Rotary grain distributor

Abstract

The utility model relates to a rotary grain distributor which comprises a support, a grain leakage barrel with the rotating axis extending in the vertical direction is rotationally assembled on the support, the rotary grain distributor further comprises a grain leakage barrel driving mechanism for driving the grain leakage barrel to rotate, and a swing arm with the rotating axis extending in the vertical direction is rotationally assembled at the bottom of the grain leakage barrel. The rotating axis of the swing arm and the axis of the grain leaking barrel are arranged in parallel, a movable sealing door is arranged on the swing arm, and the movable sealing door is provided with a closing station used for blocking the center grain outlet and an opening station used for opening the center grain outlet in the swing process of the swing arm. The swing arm is connected with a swing arm reset spring used for driving the movable sealing door to be in the opening station when the grain leaking barrel is at the first speed, the bottom of the grain leaking barrel is further provided with a limiting structure used for limiting the movable sealing door to be in the closing station when the grain leaking barrel is at the second speed, and the second speed is larger than the first speed. The technical problem that the height difference between a central grain pile and a peripheral grain pile is large due to the fact that grains are continuously discharged from a central grain outlet when the grains are distributed at different rotating speeds in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to grain distribution equipment in the operation of bulk grain entering a warehouse, in particular to a rotary grain distributor. Background Art

[0002] When bulk grain is stored in a building warehouse, the silo uses the bulk grain conveying equipment on the silo roof to transport the bulk grain to the top of the corresponding warehouse chamber. A grain leakage port is provided on the top of the warehouse chamber. The bulk grain is sent to the grain leakage port through the bulk grain conveying equipment, and then falls into the bottom of the warehouse chamber through the grain leakage port.

[0003] In order to improve the uniformity of the grain distribution process, it is necessary to set a rotating grain distributor at the grain leakage port. The existing rotating grain distributor is such as the "rotating material distribution device" disclosed in Chinese patent CN220975853U, which includes a vertically arranged grain leakage barrel, the upper end of the grain leakage barrel is the grain inlet, the lower end of the grain leakage barrel is the central grain outlet, and the side wall of the grain leakage barrel is provided with at least two side wall grain outlets spaced along the circumferential direction, the side wall grain outlets are located on the upper side of the central grain outlet, and each side wall grain outlet is connected to a feed chute, and the feed chute has a chute outlet located outside the central grain outlet, and the height of the chute outlet is lower than the side wall outlet. The rotating material distribution device also includes a grain leakage barrel drive mechanism that is transmission-connected to the grain leakage barrel to drive the grain leakage barrel to rotate.

[0004] When in use, the grain leaking barrel driving mechanism drives the grain leaking barrel to rotate, and the loose grain enters the grain leaking barrel through the grain inlet. Part of the loose grain falls to the lower side of the grain leaking barrel through the central grain outlet to form a central grain pile, and the rest of the loose grain is thrown to the periphery of the central grain pile through the discharge chutes, thereby improving the uniformity of the loose grain distribution process. When it is necessary to expand the grain distribution range, the rotation speed of the grain leaking barrel is increased, and the loose grain can be thrown to a farther position through the discharge chutes. The existing problem of this type of rotary grain distributor is that when the grain leaking drum distributes grain in a small area and a large area at different rotation speeds, the central grain outlet is always in an open state, so the height of the central grain pile is increasing. Therefore, after the grain distribution is completed, the entire grain pile will still have a large height difference with a higher height in the central area and a lower height in the outer area, and corresponding grain leveling equipment is still required to perform a large workload of grain leveling operations; in addition, when the grain leaking drum distributes grain at high speed, the radius of the entire grain distribution area becomes larger. In principle, the loading and unloading chutes need more grain to meet the grain distribution needs. However, in the prior art, since the central grain outlet is still in a grain leaking state, the unloading chute cannot get more grain, which will affect the final grain distribution efficiency and also cause the height difference between the central grain pile and the surrounding grain piles to become larger and larger. Utility Model Content

[0005] The utility model aims to provide a rotary grain distributor to solve the technical problem in the prior art that when distributing grain at different rotation speeds, a central grain outlet continuously discharges grain, resulting in a large height difference between a central grain pile and a peripheral grain pile.

[0006] In order to solve the above technical problems, the technical solution of a rotary grain distributor in the utility model is as follows:

[0007] A rotary grain distributor comprises a bracket, on which a grain leakage drum with a rotation axis extending in an up-down direction is rotatably mounted, and also comprises a grain leakage drum driving mechanism for driving the grain leakage drum to rotate, wherein the upper end of the grain leakage drum is provided with a grain inlet, and the lower end of the grain leakage drum is a central grain outlet, and at least two side wall grain outlets arranged along the circumferential direction are arranged on the side wall of the grain leakage drum, and a material distribution chute is arranged on the side wall grain outlet, characterized in that: the bottom of the grain leakage drum is rotatably mounted with a swing arm with a rotation axis extending in an up-down direction, the rotation axis of the swing arm is arranged in parallel with the axis of the grain leakage drum, a movable sealing door is arranged on the swing arm, and the movable sealing door has a closing position for blocking the central grain outlet and an opening position for opening the central grain outlet during the swinging process of the swing arm, a swing arm reset spring is connected to the swing arm for the grain leakage drum to be in the open position with the movable sealing door at a first speed, and a limiting structure is also provided at the bottom of the grain leakage drum for limiting the movable sealing door to the closing position when the grain leakage drum is at a second speed, and the second speed is greater than the first speed.

[0008] Furthermore, a counterweight connecting rod is arranged at one end of the swing arm away from its rotation axis, and a counterweight block is arranged at one end of the counterweight connecting rod away from the swing arm.

[0009] Furthermore, the counterweight connecting rod is arranged perpendicular to the swing arm.

[0010] Furthermore, a grain feeding drum is fixedly provided at the upper end of the bracket, the lower end of the grain feeding drum extends into the grain feeding port of the grain leaking drum, a grain leaking drum transmission wheel is fixed at the upper end of the grain leaking drum, and the power output end of the grain leaking drum driving mechanism is connected to the grain leaking drum transmission wheel through a transmission belt.

[0011] Furthermore, the bottom of the grain leakage barrel is connected to a conical guide bucket with a small upper part and a large lower part through a connecting bracket. The conical guide bucket is arranged coaxially with the grain leakage barrel. The upper end of the conical guide bucket has a guide bucket center hole with a diameter smaller than the central grain outlet. The guide bucket center hole is located on the lower side of the movable sealing door. The conical guide bucket has an outer conical surface for guiding loose grain in a direction away from the axis of the conical guide bucket.

[0012] Furthermore, the connecting bracket includes three vertical rods arranged at intervals along the circumferential direction, the upper ends of the vertical rods are connected to the bottom of the grain leakage barrel, the lower end of the grain leakage barrel is connected to the upper end of the conical guide bucket, one of the vertical rods is connected to a spring support, the swing arm reset spring is connected between the spring support and the swing arm, and the limiting structure is composed of the corresponding side surface of another vertical rod.

[0013] Furthermore, the spring support is perpendicular to the corresponding vertical rod, and the swing arm return spring is a tension spring.

[0014] The beneficial effects of the utility model are as follows: when the rotary grain distributor of the utility model is in use, the grain leakage drum driving mechanism rotates the grain leakage drum to realize grain distribution. When the first speed is used, the movable sealing door is subjected to a smaller rotational centrifugal force. Under the action of the swing arm reset spring, the movable sealing door is in the open position of opening the central grain outlet. The loose grain can fall to the lower side of the grain leakage drum through the central grain outlet, or fall to the periphery of the grain leakage drum through the side wall grain outlet. When it is necessary to increase the grain distribution distance, the rotation speed of the grain leakage drum is increased to the second speed. At this time, the movable sealing door is subjected to a larger rotational centrifugal force. The rotational centrifugal force enables the swing arm to overcome the action of the swing arm reset spring and move forward. The movable sealing door swings with the swing arm to the closing position of closing the central grain outlet. At this time, the loose grain will only be thrown to the periphery through the side wall grain outlet and the material distribution chute. In this process, the central grain outlet will no longer leak grain, thus avoiding the problem of excessive height of the central grain pile on the lower side of the grain leakage barrel caused by the central grain outlet always discharging grain; at the same time, since the central grain outlet no longer leaks grain at this time, the grain output from the side wall grain outlet can be increased, and more efficient peripheral grain distribution can be achieved. When the grain distribution is completed, the speed of the grain leakage barrel stops, and the movable sealing door opens the central grain outlet, and the loose grain accumulated at the bottom of the grain leakage barrel is discharged through the central grain outlet, without causing grain accumulation in the grain leakage barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 yes Figure 1 Left view of

[0018] Figure 3 yes Figure 1 Right view of;

[0019] Figure 4 yes Figure 1 Top view;

[0020] Figure 5 yes Figure 1 Stereoscopic image of

[0021] Figure 6 yes Figure 3 AA section view;

[0022] Figure 7 It is a schematic diagram of the state of the movable sealing door in the utility model when viewed from the upward direction and when it is in the closed position;

[0023] Figure 8 It is a schematic diagram of the state of the movable sealing door in the utility model when viewed from the upward direction and in the open position;

[0024] Fig. 9 yes Figure 6 The enlarged view of point B in the figure;

[0025] 1. Floor; 2. Motor mounting frame; 3. Motor; 4. Control box; 5. Upper dust cover; 6. Clamp; 7. Lower dust cover; 8. Material distribution chute; 9. Grain leakage barrel; 10. Swing arm reset spring; 11. Movable sealing door; 12. Conical guide bucket; 13. Dust cover cover; 14. Bearing seat; 15. Bearing seat mounting frame; 16. Motor shaft drive wheel; 17. Grain feeding barrel; 18. Grain leakage barrel drive wheel; 19. Slewing bearing; 20. Mounting plate; 21. Tensioning wheel; 22. Counterweight connecting rod; 23. Counterweight block; 24. Side wall grain outlet; 25. Swing arm; 26. Swing arm support; 27. Center grain outlet; 28. Center hole of guide bucket; 29. ​​Vertical rod; 30. Spring support. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] In the utility model, a rotary grain distributor is implemented as follows Figures 1 to 9 As shown; it includes a bracket installed on the floor 1, and the bracket is rotatably equipped with a grain-leaking barrel 9 with a rotation axis extending in the up-down direction through a slewing bearing 19. The upper end of the grain-leaking barrel 9 has a grain inlet, and the lower end of the grain-leaking barrel is a central grain outlet 27. The rotary grain distributor also includes a grain-leaking barrel driving mechanism that drives the grain-leaking barrel to rotate. In this embodiment, the grain-leaking barrel driving mechanism includes a motor 3 installed on a motor mounting frame, and the motor is controlled by a control box. The motor is connected to the grain-leaking barrel through a transmission belt. Specifically, a grain-leaking barrel transmission wheel 18 is fixed to the upper end of the grain-leaking barrel, and a motor shaft transmission wheel 16 is fixed to the motor shaft of the motor. The motor shaft transmission wheel 16 is connected to the grain-leaking barrel transmission wheel 18 through a transmission belt. Item 14 in the figure represents a bearing seat; item 15 represents a bearing seat mounting frame; item 21 represents a tensioning wheel for tensioning the transmission belt.

[0029] A grain feeding cylinder 17 is fixedly arranged on the bracket, and the lower end of the grain feeding cylinder 17 extends into the grain feeding port of the grain leakage cylinder. A lower dust cover 7 is arranged on the periphery of the grain feeding cylinder, and the upper end of the lower dust cover is connected to an upper dust cover 5 through a clamp 6.

[0030] The side wall of the grain-leaking barrel is provided with three side wall grain outlets 24 arranged at intervals along the circumferential direction, and a material distribution chute 8 is provided on the side wall grain outlet 24, and the material distribution chute 8 gradually extends downward in a direction away from the axis of the grain-leaking barrel. The height of the side wall grain outlet is higher than the central grain outlet 27, and the diameter of the central grain outlet 27 gradually decreases from top to bottom.

[0031] The bottom of the grain leaking barrel is connected to a conical guide hopper 12 with a small top and a large bottom through a connecting bracket. The conical guide hopper 12 is coaxially arranged with the grain leaking barrel. The upper end of the conical guide hopper has a guide hopper center hole 28 with a smaller diameter than the central grain outlet. The conical guide hopper 12 has an outer cone surface for guiding the loose grain in a direction away from the axis of the conical guide hopper. In this embodiment, the connecting bracket includes three vertical rods 29 arranged at intervals along the circumference. The upper end of the vertical rod 29 is connected to the bottom of the grain leaking barrel 9, and the lower end of the grain leaking barrel 9 is connected to the upper end of the conical guide hopper 12. When in use, the loose grain in the central area discharged through the central grain outlet falls vertically through the guide hopper center hole, and the loose grain outside the guide hopper center hole is evenly guided to the periphery of the guide hopper center hole through the outer cone surface at the upper end of the conical guide hopper. The maximum diameter of the outer cone surface is larger than the diameter of the central grain outlet, so that the diameter of the central grain pile on the lower side of the central grain outlet can be increased.

[0032] A swing arm support 26 is provided at the bottom of the grain leaking barrel. The swing arm support includes a fixed vertical sleeve. The lower end of the vertical sleeve is threadedly connected to a swing arm shaft. A swing arm 25 is rotatably mounted on the swing arm shaft through a rotating bearing. The rotation axis of the swing arm 25 is arranged in parallel with the axis of the grain leaking barrel. A movable sealing door 11 is fixed on the upper side of one end of the swing arm away from the swing arm support. The movable sealing door 11 is a circular plate structure. The movable sealing door 11 can move horizontally with the swing arm 25. The movable sealing door 11 has a closing position for blocking the central grain outlet and an opening position for opening the central grain outlet during the swinging of the swing arm. The swing arm is connected to a swing arm reset spring 10 for the grain leaking barrel to be in the opening position with the movable sealing door at the first speed. A limiting structure for limiting the movable sealing door to the closing position when the grain leaking barrel is at the second speed is also provided at the bottom of the grain leaking barrel. The second speed is greater than the first speed.

[0033] In this embodiment, a counterweight connecting rod 22 is fixed to the end of the swing arm 25 away from its rotation axis. The counterweight connecting rod 22 is arranged perpendicular to the swing arm 25. A counterweight block 23 is arranged at the end of the counterweight connecting rod 22 away from the swing arm. The counterweight block 23 is used to increase the centrifugal force exerted on the swing arm when the swing arm rotates with the grain leakage drum.

[0034] A spring support 30 is connected to one of the vertical rods 29. The spring support is a horizontal rod structure perpendicular to the corresponding vertical rod. The swing arm return spring 10 is a tension spring connected between the spring support 30 and the swing arm 25. The limiting structure is formed by the corresponding side surface of the other vertical rod. The conical guide scoop 12 is located at the lower side of the swing arm 25.

[0035] That is to say, in the present invention, the swing arm is located between two adjacent vertical rods in the circumferential direction. When the grain leakage drum rotates slowly, the centrifugal force applied to the swing arm is small. Under the action of the swing arm reset spring, the movable sealing door on the swing arm opens the central grain outlet at the bottom of the grain leakage drum. At this time, the loose grain can be discharged through the central grain outlet and the side wall grain outlet. When the grain leakage drum rotates quickly, the centrifugal force applied to the swing arm becomes larger, and the swing arm overcomes the action of the swing arm reset spring. The movable sealing door on the swing arm moves to the closing position of closing the central discharge port, and the swing arm is blocked by the corresponding vertical rod and limited to the closing position. At this time, the loose grain can only be distributed through the side wall discharge port and the distribution chute.

[0036] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0037] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0038] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A rotary grain distributor, comprising a bracket, a grain-leaking drum with a rotation axis extending in the up-down direction rotatably mounted on the bracket, and a grain-leaking drum driving mechanism for driving the grain-leaking drum to rotate, wherein the upper end of the grain-leaking drum has a grain inlet, the lower end of the grain-leaking drum is a central grain outlet, at least two side wall grain outlets spaced apart in the circumferential direction are arranged on the side wall of the grain-leaking drum, and a material distribution chute is arranged on the side wall grain outlet, characterized in that: The bottom of the grain leaking barrel is rotatably equipped with a swing arm whose rotation axis extends in the up-and-down direction, the rotation axis of the swing arm is arranged in parallel with the axis of the grain leaking barrel, and a movable sealing door is arranged on the swing arm. The movable sealing door has a closing position for blocking the central grain outlet and an opening position for opening the central grain outlet during the swinging of the swing arm, and a swing arm reset spring is connected to the swing arm for bringing the movable sealing door into the open position when the grain leaking barrel is at the first speed. A limiting structure is also provided at the bottom of the grain leaking barrel for limiting the movable sealing door to the closing position when the grain leaking barrel is at the second speed, and the second speed is greater than the first speed.

2. The rotary grain distributor according to claim 1, characterized in that: A counterweight connecting rod is arranged at one end of the swing arm away from the rotation axis thereof, and a counterweight block is arranged at one end of the counterweight connecting rod away from the swing arm.

3. The rotary grain distributor according to claim 2, characterized in that: The counterweight connecting rod is arranged perpendicular to the swing arm.

4. The rotary grain distributor according to claim 1, characterized in that: A grain feeding drum is fixedly arranged on the upper end of the bracket, and the lower end of the grain feeding drum extends into the grain feeding port of the grain leaking drum. A grain leaking drum transmission wheel is fixed on the upper end of the grain leaking drum, and the power output end of the grain leaking drum driving mechanism is connected to the grain leaking drum transmission wheel through a transmission belt.

5. The rotary grain distributor according to any one of claims 1 to 4, characterized in that: The bottom of the grain leakage barrel is connected to a conical guide bucket with a small upper part and a large lower part through a connecting bracket. The conical guide bucket is arranged coaxially with the grain leakage barrel. The upper end of the conical guide bucket has a guide bucket center hole with a diameter smaller than the central grain outlet. The guide bucket center hole is located on the lower side of the movable sealing door. The conical guide bucket has an outer conical surface for guiding loose grain in a direction away from the axis of the conical guide bucket.

6. The rotary grain distributor according to claim 5, characterized in that: The connecting bracket includes three vertical rods arranged at intervals along the circumference. The upper ends of the vertical rods are connected to the bottom of the grain leakage barrel, and the lower end of the grain leakage barrel is connected to the upper end of the conical guide bucket. One of the vertical rods is connected to a spring support, and the swing arm reset spring is connected between the spring support and the swing arm. The limiting structure is composed of the corresponding side surface of another vertical rod.

7. The rotary food distributor according to claim 6, characterized in that: The spring support is perpendicular to the corresponding vertical rod, and the swing arm return spring is a tension spring.

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