Grain drying machine

Abstract

The utility model discloses a grain drying machine, belongs to the field of grain drying equipment, and can solve the problems that in a traditional grain drying machine, hot air cannot effectively penetrate through the whole layer of raw materials, the drying effect is concentrated on the lower portion of a barrel body, and the expected drying effect cannot be achieved. The hot air can be uniformly and quickly transferred to the grains to be dried, the stirring and lifting component has a stirring function and a lifting function, the grains can be lifted from the lower portion to the upper portion, the contact area between the hot air flow and the grains is increased, and the drying efficiency is further improved; according to the grain dryer, the circulating flow of grains is guaranteed, heat accumulation in some areas is avoided, the circulating holes in the inner barrel can effectively increase the circulating path of hot air flow, it is guaranteed that the hot air flow passes through each corner of the inner barrel, the grains are heated more evenly, the drying effect is improved, and the drying uniformity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grain drying equipment, specifically relates to a grain drying machine. BACKGROUND

[0002] Grain drying is an essential link in agricultural production, especially in the process of post-harvest grain storage and transportation, drying technology can effectively reduce the moisture content, prevent mildew and rot, and ensure the quality and safety of grain. However, in practical application, the traditional grain dryer often faces the problems of uneven drying effect, difficulty in hot air penetration, etc., resulting in low drying efficiency and increased energy consumption, which affects its actual use effect.

[0003] In the traditional grain dryer, hot air usually enters the drying chamber from the lower side of the barrel body, and the raw materials during the drying process are usually static. Due to the single and uneven flow mode of hot air entering, the hot air is densely gathered at the bottom of the barrel body, while the hot air flow at the upper part is relatively weak. This imbalance in design leads to uneven distribution of hot air during the drying process, and the phenomenon of "hot at the bottom and warm at the top" appears, that is, the hot air cannot effectively penetrate the entire level of raw materials, resulting in the drying effect concentrated at the lower part of the barrel body. This phenomenon not only reduces the working efficiency of the grain dryer, but sometimes also causes blockage, making it more difficult for hot air to enter other areas, so it cannot achieve the expected drying effect. SUMMARY

[0004] In order to solve the problem that in the traditional grain dryer, the hot air cannot effectively penetrate the entire level of raw materials, resulting in the drying effect concentrated at the lower part of the barrel body, and cannot achieve the expected drying effect, the present application provides a grain dryer to solve the above problems.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A grain dryer, comprising a frame component, a heating component and a barrel component, the frame component comprises a main frame and a fixed frame, the main frame is connected with a fixed seat, the heating component is installed on the top surface of the fixed seat, the fixed frame is arranged at least two and is fixed inside the main frame in an up-down position, the barrel component is fixed inside the two fixed frames, the heating component and the barrel component are communicated through a conveying pipe, and the barrel component is further provided with an agitating lifting component inside.

[0007] The agitating lifting component comprises a first bearing seat, a first driving motor, a lifting piece, an agitating piece, a feeding cylinder and a second bearing seat, the second bearing seat is installed on the upper end of the mounting hole formed in the center of the top of the cylinder component, the first bearing seat is installed on the second bearing seat, the first driving motor is installed on the top surface of the first bearing seat, the driving shaft of the first driving motor is respectively connected with a first transmission gear and a second transmission gear, the lifting piece and the agitating piece are respectively driven and connected with the first transmission gear and the second transmission gear, the feeding cylinder is installed on the agitating piece and located outside the lifting piece, and gear pressing sheets are further arranged on the top of the lifting piece and the agitating piece.

[0008] The feeding end and the discharging end of the cylinder component are further respectively provided with a feeding hopper and a discharging valve.

[0009] As a further improvement of the utility model, the cylinder component comprises a barrel cover, heat insulation side plates, an outer cylinder and an inner cylinder, the heat insulation side plates are semicircular cover shapes and at least two are arranged, the heat insulation side plates are screwed on the fixing frame, and the two heat insulation side plates are closed and connected through a pair of connecting plates, and the barrel cover is fixedly installed on the top surfaces of the two heat insulation side plates.

[0010] The outer cylinder and the inner cylinder are screwed on the top surface of the barrel cover, and a heat transfer chamber is arranged between the inner cylinder and the outer cylinder, and a plurality of flow-through holes for hot air flow are further formed in the outer wall of the inner cylinder.

[0011] As a further improvement of the utility model, the chamber between the outer cylinder and the heat insulation side plates is a heat insulation chamber, and the heat insulation chamber is filled with glass wool for heat preservation.

[0012] As a further improvement of the utility model, the cylinder component further comprises a discharging cover, the discharging cover penetrates through the heat insulation side plates, the outer cylinder and the inner cylinder and is arranged at the discharging end of the cylinder component, and the discharging valve is installed at the outlet of the discharging cover.

[0013] As a further improvement of the utility model, the lower end and the upper end of the feeding cylinder are further respectively provided with a feeding port and a discharging port, and the feeding hopper is in communication with the feeding cylinder corresponding to the feeding port.

[0014] As a further improvement of the utility model, the lifting piece comprises a first driven gear, a rotating shaft, a lifting dragon, a bottom end bearing seat and an auxiliary bearing, the first driven gear is meshed and connected with the first transmission gear, the rotating shaft penetrates through the agitating piece in cooperation with the auxiliary bearing, one end of the lifting dragon is rotationally connected to the bottom of the rotating shaft, the bottom end bearing seat is installed at the bottom of the feeding cylinder, and the other end of the lifting dragon is rotationally connected to the inside of the bottom end bearing seat.

[0015] As a further improvement of the utility model, the stirring member comprises a second driven gear, a stirring connecting disc, stirring blade plates and stirring long rods, the second driven gear is in meshing connection with the second transmission gear, the outer wall of the stirring connecting disc is in abutment with the second bearing seat, the inner wall of the stirring connecting disc is in abutment with the auxiliary bearing, the stirring blade plates are at least four and are arranged in a circumferential array on the stirring connecting disc respectively, the stirring long rods are arranged on the stirring blade plates, and the bottom rod body of each stirring long rod is inclinedly arranged corresponding to the bottom shape of the inner cylinder.

[0016] As a further improvement of the utility model, the upper end of the feeding cylinder is connected with the stirring connecting disc through a bearing, and the lower end of the feeding cylinder is fixedly connected with the inner cylinder through a flange plate.

[0017] As a further improvement of the utility model, the heating component comprises a centrifugal fan, a bearing plate, a second driving motor, a hot air blower and a connecting cover with open upper and lower end faces, the centrifugal fan is fixed on the top surface of the fixed seat, the bearing plate is installed on the side surface of the centrifugal fan, the second driving motor is installed on the top surface of the bearing plate and is in driving connection with the centrifugal fan, the hot air blower is connected to the air inlet end of the centrifugal fan, one end of the connecting cover is screwed with the air outlet of the centrifugal fan, and the other end of the connecting cover is screwed with the conveying pipe.

[0018] Compared with the prior art, the technical scheme of the utility model has the following advantages and effects:

[0019] 1. The hot air blower in the heating component is used to generate hot air flow, and then the hot air source is continuously introduced into the inner part of the cylinder component through the powerful driving of the centrifugal fan. Through efficient air flow conveying, it ensures that the hot air can be uniformly and rapidly transmitted to the grains to be dried. The stirring and lifting component not only has a stirring effect, but also has a lifting effect, which can lift the grains from the lower part to the upper part, increase the contact area of the hot air flow and the grains, further improve the drying efficiency, and specifically utilize the cooperation of the lifting member and the stirring member to ensure the circulation of the grains, avoid the accumulation of heat in some areas. The flow-through holes on the inner cylinder can effectively increase the flow-through path of the hot air flow, ensure that the hot air flow passes through every corner of the inner cylinder, thereby more uniformly heating the grains, and further improving the drying effect and the drying uniformity.

[0020] 2、In the application, the heat insulation chamber between the outer cylinder and the heat insulation side plate further isolates the heat loss of the external environment, ensures that the heating part can maximize its function. The chamber is filled with glass wool, which not only has good heat preservation effect, but also is environmentally friendly and durable. The cooperation of the feeding hopper and the discharge valve makes the feeding and discharging of the grains more smooth and accurate. During the feeding and discharging process, the grains can be effectively prevented from being blocked, and the continuous and stable operation of the dryer is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is the axonometric view of the present application;

[0023] Figure 2 is Figure 1 is the local enlarged view of A area in figure

[0024] Figure 3 is the axonometric view of the present application from another angle;

[0025] Figure 4 is the front view of the present application;

[0026] Figure 5 is the left view of the present application;

[0027] Figure 6 is the left view of the present application;

[0028] Figure 7 is Figure 6 is the sectional view along the section symbol A-A.

[0029] In the figure: 10, frame component; 110, main frame; 120, fixed frame; 20, heating component; 210, centrifugal fan; 220, bearing plate; 230, second drive motor; 240, hot air machine; 250, connecting cover; 30, conveying pipe; 40, barrel component; 410, barrel cover; 420, heat insulation side plate; 430, connecting plate; 440, outer barrel; 450, inner barrel; 470, flow-through hole; 480, discharge cover; 50, stirring lifting component; 510, first bearing seat; 520, first drive motor; 530, lifting piece; 5310, first driven gear; 5320, rotating shaft; 5330, lifting worm; 5340, bottom end bearing seat; 5350, auxiliary bearing; 540, stirring piece; 5410, second driven gear; 5420, stirring connecting disc; 5430, stirring blade plate; 5440, stirring long rod; 550, gear pressing sheet; 560, feeding barrel; 570, feeding port; 580, discharging port; 590, second bearing seat; 60, fixed seat; 70, feeding hopper; 80, discharging valve. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0032] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Embodiment:

[0037] A grain dryer comprises a frame part 10, a heating part 20 and a cylinder part 40, the frame part 10 comprises a main frame 110 and a fixed frame 120, a fixed seat 60 is connected on the main frame 110, the heating part 20 is installed on the top surface of the fixed seat 60, the fixed frame 120 is arranged at least two and is fixed inside the main frame 110 in an up-down position, the cylinder part 40 is fixed inside the two fixed frames 120, the heating part 20 and the cylinder part 40 are communicated through a conveying pipe 30, and the cylinder part 40 is further provided with an agitating lifting part 50 inside;

[0038] The stirring and lifting component 50 comprises a first bearing seat 510, a first driving motor 520, a lifting piece 530, a stirring piece 540, a feeding cylinder 560, and a second bearing seat 590 installed on the upper end of the mounting hole opened at the top center position of the cylinder component 40, the first bearing seat 510 is installed on the second bearing seat 590, the first driving motor 520 is installed on the top surface of the first bearing seat 510, the driving shaft of the first driving motor 520 is respectively connected with a first transmission gear and a second transmission gear, the lifting piece 530 and the stirring piece 540 are respectively driven and connected with the first transmission gear and the second transmission gear, the feeding cylinder 560 is installed on the stirring piece 540 and located outside the lifting piece 530, and a gear pressing plate 550 is further arranged on the top of the lifting piece 530 and the stirring piece 540.

[0039] The feeding end and the discharging end of the cylinder component 40 are respectively provided with a feeding hopper 70 and a discharging valve 80.

[0040] It is explained that the main frame body 110 and the fixed frame 120 are mainly used for supporting the structure of the entire drying machine, the fixed seat 60 is fixed on the main frame body 110 to provide stable support for the heating part, the heating component 20 promotes the drying of grains through the heating effect, the cylinder component 40 is the core part of the grain drying machine, responsible for containing grains and performing heating and drying treatment, the stirring and lifting component 50 ensures that the grains can be uniformly heated in the cylinder, thereby improving the drying efficiency, wherein the first driving motor 520 provides power to drive the stirring piece 540 and the lifting piece 530 to rotate, helping the grains to flow and turn inside the cylinder, the lifting piece 530 is responsible for lifting the grains from the bottom to the upper part to increase the contact with hot air, the stirring piece 540 is responsible for stirring the grains to prevent them from sticking together, thereby promoting the circulation of hot air and ensuring uniform drying, the feeding cylinder 560 is installed on the stirring piece 540 for introducing the grains from the feeding end into the cylinder, the gear pressing plate 550 is used to increase the friction to ensure the stable operation of the lifting piece 530 and the stirring piece 540, avoiding sliding or idling, the feeding hopper 70 is located at the feeding end of the cylinder component 40 and is responsible for feeding the grains into the drying machine, and the discharging valve 80 is located at the discharging end of the cylinder component 40 and is used to control the discharge of the dried grains, ensuring that the grains are orderly discharged after drying.

[0041] It is worth mentioning that first, the grain enters the inside of the barrel part 40 through the feed hopper 70, and then the first drive gear and the second drive gear are driven to rotate by the first drive motor 520, thereby driving the lifting member 530 and the stirring member 540 to work synchronously. The lifting member 530 is responsible for lifting the grain to the upper part of the barrel, and the stirring member 540 ensures that the grain is uniformly heated inside the barrel. In this way, the grain is fully dried inside the barrel. The dried grain is discharged through the discharge valve 80, and the whole drying process is completed. The design of the whole dryer aims to improve the drying efficiency while ensuring that the quality of the grain is not damaged during the drying process.

[0042] In combination with the drawings of the specification Figures 1-7 As shown, the barrel part 40 includes a barrel cover 410, heat insulation side plates 420, an outer barrel 440, and an inner barrel 450. The heat insulation side plates 420 are semi-circular cover shapes and are provided in at least two. The heat insulation side plates 420 are screwed on the fixed frame 120, and two heat insulation side plates 420 are closed and connected by a pair of connecting plates 430. The barrel cover 410 is fixedly installed on the top surface of the two heat insulation side plates 420.

[0043] The outer barrel 440 and the inner barrel 450 are both screwed on the top surface of the barrel cover 410, and a heat transfer chamber is provided between the inner barrel 450 and the outer barrel 440. A plurality of flow-through holes 470 for hot air to pass through are also provided on the outer wall of the inner barrel 450.

[0044] It is explained that the heat transfer chamber is provided to improve the drying efficiency. By forming a closed space between the inner barrel 450 and the outer barrel 440, the hot air circulates in the chamber, thereby more effectively transferring heat to the grain. In addition, the design of the flow-through holes 470 on the inner barrel 450 allows the hot air to uniformly pass through the grain layer, ensuring that the grain is fully and uniformly dried. This structural design of the barrel part 40 not only improves the drying efficiency, but also helps to reduce energy consumption, because the hot air is circulated in the chamber, reducing the loss of heat. In this way, the grain dryer can ensure the drying quality while realizing energy-efficient operation.

[0045] In combination with the drawings of the specification Figures 1-7 As shown, the chamber between the outer barrel 440 and the heat insulation side plate 420 is a heat insulation chamber, which is filled with glass wool for heat preservation. The use of glass wool is to further enhance the heat preservation performance of the dryer and ensure the stability of the temperature in the chamber, thereby providing a constant drying environment for the grain. Because glass wool has good heat insulation performance, it can effectively reduce the heat exchange between the inside and outside of the chamber, reduce the loss of heat energy, and improve the energy utilization rate during the drying process. In addition, the filling of glass wool can also reduce the overall weight of the dryer, facilitating the movement and installation of the equipment.

[0046] With reference to the accompanying drawings Figures 1-7 As shown, the barrel component 40 also includes a discharge cover 480, which is arranged through the heat-insulating side plate 420, the outer barrel 440, and the inner barrel 450, and is located at the discharge end of the barrel component 40. The discharge valve 80 is installed at the outlet of the discharge cover 480.

[0047] For illustration, the discharge cover 480 is arranged through the heat-insulating side plate 420, the outer barrel 440, and the inner barrel 450, and is located at the discharge end of the barrel component 40. The discharge cover 480 is used to guide the discharge (discharge) of grains or substances from the barrel, so its position is set at the discharge end of the barrel, which facilitates the discharge of grains. The discharge valve 80 is installed at the outlet of the discharge cover 480. The discharge valve 80 can be adjusted according to the working state of the dryer and the drying degree of the grains to control the discharge speed and amount of the grains. This design not only improves the operation flexibility of the dryer, but also helps to maintain the pressure and temperature in the chamber, ensuring the continuity and stability of the drying process. By precisely controlling the discharge valve 80, the drying quality of the grains can be further optimized to meet the drying needs of different types of grains.

[0048] Further worth mentioning is that the lower end and the upper end of the upper feeding barrel 560 are respectively provided with a feeding port 570 and a discharge port 580, and the feeding hopper 70 is in communication with the upper feeding barrel 560 corresponding to the feeding port 570.

[0049] With reference to the accompanying drawings Figures 1-7 As shown, the lifting member 530 includes a first driven gear 5310, a rotating shaft 5320, a lifting worm 5330, a bottom end bearing seat 5340, and an auxiliary bearing 5350. The first driven gear 5310 is meshingly connected with the first transmission gear. The rotating shaft 5320 passes through the agitating member 540 in cooperation with the auxiliary bearing 5350. One end of the lifting worm 5330 is rotatably connected to the bottom of the rotating shaft 5320. The bottom end bearing seat 5340 is installed at the bottom of the upper feeding barrel 560. The other end of the lifting worm 5330 is rotatably connected inside the bottom end bearing seat 5340.

[0050] It is illustrated that the first driven gear 5310 is connected with the first transmission gear through gear engagement. Through such engagement connection, mechanical power transmission is achieved, the rotating shaft 5320 cooperates with the auxiliary bearing 5350, penetrates the agitator 540, thereby driving the lifting dragon 5330 to rotate, the auxiliary bearing 5350 is located at the middle part of the rotating shaft 5320, plays a role of supporting and stabilizing the rotating shaft 5320, ensures that the rotating shaft 5320 can rotate smoothly, and will not fail due to wear or lack of support, the lifting dragon 5330 is used for lifting grains, and the lifting dragon 5330 can produce a lifting effect along with the rotation of the rotating shaft 5320 to lift the grains from a low place to a high place. The bottom end bearing seat 5340 can ensure that the lifting dragon 5330 rotates stably.

[0051] Specifically, the lifting dragon 5330 can effectively lift the grains from the bottom of the feeding cylinder 560 to the agitator 540, and then convey them to the inside of the cylinder body of the dryer. The engagement connection of the first driven gear 5310 and the first transmission gear ensures the smooth operation of the lifting member 530, and the cooperative use of the rotating shaft 5320 ensures the rotational movement of the lifting dragon 5330. The setting of the bottom end bearing seat 5340 not only provides stable support for the lifting dragon 5330, but also reduces friction during movement, prolongs the service life of the equipment. Through such structural design, the grain dryer can realize continuous and efficient grain conveying, thereby improving the overall drying efficiency.

[0052] In combination with the drawings Figures 1-7 It is illustrated that the agitator 540 includes a second driven gear 5410, an agitator connecting disc 5420, agitator leaf plates 5430 and agitator long rods 5440, the second driven gear 5410 is connected with the second transmission gear through engagement, the outer wall of the agitator connecting disc 5420 is in contact with the second bearing seat 590, the inner wall of the agitator connecting disc 5420 is in contact with the auxiliary bearing 5350, at least four agitator leaf plates 5430 are arranged in a circumferential array on the agitator connecting disc 5420, the agitator leaf plates 5430 are all provided with agitator long rods 5440, and the bottom rod body of each agitator long rod 5440 is correspondingly inclined to the bottom shape of the inner cylinder body 450. The upper end of the feeding cylinder 560 is connected with the agitator connecting disc 5420 through a bearing, and the lower end of the feeding cylinder 560 is fixedly connected with the inner cylinder body 450 through a flange plate.

[0053] It is explained that the second driven gear 5410 is engaged with the second transmission gear to transmit power through mutual engagement, and the stirring blade 5430 is used to help the material in the container to be stirred. The stirring blade 5430 is arranged in a circumferential array on the stirring connecting disc 5420. This arrangement enables the blade to uniformly stir the material when rotating, thereby improving the stirring efficiency. Each stirring blade 5430 is provided with a stirring rod 5440. The bottom of the stirring rod 5440 is inclined to correspond to the shape of the bottom of the inner cylinder 450, which can ensure uniform stirring, especially when processing the material at the bottom of the container, avoiding the phenomenon of material accumulation or uneven stirring. The upper end of the feeding cylinder 560 is connected to the stirring connecting disc 5420 through a bearing, and the lower end of the feeding cylinder 560 is fixedly connected to the inner cylinder 450 through a flange.

[0054] Specifically, in the present application, the engagement connection of the second driven gear 5410 and the second transmission gear ensures the stable rotation of the stirring part 540, thereby effectively stirring the grains and promoting heat exchange during the drying process. The close cooperation of the outer wall of the stirring connecting disc 5420 and the second bearing seat 590, and the contact of the inner wall with the auxiliary bearing 5350, jointly act on the stability and durability of the lifting worm 5330. The circumferential array design of the stirring blade 5430 enables the grains to be uniformly stirred and dried in the inner cylinder 450. The inclination of the bottom of each stirring rod 5440 avoids the phenomenon of material accumulation or uneven stirring. The connection of the upper end of the feeding cylinder 560 to the stirring connecting disc 5420 through a bearing ensures the smoothness of the feeding process, and the fixed connection of the lower end to the inner cylinder 450 through a flange ensures the tightness and sealing of the overall structure of the dryer. Such design not only improves the drying efficiency, but also ensures the continuity of the drying process and the uniformity of the grain quality.

[0055] In combination with the drawings Figures 1-7 As shown, the heating component 20 includes a centrifugal fan 210, a bearing plate 220, a second driving motor 230, a hot air machine 240, and a connection cover 250 with open upper and lower end faces. The centrifugal fan 210 is fixed to the top surface of the fixed seat 60. The bearing plate 220 is installed on the side surface of the centrifugal fan 210. The second driving motor 230 is installed on the top surface of the bearing plate 220 and is drivingly connected to the centrifugal fan 210. The hot air machine 240 is connected to the air inlet end of the centrifugal fan 210. One end of the connection cover 250 is screwed to the air outlet of the centrifugal fan 210, and the other end of the connection cover 250 is screwed to the conveying pipe 30.

[0056] For the purpose of illustration, the centrifugal fan 210 sucks in air and discharges the air flow through its rotating impeller, thereby creating a pressure difference in the air flow. The centrifugal fan 210 is fixed on the top surface of the fixed base 60. This mounting ensures stable operation of the fan and avoids failure due to vibration or instability. The carrier plate 220 is mounted on the side of the centrifugal fan 210 and serves to support and fix the centrifugal fan 210. The second driving motor 230 drives the rotation of the centrifugal fan 210. The hot air blower 240 is located at the air inlet end of the centrifugal fan 210. It is responsible for heating the air so that the air passing through the system can reach the required temperature. The connecting cover 250 is a sealing assembly, one end of which is screwed to the air outlet of the centrifugal fan 210, and the other end is connected to the conveying pipe 30. Its main function is to guide the air flow and ensure smooth transmission of the air flow between the centrifugal fan 210 and the conveying pipe 30. The conveying pipe 30 is responsible for conveying the already heated air to the area that needs to be heated.

[0057] The above description is merely preferred embodiments of the present application, and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A grain dryer comprising a housing section (10), a heating section (20) and a drum section (40), characterised in that: The frame body component (10) comprises a main frame body (110) and a fixing frame (120), the main frame body (110) is provided with a fixing seat (60), the heating component (20) is installed on the top surface of the fixing seat (60), the fixing frame (120) is arranged at least two and is fixed in the inside of the main frame body (110) in up and down positions, the cylinder body component (40) is fixed in the inside of the two fixing frames (120), the heating component (20) and the cylinder body component (40) are communicated through the conveying pipe (30), and the inside of the cylinder body component (40) is further provided with an agitating and lifting component (50). The agitating and lifting component (50) comprises a first bearing seat (510), a first driving motor (520), a lifting piece (530), an agitating piece (540), a feeding cylinder (560) and a second bearing seat (590), the second bearing seat (590) is installed on the upper end of the mounting hole arranged at the center position of the top of the cylinder body component (40), the first bearing seat (510) is installed on the second bearing seat (590), the first driving motor (520) is installed on the top surface of the first bearing seat (510), the driving shaft of the first driving motor (520) is respectively connected with a first transmission gear and a second transmission gear, the lifting piece (530) and the agitating piece (540) are respectively drivenly connected with the first transmission gear and the second transmission gear, the feeding cylinder (560) is installed on the agitating piece (540) and is located outside the lifting piece (530), and gear pressing plates (550) are further arranged on the top of the lifting piece (530) and the agitating piece (540). The feeding end and the discharging end of the cylinder body component (40) are further respectively provided with a feeding hopper (70) and a discharging valve (80).

2. A grain dryer as claimed in claim 1, wherein, The cylinder body component (40) comprises a barrel cover (410), heat insulation side plates (420), an outer cylinder body (440) and an inner cylinder body (450), the heat insulation side plates (420) are half-circular cover-shaped and are arranged at least two, the heat insulation side plates (420) are screwed on the fixing frame (120), and the two heat insulation side plates (420) are closedly connected through a pair of connecting plates (430), and the barrel cover (410) is fixedly installed on the top surfaces of the two heat insulation side plates (420). The outer cylinder body (440) and the inner cylinder body (450) are screwed on the top surface of the barrel cover (410), and the inner cylinder body (450) and the outer cylinder body (440) are separated by a heat transfer chamber, and a plurality of flow-through holes (470) for hot air flow are further arranged on the outer wall of the inner cylinder body (450).

3. A grain dryer as claimed in claim 2, wherein, The chamber between the outer cylinder body (440) and the heat insulation side plate (420) is a heat insulation chamber, and the heat insulation chamber is filled with glass wool for heat preservation.

4. A grain dryer as claimed in claim 3, wherein The barrel component (40) further comprises a discharge cover (480) penetrating through the heat insulation side plate (420), the outer barrel (440) and the inner barrel (450) and located at the discharge end of the barrel component (40), and the discharge valve (80) is installed at the outlet of the discharge cover (480).

5. A grain dryer as claimed in claim 4, wherein, The lower end and the upper end of the feeding barrel (560) are respectively provided with a feeding port (570) and a discharging port (580), and the feeding hopper (70) is in communication with the feeding barrel (560) corresponding to the feeding port (570).

6. A grain dryer as claimed in claim 5, wherein, The lifting member (530) comprises a first driven gear (5310), a rotating shaft (5320), a lifting worm (5330), a bottom end bearing seat (5340) and an auxiliary bearing (5350), the first driven gear (5310) is in meshing connection with the first transmission gear, the rotating shaft (5320) penetrates through the stirring member (540) in cooperation with the auxiliary bearing (5350), one end of the lifting worm (5330) is rotationally connected to the bottom of the rotating shaft (5320), the bottom end bearing seat (5340) is installed at the bottom of the feeding barrel (560), and the other end of the lifting worm (5330) is rotationally connected to the inside of the bottom end bearing seat (5340).

7. A grain dryer as claimed in claim 6, wherein The stirring member (540) comprises a second driven gear (5410), a stirring connecting disc (5420), stirring leaf plates (5430) and stirring long rods (5440), the second driven gear (5410) is in meshing connection with the second transmission gear, the outer wall of the stirring connecting disc (5420) is in abutment with the second bearing seat (590), the inner wall of the stirring connecting disc (5420) is in abutment with the auxiliary bearing (5350), at least four stirring leaf plates (5430) are arranged in a circumferential array on the stirring connecting disc (5420), the stirring leaf plates (5430) are all provided with the stirring long rods (5440), and the bottom rod body of each stirring long rod (5440) is obliquely arranged corresponding to the bottom shape of the inner barrel (450).

8. A grain dryer as claimed in claim 7, wherein The upper end of the feeding barrel (560) is connected with the stirring connecting disc (5420) through a bearing, and the lower end of the feeding barrel (560) is fixedly connected with the inner barrel (450) through a flange plate.

9. A grain dryer as claimed in claim 8, wherein, The heating component (20) comprises a centrifugal fan (210), a bearing plate (220), a second driving motor (230), a hot air blower (240) and a connection cover (250) with open upper and lower end faces, the centrifugal fan (210) is fixed on the top surface of the fixing base (60), the bearing plate (220) is installed on the side surface of the centrifugal fan (210), the second driving motor (230) is installed on the top surface of the bearing plate (220) and is drivingly connected with the centrifugal fan (210), the hot air blower (240) is connected to the air inlet end of the centrifugal fan (210), one end of the connection cover (250) is screwed with the air outlet of the centrifugal fan (210), and the other end of the connection cover (250) is screwed with the conveying pipe (30).

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