Waterproof and moistureproof underground granary with active dewatering function and grain storage method

Abstract

The active hydrophobic waterproof and moistureproof underground granary comprises a center cylinder and an outer cylinder arranged on the peripheral side of the center cylinder, a grain storage area is formed between the outer cylinder and the center cylinder, the bottom of the outer cylinder and the lower portion of the center cylinder are sealed through a sealing part, and permeation holes are formed in the sealing part and the center cylinder. A plurality of temperature and humidity monitoring mechanisms are arranged in the grain storage area, an exhaust fan used for conveying airflow in the grain storage area outwards is arranged at the top of the center cylinder, and a water collecting groove is formed in the peripheral side of the bottom of the center cylinder and used for collecting underground seepage water and condensate water seeping down from the grain storage area through a sealing piece; underground seepage water and condensate water in the water collecting tank can penetrate through the cylinder wall of the center cylinder and enter the center cylinder, and a water level monitoring mechanism used for monitoring the water level and a drainage mechanism used for draining water outwards are arranged in the center cylinder. A traditional passive waterproof system is changed into an active hydrophobic waterproof system, and the waterproof and moisture-proof effects of the underground granary are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground granaries, in particular to an actively hydrophobic, waterproof and moisture-proof underground granary and a grain storage method. Background Art

[0002] Underground granaries are widely used for large-scale grain storage due to their advantages in insulation, heat preservation, and moisture resistance. However, groundwater infiltration and condensation on the silo walls often lead to increased humidity within the silo, which in turn causes condensation and mildew on the grain, seriously threatening the quality and safety of stored grain. To address this, traditional underground granaries typically have hollow walls surrounding the silo with drainage channels within to remove water, and vents to reduce humidity. However, this design has a significant drawback: while the hollow walls can drain condensation, they can also allow groundwater to seep through the hollow walls and enter the silo interior. Summary of the Invention

[0003] In order to address the deficiencies of the prior art, the present invention provides an actively hydrophobic waterproof and moisture-proof underground granary and a grain storage method, thereby improving the waterproof and moisture-proof effects of the underground granary.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an actively hydrophobic, waterproof and moisture-proof underground granary and grain storage method, comprising a central tube and an outer tube arranged on the periphery of the central tube, a grain storage area is formed between the outer tube and the central tube, and the bottom of the outer tube and the lower part of the central tube are closed by a sealing member, and penetration holes are provided on the sealing member and the central tube, and a number of temperature and humidity monitoring mechanisms are provided in the grain storage area, and an exhaust fan for conveying the airflow in the grain storage area to the outside is provided on the top of the central tube, and a water collecting trough is provided on the periphery of the bottom of the central tube, and the water collecting trough is used to collect underground seepage water and condensation water that seeps down through the sealing member in the grain storage area, and the underground seepage water and condensation water in the water collecting trough can both penetrate through the tube wall of the central tube and enter the central tube, and a water level monitoring mechanism for monitoring the water level and a drainage mechanism for draining water to the outside are provided in the central tube.

[0005] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: the inner diameter of the outer cylinder gradually decreases from top to bottom, and the outer wall of the outer cylinder is supported by a supporting assembly.

[0006] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: the support assembly includes multiple groups of mounting frames arranged around the outer tube, each group of mounting frames is provided in multiple numbers, and the mounting frames in the same group are distributed radially along the outer tube.

[0007] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: the water collection trough includes a baffle ring and a water collection plate arranged upper and lower, and there is a gap between the baffle ring and the water collection plate for underground seepage water to pass through, the baffle ring is arranged on the circumference of the central tube and is fixedly connected to the closure member, a diversion area is formed between the baffle ring and the central tube, and the bottom of the central tube falls on the water collection plate.

[0008] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: the closing piece is arranged in a ring shape, the closing piece is fixedly mounted on the central tube, and the inner wall of the closing piece contacts the outer wall of the central tube, the bottom of the outer tube rests on the closing piece and the bottom of the outer tube is fixedly connected to the closing piece.

[0009] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: the water level monitoring mechanism includes a fiber rope and a pulley group cooperating with the fiber rope, one end of the fiber rope is connected to a float, and the other end of the fiber rope is connected to a pendulum after passing around the pulley, and a ruler is provided next to the pendulum, and the ruler and the pulley group are fixedly connected to the inner wall of the central tube, and a camera for monitoring the position of the pendulum is provided on the inner wall of the central tube.

[0010] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: a limiting cylinder is arranged in the central cylinder, and the limiting cylinder is placed on the water collecting plate, a plurality of water inlet holes are opened on the limiting cylinder, and the float is arranged in the limiting cylinder.

[0011] As a further optimization of the invention of an actively hydrophobic waterproof and moisture-proof underground granary: the drainage mechanism includes a contact magnetically controlled waterproof switch and a submersible pump, the contact magnetically controlled waterproof switch is connected to the submersible pump through an electric wire, the submersible pump is placed on the water collecting plate, and the submersible pump is connected to a drain pipe for outward drainage.

[0012] As a further optimization of the invention of an actively hydrophobic, waterproof and moisture-proof underground granary: a number of ground cages are arranged on the inner wall of the outer cylinder, and an installation space for installing the temperature and humidity monitoring mechanism is formed between the ground cages and the inner wall of the outer cylinder, and a number of through holes are opened on the surface of the ground cages to connect with the grain storage area.

[0013] The technical solution adopted by the present invention to solve the above technical problems is: a grain storage method based on the above-mentioned active hydrophobic waterproof and moisture-proof underground granary, the method comprising the following steps:

[0014] After the underground seepage water and condensed water in the sump and the condensed water in the grain storage area enter the central tube through the infiltration holes, the water level monitoring data in the central tube is obtained by the water level monitoring mechanism, and based on the water level monitoring data, it is determined whether the underground granary needs to be drained;

[0015] When the underground granary needs to be drained, the drainage mechanism is activated to discharge the underground seepage water and condensed water in the central tube to the outside;

[0016] Obtain temperature and humidity monitoring data from the grain storage area through a temperature and humidity monitoring agency, and determine whether the underground granary needs to adjust the temperature and humidity based on the temperature and humidity monitoring data;

[0017] When the temperature and humidity in the underground granary need to be adjusted, the exhaust fan is started to draw the air in the grain storage area into the central tube through the infiltration holes and then transport it outward.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) The present invention is achieved by sealing the bottom of the outer tube and the lower part of the central tube with a sealing member, and both the sealing member and the central tube are provided with penetration holes. A plurality of temperature and humidity monitoring mechanisms are provided in the grain storage area, and an exhaust fan is provided on the top of the central tube for conveying the airflow in the grain storage area to the outside. When the temperature and humidity monitoring mechanism detects that the temperature and humidity in the grain storage area reach the temperature and humidity threshold value, the exhaust fan is started, and the temperature and humidity monitoring mechanism sends a warning signal; at this time, the airflow in the grain storage area will enter the central tube through the penetration hole, and then the airflow will be dispersed outward from the central tube, which can automatically dissipate heat and dehumidify the grain in the grain storage area.

[0020] 2) The present invention provides a water collection trough on the peripheral side of the bottom of the central tube, which is used to collect underground seepage water and condensation water that penetrates through the sealing member in the grain storage area. The underground seepage water and condensation water in the water collection trough can both penetrate through the wall of the central tube and enter the central tube. A water level monitoring mechanism for monitoring the water level and a drainage mechanism for draining water outward are provided in the central tube. When the water level monitoring mechanism detects that the water level in the central tube reaches a preset value, the drainage mechanism automatically starts to discharge the water in the central tube outward, thereby further improving the waterproof effect of the underground granary.

[0021] 3) The present invention sets up a water collecting trough, which includes a baffle ring and a water collecting plate arranged above and below, and there is a gap between the baffle ring and the water collecting plate for underground seepage water to pass through. The baffle ring is arranged on the peripheral side of the central tube and is fixedly connected to the closing member. A diversion area is formed between the baffle ring and the central tube, and the bottom of the central tube falls on the water collecting plate. The overall design of the water collecting trough of the present invention has a good collection effect on condensed water and underground seepage water, ensuring that the condensed water and underground seepage water can be better discharged to the outside, further improving the waterproof effect of the underground granary. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the water level monitoring mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the drainage mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the cooperation between the temperature and humidity controller, the temperature and humidity sensor, and the ground cage of the present invention;

[0027] Markings in the figure: 1. Center tube, 2. Outer tube, 3. Water collecting trough, 4. Water collecting plate, 5. Retaining ring, 6. Gap, 7. Diversion area, 8. Water level monitoring mechanism, 9. Drainage mechanism, 10. Closing part, 11. Exhaust fan, 12. Camera, 13. Through hole, 14. Temperature and humidity controller, 15. Temperature and humidity sensor, 16. Limiting tube, 17. Float, 18. Fiber rope, 19. Pulley block, 20. Pendant, 21. Ruler, 22. First bolt, 23. Mounting plate, 24. Submersible pump, 25. Contact magnetic control waterproof switch, 26. Electric wire, 27. Drain pipe, 28. Check valve, 29. Counterweight, 30. Mounting card, 31. Ground cage, 32. Mounting frame, 33. Water inlet. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts not described and disclosed in detail in the following embodiments of the present invention should be understood as existing technologies known or should be known to those skilled in the art, such as the model of the exhaust fan 11, the model of the camera 12, the model of the temperature and humidity controller 14, the model of the temperature and humidity sensor 15, how the pulley block 19 and the fiber rope 18 cooperate, the model of the submersible pump 24, the model of the contact magnetic control waterproof switch 25, the model of the electric wire 26, the model of the drain pipe 27, the model of the check valve 28, and the material of the ground cage 31.

[0029] Example 1

[0030] An active hydrophobic waterproof and moisture-proof underground granary and grain storage method, such as Figure 1 and Figure 2As shown, it includes a central tube 1 and an outer tube 2 arranged on the peripheral side of the central tube 1, a grain storage area is formed between the outer tube 2 and the central tube 1, and the bottom of the outer tube 2 and the lower part of the central tube 1 are closed by a sealing member 10, and the sealing member 10 and the central tube 1 are both provided with penetration holes, and a number of temperature and humidity monitoring mechanisms are provided in the grain storage area. The top of the central tube 1 is provided with an exhaust fan 11 for conveying the airflow in the grain storage area to the outside, and a water collecting trough 3 is provided on the peripheral side of the bottom of the central tube 1, and the water collecting trough 3 is used to collect underground seepage water and condensation water that penetrates through the sealing member 10 in the grain storage area, and the underground seepage water and condensation water in the water collecting trough 3 can penetrate through the tube wall of the central tube 1 into the central tube 1, and a water level monitoring mechanism 8 for monitoring the water level and a drainage mechanism 9 for draining water outward are provided in the central tube 1.

[0031] Grain is stored in the grain storage area formed between the central tube 1 and the outer tube 2. Since the bottom of the outer tube 2 and the lower part of the central tube 1 are sealed by the sealing member 10, it is possible to prevent grain from falling out of the grain storage area. When the temperature and humidity monitoring mechanism detects that the temperature and humidity in the grain storage area have reached the temperature and humidity threshold, the exhaust fan 11 is started, and the temperature and humidity monitoring mechanism sends a warning signal; after the exhaust fan 11 is started, because both the sealing member 10 and the central tube 1 are provided with penetration holes, the airflow in the grain storage area will enter the central tube 1 through the penetration holes, and then the airflow will be dispersed outward from the central tube 1, which can dissipate heat and dehumidify the grain in the grain storage area. The penetration hole is a porous structure formed when the central tube 1 is processed. The working principle of the exhaust fan 11 and the temperature and humidity monitoring mechanism, as well as the cooperation between the exhaust fan 11 and the temperature and humidity monitoring mechanism are conventional existing technologies in this field and will not be elaborated on here.

[0032] Because the water collection tank 3 is arranged on the peripheral side of the bottom of the central tube 1, the condensed water in the central tube 1, the outer tube 2 and the grain storage area will enter the water collection tank 3 through the infiltration holes on the closure 10, and the underground seepage water will also enter the water collection tank 3. Finally, the water collected in the water collection tank 3 will enter the central tube 1 through the infiltration holes, so that the water levels in the water collection tank 3 and the central tube 1 are consistent. When the water level monitoring mechanism 8 detects that the water level in the central tube 1 reaches the preset value, the drainage mechanism 9 is activated to discharge the water in the central tube 1 to the outside, further improving the waterproof effect of the underground granary. The working principles of the water level monitoring mechanism 8 and the drainage mechanism 9 and the coordination between the water level monitoring mechanism 8 and the drainage mechanism 9 are conventional existing technologies in this field and will not be elaborated on here.

[0033] The above is a basic implementation of the present invention, which can be further improved, optimized and limited to obtain the following embodiments:

[0034] Example 2

[0035] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 1 and Figure 2 As shown, the inner diameter of the outer cylinder 2 gradually decreases from top to bottom, increasing the volume of the grain storage area. The outer wall of the outer cylinder 2 is supported by a support assembly, ensuring the stability of the underground granary. In this embodiment, the support assembly includes multiple sets of mounting frames 32 arranged around the outer cylinder 2. Each set of mounting frames 32 is provided with multiple mounting frames 32, and the mounting frames 32 in the same set are distributed radially along the outer cylinder 2. Multiple mounting frames 32 support the outer cylinder 2, forming multiple support points, further enhancing the stability of the underground granary.

[0036] Example 3

[0037] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 1 As shown, the water collecting trough 3 includes a retaining ring 5 and a water collecting plate 4 arranged upper and lower, and there is a gap 6 between the retaining ring 5 and the water collecting plate 4 for underground seepage water to pass through. The retaining ring 5 is arranged on the peripheral side of the central tube 1 and is fixedly connected to the closing member 10. A guide area 7 is formed between the retaining ring 5 and the central tube 1, and the bottom of the central tube 1 falls on the water collecting plate 4.

[0038] The closure 10 is provided with a penetration hole, so that condensed water can pass through the closure 10 through the penetration hole; after passing through the closure 10, the condensed water will enter the guide area 7 formed between the retaining ring 5 and the central tube 1; the guide area 7 guides the condensed water, so that part of the condensed water will enter the central tube 1 through the penetration hole on the central tube 1, and the other part of the condensed water will slide down along the guide area 7 to the water collecting plate 4; since there is a gap 6 between the water collecting plate 4 and the retaining ring 5, the underground seepage water will enter the gap 6 and reach the water collecting plate 4 and merge with the part of the condensed water that has slid onto the water collecting plate 4; then the merged condensed water and underground seepage water will enter the central tube 1 through the penetration hole on the central tube 1. The overall design of the water collecting trough 3 of the present invention has a good collection effect on condensed water and underground seepage water, ensuring that the condensed water and underground seepage water can be better discharged to the outside, further improving the waterproof effect of the underground granary.

[0039] In addition, the setting of the retaining ring 5 ensures that underground seepage water can only enter the central tube 1 through the gap 6 between the retaining ring 5 and the water collecting plate 4, and will not cause the underground seepage water to reversely seep into the grain storage area.

[0040] The water collecting plate 4 of the present invention is arranged on an underground foundation, which is a conventional prior art in the art and is therefore not shown in the drawings.

[0041] Example 4

[0042] This embodiment is an improvement on the basis of embodiment 3. Its main structure is the same as that of embodiment 3. The improvement is as follows: Figure 1 As shown, the closing member 10 is arranged in a ring shape, and the closing member 10 is fixedly sleeved on the central tube 1, and the inner wall of the closing member 10 contacts the outer wall of the central tube 1, and the bottom of the outer tube 2 rests on the closing member 10 and the bottom of the outer tube 2 is fixedly connected to the closing member 10.

[0043] Because the central tube 1 is cylindrical, the closure member 10 is annular. The inner diameter of the annular closure member 10 is the same as the outer diameter of the central tube 1, preventing a gap between the closure member 10 and the central tube 1 from causing grain in the grain storage area to fall out of the gap. The closure member 10 is fixedly mounted on the central tube 1, and the bottom of the outer tube 2 is fixedly abutted against the closure member 10, forming a stable structure between the closure member 10, the outer tube 2, and the central tube 1.

[0044] Example 5

[0045] This embodiment is an improvement on the basis of embodiment 3. Its main structure is the same as that of embodiment 3. The improvement is as follows: Figure 1 and Figure 3 As shown, the water level monitoring mechanism 8 includes a fiber rope 18 and a pulley group 19 cooperating with the fiber rope 18, one end of the fiber rope 18 is connected to a float 17, and the other end of the fiber rope 18 is connected to a pendant 20 after passing through the pulley, and a scale 21 is provided next to the pendant 20, the scale 21 and the pulley group 19 are fixedly connected to the inner wall of the central tube 1, and a camera 12 for monitoring the position of the pendant 20 is provided on the inner wall of the central tube 1.

[0046] The pulley block 19 is mounted on the inner wall of the center tube 1 through the mounting plate 23, and the mounting plate 23 can be fixedly connected to the inner wall of the center tube 1 through a second bolt. The scale 21 is placed vertically in the center tube 1 and the scale 21 is fixedly connected to the inner wall of the center tube 1 through a first bolt 22. The float 17 floats on the water surface in the center tube 1. As the water surface rises, the float 17 rises, and accordingly, the plumb bob 20 drops. The distance that the plumb bob 20 drops can be determined based on the scale 21. The camera 12 monitors the falling distance of the plumb bob 20, and the water level monitoring mechanism 8 determines whether the water level has reached the preset value based on the falling distance. When the preset value is reached, the drainage mechanism 9 starts to drain; when the preset value is not reached, the drainage mechanism 9 stops draining. Among them, the cooperation between the camera 12, the water level monitoring mechanism 8 and the drainage mechanism 9 is conventional existing technology in this field, and will not be elaborated on here.

[0047] A limiting cylinder 16 is arranged in the center cylinder 1 and is placed on the water collecting plate 4. A plurality of water inlet holes 33 are formed in the limiting cylinder 16. Water in the center cylinder 1 enters the limiting cylinder 16 through the water inlet holes 33, so that the water level in the limiting cylinder 16 is consistent with the water level in the center cylinder 1. A floating ball 17 is arranged in the limiting cylinder 16 to prevent the floating ball 17 from floating randomly on the water surface.

[0048] Embodiment 6

[0049] This embodiment is an improved scheme based on embodiment 3. The main structure is the same as that of embodiment 3. The improvement lies in that, as shown in Figure 1 and Figure 4 The drainage mechanism 9 includes a contact magnetic control waterproof switch 25 and a submersible pump 24. The contact magnetic control waterproof switch 25 is connected with the submersible pump 24 through an electric wire 26. The submersible pump 24 is placed on the water collecting plate 4. The submersible pump 24 is connected with a drain pipe 27 for draining water outward.

[0050] The electric wire 26 is a waterproof electric wire 26. A counterweight 29 is arranged on the electric wire 26. Therefore, the contact magnetic control waterproof switch 25 is parallel to the center cylinder 1 in the initial state. When the water level in the center cylinder 1 rises to the preset value, the contact magnetic control waterproof switch 25 is perpendicular or close to perpendicular to the center cylinder 1. At this time, the submersible pump 24 is powered on to drain water outward through the drain pipe 27. When the water level in the center cylinder 1 falls below the preset value, the contact magnetic control waterproof switch 25 returns to the initial state. The submersible pump 24 is powered off. The working principle of the contact magnetic control waterproof switch 25 and the submersible pump 24 is a conventional prior art in the field, which will not be described in detail here.

[0051] A check valve 28 is arranged between the drain pipe 27 and the submersible pump 24. The drain pipe 27 is fixedly arranged on the inner wall of the center cylinder 1 through a mounting clamp 30.

[0052] Embodiment 7

[0053] This embodiment is an improved scheme based on embodiment 1. The main structure is the same as that of embodiment 1. The improvement lies in that, as shown in Figure 1 , Figure 2 and Figure 5 A plurality of ground cages 31 are arranged on the inner wall of the outer cylinder 2. The ground cages 31 and the inner wall of the outer cylinder 2 form a mounting space for mounting the temperature and humidity monitoring mechanism. A plurality of through holes 13 are formed in the surface of the ground cages 31 to communicate with the grain storage area.

[0054] The outer cylinder 2 is paved with a PP sheet, to which the ground cage 31 is fixedly connected. Several through-holes 13 are provided on the surface of the ground cage 31, connecting to the grain storage area. This prevents the temperature and humidity monitoring mechanism from being placed inside the ground cage 31 and unable to contact the grain storage area, which could lead to poor accuracy in the temperature and humidity monitoring results. The diameter of the through-holes 13 is smaller than the grain particle size to prevent grain from entering the ground cage 31.

[0055] The temperature and humidity monitoring mechanism includes a temperature and humidity controller 14 and a temperature and humidity sensor 15. The temperature and humidity precision controller determines whether the temperature and humidity thresholds have been reached based on the monitoring data from the temperature and humidity sensor 15. When the temperature and humidity thresholds are reached, the temperature and humidity controller 14 starts the exhaust fan 11 and issues an early warning signal.

[0056] The present invention further provides a grain storage method based on the above-mentioned active hydrophobic waterproof and moisture-proof underground granary, the method comprising the following steps:

[0057] After the underground seepage water and condensed water in the water collection tank 3 and the condensed water in the grain storage area enter the central tube 1 through the infiltration holes, the water level monitoring data in the central tube 1 is obtained by the water level monitoring mechanism 8, and it is determined whether the underground granary needs to be drained based on the water level monitoring data;

[0058] When the underground granary needs to be drained, the drainage mechanism 9 is started to discharge the underground seepage water and condensed water in the central tube 1 to the outside; the present invention can automatically monitor the water level of the underground granary and determine whether automatic drainage is needed based on the monitored water level monitoring data.

[0059] Obtain temperature and humidity monitoring data from the grain storage area through a temperature and humidity monitoring agency, and determine whether the underground granary needs to adjust the temperature and humidity based on the temperature and humidity monitoring data;

[0060] When the temperature and humidity of the underground granary need to be adjusted, the exhaust fan 11 is started to suck the air in the grain storage area into the central tube 1 through the infiltration hole and then transport it outward; the present invention can automatically monitor the temperature and humidity of the underground granary, and determine whether the temperature and humidity need to be automatically adjusted based on the monitored temperature and humidity monitoring data.

[0061] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An active hydrophobic waterproof and moisture-proof underground granary, characterized by: The invention comprises a central tube (1) and an outer tube (2) arranged on the peripheral side of the central tube (1); a grain storage area is formed between the outer tube (2) and the central tube (1); the bottom of the outer tube (2) and the lower part of the central tube (1) are sealed by a sealing member (10); the sealing member (10) and the central tube (1) are both provided with penetration holes; a plurality of temperature and humidity monitoring mechanisms are provided in the grain storage area; a suction fan (11) for conveying the airflow in the grain storage area to the outside is provided on the top of the central tube (1); a water collecting trough (3) is provided on the peripheral side of the bottom of the central tube (1); the water collecting trough (3) is used to collect underground seepage water and condensation water that permeates through the sealing member (10) in the grain storage area; and the underground seepage water and condensation water in the water collecting trough (3) can both permeate through the tube wall of the central tube (1) and enter the central tube (1); a water level monitoring mechanism (8) for monitoring the water level and a drainage mechanism (9) for draining water to the outside are provided in the central tube (1).

2. The active hydrophobic waterproof and moisture-proof underground granary according to claim 1, characterized in that: The inner diameter of the outer cylinder (2) gradually decreases from top to bottom, and the outer wall of the outer cylinder (2) is supported by a support assembly.

3. The active hydrophobic waterproof and moisture-proof underground granary according to claim 2, characterized in that: The support assembly comprises a plurality of mounting frames (32) arranged around the outer cylinder (2), each group of mounting frames (32) being provided in plurality, and the mounting frames (32) in the same group are distributed along the radial direction of the outer cylinder (2).

4. The active hydrophobic waterproof and moisture-proof underground granary according to claim 1, characterized in that: The water collecting trough (3) comprises a baffle ring (5) and a water collecting plate (4) arranged above and below, and a gap (6) for underground seepage water to pass through is present between the baffle ring (5) and the water collecting plate (4). The baffle ring (5) is arranged on the peripheral side of the central tube (1) and is fixedly connected to the closure member (10). A guide area (7) is formed between the baffle ring (5) and the central tube (1), and the bottom of the central tube (1) falls on the water collecting plate (4).

5. The active hydrophobic waterproof and moisture-proof underground granary according to claim 4, characterized in that: The closure member (10) is arranged in an annular shape, and is fixedly sleeved on the central tube (1), and the inner wall of the closure member (10) contacts the outer wall of the central tube (1), and the bottom of the outer tube (2) abuts against the closure member (10), and the bottom of the outer tube (2) is fixedly connected to the closure member (10).

6. The active hydrophobic waterproof and moisture-proof underground granary according to claim 4, characterized in that: The water level monitoring mechanism (8) comprises a fiber rope (18) and a pulley block (19) matched with the fiber rope (18), one end of the fiber rope (18) is connected to a float (17), the other end of the fiber rope (18) is connected to a pendant (20) after passing through the pulley, and a scale (21) is provided beside the pendant (20), the scale (21) and the pulley block (19) are both fixedly connected to the inner wall of the central tube (1), and a camera (12) for monitoring the position of the pendant (20) is provided on the inner wall of the central tube (1).

7. The active hydrophobic waterproof and moisture-proof underground granary according to claim 6, characterized in that: A limiting cylinder (16) is provided in the central cylinder (1), and the limiting cylinder (16) is placed on the water collecting plate (4). A plurality of water inlet holes (33) are provided on the limiting cylinder (16), and the floating ball (17) is provided in the limiting cylinder (16).

8. The active hydrophobic waterproof and moisture-proof underground granary according to claim 4, characterized in that: The drainage mechanism (9) comprises a contact magnetically controlled waterproof switch (25) and a submersible pump (24). The contact magnetically controlled waterproof switch (25) is connected to the submersible pump (24) via an electric wire (26). The submersible pump (24) is placed on the water collecting plate (4). The submersible pump (24) is connected to a drain pipe (27) for draining water outward.

9. The active hydrophobic waterproof and moisture-proof underground granary according to claim 1, characterized in that: A plurality of ground cages (31) are provided on the inner wall of the outer cylinder (2), and an installation space for installing the temperature and humidity monitoring mechanism is formed between the ground cages (31) and the inner wall of the outer cylinder (2). A plurality of through holes (13) are opened on the surface of the ground cages (31) to communicate with the grain storage area.

10. A grain storage method, characterized in that: Based on the active hydrophobic waterproof and moisture-proof underground granary according to claim 1, the method comprises the following steps: After underground seepage water and condensed water in the water collecting tank (3) and condensed water in the grain storage area enter the central cylinder (1) through the infiltration hole, water level monitoring data in the central cylinder (1) is obtained by the water level monitoring mechanism (8), and it is determined whether the underground granary needs to be drained based on the water level monitoring data; When the underground granary needs to be drained, the drainage mechanism (9) is activated to discharge the underground seepage water and condensed water in the central tube (1) to the outside; Obtain temperature and humidity monitoring data from the grain storage area through a temperature and humidity monitoring agency, and determine whether the underground granary needs to adjust the temperature and humidity based on the temperature and humidity monitoring data; When the temperature and humidity of the underground granary need to be adjusted, the exhaust fan (11) is started to suck the air in the grain storage area into the central tube (1) through the penetration hole and then transport it outward.

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