Threshing device capable of removing impurities
By introducing a reciprocating swing design of the negative pressure decompression device and the feeding platform into the threshing device, the problem of low impurity removal efficiency in traditional threshing devices is solved, and efficient purity of the threshing products and convenient subsequent treatment are achieved.
Patent Information
- Application Number
- CN202422173885.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-05
AI Technical Summary
It is difficult for traditional threshing devices to effectively remove impurities during the threshing process, resulting in a decrease in the purity of the threshing product and increasing the difficulty and cost of subsequent processing.
A threshing device including a negative pressure decompression device is designed to automatically remove light substances in the threshing product by using the suction force of the negative pressure fan, and combine with the lateral reciprocating swing of the feeding platform to increase the contact area between the light substances and air.
Automatic and efficient removal of impurities in the threshing products is achieved, the purity of the threshing products is improved, the labor intensity and cost of subsequent processing is reduced, and the adaptability of the equipment is enhanced.
Smart Images
Figure CN222967470U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of threshing agricultural machinery equipment, in particular to a threshing device capable of removing impurities. Background Art
[0002] Today, with the rapid development of agricultural mechanization, threshing is a key link in the post-harvest processing of crops, and its efficiency and effect directly affect the subsequent processing and storage quality of crops. Traditional threshing devices often focus on improving threshing efficiency, but if impurities generated during the threshing process, such as straw, broken leaves and other light materials, cannot be effectively removed, it will seriously affect the purity of the threshing product and increase the difficulty and cost of subsequent processing.
[0003] Specifically, when traditional threshing devices separate grains from ears, they also bring a lot of light materials such as straw and broken leaves into the threshed products. These impurities not only increase the volume and weight of the threshed products, but may also cause problems such as mildew and insect pests during subsequent storage, transportation and processing, seriously affecting the quality and value of agricultural products.
[0004] In addition, when traditional threshing devices process threshing products containing a lot of impurities, they often need to rely on manual secondary screening, which is not only labor-intensive and inefficient, but also difficult to ensure the uniformity and thoroughness of screening. Therefore, developing a device that can automatically and efficiently remove impurities from threshing products is of great significance for improving the level of agricultural mechanization and ensuring the quality of agricultural products. Utility Model Content
[0005] The purpose of the utility model is to provide a threshing device capable of removing impurities, so as to solve the problems raised in the above-mentioned background technology. By introducing a negative pressure impurity removal device and utilizing the suction effect of a negative pressure fan, the impurities in the threshing product can be automatically and efficiently removed, thereby improving the purity of the threshing product and the efficiency of subsequent processing.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a threshing device capable of removing impurities, comprising a frame, a threshing box is arranged on the frame, a feeding port is arranged at the bottom of the threshing box, a material receiving platform is arranged on the frame corresponding to the feeding port, a discharge port is arranged at the end of the material receiving platform, the material receiving platform is slidably arranged on the frame, the material receiving platform can swing back and forth laterally, and a reciprocating driving mechanism is connected to the bottom of the material receiving platform; a negative pressure impurity removal device is arranged on the frame at an upper position of the middle part of the conveying surface corresponding to the material receiving platform, the negative pressure impurity removal device comprises a negative pressure fan arranged on one side of the threshing box, and the suction end of the negative pressure fan is arranged directly opposite to the material platform for adsorbing light substances in the threshing product.
[0007] In order to further optimize the utility model, the following technical solutions can be preferably used
[0008] Preferably, the material receiving platform includes a material receiving hopper. A track is arranged on the frame along the swinging direction of the material receiving hopper. Track wheels matching the track are arranged at the bottom. The feeding surface of the material receiving hopper is inclined downward along the conveying direction.
[0009] Preferably, the reciprocating driving mechanism includes a swinging motor arranged on the frame. A cam is connected to the driving end of the swinging motor. A connecting rod is arranged on the protruding part of the cam. A connecting seat is arranged at the bottom of the material 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 material receiving hopper to reciprocate swing; By adopting 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 material 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.
[0010] Preferably, the threshing assembly 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 to a driving source. A plurality of spiral fixed knives matching the threshing teeth are arranged at the top of the threshing box.
[0011] Preferably, the threshing main shaft is coaxially connected to the fan shaft of the negative pressure fan, and the threshing assembly and the negative pressure fan share a driving source.
[0012] Preferably, the material suction end includes a lower material suction part and an upper transition part. The material suction part is square. The material suction port of the transition part decreases from bottom to top. The discharging position of the material suction end corresponds to the central position of the negative pressure fan.
[0013] Preferably, a bending part is arranged between the material suction part and the transition part.
[0014] The threshing device of the present utility model has brought remarkable beneficial effects in the technical field of threshing agricultural machinery equipment, which are specifically reflected in the following aspects:
[0015] 1. Efficient impurity removal: By combining the reciprocating swinging material receiving platform and the negative pressure impurity removal device, the device can automatically and efficiently remove light substances such as straw and broken leaves in the threshing products. The horizontal reciprocating swing of the material receiving platform effectively spreads and disperses the threshing products, increasing the contact area between the light substances and the air, while the negative pressure fan uses strong suction to quickly adsorb and discharge the light substances, thus significantly improving the impurity removal efficiency.
[0016] 2. Improve the purity of threshing products: Through the treatment of this device, impurities in the threshing products are effectively removed, and the purity is significantly improved. This not only facilitates subsequent storage, transportation, and processing, but also effectively reduces problems such as mildew and insect pests caused by impurities, ensuring the quality and value of agricultural products.
[0017] 3. Reduce labor intensity and costs: Traditional methods often rely on manual secondary screening, which is labor-intensive and inefficient. This device realizes automatic impurity removal, greatly reducing the labor intensity of farmers and also reducing the costs generated by manual screening.
[0018] 4. Enhance equipment adaptability: This device is designed flexibly and can be applied to the threshing treatment of various crops. By adjusting the swing amplitude, frequency of the receiving platform, and the suction force of the negative pressure fan, it can meet the threshing requirements of different types and different moisture contents of crops, enhancing the adaptability and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a three-dimensional structural schematic diagram of the threshing device;
[0020] Figure 2 is the front view of the threshing device;
[0021] Figure 3 is the internal structural schematic diagram of the threshing device;
[0022] Figure 4 is the internal three-dimensional structural schematic diagram of the threshing device.
[0023] Figure 5 is the three-dimensional structural schematic of the frame Figure 1 ;
[0024] Figure 6 is the three-dimensional structural schematic of the frame Figure 2 ;
[0025] Figure 7 is the enlarged schematic diagram of the structure at A.
[0026] 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 - receiving platform; 8 - discharge port; 9 - reciprocating drive mechanism; 10 - feeding port; 11 - threshing main shaft; 12 - support wheel; 13 - sieve; 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; 23 - receiving hopper; 24 - material suction part; 25 - bending part; 26 - transition part. DETAILED DESCRIPTION OF THE INVENTION
[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0028] Please refer to Figures 1-7 As shown, a technical solution provided by the present invention: a threshing device capable of removing impurities, 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, a waste discharging port 4 is installed at the tail of the threshing box, a sieve 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 sieve in the threshing box; the crop to be threshed enters the threshing box 2 from the feeding port, after the breaking operation of the threshing assembly, the materials on the sieve are discharged from the waste discharging port at the tail, and the materials under the sieve are discharged through the blanking port below the sieve 13; wherein the threshing assembly includes a threshing main shaft rotatably installed in the threshing box, a plurality of supporting wheels 12 are coaxially installed on the threshing main shaft 11, a threshing frame 14 is axially installed between the supporting wheels, threshing teeth 15 are installed on the outside of the threshing frame, the threshing main shaft is connected with a driving 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 at a position corresponding to the blanking port on the frame, and the negative pressure impurity removal device 5 includes a negative pressure fan 16, the suction end of the negative pressure fan is installed at the position of the blanking port, and is used 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 driving source 6 to ensure uniform gait.
[0029] The material suction end includes a lower material suction part 24 and an upper transition part 26. The material suction part is square-shaped, and the suction opening of the transition part decreases from bottom to top. The discharging position of the material suction end corresponds to the central position of the negative pressure fan. A bending part 25 is designed between the material suction part and the transition part, and the discharging port of the negative pressure fan is designed on the side. The above structural design has the following advantages: 1. Optimize the material suction effect: By designing the material suction end to include a square-shaped material suction part at the lower part and a transition part at the upper part, and the suction opening of the transition part decreases from bottom to top, this design can more effectively concentrate and guide the light substances in the threshing products to move towards the central position of the negative pressure fan. The square-shaped material suction part provides a larger contact area to ensure that most areas on the material receiving platform can be covered, while the decreasing design of the transition part helps to form an air flow acceleration effect, enhancing the adsorption ability of the light substances, thus improving the overall material suction effect. 2. Reduce energy consumption and noise: Since the design of the material suction end makes the air flow more concentrated and efficient, the air volume and pressure required for the negative pressure fan during operation can be correspondingly reduced, thereby reducing energy consumption. At the same time, due to the optimization of the air flow path, the noise generated by air flow disorder is also reduced, improving the environmental protection and use comfort of the equipment. 3. Prolong the service life of the equipment: The design of the material suction end also takes into account the smooth transition of the air flow, avoiding the impact and wear on the internal components of the negative pressure fan caused by sudden changes in the air flow. This helps to prolong the service life of the negative pressure fan and reduce the maintenance cost. 4. Improve operation safety: The setting of the bending part further enhances the structural strength of the material suction end, preventing deformation or damage caused by excessive air flow or foreign object impact. At the same time, it also plays a certain buffering role, reducing the risk of injury to the operator caused by improper operation or unexpected situations, and improving the operation safety of the equipment. In summary, the threshing device in the above preferred solution not only improves the efficiency and quality of impurity removal by optimizing the design of the material suction end, but also reduces energy consumption and noise, prolongs the service life of the equipment, and improves operation safety, providing a more efficient, reliable and safe threshing solution for agricultural production.
[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 horizontally back and forth. A discharge port 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. Both 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 back and forth. 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 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, thus 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 port 8 installed at the end of the receiving platform 7, 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 the 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 23. 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 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.
[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A threshing device capable of removing impurities, comprising a frame, a threshing box is arranged on the frame, a threshing assembly is rotatably installed in the threshing box, and a feeding port is arranged at the bottom of the threshing box, characterized in that: A material receiving platform is provided on the frame at a position corresponding to the material discharge port, a material discharge port is provided at the end of the material receiving platform, the material receiving platform is slidably provided on the frame, the material receiving platform can swing back and forth laterally, and a reciprocating driving mechanism is connected to the bottom of the material receiving platform; a negative pressure impurity removal device is provided on the frame at an upper position in the middle of the conveying surface corresponding to the material receiving platform, the negative pressure impurity removal device comprises a negative pressure fan provided on one side of the threshing box, and the suction end of the negative pressure fan is directly connected to the material platform for adsorbing light substances in the threshing product.
2. A threshing device capable of removing impurities according to claim 1, characterized in that: The material receiving platform comprises a material receiving hopper, a track is arranged on the frame along the swing direction of the material receiving hopper, a track wheel matched with the track is arranged at the bottom, and a feeding surface of the material receiving hopper is arranged to be inclined downward along the conveying direction.
3. A threshing device capable of removing impurities according to claim 2, characterized in that: The reciprocating drive mechanism includes a swing motor arranged on a frame, a driving end of the swing motor is connected to a cam, a protruding portion of the cam is provided with a connecting rod, a connecting seat is provided at the bottom of the material receiving hopper, a connecting swing arm is provided between the connecting seat and the connecting rod, and two ends of the connecting swing arm are respectively hinged to the connecting rod and the connecting seat, and the swing motor drives the cam to rotate, thereby driving the material receiving hopper to swing reciprocatingly.
4. A threshing device capable of removing impurities according to claim 1, characterized in that: The threshing assembly includes a threshing main shaft rotatably arranged in a threshing box, a plurality of supporting wheels are coaxially arranged on the threshing main shaft, a threshing frame is axially arranged between the supporting wheels, threshing teeth are arranged on the outer side of the threshing frame, the threshing main shaft is connected to a driving source, and a plurality of spiral fixed knives cooperating with the threshing teeth are arranged on the top of the threshing box.
5. A threshing device capable of removing impurities according to claim 4, characterized in that: The threshing main shaft of the threshing box is coaxially connected with the fan shaft of the negative pressure fan, and the threshing component and the negative pressure fan share a driving source.
6. A threshing device capable of removing impurities according to claim 1, characterized in that: The suction end includes a lower suction part and an upper transition part, the suction part is square, the suction opening of the transition part decreases from bottom to top, and the discharge position of the suction end corresponds to the center position of the negative pressure fan.
7. A threshing device capable of removing impurities according to claim 6, characterized in that: A bending portion is arranged between the material suction portion and the transition portion.