Rotary grain distributor

Abstract

A rotary drum is arranged at the lower end of a grain hopper, at least two chutes are arranged at the lower end of the side wall of the rotary drum, and each chute comprises fixed side plates on the two sides and a telescopic plate arranged at the bottom of the corresponding fixed side plate. The telescopic plate is composed of a plurality of connecting plates which are sequentially matched in a telescopic mode in the length direction of the chute, a moving block is fixedly arranged at the lower end of the connecting plate at the lowest position, and a linear driving mechanism is arranged and used for driving the moving block to linearly move in the telescopic direction of the telescopic plate. The overall length of the telescopic plate can be adjusted along with sliding between the connecting plates, in the grain distribution process, the telescopic plate is controlled to contract so that the grain falling radius of grains can be reduced, grain distribution is achieved in an area (under a chute) where grains cannot be distributed originally, the grain falling position is more flexible, the vacant area can be reduced to a large extent, and the grain distribution efficiency is improved. The automatic grading condition is effectively relieved, and the grain storage quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to grain storage equipment technical field, concretely relates to a rotary grain distributor. BACKGROUND

[0002] When some high silos store grain, usually grain is put into from the top, if grain is directly put into from the middle position of the top of the silo, a conical large grain pile is formed in the bottom of the silo after the grain falls into the silo, then the large grain pile needs to be leveled by artificial tools, and the workload and leveling difficulty of artificial leveling are large, and in addition, since impurities exist in the grain, the impurities are automatically classified and gathered during the grain storage process, the part where the impurities gather has high moisture content and small holes, which is not conducive to grain pile ventilation and heat dissipation, and microorganisms are easy to breed and gather, thereby causing problems such as grain heating and toxin change, and further affecting the quality of stored grain.

[0003] At present, a rotary grain distributor is usually arranged at the grain inlet of the silo to solve the automatic classification of the grain, and the common rotary grain distributors on the market are usually divided into two types: power type rotary disc throwing grain distributor and power type rotary chute grain distributor. Among them, the disc throwing diameter of the power type rotary disc throwing grain distributor is small, the radius of the thrown grain is limited, and it is difficult to reach the edge of the silo, and it is suitable for small silos, and the working principle of the power type rotary chute grain distributor is mainly to drive two groups of symmetrical chute to rotate by a motor, so that the grain falls into the chute from the grain hopper and is thrown out to achieve the effect of grain distribution.

[0004] But it is difficult to achieve uniform feeding in the silo by simply changing the motor speed: due to the length limitation of the chute, the grain cannot fall directly below the chute, thereby leaving an empty area directly below the chute, and as the height of the grain accumulation increases, the grain at the edge of the empty area is easy to slide naturally into the empty area, thereby causing automatic classification. SUMMARY

[0005] The application provides a rotary grain distributor, which can solve the problem that the existing rotary grain distributor is difficult to achieve uniform feeding in the silo by simply changing the motor speed.

[0006] To solve the above-mentioned technical problems, a rotary grain dispenser is provided, including a grain hopper, a rotating drum at the lower end of the grain hopper, the rotating drum being driven to rotate by a first motor, at least two chutes at the lower end of the side wall of the rotating drum, each chute including two fixed side plates and a telescopic plate disposed at the bottom of the fixed side plates, the telescopic plate being composed of multiple connecting plates that extend and retract sequentially along the length of the chutes, the two sides of the telescopic plate being guided and moved to the opposite sides of the corresponding two fixed side plates, the connecting plate closer to the rotating drum being higher in position, the highest connecting plate being fixedly connected to the fixed side plates, and the lowest connecting plate having a movable block fixed at its lower end, and a linear drive mechanism being provided to drive the movable block to move linearly along the telescopic direction of the telescopic plate.

[0007] In one embodiment, the linear drive mechanism includes a second lead screw, which is rotatably disposed below the telescopic plate along the moving direction of the moving block, and is provided with a second motor for driving the second lead screw to rotate. The moving block is disposed on the second lead screw and moves as the second lead screw rotates.

[0008] In one embodiment, a rectangular frame is provided below the telescopic plate, and the rectangular frame is fixedly connected to the chute to provide an installation position for the second lead screw.

[0009] In one embodiment, a second guide rod is provided on the rectangular frame along a direction parallel to the second lead screw, and the moving block is slidably connected to the second guide rod.

[0010] In one embodiment, a connecting block is fixed on the top surface of each connecting plate near the end of the rotating cylinder, and a sliding groove is provided on the bottom surface of each connecting plate along its extension direction. The connecting block is slidably connected to the sliding groove along the direction of the sliding groove, and the extension and retraction between two adjacent connecting plates are achieved by the sliding of the connecting block and the sliding groove.

[0011] In one embodiment, the cross-section of the groove is convex, and the shape of the connecting block corresponds to the groove.

[0012] In one embodiment, a wear-resistant coating is provided on the top surface of the connecting plate.

[0013] In summary, the rotary grain distributor described in this application has the following advantages compared to the prior art:

[0014] (1) With the sliding between the connecting plates, the overall length of the telescopic plate can be adjusted. During the grain distribution process, controlling the telescopic plate to shrink can reduce the grain falling radius, realize grain distribution in the area (directly below the chute) that cannot be distributed originally, make the grain falling position more flexible, greatly reduce the empty area, effectively reduce the automatic grading situation, and improve the grain storage quality.

[0015] (2) The telescopic plate can be controlled to extend or shrink by driving only the lowermost connecting plate, which is convenient and stable in structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a perspective view of the rotary grain distributor;

[0018] Figure 2 is a perspective view of the rotary grain distributor;

[0019] Figure 3 is a side view of the rotary grain distributor;

[0020] Figure 4 is Figure 3 is a sectional view along A-A in FIG. 4;

[0021] Figure 5 is Figure 4 is an enlarged view of the B area in FIG. 4;

[0022] Figure 6 is a front view of the rotary grain distributor;

[0023] Figure 7 is Figure 6 is a sectional view along C-C in FIG. 4.

[0024] In the drawings, 1 is a grain hopper, 2 is a rotating drum, 3 is a chute, 4 is a first motor, 5 is a telescopic plate, 6 is a connecting plate, 7 is a connecting block, 8 is a sliding groove, 9 is a moving block, 10 is a fixed side plate, 11 is a second lead screw, 12 is a second motor, 13 is a second guide rod, and 14 is a rectangular frame. DETAILED DESCRIPTION

[0025] For the convenience of understanding the utility model, the utility model is explained in more detail below in combination with the drawings and specific embodiments. The drawings show the preferred embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described in the specification. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0026] It should be noted that, unless otherwise defined, all technical and scientific terms used in the specification are the same as the meanings commonly understood by the person skilled in the art belonging to the technical field of the utility model. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not used to limit the utility model.

[0027] Please refer to Figure 1 , the existing rotary grain distributor, including hopper 1, the lower end of the hopper 1 is provided with rotating drum 2, the central axis of the rotating drum 2 coincides with the rotating shaft, both along the vertical direction, the rotating drum 2 is driven to rotate by the first motor 4 (usually adopts the way of gear transmission), the lower end of the side wall of the rotating drum 2 is symmetrically provided with two chutes 3, the chute 3 is obliquely downwardly extended and communicated with the rotating drum 2. The existing rotary grain distributor is mostly loaded by the conveying belt assembly (from the hopper 1). When the granary is large, the size of the rotary grain distributor also needs to be increased (mainly the chute 3 will be lengthened), because the falling grain radius is limited by only increasing the rotating speed. When the chute 3 of the rotary grain distributor is longer, the empty area below will be large. The above content is prior art, and the specific structure and working principle will not be introduced here.

[0028] Please refer to Figure 2 , in an embodiment, the chute (3) includes two fixed side plates (10) on both sides and a telescopic plate (5) arranged at the bottom of the fixed side plate (10), the telescopic plate (5) is composed of a plurality of connecting plates (6) which are telescopic matched along the length direction of the chute (3), the two sides of the telescopic plate (5) are guided and moved in cooperation with the opposite sides of the corresponding two fixed side plates (10), the position of the connecting plate 6 closer to the rotating drum 2 is higher, and the connecting plate 6 with the highest position is fixedly connected to the inner side wall of the fixed side plate 10 by welding. The inclination of the top surface of each connecting plate 6 is the same as that of the original bottom plate (the inclination is the inclination angle between it and the horizontal plane).

[0029] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5The lower end of each of the connecting plates (6) is fixedly provided with a moving block (9) which moves in a direction parallel to the connecting plate (6) above it, and two linear driving mechanisms are provided for driving the two moving blocks (9) to move, respectively. The moving block (9) is fixedly connected to the bottom surface of the lowest connecting plate (6) by welding, for driving the connecting plate (6) to slide, and further driving the telescopic plate (5) to extend or retract.

[0030] Working principle: With the telescopic movement of the connecting plates (6), the overall length of the telescopic plate (5) can be adjusted. During the grain distribution process, controlling the telescopic plate (5) to retract can reduce the grain falling radius, realize grain distribution in the area (directly below the chute 3) which cannot be reached by the original distribution, make the grain falling position more flexible, greatly reduce the idle area, effectively reduce the automatic grading, and improve the grain storage quality. The effect of controlling the telescopic plate (5) to extend or retract can be achieved by driving only the connecting plate (6) at the lower end, and the structure is convenient and stable.

[0031] Please refer to Figure 2 , Figure 4 In an embodiment, the linear driving mechanism comprises a second lead screw (11) which is rotatably arranged below the telescopic plate (5) along the moving direction of the moving block (9), and the center axis of the second lead screw (11) coincides with the rotation axis. A second motor (12) is arranged for driving the second lead screw (11) to rotate, the housing of the second motor (12) is fixedly arranged below the telescopic plate (5), and the output shaft of the second motor (12) is fixedly connected to the second lead screw (11). A lead screw nut matched with the second lead screw (11) is arranged in the moving block (9), and the moving block (9) is arranged on the second lead screw (11) through the lead screw nut, so that the moving block (9) moves linearly with the rotation of the second lead screw (11). In this way, the transmission efficiency is high, the stability and wear resistance are good, and the maintenance cost is low because the transmission is realized by the lead screw.

[0032] Please refer to Figure 1 , Figure 2 In an embodiment, a rectangular frame (14) is arranged below each of the telescopic plates (5), and the rectangular frame (14) is fixedly connected to the chute (3) by welding, for providing a mounting position for the second lead screw (11). The two ends of the second lead screw (11) are rotatably connected to the rectangular frame (14), and further, the housing of the second motor (12) is fixedly mounted on the rectangular frame (14). In this way, the rectangular frame (14) can provide a mounting position for the second lead screw (11), so that the overall structure is reasonable and stable, and further, the telescopic plate (5) is left with a grain falling position.

[0033] Please refer to Figure 2In one embodiment, each of the rectangular frames 14 is fixed with a second guide rod 13 in a direction parallel to the second screw rod 11, and the moving block 9 is provided with a through hole and is slidably connected to the second guide rod 13 through the through hole. In this way, the second guide rod 13 can support and guide the moving block 9, so that the sliding effect of the moving block 9 is more stable.

[0034] Please refer to Figure 4 、 Figure 5 In one embodiment, each of the connecting plates 6 is fixed with a connecting block 7 at one end near the rotating drum 2 by welding, and each of the connecting plates 6 is provided with a sliding groove 8 in the extension direction. The connecting block 7 is slidably connected to the sliding groove 8 in the setting direction of the sliding groove 8, and the adjacent two connecting plates 6 are slidably connected through the connecting block 7 and the sliding groove 8. In this way, the structure is reasonable and easy to realize.

[0035] Please refer to Figure 6 、 Figure 7 In one embodiment, the cross section of the sliding groove 8 is in the shape of a "convex" character, and the shape of the connecting block 7 corresponds to the sliding groove 8 (also in the shape of a "convex" character). In this way, the sliding effect is more stable.

[0036] Please refer to Figure 4 In one embodiment, the connecting block 7 on the highest connecting plate 6 can be omitted (removed), so that the structure is more smooth and beautiful.

[0037] In one embodiment, each of the connecting plates 6 is provided with a wear-resistant coating on the top surface to improve its wear resistance. Since the grain flows over the top surface of the connecting plate 6, improving the wear resistance of this part can avoid the impact on the grain placing effect caused by wear.

[0038] In the above description of the present specification, unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected" or "linked" and the like should be understood in a broad sense. For example, as to the term "connected", it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise explicitly limited in the present specification, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0039] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the present application and simplifying the description, and are not explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the technical solutions of the present application.

[0040] In addition, the terms "first" or "second" and the like used in the present specification are terms used to refer to numbers or ordinal numbers only for the purpose of description, and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

[0041] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary grain distributor comprising a grain hopper (1) provided with a rotating drum (2) at its lower end, the rotating drum (2) being driven to rotate by a first motor (4), and the rotating drum (2) being provided with at least two chutes (3) at the lower end of its side wall, characterized in that, The chute (3) comprises two fixed side plates (10) and a telescopic plate (5) arranged at the bottom of the fixed side plates (10), the telescopic plate (5) is composed of a plurality of connecting plates (6) which are telescopic matched along the length direction of the chute (3), the two sides of the telescopic plate (5) are guided and moved in cooperation with the opposite sides of the two fixed side plates (10), the position of the connecting plate (6) closer to the rotating drum (2) is higher, the connecting plate (6) with the highest position is fixedly connected to the fixed side plate (10), the lower end of the connecting plate (6) with the lowest position is fixedly provided with a moving block (9), and a linear driving mechanism is arranged for driving the moving block (9) to move linearly along the telescopic direction of the telescopic plate (5).

2. A rotary grain distributor according to claim 1, wherein The linear driving mechanism comprises a second screw rod (11), the second screw rod (11) is arranged below the telescopic plate (5) along the moving direction of the moving block (9), and a second motor (12) is arranged for driving the second screw rod (11) to rotate, the moving block (9) is arranged on the second screw rod (11) and moves with the rotation of the second screw rod (11).

3. A rotary grain distributor according to claim 2, wherein, A rectangular frame (14) is arranged below the telescopic plate (5), the rectangular frame (14) is fixedly connected to the chute (3) and provides a mounting position for the second screw rod (11).

4. A rotary grain distributor according to claim 3, wherein, A second guide rod (13) is arranged on the rectangular frame (14) in parallel to the second screw rod (11), and the moving block (9) is slidably connected to the second guide rod (13).

5. A rotary grain distributor according to claim 1, wherein, A connecting block (7) is fixedly arranged on one end of the top surface of each connecting plate (6) close to the rotating drum (2), and a sliding groove (8) is arranged on the bottom surface of each connecting plate (6) along the telescopic direction, the connecting block (7) is slidably connected to the sliding groove (8) along the arrangement direction of the sliding groove (8), and the adjacent two connecting plates (6) are telescopically connected through the cooperation of the connecting block (7) and the sliding groove (8).

6. A rotary grain distributor according to claim 5, wherein, The cross section of the sliding groove (8) is in the shape of "convex", and the shape of the connecting block (7) corresponds to the sliding groove (8).

7. A rotary grain distributor according to claim 1 wherein, A wear-resistant coating is arranged on the top surface of the connecting plate (6).

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