Center stand column of grain silo

Abstract

The utility model discloses a central stand column of a grain silo, which comprises a top column section arranged on the top of the silo, an air duct column section connected with the top column section, a bottom column section arranged on the ground of the bottom of the silo, a free discharging column section connected with the bottom column section, a control discharging column section arranged between the free discharging column section and the air duct column section, and a connecting column section, the air channel column section and the discharging control column sections, the discharging control column sections and the free discharging column sections, and every two adjacent discharging control column sections are connected through connecting column sections, and discharging control ports and discharging doors used for shielding the discharging control ports are evenly distributed on the discharging control column sections in the circumferential direction. Discharging speed increasing devices are arranged on the two sides of each control discharging opening; the discharging acceleration devices on the two sides of the discharging port can control the flow speed of grains at the discharging port in an acceleration mode, the material speed of the lower center stand column can be increased, and therefore the warehousing time is shortened, the energy consumption of the feeding device is reduced, and the warehousing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, and particularly to a central column of a grain silo. Background Art

[0002] A grain silo is the main silo type for modern bulk grain storage. The grain inlet of the grain silo is located at the top of the silo. Due to the high height of the silo, during the process of grain feeding from the top of the silo until the silo is filled, the feeding port of the central column is static and automatically feeds. This feeding method is slow, so the feeding speed of the feeding device needs to be correspondingly reduced, resulting in a longer filling time, increased energy consumption of the feeding device, and low filling efficiency. Content of the Utility Model

[0003] The utility model provides a central column of a grain silo to solve the technical problems that the feeding speed of the central column of the existing grain silo is slow, resulting in a longer filling time, increased energy consumption of the feeding device, and low filling efficiency.

[0004] According to one aspect of the utility model, a central column of a grain silo is provided, which includes a top column section arranged on the top of the silo, an air duct column section connected to the top column section, a bottom column section arranged on the ground at the bottom of the silo, a free discharging column section connected to the bottom column section, a control discharging column section and a connecting column section arranged between the free discharging column section and the air duct column section. The air duct column section is connected to the control discharging column section, the control discharging column section is connected to the free discharging column section, and adjacent two control discharging column sections are connected by the connecting column section. The control discharging column section is circumferentially and uniformly provided with control discharging ports and discharging doors for shielding the control discharging ports. Discharging speed-up devices are arranged on both sides of each control discharging port.

[0005] Further, the discharging speed-up device includes a bracket for connecting the control discharging column section, an air knife arranged on the bracket for blowing air towards the control discharging port, an air pipe joint arranged on the air knife, and an air pipe for connecting the air pipe joint and an external circulating fan.

[0006] Further, the included angle between the air blowing direction of the air knife and the discharging door is 40 - 50°.

[0007] Further, ventilation air ducts are arranged on the outer side walls of the bottom column section, the free discharging column section, the control discharging column section and the connecting column section and are mutually communicated. The ventilation air ducts are communicated with the air duct column section, and the discharging speed-up devices are arranged in the ventilation air ducts.

[0008] Further, a linear driving mechanism for driving the discharging door to move axially is arranged on the control discharging column section, and the discharging door is slidably connected to the control discharging port.

[0009] Furthermore, the top column section includes a positioning cylindrical tube, a top flange disposed on the positioning cylindrical tube for connecting to the silo top, and inclined support rods disposed circumferentially and uniformly on the positioning cylindrical tube for connecting to the silo top. An opening window for overflow discharging is provided on the positioning cylindrical tube, and the opening window is disposed between two adjacent inclined support rods.

[0010] Furthermore, the inner cylindrical wall of the air duct column section is sleeved on the positioning cylindrical tube and can move axially relative to it. An air duct external flange for connecting to an external circulation fan is disposed on the outer cylindrical wall of the air duct column section. An air duct interface for connecting to the ventilation air duct is provided on the annular bottom surface of the air duct column section, and an adapter flange for connecting to the connection column section is disposed on the annular bottom surface.

[0011] Furthermore, free discharging openings are disposed circumferentially and uniformly on the free discharging column section. An umbrella-shaped distributor is disposed inside the free discharging column section. Feeding openings corresponding one-to-one to the free discharging openings are disposed on the umbrella-shaped distributor, and the width of the feeding openings is the same as that of the free discharging openings.

[0012] Furthermore, the discharging angle of the feeding openings is less than or equal to 45°.

[0013] Furthermore, the height of the umbrella-shaped distributor is 1 / 2 of the height of the free discharging column section.

[0014] The utility model has the following beneficial effects:

[0015] For the central column of the grain silo of the utility model, the top column section is installed on the silo top of the grain silo, and the bottom column section is installed on the ground of the grain silo. An air duct column section, a controlled discharging column section and a free discharging column section are disposed between the top column section and the bottom column section. During use, grains enter the interior of the central column from the grain inlet on the silo top, and are first discharged from the free discharging column section. Each section of the controlled discharging column section discharges in segments from bottom to top. By controlling the size of the discharging opening blocked by the controlled discharging door, it is ensured that the central column always maintains the set height range of the material, preventing the material from colliding and breaking at high altitude; the discharging speed-up devices on both sides of the controlled discharging opening can accelerate the flow rate of the grains at the controlled discharging opening, improve the discharging speed of the lower central column, thereby shortening the loading time of the silo, reducing the energy consumption of the feeding device, and improving the loading efficiency.

[0016] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and shall not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural view of the central column of the grain silo according to a preferred embodiment of the present utility model;

[0019] Figure 2 is a sectional view of the central column of the grain silo according to a preferred embodiment of the present utility model;

[0020] Figure 3 is a schematic structural view of the top column section according to a preferred embodiment of the present utility model;

[0021] Figure 4 is a schematic structural view of the air duct column section according to a preferred embodiment of the present utility model;

[0022] Figure 5 is a schematic structural view of the free discharge column section according to a preferred embodiment of the present utility model;

[0023] Figure 6 is a top view of the free discharge column section according to a preferred embodiment of the present utility model;

[0024] Figure 7 is a schematic structural view of the umbrella-shaped distributor according to a preferred embodiment of the present utility model;

[0025] Figure 8 is a schematic structural view of the control discharge column section according to a preferred embodiment of the present utility model;

[0026] Figure 9 is a top view of the control discharge column section according to a preferred embodiment of the present utility model;

[0027] Figure 10 is Figure 9 an enlarged schematic view of the area A shown;

[0028] Figure 11 is a schematic structural view of the discharge speed-up device according to a preferred embodiment of the present utility model.

[0029] Legend:

[0030] 1. Top column section; 11. Positioning cylindrical tube; 12. Top flange; 13. Inclined support rod; 14. Window opening; 2. Air duct column section; 21. Inner cylinder wall; 22. Outer cylinder wall; 221. Air duct external connection flange; 23. Annular bottom surface; 231. Air duct interface; 232. Connecting flange; 3. Bottom column section; 4. Free discharging column section; 41. Free discharging port; 42. Umbrella-shaped material distributor; 421. Material discharging port; 5. Control discharging column section; 51. Discharging door; 52. Discharging speed-up device; 521. Bracket; 522. Air knife; 523. Air pipe joint; 53. Control discharging port; 54. Linear driving mechanism; 6. Connecting column section; 7. Ventilation air duct. Detailed implementation mode

[0031] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0032] Please refer to Figures 1 to 11 , the central column of the grain silo in this embodiment includes a top column section 1 arranged on the silo top, an air duct column section 2 connected to the top column section 1, a bottom column section 3 arranged on the ground of the silo bottom, a free discharging column section 4 connected to the bottom column section 3, a control discharging column section 5 and a connecting column section 6 arranged between the free discharging column section 4 and the air duct column section 2. The air duct column section 2 and the control discharging column section 5, the control discharging column section 5 and the free discharging column section 4, and between adjacent two control discharging column sections 5 are connected by the connecting column section 6. The control discharging column section 5 is circumferentially and evenly provided with control discharging ports 53 and discharging doors 51 for blocking the control discharging ports 53. Discharging speed-up devices 52 are arranged on both sides of each control discharging port 53.

[0033] For the central column of the grain silo in this embodiment, the top column section 1 is installed on the silo top of the grain silo, the bottom column section 3 is installed on the ground of the grain silo. The air duct column section 2, the control discharging column section 5 and the free discharging column section 4 are arranged between the top column section 1 and the bottom column section 3. During use, the grain enters the inside of the central column from the grain inlet on the silo top, first discharges from the free discharging column section 4, and each section of the control discharging column section 5 discharges in segments from bottom to top. By controlling the size of the control discharging port 53 blocked by the discharging door 51, it is ensured that the central column always maintains the set height range of the material, preventing the material from colliding and breaking at high altitude; the discharging speed-up devices 52 on both sides of the control discharging port 53 can accelerate the flow rate of the grain at the control discharging port 53, improve the discharging speed of the lower central column, thereby shortening the silo filling time, reducing the energy consumption of the feeding device, and improving the silo filling efficiency.

[0034] Such as Figure 9 , Figure 10 and Figure 11As shown in the figure, in this embodiment, the discharging speed-up device 52 includes a bracket 521 for connecting and controlling the discharging column section 5, an air knife 522 disposed on the bracket 521 for blowing air towards the control discharging port 53, an air pipe joint 523 disposed on the air knife 522, and an air pipe for connecting the air pipe joint 523 with an external circulating fan; the air knife 522 can ensure that the air flow blows in a specified direction, and the air is blown through two air knives 522 at a preset angle, so as to accelerate the flow rate of the grain at the control discharging port 53, which can not only improve the discharging speed of the central column, but also avoid damaging the grain.

[0035] As Figure 10 shown in the figure, in this embodiment, the included angle θ between the air blowing direction of the air knife 522 and the discharging door 51 is 40 - 50°.

[0036] As Figure 1 、 Figure 2 and Figure 9 shown in the figure, in this embodiment, ventilation air ducts 7 are arranged on the outer side walls of the bottom column section 3, the free discharging column section 4, the control discharging column section 5 and the connecting column section 6, and the ventilation air ducts 7 are communicated with the air duct column section 2. The discharging speed-up device 52 is arranged in the ventilation air ducts 7. The ventilation air ducts 7 can not only realize the air circulation flow in the grain silo to avoid grain heating and mildew, but also protect the discharging speed-up device 52 from being squeezed by the grain. In addition, it can also be used as a limiting structure to prevent the cloth feeder from rotating and can improve the overall rigidity of the central column.

[0037] As Figure 1 、 Figure 2 and Figure 8 shown in the figure, in this embodiment, a linear driving mechanism 54 for driving the discharging door 51 to move axially is arranged on the control discharging column section 5, and the discharging door 51 is slidably connected with the control discharging port 53; the linear driving mechanism 54 has a simple structure and can accurately control the size of the control discharging port 53 blocked by the discharging door 51. Optionally, the linear driving mechanism 54 is a cylinder, which can reduce the pollution caused by oil stains and keep the grain clean compared with a hydraulic oil cylinder and a gear and rack mechanism driven by a motor.

[0038] As Figure 3 shown in the figure, in this embodiment, the top column section 1 includes a positioning cylindrical pipe 11, a top flange 12 disposed on the positioning cylindrical pipe 11 for connecting the silo top, and inclined support rods 13 uniformly arranged along the circumferential direction on the positioning cylindrical pipe 11 for connecting the silo top. An opening window 14 for overflow discharging is opened on the positioning cylindrical pipe 11, and the opening window 14 is disposed between two adjacent inclined support rods 13; the top column section 1 is rigidly connected with the silo top through eight inclined support rods 13 and the top flange 12; when the discharging speed of the central column is less than the feeding speed, the material naturally overflows and discharges through the opening window 14 to prevent the material from blocking the equipment in the previous process.

[0039] As shown Figure 4 In this embodiment, the inner cylindrical wall 21 of the air duct column section 2 is sleeved on the positioning cylindrical pipe 11 and can move axially relative to it. An air duct external flange 221 for connecting an external circulation fan is arranged on the outer cylindrical wall 22 of the air duct column section 2. An air duct interface 231 for connecting a ventilation air duct 7 is opened on the annular bottom surface 23 of the air duct column section 2, and a connection flange 232 for connecting an adapter column section 6 is arranged on the annular bottom surface 23. The air duct column section 2 is an integrated structure of an air duct and a material passage. Four air duct interfaces 231 are arranged on the annular bottom surface 23. The inner cylindrical wall 21 of the air duct column section 2 is sleeved on the positioning cylindrical pipe 11 to prevent the central column from swinging radially. The inner cylindrical wall 21 of the air duct column section 2 and the positioning cylindrical pipe 11 can move axially relative to each other, which can prevent the damage of the silo top caused by the thermal expansion and contraction of the central column. The air duct external flange 221 is connected to the air duct network of the external circulation fan, which can realize the air circulation flow in the grain silo and avoid the heating and mildew of the grain.

[0040] As shown Figure 5 , Figure 6 and Figure 7 In this embodiment, free discharge openings 41 are evenly arranged circumferentially on the free discharge column section 4. An umbrella-shaped distributor 42 is arranged inside the free discharge column section 4. Feeding openings 421 corresponding to the free discharge openings 41 one by one are arranged on the umbrella-shaped distributor 42. The width of the feeding opening 421 is the same as that of the free discharge opening 41. The umbrella-shaped distributor 42 can freely empty the grain at the bottom of the central column from the free discharge openings 41. Its structure is simple and does not require additional energy supply, thus avoiding the accumulation of grain at the bottom column section 3, which can not only improve the loading speed of the silo but also prevent the accumulated material from deteriorating.

[0041] As shown Figure 7 In this embodiment, the chute angle α of the feeding opening 421 satisfies 15° ≤ α ≤ 45°. When α > 45°, on the one hand, the grain is likely to be broken when it falls on the feeding opening 421 of the umbrella-shaped distributor 42, which will increase the breakage rate of the grain. When α < 15°, the horizontal speed of the grain sliding down from the feeding opening 421 is small, which will reduce the storage speed.

[0042] As shown Figure 5 and Figure 7 In this embodiment, the height h of the umbrella-shaped distributor 42 is 1 / 2 of the height H of the free discharge column section 4.

[0043] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A central column of a grain silo, characterized in that: The invention comprises a top column section (1) arranged on the top of the silo, an air duct column section (2) connected to the top column section (1), a bottom column section (3) arranged on the bottom of the silo, a free discharge column section (4) connected to the bottom column section (3), a controlled discharge column section (5) and a connecting column section (6) arranged between the free discharge column section (4) and the air duct column section (2); the air duct column section (2) and the controlled discharge column section (5), the controlled discharge column section (5) and the free discharge column section (4), and two adjacent controlled discharge column sections (5) are connected via the connecting column section (6); controlled discharge ports (53) and discharge doors (51) for shielding the controlled discharge ports (53) are evenly arranged on the controlled discharge column section (5) along the circumferential direction; and discharge speed-up devices (52) are arranged on both sides of each controlled discharge port (53).

2. The central column of the grain silo according to claim 1, characterized in that: The discharge speed-up device (52) comprises a bracket (521) for connecting the discharge control column section (5), a wind knife (522) arranged on the bracket (521) for supplying air toward the discharge control port (53), an air pipe joint (523) arranged on the air knife (522), and an air pipe for connecting the air pipe joint (523) with an external circulation fan.

3. The central column of the grain silo according to claim 2, characterized in that: The angle between the air supply direction of the wind knife (522) and the discharge door (51) is 40-50°.

4. The central column of the grain silo according to any one of claims 1 to 3, characterized in that: The outer side walls of the bottom column section (3), the free discharge column section (4), the controlled discharge column section (5) and the connecting column section (6) are provided with mutually connected ventilation ducts (7), the ventilation duct (7) is connected with the duct column section (2), and the discharge speed-up device (52) is arranged in the ventilation duct (7).

5. The central column of the grain silo according to claim 4, characterized in that: The controlled discharge column section (5) is provided with a linear drive mechanism (54) for driving the discharge door (51) to move axially, and the discharge door (51) is slidably connected to the controlled discharge port (53).

6. The central column of the grain silo according to claim 5, characterized in that: The top column section (1) comprises a positioning cylindrical tube (11), a top flange (12) arranged on the positioning cylindrical tube (11) for connecting to a silo top, and oblique support rods (13) evenly arranged along the circumference on the positioning cylindrical tube (11) for connecting to a silo top, the positioning cylindrical tube (11) being provided with a window (14) for overflow discharge, the window (14) being arranged between two adjacent oblique support rods (13).

7. The central column of the grain silo according to claim 6, characterized in that: The inner cylinder wall (21) of the air duct column section (2) is sleeved on the positioning cylindrical tube (11) and can move relatively in the axial direction; the outer cylinder wall (22) of the air duct column section (2) is provided with an air duct external flange (221) for connecting to an external circulation fan; the annular bottom surface (23) of the air duct column section (2) is provided with an air duct interface (231) for connecting to the ventilation air duct (7); the annular bottom surface (23) is provided with a connecting flange (232) for connecting to the connecting column section (6).

8. The central column of the grain silo according to claim 1, characterized in that: The free discharge column section (4) is provided with free discharge ports (41) evenly distributed along the circumferential direction, an umbrella-shaped distributor (42) is provided inside the free discharge column section (4), and the umbrella-shaped distributor (42) is provided with discharge ports (421) corresponding to the free discharge ports (41) one by one, and the width of the discharge ports (421) is consistent with the width of the free discharge port (41).

9. The central column of the grain silo according to claim 8, characterized in that: The material slip angle of the material discharge port (421) is less than or equal to 45°.

10. The central column of the grain silo according to claim 8, characterized in that: The height of the umbrella-shaped distributor (42) is 1 / 2 of the height of the free discharge column section (4).

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