Impurity and sieve removing device of grain drying machine

Abstract

The utility model discloses an impurity removal and screen removal device of a grain drying machine, which belongs to the technical field of agricultural machinery and comprises a barrel, a support frame is arranged at one end of the barrel, a through hole is arranged on the support frame, an annular screen is arranged in the through hole, a cavity communicated with screen holes of the annular screen is arranged in the support frame, and the annular screen is arranged in the cavity. A cavity is formed in the upper portion of the supporting frame, an impurity discharging opening communicated with the cavity is formed in the lower portion of the supporting frame, a screen drum is arranged at the end, away from the conveying motor, of the drum body, a high-pressure fan is communicated with the end, away from the drum body, of the screen drum, two circular screen plates are arranged in the screen drum, and grains enter the supporting frame through the feeding opening and then are externally connected with the fan through an air opening. And impurities are removed in cooperation with the annular screen, the screened impurities enter the cavity and then are discharged from the impurity discharging opening, the structure and the drying machine are integrally arranged, drying and impurity removing are conducted synchronously, and the treatment efficiency of the drying machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a de-impurity and de-screening device for a grain dryer. Background Art

[0002] "Cereals" covers a wide range, including rice, wheat, millet, soybeans and other grains. Cereals include rice, wheat, millet, soybeans, etc., mainly plant seeds and fruits, and are the traditional staple food of many Asian people. Cereals do not only refer to the seeds of grass plants. To be more precise, in my country they can be roughly divided into two categories: cereals and beans. However, cereals have high humidity and cannot be stored directly. A certain amount of moisture needs to be dried before storage, which requires the use of a grain dryer. A grain dryer is a machine and equipment that reduces the moisture content of grain kernels. Its function is to create conditions for the vaporization of moisture in the grain, reduce the relative humidity of the air around the grain, and use the medium to encourage the grain to release water vapor, etc., effectively improving the efficiency of grain drying.

[0003] The grains harvested by harvesters generally contain more impurities. The existing grain dryers only dry the grains, and the impurity removal and drying of the grains need to be processed in steps. The grains cannot be dried and impurities removed quickly and effectively, which reduces the efficiency of grain processing. Utility Model Content

[0004] The technical problem to be solved by the utility model is the technical problem raised in the background technology, and provides an impurity removal and screening device for a grain dryer.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a dust removal and screening device of a grain dryer, comprising a cylinder and a mounting base plate, a conveying auger is rotatably provided in the cylinder, a conveying motor is provided on the mounting base plate, the output end of the conveying motor is connected to the conveying auger, an infrared heating tube is provided on the inner wall of the cylinder, an end of the cylinder close to the conveying motor is connected to a dust removal mechanism, the dust removal mechanism comprises a support frame located at one end of the cylinder, a through hole is provided on the support frame, an annular screen is provided in the through hole, a cavity connected to the sieve hole of the annular screen is provided in the support frame, a dust discharge port connected to the cavity is provided below the support frame, a screen drum is provided at the end of the cylinder away from the conveying motor, a high-pressure fan is provided at the end of the screen drum away from the cylinder, two circular sieve plates are provided in the sieve drum, and an anti-blocking mechanism is provided between the circular sieve plates.

[0006] As a further solution of the present invention, the anti-blocking structure includes a drive box located in the screen drum, a drive motor is provided in the drive box, a rotating rod is provided at the output end of the drive motor, a drive rod is provided at the end of the rotating rod away from the motor, moving rods are slidingly provided on both sides of the drive box close to the circular screen plate, a drive frame is provided between the ends of the moving rods extending into the drive box, the drive rod is located in the drive frame, and a vibration plate is provided at the ends of the moving rods extending out of the drive box.

[0007] As a further solution of the present invention, the support frame is externally connected to a fan, and an air outlet connected to an output end of the fan is opened on the support frame.

[0008] As a further solution of the present invention, the cylinder is tilted with an angle of -°.

[0009] As a further solution of the present invention, a reducer is provided at the output end of the conveying motor, and the conveying auger passes through a through hole and is connected to the output end of the reducer.

[0010] As a further solution of the present invention, the sieve holes of the sieve plate close to the high-pressure blower are smaller than the sieve holes on the sieve plate far from the high-pressure blower.

[0011] As a further solution of the present invention, a sealing plate for sealing the through hole is provided on the side of the support frame close to the conveying motor, and a feed port is connected to the sealing plate.

[0012] As a further solution of the present invention, a plurality of feeding openings uniformly distributed along the circumferential direction are provided on the cylinder body at a position close to the screen cylinder.

[0013] The advantages of this utility model compared with the prior art are:

[0014] 1. By setting up a debris removal mechanism, after the grain enters the support frame through the feed port, the impurities are removed by the external fan through the air outlet and the annular screen. The impurities under the screen enter the cavity and are then discharged from the impurity discharge port. This structure is integrated with the dryer, so that drying and impurity removal are processed simultaneously, thereby improving the processing efficiency of the dryer;

[0015] 2. The drying process is carried out by using infrared heating tubes and convection drying method formed by high-pressure fans, which improves the drying rate and drying uniformity. Two circular sieve plates are set in front of the fans. The first sieve plate allows debris to pass through and isolates the grains. The second sieve plate isolates the debris and only allows the wind generated by the fan to pass through, so that the debris is located between the two circular sieve plates, thereby preventing the debris from being sucked into the fan.

[0016] 3. By setting up an anti-blocking device, the driving motor drives the rotating rod to rotate. Under the limit of the moving rod, the driving rod pushes the driving frame to move back and forth, driving the vibrating plate to knock the two circular sieve plates back and forth, shaking off the debris blocked in the sieve holes and avoiding clogging of the circular sieve plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the impurity removal and screening device of the grain dryer of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of the internal structure of the impurity removal and screening device of the grain dryer.

[0019] Figure 3 The utility model is a structural diagram of the impurity removal mechanism of the impurity removal and screening device of the grain dryer.

[0020] Figure 4 The utility model is a schematic cross-sectional structure diagram of the impurity removal mechanism of the impurity removal and screening device of the grain dryer.

[0021] Figure 5 The utility model is a structural diagram of the anti-blocking mechanism of the impurity removal and screening device of the grain dryer.

[0022] As shown in the figure: 1. Cylinder; 2. Mounting base plate; 3. Conveying auger; 4. Conveying motor; 5. Support frame; 6. Through hole; 7. Annular screen; 8. Cavity; 9. Exhaust port; 10. Screen drum; 11. High-pressure fan; 12. Circular screen plate; 13. Drive box; 14. Drive motor; 15. Rotating rod; 16. Drive rod; 17. Moving rod; 18. Drive frame; 19. Vibrating plate; 20. Air outlet; 21. Reducer; 22. Sealing plate; 23. Reducer; 24. Discharge port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Combined with attachment Figure 1 The impurity removal and screening device of the grain dryer includes a cylinder 1 and an installation base plate 2. A conveying auger 3 is rotated in the cylinder 1, and a conveying motor 4 is provided on the installation base plate 2. The output end of the conveying motor 4 is connected to the conveying auger 3. An infrared heating tube is provided on the inner wall of the cylinder 1. The end of the cylinder 1 close to the conveying motor 4 is connected to a impurity removal mechanism. The impurity removal mechanism includes a support frame 5 located at one end of the cylinder 1, a through hole 6 is provided on the support frame 5, an annular screen 7 is provided in the through hole 6, a cavity 8 connected with the sieve hole of the annular screen 7 is provided in the support frame 5, and an impurity discharge port 9 connected with the cavity 8 is provided below the support frame 5. A sieve drum 10 is provided at the end of the cylinder 1 away from the conveying motor 4. A high-pressure fan 11 is provided at the end of the sieve drum 10 away from the cylinder 1. Two circular sieve plates 12 are provided in the sieve drum 10, and an anti-blocking mechanism is provided between the circular sieve plates 12.

[0026] As a further solution of the present invention, the anti-blocking structure includes a drive box 13 located in the screen drum 10, a drive motor 14 is provided in the drive box 13, a rotating rod 15 is provided at the output end of the drive motor 14, a drive rod 16 is provided at the end of the rotating rod 15 away from the motor, and moving rods 17 are slidably provided on both sides of the drive box 13 close to the circular sieve plate 12, a drive frame 18 is provided between the ends of the moving rods 17 extending into the drive box 13, the drive rod 16 is located in the drive frame 18, and a vibration plate 19 is provided at the ends of the moving rods 17 extending out of the drive box 13.

[0027] As a further solution of the present invention, the support frame 5 is externally connected to a fan, and an air outlet 20 connected to the output end of the fan is opened on the support frame 5. The external fan cooperates with the annular screen 7 to remove impurities, and the impurities screened out enter the cavity 8 and are then discharged from the impurity discharge port 9.

[0028] As a further solution of the present invention, the cylinder 1 is tilted, and the tilt angle is 2-4°.

[0029] As a further solution of the present invention, a reducer 21 is provided at the output end of the conveying motor 4, and the conveying auger 3 is connected to the output end of the reducer 21 through the through hole 6. The setting of the reducer 21 can reduce the rotation speed of the conveying auger 3 and reduce the conveying speed.

[0030] As a further solution of the present invention, the sieve holes of the circular sieve plate 12 close to the high-pressure fan 11 are smaller than the sieve holes on the circular sieve plate 12 away from the high-pressure fan 11. The circular sieve plate 12 away from the high-pressure fan 11 will allow debris to pass through and isolate the grains. The circular sieve plate 12 close to the high-pressure fan 11 will isolate the debris and only allow the wind force generated by the high-pressure fan 11 to pass through, so that the debris is located between the two circular sieve plates 12, thereby preventing the debris from being drawn into the high-pressure fan 11.

[0031] As a further solution of the present invention, a sealing plate 22 for sealing the through hole 6 is provided on the side of the support frame 5 close to the conveying motor 4 , and a feed port 23 is connected to the sealing plate 22 , through which grains enter.

[0032] As a further solution of the present invention, a plurality of discharge ports 24 are provided on the cylinder body 1 near the screen cylinder 10 and are evenly distributed along the circumference, and the dried grains are discharged from the discharge ports.

[0033] During the specific implementation of the present invention, grains are first fed into the device through the feed port, and the grains with impurities first fall onto the annular screen in the support frame. The wind port provided on the support frame is connected to an external blower, and the annular screen is used to screen and remove impurities, while the impurities screened out enter the cavity and are then discharged from the impurity discharge port. This structure is integrated with the dryer, so that drying and impurity removal are processed simultaneously, thereby improving the processing efficiency of the dryer.

[0034] At this time, the conveying motor drives the conveying auger to rotate, allowing the grains to pass through the infrared heating tubes on the inner wall of the cylinder for drying. At the same time, the high-pressure fan on the other side of the cylinder is running. The convection drying method formed by the high-pressure fan improves the drying rate and drying uniformity, and is finally discharged from the discharge port. In front of the fan, there are two circular sieve plates. The first sieve plate allows debris to pass through and isolates the grains. The second sieve plate isolates the debris and only allows the wind generated by the fan to pass through, so that the debris is located between the two circular sieve plates, thereby preventing the debris from being sucked into the fan.

[0035] When the circular sieve plate is blocked, turn off the power of the dryer and stop working, then start the drive motor to drive the rotating rod to rotate. Under the limit of the moving rod, the drive rod pushes the drive frame to move back and forth, driving the vibration plate to knock the two circular sieve plates back and forth, shaking off the debris blocked in the sieve holes, thereby solving the problem of circular sieve plate blockage.

[0036] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A grain drying machine impurity removal and screening device, comprising a cylinder (1) and a mounting base (2), wherein a conveying auger (3) is rotatably provided in the cylinder (1), a conveying motor (4) is provided on the mounting base (2), an output end of the conveying motor (4) is connected to the conveying auger (3), and an infrared heating tube is provided on the inner wall of the cylinder (1), characterized in that: The end of the cylinder (1) close to the conveying motor (4) is connected to a debris removal mechanism, and the debris removal mechanism includes a support frame (5) located at one end of the cylinder (1), a through hole (6) is provided on the support frame (5), an annular screen (7) is provided in the through hole (6), a cavity (8) connected to the sieve hole of the annular screen (7) is provided in the support frame (5), and an impurity discharge port (9) connected to the cavity (8) is provided below the support frame (5). The end of the cylinder (1) away from the conveying motor (4) is provided with a sieve drum (10), and the end of the sieve drum (10) away from the cylinder (1) is connected to a high-pressure fan (11), and two circular sieve plates (12) are provided in the sieve drum (10), and an anti-blocking mechanism is provided between the circular sieve plates (12).

2. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: The anti-blocking mechanism comprises a driving box (13) located in the screen drum (10), a driving motor (14) is provided in the driving box (13), a rotating rod (15) is provided at the output end of the driving motor (14), a driving rod (16) is provided at one end of the rotating rod (15) away from the motor, a moving rod (17) is slidably provided on both sides of the driving box (13) close to the circular screen plate (12), a driving frame (18) is provided between one end of the moving rod (17) extending into the driving box (13), the driving rod (16) is located in the driving frame (18), and a vibration plate (19) is provided at one end of the moving rod (17) extending out of the driving box (13).

3. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: The support frame (5) is externally connected to a fan, and an air outlet (20) connected to an output end of the fan is provided on the support frame (5).

4. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: The cylinder (1) is arranged in an inclined manner, with an inclination angle of 2-4°.

5. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: The output end of the conveying motor (4) is provided with a reducer (21), and the conveying auger (3) passes through the through hole (6) and is connected to the output end of the reducer (21).

6. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: The sieve holes of the circular sieve plate (12) close to the high-pressure blower (11) are smaller than the sieve holes on the circular sieve plate (12) far from the high-pressure blower (11).

7. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: A sealing plate (22) for sealing the through hole (6) is provided on one side of the support frame (5) close to the conveying motor (4), and a feed port (23) is connected to the sealing plate (22).

8. The impurity removal and screening device of the grain dryer according to claim 1, characterized in that: A plurality of discharge openings (24) evenly distributed along the circumference are provided on the cylinder (1) at a position close to the screen cylinder (10).

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