CN-121990393-A - Air film type auxiliary grain discharging system and technology for shallow circular bin

CN121990393ACN 121990393 ACN121990393 ACN 121990393ACN-121990393-A

Abstract

The invention discloses a gas film type auxiliary grain discharging system and a process for a shallow circular bin, and relates to the related technical field of grain storage equipment; the auxiliary grain discharging system comprises ultrasonic vibration devices which are respectively arranged at the tail end positions of main air channels in a granary, wherein a plurality of branch air channels with arc structures are arranged on each main air channel, air film columns are arranged between two adjacent branch air channels of the same main air channel in the granary, and an air charging device is arranged outside the granary and communicated with the air film columns through pipelines and can charge air into the air film columns, so that the inflated air film columns push grain piles, change the repose angles of the grain piles and continue to flow mechanical grain discharging. The auxiliary grain discharging system, the granary and the auxiliary grain discharging process can effectively destroy the static angle of grains, eliminate dead corners of discharged grains and improve the mechanized grain discharging efficiency.

Inventors

LIU XUGUANG
LIN XUGUANG
LIU GUOMIN
SHEN ZONGHAI
OUYANG JIANXUN
CHEN ZHENGGEN
JIANG GUANGJIAN
WANG LIXIN
LUO HAO
YANG XIAOFEI
TAO HAILIN
ZHU YANGUANG

Assignees

中央储备粮淮北直属库有限公司

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (10)

1. The air film type auxiliary grain discharging system for the shallow circular bin is characterized by comprising the following components: The ultrasonic vibration device is respectively arranged at the tail end positions of the main air channels in the granary, and each main air channel is provided with a plurality of branch air channels with arc structures; The air film column is arranged between two adjacent branch air ducts of the same main air duct in the granary and The air charging device is arranged outside the granary and is communicated with the air film column through a pipeline, and can charge air into the air film column, so that the inflated air film column pushes the grain pile, the repose angle of the grain pile is changed, and the grain is discharged by the continuous flowing machinery.
2. The air film type auxiliary grain discharging system for the shallow round bin of claim 1, wherein the ultrasonic vibration device comprises ultrasonic transducers respectively arranged at the tail end position of a main air duct in the grain bin, the ultrasonic transducers are electrically connected with an ultrasonic generator through wires, and the ultrasonic generator is positioned outside the grain bin.
3. The air film type auxiliary grain discharging system for the shallow round bin according to claim 1, wherein the maximum heights of the air film columns after being inflated are different, and the maximum height of the air film columns near the center of the bin after being inflated is larger than the maximum height of the air film columns near the edge of the bin after being inflated.
4. The air film type auxiliary grain discharging system for shallow round bins according to claim 1, wherein the air film column comprises a top film and a surrounding wall, and the top film and the surrounding wall are used for inflating in a closed space formed by surrounding.
5. The air film type auxiliary grain discharging system for the shallow round bin of claim 4, wherein annular reinforcing ribs and radial reinforcing ribs are arranged in a staggered mode in the air film column.
6. The air film type auxiliary grain discharging system for shallow round bins according to claim 5, wherein the air film column is of a double-layer air film column structure.
7. The air film type auxiliary grain discharging system for shallow round bins according to claim 1, wherein the thickness of the air film column after being inflated is 10cm.
8. The air film type auxiliary grain discharging system for the shallow round bin of claim 1, wherein an air charging pipe is arranged in the air film column in a penetrating mode, an opening is formed in the side wall of the air charging pipe and communicated with the inside of the air film column, the air charging pipe is communicated with an air nozzle adjacent to the branch air duct, and the air nozzle is externally connected with an air charging device.
9. The air film type auxiliary grain discharging system for the shallow round bin disclosed by claim 2 is characterized in that the grain bin comprises a bin body, a plurality of overground ventilation cages are arranged in the bin body, each overground ventilation cage comprises a main air duct which is horizontally arranged along the radial direction of the bin body, a plurality of arc-shaped branch air ducts are sequentially arranged on the main air duct, virtual circles where the branch air ducts are arranged are concentric with the bin body, one ultrasonic vibration device is arranged in each overground ventilation cage, and a mechanical grain discharging device can be externally connected to a bin door of the grain bin.
10. A gas film type auxiliary grain discharging process for a shallow circular bin is characterized by comprising the following steps of: Opening a bin door, externally connecting a mechanical grain discharging device at the bin door of the granary, and opening grain discharging operation; During grain discharging, the friction engagement state among grain particles is broken through high-frequency vibration of the ultrasonic vibration device, and grain is promoted to continuously slide to the mechanical grain discharging device along an inclined plane under the action of gravity; When grain piles around the granary no longer flow in the grain discharging process, an air inflation device is adopted to inflate air film columns around the granary through an air nozzle, and the air film columns are inflated to push grains at the bottom of the grain piles and around the wall body, so that the static angle of the grains is changed, and the grains continue to flow out of the grains.

Description

Air film type auxiliary grain discharging system and technology for shallow circular bin Technical Field The invention relates to the technical field related to grain storage equipment, in particular to a gas film type auxiliary grain discharging system and technology for a shallow circular bin. Background Grain storage is a key link for guaranteeing grain safety and stabilizing market supply, wherein a floor type shallow round bin is wider in application due to relatively low construction cost, and is used for improving the self-discharge grain efficiency of stored grains, a high-position grain outlet is arranged on the outer wall of the bin which is 4.5-5.5m above the ground, a low-position grain outlet is arranged at a position about 1m above the ground, and self-flow grain unloading is realized by relying on grain dead weight. However, grains can form a static angle of 30-45 degrees due to mutual friction among grains in the stacking process, and when the included angle between the stacking surface of the grains and the ground is smaller than 30 degrees, a stable slope grain surface can be formed, so that the grains cannot continue to flow automatically. Under the condition, the self-flowing operation of the low-position grain outlet can be stopped due to the stable inclined plane of the grain pile, and the grain is manually fed into the bin to assist in grain discharging, so that the labor efficiency is greatly reduced. Meanwhile, the scattering property of grains can be obviously influenced in the grain discharging process, so that the grain discharging machinery needs to frequently move to adjust the operation position, the operation complexity of equipment is increased, and the mechanization degree and the overall efficiency of the grain discharging operation are greatly reduced. Particularly, a stable slope is easy to form between the grain pile and the low-position grain outlet of the bin wall at the middle part of the bin, so that the grain flow is blocked, the grain outlet speed is severely restricted, and the grain flowing dead angle exists in the bin, so that the problems of low grain outlet efficiency and high labor cost are further aggravated. Therefore, a technical scheme capable of effectively destroying the grain repose angle, eliminating the grain discharging dead angle and improving the mechanized grain discharging efficiency is needed to be designed. Disclosure of Invention The invention aims to provide a gas film type auxiliary grain discharging system and a gas film type auxiliary grain discharging process for a shallow circular bin, which are used for solving the problems in the prior art, effectively destroying the repose angle of grains, eliminating the dead angle of grain discharging and improving the mechanical grain discharging efficiency. In order to achieve the above object, the present invention provides the following solutions: the invention provides a gas film type auxiliary grain discharging system for a shallow circular bin, which comprises the following components: The ultrasonic vibration device is respectively arranged at the tail end positions of the main air channels in the granary, and each main air channel is provided with a plurality of branch air channels with arc structures; The air film column is arranged between two adjacent branch air ducts of the same main air duct in the granary and The air charging device is arranged outside the granary and is communicated with the air film column through a pipeline, and can charge air into the air film column, so that the inflated air film column pushes the grain pile, the repose angle of the grain pile is changed, and the grain is discharged by the continuous flowing machinery. In an embodiment, the ultrasonic vibration device comprises ultrasonic transducers respectively arranged at the tail end positions of the main air duct in the granary, wherein the ultrasonic transducers are electrically connected with an ultrasonic generator through wires, and the ultrasonic generator is positioned outside the granary. In one embodiment, the maximum heights of the plurality of air film columns after inflation are different, and the maximum height of the air film columns after inflation near the center of the granary is larger than the maximum height of the air film columns after inflation near the edge of the granary. In one embodiment, the gas film column comprises a top film and a surrounding wall, wherein the top film and the surrounding wall are used for inflating in an enclosed space formed by surrounding. In one embodiment, annular reinforcing ribs and radial reinforcing ribs are arranged in a staggered manner in the air film column. In one embodiment, the air film column is a double-layer air film column structure. In one embodiment, the thickness of the gas film column after inflation is 10cm. In one embodiment, an air inflation tube is arranged in the air film column in a penetrating way, an opening is formed in the side