Winnowing device of small harvester

Abstract

The utility model relates to a winnowing device for a small harvester, which can perform preliminary winnowing when grains are harvested or collected, and avoids fan abrasion and prolongs the service life of equipment through positive pressure blowing. Comprising a mounting rack, a force unloading bin, a vibration plate and a grain outlet are sequentially arranged on the mounting rack from top to bottom, a grain inlet is formed in the top of the force unloading bin, the inner wall of the force unloading bin inclines downwards, the first end of the vibration plate is arranged at an outlet of the force unloading bin, and the second end of the vibration plate inclines downwards; an air outlet duct and an impurity discharging opening are oppositely formed in the two sides of the second end of the vibrating plate, and the grain discharging opening is located below the second end of the vibrating plate.

Description

Technical Field

[0001] The utility model relates to the technical field of grain screening, in particular to a small-sized harvester air separation device. Background Art

[0002] Grain removal is essential during harvesting, drying, and storage. This process reduces the workload of subsequent grain cleaning and improves grain processing efficiency. A common method for removing impurities is air separation. This process utilizes the difference in suspension speed between grain and impurities, using wind power to remove impurities. The air separation process primarily removes light impurities and dust, but can also remove some stones or gravel to a certain extent.

[0003] Conventional air separation equipment on the market uses negative pressure to suck out impurities. The advantage of this method is that it can collect impurities in a targeted manner. The disadvantage is that the impurity removal effect is not obvious enough, and the air volume of negative pressure air separation is difficult to adjust. At the same time, the debris is discharged through the fan, which will cause wear on the fan and even the risk of blockage. Based on this, there is a need for an air separation device that can perform preliminary air separation on grain, reduce the amount of impurities, and facilitate subsequent deep impurity removal. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] In view of the deficiencies in the prior art, the utility model proposes a small-scale air separation device for a harvester, which can perform preliminary air separation when harvesting or collecting grain, and avoids fan wear and extends the service life of the equipment by blowing air under positive pressure.

[0006] 2. Specific technical solutions

[0007] A small harvester air separation device includes a mounting frame, which is provided with an unloading bin, a vibration plate and a grain outlet in sequence from top to bottom. The top of the unloading bin is provided with a grain inlet, the inner wall of the unloading bin is inclined downward, the first end of the vibration plate is provided at the outlet of the unloading bin, the second end of the vibration plate is inclined downward, and air outlets and debris discharge ports are relatively provided on both sides of the second end of the vibration plate, and the grain outlet is located below the second end of the vibration plate.

[0008] Implementation principle and working principle:

[0009] The principle of this scheme is to match the grain inlet with the grain outlet of the small harvester. When harvesting or collecting, the grain enters the unloading bin from the grain inlet. The setting of the unloading bin can slow down the impact and flow rate of the grain entering the unloading bin. During harvesting, the device itself, such as the engine and other components, will vibrate, and the vibration plate device itself will vibrate together under the drive of the vibration to loosen the grain flowing out of the unloading bin. When the grain flows down from the vibration plate, the wind from the air outlet blows the impurities in the grain to the impurity discharge port for discharge, and the impurities in the grain flow out from the grain outlet to achieve air separation and impurity removal.

[0010] As a preferred embodiment, the inner side of the unloading bin is a platform-type structure, the cross-section of the upper part of the unloading bin is larger than the cross-section of the lower part, and the inner side of the unloading bin is a platform-type structure, then the inner side is an inclined surface, which can delay the flow of grain on the unloading bin and reduce the impact, thereby achieving unloading.

[0011] As a preferred embodiment, the first end of the vibration plate is rotatably connected to the outlet of the unloading bin, a telescopic rod is provided at the bottom of the vibration plate, the other end of the telescopic rod is hinged on the mounting frame, and a spring is provided on the outer side of the telescopic rod; the beneficial effect of this preferred embodiment is that when the grain falls onto the vibration plate, the telescopic rod behind the vibration plate will retract, and then recover under the action of the spring, and then the grain itself can be loosened by utilizing the spring's own weight and falling force, and the structure is simple and the energy consumption is low.

[0012] As a preferred embodiment, the outlet of the air outlet is an adjustable metal tube, the position of the outlet end of the air outlet on the mounting frame is adjustable, and the other end of the air outlet is connected to a fan; the beneficial effect of this preferred embodiment is that when the wind from the fan is at the outlet of the air outlet, since it is an adjustable metal tube, the length and the outlet of the air outlet can be adjusted, which is convenient for better adjustment of the wind force.

[0013] As a preferred embodiment, threaded holes are arranged at intervals on the mounting frame toward the direction of the impurity discharge port, and bolts that cooperate with the threaded holes are provided at the outlet end of the air outlet duct; through the cooperation of the threaded holes and the bolts, the position of the outlet end of the air outlet duct can be simply and conveniently adjusted, which facilitates the adjustment of the wind force and is conducive to better impurity removal.

[0014] As a preferred embodiment, an isolation screen is provided in the air outlet duct, and an adjusting sealing plate is provided at the end of the isolation screen, and the adjusting sealing plate is used to adjust the size of the air outlet of the air outlet. The beneficial effect of this preferred embodiment is that, through the setting of the isolation screen, impurities can be effectively prevented from entering the air outlet duct, thereby affecting the operation of the fan; the setting of the adjusting sealing plate can adjust the wind force by setting the size of the air outlet.

[0015] As a preferred embodiment, a dust collecting bag is provided at the impurity discharge port, and a grain collecting bag is provided at the grain discharge port; the beneficial effect of this preferred embodiment is that the provision of the dust collecting bag can prevent dust and other impurities from polluting the air, and the provision of the grain collecting bag facilitates the collection of grain.

[0016] The beneficial effects of the utility model are:

[0017] 1. In this solution, positive pressure blowing is used to effectively prevent impurities from entering the fan and causing wear and tear, effectively extending the service life of the equipment. The unloading bin can effectively slow down the flow rate of grain in the equipment, and the vibration plate can effectively loosen the grain, achieving better air separation and impurity removal effects.

[0018] 2. The vibration plate of this solution vibrates in two ways. One is that the vibration of the device itself drives the vibration plate to operate during operation, thereby loosening the grain. The other is that the grain can be loosened only by the weight of the grain and the impact of falling, combined with the expansion and contraction of the spring. No dedicated vibration motor is required, the structure is simple, the energy consumption is lower, and it is more environmentally friendly.

[0019] 3. The outlet end of the air duct in this solution adopts an adjustable metal tube. When removing dust, the wind force of the fan and the position of the outlet end of the air duct can be adjusted to achieve better wind force adjustment effect and facilitate dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Description of reference numerals:

[0022] Install the frame 1, threaded hole 101, unloading bin 2, vibration plate 3, first end 301, second end 302, grain outlet 4, grain collecting bag 401, grain inlet 5, air outlet 6, fan 601, bolt 602, isolation screen 603, debris discharge port 7, telescopic rod 8, spring 9. DETAILED DESCRIPTION

[0023] The following detailed description of the preferred embodiments of the present invention is provided in conjunction with the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art, thereby more clearly defining the scope of protection of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0024] like Figure 1 As shown:

[0025] A small harvester winnowing device includes a mounting frame 1, wherein the mounting frame 1 is provided with a force unloading bin 2, a vibration plate 3, and a grain outlet 4 in sequence from top to bottom; wherein a grain inlet 5 is integrally formed or welded on the top of the force unloading bin 2, wherein the grain inlet 5 corresponds to the grain outlet position of the harvester; the inner wall of the force unloading bin 2 is tilted downward, forming a platform-shaped structure, specifically a prism with 3-5 side edges; the cross-section above the force unloading bin 2 is larger than the cross-section below; the specific horizontal inclination angle of the inner wall of the force unloading bin 2 is 30°-45°, which can effectively slow down the flow rate of grain and achieve force unloading;

[0026] Among them, the first end 301 of the vibration plate 3 is arranged at the outlet of the unloading bin 2, which can be specifically welded or rotatably connected. In this scheme, it is a rotatably connected; the second end 302 of the vibration plate 3 is tilted downward, and the specific tilt angle of the vibration plate is initially 45°-60°, which can slow down the speed of grain falling; the bottom of the vibration plate 3 is connected with a telescopic rod 8, wherein the outer side of the telescopic rod 8 is sleeved with a spring 9, and the two ends of the spring 9 are respectively fixedly connected to the two sections of the telescopic rod 8, and the telescopic rod 8 is reset and extended by the spring 9. The other end of the telescopic rod 8 is hinged on the mounting frame 1. Through the setting of the spring 9, the telescopic rod 8, and the tilt angle of the vibration plate 3, it is possible to better receive the impact and convert it into the expansion and contraction of the spring, thereby achieving the loosening of grain, utilizing the falling force and dead weight of the grain, and then through the cooperation of the spring 9 and the telescopic rod 8, no vibration motor is required, the structure is simple, and it is more environmentally friendly;

[0027] An air outlet 6 and a debris removal port 7 are relatively arranged on both sides below the second end of the vibration plate 3, wherein a fan 601 is arranged at the air inlet of the air outlet 6, and the air outlet of the air outlet 6 is an adjustable metal pipe port, and the adjustable metal pipe can be specifically a bellows, and the adjustable metal pipe can be telescopically changed in length, thereby realizing the adjustment of the distance between the air outlet 6 and the falling position of the grain, and then realizing the adjustment of the fan 601 and the air outlet 6 to realize wind force adjustment and improve the debris removal effect; in order to avoid impurities from entering the air outlet 6 and affecting the grain, The blower 601 is running, and an isolation screen 607 is installed at the air outlet of the air outlet 6. In order to better adjust the wind force, an adjustment sealing plate is also provided at the end of the isolation screen. By adjusting the sealing plate, the size of the air outlet can be changed to achieve wind force adjustment; the debris discharge port 7 is welded on the frame, and a dust collecting bag is also provided on it, which can collect debris well and prevent air pollution. The outlet of the grain outlet 4 is also provided with a grain collecting bag 401, which is convenient for collecting the processed grain and saves more effort.

[0028] Although 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 shall be defined by the appended claims.

Claims

1. A small harvester air separation device, characterized by: The invention comprises a mounting frame (1), wherein the mounting frame (1) is provided with a force unloading bin (2), a vibration plate (3) and a grain outlet (4) in sequence from top to bottom, a grain inlet (5) is provided at the top of the force unloading bin (2), an inner wall of the force unloading bin (2) is inclined downward, a first end (301) of the vibration plate (3) is provided at the outlet of the force unloading bin (2), a second end (302) of the vibration plate (3) is inclined downward, an air outlet (6) and a debris discharge port (7) are provided on both sides below the second end of the vibration plate (3), and the grain outlet (4) is located below the second end (302) of the vibration plate (3).

2. The small harvester air separation device according to claim 1, characterized in that: The inner side of the unloading bin (2) is a platform-shaped structure, and the cross-section of the upper portion of the unloading bin (2) is larger than the cross-section of the lower portion.

3. The small harvester air separation device according to claim 1, characterized in that: The first end (301) of the vibration plate (3) is rotatably connected to the outlet of the unloading bin (2); a telescopic rod (8) is provided at the bottom of the vibration plate (3); the other end of the telescopic rod (8) is hinged on the mounting frame (1); and a spring (9) is sleeved on the outer side of the telescopic rod (8).

4. The small harvester air separation device according to claim 1, characterized in that: The outlet of the air outlet duct (6) is an adjustable metal tube, the position of the outlet end of the air outlet duct (6) on the mounting frame (1) is adjustable, and the other end of the air outlet duct (6) is connected to a fan (601).

5. The small harvester air separation device according to claim 4, characterized in that: The mounting frame (1) is provided with threaded holes (101) spaced apart in the direction of the impurity discharge port (7), and the outlet end of the air outlet duct (6) is provided with bolts (602) that match the threaded holes (101).

6. The small harvester air separation device according to claim 5, characterized in that: An isolation screen (603) is provided in the air outlet duct (6), and an adjustment sealing plate is provided at the end of the isolation screen, and the adjustment sealing plate is used to adjust the size of the air outlet of the air outlet duct (6).

7. The small-sized harvester winnowing device according to claim 1, characterized in that: The impurity discharge port (7) is provided with a dust collecting bag, and the grain discharge port (4) is provided with a grain collecting bag (401).

Images