Porous granular ammonium nitrate stock bin

Abstract

The utility model relates to the technical field of material storage equipment, and discloses a porous granular ammonium nitrate stock bin which comprises an upper stock bin and a controller, a stock bin top cover is fixed at the top of the upper stock bin, a speed reducer is fixed in the center of the top of the stock bin top cover, the rotating end of the speed reducer penetrates through the stock bin top cover and is fixedly provided with a rotating shaft, and the rotating shaft is connected with the controller. A plurality of stirring blades are fixed at equal intervals in a circle center array on the outer surface of the rotating shaft. According to the utility model, by adopting the two feed ports, the conical height of porous granular nitric acid accumulated at the feed ports is reduced, so that the space utilization rate of the stock bin in a natural feeding state is improved, and the accumulation height can be reduced by half compared with the accumulation height of one feed port; the material level sensor conveys the material to the controller, and the controller starts the speed reducer to drive the rotating shaft and the stirring blades to flatten the stacked materials at the two discharging openings, so that the space utilization rate of the stock bin is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of material storage equipment, in particular to a porous granular ammonium nitrate silo. Background Art

[0002] At present, ground stations for mixed explosives often need to store a certain amount of porous granular ammonium nitrate, so they need relatively large silos for storage.

[0003] The top of the more commonly used silo needs to be placed with some automated equipment, so the top of the silo is flat, with a feed port set on the top. When the porous granular ammonium nitrate is filled into the silo through the feed port, due to the characteristics of the material, it will form a cone when approaching the top of the silo, resulting in a certain amount of free space on the top of the silo, and the space utilization rate of the silo is not high.

[0004] Chinese utility model patents with authorization announcement numbers CN207890692U and CN205634275U disclose a material dispersing device for a storage silo, comprising a silo body, a feed hopper connected to the interior of the silo body disposed on the outside of the silo body's top wall, a telescopic hydraulic cylinder fixedly connected to the inside of the silo body's top wall, the axis of the telescopic hydraulic cylinder being perpendicular to the plane of the silo body's top wall, and a hydraulic station for driving the telescopic hydraulic cylinder to extend and retract disposed on the outside of the silo body's top wall.

[0005] A motor is coaxially mounted on the telescopic hydraulic cylinder's end, away from the top of the hopper. The motor's base is fixedly connected to the telescopic hydraulic cylinder, and the motor's shaft end is fixedly connected to a material distribution assembly located below the feed hopper. When material is fed downward through the feed port, the device activates and rotates. As the material level rises, the distribution assembly also rises, flattening the material.

[0006] The structure of the device is too complicated. It is in operation during the entire process of filling the material into the silo. The hydraulic system, motor drive system and high-pressure air consume a lot of energy. During operation, there are problems such as parts falling off, the feeding device failing to rise in time due to excessive material due to the large radius of the silo, and the stirring device breaking and the motor being damaged. Utility Model Content

[0007] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide a porous granular ammonium nitrate silo to improve the space utilization of the silo.

[0008] According to the porous granular ammonium nitrate silo proposed in the utility model, it includes an upper silo and a controller, a silo top cover is fixed on the top of the upper silo, a reducer is fixed at the top center of the silo top cover, the rotating end of the reducer passes through the silo top cover and is fixed with a rotating shaft, a plurality of stirring blades are fixed at equal intervals in an array at the center of a circle on the outer surface of the rotating shaft, a plurality of material level sensors are fixed vertically and equidistantly on the inner side wall of the upper silo, and feed ports are provided on the top of the silo top cover and on both sides of the reducer.

[0009] Preferably, a lower silo is fixed at the bottom of the upper silo, and a discharge port is fixed at the bottom of the lower silo.

[0010] Preferably, the outer side wall of the loading bin is circular and has a plurality of support ears fixed thereon at equal intervals.

[0011] Preferably, the controller is signal-connected to the material level sensor.

[0012] Preferably, the stirring blade is a vertical rectangle.

[0013] Preferably, the stirring blade is positioned offset from the feed port.

[0014] Preferably, the upper silo is cylindrical and the lower silo is inverted conical.

[0015] The beneficial effects of the present invention are as follows: by adopting two feed ports, the conical height of the accumulation of porous granular nitric acid at the feed port is reduced, thereby improving the silo space utilization rate under the natural feeding state. Compared with one feed port, the accumulation height can be reduced by half. When the material accumulation height is close to the beginning of conical accumulation, the material level sensor transmits it to the controller, and the controller starts the reducer to drive the rotating shaft and the stirring blades to flatten the accumulated materials at the two discharge ports, further improving the silo space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the porous granular ammonium nitrate silo proposed in the utility model.

[0017] Figure 2 This is a schematic diagram of the top structure of the porous granular ammonium nitrate silo proposed in the utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the porous granular ammonium nitrate silo proposed in the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the upper silo of the porous granular ammonium nitrate silo proposed in the utility model when viewed from above.

[0020] In the figure: 1. Upper silo; 2. Silo cover; 3. Reducer; 4. Rotating shaft; 5. Stirring blade; 6. Level sensor; 7. Feed inlet; 8. Lower silo; 9. Discharge port; 10. Support ears. DETAILED DESCRIPTION

[0021] Reference Figure 1-4 , a porous granular ammonium nitrate silo includes an upper silo 1 and a controller. The bottom of the upper silo 1 is integrally formed with a lower silo 8. The upper silo 1 and the lower silo 8 are made of corrosion-resistant metals such as stainless steel and stainless steel. A silo cover 2 is fixed on the top of the upper silo 1. The top center of the silo cover 2 is threadedly connected to a reducer 3. The rotating end of the reducer 3 passes through the silo cover 2 and is fixed with a rotating shaft 4. A plurality of stirring blades 5 are fixed at equal intervals in a circle center array on the outer surface of the rotating shaft 4. A plurality of material level sensors 6 are fixed vertically and equidistantly on the inner side wall of the upper silo 1. The stirring blades 5 are made of corrosion-resistant metal and a square hollow metal reinforcement component is provided in the center to ensure The straight stirring blade 5 will not bend. The upper surface of the silo top cover 2 is a plane, and a reinforcing structure is provided in the middle to support the equipment arranged on the upper surface. The reducer 3 is installed at the center of the silo top cover 2, and the stirring blade 5 is installed under the silo top cover 2. The reducer 3 and the stirring blade 5 are connected by a rotating shaft 4. Feed ports 7 are provided on the top of the silo top cover 2 and on both sides of the reducer 3. The two feed ports 7 have the same diameter and are symmetrically distributed on the silo top cover 2. The distance between the center of the feed port 7 and the center of the silo top cover 2 is half the inner diameter of the upper silo 1. Compared with a single feed port in the center, this method reduces the conical stacking height of the material by half.

[0022] The outer side wall of the loading bin 1 is circular and has a plurality of support ears 10 welded thereon at equal intervals, so that the device can be supported conveniently by the support ears 10 .

[0023] There is a signal connection between the controller and the material level sensor 6. The controller is composed of a programmable controller and related actuators. It is connected to the reducer 3 with a cable and connected to several material level sensors 6 with signal lines. An indicator light corresponding to the material level sensor 6 is provided on the outside of the controller to display the material level status.

[0024] The bottom of the lower bin 8 is integrally formed with a discharge port 9.

[0025] The stirring blade 5 is in the shape of a vertical rectangle, and the position of the stirring blade 5 is offset from the feed inlet 7 to prevent the stirring blade 5 from blocking the material in the feed inlet 7 from falling.

[0026] The upper silo 1 is cylindrical, and the lower silo 8 is inverted conical.

[0027] When this device is in use, when the silo is in an empty state, the stirring blade 5 is in a stopped state, several level sensors 6 are in a detection state, the discharge port 9 is in a closed state, and the material is filled into the silo along the two feed ports 7. When the material accumulates to a certain level sensor 6, the sensor outputs a signal to the controller, and the controller lights up the corresponding indicator light. When the material reaches the level sensor 6 at the conical accumulation point, the controller turns on the reducer 3 to drive the rotating shaft 4 and the stirring blade 5 to rotate, so that the material entering the silo is evenly distributed. When the material reaches the top level sensor 6, the controller turns off the reducer 3, and the silo is full and stops feeding.

Claims

1. Porous granular ammonium nitrate silo, characterized by: The invention comprises a feeding silo (1) and a controller, wherein a silo cover (2) is fixed on the top of the feeding silo (1), a reducer (3) is fixed at the top center of the silo cover (2), a rotating shaft (4) is fixed on the rotating end of the reducer (3) passing through the silo cover (2), a plurality of stirring blades (5) are fixed at equal intervals in a circle center array on the outer surface of the rotating shaft (4), a plurality of material level sensors (6) are fixed vertically and equidistantly on the inner side wall of the feeding silo (1), and a feeding port (7) is provided on the top of the silo cover (2) and on both sides of the reducer (3).

2. The porous granular ammonium nitrate silo according to claim 1, characterized in that: A lower material bin (8) is fixed at the bottom of the upper material bin (1), and a discharge port (9) is fixed at the bottom of the lower material bin (8).

3. The porous granular ammonium nitrate silo according to claim 1, characterized in that: The outer side wall of the loading bin (1) is circular and has a plurality of supporting ears (10) fixed thereon in rows and at equal intervals.

4. The porous granular ammonium nitrate silo according to claim 1, characterized in that: The controller is signal-connected to the material level sensor (6).

5. The porous granular ammonium nitrate silo according to claim 1, characterized in that: The stirring blade (5) is in the shape of a vertical rectangle.

6. The porous granular ammonium nitrate silo according to claim 1, characterized in that: The position of the stirring blade (5) is offset from the feed port (7).

7. The porous granular ammonium nitrate silo according to claim 2, characterized in that: The upper material bin (1) is cylindrical, and the lower material bin (8) is inverted conical.

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