Rice seed storage device and method of use thereof

Abstract

The invention discloses a rice seed storage device, which relates to the technical field of rice seed storage, and comprises a storage tank, wherein the storage tank is provided with a rice inlet port and a rice outlet port, a debris removal cylinder is provided on the top of the storage tank, a debris removal port is provided on one side of the debris removal cylinder, and the debris removal port is connected to a negative pressure debris removal device; a rotating shaft and a first power assembly for driving the rotating shaft to rotate are coaxially installed in the storage tank; a fixed disk is provided in the storage tank, a plurality of through holes are provided on the fixed disk, a plurality of air inlets are provided at the bottom of the storage tank, and a net cylinder is connected between the air inlet and the through holes; a cone disk is rotatably installed on the top surface of the fixed disk, the rice inlet port is arranged opposite to the cone disk, a plurality of air outlets are provided on the cylinder wall of the cone disk, the cone disk is coaxially fixedly connected with the rotating shaft, a gap is provided between the periphery of the cone disk and the inner wall of the storage tank, and a plurality of scrapers are provided on the outer wall of the cone disk. The invention realizes the removal of impurities, moisture and heat when the rice seeds are loaded, and the continuous moisture and heat removal during storage. The storage quality of the rice seeds is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice seed storage, and in particular to a rice seed storage device and a use method thereof. Background Art

[0002] The quality of rice seeds is directly related to the quality of rice harvested after planting. The colloidal structure of rice seeds is loose and has weak resistance to high temperatures. Each time it passes through high temperatures, it will cause varying degrees of quality deterioration. The current method of preserving rice seeds is to repeatedly screen the harvested rice seeds to remove dust particles, husks and other impurities mixed in the rice seeds, and then store them in closed granaries. This method is cumbersome and causes great damage to the rice seeds, and cannot effectively overcome the impact of high temperature periods. Summary of the invention

[0003] In view of the above defects, an object of the present invention is to provide a rice seed storage device, aiming to solve the technical problem of poor rice seed storage effect in the prior art.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] The rice seed storage device comprises a vertically arranged storage tank, wherein a rice inlet port is arranged on the top of the storage tank, a rice outlet port is arranged on the bottom of the storage tank, a debris discharge cylinder is arranged on the top of the storage tank, a debris discharge port is arranged on one side of the debris discharge cylinder, and the debris discharge port is connected to a negative pressure debris removal device; a rotating shaft and a first power component for driving the rotating shaft to rotate are coaxially installed in the storage tank; a fixed disk is arranged in the storage tank, a plurality of through holes are arranged on the fixed disk, a plurality of air inlets are arranged at the bottom of the storage tank, and a net cylinder is detachably connected between the air inlet and the through holes; a cone disk is rotatably installed on the top surface of the fixed disk, the rice inlet port is arranged opposite to the cone disk, a plurality of air outlets are arranged on the cylinder wall of the cone disk, the cone disk is coaxially fixedly connected to the rotating shaft, a gap is arranged between the periphery of the cone disk and the inner wall of the storage tank, a plurality of scrapers are arranged on the outer wall of the cone disk, and the plurality of scrapers are arranged in a circle around the center line of the cone disk.

[0006] Among them, the inlet port is directly opposite to the upper part of the cone disk, the exhaust port is extended along the generatrix of the cone disk, and a plurality of exhaust ports are arranged in a circle around the center line of the cone disk.

[0007] Wherein, a first spiral blade is provided on the shaft section of the rotating shaft located between the fixed disk and the bottom of the storage tank.

[0008] The first spiral blade is provided with a plurality of sections along the axial direction of the rotating shaft, and the plurality of sections of the first spiral blade are arranged at intervals.

[0009] The net cylinder is rotatably connected to the through hole and the air inlet, a second power assembly for driving the net cylinder to rotate is arranged on the fixed disk, and a second spiral blade is arranged on the periphery of the net cylinder, and the second spiral blade has the same rotation direction as the first spiral blade.

[0010] Among them, the mesh cylinder includes a hard cylinder body and a flexible mesh sleeve, the flexible mesh sleeve is arranged outside the hard cylinder body, the hard cylinder body includes a coaxially arranged upper cylinder ring and a lower cylinder ring, and a plurality of metal rods are arranged between the opposite end faces of the upper cylinder ring and the lower cylinder ring. The plurality of metal rods are arranged in a circle around the axis of the mesh cylinder.

[0011] The top end of the second spiral leaf is fixedly connected to the upper cylinder ring, the bottom end of the second spiral leaf is fixedly connected to the lower cylinder ring, and the inner side of the second spiral leaf is spaced apart from the outer side of the flexible mesh sleeve.

[0012] Among them, the rice outlet port includes a first rice outlet cylinder, a second rice outlet cylinder arranged obliquely downward is connected to the side of the first rice outlet cylinder, the bottom end of the rotating shaft is rotatably connected to the first rice outlet cylinder, the rotating shaft is located on the shaft section of the first rice outlet cylinder and is sleeved with a sleeve, the sleeve is rotatably connected to the first rice outlet cylinder, a ratchet structure is provided between the rotating shaft and the sleeve, a third spiral leaf is provided outside the sleeve, and the rotation direction of the third spiral leaf is opposite to that of the first spiral leaf.

[0013] Among them, an air inlet box is provided at the bottom of the storage tank, and the air inlet is connected to the air inlet box. The rice seed storage device also includes a water tank pre-buried below 1.5m underground. A spiral air duct is provided in the water tank. One end of the spiral air duct extends above the ground and is connected to a blower. A filter is installed at the air inlet port of the blower. The other end of the spiral air duct is connected to the air inlet box. A pressure regulating valve is installed on the storage tank.

[0014] In view of the above drawbacks, another object of the present invention is to provide a method for using a rice seed storage device, comprising the following steps:

[0015] Step 1. The negative pressure impurity removal device and the blower are started synchronously. The first power assembly drives the cone disk to rotate, and the rice seeds are continuously transported to the storage tank through the rice inlet port. After the rice seeds are loaded, the storage height of the rice seeds does not exceed the bottom surface of the fixed disk, and then the rice inlet port is closed. The negative pressure impurity removal device and the blower continue to work for 2 to 5 hours;

[0016] Step 2. Every 5 to 8 hours, the negative pressure impurity removal device and the blower are started synchronously and stopped after working for 1 to 3 hours;

[0017] Step 3. Continue step 2 for 15 to 20 days, dismantle the negative pressure impurity removal device and filter, connect the impurity removal port to the air inlet port of the blower through a pipe, and stop the blower after working for 1 to 3 hours every 10 to 15 hours.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 1. In the present invention, the rotation of the rotating shaft drives the cone disk to rotate synchronously. After the rice seeds fall into the cone disk, they are transported downward along the outer wall of the cone disk. The scraper continuously scrapes and pushes the rice seeds, so that the rice seeds are continuously distributed around the cone disk, so that the rice seeds can be evenly distributed in the storage tank. In this process, the negative pressure impurity removal device continuously draws out the airflow mixed with impurities and moisture to remove impurities from the rice seeds, and the rice seeds already stored in the storage tank continue to dehumidify.

[0020] 2. Only one motor is needed to provide power. The forward rotation of the shaft can realize the removal of impurities and turning of rice seeds, and the reverse rotation of the shaft can realize the efficient feeding of rice seeds, which is convenient to use.

[0021] 3. The first spiral blade is provided with a plurality of sections at intervals along the axial direction of the rotating shaft. When the rotating shaft rotates forward, each first spiral blade continuously transports the rice seeds upward in a certain area, so that the rice seeds transported by each section of the first spiral blade can flow in the area, thereby improving the fluidity of the rice seeds and thus improving the heat dissipation and moisture removal effect of the rice seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional partial cutaway schematic diagram of a first embodiment of a rice seed storage device of the present invention;

[0023] Figure 2 is a cross-sectional schematic diagram of a second embodiment of a rice seed storage device of the present invention;

[0024] Figure 3 yes Figure 2 Disassembly diagram of the middle net tube;

[0025] Figure 4 yes Figure 3 The middle transverse cross-section of the middle net tube;

[0026] Figure 5 This is a schematic structural diagram of a third embodiment of a rice seed storage device according to the present invention;

[0027] Figure 6 It is a schematic diagram of one of the usage states of the rice seed storage device of the present invention.

[0028] In the figure, a storage tank 1, a rice inlet port 10, a rice outlet port 11, a first rice outlet cylinder 110, a second rice outlet cylinder 111, a sleeve 112, a third spiral blade 113, a debris discharge cylinder 12, a debris discharge port 120, an air inlet 13, an air inlet box 130, a pressure regulating valve 14, a negative pressure debris removal device 2, a rotating shaft 3, a motor 30, a first spiral blade 31, a driving gear 32, a fixed disk 4, a through hole 40, a bracket 41, a mesh cylinder 5, a hard cylinder 50, an upper cylinder ring 500, a lower cylinder ring 501, a metal rod 502, a flexible mesh sleeve 51, a driven gear 52, a second spiral blade 53, a cone disk 6, an exhaust port 60, a scraper 61, a water tank 7, a water inlet 70, a drain port 71, a spiral air duct 72, a blower 73, and a filter 730. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] The orientations mentioned in this specification are based on the orientations of the rice seed storage device and the method of using the same when the device is in normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0031] Embodiment 1:

[0032] like Figure 1 As shown, the rice seed storage device includes a storage tank 1 and a negative pressure impurity removal device 2.

[0033] The storage tank 1 is preferably a cylinder, and the storage tank 1 is installed and used vertically. The top and bottom of the storage tank 1 are both conical, and the middle part of the storage tank 1 is a straight cylinder. A rice inlet port 10 is provided on one side of the top of the storage tank 1, and a rice outlet port 11 is provided at the center of the bottom of the storage tank 1. A debris discharge cylinder 12 is provided at the center of the top of the storage tank 1, and a debris discharge port 120 is provided on one side of the debris discharge cylinder 12. The debris discharge port 120 is connected to the negative pressure debris removal device 2. The negative pressure debris removal device 2 is preferably a bag dust collector, and other similar devices with a filtering system and a negative pressure fan are also applicable.

[0034] A rotating shaft 3, a fixed disk 4, a net cylinder 5 and a cone disk 6 are arranged in the storage tank 1.

[0035] The rotating shaft 3 is coaxially installed in the storage tank 1. A first power assembly is installed on the top of the storage tank 1. The first power assembly includes an electric motor 30. The driving shaft of the electric motor 30 is connected to the rotating shaft 3 through a coupling. The electric motor 30 can drive the rotating shaft 3 to rotate forward or reverse.

[0036] A tic-tac-toe or cross-shaped bracket 41 is welded to the inner wall of the storage tank 1, and a fixed plate 4 is welded to the bracket 41. A gap of 20 to 40 cm is provided between the outer periphery of the fixed plate 4 and the inner wall of the storage tank 1. A plurality of through holes 40 are provided on the fixed plate 4. A plurality of air inlets 13 are provided at the bottom of the storage tank 1, and the mesh tube 5 is vertically arranged.

[0037] The bottom port of the net tube 5 is threadedly connected to the air inlet 13, and the top port of the net tube 5 is plugged into the through hole 40 and fixed by sealant. In other installation methods, the net tube 5 can also be connected to the air inlet 13 and the through hole 40 respectively through flange components.

[0038] The cone disk 6 is arranged above the fixed disk 4, and a rotating sealing ring or a thrust bearing is arranged between the bottom of the cone disk 6 and the fixed disk 4. The cone disk 6 is arranged forward, and the rice inlet port 10 is directly opposite to the outer wall of the upper part of the cone disk 6. The cylinder wall of the cone disk 6 is provided with a plurality of exhaust ports 60, and the exhaust ports 60 penetrate the inner wall and the outer wall of the cone disk 6. The cone disk 6 is coaxially fixedly connected with the rotating shaft 3, and the outer wall of the cone disk 6 is provided with a plurality of scrapers 61, and the plurality of scrapers 61 are arranged in a circle around the center line of the cone disk 6. When the rotating shaft 3 rotates, the cone disk 6 can be driven to rotate synchronously, and a gap is provided between the periphery of the cone disk 6 and the inner wall of the storage tank 1. The rice seeds fall onto the cone disk 6, and then are transported downward along the outer wall of the cone disk 6. When the rotating shaft 3 rotates, the cone disk 6 is driven to rotate synchronously, and then the scraper 61 continuously scrapes and pushes the rice seeds, so that the rice seeds are continuously distributed around the cone disk 6, so that the rice seeds can be evenly distributed in the storage tank 1. During this process, the induced draft fan in the negative pressure impurity removal device 2 continuously draws out the airflow mixed with impurities and moisture to remove impurities from the rice seeds; and the rice seeds already stored in the storage tank 1 continue to be dehumidified.

[0039] Furthermore, the rice inlet port 10 faces the upper part of the cone 6, and the air outlet 60 is a slit structure, and the air outlet 60 is extended along the generatrix of the cone 6, and a plurality of air outlets 60 are arranged in a circle around the center line of the cone 6, so that the plurality of air outlets 60 extend radially from the top center of the cone 6 to the surroundings. The ventilation volume of the cone decreases from top to bottom, making the air volume distribution more reasonable, and the impurity separation process in the rice seeds more concentrated and efficient.

[0040] Embodiment 2

[0041] The difference between this embodiment and the first embodiment is that Figure 2 , Figure 3 as well as Figure 4 As shown together, the first spiral blade 31 is coaxially welded on the shaft section of the rotating shaft 3 between the fixed plate 4 and the bottom of the storage tank 1. When the rotating shaft 3 rotates forward, the first spiral blade 31 continuously transports the rice seeds upward, so that the rice seeds stored in the storage tank 1 can flow, so that the hot and humid air in the rice seeds can be effectively dissipated; when the rotating shaft 3 rotates reversely, the first spiral blade 31 continuously transports the rice seeds downward, so that the rice seeds can be effectively discharged.

[0042] Furthermore, the first spiral blade 31 is provided with multiple sections along the axial direction of the rotating shaft 3, and the multiple sections of the first spiral blade 31 are arranged at intervals. When the rotating shaft 3 rotates forward, each first spiral blade 31 continuously transports the rice seeds upward in a certain area, so that the rice seeds transported by each section of the first spiral blade 31 can flow in the area, thereby improving the fluidity of the rice seeds.

[0043] Furthermore, the net drum 5 is connected to the through hole 40 and the air inlet 13 through a rotating sealing ring, and a second power assembly for driving the net drum 5 to rotate is provided on the fixed plate 4, and the second power assembly includes a driving gear 32 coaxially fixed to the rotating shaft 3 and a driven gear 52 coaxially fixed to the net drum 5, and the driving gear 32 is meshed with the driven gear 52; a second spiral leaf 53 is provided on the periphery of the net drum 5. The second spiral leaf 53 can be set to one or more sections. When the rotating shaft 3 rotates, the net drum 5 can be driven to rotate synchronously, so that the rice near the second spiral leaf 53 can continuously flow synchronously, thereby improving the flow of hot and humid air in the rice seeds.

[0044] Preferably, the net tube 5 includes a hard cylinder 50 and a flexible net sleeve 51, the hard cylinder 50 includes an upper cylinder ring 500 and a lower cylinder ring 501 which are coaxially arranged, the upper cylinder ring 500 and the lower cylinder ring 501 are arranged with equal diameters, a plurality of metal rods 502 are arranged between the opposite end faces of the upper cylinder ring 500 and the lower cylinder ring 501, and the plurality of metal rods 502 are arranged in a circular arrangement around the axis of the net tube 5. There is a gap of 0.8 to 1.2 cm between two adjacent metal rods 502, and the flexible net sleeve 51 is preferably a nylon braided net sleeve, which is sleeved outside the hard cylinder 50, and the two ends of the nylon braided net sleeve are respectively bonded and fixed to the upper cylinder ring 500 and the lower cylinder ring 501. The hard cylinder 50 is the skeleton structure of the net tube 5, and the flexible characteristics of the nylon braided net sleeve can block rice seeds and ensure ventilation. The hard cylinder 50 and the flexible mesh sleeve 51 are used in combination to improve the effect of removing moisture and heat from the mesh cylinder 5. Furthermore, the nylon braided mesh sleeve is not easily blocked by seeds, and the replacement cost is low.

[0045] Furthermore, the top of the second spiral leaf 53 is welded to the upper cylinder ring 500, the bottom of the second spiral leaf 53 is welded to the lower cylinder ring 501, and there is a gap of 3 to 5 cm between the inner side of the second spiral leaf 53 and the outer side of the flexible mesh sleeve 51, which effectively avoids interference between the second spiral leaf 53 and the flexible mesh sleeve 51.

[0046] Embodiment 3

[0047] The difference between this embodiment and the first embodiment is that Figure 5As shown, the rice outlet port 11 includes a first rice outlet cylinder 110, which is coaxially arranged with the impurity discharge cylinder 12, and a second rice outlet cylinder 111 which is obliquely downwardly arranged is connected to the side of the first rice outlet cylinder 110, and the first rice outlet cylinder 110 is communicated with the second rice outlet cylinder 111, and the bottom end of the rotating shaft 3 is rotatably connected with the first rice outlet cylinder 110, and the rotating shaft 3 is located on the axial section of the first rice outlet cylinder 110 and is sleeved with a sleeve 112, and a sealed bearing is provided between the sleeve 112 and the first rice outlet cylinder 110, and a ratchet structure is provided between the rotating shaft 3 and the sleeve 112, and the ratchet mechanism (not shown in the figure) includes an outer frame, a pawl and a ratchet, the pawl is elastically connected to the outer frame, the outer frame is coaxially fixed to the sleeve 112, the ratchet is coaxially fixed to the rotating shaft 3, and a third spiral leaf 113 is coaxially welded outside the sleeve 112, and the rotation direction of the third spiral leaf 113 is opposite to that of the first spiral leaf 31. When the rotating shaft 3 reverses, the sleeve 112 will be driven to rotate synchronously. At this time, the third spiral blade 113 conveys the rice seeds downward, and the rice seeds in the storage tank 1 are continuously and efficiently discharged downward through the first rice discharge cylinder 110 and the second rice discharge cylinder 111. In this way, only one power component is needed to realize turning and rapid discharge of the materials.

[0048] Furthermore, an air inlet box 130 is provided below the storage tank 1. In this embodiment, the air inlet box 130 is an annular box body, and the air inlet 13 is connected to the air inlet box 130 through a pipeline. The rice seed storage device also includes a water tank 7 pre-buried below 1.5m underground, and the temperature of the water tank 7 is maintained by the underground soil layer to prevent the water temperature in the water tank 7 from being too high due to excessive room temperature. The water tank 7 is provided with a water inlet 70 and a drain port 71 to achieve water replenishment and drainage of the water tank 7. A spiral air duct 72 is provided in the water tank 7. The spiral air duct 72 has a larger contact area than a straight pipe, thereby improving the heat exchange performance. One end of the spiral air duct 72 extends above the ground and is connected to a blower 73. A filter 730 is installed at the air inlet port of the blower 73. The other end of the spiral air duct 72 is connected to the air inlet box 130. A pressure regulating valve 14 is installed on the storage tank 1. The blower 73 and the negative pressure fan of the negative pressure impurity removal device 2 work synchronously to ensure that the ventilation volume in the storage tank 1 can be adjusted in both directions, and the upper limit of the maximum ventilation volume is increased.

[0049] The method for using the rice seed storage device comprises the following steps:

[0050] Step 1. The negative pressure impurity removal device 2 and the blower 73 are started synchronously, and the first power assembly drives the cone disk 6 to rotate, and the rice seeds are continuously transported to the storage tank 1 through the rice inlet port 10 through the belt conveyor. During the falling process of the rice seeds, under the synchronous action of the negative pressure impurity removal device 2 and the blower 73, the impurities in the rice seeds will rise with the airflow and then be discharged through the impurity discharge port; after the rice seeds are loaded, the storage height of the rice seeds does not exceed the bottom surface of the fixed disk 4, and then the rice inlet port is closed, and the negative pressure impurity removal device 2 and the blower 73 continue to work for 2 to 5 hours, so as to discharge the hot and humid air in the rice seeds;

[0051] The second step is to start the negative pressure impurity removal device 2 and the blower 73 synchronously every 5 to 8 hours, and stop working after 1 to 3 hours, that is, every fixed time, the rice seeds in the storage bin need to be dehumidified and heat removed for a period of time;

[0052] Step 3. Step 2 continues for 15 to 20 days, at which time the moisture content of the rice seeds has reached below 13%. Figure 6 As shown, the negative pressure impurity removal device 2 and the filter 730 are disassembled, and the impurity removal port 120 is connected to the air inlet port of the blower 73 through a pipeline. Every 10 to 15 hours, the blower 73 works for 1 to 3 hours and then stops. The circulating air is used to reduce the temperature in the storage tank 1 to avoid the external environment temperature being too high and affecting the quality of the rice seeds.

[0053] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work are all within the protection scope of the present invention.

Claims

1. A rice seed storage device, comprising a vertically arranged storage tank, wherein the top of the storage tank is provided with a rice inlet port, and the bottom of the storage tank is provided with a rice outlet port, characterized in that: A debris removal cylinder is provided on the top of the storage tank, and a debris removal port is provided on one side of the debris removal cylinder, and the debris removal port is connected to a negative pressure debris removal device; A rotating shaft and a first power assembly for driving the rotating shaft to rotate are coaxially installed in the storage tank; A fixed plate is provided in the storage tank, a plurality of through holes are provided on the fixed plate, a plurality of air inlets are provided at the bottom of the storage tank, and a mesh cylinder is detachably connected between the air inlets and the through holes; A cone disk is rotatably mounted on the top surface of the fixed disk, the rice inlet port is arranged opposite to the cone disk, a plurality of air outlets are arranged on the cylinder wall of the cone disk, the cone disk is coaxially fixedly connected to the rotating shaft, a gap is arranged between the periphery of the cone disk and the inner wall of the storage tank, a plurality of scrapers are arranged on the outer wall of the cone disk, and the plurality of scrapers are arranged in a circle around the center line of the cone disk; The air inlet port faces the upper part of the cone disk, the air outlet is extended along the generatrix of the cone disk, and a plurality of the air outlets are arranged in a circle around the center line of the cone disk; The shaft section of the rotating shaft between the fixed disk and the bottom of the storage tank is provided with a first spiral blade; The net cylinder is rotatably connected to the through hole and the air inlet, the fixed plate is provided with a second power assembly for driving the net cylinder to rotate, the outer periphery of the net cylinder is provided with a second spiral blade, and the second spiral blade has the same rotation direction as the first spiral blade; The second power assembly comprises a driving gear coaxially fixedly connected to the rotating shaft and a driven gear coaxially fixedly connected to the net cylinder, and the driving gear is meshed with the driven gear.

2. The rice seed storage device according to claim 1, characterized in that: The first spiral blade is provided with a plurality of sections along the axial direction of the rotating shaft, and the plurality of sections of the first spiral blade are arranged at intervals.

3. The rice seed storage device according to claim 1, characterized in that: The mesh cylinder includes a hard cylinder body and a flexible mesh sleeve, the flexible mesh sleeve is sleeved outside the hard cylinder body, the hard cylinder body includes an upper cylinder ring and a lower cylinder ring arranged coaxially, a plurality of metal rods are arranged between the opposite end faces of the upper cylinder ring and the lower cylinder ring, and the plurality of metal rods are arranged in a circle around the axis of the mesh cylinder.

4. The rice seed storage device according to claim 3, characterized in that: The top end of the second spiral leaf is fixedly connected to the upper cylinder ring, the bottom end of the second spiral leaf is fixedly connected to the lower cylinder ring, and the inner side of the second spiral leaf is spaced apart from the outer side of the flexible mesh sleeve.

5. The rice seed storage device according to any one of claims 1 to 4, characterized in that: The rice outlet port includes a first rice outlet cylinder, a second rice outlet cylinder arranged obliquely downward is connected to the side of the first rice outlet cylinder, the bottom end of the rotating shaft is rotatably connected to the first rice outlet cylinder, the rotating shaft is located on the shaft section of the first rice outlet cylinder and is sleeved with a sleeve, the sleeve is rotatably connected to the first rice outlet cylinder, a ratchet structure is provided between the rotating shaft and the sleeve, a third spiral leaf is provided outside the sleeve, and the rotation direction of the third spiral leaf is opposite to that of the first spiral leaf.

6. The rice seed storage device according to claim 5, characterized in that: An air inlet box is provided at the bottom of the storage tank, and the air inlet is connected to the air inlet box. The rice seed storage device also includes a water tank pre-buried below 1.5m underground. A spiral air duct is provided in the water tank, one end of the spiral air duct extends above the ground and is connected to a blower. A filter is installed at the air inlet port of the blower, and the other end of the spiral air duct is connected to the air inlet box. A pressure regulating valve is installed on the storage tank.

7. A method for using the rice seed storage device according to claim 6, comprising the following steps: S1. The negative pressure impurity removal device and the blower are started synchronously, the first power assembly drives the cone disk to rotate, and the rice seeds are continuously transported to the storage tank through the rice inlet port. After the rice seeds are loaded, the storage height of the rice seeds does not exceed the bottom surface of the fixed disk, and then the rice inlet port is closed, and the negative pressure impurity removal device and the blower continue to work for 2 to 5 hours; S2. Every 5 to 8 hours, the negative pressure impurity removal device and the blower are started synchronously and stopped after working for 1 to 3 hours; S3. Step S2 is continued for 15 to 20 days, the negative pressure impurity removal device and the filter are disassembled, the impurity removal port is connected to the air inlet port of the blower through a pipeline, and the blower is stopped after working for 1 to 3 hours every 10 to 15 hours.

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