Grain impurity screening device

Abstract

The utility model provides a grain impurity screening device which comprises a placing frame, a blanking roller and a screening assembly, and the surface of the placing frame is fixedly connected with a connecting clamping shaft; the screening assembly comprises an inclined screening plate; the surfaces of the two sides of the inclined screening plate are fixedly connected with the surface of the containing frame through connecting clamping shafts. A connecting bottom frame is fixedly connected to the surface of the placing frame and located at the bottom of the inclined sieve plate; the surface of the connecting bottom frame is fixedly connected with a telescopic air rod; one end of the telescopic air rod is fixedly connected with an elastic vibration ball; an upper limiting frame and a lower limiting frame are fixedly connected to the surface of the placement frame and located at the top of the inclined sieve plate; by arranging the material screening assembly, the distance between a limiting clamping plate and an inclined screen plate is adjusted, so that the grains can be transmitted in the distance, the grains can be prevented from being vibrated out, the adaptability of material screening is further improved, impurities in the grains can be fully screened out during material screening, and the material screening effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain impurity screening, in particular to a grain impurity screening device. Background Art

[0002] During the harvesting, transportation and storage process, grains are often mixed with various impurities, such as organic impurities and inorganic impurities. If these impurities are not removed, they will affect the quality of the grain, such as causing the grain pile to heat up and mold, affecting the grain fumigation process, and may also affect the health of consumers. Therefore, screening can remove these impurities and improve the purity and quality of the grain.

[0003] A Chinese patent with the publication number CN212418683U discloses an impurity discharging device for grain screening, including a bottom plate and a discharging hopper, a transporting dragon is fixedly installed on the top of the bottom plate through a symmetrically distributed first support rod, a servo motor is fixedly installed on the top of the bottom plate and on one side of the transporting dragon, and a first gear plate is fixedly connected to the surface of the servo motor. The utility model transports materials by directly conveying the screened impurities to the inside of the transporting auger, and the other end can be directly connected to the containing device, and large pieces of materials will be directly collected through the transporting auger and the discharging hopper, while small particles of dust can be precipitated and collected inside the feed bin without causing dust to fly; the discharging hopper is set to be conical, and the transporting dragon is changed from the original double-bearing connection to the current single-bearing connection, which can avoid the material from being blocked inside the discharging hopper and the feeding shell, making material transportation more convenient.

[0004] As mentioned above, the patent provides an impurity discharging device for grain screening, which can collect sedimentation inside the feed bin without causing dust to fly, and at the same time can prevent materials from being blocked inside the discharge hopper and the feeding shell, making material transportation more convenient. However, when screening, due to the uneven distribution of impurities inside the grain, grain will inevitably accumulate during screening, and the impurities accumulated inside the grain are difficult to be screened out, resulting in the screening effect needs to be improved. Utility Model Content

[0005] The utility model provides a grain impurity screening device to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the utility model provides a grain impurity screening device, comprising a placing rack, a dropping roller and a screening assembly, the surface of the placing rack is fixedly connected with a connecting shaft; the screening assembly comprises an inclined screen plate; the surfaces on both sides of the inclined screen plate are fixedly connected to the surface of the placing rack through connecting shafts; the surface of the placing rack and the bottom of the inclined screen plate are fixedly connected with a connecting base frame; the surface of the connecting base frame is fixedly connected with a telescopic gas rod; one end of the telescopic gas rod is fixedly connected with an elastic vibration ball; the surface of the placing rack and the top of the inclined screen plate are fixedly connected with an upper limit frame and a lower limit frame; the surface of the lower limit frame is threadedly connected with an adjusting screw; the bottom end of the adjusting screw is rotatably connected to a limiting card plate; the top of the limiting card plate is fixedly connected with a sliding card rod; one end of the sliding card rod passes through the upper limit frame and extends to the top of the upper limit frame; the surface of the sliding card rod at one end of the top of the upper limit frame is sleeved with a limiting spring.

[0007] Preferably: the top end of the adjusting screw is fixedly connected with an adjusting spline; one end of the adjusting screw passes through the lower limit frame and extends to the bottom of the lower limit frame; one end of the adjusting screw located on the lower limit frame is rotatably connected to the surface of the limit clamping plate.

[0008] Preferably: the number of the placement racks is set to two, and the two placement racks are symmetrically arranged on both sides of the inclined screen plate; both ends of the blanking roller are fixedly connected to the surfaces of the two placement racks; the number of the blanking rollers is set to multiple, and the multiple blanking rollers are evenly and equidistantly arranged at the bottom of the placement racks.

[0009] Preferably: a material discharge hopper is fixedly connected to the top of the placement rack; an inclined discharge port is provided on one side of the bottom of the material discharge hopper; a protective baffle is fixedly connected to one side of the top of the material discharge hopper.

[0010] Preferably: one side of the unloading hopper is connected to a mounting cartridge; the surface of the mounting cartridge is fixedly connected to the surface of one side of the unloading hopper; the interior of the mounting cartridge is fixedly connected to an electric telescopic rod; one end of the electric telescopic rod is fixedly connected to a push plate.

[0011] The beneficial effects of adopting the above technical solution are:

[0012] By setting up a screening component, the inclined screen plate is used to screen the grain during operation. In this process, the telescopic gas rod drives the vibrating elastic ball to move back and forth continuously, thereby beating and vibrating the inclined screen plate, which can vibrate the accumulated grain, so that the material can be screened more fully and the internal impurities can be screened out. At the same time, in order to control the thickness of the grain and the amount of grain vibrated out of the inclined screen plate, an adjusting screw is threadedly connected to the surface of the lower limit frame. The rotation of the adjusting screw drives the limit card plate to move downward, thereby adjusting the distance between the limit card plate and the inclined screen plate, so that the grain can be transmitted within this distance, which can prevent the grain from being vibrated out, further improving the adaptability of the screening material, and being able to fully screen out the impurities in the grain as a whole, thereby improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the utility model from top view.

[0015] Figure 3 It is a rear view structural schematic diagram of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] Among them: 1. Placement rack; 2. Dropping roller; 3. Connecting shaft; 4. Inclined screen plate; 5. Connecting base frame; 6. Telescopic gas rod; 7. Elastic vibration ball; 8. Upper limit rack; 9. Lower limit rack; 10. Adjusting screw; 11. Limiting card plate; 12. Sliding card rod; 13. Limiting spring; 14. Dropping bucket; 15. Inclined discharge port; 16. Protective baffle; 17. Installing cartridge; 18. Electric telescopic rod; 19. Pushing plate. DETAILED DESCRIPTION

[0018] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a movable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 - Figure 4 As shown, in this embodiment, a grain impurity screening device includes a placement rack 1, a drop roller 2 and a screening assembly, wherein the surface of the placement rack 1 is fixedly connected with a connecting shaft 3; the screening assembly includes an inclined screen plate 4; the surfaces on both sides of the inclined screen plate 4 are fixedly connected to the surface of the placement rack 1 through the connecting shaft 3; the surface of the placement rack 1 and the bottom of the inclined screen plate 4 are fixedly connected with a connecting base frame 5; the surface of the connecting base frame 5 is fixedly connected with a telescopic gas rod 6; one end of the telescopic gas rod 6 is fixedly connected with an elastic vibration ball 7; an upper limit frame 8 and a lower limit frame 9 are fixedly connected to the surface of the placement rack 1 and located at the top of the inclined screen plate 4; an adjusting screw 10 is threadedly connected to the surface of the lower limit frame 9; the bottom end of the adjusting screw 10 is rotatably connected to a limit clamping plate 11; a sliding clamping rod 12 is fixedly connected to the top of the limit clamping plate 11; one end of the sliding clamping rod 12 passes through the upper limit frame 8 and extends to the top of the upper limit frame 8; a limit spring 13 is sleeved on the surface of the sliding clamping rod 12 located at one end of the top of the upper limit frame 8.

[0022] Through the above technical scheme, the connecting card shaft 3 is fixed on the placement frame 1, which is used to connect and install the inclined screen plate 4, and the inclined screen plate 4 is used to screen the impurities in the grain. The connecting base frame 5 is fixed on the placement frame 1, which is used to install the telescopic gas rod 6. The top of the telescopic gas rod 6 is fixed with a vibrating elastic ball. The upper limit frame 8 and the lower limit frame 9 are both fixed on the placement frame 1. The adjusting screw 10 is threadedly rotated on the surface of the lower limit frame 9, and the sliding card rod 12 slides on the surface of the upper limit frame 8. The other end is fixed to the limit card plate 11. The sliding card rod 12 limits the limit card plate 11. A limit spring 13 is sleeved on the surface of the sliding card rod 12 to ensure the stability of the sliding card rod 12 when it slides with the limit card plate 11. When working, it is used The inclined screen plate 4 is used to screen the grain. During this process, the telescopic gas rod 6 drives the vibrating elastic ball to move back and forth continuously, thereby beating and vibrating the inclined screen plate 4, which can vibrate the accumulated grain, so that the material can be screened more fully and the internal impurities can be screened out. At the same time, in order to control the thickness of the grain and the grain being vibrated out of the inclined screen plate 4, an adjusting screw 10 is threadedly connected to the surface of the lower limit frame 9. The adjusting screw 10 rotates to drive the limit card plate 11 to move downward, thereby adjusting the distance between the limit card plate 11 and the inclined screen plate 4, so that the grain can be transmitted within this distance, which can prevent the grain from being vibrated out, further improving the adaptability of the screening material, and being able to fully screen out the impurities in the grain as a whole, thereby improving the screening effect.

[0023] like Figure 1 and Figure 4 As shown, the top end of the adjusting screw 10 is fixedly connected with an adjusting spline; one end of the adjusting screw 10 passes through the lower limit frame 9 and extends to the bottom of the lower limit frame 9; one end of the adjusting screw 10 is located on the lower limit frame 9 and is rotatably connected to the surface of the limit clamping plate 11; the number of the placing racks 1 is set to two, and the two placing racks 1 are symmetrically arranged on both sides of the inclined screen plate 4; both ends of the blanking roller 2 are fixedly connected to the surfaces of the two placing racks 1; the number of the blanking rollers 2 is set to multiple, and the multiple blanking rollers 2 are evenly and equidistantly arranged at the bottom of the placing rack 1.

[0024] Through the above technical scheme, the adjusting spline is used to drive the adjusting screw 10 to rotate, and then the limiting clamping plate 11 is driven to move, and two placing racks 1 are set. The inclined screen plate 4 is fixed between the two placing racks 1 by connecting the clamping rods to support the inclined screen plate 4. Finally, a plurality of blanking rollers 2 are fixed at the bottom of the placing rack 1. The plurality of blanking rollers 2 are evenly and equidistantly arranged on the surface of the placing rack 1. The screened impurities can fall between the blanking rollers 2, which is convenient for the subsequent recovery of impurities at the bottom of the placing rack 1.

[0025] like Figure 2 and Figure 4As shown, a material discharge hopper 14 is fixedly connected to the top of the placement rack 1; an inclined discharge port 15 is opened on one side of the bottom of the material discharge hopper 14; a protective baffle 16 is fixedly connected to one side of the top of the material discharge hopper 14; one side of the material discharge hopper 14 is connected to a mounting cylinder 17; the surface of the mounting cylinder 17 is fixedly connected to the surface of one side of the material discharge hopper 14; an electric telescopic rod 18 is fixedly connected to the inside of the mounting cylinder 17; and a push plate 19 is fixedly connected to one end of the electric telescopic rod 18.

[0026] Through the above technical scheme, the unloading hopper 14 is fixed on the top of the placement rack 1, and the grain can be placed in the unloading hopper 14 and then discharged from the inclined discharge port 15. The mounting cylinder 17 is fixed on one side of the unloading hopper 14, and the electric telescopic rod 18 is fixed inside the mounting cylinder 17. When the electric telescopic rod 18 works, it drives the pushing plate 19 to move, and then pushes the grain to the inclined discharge port 15. In this pushing process, the unloading speed can be controlled by the telescopic speed of the electric telescopic rod 18, thereby further improving the adaptability of unloading.

[0027] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; the technology not described in detail in the present invention is implemented with the existing technology.

Claims

1. A grain impurity screening device, comprising a placement frame (1), a material drop roller (2) and a screening assembly, characterized in that: The surface of the placement rack (1) is fixedly connected to a connecting shaft (3); the screening material assembly comprises an inclined screen plate (4); the surfaces on both sides of the inclined screen plate (4) are fixedly connected to the surface of the placement rack (1) via the connecting shaft (3); the surface of the placement rack (1) and the bottom of the inclined screen plate (4) are fixedly connected to a connecting base frame (5); the surface of the connecting base frame (5) is fixedly connected to a telescopic gas rod (6); one end of the telescopic gas rod (6) is fixedly connected to an elastic vibration ball (7); the surface of the placement rack (1) and the bottom of the inclined screen plate (4) are fixedly connected to a connecting base frame (5); ) is fixedly connected to the top of an upper limit frame (8) and a lower limit frame (9); an adjusting screw (10) is threadedly connected to the surface of the lower limit frame (9); the bottom end of the adjusting screw (10) is rotatably connected to a limit clamping plate (11); a sliding clamping rod (12) is fixedly connected to the top of the limit clamping plate (11); one end of the sliding clamping rod (12) passes through the upper limit frame (8) and extends to the top of the upper limit frame (8); a limit spring (13) is sleeved on the surface of the sliding clamping rod (12) located at one end of the top of the upper limit frame (8).

2. A grain impurity screening device according to claim 1, characterized in that: The top end of the adjusting screw (10) is fixedly connected with an adjusting spline; one end of the adjusting screw (10) passes through the lower limit frame (9) and extends to the bottom of the lower limit frame (9); one end of the adjusting screw (10) located on the lower limit frame (9) is rotatably connected to the surface of the limit clamping plate (11).

3. A grain impurity screening device according to claim 1, characterized in that: The number of the placement racks (1) is set to two, and the two placement racks (1) are symmetrically arranged on both sides of the inclined screen plate (4); both ends of the blanking roller (2) are fixedly connected to the surfaces of the two placement racks (1); the number of the blanking rollers (2) is set to multiple, and the multiple blanking rollers (2) are evenly and equidistantly arranged at the bottom of the placement rack (1).

4. A grain impurity screening device according to claim 1, characterized in that: A material discharge hopper (14) is fixedly connected to the top of the placement rack (1); an inclined discharge port (15) is provided on one side of the bottom of the material discharge hopper (14); and a protective baffle (16) is fixedly connected to one side of the top of the material discharge hopper (14).

5. A grain impurity screening device according to claim 4, characterized in that: One side of the material discharge hopper (14) is connected to a mounting cartridge (17); the surface of the mounting cartridge (17) is fixedly connected to the surface of one side of the material discharge hopper (14); the interior of the mounting cartridge (17) is fixedly connected to an electric telescopic rod (18); one end of the electric telescopic rod (18) is fixedly connected to a material pusher plate (19).

Images