Grain storage ventilation system for bungalow

Abstract

The utility model discloses a bungalow warehouse grain storage ventilation system which comprises a wall body, a ventilation hole penetrating through the wall body is formed in the wall body, an axial flow fan is arranged in the ventilation hole, and a heat preservation sealing door is installed on the ventilation hole located on the outer side of the axial flow fan. An air distribution box communicated with the ventilation hole is installed on the inner side of the ventilation hole, the side, away from the ventilation hole, of the air distribution box is connected with a main air channel and a branch air channel, the main air channel and the branch air channel are communicated with at least one overground cage, and the upper end of the air distribution box is further connected with an air adjusting circulation pipe communicated with the outside of the bin. The overground cage ventilation system has the advantages that ventilation, cooling and moisture dissipation are achieved, heat of grain piles is removed, the temperature difference of the grain piles is reduced, moisture transfer, layering or moisture condensation is prevented or eliminated, and the overground cage can bear high grain pile pressure of more than 7 meters due to the fact that the inside and the outside of the overground cage are subjected to anti-corrosion treatment; and meanwhile, a controlled atmosphere circulation pipe of a ventilation system is combined for circulation controlled atmosphere insect killing, and safe grain storage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, and particularly relates to a ventilation system for storing grain in a flat warehouse. Background Art

[0002] Since ancient times, China has been a major grain-producing country, ranking first in the world in annual output. The produced grain needs to be properly stored to ensure its quality and safety, and at the same time, its storage period can be effectively extended. With the application of intelligence and mechanization in the post-harvest of grain, not only has the reduction of food and loss been achieved in the grain drying link, but also the functions of China's grain storage facilities have been continuously improved.

[0003] The flat warehouse is the earliest built and has the largest total capacity in China. Its plane is rectangular, and most of them are single-story warehouse buildings with brick-concrete structures, suitable for storing bulk and packaged grains. During the storage process of the grains in the warehouse, respiration will occur. When the grains respire, if there is sufficient oxygen in the environment, it will be beneficial to the normal respiration of the grains, thereby helping to reduce the moisture and temperature of the grains; the continuous high temperature in summer and autumn is likely to cause 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 heat flow direction, forming a phenomenon of wet and heat diffusion, which makes the grains 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 likely to cause the grains to heat up. And because of the existence of some gaps in the granary, the entry of humid air from the outside into the granary is likely to cause the grains to mold.

[0004] In order to ensure the quality and safety of grains, the warehouse for storing grains needs to be provided with ventilation holes or ventilation ducts for timely ventilation and airtight operation. Doing so can not only promote the normal respiration of grains, but also help to regulate the temperature and humidity in the warehouse, thereby prolonging the storage period of grains. Therefore, a ventilation system for storing grain in a flat warehouse is proposed to provide a reliable guarantee for safe grain storage. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a ventilation system for storing grain in a flat warehouse that can extend the storage period of grains.

[0006] The technical solution is as follows: A ventilation system for storing grain in a bungalow warehouse includes a wall. The key lies in that a ventilation opening penetrating the wall is provided on the wall, an axial flow fan is arranged in the ventilation opening, a heat preservation and sealing door is installed at the ventilation opening outside the axial flow fan, an air distribution box communicating with the ventilation opening is installed inside the ventilation opening, a main air duct and a branch air duct are respectively connected to one side of the air distribution box away from the ventilation opening, the main air duct and the branch air duct are both connected to at least one or more above-ground cages, and an air conditioning and circulation pipe communicating with the outside of the warehouse is further connected to the upper end of the air distribution box. With the above structure, setting the ventilation opening on the wall saves space. The main air duct and the branch air duct communicating with the air distribution box inside the wall can cooperate with the axial flow fan to realize the air flow in the bungalow warehouse, and an air conditioning and circulation pipe is arranged on the air distribution box to lead to the outside of the warehouse for nitrogen regulation.

[0007] Preferably: An air inlet connecting piece is arranged on the axial flow fan. The connecting piece is connected to the axial flow fan by bolts, and the connecting piece is tightly connected to the ventilation opening by a handwheel. With the above structure, the tight connection between the axial flow fan and the ventilation opening can be ensured, and air leakage can be avoided.

[0008] Preferably: Ventilation opening steel plates are pre-buried around the ventilation opening, and a steel plate ring is fully welded inside the ventilation opening steel plates. With the above structure, the ventilation opening steel plates are pre-buried around the ventilation opening to ensure firm connection, and the steel plate ring is fully welded to further reinforce the ventilation opening.

[0009] Preferably: A hole embedded part is arranged at the ventilation opening, and embedded angle irons are fully welded on the outside of the hole embedded part. The embedded angle irons are closely attached to the edge of the air distribution box. With the above structure, it can prevent grain from leaking out from the edge during ventilation.

[0010] Preferably: A sealing gasket is arranged between the ventilation opening and the heat preservation and sealing door. With the above structure, the airtightness can be ensured, which is beneficial to heat preservation and airtightness.

[0011] Preferably: The air distribution box is connected to the wall in a butt joint form. The inside of the air distribution box includes a first-section air distribution box, a second-section air distribution box, and a third-section air distribution box. A short pipe is arranged at the upper end of the first-section air distribution box, a branch air duct is arranged on one side of the third-section air distribution box, and main air ducts are arranged at the front and rear ends of the third-section air distribution box. With the above structure, the main air duct and the branch air duct provide double-sided ventilation, the ventilation uniformity of the above-ground cages is good, the ventilation resistance is small, no trenching is required on the floor, and the first-section air distribution box is used for nitrogen circulation, sterilization, and pest control.

[0012] Preferably, the floor cages of the main air duct and the branch air ducts are in an arch shape. Reinforcing ribs are arranged inside the floor cages, and tie rods are inserted through the bottoms of the floor cages. With the above structure, the tie rods can maintain the shape of the floor cages, and the reinforcing ribs can increase the stacking height of the grain that the floor cages can bear, avoiding bending.

[0013] Preferably, regulating valve holes and detection holes are provided on the floor cages of the branch air ducts connected to the air distribution box. The regulating valve holes are located at the uppermost ends of the floor cages, and the detection holes are symmetrically arranged on the left and right sides of the floor cages, with the regulating valve holes being on the side close to the air distribution box. With the above structure, the detection holes can detect whether the air is flowing inside the floor cages, and the regulating valve holes can adjust the air inside them to ensure smooth ventilation.

[0014] Preferably, sealing baffles are provided at the ends of the main air duct and the branch air ducts, and a number of through holes are provided on the sealing baffles. With the above structure, it can prevent grain from entering the interior of the air ducts during ventilation.

[0015] Preferably, a flange is provided at the upper end of the short pipe, and the controlled atmosphere circulation pipe is connected to the short pipe through the flange. The controlled atmosphere circulation pipe includes a vertical circulation pipe, a horizontal circulation pipe, and a bent pipe, which are connected in sequence and lead to the outside of the warehouse. With the above structure, it can achieve uniform diffusion of nitrogen in the grain pile, effectively prevent and kill pests, and delay the change of grain quality.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The provided floor cage ventilation system realizes ventilation for cooling and dehumidifying, removes the heat accumulated in the grain pile, reduces the temperature difference in the grain pile, prevents or eliminates moisture transfer, stratification or condensation, and the interior and exterior of the floor cages are treated with anti-corrosion, capable of withstanding the pressure of high-piled grain of more than 7 meters, and extending the service life; at the same time, combined with the controlled atmosphere circulation pipeline of the ventilation system for controlled atmosphere circulation to kill insects, realizing safe grain storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is Figure 1 the sectional view taken along A-A in

[0019] Figure 3 is a schematic structural diagram of the axial flow fan 3;

[0020] Figure 4 is a schematic structural diagram of the ventilation opening steel plate 10;

[0021] Figure 5 is a schematic structural diagram of the steel plate ring 11;

[0022] Figure 6Schematic diagram of the embedded angle iron 13;

[0023] Figure 7 Schematic diagram of the structure of the air distribution box 5;

[0024] Figure 8 For Figure 7 View from direction C in

[0025] Figure 9 For Figure 7 Top view of

[0026] Figure 10 Layout plan of the regulating valve hole 19 and the inspection hole 20 of the branch air duct;

[0027] Figure 11 For Figure 10 Cross-sectional view taken along B - B in

[0028] Figure 12 For Figure 10 Cross-sectional view taken along C - C;

[0029] Figure 13 Cross-sectional view of the above-ground cage of the main air duct;

[0030] Figure 14 Cross-sectional view of the above-ground cage of the branch air duct;

[0031] Figure 15 Schematic diagram of the structure at the end of the air duct;

[0032] Figure 16 Schematic diagram of the sealing baffle. Specific implementation mode

[0033] The present utility model will be further described below in conjunction with the embodiments and the drawings.

[0034] As Figures 1 to 6 shown, a ventilation system for storing grain in a bungalow warehouse mainly includes a wall 1, a ventilation opening 2 penetrating the wall 1 is opened on the wall 1, an axial flow fan 3 is arranged in the ventilation opening 2, a heat preservation and sealing door 4 is installed at the ventilation opening 2 outside the axial flow fan 3, an air distribution box 5 communicated with the ventilation opening 2 is installed inside the ventilation opening 2, a main air duct 6 and a branch air duct 7 are respectively connected to one side of the air distribution box 5 away from the ventilation opening 3, the main air duct 6 and the branch air duct 7 are both communicated with at least one or more above-ground cages 16, and an air conditioning circulation pipe 8 communicated with the outside of the warehouse is further connected to the upper end of the air distribution box 5.

[0035] Ventilation opening steel plates 10 are pre-embedded around the ventilation opening 2. Steel plate rings 11 are fully welded inside the ventilation opening steel plates 10 to enhance the firmness of the ventilation opening 2. A hole embedded part 12 is provided at the ventilation opening 2. Embedded angle irons 13 are fully welded on the outer side of the hole embedded part 12. The embedded angle irons 13 are closely attached to the edge of the air distribution box 5 to prevent grain leakage.

[0036] An air inlet connecting piece 9 is provided on the axial flow fan 3. The connecting piece 9 is bolted to the axial flow fan 3. The connecting piece 9 and the ventilation opening 2 are tightly connected by a handwheel to avoid air leakage. A sealing gasket 14 is provided between the ventilation opening 2 and the thermal insulation and sealing door 4. The thermal insulation and airtight door is required to be airtight under a pressure of 1.0 kPa to ensure airtightness. When not ventilating, the ventilation opening 2 is sealed with the thermal insulation and sealing door 4 to facilitate heat preservation and airtightness, and an airtight connection is made with the opening.

[0037] As Figures 7 to 9 shown, the air distribution box 5 is connected to the wall 1 in a butt joint form. The interior of the air distribution box 5 includes a first-section air distribution box 501, a second-section air distribution box 502, and a third-section air distribution box 503. A short pipe 15 is provided at the upper end of the first-section air distribution box 501. A branch air duct 7 is provided on one side of the third-section air distribution box 503. Main air ducts 6 are provided at the front and rear ends of the third-section air distribution box 503. A flange is provided at the upper end of the short pipe 15. The controlled atmosphere circulation pipe 8 is communicated with the short pipe 15 through the flange. The controlled atmosphere circulation pipe 8 includes a vertical circulation pipe 801, a horizontal circulation pipe 802, and a bend pipe 803. The vertical circulation pipe 801, the horizontal circulation pipe 802, and the bend pipe 803 are connected in sequence and lead to the outside of the warehouse. Full welding is used for all connections between the flange and the pipe, and between the pipes. The allowable coordinate and elevation deviation for pipe installation is 15 mm. When the flange is connected to the pipe, it should be kept parallel, and the deviation is not more than 1.5 / 1000 of the outer diameter of the flange and not more than 2 mm. When using a soft gasket, the gasket size should match the flange sealing surface.

[0038] As Figure 9 、 Figure 13 and Figure 14As shown in the figure, openings are made in the third air distributor 503. The shape of the openings is arch-shaped, and the size of the openings is determined by the criterion of no grain leakage. The openings are fixed to the main air duct 6 and the branch air duct 7 through bolt pins. The floor cages 16 of the main air duct 6 and the branch air duct 7 are arch-shaped. Reinforcing ribs 24 are arranged inside the floor cage 16. Tie rods 17 are penetrated through the bottom of the floor cage 16. The components inside and outside the floor cage 16 are treated with anti-corrosion. It is required to be able to bear the pressure of 7-meter-high piled grain. Through holes are opened in the main floor cage 1601 of the main air duct 6. The opening rate of the main floor cage 1601 near the wall is 8%, while the opening rate of the branch floor cage 1602 of the branch air duct 7 is 30%. The lengths of the main air duct 6 and the branch air duct 7 should be adjusted specifically according to the on-site situation. The main air duct 6 and the branch air duct 7 are connected to each other, and the branch air ducts 7 are connected to each other by means of lapping.

[0039] As Figures 10 to 12 shown, regulating valve holes 19 and detection holes 20 are opened in the branch floor cage 1602 of the branch air duct 7 connected to the air distribution box 5. A regulating plate 21 is arranged inside the branch floor cage 1602. The regulating plate 21 is 3 mm thick. A regulating valve positioning tube 22 fixed to the tie rod 17 is arranged at the bottom of the regulating plate 21. The regulating valve hole 19 is located at the uppermost end of the floor cage 16. A locking nut 23 is penetrated through the regulating valve hole 19. The detection holes 20 are symmetrically arranged on the left and right sides of the floor cage 16, and the regulating valve hole 19 is on the side close to the air distribution box 5.

[0040] As Figure 15 and Figure 16 shown, sealing baffles 18 are arranged at the ends of the main air duct 6 and the branch air duct 7. A number of through holes are opened in the sealing baffles 18, and the opening rate is 30%.

[0041] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. A bungalow warehouse grain ventilation system, comprising a wall (1), characterized in that: A ventilation opening (2) penetrating the wall (1) is formed in the wall (1). An axial flow fan (3) is arranged in the ventilation opening (2). A heat preservation and sealing door (4) is installed in the ventilation opening (2) outside the axial flow fan (3). An air distribution box (5) communicating with the ventilation opening (2) is installed inside the ventilation opening (2). The side of the air distribution box (5) far from the ventilation opening (2) is respectively connected with a main air duct (6) and a branch air duct (7). The main air duct (6) and the branch air duct (7) are both communicated with at least one above-ground cage (16). The upper end of the air distribution box (5) is also connected with a gas conditioning circulation pipe (8) communicating with the outside of the bin.

2. The flat-roofed warehouse grain ventilation system according to claim 1, wherein: An air inlet connecting piece (9) is arranged on the axial flow fan (3). The connecting piece (9) is connected with the axial flow fan (3) by bolts. The connecting piece (9) and the ventilation opening (2) are tightly connected by a handwheel.

3. A bungalow warehouse grain ventilation system according to claim 1, characterized in that: Ventilation opening steel plates (10) are pre-buried around the ventilation opening (2). A steel plate ring (11) is welded entirely inside the ventilation opening steel plates (10).

4. The flat-roofed warehouse grain ventilation system according to claim 1 or 3, characterized in that: A hole embedded part (12) is arranged at the ventilation opening (2). An embedded angle iron (13) is welded full outside the hole embedded part (12). The embedded angle iron (13) is close to the edge of the air distribution box (5).

5. The ventilation system for storing grain in a bungalow warehouse according to claim 1, wherein: A sealing gasket (14) is arranged between the ventilation opening (2) and the heat preservation and sealing door (4).

6. The ventilation system for storing grain in a bungalow warehouse according to claim 1, wherein: The air distribution box (5) is connected with the wall (1) in a butt joint form. The inside of the air distribution box (5) includes a first-section air distribution box (501), a second-section air distribution box (502) and a third-section air distribution box (503). A short pipe (15) is arranged at the upper end of the first-section air distribution box (501). A branch air duct (7) is opened on one side of the third-section air distribution box (503). Main air ducts (6) are opened at the front and rear ends of the third-section air distribution box (503).

7. The ventilation system for storing grain in a bungalow warehouse according to claim 6, characterized in that: The above-ground cages (16) of the main air duct (6) and the branch air duct (7) are in an arch shape. A reinforcing rib (24) is arranged inside the above-ground cage (16). A pull rod (17) penetrates through the bottom of the above-ground cage (16).

8. A bungalow storage grain ventilation system according to claim 6 or 7, characterized in that: A regulating valve hole (19) and a detection hole (20) are opened on the above-ground cage (16) of the branch air duct (7) connected to the air distribution box (5). The regulating valve hole (19) is located at the uppermost end of the above-ground cage (16). The detection holes (20) are symmetrically arranged on the left and right sides of the above-ground cage (16). The regulating valve hole (19) is close to the side of the air distribution box (5).

9. A bungalow storage grain ventilation system according to claim 6 or 7, characterized in that: Sealing baffle plates (18) are arranged at the ends of the main air duct (6) and the branch air duct (7). A plurality of through holes are opened on the sealing baffle plates (18).

10. The a bungalow storage grain ventilation system according to claim 6, characterized in that: A flange is arranged at the upper end of the short pipe (15). The gas conditioning circulation pipe (8) is communicated with the short pipe (15) through the flange. The gas conditioning circulation pipe (8) includes a vertical circulation pipe (801), a horizontal circulation pipe (802) and a bent pipe (803). The vertical circulation pipe (801), the horizontal circulation pipe (802) and the bent pipe (803) are connected in sequence and lead to the outside of the bin.

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