Threshing device

Abstract

The utility model relates to the technical field of threshing agricultural equipment, and discloses a threshing device which comprises a rack, a threshing box is arranged on the rack, a threshing assembly is rotationally arranged in the threshing box, a feeding port is formed in the head of the threshing box, an impurity discharging port is formed in the tail of the threshing box, and a screen is arranged at the bottom of the threshing box. A feed opening is formed in the threshing box corresponding to the lower part of the screen; a negative pressure impurity removal device is further arranged at the position, corresponding to the discharging opening, of the rack, the negative pressure impurity removal device comprises a negative pressure draught fan, the material suction end of the negative pressure draught fan is arranged at the discharging opening, light substances of threshing products can be further removed through the negative pressure impurity removal device, and the threshing effect of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of threshing agricultural machinery equipment, and particularly relates to a threshing device. Background Technique

[0002] Today, with the rapid development of agricultural mechanization, threshing, as a key link in the post-harvest processing of crops, its efficiency and effect are directly related to the income of farmers and the subsequent processing quality of crops. Traditional threshing devices often separate grains from ear axes only by means of mechanical friction or impact. However, in this process, impurities such as straw, dust, and broken leaves will inevitably be mixed in. These impurities not only increase the difficulty of subsequent grain cleaning, but may also have an adverse impact on the quality of grains.

[0003] With the continuous progress of agricultural technology and the growing demand of farmers for efficient and clean agricultural production, higher requirements are put forward for the performance of threshing devices. Especially in the context of modern agriculture that pursues high yields and high quality, how to effectively remove impurities in threshing products and improve threshing efficiency and grain purity has become an urgent problem to be solved.

[0004] At present, although there are various threshing devices on the market, most of them focus on improving threshing efficiency, but are still insufficient in impurity removal. Some devices try to separate impurities by adding simple structures such as sieve meshes, but the effect is limited. Especially for fine and light impurities, it is difficult to achieve an ideal removal effect.

[0005] Therefore, developing a threshing device that can efficiently and thoroughly remove impurities in threshing products is of great significance for improving agricultural production efficiency and ensuring grain quality. Content of the Utility Model

[0006] The purpose of the utility model is to provide a threshing device to solve the problems put forward in the above background technique. By introducing a negative pressure impurity removal device and using the suction force of a negative pressure fan, light substance impurities in threshing products can be effectively removed, thereby significantly improving the threshing effect and grain purity of the equipment.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A threshing device, including a frame, a threshing box is arranged on the frame, a threshing component is rotatably arranged in the threshing box, a feeding port is arranged at the head of the threshing box, a waste discharging port is arranged at the tail of the threshing box, a sieve mesh is arranged at the bottom of the threshing box, and a blanking port is opened at a position corresponding to the lower part of the sieve mesh in the threshing box; a negative pressure impurity removal device is also arranged on the frame at a position corresponding to the blanking port, and the negative pressure impurity removal device includes a negative pressure fan, and the material suction end of the negative pressure fan is arranged at the position of the blanking port for adsorbing light substances in threshing products.

[0008] To further optimize the present utility model, the following technical solutions can be preferably selected.

[0009] Preferably, a receiving platform is provided at the position corresponding to the blanking port on the frame. The receiving platform can swing horizontally back and forth. A discharge port is provided at the end of the receiving platform. The receiving platform is slidably arranged on the frame. A reciprocating driving mechanism is connected to the bottom of the receiving platform. By providing a receiving platform on the frame that can swing horizontally back and forth, the threshed grains can be more evenly distributed in the receiving hopper, avoiding the accumulation of materials at a certain position, thereby improving the collection efficiency of the materials. At the same time, the reciprocating swing of the receiving platform also helps to further separate the residual impurities in the materials, improving the purity of the materials; the discharge port provided at the end of the receiving platform, combined with its characteristic of horizontal reciprocating swing, enables users to flexibly adjust the discharge position according to actual needs, facilitating the direct transportation of the threshed grains to a designated collection container or processing equipment, improving the flexibility and automation degree of the production line.

[0010] Preferably, the receiving platform includes a receiving hopper. A track is arranged on the frame along the swinging direction of the receiving hopper. Track wheels that cooperate with the track are provided at the bottom. The feeding surface of the receiving hopper is inclined downward along the conveying direction; the receiving platform adopts a design with an inclined downward feeding surface, which helps the materials to naturally slide to the discharge port under the action of gravity and reciprocating swing, reducing the jamming and accumulation of materials during the conveying process, and improving the smoothness and efficiency of material conveying.

[0011] Preferably, the reciprocating driving mechanism includes a swinging motor arranged on the frame. The driving end of the swinging motor is connected with a cam. A connecting rod is arranged on the protruding part of the cam. A connecting seat is arranged at the bottom of the receiving hopper. A connecting swing arm is arranged between the connecting seat and the connecting rod. The two ends of the connecting swing arm are respectively hinged to the connecting rod and the connecting seat. The swinging motor drives the cam to rotate, thereby driving the receiving hopper to swing back and forth; by using simple and efficient mechanical structures such as a swinging motor, a cam, a connecting rod, and a connecting swing arm to realize the reciprocating swing of the receiving platform, not only simplifies the overall structure of the equipment, reduces the manufacturing cost, but also improves the reliability and durability of the equipment.

[0012] Preferably, the threshing assembly includes a threshing main shaft rotatably arranged in the threshing box. A plurality of support wheels are coaxially arranged on the threshing main shaft. A threshing frame is arranged axially between the support wheels. Threshing teeth are arranged outside the threshing frame. The threshing main shaft is connected with a driving source. A plurality of spiral fixed knives that cooperate with the threshing teeth are arranged at the top of the threshing box.

[0013] Preferably, the threshing main shaft is coaxially connected with the fan shaft of the negative pressure fan. The threshing assembly and the negative pressure fan share a driving source.

[0014] The beneficial effects of the threshing device capable of removing impurities are mainly reflected in the following aspects:

[0015] 1. Significantly improve the purity of threshing products: By introducing a negative pressure impurity removal device and utilizing the strong suction of the negative pressure fan, it can effectively adsorb and remove light material impurities such as straw debris, dust, and broken leaves in the threshing products, thus significantly improving the purity of the threshed grains and providing higher-quality raw materials for subsequent processing.

[0016] 2. Improve threshing efficiency: The coordinated operation of the negative pressure impurity removal device and the threshing component enables the impurities generated during the threshing process to be removed in a timely manner, reducing the accumulation and interference of impurities in the threshing box, helping to maintain the smooth operation of the threshing component, and thereby improving the overall threshing efficiency.

[0017] 3. Reduce subsequent cleaning costs: Since the impurities in the threshing products have been effectively removed, the workload and difficulty of subsequent cleaning of the grains are reduced, the cleaning costs are lowered, and at the same time, the labor intensity of farmers is also alleviated.

[0018] 4. Enhance equipment adaptability: This device is not only applicable to the threshing treatment of various crops but also can effectively meet the threshing requirements under different humidity, impurity content, etc., showing strong adaptability and flexibility.

[0019] 5. Promote the sustainable development of agriculture: By improving the purity and efficiency of threshing products, it helps to reduce the generation of agricultural waste, promote the rational utilization of agricultural resources and the development of circular economy, and contribute to the realization of the sustainable development of agriculture. Description of the Drawings

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the threshing device;

[0021] Figure 2 It is the front view of the threshing device;

[0022] Figure 3 It is a schematic internal structure diagram of the threshing device;

[0023] Figure 4 It is a schematic internal three-dimensional structure diagram of the threshing device.

[0024] Figure 5 It is a schematic three-dimensional structure diagram of the frame Figure 1 ;

[0025] Figure 6 It is a schematic three-dimensional structure diagram of the frame Figure 2 ;

[0026] Figure 7 It is an enlarged schematic diagram of the structure at A.

[0027] In the figure: 1 - frame; 2 - threshing box; 3 - feeding port; 4 - impurity discharge port; 5 - negative pressure impurity removal device; 6 - drive source; 7 - material receiving platform; 8 - discharge port; 9 - reciprocating drive mechanism; 10 - blanking port; 11 - threshing main shaft; 12 - support wheel; 13 - screen; 14 - threshing frame; 15 - threshing teeth; 16 - negative pressure fan; 17 - cam; 18 - connecting rod; 19 - connecting swing arm; 20 - connecting seat; 21 - track; 22 - track wheel. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-7 As shown, a technical solution provided by the present invention: a threshing device, including a frame 1, a threshing box 2 is installed on the frame, a threshing assembly is rotatably installed in the threshing box, a feeding port 3 is installed at the head of the threshing box, an impurity discharge port 4 is installed at the tail of the threshing box, a screen is installed at the bottom of the threshing box, and a blanking port 10 is opened at a position corresponding to the lower part of the screen below the threshing box; the crops to be threshed enter the threshing box 2 from the feeding port, after the breaking operation of the threshing assembly, the materials on the screen are discharged from the impurity discharge port at the tail, and the materials under the screen are discharged through the blanking port below the screen 13; wherein the threshing assembly includes a threshing main shaft rotatably installed in the threshing box, a plurality of support wheels 12 are coaxially installed on the threshing main shaft 11, a threshing frame 14 is installed axially between the support wheels, threshing teeth 15 are installed on the outer side of the threshing frame, the threshing main shaft is connected with a drive source, and a plurality of spiral fixed knives cooperating with the threshing teeth are installed at the top of the threshing box. A negative pressure impurity removal device 5 is also installed on the frame at a position corresponding to the blanking port. The negative pressure impurity removal device 5 includes a negative pressure fan 16, and the material suction end of the negative pressure fan is installed at the blanking port position for adsorbing light substances in the threshing products. Among them, the threshing main shaft is coaxially connected with the fan shaft of the negative pressure fan, and the threshing assembly and the negative pressure fan share a drive source 6 to ensure uniform gait.

[0030] Furthermore, a receiving platform 7 is installed at the position corresponding to the blanking opening on the frame. The products discharged from the blanking opening fall onto the receiving platform. The receiving platform can swing reciprocally in the horizontal direction. A discharge opening is installed at the end of the receiving platform. The receiving platform is slidably installed on the frame. The bottom of the receiving platform is connected with a reciprocating driving mechanism 9. The reciprocating driving mechanism 9 includes a swing motor installed on the frame. The driving end of the swing motor is connected with a cam 17. A connecting rod 18 is installed on the protruding part of the cam. A connecting seat 20 is installed at the bottom of the receiving hopper. A connecting swing arm 19 is installed between the connecting seat and the connecting rod. The two ends of the connecting swing arm are respectively hinged to the connecting rod and the connecting seat. The swing motor drives the cam to rotate, and then drives the receiving hopper to swing reciprocally. By adopting simple and efficient mechanical structures such as a swing motor, a cam, a connecting rod and a connecting swing arm to realize the reciprocating swing of the receiving platform, not only the overall structure of the equipment is simplified, the manufacturing cost is reduced, but also the reliability and durability of the equipment are improved. By installing a receiving platform on the frame that can swing reciprocally in the horizontal direction, the threshed grains can be more evenly distributed in the receiving hopper, avoiding the accumulation of materials at a certain position, thereby improving the collection efficiency of the materials. At the same time, the reciprocating swing of the receiving platform also helps to further separate the residual impurities in the materials and improve the purity of the materials. The discharge opening 8 installed at the end of the receiving platform 7, combined with its characteristic of reciprocating swing in the horizontal direction, enables the user to flexibly adjust the discharge position according to actual needs, facilitating the direct conveyance of the threshed grains to a designated collection container or processing equipment, and improving the flexibility and automation degree of the production line. Specifically, the receiving platform includes a receiving hopper. A track 21 is installed on the frame along the swinging direction of the receiving hopper. Track wheels 22 that cooperate with the track are installed at the bottom. The feeding surface of the receiving hopper is installed obliquely downward along the conveying direction. The receiving platform adopts the design of an obliquely downward feeding surface, which helps the materials to naturally slide to the discharge opening under the action of gravity and reciprocating swing, reducing the jamming and accumulation of materials during the conveying process and improving the smoothness and efficiency of material conveyance.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not serve to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A threshing device, comprising a frame, characterized in that: A threshing box is provided on the frame. A threshing component is rotatably arranged in the threshing box. A feeding port is arranged at the head of the threshing box. A waste discharging port is arranged at the tail of the threshing box. A sieve is arranged at the bottom of the threshing box. A blanking port is formed at a position corresponding to the lower part of the sieve in the threshing box. A negative pressure impurity removing device is further arranged on the frame at a position corresponding to the blanking port. The negative pressure impurity removing device includes a negative pressure fan. The material suction end of the negative pressure fan is arranged at the blanking port position and is used for adsorbing light substances in the threshed products.

2. The threshing device according to claim 1, characterized in that: A receiving platform is arranged on the frame at a position corresponding to the blanking port. The receiving platform can swing reciprocally in the horizontal direction. A discharging port is arranged at the end of the receiving platform. The receiving platform is slidably arranged on the frame. A reciprocating driving mechanism is connected to the bottom of the receiving platform.

3. The threshing device according to claim 2, wherein: The receiving platform includes a receiving hopper. A track is arranged on the frame along the swinging direction of the receiving hopper. Track wheels matched with the track are arranged at the bottom. The feeding surface of the receiving hopper is inclined downward along the conveying direction.

4. The threshing device according to claim 3, wherein: The reciprocating driving mechanism includes a swinging motor arranged on the frame. The driving end of the swinging motor is connected with a cam. A connecting rod is arranged on the protruding part of the cam. A connecting seat is arranged at the bottom of the receiving hopper. A connecting swing arm is arranged between the connecting seat and the connecting rod. The two ends of the connecting swing arm are respectively hinged to the connecting rod and the connecting seat. The swinging motor drives the cam to rotate, thereby driving the receiving hopper to swing reciprocally.

5. The threshing device according to claim 1, wherein: The threshing component includes a threshing main shaft rotatably arranged in the threshing box. A plurality of supporting wheels are coaxially arranged on the threshing main shaft. A threshing frame is arranged axially between the supporting wheels. Threshing teeth are arranged on the outer side of the threshing frame. The threshing main shaft is connected with a driving source. A plurality of spiral fixed knives matched with the threshing teeth are arranged at the top of the threshing box.

6. The threshing device according to claim 5, characterized in that: The threshing main shaft is coaxially connected with the fan shaft of the negative pressure fan. The threshing component and the negative pressure fan share a driving source.

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