dryer according to claim 1, characterized in that: The conveyor belt is inclined, and its end is inclined and lifted.

6. A grain dryer according to claim 1, characterized in that: This grain dryer is equipped with a mobile platform, which has a traction end that can be connected to an external traction vehicle to achieve on-site towing.

7. A grain dryer according to claim 1, characterized in that: A flow guide is provided on the top surface of the cone to prevent the grain from impacting and damaging the cone.

8. A grain dryer according to claim 1, characterized in that: The control valve includes a hinged swing plate, which is hinged between the internal feed port and the external feed port. Both the internal and external feed ports are provided with positioning baffles that overlap with the swing plate. The front and rear side walls of the top feed hopper, or at least one side of the front and rear side walls, are provided with guide grooves. The guide grooves cooperate with the protrusions at the ends of the swing plate to guide the swing.

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