A granary for prolonging the storage time of grain

Abstract

The utility model relates to the granary of prolonging grain storage time, including the grain storage bag of inside's air -tight material and the air bag frame fixed on the outside wall of grain storage bag, the grain storage bag includes the storage bag top cover, the storage bag bottom surface and the tubular sidewall of connecting storage bag top cover and storage bag bottom surface, the grain storage bag top has the feed pipe, has detachable sealing cap on the feed pipe, the air bag frame includes at least one first frame unit, the first frame unit includes the annular capsule and the vertical capsule of intercommunication annular capsule, first frame unit is connected first gas -discharging pump through first air pipe unit, the grain storage bag is connected second gas -discharging pump through second air pipe unit. The utility model discloses the granary of prolonging grain storage time, because the air in the granary is extracted, leads to the oxygen and moisture of grain metamorphic greatly reduced, can greatly prolong the storage time of grain.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, and in particular to a grain silo that extends the storage time of grain. Background Technology

[0002] Currently, grain silos are generally constructed of brick or cement concrete, requiring foundations and resulting in high construction costs. Furthermore, these silos do not completely isolate moisture, necessitating the use of drying devices at the bottom to continuously supply air, which consumes a significant amount of energy. Additionally, the grain must be removed from the silo several times a year to air-dry and prevent mold growth. All of these factors contribute to the persistently high cost of grain storage.

[0003] Vacuuming is a method to extend the shelf life of grain, but the current structure of grain silos simply cannot withstand vacuum negative pressure. If a steel tank structure is used for vacuuming, the thickness of the steel tank needs to be very thick, and the quality requirements of the steel are very high. Otherwise, the steel tank is prone to deformation or even bursting. On the other hand, the cost of steel tanks is very high, which is difficult for grain storage units to afford. Moreover, even if steel tanks are used to store grain, the amount of air extracted from the steel tank is limited, making it difficult to achieve the desired effect.

[0004] How to design a grain storage facility that can extend the storage time of grain while reducing the cost of the storage facility is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a grain silo that extends the storage time of grain, thereby solving the problems in the prior art.

[0006] To solve the above problems, the grain silo for extending grain storage time involved in this utility model adopts the following technical solution:

[0007] A grain storage silo for extending grain storage time includes a grain storage bag made of an airtight material on the inner side and an airbag frame fixed to the outer wall of the grain storage bag. The grain storage bag includes a top cover, a bottom surface, and a cylindrical sidewall connecting the top cover and the bottom surface. The top of the grain storage bag has a feed pipe with a removable sealing cap. The airbag frame includes at least one first frame unit. The first frame unit includes a horizontal annular bladder and a vertical bladder communicating with the annular bladder. The first frame unit is connected to a first inflation / deflation pump through a first air pipe unit. The grain storage bag is connected to a second inflation / deflation pump through a second air pipe unit.

[0008] Preferably, a pressure sensor and / or temperature sensor are embedded in the cylindrical sidewall of the grain storage bag.

[0009] Preferably, the airbag frame includes four independent first frame units, and the first airway unit includes four first airways, with a first solenoid valve provided on each first airway.

[0010] Preferably, the airbag frame further includes a second frame unit located below the bottommost first frame unit, the second frame unit including two annular bladders and a plurality of vertical bladders between the two annular bladders.

[0011] Preferably, it also includes a blasting and leveling mechanism, which includes a cover plate for detachably and sealingly fixed to the top of the feed pipe, a flexible air cannon duct sealed in the cover plate, a bracket fixed to the bottom of the cover plate, a geared motor fixed to the bracket, a bracket connected by a pull wire, and a bag-shaped air cannon fixed to the bracket. A winding reel is coaxially arranged on the output shaft of the geared motor. The upper end of the pull wire is fixed and wound on the winding reel. The lower end of the pull wire is connected to the bracket. The lower end of the air cannon duct is conductively connected to the bag-shaped air cannon. The bag-shaped air cannon has a solenoid valve.

[0012] Preferably, the solenoid valve is a wire-controlled solenoid valve, and the control line is connected to the wire-controlled solenoid valve through the air cannon's air guide pipe.

[0013] Preferably, the bracket includes a central cylindrical connector and a plurality of support rods rotatably mounted on the cylindrical connector from top to bottom. The bladder-shaped air cannon is fixed on the support rods, and the inner end of the support rod is detachably positioned from the cylindrical connector through a positioning structure.

[0014] Preferably, the positioning structure includes positioning holes circumferentially disposed on the cylindrical connector, positioning pins passing through the inner end of the support rod for positioning and engaging with the corresponding positioning holes, and tension springs fixed between the positioning pins and the outer surface of the inner end of the support rod, with each positioning hole located at a different height of the cylindrical connector.

[0015] This utility model relates to a grain storage silo that extends grain storage time. In use, a first inflation / deflation pump inflates the first frame unit, supporting the grain storage bag and forming an open container. This facilitates feeding and reduces wrinkles in the grain storage bag after feeding. The inflation method involves progressive inflation through the first frame units distributed from bottom to top. After the grain is loaded, the top cover of the storage bag is sealed and fixed to the upper surface of the feeding pipe. A second inflation / deflation pump then inflates the grain storage bag, reducing or eliminating wrinkles and increasing grain flowability. This allows the grain to converge more under gravity, making the shape of the grain storage bag closer to a vertical column. Then, a vacuum is drawn from the grain storage bag using the second inflation / deflation pump, causing the grain storage bag to gradually press against the surrounding grain, forming a columnar structure, or a structure with a spherical / micro-conical upper end and a columnar lower end, or an overall micro-conical structure. The specific shape depends on the shape of the bag itself. Under vacuum, the grain storage bag and grain gradually harden, forming a unified whole and providing complete support with the airbag frame. Because the air inside the grain silo is extracted, the amount of oxygen and moisture that cause the grain to spoil is greatly reduced, which can greatly extend the storage time of the grain. In addition, the grain storage bags have a certain degree of deformability. During the vacuuming process, they gradually adhere to the grain and distribute the force, unlike steel cylinders which will be damaged once deformed and may even burst. At the same time, grain storage bags do not require a foundation and are cheaper to manufacture. The overall cost is far lower than that of current brick-concrete structures and steel tank structures.

[0016] Furthermore, pressure sensors and / or temperature sensors are embedded in the cylindrical sidewalls of the grain storage bags to detect the pressure exerted on the bags and the temperature inside and outside the bags, so that timely measures can be taken before storage requirements are exceeded or the bags' tolerance limits are reached.

[0017] Furthermore, the airbag frame includes four independent first frame units, which can be inflated layer by layer from bottom to top through the first frame units to prevent the grain storage bag from becoming unstable and tipping over in the wind before or when a small amount of grain is added.

[0018] Furthermore, the airbag frame also includes a second frame unit located below the bottom first frame unit. The second frame unit includes two annular bladders and multiple vertical bladders between the two annular bladders. When the unloading is nearing completion, the second frame is supported, so that the bottom surface of the storage bag is conical under the pressure of the grain and the support of the second frame unit, which makes it easier for the suction pipe to suck up the grain.

[0019] Furthermore, it also includes a blasting and leveling mechanism. After the second inflation pump inflates the grain storage bag, the blasting and leveling mechanism can blast from bottom to top in stages to impact and vibrate the grain inside the storage bag. This causes the grain to converge more under the constraints of gravity and the storage bag, making the shape of the storage bag closer to a vertical column, and also has a leveling function.

[0020] Furthermore, the bracket includes a central cylindrical connector and multiple support rods that are rotatably mounted on the cylindrical connector from top to bottom. The bladder-shaped air cannon is fixed to the support rods, and the inner end of the support rod is detachably positioned with the cylindrical connector through a positioning structure. In this way, the bracket can be folded or unfolded like a folding fan, which facilitates the bracket's entry and exit from the feed inlet. After unfolding, it is positioned by the positioning structure to prevent the bracket from folding up during the lifting process. The design is very ingenious. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below:

[0022] Figure 1 This is a schematic diagram of the structure of a grain silo for extending the storage time of grain according to the present invention;

[0023] Figure 2 A schematic diagram showing the structure in which the bottom of the storage bag forms a cone shape under the pressure of the grain and the support of the second frame unit, so that the second frame can be erected when the unloading is nearing completion.

[0024] Figure 3 This is a schematic diagram of the blasting and liquidation mechanism;

[0025] Figure 4 This is a schematic diagram of the bracket structure in the blasting and leveling mechanism. Detailed Implementation

[0026] To make the technical objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model; that is, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown herein can generally be arranged and designed in various different configurations. Example

[0027] Grain warehouses that extend the storage time of grain, such as Figure 1-4As shown, the grain storage bag 1, made of an airtight material on the inner side, and an airbag frame fixed to the outer wall of the grain storage bag are included. The grain storage bag includes a top cover, a bottom surface 27, and a cylindrical sidewall connecting the top cover and the bottom surface. The grain storage bag is made of vulcanized fabric, such as 1414 vulcanized fabric. Alternatively, the top cover and cylindrical sidewall of the grain storage bag can be made of vulcanized fabric and the bottom surface of the storage bag can be an elastic plastic film. In this embodiment, the grain storage bag uses the former. The grain storage bag has a feed pipe 26 (not shown in the figure) at the top, a connecting flange at the top of the feed pipe, and a removable sealing cap on the feed pipe. The airbag frame includes at least one first frame unit; in this embodiment, there are four independent first frame units 2, 3, 4, and 5. Each first frame unit includes a horizontal annular bladder and a vertical bladder connecting the annular bladder. Each first frame unit is connected to a first inflation / deflation pump 16 via a first air pipe unit. Specifically, the first air pipe unit includes four first air pipes 7, 9, 11, and 13, and each first air pipe is equipped with a first solenoid valve 6, 8, 10, and 12. The grain storage bag is connected to a second inflation / deflation pump 17 via a second air pipe unit. Specifically, the second air pipe unit includes three second air pipes 19, 22, and 23 distributed from top to bottom on the grain storage bag 1, and each second air pipe is equipped with a second solenoid valve 20, 21, and 24.

[0028] In this embodiment, a pressure sensor 18 and / or a temperature sensor 25 are embedded in the cylindrical sidewall of the grain storage bag to detect the pressure exerted on the grain storage bag and the temperature inside and outside the bag, so that timely measures can be taken before storage requirements are exceeded or the bag's tolerance limits are reached. The airbag frame also includes a second frame unit 28 located below the bottom first frame unit. The second frame unit includes two annular bladders and multiple vertical bladders between the two annular bladders. The second frame unit is connected to a first venting pump 16 via a third air pipe 15, which has a third solenoid valve 14. Each first frame unit and second frame unit is equipped with a pressure sensor to monitor the air pressure so that timely intervention can be carried out if the air pressure does not meet the set requirements.

[0029] This embodiment also includes a blasting and leveling mechanism, which includes a cover plate 29 for detachable sealing and fixing to the top of the feed pipe, a flexible air cannon guide pipe 30 sealed in the cover plate, a bracket 31 fixed to the bottom of the cover plate, a geared motor 33 fixed to the bracket, a bracket connected by a pull wire 34, and a bag-shaped air cannon 35 fixed to the bracket. A winding reel 32 is coaxially mounted on the output shaft of the geared motor. The upper end of the pull wire is fixed and wound on the winding reel 32, and the lower end of the pull wire is connected to the bracket. The lower end of the air cannon guide pipe is conductively connected to the bag-shaped air cannon. The bag-shaped air cannon has a solenoid valve, which is referred to as the fourth solenoid valve in this embodiment (not shown in the figure). The fourth solenoid valve is a wire-controlled solenoid valve, and the control line is connected to the wire-controlled solenoid valve through the air cannon guide pipe. The bracket includes a central cylindrical connector 37 and multiple support rods 36 rotatably mounted on the cylindrical connector from top to bottom. A bag-shaped air cannon is fixed to the support rods. The inner ends of the support rods are detachably positioned from the cylindrical connector via a positioning structure (not shown in the figure). The positioning structure includes positioning holes circumferentially located on the cylindrical connector, positioning pins passing through the inner ends of the support rods for positioning and engaging with the corresponding positioning holes, and tension springs fixed between the positioning pins and the outer surface of the inner ends of the support rods. Each positioning hole is located at a different height on the cylindrical connector. The positioning structure is conventional technology and will not be elaborated upon here. The blasting and leveling mechanism can, after the second inflation pump inflates the grain storage bag, blast from bottom to top in stages, impacting and vibrating the grain inside the storage bag. This causes the grain to converge more under the constraint of gravity and the grain storage bag, making the shape of the grain storage bag closer to a vertical column, and also has a leveling function. The bracket includes a central cylindrical connector and multiple support rods that are rotatably mounted on the cylindrical connector from top to bottom. The bladder-shaped air cannon is fixed to the support rods. The inner end of the support rod is detachably positioned with the cylindrical connector through a positioning structure. This allows the bracket to fold or unfold like a folding fan, facilitating the entry and exit of the bracket from the feed inlet. When unfolded, it is positioned by the positioning structure to prevent the bracket from folding during the lifting process. The design is very ingenious.

[0030] In this embodiment, the grain storage silo that extends grain storage time is used by controlling the first inflation pump to inflate the first frame unit, which inflates the grain storage bag to form a container, facilitating feeding and reducing wrinkles in the grain storage bag after feeding. The inflation method is to inflate the first frame unit from bottom to top in stages. After the grain is loaded, the top cover of the storage bag is sealed and fixed to the upper surface of the feeding pipe. The second inflation pump inflates the grain storage bag, causing it to bulge and reduce or eliminate wrinkles. At the same time, it increases the fluidity of the grain, making the grain more concentrated under the constraint of gravity and making the shape of the grain storage bag closer to a vertical column. Then, the second inflation pump evacuates the grain storage bag, and the grain storage bag is gradually pressed against the grain on the outside, forming a columnar structure, or a structure with a spherical crown / micro-cone shape at the top and a columnar shape at the bottom, or a micro-cone structure overall. The specific shape is formed according to the shape of the bag itself. The grain storage bag and the grain gradually harden under vacuum, forming a whole and providing complete support with the airbag frame. Because air is extracted from the grain silo, the oxygen and moisture that cause grain spoilage are greatly reduced, significantly extending the storage time. Furthermore, the grain storage bags have a certain degree of deformability; during the vacuuming process, they gradually adhere to the grain, distributing the stress and preventing damage like steel cylinders, which are prone to bursting upon deformation. Additionally, grain storage bags do not require a foundation, resulting in lower costs; the overall cost is far lower than current brick-and-mortar structures and steel tank structures. The airbag frame includes four independent first frame units, which are inflated layer by layer from bottom to top, preventing instability and tipping in the wind before or when only a small amount of grain is added. The airbag frame also includes a second frame unit located below the bottom first frame unit. This second frame unit consists of two annular bladders and multiple vertical bladders between them. Near the end of unloading, the second frame is raised, causing the bottom of the storage bag to conical under the pressure of the grain and the support of the second frame unit, facilitating the suction pipe to remove the grain completely.

[0031] The grain storage method for extending grain storage time, as described above, includes the following steps:

[0032] Step 1: Insert the bracket of the blasting and leveling mechanism into the grain storage bag through the feed pipe of the grain storage bag. Unfold the bracket and inflate the bag-shaped air cannon. Place the cover plate and reduction motor of the blasting and leveling mechanism on the outside of the feed pipe. Control the first inflation and deflation pump to inflate the first frame unit to support the grain storage bag. The inflation pressure is 1-1.5 atmospheres. The inflation method is to inflate the first frame unit from bottom to top in stages. At the same time, load grain into the grain storage bag through the feed pipe of the grain storage bag. It should be noted that in Step 1, the second frame unit is in the deflated state and is pressed at the bottom of the grain storage bag.

[0033] Step 2: After the grain is loaded, place the geared motor into the feed pipe and seal the cover plate to the top of the feed pipe.

[0034] Step 3: Inflate the grain storage bag with air using the second inflation pump at a pressure of 1-1.5 atmospheres to make the grain storage bag bulge and reduce or eliminate wrinkles, while increasing the fluidity of the grain.

[0035] Step 4: The high-pressure air in the bag-shaped air cannon is suddenly released through the solenoid valve on the bag-shaped air cannon. The bag-shaped air cannon can be made of 1414 vulcanized cloth. The inflation pressure is greater than the inflation pressure inside the grain storage bag, reaching 2-2.5 atmospheres. This vibrates the grain with a certain degree of fluidity, making the grain more concentrated under the constraint of gravity and the grain storage bag, and making the shape of the grain storage bag closer to a vertical column. It also has a leveling function. After the bag-shaped air cannon fires at one position, the reduction motor winds the pull line through the winding reel and pulls the bracket upward, raising the bag-shaped air cannon to the next set position. Then the bag-shaped air cannon is inflated and fired a second time. Then the previous operation is repeated.

[0036] Step 5: After the bag-shaped air cannon fires multiple times to level the chamber, fold the firing and leveling mechanism out of the feed pipe.

[0037] Step 6: Seal and fix the top cover of the storage bag to the upper surface of the feed pipe. Use the second inflation / deflation pump to draw a vacuum from inside the grain storage bag. The negative pressure is -0.05MPa to -0.2MPa. Gradually press the grain storage bag against the grain on the outside.

[0038] In step 1, the moisture content of the grain added to the grain storage bag is controlled between 12% and 14%, and the grain is sterilized by infrared sterilization before being added to the grain storage bag. Infrared sterilization can be achieved by installing infrared sterilization lamps above the grain conveyor belt.

[0039] In step 6, the process of vacuuming the grain storage bag using the second inflation / deflation pump is as follows: the second inflation / deflation pump 17 vacuums the grain storage bag through three second air pipes 19, 22, and 23, in the order of top to bottom. First, the upper part is vacuumed to shape the upper part of the grain storage bag, then the middle part is vacuumed, and finally the lower part is vacuumed. When the pressure approaches the set negative pressure value, the upper, middle, and lower parts are vacuumed together to balance the overall negative pressure and prevent the top-heavy structure from affecting the stability of the grain storage bag.

[0040] Finally, it should be noted that the above embodiments are only for illustration and not for limiting the technical solutions of this utility model. Any equivalent substitutions and modifications or partial substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. A grain silo for extending grain storage time, characterized in that: The invention comprises a grain storage bag made of an airtight material on the inner side and an airbag frame fixed to the outer wall of the grain storage bag. The grain storage bag includes a top cover, a bottom surface, and a cylindrical sidewall connecting the top cover and the bottom surface. The top of the grain storage bag has a feed pipe with a removable sealing cap. The airbag frame includes at least one first frame unit. The first frame unit includes a horizontal annular bladder and a vertical bladder communicating with the annular bladder. The first frame unit is connected to a first inflation / deflation pump through a first air pipe unit. The grain storage bag is connected to a second inflation / deflation pump through a second air pipe unit.

2. The grain silo for extending grain storage time according to claim 1, characterized in that: Pressure sensors and / or temperature sensors are embedded in the cylindrical sidewall of the grain storage bag.

3. The grain silo for extending grain storage time according to claim 1, characterized in that: The airbag frame includes four independent first frame units, and the first airway unit includes four first airways, with a first solenoid valve provided on each first airway.

4. The grain silo for extending grain storage time according to any one of claims 1-3, characterized in that: The airbag frame also includes a second frame unit located below the bottommost first frame unit. The second frame unit includes two annular bladders, one above the other, and a plurality of vertical bladders between the two annular bladders.

5. The grain silo for extending grain storage time according to claim 4, characterized in that: It also includes a blasting and leveling mechanism, which includes a cover plate for detachably and sealingly fixed to the top of the feed pipe, a flexible air cannon duct sealed in the cover plate, a bracket fixed to the bottom of the cover plate, a geared motor fixed on the bracket, a bracket connected by a pull wire, and a bag-shaped air cannon fixed on the bracket. A winding reel is coaxially arranged on the output shaft of the geared motor. The upper end of the pull wire is fixed and wound on the winding reel. The lower end of the pull wire is connected to the bracket. The lower end of the air cannon duct is conductively connected to the bag-shaped air cannon. The bag-shaped air cannon has a solenoid valve.

6. The grain silo for extending grain storage time according to claim 5, characterized in that: The solenoid valve is a wire-controlled solenoid valve, and the control line is connected to the wire-controlled solenoid valve through the air cannon's air guide pipe.

7. The grain silo for extending grain storage time according to claim 6, characterized in that: The bracket includes a central cylindrical connector and multiple support rods that are rotatably mounted on the cylindrical connector from top to bottom. The bladder-shaped air cannon is fixed on the support rods, and the inner end of the support rod is detachably positioned from the cylindrical connector through a positioning structure.

8. The grain silo for extending grain storage time according to claim 7, characterized in that: The positioning structure includes positioning holes arranged circumferentially on the cylindrical connector, positioning pins passing through the inner end of the support rod for positioning and engaging with the corresponding positioning holes, and tension springs fixed between the positioning pins and the outer surface of the inner end of the support rod. Each positioning hole is located at a different height of the cylindrical connector.

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