Threshing machine with winnowing mechanism

By introducing an air separation mechanism into the thresher, impurities and dust in corn kernels are automatically removed using wind power, solving the problems of automatic impurity removal and dust pollution prevention after threshing, and realizing automated impurity removal and clean production.

CN224538865UActive Publication Date: 2026-07-24ZHENGZHOU HONGHU MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGZHOU HONGHU MASCH CO LTD
Filing Date
2025-09-04
Publication Date
2026-07-24

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Abstract

The utility model discloses a thresher with winnowing mechanism, including the box, the bottom fixedly connected with the support of box, the top fixedly connected with the feed port of box, the inside top of box is provided with threshing bin, the inside movable joint of threshing bin has the rotary drum, the bottom of box is provided with the discharge gate, the inside of discharge gate is provided with the winnowing mechanism for removing the impurity. This thresher with winnowing mechanism is provided with the guide port, and the dry corn falls into the inside of discharge gate through the guide port after completing threshing in the inside of threshing bin, and the corn kernel is started after entering the inside of discharge gate, and the fan runs, and the fan produces the wind force and removes the impurity in the corn kernel, and the guide slide plate in the inside of discharge gate can effectively reduce the speed of corn kernel through the inside of discharge gate, thereby providing sufficient time for removing the impurity, to improve the effect of removing the impurity, and solve the problem of not automatic removal of the impurity.
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Description

Technical Field

[0001] This utility model relates to the field of threshing machine technology, specifically a threshing machine with an air separation mechanism. Background Technology

[0002] A thresher is a piece of equipment used to process dried crops. It can separate the fruit kernels of crops from the dry straw. It is commonly used in the processing of crops such as corn, wheat, and rice. In particular, in the corn processing field, using a thresher instead of manual threshing can effectively improve the threshing efficiency of corn and the threshing effect is good.

[0003] However, the threshers currently used for corn processing still have some defects in use. They cannot automatically remove impurities such as straw fragments and corn silk mixed in during threshing, which means that impurity removal is still required after threshing.

[0004] A novel thresher with an air separation mechanism is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a threshing machine with an air separation mechanism to solve the problem of not being able to automatically remove impurities mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a threshing machine with an air separation mechanism, comprising a box body, a support column fixedly connected to the bottom end of the box body, a feed inlet fixedly connected to the top end of the box body, a threshing chamber provided at the top end of the box body, a rotating drum movably connected inside the threshing chamber, a discharge port provided at the bottom end of the box body, and an air separation mechanism for removing impurities provided inside the discharge port;

[0007] The air separation mechanism includes a material guide slide plate. Material guide slide plates are fixedly connected to both sides inside the discharge port. A side groove is opened on one side of the box body. An installation plate is fixedly connected inside the side groove. A fan is fixedly connected to one side of the installation plate. A material guide port is opened at the bottom of the threshing chamber.

[0008] As a further technical solution of this utility model, the side groove is connected to the interior of the discharge port.

[0009] As a further technical solution of this utility model, the internal connection between the guide port and the discharge port is made, and the center line of the guide port and the center line of the threshing chamber are on the same vertical plane.

[0010] As a further technical solution of this utility model, a push plate is fixedly connected to the outside of the rotating drum, a threshing protrusion is fixedly connected to the inside of the threshing chamber, a cleaning port is fixedly connected to the top of one side of the box, a cover plate is movably connected to one side of the cleaning port, a fixing plate is fixedly connected to both ends inside the cleaning port, a support plate is fixedly connected to one end of the fixing plate, and a drive motor is fixedly connected to the top of the other side of the box.

[0011] As a further technical solution of this utility model, the output end of the drive motor passes through one side of the housing and is fixedly connected to the rotating drum, and the support plate is movably connected to the rotating drum.

[0012] As a further technical solution of this utility model, the impurity removal port is connected to the interior of the threshing chamber, and the center line of the support plate and the center line of the rotating drum are on the same horizontal plane.

[0013] As a further technical solution of this utility model, an installation groove is provided at the bottom of one side of the box body, and a collection box is movably connected inside the installation groove. A positioning plate is fixedly connected to one side of the collection box, and a blocking inclined plate is fixedly connected to the same side of both ends inside the collection box. Two sets of threaded rods are fixedly connected to both ends of one side of the box body, and a fixing nut is movably connected to the threaded rods through the positioning plate.

[0014] As a further technical solution of this utility model, the fixing nut is movably connected to the positioning plate, and the mounting groove is connected to the interior of the discharge port.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the threshing machine with the air separation mechanism not only realizes automatic impurity removal and convenient removal of threshed straw, but also realizes automatic collection of impurities to prevent dust generated during threshing from polluting the air;

[0016] (1) By setting up a guide port, a guide slide plate, a discharge port, a side trough, a mounting plate and a fan, the dried corn is threshed inside the threshing chamber and then falls into the discharge port through the guide port. After the corn kernels enter the discharge port, the fan is started to run. The fan generates air force to remove impurities from the corn kernels. The guide slide plate inside the discharge port can effectively reduce the speed of the corn kernels passing through the discharge port, thereby providing sufficient time for impurity removal and improving the impurity removal effect. This achieves automatic removal of impurities after threshing.

[0017] (2) By setting up a threshing chamber, cover plate, impurity removal port, push plate and rotating drum, when threshing, corn is put into the inside of the threshing chamber from the feed port, the drive motor is started to drive the rotating drum and push plate to rotate, the push plate can push the corn to cooperate with the threshing protrusion to scrape the corn kernels off, and the cover plate is opened at regular intervals to remove the corn stalks after threshing inside the threshing chamber through the impurity removal port, so as to prevent the stalks from affecting the subsequent threshing effect, thus realizing the convenient removal of corn stalks after threshing;

[0018] (3) By setting up a positioning plate, a collection box, an installation groove, a blocking inclined plate, a threaded rod and a fixing nut, during the impurity removal process, the wind blows the straw fragments and dust into the installation groove on one side. The collection box inside the installation groove can collect the impurities, and the blocking inclined plate inside the collection box can prevent the impurities from leaking out. After the threshing work is completed, rotate the fixing nut to pull the positioning plate inside the threshing threaded rod to pull the collection box out of the installation groove, thereby facilitating the cleaning of the impurities inside the collection box. This achieves automatic collection of impurities and prevents impurities from leaking out and polluting the air. Attached Figure Description

[0019] Figure 1 This is a frontal cross-sectional view of the present invention.

[0020] Figure 2 This is a side view cross-sectional structural diagram of the feed port of this utility model;

[0021] Figure 3 This is a side view cross-sectional structural diagram of the threshing bin of this utility model;

[0022] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Box body; 2. Threshing chamber; 3. Cover plate; 4. Fixing plate; 5. Impurity removal port; 6. Feed inlet; 7. Threshing protrusion; 8. Push plate; 9. Rotary drum; 10. Drive motor; 11. Guide port; 12. Positioning plate; 13. Collection box; 14. Mounting groove; 15. Blocking inclined plate; 16. Guide slide plate; 17. Discharge port; 18. Support column; 19. Side groove; 20. Mounting plate; 21. Fan; 22. Fixing nut; 23. Support plate; 24. Threaded rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 A threshing machine with an air separation mechanism includes a housing 1, a support column 18 fixedly connected to the bottom end of the housing 1, a feed inlet 6 fixedly connected to the top end of the housing 1, a threshing chamber 2 provided at the top inside the housing 1, a rotating drum 9 movably connected inside the threshing chamber 2, and a discharge port 17 opened at the bottom end of the housing 1. An air separation mechanism for removing impurities is provided inside the discharge port 17.

[0026] The air separation mechanism includes a guide slide plate 16. The guide slide plate 16 is fixedly connected to both sides inside the discharge port 17. A side groove 19 is opened on one side of the box body 1. An installation plate 20 is fixedly connected inside the side groove 19. A fan 21 is fixedly connected to one side of the installation plate 20. A guide port 11 is opened at the bottom of the threshing chamber 2. The side groove 19 is connected to the inside of the discharge port 17.

[0027] The internal connection between the feed inlet 11 and the discharge inlet 17 is such that the center line of the feed inlet 11 and the center line of the threshing chamber 2 are on the same vertical plane.

[0028] Furthermore, the fan 21 consists of an impeller, a housing, a motor, and other parts. The motor is firmly fixed to the impeller of the fan 21 through conventional mechanical connection methods, such as key connection, coupling connection, or direct shaft hole interference fit. After the fan 21 is powered on, the electromagnetic structure inside the motor drives the output shaft to rotate. Since the output shaft is fixedly connected to the impeller, it can directly drive the impeller to rotate, thereby generating wind power to achieve the function of wind separation and impurity removal.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, after the dried corn is threshed inside the threshing chamber 2, it falls into the discharge port 17 through the feed inlet 11. After the corn kernels enter the discharge port 17, the blower 21 is started. The blower 21 generates airflow to remove impurities from the corn kernels. The guide slide plate 16 inside the discharge port 17 can effectively reduce the speed of the corn kernels passing through the discharge port 17, thereby providing sufficient time for impurity removal and improving the impurity removal effect. This achieves automatic removal of impurities after threshing.

[0030] A push plate 8 is fixedly connected to the outside of the rotating drum 9, a threshing protrusion 7 is fixedly connected to the inside of the threshing chamber 2, a cleaning port 5 is fixedly connected to the top of one side of the box body 1, a cover plate 3 is movably connected to one side of the cleaning port 5, a fixing plate 4 is fixedly connected to both ends inside the cleaning port 5, a support plate 23 is fixedly connected to one end of the fixing plate 4, and a drive motor 10 is fixedly connected to the top of the other side of the box body 1.

[0031] The output end of the drive motor 10 passes through one side of the housing 1 and is fixedly connected to the rotating drum 9, while the support plate 23 is movably connected to the rotating drum 9;

[0032] The impurity removal port 5 is connected to the interior of the threshing chamber 2, and the center line of the support plate 23 is on the same horizontal plane as the center line of the rotating drum 9;

[0033] Specifically, such as Figure 1 and Figure 3 As shown, during threshing, corn is fed into the threshing chamber 2 through the feed inlet 6. The drive motor 10 is started to drive the rotating drum 9 and the push plate 8 to rotate. The push plate 8 can push the corn to scrape off the corn kernels with the threshing protrusions 7. The cover plate 3 is opened at regular intervals to remove the corn stalks after threshing through the impurity removal port 5, so as to prevent the stalks from affecting the subsequent threshing effect. This allows for the convenient removal of corn stalks after threshing.

[0034] A mounting groove 14 is provided at the bottom of one side of the box body 1. A collection box 13 is movably connected inside the mounting groove 14. A positioning plate 12 is fixedly connected to one side of the collection box 13. A blocking inclined plate 15 is fixedly connected to the same side of both ends inside the collection box 13. Two sets of threaded rods 24 are fixedly connected to both ends of one side of the box body 1. The threaded rods 24 pass through the positioning plate 12 and are movably connected to a fixing nut 22.

[0035] The fixing nut 22 is movably connected to the positioning plate 12, and the mounting groove 14 is connected to the interior of the discharge port 17;

[0036] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, during the impurity removal process, the wind blows straw fragments and dust into the installation groove 14 on one side. The collection box 13 inside the installation groove 14 can collect impurities, and the blocking inclined plate 15 inside the collection box 13 can prevent impurities from leaking out. After the threshing work is completed, rotate the fixing nut 22 to pull the positioning plate 12 back into the threshing threaded rod 24 to pull the collection box 13 out of the installation groove 14, thereby facilitating the cleaning of impurities inside the collection box 13. This achieves automatic collection of impurities and prevents impurities from leaking out and polluting the air.

[0037] Working Principle: In use, during threshing, corn is fed into the threshing chamber 2 through the feed inlet 6. The drive motor 10 is started, driving the rotating drum 9 and pusher plate 8 to rotate. The pusher plate 8 pushes the corn kernels, which, along with the threshing protrusions 7, scrape them off. The cover plate 3 is opened periodically, allowing the corn stalks removed from the threshing chamber 2 through the impurity removal port 5, preventing them from affecting subsequent threshing. After threshing, the dry corn falls into the discharge port 17 through the guide port 11. Once inside the discharge port 17, the fan 21 is activated, generating airflow to remove impurities from the corn kernels. Furthermore, the guide slide plate 16 inside the discharge port 17 can effectively reduce the speed of corn kernels passing through the discharge port 17, thereby providing sufficient time for impurity removal and improving the impurity removal effect. During the impurity removal process, the wind blows straw fragments and dust into the installation groove 14 on one side. The collection box 13 inside the installation groove 14 can collect impurities, and the blocking inclined plate 15 inside the collection box 13 can prevent impurities from leaking out. After the threshing work is completed, rotate the fixing nut 22 to pull the positioning plate 12 back into the threshing threaded rod 24 to pull the collection box 13 out of the installation groove 14, thereby facilitating the cleaning of impurities inside the collection box 13.

Claims

1. A threshing machine with an air separation mechanism, comprising a housing (1), characterized in that: The bottom end of the box (1) is fixedly connected to a support column (18), the top end of the box (1) is fixedly connected to a feed inlet (6), the top end of the box (1) is provided with a threshing chamber (2), the inside of the threshing chamber (2) is movably connected to a rotating drum (9), the bottom end of the box (1) is provided with a discharge port (17), and the inside of the discharge port (17) is provided with an air separation mechanism for removing impurities; The air separation mechanism includes a guide slide plate (16), and the guide slide plate (16) is fixedly connected to both sides inside the discharge port (17). A side groove (19) is opened on one side of the box body (1), and an installation plate (20) is fixedly connected inside the side groove (19). A fan (21) is fixedly connected to one side of the installation plate (20), and a guide port (11) is opened at the bottom of the threshing chamber (2).

2. A threshing machine with an air separation mechanism according to claim 1, characterized in that: The side groove (19) is connected to the inside of the discharge port (17).

3. A threshing machine with an air-separating mechanism according to claim 1, characterized in that: The feed inlet (11) is internally connected to the discharge inlet (17), and the center line of the feed inlet (11) is on the same vertical plane as the center line of the threshing chamber (2).

4. A thresher with an air-separation mechanism according to claim 1, characterized in that: A push plate (8) is fixedly connected to the outside of the rotating drum (9), a threshing protrusion (7) is fixedly connected to the inside of the threshing chamber (2), a cleaning port (5) is fixedly connected to the top of one side of the box (1), a cover plate (3) is movably connected to one side of the cleaning port (5), a fixing plate (4) is fixedly connected to both ends inside the cleaning port (5), a support plate (23) is fixedly connected to one end of the fixing plate (4), and a drive motor (10) is fixedly connected to the top of the other side of the box (1).

5. A threshing machine with an air-separating mechanism according to claim 4, characterized in that: The output end of the drive motor (10) passes through one side of the housing (1) and is fixedly connected to the rotating drum (9), and the support plate (23) is movably connected to the rotating drum (9).

6. A thresher with an air-separation mechanism according to claim 4, characterized in that: The impurity removal port (5) is connected to the interior of the threshing chamber (2), and the center line of the support plate (23) is on the same horizontal plane as the center line of the rotating drum (9).

7. A thresher with an air-separation mechanism according to claim 1, characterized in that: An installation groove (14) is provided at the bottom of one side of the box (1). A collection box (13) is movably connected inside the installation groove (14). A positioning plate (12) is fixedly connected to one side of the collection box (13). A blocking inclined plate (15) is fixedly connected to the same side of both ends inside the collection box (13). Two sets of threaded rods (24) are fixedly connected to both ends of one side of the box (1). The threaded rods (24) pass through the positioning plate (12) and are movably connected to a fixing nut (22).

8. A thresher with an air-separation mechanism according to claim 7, characterized in that: The fixing nut (22) is movably connected to the positioning plate (12), and the mounting groove (14) is connected to the interior of the discharge port (17).