Annular device for increasing wind load of steel silo

Abstract

The annular device for increasing the wind load of the steel silo comprises a granary and supporting columns, the supporting columns are welded to the lower end of the granary, the number of the supporting columns is four, and the supporting columns are symmetrically arranged at the lower end of the outer side of the granary at equal intervals, so that the granary can be stably supported on the ground, and a silo cover is hinged to the upper end of the granary through a hinge. The inner end and the outer end of the granary are connected with ventilation mechanisms, and the outer ends of the ventilation mechanisms are connected with dust removal mechanisms. According to the annular device for increasing the wind load of the steel silo, when grains are stored in the granary, the first centrifugal fan and the second centrifugal fan are started, air at the outer end enters the connecting pipe, is filtered by the filter element and then is input into the annular pipe through the first centrifugal fan and the second centrifugal fan, and meanwhile air flow is exhausted from the exhaust holes in the outer end of the annular pipe; and the grains flow upwards from bottom to top and then are exhausted from the exhaust pipe at the upper end, so that the grains in the granary are ventilated.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain storage, in particular to an annular device for increasing the wind load of a steel silo. Background Technique

[0002] As a major grain-producing country, grain reserve in China has always been a major issue concerning people's livelihood. During the high-temperature seasons of summer and autumn, the continuous high temperature easily causes the grain temperature in the granary to be too high, and the temperature difference between the inside and outside of the granary is large. Under the action of the temperature difference, moisture moves along the direction of the heat flow, forming a phenomenon of wet and heat diffusion, which makes the grain grow insects and deteriorate; in winter, the temperature gradually drops, the grain temperature does not drop for a long time or the drop rate is small, which is easy to cause the grain to heat up. And because of the existence of some gaps in the granary, the outside humid air enters the granary and is easy to cause the grain to mildew.

[0003] In the related technology, through retrieval, it is found that the solution of the dehumidifying and air-leading type grain steel silo (publication number CN221283842U) provides a dehumidifying and air-leading type grain steel silo with simple structure, easy implementation, low cost and good effect. It changes the drawback that only the bottom air inlet in the past caused uneven ventilation in the silo. It combines the bottom air inlet and the top air extraction to accelerate the air flow in the grain pile, forming active ventilation, which is beneficial to discharging the air in the silo; multiple air-leading pipes connected to axial flow fans and ventilation pipes connected to centrifugal fans are arranged in the silo, and they extend into the grain pile, making the ventilation in the silo more uniform, and will not affect ventilation due to too dense grain accumulation, and can obtain good dehumidification effect; a heat-insulating layer is arranged on the outer side of the silo body, which is beneficial to isolating the external environment and keeping a constant temperature in the silo, avoiding the deterioration of grain caused by too high or too low temperature. However, there is dust in the air flow drawn into the granary by the centrifugal fan, and long-term ventilation will cause a large amount of dust to adhere to the outside of the grain, which may cause the grain in the granary to rot. Summary of the Invention

[0004] The purpose of the utility model is to provide an annular device for increasing the wind load of a steel silo to solve the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an annular device for increasing the wind load of a steel silo, including a granary and support columns, the support columns are welded to the lower end of the granary, the upper end of the granary is hinged with a silo cover through a hinge, both the inner and outer ends of the granary are connected with a ventilation mechanism, and the outer end of the ventilation mechanism is connected with a dust removal mechanism.

[0006] The dust removal mechanism includes an air inlet pipe, a connecting ring, a connecting pipe, a first filter plate, a heating wire, a second filter screen and a filter element. The air inlet pipe is connected to the outer end of the ventilation mechanism, the connecting ring is welded to the outside of the air inlet pipe, the connecting pipe is connected to the rear end of the air inlet pipe, the first filter plate is fixedly connected to the inside of the air inlet pipe, the heating wire is fixedly connected to the rear side of the first filter plate, the second filter screen is fixedly connected to the inside of the connecting pipe, and the filter element is connected to the outer end of the heating wire.

[0007] Preferably, the connecting ring is welded to the rear end of the intake pipe, and an internal thread is provided on the inner side of the part where the connecting ring protrudes from the rear end of the intake pipe. An external thread is provided on the outer side of the front end of the connecting pipe. The inner rear end of the connecting ring is threadedly connected to the outer side of the front end of the connecting pipe. The outer side of the filter element is slidably connected to the inner sides of the intake pipe and the connecting pipe. The adjacent sides of the first filter plate and the second filter screen are in contact with the front and rear sides of the filter element. Filter holes are provided in the first filter plate and the second filter screen. Thus, after the filter element is slid to the inner rear end of the intake pipe, the connecting pipe is threadedly connected to the inner side of the connecting ring at the rear end of the intake pipe, so that after the first filter plate and the second filter screen move to the front and rear ends of the filter element, the filter element can be fixed between the intake pipe and the connecting pipe to remove dust from the air flow entering the connecting pipe and the intake pipe.

[0008] Preferably, the filter element is a cotton filter element, and the middle part inside the filter element is slidably connected to the outer side of the heating wire. Thus, when the air flow enters the connecting pipe and the intake pipe and passes through the filter element, the filter element will absorb the water vapor contained in the air flow, preventing too much water vapor from entering the granary and causing the grain to become too wet and damaged. And by starting the heating wire, the filter element can be heated. Thus, after the dust removal mechanism is used for a long time, by starting the heating wire, the filter element can be heated. At this time, the water in the filter element evaporates into water vapor and is discharged through the filter holes in the second filter screen, ensuring the water absorption effect of the filter element.

[0009] Preferably, a refrigeration pipe is installed at the outer end of the intake pipe. Thus, when the temperature of the grain in the granary is too high, high-pressure gas is introduced into the refrigeration pipe, so that the end of the refrigeration pipe connected to the intake pipe discharges cold air, which is mixed with the air flow entering the intake pipe and then enters the granary, playing a role in cooling the grain in the granary.

[0010] Preferably, the ventilation mechanism includes a first centrifugal fan, a second centrifugal fan, an annular pipe and an exhaust pipe. The first centrifugal fan is fixedly connected to the outer end of the granary, the second centrifugal fan is fixedly connected to the outer end of the granary, the annular pipe is installed at the outer ends of the air outlet pipes of the first centrifugal fan and the second centrifugal fan, and the exhaust pipe is fixedly connected to the upper inner end of the warehouse cover.

[0011] Preferably, the first centrifugal fan and the second centrifugal fan are symmetrically fixed to the lower part of the rear side of the granary. The air intake ends at the rear of the first centrifugal fan and the second centrifugal fan are both fixedly connected to the intake pipe. Exhaust holes are provided at the outer end of the annular pipe, and intake holes are provided at the outer end of the exhaust pipe. Thus, starting the first centrifugal fan and the second centrifugal fan can make two air flows enter the annular pipe from both ends of the annular pipe and collide in the annular pipe, thereby increasing the wind load inside the annular pipe and making the air flow discharged from the exhaust holes stronger. The discharged air flow passes through the grain in the granary from bottom to top and then is discharged from the exhaust pipe at the upper end.

[0012] Preferably, the apertures of the exhaust holes at the outer ends of the annular pipes and the intake holes at the outer ends of the exhaust pipes are both smaller than the particle size of the grains, so that the grains in the granary will not enter the exhaust holes and intake holes to cause blockage.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0014] The annular device for increasing the wind load of the steel silo can remove dust from the air flow entering the connecting pipe and the intake pipe through the dust removal mechanism arranged at the outer ends of the first centrifugal fan and the second centrifugal fan, and the filter element will absorb the water vapor in the air flow, so that the air flow entering the granary remains dry and dust-free, protecting the grains in the granary.

[0015] The annular device for increasing the wind load of the steel silo can make two air flows enter the annular pipe from both ends of the annular pipe by starting the first centrifugal fan and the second centrifugal fan, and collide in the annular pipe, thereby increasing the wind load inside the annular pipe, making the air flow discharged from the exhaust hole stronger. The discharged air flow passes through the grains in the granary from bottom to top and then is discharged from the exhaust pipe at the upper end, keeping the inside of the granary ventilated and preventing the temperature of the grains therein from being too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the granary of the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure at the annular pipe of the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure at the dust removal mechanism of the present utility model.

[0021] Description of the reference numerals:

[0022] In the figure:

[0023] 1. Grain bin; 2. Support column; 3. Bin cover; 401. First centrifugal fan; 402. Second centrifugal fan; 403. Annular pipe; 404. Exhaust pipe; 501. Air inlet pipe; 502. Connecting ring; 503. Connecting pipe; 504. First filter plate; 505. Electric heating wire; 506. Second filter screen; 507. Filter element; 6. Refrigeration pipe. Detailed implementation mode

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0025] Unless otherwise defined, the up, down, left, right, front, back, inner and outer directions involved in this article are based on the up, down, left, right, front, back, inner and outer directions in the figures shown in the present invention, and are hereby explained together.

[0026] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., according to actual needs.

[0027] To solve the problem that there is dust in the air flow pumped into the grain bin by the centrifugal fan, and long-term ventilation will cause a large amount of dust to adhere to the outside of the grain, which may cause the grain in the grain bin to rot, please refer to Figures 1 to 4 As shown, an annular device for increasing the wind load of a steel silo. In this embodiment, it includes a grain bin 1 and support columns 2. The support columns 2 are welded to the lower end of the grain bin 1. The number of support columns 2 is four, and they are symmetrically arranged at equal distances on the outer lower end of the grain bin 1, so that the grain bin 1 can be stably supported above the ground. The upper end of the grain bin 1 is hinged with a bin cover 3 through a hinge. The inner and outer ends of the grain bin 1 are connected with a ventilation mechanism, and the outer end of the ventilation mechanism is connected with a dust removal mechanism.

[0028] The dust removal mechanism includes an air inlet pipe 501, a connecting ring 502, a connecting pipe 503, a first filter plate 504, an electric heating wire 505, a second filter screen 506 and a filter element 507. The air inlet pipe 501 is connected to the outer end of the ventilation mechanism. The connecting ring 502 is welded to the outside of the air inlet pipe 501. The connecting pipe 503 is connected to the rear end of the air inlet pipe 501. The first filter plate 504 is fixedly connected to the inside of the air inlet pipe 501. The electric heating wire 505 is fixedly connected to the rear side of the first filter plate 504. The second filter screen 506 is fixedly connected to the inside of the connecting pipe 503. The filter element 507 is connected to the outer end of the electric heating wire 505.

[0029] The connecting ring 502 is welded to the rear end of the intake pipe 501. An internal thread is provided on the inner side of the part of the connecting ring 502 protruding from the rear end of the intake pipe 501, and an external thread is provided on the outer side of the front end of the connecting pipe 503. The inner rear end of the connecting ring 502 is threadedly connected to the outer side of the front end of the connecting pipe 503. Thus, after removing the connecting pipe 503 from the rear end of the connecting ring 502 by rotating the connecting pipe 503, the filter element 507 therein can be taken out, so as to facilitate replacement after the filter element 507 has been used for a long time. The outer side of the filter element 507 is slidably connected to the inner sides of the intake pipe 501 and the connecting pipe 503. The adjacent sides of the first filter plate 504 and the second filter screen 506 abut against the front and rear sides of the filter element 507. Filter holes are provided in the first filter plate 504 and the second filter screen 506. Thus, after the filter element 507 is slid to the inner rear end of the intake pipe 501, and then the connecting pipe 503 is threadedly connected to the inner side of the connecting ring 502 at the rear end of the intake pipe 501, so that after the first filter plate 504 and the second filter screen 506 move to the front and rear ends of the filter element 507, the filter element 507 can be fixed between the intake pipe 501 and the connecting pipe 503 to remove dust from the air flow entering the connecting pipe 503 and the intake pipe 501.

[0030] The filter element 507 is a cotton filter element 507, and the middle part inside the filter element 507 is slidably connected to the outer side of the heating wire 505. Thus, when the air flow enters the connecting pipe 503 and the intake pipe 501 and passes through the filter element 507, the filter element 507 will absorb the water vapor contained in the air flow, preventing too much water vapor from entering the granary 1 and causing the grain to become too wet and damaged. And by starting the heating wire 505, the filter element 507 can be heated. Thus, after the dust removal mechanism has been used for a long time, by starting the heating wire 505, the filter element 507 can be heated. At this time, the water in the filter element 507 evaporates into water vapor and is discharged through the filter holes in the second filter screen 506, ensuring the water absorption effect of the filter element 507.

[0031] A refrigeration pipe 6 is installed at the outer end of the intake pipe 501. The refrigeration pipe 6 is also called a vortex tube. It is to let the gas that has been compressed and cooled to room temperature enter the nozzle, expand and accelerate to the speed of sound in the nozzle, and shoot into the vortex chamber from the tangential direction to form a free vortex. The rotational angular velocity of the free vortex is greater and greater as it gets closer to the center. Due to different angular velocities, friction is generated between the layers of the free vortex. The angular velocity of the air flow in the central part is the largest. As a result of the friction, energy is transferred to the air flow with a lower angular velocity in the outer layer. The air flow in the central layer loses energy, has a low kinetic energy, a reduced speed, and a reduced temperature, and is led out from one end through the orifice plate in the center of the vortex tube to obtain the cold air flow required for refrigeration. Thus, when the temperature of the grain in the granary 1 is too high, high-pressure gas is introduced into the refrigeration pipe 6, so that the cold air is discharged from the end of the refrigeration pipe 6 connected to the intake pipe 501 and mixed with the air flow entering the intake pipe 501 and then enters the granary 1, which can play a role in cooling the grain in the granary 1.

[0032] The ventilation mechanism includes a first centrifugal fan 401, a second centrifugal fan 402, an annular pipe 403 and an exhaust pipe 404. The first centrifugal fan 401 is fixedly connected to the outer end of the grain bin 1, and the second centrifugal fan 402 is fixedly connected to the outer end of the grain bin 1. The annular pipe 403 is installed at the outer end of the air outlet pipes of the first centrifugal fan 401 and the second centrifugal fan 402. The air outlet pipes of the first centrifugal fan 401 and the second centrifugal fan 402 and both ends of the annular pipe 403 are connected by flanges, so that the annular pipe 403 can be disassembled for maintenance and replacement when it is damaged.

[0033] The exhaust pipe 404 is fixedly connected to the upper inner end of the bin cover 3. The first centrifugal fan 401 and the second centrifugal fan 402 are symmetrically fixed to the lower rear side of the outside of the grain bin 1. The air inlet ends at the rear ends of the first centrifugal fan 401 and the second centrifugal fan 402 are both fixedly connected with air inlet pipes 501. The outer end of the annular pipe 403 is provided with exhaust holes, and the outer end of the exhaust pipe 404 is provided with air inlet holes. Thus, starting the first centrifugal fan 401 and the second centrifugal fan 402 can make two airflows enter the annular pipe 403 from both ends of the annular pipe 403 and collide in the annular pipe 403, thereby increasing the wind load inside the annular pipe 403 and making the airflows discharged from the exhaust holes stronger. The discharged airflows pass through the grains in the grain bin 1 from bottom to top and then are discharged from the upper exhaust pipe 404.

[0034] The apertures of the exhaust holes at the outer end of the annular pipe 403 and the air inlet holes at the outer end of the exhaust pipe 404 are both smaller than the particle size of the grains. Thus, the grains in the grain bin 1 will not enter the exhaust holes and air inlet holes to cause blockage.

[0035] The first centrifugal fan 401, the second centrifugal fan 402 and the refrigeration pipe 6 are all conventional instruments, and their working principles, dimensions and models are irrelevant to the problems solved by this application, so no more description will be made. The control mode of this utility model is controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of power also belongs to the common knowledge in this field, and this utility model mainly protects mechanical devices, so the control mode and circuit connection of this utility model will not be explained in detail.

[0036] Working principle: For this annular device for increasing the wind load of the steel silo, when storing grains in the grain bin 1, start the first centrifugal fan 401 and the second centrifugal fan 402. The air outside enters the connecting pipe 503 and is filtered by the filter element 507, and then is input into the annular pipe 403 through the first centrifugal fan 401 and the second centrifugal fan 402. At the same time, the airflows are discharged from the exhaust holes at the outer end of the annular pipe 403, and flow upward through the grains from bottom to top, and then are discharged from the upper exhaust pipe 404 to ventilate the grains in the grain bin 1.

[0037] It should be noted that in this text, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An annular device for increasing the wind load of a steel silo, comprising a silo (1) and a support column (2), wherein the support column (2) is welded to the lower end of the silo (1), and characterized in that: The upper end of the granary (1) is hingedly connected to a granary cover (3), the inner and outer ends of the granary (1) are connected to a ventilation mechanism, and the outer end of the ventilation mechanism is connected to a dust removal mechanism: The dust removal mechanism comprises an air intake pipe (501), a connecting ring (502), a connecting pipe (503), a first filter plate (504), an electric heating wire (505), a second filter screen (506) and a filter element (507); the air intake pipe (501) is connected to the outer end of the ventilation mechanism; the connecting ring (502) is welded to the outer side of the air intake pipe (501); the connecting pipe (503) is connected to the rear end of the air intake pipe (501); the first filter plate (504) is fixedly connected to the inner side of the air intake pipe (501); the electric heating wire (505) is fixedly connected to the rear side of the first filter plate (504); the second filter screen (506) is fixedly connected to the inner side of the connecting pipe (503); and the filter element (507) is connected to the outer end of the electric heating wire (505).

2. The annular device for increasing the wind load of a steel silo according to claim 1, characterized in that: The connecting ring (502) is welded to the rear end of the air intake pipe (501), and an inner side of a portion of the connecting ring (502) protruding from the rear end of the air intake pipe (501) is provided with an internal thread, and an outer side of the front end of the connecting pipe (503) is provided with an external thread, and the inner rear end of the connecting ring (502) is threadedly connected to the outer side of the front end of the connecting pipe (503), and the outer side of the filter element (507) is slidably connected to the inner sides of the air intake pipe (501) and the connecting pipe (503), and a side adjacent to the first filter plate (504) and the second filter screen (506) is in contact with the front and rear sides of the filter element (507), and filter holes are provided in the first filter plate (504) and the second filter screen (506).

3. The annular device for increasing the wind load of a steel silo according to claim 1, characterized in that: The filter element (507) is a cotton filter element (507), and the middle of the interior of the filter element (507) is slidably connected to the outer side of the electric heating wire (505).

4. The annular device for increasing the wind load of a steel silo according to claim 1, characterized in that: A refrigeration pipe (6) is installed at the outer end of the air inlet pipe (501).

5. The annular device for increasing the wind load of a steel silo according to claim 1, characterized in that: The ventilation mechanism comprises a first centrifugal fan (401), a second centrifugal fan (402), an annular pipe (403) and an exhaust pipe (404); the first centrifugal fan (401) is fixedly connected to the outer end of the granary (1); the second centrifugal fan (402) is fixedly connected to the outer end of the granary (1); the annular pipe (403) is installed on the outer ends of the air outlet pipes of the first centrifugal fan (401) and the second centrifugal fan (402); and the exhaust pipe (404) is fixedly connected to the inner upper end of the granary cover (3).

6. The annular device for increasing the wind load of a steel silo according to claim 5, characterized in that: The first centrifugal fan (401) and the second centrifugal fan (402) are symmetrically fixed to the lower side of the outer rear end of the granary (1); an air intake pipe (501) is fixed to the air intake ends at the rear ends of the first centrifugal fan (401) and the second centrifugal fan (402); an exhaust hole is provided at the outer end of the annular tube (403); and an air intake hole is provided at the outer end of the exhaust pipe (404).

7. The annular device for increasing the wind load of a steel silo according to claim 5, characterized in that: The diameters of the exhaust hole at the outer end of the annular tube (403) and the air inlet hole at the outer end of the exhaust pipe (404) are both smaller than the grain size.

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