Harvester tail dust purifier

Abstract

The utility model belongs to the technical field of harvester, concretely provides a harvester tail dust purification device, including filter box, filter unit and vibration blanking unit, filter box inside has from top to bottom filter channel, air inlet is located in the upper portion, blow-off port is located in the lower portion, air outlet is located in the side portion, filter unit sets up in the position of air outlet, is used for carrying out the filtration to straw, dust etc. in the air. Filter unit has the filter surface that sets up along the vertical direction, is not easy to accumulate straw or dust. During the period of harvester work, through vibration blanking unit to filter unit exert the vibration force in the up-down direction, make the impurity that adheres on filter surface promptly fall off, avoid filter unit to be jammed because of dust accumulation, thereby reduce the frequency of cleaning during shutdown, improve the continuity and efficiency of harvesting operation. The utility model will blow-off port set up in the bottom of filter box, can open the switch mechanism after working for a period of time, and the impurity is concentrated and discharged through blow-off port, and the collection and discharge of impurity are convenient.

Description

Technical Field

[0001] This application belongs to the field of harvester technology, specifically a harvester exhaust dust purification device. Background Technology

[0002] In modern mechanized agricultural production, combine harvesters have become an indispensable core piece of equipment in the harvesting of major crops such as wheat and corn. However, while enjoying the convenience brought by high-efficiency harvesting, the environmental pollution problems generated during their operation are becoming increasingly prominent. Specifically, when the harvester cuts, threshes, and cleans grains in the field, it generates a large amount of complex gas-solid mixture containing fine soil particles, crop fibers, chaff, and broken straw. Under the powerful airflow generated by the blower, these substances are directly and at high speed scattered into the field through the exhaust port designed at the rear of the harvester. This process instantly generates a large-scale dust storm, forming a dust belt that follows closely behind the harvester. This unorganized dust emission not only affects the quality of life of surrounding residents and road traffic safety, but also poses a direct threat to the respiratory health of field workers.

[0003] To address the issue of dust emission from the exhaust tail of harvesters, existing technologies have developed several filtration devices capable of suppressing this dust. These devices utilize filter screens, filter cloths, or metal meshes installed in the exhaust channels to trap particulate matter through the mechanical barrier effect of fibers or pores. However, due to the significant amount of dust generated during harvester operation, these filtration devices are prone to clogging in practice. Clogging obstructs exhaust from the harvester's tail, forcing operators to frequently stop the machine for manual cleaning, thus impacting harvesting efficiency. Utility Model Content

[0004] Based on the above-mentioned technical problems, this application provides a harvester exhaust dust purification device to solve the problem that the existing filter device needs to be shut down for cleaning after clogging.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a harvester exhaust dust purification device, comprising: A filter box has a filter channel arranged from top to bottom. The filter box has an air inlet at the top and a drain outlet at the bottom. The filter box has an air outlet on the side. The air inlet, the drain outlet and the air outlet are respectively connected to the filter channel. A switch mechanism is provided at the drain outlet. A filter unit is disposed on the side of the filter box where the air outlet is located. The filter unit has a vertically arranged filter surface that covers the air outlet. A vibrating feeding unit is connected to the side of the filter unit away from the filter channel and is used to apply vertical vibration force to the filter unit.

[0006] In one possible implementation, the filter box has a square horizontal cross-section, and the air outlets are provided on all four sides of the filter box; each air outlet is provided with a corresponding filter unit, and the vibrating material feeding unit is connected to the filter unit in a one-to-one correspondence.

[0007] In one possible implementation, the filter box is provided with a connecting beam on the side near the harvester, and the air inlet is provided with an air inlet elbow that connects to the harvester's exhaust port.

[0008] In one possible implementation, the switching mechanism includes: A collecting funnel has a collecting chamber, the cross-sectional area of ​​which gradually decreases from top to bottom. The top of the collecting chamber is connected to the drain outlet, and the bottom of the collecting chamber has a discharge outlet. A valve plate, hinged to the bottom of the material collection chamber, is used to control the opening or closing of the discharge port.

[0009] In one possible implementation, the filter surface of the filter unit extends in a zigzag pattern along the edge of the filter box.

[0010] In one possible implementation, the filtering unit includes: Two fixed plates are set parallel to each other, one above the other. Multiple support rods are arranged in a zigzag pattern along the edge of the filter box; and The filter cloth is sequentially wound around the multiple support rods to form a tortuous filter surface.

[0011] In one possible implementation, the support rod has a plurality of first mounting holes along its length, and the filter unit further includes: Multiple pressure plates are respectively disposed on corresponding support rods. Each pressure plate is located on the side of the filter cloth facing away from the support rod, and each pressure plate has a second mounting hole coaxial with the first mounting hole. Multiple fixing screws are provided, which pass through the corresponding second mounting holes and are threaded into the corresponding first mounting holes.

[0012] In one possible implementation, the support rod is a rod with a circular cross-section.

[0013] In one possible implementation, the filtering unit includes a plurality of filter elements spaced apart from top to bottom, adjacent filter elements are fixedly connected, and the plurality of filter elements are connected to the same vibrating feeding unit.

[0014] In one possible implementation, the vibrating material feeding unit is located at the center of the filtering unit.

[0015] Compared with the prior art, the beneficial effects of the harvester exhaust dust purification device provided in this application are: The harvester exhaust dust purification device provided in this application includes a filter box, a filter unit, and a vibrating discharge unit. The filter box adopts a top-down filtration channel design, with the air inlet located at the top, the sewage outlet at the bottom, and the air outlet on the side. The filter unit is located at the air outlet and is used to filter straw, dust, and other particles in the air. The filter unit has a vertically arranged filter surface, which makes it difficult for straw or dust to accumulate. During harvester operation, the vibrating discharge unit can apply vertical vibration force to the filter unit, causing impurities attached to the filter surface to fall off in time, preventing the filter unit from being clogged due to dust accumulation, thereby reducing the frequency of downtime for cleaning and improving the continuity and efficiency of harvesting operations.

[0016] This application places the drain outlet at the bottom of the filter box. After working for a period of time, the switch mechanism can be opened to discharge impurities through the drain outlet, which facilitates the collection and timed discharge of impurities. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 Schematic diagram of the structure of the harvester exhaust dust purification device provided in the embodiments of this application Figure 1 ; Figure 2 Schematic diagram of the structure of the harvester exhaust dust purification device provided in the embodiments of this application Figure 2 ; Figure 3 This is an exploded view of the assembly of the harvester exhaust dust purification device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the filter monomer in the embodiments of this application; Figure 5 This is an exploded view of the filter unit assembly in an embodiment of this application; Explanation of reference numerals in the attached figures: 10. Filter box; 11. Switching mechanism; 111. Collection hopper; 112. Valve plate; 12. Connecting beam; 13. Air inlet elbow; 20. Filter unit; 21. Fixing plate; 22. Support rod; 23. Filter cloth; 24. Pressure plate; 30. Vibrating discharge unit. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] Please refer to the following: Figures 1 to 5 The structure and working principle of a harvester exhaust dust purification device provided in the embodiments of this application will be described below.

[0025] Please see Figures 1 to 5 This application provides a harvester exhaust dust purification device, including a filter box 10, a filter unit 20, and a vibrating material discharge unit 30.

[0026] The filter box 10 is fixedly installed at the tail of the harvester. The overall shape of the filter box 10 can be a cuboid, cylinder, or other polygonal shape. The interior of the filter box 10 is hollow, forming a filter channel arranged from top to bottom. An air inlet is opened at the top of the filter box 10, which is used to connect with the exhaust port at the tail of the harvester. The gas containing straw fragments and dust discharged from the tail of the harvester is guided into the filter channel of the filter box 10 through a gas pipe.

[0027] The filter box 10 can be made of metal plates such as stainless steel plates and aluminum alloy plates. Of course, other non-metallic materials can also be used without affecting the structural strength.

[0028] The filter box 10 has a drain port at the bottom and an air outlet on the side. The air inlet, drain port, and air outlet are all connected to the filter channel. After air enters the filter channel, large particles such as straw, stones, and soil particles are deposited at the bottom of the filter box 10 under gravity, while small particles are trapped on the filter surface by the filter unit 20. The filtered air then enters the outside atmosphere through the filter holes of the filter unit 20.

[0029] A drain port is provided at the bottom of the filter box 10, and a switch mechanism 11 is provided at the drain port. The drain port is controlled to open or close by the switch mechanism 11. During normal operation of the harvester, the switch mechanism 11 is in the closed state. When a large amount of impurities accumulate inside the filter box 10, the switch mechanism 11 can be opened to discharge the impurities.

[0030] The filter unit 20 is located on the side of the filter box 10 where the air outlet is located. The filter unit 20 has a filter surface arranged vertically, which covers the air outlet. The vibrating feeding unit 30 is connected to the side of the filter unit 20 away from the filter channel and is used to apply vertical vibration force to the filter unit 20.

[0031] The filter unit 20 has a vertical filter surface, allowing impurities to easily slide off and prevent accumulation. The vibrating discharge unit 30 applies vertical vibration to the filter unit 20 during operation, further aiding in cleaning impurities from the filter surface. The filter unit 20 can be any existing filter surface, fabric, stainless steel filter plate, etc. The vibrating discharge unit 30 is a vibrating motor; there are no restrictions on the specific specifications or model of the motor, and users can choose according to their needs. When the area of ​​the filter unit 20 is large, the vibrating discharge unit 30 can be positioned at the center of the filter unit 20.

[0032] The filter unit 20 can be fixed to the side wall of the filter box 10 in a detachable manner, such as by bolt connection, snap connection, or limit pin fixing. When the filter unit 20 is damaged, it can be removed and replaced.

[0033] Please see Figures 1 to 3 The filter box 10 has a square horizontal cross-section. In order to increase the air volume, air outlets are provided on all four sides of the filter box 10. Each air outlet is provided with a corresponding filter unit 20. Four vibrating material feeding units 30 are provided, and the four vibrating material feeding units 30 are connected to the four filter units 20 one by one.

[0034] Please see Figures 1 to 3In order to connect and fix the filter box 10 to the tail of the harvester, a connecting beam 12 is provided on the side of the filter box 10 near the harvester. The connecting beam 12 is fixed to the tail of the harvester body by welding, bolts or other means.

[0035] Considering that the exhaust ports of most harvesters are horizontal, the air inlet is equipped with an air inlet elbow 13 that is connected to the exhaust port of the harvester. The angle of the air inlet elbow 13 is usually 90 degrees, which can guide the airflow from the exhaust port into the filter box 10.

[0036] Please see Figures 1 to 3 The switching mechanism 11 includes a collecting funnel 111 and a valve plate 112. The collecting funnel 111 has a collecting chamber, the cross-sectional area of ​​which gradually decreases from top to bottom, allowing impurities to accumulate at the bottom. The top of the collecting chamber is connected to a drain outlet, and the bottom of the collecting chamber has a discharge outlet. The valve plate 112 is hinged to the bottom of the collecting chamber and is used to control the opening or closing of the discharge outlet. The valve plate 112 can be opened or closed manually, or automatically using common driving devices such as existing motors, hydraulic rods, and pneumatic telescopic rods. Structures using hydraulic rods or pneumatic telescopic rods to drive the valve plate 112 are existing technologies and will not be described further here.

[0037] Please see Figures 1 to 4 The filter surface of the filter unit 20 extends in a zigzag pattern along the edge of the filter box 10, which can increase the filtration area. When the filter box 10 is square, the filter unit 20 extends along the side length. When the filter box 10 is cylindrical, the filter unit 20 extends in an arc shape.

[0038] Please see Figure 5 The filter unit 20 includes a fixing plate 21, support rods 22, and filter cloth 23. Two fixing plates 21 are arranged parallel to each other vertically; the support rods 22 extend vertically, and multiple support rods 22 are distributed in a zigzag pattern along the side length of the filter box 10; the filter cloth 23 is sequentially wound around the multiple support rods 22 to form a zigzag filter surface. The filter cloth 23 is a flexible fiber fabric, allowing air to pass through. The filter cloth 23 can be removed and replaced if damaged.

[0039] Please see Figure 5 To secure the filter cloth 23, the support rod 22 has multiple first mounting holes along its length. The filter unit 20 also includes pressure plates 24 and fixing screws. Multiple pressure plates 24 are respectively positioned on the corresponding support rod 22, on the side of the filter cloth 23 facing away from the support rod 22. Each pressure plate 24 has a second mounting hole coaxial with the first mounting holes. Multiple fixing screws pass through the corresponding second mounting holes and are threaded into the corresponding first mounting holes. After tightening the fixing screws, the pressure plates 24 press the filter cloth 23 onto the support rod 22, ensuring that the filter cloth 23 will not move due to airflow or other factors during normal operation.

[0040] The support rod 22 is a stainless steel metal rod with a circular cross-section, and the pressure plate 24 is an arc-shaped plate that matches the shape of the support rod 22.

[0041] Please see Figures 1 to 3 When the height of the filter box 10 is relatively high, the filter unit 20 includes multiple filter units spaced apart from top to bottom. Adjacent filter units are fixedly connected as a whole by welding or bolting. Multiple filter units are connected to the same vibrating feeding unit 30.

[0042] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A harvester exhaust dust purification device, characterized in that, include: The filter box (10) has a filter channel arranged from top to bottom. The filter box (10) has an air inlet at the top and a drain outlet at the bottom. The filter box (10) has an air outlet on the side. The air inlet, the drain outlet and the air outlet are respectively connected to the filter channel. A switch mechanism (11) is provided at the drain outlet. A filter unit (20) is disposed on the side of the filter box (10) where the air outlet is located. The filter unit (20) has a vertically arranged filter surface that covers the air outlet. The vibrating material feeding unit (30) is connected to the side of the filter unit (20) away from the filter channel and is used to apply vertical vibration force to the filter unit (20).

2. The harvester exhaust dust purification device according to claim 1, characterized in that, The filter box (10) has a square horizontal cross-section, and the filter box (10) has air outlets on all four sides; each air outlet is provided with a corresponding filter unit (20), and the vibrating material dropping unit (30) is connected to the filter unit (20) one by one.

3. The harvester exhaust dust purification device according to claim 1, characterized in that, The filter box (10) is provided with a connecting beam (12) on the side near the harvester, and the air inlet is provided with an air inlet elbow (13) connected to the harvester's exhaust port.

4. The harvester exhaust dust purification device according to claim 1, characterized in that, The switching mechanism (11) includes: A material collection funnel (111) has a material collection chamber, the cross-sectional area of ​​which gradually decreases from top to bottom. The top of the material collection chamber is connected to the sewage outlet, and the bottom of the material collection chamber has a discharge outlet. A valve plate (112) is hinged to the bottom of the material collection chamber and is used to control the opening or closing of the discharge port.

5. The harvester exhaust dust purification device according to claim 1, characterized in that, The filter surface of the filter unit (20) extends in a zigzag pattern along the outer edge of the filter box (10).

6. The harvester exhaust dust purification device according to claim 1, characterized in that, The filter unit (20) includes: Two fixing plates (21) are set parallel to each other vertically; Multiple support rods (22) are distributed in a zigzag pattern along the edge of the filter box (10); and The filter cloth (23) is sequentially wound around the multiple support rods (22) to form a tortuous filter surface.

7. The harvester exhaust dust purification device according to claim 6, characterized in that, The support rod (22) has multiple first mounting holes along its length, and the filter unit (20) further includes: Multiple pressure plates (24) are respectively disposed on the corresponding support rods (22). The pressure plates (24) are disposed on the side of the filter cloth (23) away from the support rods (22). The pressure plates (24) have second mounting holes coaxial with the first mounting holes. Multiple fixing screws are provided, which pass through the corresponding second mounting holes and are threadedly engaged with the corresponding first mounting holes.

8. The harvester exhaust dust purification device according to claim 6, characterized in that, The support rod (22) is a rod with a circular cross-section.

9. The harvester exhaust dust purification device according to claim 1, characterized in that, The filter unit (20) includes multiple filter elements spaced apart from top to bottom, adjacent filter elements are fixedly connected, and multiple filter elements are connected to the same vibrating feeding unit (30).

10. The harvester exhaust dust purification device according to claim 1, characterized in that, The vibrating material feeding unit (30) is located at the center of the filter unit (20).

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