Impurity cleaning equipment used before grain warehousing

Abstract

The invention discloses impurity cleaning equipment used before grain warehousing. The impurity cleaning equipment comprises a screening box, a first shifting assembly, a discharging pipe, a screening barrel and a second shifting assembly. A cavity in the screening box is cylindrical, a feeding port is formed in the top of the screening box, a plurality of first screening holes are formed in the middle of the bottom of the screening box, and a plurality of second screening holes are formed in one side of the bottom of the screening box; the first material stirring assembly is arranged in the screening box; the discharging pipe is fixed to the bottom of the screening box and located below the first screening holes. The material screening barrel is fixed to the bottom of the screening box, a barrel opening of the material screening barrel right faces the second material screening hole, a material screening plate is horizontally erected and fixed in the material screening barrel, the side wall, located above the material screening plate, of the material screening barrel communicates with an impurity discharging pipe, and a conveying pipe is arranged on the side wall, located below the material screening plate, of the material screening barrel; the second material stirring assembly is arranged in the material screening barrel. Grain accumulated below the feeding port can be scattered, screening holes are prevented from being blocked, and the problem of screening leakage is avoided through secondary screening.

Description

Technical Field

[0001] The present invention relates to the technical field of grain storage, and specifically to an impurity cleaning device for grain before it is put into the warehouse. Background Art

[0002] Grain storage in the warehouse refers to the systematic management process of transferring the harvested grain to a dedicated warehouse through scientific methods to maintain its quality, reduce losses, and extend the shelf life. This process is a crucial link in the grain supply chain.

[0003] The preparatory work before grain storage in the warehouse is crucial, and the screening and impurity removal process is particularly important. Through the screening device, foreign matters such as straw, sand, and metal debris in the grain can be removed to avoid affecting the quality of grain storage.

[0004] The current screening process is to directly pour the grain into the screening device and use the sieve mesh in the screening device for screening. However, the grain directly poured into the screening device often accumulates under the feeding port, which not only blocks the mesh holes of the sieve mesh and affects the screening effect, but also the problem of missed screening usually easily occurs when only using the sieve mesh, resulting in poor quality of the screened grain. Summary of the Invention

[0005] The purpose of the present invention is to provide an impurity cleaning device for grain before it is put into the warehouse to solve the problems of missed screening and blocked sieve holes existing in the prior art during the impurity removal process of grain before storage in the warehouse.

[0006] The technical solution of the present invention is as follows:

[0007] An impurity cleaning device before grain is stored in a warehouse, comprising a screening box, a first feeding component, a discharge pipe, a screening barrel and a second feeding component; the cavity inside the screening box is cylindrical, the top of the screening box is provided with a feeding port, a plurality of first screening holes are opened in the middle of the bottom of the screening box, a plurality of second screening holes are opened on one side of the bottom of the screening box, and the diameter of the second screening holes is larger than that of the first screening holes; the first feeding component is arranged inside the screening box and is used for horizontally reciprocatingly stirring the grain to be screened input into the screening box; the discharge pipe is vertically fixed at the bottom of the screening box and is located directly below the plurality of first screening holes; the screening barrel is fixed at the bottom of the screening box, and the barrel mouth of the screening barrel is arranged opposite to the plurality of second screening holes. A screening plate is horizontally installed and fixed inside the screening barrel, and the diameter of the screening holes on the screening plate is the same as that of the first screening holes. A waste discharge pipe is communicated with the side wall of the screening barrel above the screening plate, and a conveying pipe is arranged on the side wall of the screening barrel below the screening plate. Both ends of the conveying pipe are communicated with the screening barrel and the discharge pipe respectively; the second feeding component is arranged inside the screening barrel and is used for dialing the impurities above the screening plate into the waste discharge pipe and dialing the grain after secondary screening below the screening plate into the conveying pipe.

[0008] Preferably, as a further improvement of the present invention, the first feeding component includes a first rotation driving part, a first shaft and two groups of spiral blades; the first rotation driving part is connected to one side wall of the screening box and has a reciprocating rotation function; the first shaft is arranged inside the screening box, one end of the first shaft is connected to the output end of the first rotation driving part, and the other end of the first shaft is rotatably connected to the inner wall of the screening box; the two groups of spiral blades are respectively sleeved and fixed on both sides of the first shaft, and the rotation directions of the two groups of spiral blades are opposite.

[0009] Preferably, as a further improvement of the present invention, the second feeding component includes a second rotation driving part, a second rotating shaft and two feeding plates; the second rotation driving part is connected to the bottom of the screening barrel; the second rotating shaft is vertically arranged inside the screening barrel, one end of the second rotating shaft extends outside the screening barrel and is connected to the output end of the second rotation driving part, and the other end of the second rotating shaft extends above the screening plate; the two feeding plates are fixed on the side wall of the second rotating shaft and are respectively located above and below the screening plate.

[0010] Preferably, as a further improvement of the present invention, the end face of the feeding plate facing away from the second rotating shaft is an arc surface, and the arc surface is in sliding contact with the inner wall of the screening barrel.

[0011] Preferably, as a further improvement of the present invention, there are two groups of the screening barrels and the second feeding components, and they are symmetrically arranged on both sides of the discharge pipe.

[0012] Preferably, as a further improvement of the present invention, a fixed shaft is provided at the inner center of the discharge pipe, the upper end of the fixed shaft is fixed to the inner wall of the discharge pipe by a connecting rod, a spiral guide blade is fixedly mounted on the fixed shaft, a plurality of dust suction holes are opened on the circumferential side wall of the discharge pipe, and a dust suction assembly is provided on the outer side of the discharge pipe.

[0013] Preferably, as a further improvement of the present invention, the dust collection assembly includes a cover shell and a dust collection box, the cover shell is fixedly sleeved on the outer wall of the fixed shaft, and the dust collection box is fixed in the cover shell.

[0014] Preferably, as a further improvement of the present invention, a support seat is fixed to the bottom of the discharge pipe, and an inclined discharge slot is provided on the side wall of the support seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The first material shifting assembly can be used to shift the grain to be removed from the screening box horizontally back and forth. Smaller grains are directly screened through multiple first screening holes and fall into the discharge pipe. The first material shifting assembly can not only spread the grain to be removed from the screening box to avoid stacking and clogging the screening holes, but also shift larger impurities to one side and drop them into the screening barrel. The screening plate in the screening barrel is used for secondary screening. The larger impurities are separated above the screening plate, while the smaller grains are separated below the screening plate. The separated impurities are shifted into the discharge pipe for discharge and removal through the second material shifting assembly. The secondary separated grains are shifted into the conveying pipe and conveyed to the discharge pipe. Finally, the grain after impurities are screened is conveyed through the discharge pipe for storage.

[0017] 2. Through multiple screening, the problem of missed screening can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front and cross-sectional structure of an impurity cleaning device for grain before storage according to the present invention.

[0019] Figure 2 The present invention is a schematic structural diagram of a screening barrel in an impurity cleaning device before grain is stored in a warehouse.

[0020] Figure 3 This is a schematic diagram of the main structure of an impurity cleaning device for grain before storage according to the present invention. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 To the attached Figure 3, a detailed description of the specific embodiments of the present invention will be given. In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0023] Embodiment

[0024] As Figures 1 to 3 shown, the embodiment of the present invention provides an impurity cleaning device before grain is put into the warehouse, including a screening box 1, a first feeding component 2, a discharge pipe 3, a screening barrel 4 and a second feeding component 6; the cavity inside the screening box 1 is cylindrical, the top of the screening box 1 is provided with a feeding port, a plurality of first screening holes 11 are opened in the middle of the bottom of the screening box 1, a plurality of second screening holes 12 are opened on one side of the bottom of the screening box 1, and the diameter of the second screening holes 12 is larger than that of the first screening holes 11; the first feeding component 2 is arranged inside the screening box 1, and the first feeding component is used for horizontally reciprocatingly stirring the grain to be screened input into the screening box 1; the discharge pipe 3 is vertically fixed at the bottom of the screening box 1 and is located directly below a plurality of first screening holes 11; the screening barrel 4 is fixed at the bottom of the screening box 1, and the barrel mouth of the screening barrel 4 is arranged opposite to a plurality of second screening holes 12. A screening plate 41 is horizontally installed and fixed inside the screening barrel 4, and the diameter of the screening holes on the screening plate 41 is the same as that of the first screening holes 11. A waste discharge pipe 51 is communicated with the side wall of the screening barrel 4 above the screening plate 41, and a conveying pipe 52 is arranged on the side wall of the screening barrel 4 below the screening plate 41. Both ends of the conveying pipe 52 are communicated with the screening barrel 4 and the discharge pipe 3 respectively; the second feeding component 6 is arranged inside the screening barrel 4, and the second feeding component 6 is used for dialing the impurities located above the screening plate 41 into the waste discharge pipe 51 and dialing the grain after secondary screening located below the screening plate 41 into the conveying pipe 52.

[0025] In this embodiment, the grains to be de - weeded before being stored in the warehouse are put into the screening box 1 through the feeding port. The first material - shifting component is used to horizontally reciprocate and shift the grains falling into the screening box 1, so that they are laid flat to avoid stacking and blocking. During the shifting process, some grains smaller than the impurities are separated through a plurality of first screening holes 11 and fall into the discharge pipe 3, while the larger - sized impurities and the other grains are separated through a plurality of second screening holes 12 into the screening bucket 4 for secondary screening. The larger - sized impurities are separated above the screening plate 41 by the provided screening plate 41, while the smaller - sized grains are separated below it. The second material - shifting component 6 is used to shift the separated impurities into the impurity discharge pipe 51 for discharge and removal, and shift the grains after secondary separation into the conveying pipe 52 and then convey them into the discharge pipe 3. Finally, the grains after screening out the impurities are conveyed through the discharge pipe 3 for storage.

[0026] Specifically, the first material - shifting component 2 includes a first rotation driving part 21, a first shaft 22 and two groups of spiral blades 23. The first rotation driving part 21 is connected to one side wall of the screening box 1. The first rotation driving part 21 is a forward - reverse motor with a reciprocating rotation function. The first shaft 22 is arranged in the screening box 1. One end of the first shaft 22 is connected to the output end of the first rotation driving part 21, and the other end of the first shaft 22 is rotatably connected to the inner wall of the screening box 1. The two groups of spiral blades 23 are respectively sleeved and fixed on both sides of the first shaft 22, and the rotation directions of the two groups of spiral blades 23 are opposite.

[0027] When horizontally reciprocating and shifting through the first material - shifting component 2, by controlling the first rotation driving part 21, the first shaft 22 can be driven to continuously switch between rotating forward several circles and then rotating backward several circles. In this way, the two groups of spiral blades 23 can be driven by the first shaft 22 to rotate forward and backward, realizing the material - shifting process of gathering the grains to be screened falling into the screening box 1 towards the middle or separating them to both sides, so that the grains can be fully screened.

[0028] Specifically, the second material - shifting component 6 includes a second rotation driving part 61, a second rotating shaft 62 and two material - shifting plates 63. The second rotation driving part 61 is connected to the bottom of the screening bucket 4. The second rotation driving part 61 is a motor. The second rotating shaft 62 is vertically arranged in the screening bucket 4. One end of the second rotating shaft 62 extends outside the screening bucket 4 and is connected to the output end of the second rotation driving part 61, and the other end of the second rotating shaft 62 extends above the screening plate 41. The two material - shifting plates 63 are fixed on the side wall of the second rotating shaft 62 and are respectively located above and below the screening plate 41.

[0029] When pushing the impurities and grains after screening by the screening plate 41 through the second feeding component 6, the second rotating drive part 61 is controlled to drive the second rotating shaft 62 and the two feeding plates 63 to rotate. Among them, when the feeding plate 63 located above the screening plate 41 rotates, the impurities are dialed into the impurity discharge pipe 51 by centrifugal force and removed. And when the feeding plate 63 located below the screening plate 41 rotates, the grains after screening by the screening plate 41 are also dialed into the conveying pipe 52 by centrifugal force and conveyed to the discharge pipe 3 through the conveying pipe 52 for separation. Moreover, the rotating feeding plate 63 can continuously dial the impurities to prevent the screening holes of the screening plate 41 from being blocked.

[0030] Furthermore, in order to prevent the feeding plate 63 from being blocked during rotation and improve the feeding effect, the end face of the feeding plate 63 facing away from the second rotating shaft 62 is an arc surface, and the arc surface is in sliding contact with the inner wall of the screening barrel 4.

[0031] In another embodiment of the present invention, in order to improve the screening efficiency, there are two groups of the screening barrel 4 and the second feeding component 6, and they are symmetrically arranged on both sides of the discharge pipe 3.

[0032] In another embodiment of the present invention, in order to adsorb and separate the dust mixed in the grains falling into the discharge pipe 3 after screening the impurities and further improve the grain quality, a fixed shaft 71 is provided at the center inside the discharge pipe 3. The upper end of the fixed shaft 71 is fixed to the inner wall of the discharge pipe 3 through a connecting rod 72. A spiral guide vane 73 is fixedly sleeved on the fixed shaft 71. A plurality of dust suction holes 31 are opened on the circumferential side wall of the discharge pipe 3, and a dust suction component is provided outside the discharge pipe 3.

[0033] In this embodiment, by setting the spiral guide vane 73, the preliminarily screened grains falling into the discharge pipe 3 can spiral down along the spiral guide vane 73 to slow down their falling speed. At the same time, during the sliding process of the preliminarily screened grains, a negative pressure is generated by the dust suction component, and the dust in the discharge pipe 3 is adsorbed and separated through the plurality of dust suction holes 31, so that the grains finally discharged from the lower port of the discharge pipe 3 are cleaner, in order to improve the storage quality.

[0034] Specifically, as Figure 1 shown, the dust suction component includes a housing 81 and a dust suction box 82. The housing 81 is fixedly sleeved on the outer wall of the fixed shaft 71, and the dust suction box 82 is fixed inside the housing 81.

[0035] Furthermore, as Figure 1 shown, in order to facilitate the conveying of the screened grains discharged from the discharge pipe 3, a support seat 9 is fixed at the bottom of the discharge pipe 3, and an inclined discharge slot 91 is opened on the side wall of the support seat 9.

[0036] The above are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An impurity cleaning device for grain before storage, characterized in that: include: A screening box (1) having an internal cavity in a cylindrical shape, a material inlet being provided at the top of the screening box (1), a plurality of first screening holes (11) being provided in the middle of the bottom of the screening box (1), a plurality of second screening holes (12) being provided at one side of the bottom of the screening box (1), the caliber of the second screening holes (12) being larger than the caliber of the first screening holes (11); A first material shifting assembly (2) is arranged in the screening box (1), and is used to perform horizontal reciprocating shifting of the grains to be screened that are input into the screening box (1); A discharge pipe (3) is vertically fixed at the bottom of the screening box (1) and is located directly below the plurality of first screening holes (11); A screening barrel (4) is fixed at the bottom of the screening box (1), and the barrel mouth of the screening barrel (4) is arranged opposite to the plurality of second screening holes (12); a screening plate (41) is horizontally erected and fixed in the screening barrel (4); the caliber of the screening holes on the screening plate (41) is the same as the caliber of the first screening holes (11); a discharge pipe (51) is connected to the side wall of the screening barrel (4) located above the screening plate (41); a conveying pipe (52) is provided on the side wall of the screening barrel (4) located below the screening plate (41); and two ends of the conveying pipe (52) are respectively connected to the screening barrel (4) and the discharge pipe (3); The second material shifting assembly (6) is arranged in the screening barrel (4), and is used to shift impurities located above the screening plate (41) into the impurity discharge pipe (51), and to shift the secondary screened grain located below the screening plate (41) into the conveying pipe (52).

2. The impurity cleaning equipment before grain storage according to claim 1 is characterized in that: The first material shifting component (2) comprises: A first rotary drive unit (21) connected to a side wall of the screening box (1), wherein the first rotary drive unit (21) has a reciprocating rotation function; A first shaft (22) is arranged in the screening box (1), one end of the first shaft (22) is connected to the output end of the first rotary drive unit (21), and the other end of the first shaft (22) is rotatably connected to the inner wall of the screening box (1); Two groups of spiral blades (23) are respectively fixed on both sides of the first shaft (22), and the rotation directions of the two groups of spiral blades (23) are opposite.

3. The impurity cleaning equipment before grain storage according to claim 2 is characterized in that: The second material shifting component (6) comprises: A second rotary drive unit (61) connected to the bottom of the screening barrel (4); A second rotating shaft (62) is vertically arranged in the screening barrel (4), one end of the second rotating shaft (62) extends outside the screening barrel (4) and is connected to the output end of the second rotating drive unit (61), and the other end of the second rotating shaft (62) extends above the screening plate (41); Two material shifting plates (63) are fixed on the side walls of the second rotating shaft (62) and are respectively located on the upper and lower sides of the material screening plate (41).

4. The impurity cleaning equipment before grain storage according to claim 3 is characterized in that: The end surface of the material-shifting plate (63) facing away from the second rotating shaft (62) is a curved surface, and the curved surface is in sliding contact with the inner wall of the material-screening barrel (4).

5. The impurity cleaning device before grain storage according to any one of claims 2 to 4, characterized in that: There are two groups of the screening barrel (4) and the second material shifting assembly (6), which are symmetrically arranged on both sides of the discharge pipe (3).

6. The impurity cleaning equipment before grain storage according to claim 5 is characterized in that: A fixed shaft (71) is provided at the inner center of the discharge pipe (3); the upper end of the fixed shaft (71) is fixed to the inner wall of the discharge pipe (3) via a connecting rod (72); a spiral guide blade (73) is fixedly mounted on the fixed shaft (71); a plurality of dust suction holes (31) are provided on the circumferential side wall of the discharge pipe (3); and a dust suction assembly is provided on the outer side of the discharge pipe (3).

7. The impurity cleaning equipment before grain storage according to claim 6 is characterized in that: The dust collection assembly comprises a cover shell (81) and a dust collection box (82); the cover shell (81) is fixedly sleeved on the outer wall of the fixed shaft (71), and the dust collection box (82) is fixed inside the cover shell (81).

8. The impurity cleaning equipment before grain storage according to claim 1 is characterized in that: A support seat (9) is fixed at the bottom of the discharge pipe (3), and a slanted discharge slot (91) is provided on the side wall of the support seat (9).

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