Threshing machine with screening function

Abstract

The utility model relates to the technical field of agricultural mechanical equipment, in particular to a threshing machine with a screening function, which is characterized in that a screening net plate is fixedly connected to the lower side in a screening box, a shifting impeller is arranged on the left upper side of the screening net plate, and a bran collecting frame is arranged on the right side of the screening box; according to the grain and bran screening device, grains and bran can be received and screened under the action of the screening net plate, and part of the grains and part of the bran can be thrown to the right side at the same time through rotation of the stirring impeller; under the suction action of an air pump, air drives the chaff to enter a chaff collecting frame through a connecting frame, the grains fall down due to the large weight, then the grains can be separated from the chaff, the chaff is blocked in the chaff collecting frame through a filter screen frame, a rotating impeller can rotate through rotation of a control motor, and the chaff collecting frame can be separated from the chaff collecting frame; and therefore, the rice bran can be automatically discharged, and the device can conduct continuous threshing and screening treatment on the grains.

Description

Technical Field

[0001] The utility model relates to a thresher with a screening function, belonging to the technical field of agricultural machinery and equipment. Background Art

[0002] A thresher is a machine used for harvesting rice. It is mainly used to separate rice from straw. Its working principle is to separate grains from straw through mechanical force. The most commonly used methods are rolling and beating. Specifically, the thresher first sends the grain and straw mixture into the machine, and then uses the internal mechanism to perform pressing, rolling and other operations to separate the grains from the straw, and finally collect the grains.

[0003] The existing patent number CN221488400 is a thresher with a screening function. This device realizes an automatic screening function through the design of a screening box combined with a fan; lighter impurities such as rice chaff and straw debris are blown out by strong winds, and at the same time, the removed grains fall through the sieve holes on the second sieve plate, ensuring the purity and quality of rice. Farmers no longer need to carry out subsequent screening and impurity removal work, which reduces the labor burden. Through the arrangement of the chaff discharge pipe and the first cloth bag, the chaff can be collected in a centralized manner to avoid the chaff flying around and polluting the environment. The first cloth bag is detachable for easy cleaning and subsequent treatment. However, when this device is in use, although the first cloth bag used can separate the chaff, Straw debris and other impurities are collected, but as the debris is blown by the wind and adheres to the inner wall of the bag, it will block the exhaust gap, thereby affecting the opening of the one-way valve, and requiring manual disassembly and cleaning of the first bag repeatedly, thereby affecting the convenience of screening and removing impurities such as bran, and affecting the continuous threshing of grains; and although the buffer bucket and the second bag provided in this device can collect part of the grains in the straw, the straw is stacked on each other during the discharge process, and the grains inside cannot be effectively separated. At the same time, the thresher will carry part of the straw when separating the grains. When the weight of the straw is greater than the grains, effective wind screening cannot be performed, thereby affecting the final screening effect. Utility Model Content

[0004] The purpose of the present invention is to provide a thresher with a screening function to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A thresher with a screening function comprises a screening box, a bran collecting frame and a thresher case, wherein a screening mesh plate is fixedly connected to the inner lower side of the screening box, a material-discharging impeller is provided on the upper left side of the screening mesh plate, and the material-discharging impeller is rotatably connected to the screening box, a bran collecting frame is provided on the right side of the screening box, an air pump is sealed on the upper right end of the bran collecting frame, a discharge frame is sealed on the lower end of the bran collecting frame, the thresher case is sealed on the left upper end of the screening box, a material guide box is fixedly connected to the right end of the thresher case, and a beating blade is rotatably connected to the inner upper side of the material guide box.

[0007] Furthermore, a filter frame is fixedly connected to the interior of the chaff collecting frame, and a connecting frame is fixedly connected to the left end of the filter frame. The connecting frame passes through the left side wall of the chaff collecting frame, and the connecting frame is sealed to the screening box.

[0008] Furthermore, the front end of the discharge frame is fixedly connected to a control motor, the rear end of the output shaft of the control motor is fixedly connected to a rotating impeller, and the rotating impeller is rotationally connected to the discharge frame.

[0009] Furthermore, a feed hopper is fixedly connected to the upper left end of the threshing machine case, a threshing roller is provided inside the threshing machine case, a sprocket group is fixedly connected to the front end of the threshing roller, and the right end sprocket of the sprocket group is fixedly connected to the beating blade.

[0010] Furthermore, a first filter screen is fixedly connected to the inner upper side of the material guide box.

[0011] Furthermore, a fixed slope plate is fixedly connected to the upper end of the screening box, and a second filter screen plate is fixedly connected between the screening box and the fixed slope plate.

[0012] Furthermore, a driving motor is provided on the rear side of the material-discharging impeller, and the front end of the material-discharging impeller is fixedly connected to a pulley group, which is rotatably connected to the screening box, and the rear end of the upper pulley of the pulley group is fixedly connected to a material-discharging claw wheel, which is rotatably connected to the screening box, and the material-discharging claw wheel is slidably connected to the second filter screen plate.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can receive and screen the grains and bran by setting the screening mesh plate, and some grains can fall directly downward, and some grains and bran can be thrown to the right at the same time by rotating the material-dispensing impeller, and air flow can be formed inside by the suction action of the air pump, so that the gas drives the bran to enter the bran collecting frame through the connecting frame, and the grains will fall due to their large weight, so that the grains can be separated from the bran, and the bran can be blocked in the bran collecting frame by the provided filter mesh frame, and the rotating impeller can be rotated by rotating the control motor, so that the bran can be automatically discharged without manual repeated cleaning, so that the device can sort the grains. The utility model performs continuous threshing and screening processing. The utility model utilizes the function of the threshing machine box to separate the grains of grains, and after the rice straw is transported to the right side material guide box, the rotation of the threshing roller inside the threshing machine box can drive the sprocket group to rotate, so that the beating blade can rotate, and the grains mixed in the rice straw can be knocked off, and the grains are sent to the top of the second filter plate through the function of the fixed ramp plate, and the function of the set pulley group can make the material-discharging impeller drive the material-discharging claw wheel to rotate, and the wide and flat long straw in the threshed grains can be sent to the left, and part of the straw in the grains can be automatically screened, thereby ensuring the final screening effect of the thresher after threshing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a front view of a thresher with screening function according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the installation structure of a screening box of a thresher with screening function according to the present invention;

[0018] Figure 3 This is a cross-sectional view of the installation structure of the chaff collecting frame and the discharging frame of the thresher with screening function of the utility model;

[0019] Figure 4 This is a cross-sectional view of the installation structure of the material guide box and the beating blade of a thresher with screening function in the utility model;

[0020] Numbers in the figure: 1. Screening box; 2. Screening mesh plate; 3. Material-discharging impeller; 4. Brack collecting frame; 5. Air pump; 6. Discharge frame; 7. Thresher box; 8. Material guide box; 9. Beating blade; 10. Filter mesh frame; 11. Connecting frame; 12. Control motor; 13. Rotating impeller; 14. Feed hopper; 15. Sprocket assembly; 16. First filter mesh plate; 17. Fixed ramp plate; 18. Second filter mesh plate; 19. Material-discharging claw wheel; 20. Pulley assembly. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1, please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0023] A thresher with a screening function comprises a screening box 1, a bran collecting frame 4 and a thresher box 7. A screening mesh plate 2 is fixedly connected to the lower inner side of the screening box 1, a material-dispensing impeller 3 is provided on the upper left side of the screening mesh plate 2, and the material-dispensing impeller 3 is rotatably connected to the screening box 1. A bran collecting frame 4 is provided on the right side of the screening box 1, an air pump 5 is sealedly connected to the upper right end of the bran collecting frame 4, and a discharge frame 6 is sealedly connected to the lower end of the bran collecting frame 4. A filter mesh frame 10 is fixedly connected to the inside of the bran collecting frame 4, and a connecting frame 11 is fixedly connected to the left end of the filter mesh frame 10. The connecting frame 11 passes through the left side wall of the bran collecting frame 4 and is sealed to the screening box 1. The front end of the discharge frame 6 is fixedly connected to a control motor 12, and the rear end of the output shaft of the control motor 12 is fixedly connected to a rotating impeller 13 The rotating impeller 13 is rotatably connected to the discharge frame 6, and the screening mesh plate 2 is provided to receive and screen the grains and bran. Some grains can fall directly downward, and by rotating the material-dispensing impeller 3, some grains and bran can be thrown to the right at the same time. The suction action of the air pump 5 can form an air flow inside, and the gas drives the bran through the connecting frame 11 into the bran collecting frame 4, and the grains will fall due to their large weight, and thus the grains can be separated from the bran, and the bran can be blocked in the bran collecting frame 4 by the provided filter frame 10, and the rotating impeller 13 can be rotated by rotating the control motor 12, so that the bran can be automatically discharged without manual repeated cleaning, so that the device can continuously thresh and screen the grains.

[0024] Example 2, please refer to Figure 1 、 Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that: the left side of the upper end of the screening box 1 is sealed and connected to the threshing machine case 7, the right end of the threshing machine case 7 is fixedly connected to the guide box 8, the upper side of the inner part of the guide box 8 is rotatably connected to the beating blade 9, the upper left end of the threshing machine case 7 is fixedly connected to the feed hopper 14, the threshing machine case 7 is provided with a threshing roller, the front end of the threshing roller is fixedly connected to the sprocket group 15, the right end sprocket of the sprocket group 15 is fixedly connected to the beating blade 9, the upper side of the inner part of the guide box 8 is fixedly connected to the first filter screen plate 16, the upper end of the screening box 1 is fixedly connected to the fixed ramp plate 17, and the second filter screen plate 18 is fixedly connected between the screening box 1 and the fixed ramp plate 17. The rear side of the material discharging impeller 3 is provided with a driving motor, and the front end of the material discharging impeller 3 is fixedly connected to the pulley group 20, which is rotatably connected to the screening box 1, and the upper side sliding of the pulley group 20 The rear end of the wheel is fixedly connected with a material-discharging claw wheel 19, which is rotatably connected to the screening box 1 and slidably connected to the material-discharging claw wheel 19 and the second filter screen plate 18. The threshing machine box 7 can be used to separate the grains, and after the straw is transported to the right guide box 8, the rotation of the threshing roller inside the threshing machine box 7 can drive the sprocket group 15 to rotate, so that the beating blade 9 can rotate, and then the grains mixed in the straw can be knocked off, and the grains are sent to the top of the second filter screen plate 18 through the action of the fixed ramp plate 17, and the pulley group 20 can be used to make the material-discharging impeller 3 drive the material-discharging claw wheel 19 to rotate, so that the wide and long straw in the threshed grains can be sent to the left, and part of the straw in the grains can be automatically screened, thereby ensuring the final screening effect of the thresher after threshing.

[0025] The working principle of the present invention is as follows: when the device is in use, the screening mesh plate 2 is provided to receive and screen the grains and bran, and some of the grains can fall directly downward, and some of the grains and bran can be thrown to the right at the same time by rotating the material-dispensing impeller 3, and the suction action of the air pump 5 can form an air flow inside, and then the gas drives the bran to pass through the connecting frame 11 into the bran collecting frame 4, and the grains will fall due to their large weight, and thus the grains can be separated from the bran, and the bran can be blocked in the bran collecting frame 4 by the provided filter frame 10, and the rotating impeller 13 can be rotated by rotating the control motor 12, so that the bran can be automatically discharged, and there is no need for manual repeated cleaning, so that the device can be used for storage and recycling. The device can continuously thresh and screen the grains, and utilize the threshing machine box 7 to separate the grains. After the straw is transported to the right guide box 8, the rotation of the threshing roller inside the threshing machine box 7 can drive the sprocket group 15 to rotate, so that the beating blade 9 can rotate, and the grains mixed in the straw can be knocked off, and the grains are sent to the top of the second filter plate 18 through the action of the fixed ramp plate 17. The pulley group 20 can make the material-discharging impeller 3 drive the material-discharging claw wheel 19 to rotate, and the wide, flat and long straw in the threshed grains can be sent to the left, and part of the straw in the grains can be automatically screened, ensuring the final screening effect of the thresher after threshing.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thresher with a screening function, comprising a screening box (1), a chaff collecting frame (4) and a thresher box (7), characterized in that: The lower side of the interior of the screening box (1) is fixedly connected to a screening mesh plate (2), the upper left side of the screening mesh plate (2) is provided with a material-dispensing impeller (3), and the material-dispensing impeller (3) is rotatably connected to the screening box (1). A chaff collecting frame (4) is provided on the right side of the screening box (1), the upper right side of the chaff collecting frame (4) is sealedly connected to an air pump (5), the lower end of the chaff collecting frame (4) is sealedly connected to a discharge frame (6), the upper left side of the screening box (1) is sealedly connected to a threshing machine box (7), the right end of the threshing machine box (7) is fixedly connected to a material guide box (8), and the upper inner side of the material guide box (8) is rotatably connected to a beating blade (9).

2. A thresher with screening function according to claim 1, characterized in that: A filter frame (10) is fixedly connected to the interior of the bran collecting frame (4), and a connecting frame (11) is fixedly connected to the left end of the filter frame (10). The connecting frame (11) passes through the left side wall of the bran collecting frame (4), and the connecting frame (11) is sealed to the screening box (1).

3. The thresher with screening function according to claim 1, characterized in that: The front end of the discharge frame (6) is fixedly connected to a control motor (12), the rear end of the output shaft of the control motor (12) is fixedly connected to a rotating impeller (13), and the rotating impeller (13) is rotationally connected to the discharge frame (6).

4. The thresher with screening function according to claim 1, characterized in that: The upper left end of the threshing machine box (7) is fixedly connected to a feed hopper (14), and a threshing roller is provided inside the threshing machine box (7). The front end of the threshing roller is fixedly connected to a sprocket group (15), and the right end sprocket of the sprocket group (15) is fixedly connected to the beating blade (9).

5. The thresher with screening function according to claim 1, characterized in that: A first filter screen plate (16) is fixedly connected to the inner upper side of the material guide box (8).

6. The thresher with screening function according to claim 1, characterized in that: A fixed slope plate (17) is fixedly connected to the upper end of the screening box (1), and a second filter screen plate (18) is fixedly connected between the screening box (1) and the fixed slope plate (17).

7. The thresher with screening function according to claim 1, characterized in that: A driving motor is provided on the rear side of the material-discharging impeller (3); a pulley block (20) is fixedly connected to the front end of the material-discharging impeller (3); the pulley block (20) is rotatably connected to the screening box (1); a material-discharging claw wheel (19) is fixedly connected to the rear end of the upper pulley of the pulley block (20); the material-discharging claw wheel (19) is rotatably connected to the screening box (1); and the material-discharging claw wheel (19) is slidably connected to the second filter screen plate (18).

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