Grain storage system

Abstract

The utility model relates to the technical field of grain storage, in particular to a grain storage system. Comprising a grain unloading unit, a conveying unit, a lifting unit, a cleaning unit and a silo unit. The cleaning unit comprises a cleaning sieve, an air suction separator and an iron remover which are connected in sequence, and further comprises a dust removal fan, a second pulse dust remover and a cyclone dust collector which are connected in sequence; a connecting pipe is arranged at the top of the cleaning sieve; an air inlet of the cyclone dust collector is respectively connected with an air outlet of the air suction separator and the connecting pipe of the cleaning sieve; each silo unit comprises a plurality of silos which are linearly arranged, and ventilation mechanisms are arranged at the lower parts of the silos; and the second conveyor is positioned above the silo and is provided with a plurality of unloading points opposite to the feed port of the silo. The cleaning sieve is connected with the cyclone dust collector, so that the interior of the cleaning sieve is kept in a negative pressure state, dust is prevented from overflowing, the dust sequentially passes through the air suction separator and the iron remover and then passes through the second elevator and the second conveyor to be conveyed into the silo, the ventilation mechanism adjusts the temperature in the silo, and the grains are prevented from going bad.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, and specifically relates to a grain storage and warehousing system. Background Art

[0002] As a typical type of warehouse in China's grain storage and logistics, silos are widely used for their high degree of mechanization and automation. The grain inlet and outlet process of silos is different from that of traditional flat warehouses. The cost of mechanized silos is generally about one-third higher than that of mechanized warehouse buildings, but it can shorten the loading and unloading process of materials, reduce operation and maintenance costs, eliminate heavy bagging operations, and is conducive to mechanized and automated operations. Therefore, it has become one of the main forms of granaries. To improve the efficiency of grain inlet and outlet of silos, unloading stations, working towers and other auxiliary grain inlet and outlet facilities are generally equipped. The currently common grain inlet and outlet process of silos is unloading, lifting, warehousing, and outloading and distribution.

[0003] The prior art 202022292858.3 discloses a clean grain inlet and outlet silo system; in the unloading process, a vehicle tipping device and a receiving hopper are used; in the lifting process, a bucket elevator is used; the cleaning process includes magnetic separation, primary cleaning and secondary cleaning; in the metering process, a non-continuous cumulative type bulk grain scale with relatively high precision is used; in the warehousing process, an intermediate multi-point discharging device and a grain crushing reduction device are used; in the outloading and distribution process, it includes discharging from the side wall grain outlet of the silo and discharging from the bottom grain outlet of the silo; although it effectively solves the problem of the unloading efficiency of different vehicle types of grain, and also has a good control over the quality and quantity of the warehoused grain, after the grain enters the silo, the grain accumulates heat. The existing vertical silo ventilation is natural wind ventilation for cooling, and its ventilation and cooling speed is slow. The lowest temperature is close to the outdoor temperature and changes with the outdoor temperature, and it cannot reach the optimal storage temperature of grains in real time, which easily leads to mildew and deterioration of grains; and although the cleaning screen has a closed structure during use, during the vibration working process, voids will be generated in the box body over time, resulting in dust overflow during the working process. Summary of the Utility Model

[0004] The utility model aims to solve the above problems, and thus provides a grain storage and warehousing system capable of adjusting the storage temperature.

[0005] The technical solution adopted by the utility model to solve the above problems is:

[0006] A grain storage and warehousing system includes a grain unloading unit, a conveying unit, a lifting unit, a cleaning unit and a silo unit;

[0007] The grain unloading unit includes a hydraulic tipping plate and a discharging hopper. The hydraulic tipping plate drives the grain transport vehicle to tip backward, and pours the grain in the transport vehicle into the discharging hopper;

[0008] The conveying unit includes a first conveyor and a second conveyor. The first conveyor is located below the discharge hopper and is used to receive the material falling from the discharge hopper.

[0009] The lifting unit includes a first elevator and a second elevator. The feeding end of the first elevator is connected to the discharging section of the first conveyor.

[0010] The cleaning unit includes a cleaning sieve, an air suction separator, and a magnetic separator connected in sequence, and also includes a dust removal fan, a second pulse dust collector, and a cyclone connected in sequence.

[0011] The feeding end of the cleaning sieve is connected to the discharging end of the first elevator. The discharging end of the magnetic separator is connected to the feeding end of the second elevator. The discharging end of the second elevator is connected to the second conveyor. A connecting pipe is provided at the top of the cleaning sieve. The air inlet of the cyclone is respectively connected to the air outlet of the air suction separator and the connecting pipe of the cleaning sieve.

[0012] The silo unit includes a number of silos arranged in a straight line, and a ventilation mechanism is provided at the lower part of the silo.

[0013] The second conveyor is located above the silo and is provided with a plurality of discharging points opposite to the feeding ports of the silos.

[0014] The utility model adopting the above technical solution, compared with the prior art, its prominent feature is:

[0015] The hydraulic tipping plate is lifted to pour the grain in the grain transport vehicle into the discharge hopper. The first conveyor and the first elevator send the grain into the cleaning sieve. The cleaning sieve is connected to the cyclone, so that a negative pressure state is maintained inside the cleaning sieve. Even if there are gaps in the cleaning sieve box body itself, air will be sucked in through the gaps due to the negative pressure, preventing dust from overflowing. Then it passes through the air suction separator and the magnetic separator in sequence, and then through the second elevator and the second conveyor to be transported to the silo. The ventilation mechanism adjusts the temperature in the silo to prevent the grain from deteriorating.

[0016] As a preference, a further technical solution of the utility model is:

[0017] Further, a steel grating plate is provided at the entrance of the discharge hopper. A number of cross beams are provided below the steel grating plate at the entrance of the discharge hopper. A number of rotating shafts are respectively rotatably connected between adjacent cross beams and between the cross beam and the inner wall of the adjacent discharge hopper. A V-shaped dust baffle is buckled on the rotating shaft, and a material falling gap is left between adjacent dust baffles.

[0018] Further, a first pulse dust collector is provided on one side of the discharge hopper.

[0019] Further, the ventilation mechanism includes air dispersion pipes radially arranged on the inner side surface of the lower cone of the silo, an annular air collecting pipe is arranged on the outer periphery of the silo, a wind blocking partition plate is arranged in the air collecting pipe, an air inlet elbow communicating with the air dispersion pipes is arranged on the air collecting pipe, a reducing elbow is connected to the inlet of the air collecting pipe, and a ventilator is connected to the end of the reducing pipe.

[0020] Further, a dust cleaning port is opened at the bottom of the air collecting pipe.

[0021] Further, a temperature measuring cable is arranged in the silo. Description of the Drawings

[0022] Figure 1 is the front view structural schematic diagram of the embodiment of the present utility model;

[0023] Figure 2 is the front view structural schematic diagram of the discharge hopper of the embodiment of the present utility model;

[0024] Figure 3 is the side view structural schematic diagram of the discharge hopper of the embodiment of the present utility model;

[0025] Figure 4 is the front view structural schematic diagram of the air collecting pipe of the embodiment of the present utility model;

[0026] Figure 5 is the top view structural schematic diagram of the air collecting pipe of the embodiment of the present utility model;

[0027] Figure 6 is the front view sectional structural schematic diagram of the lower part of the silo of the embodiment of the present utility model;

[0028] Figure 7 is the top view structural schematic diagram of the lower part of the silo of the embodiment of the present utility model;

[0029] In the figure, the markings are: hydraulic tipping plate 1, discharge hopper 2, first conveyor 3, second conveyor 4, first elevator 5, second elevator 6, cleaning screen 7, air suction separator 8, iron remover 9, dust removal fan 10, second pulse dust collector 11, cyclone 12, silo 13, steel grating 21, cross beam 22, rotating shaft 23, dust blocking plate 24, first pulse dust collector 25, air dispersion pipe 31, air collecting pipe 32, wind blocking partition plate 33, ventilator 34, dust cleaning port 35, temperature measuring cable 36, reducing elbow 37. Detailed Embodiments

[0030] The present utility model will be further described below in conjunction with embodiments, and the purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0031] A grain storage system includes a grain unloading unit, a conveying unit, a lifting unit, a cleaning unit and a silo unit.

[0032] The grain unloading unit includes a hydraulic tipping plate 1 and a discharge hopper 2. The hydraulic tipping plate 1 drives the grain transport vehicle to tip backward, pouring the grain in the vehicle into the discharge hopper 2.

[0033] The conveying unit includes a first conveyor 3 and a second conveyor 4. The first conveyor 3 is located below the discharge hopper 2 and is used to receive the falling material from the discharge hopper 2.

[0034] The lifting unit includes a first elevator 5 and a second elevator 6. The feeding end of the first elevator 5 is connected to the discharging section of the first conveyor 3.

[0035] The cleaning unit includes a cleaning sieve 7, an air suction separator 8, and a magnetic separator 9 connected in sequence, and also includes a dust removal fan 10, a second pulse dust collector 11, and a cyclone 12 connected in sequence.

[0036] The feeding end of the cleaning sieve 7 is connected to the discharging end of the first elevator 5. The discharging end of the magnetic separator 9 is connected to the feeding end of the second elevator 6. The discharging end of the second elevator 6 is connected to the second conveyor 4. A connecting pipe is provided at the top of the cleaning sieve 7. The air inlet of the cyclone 12 is respectively connected to the air outlet of the air suction separator 8 and the connecting pipe of the cleaning sieve 7.

[0037] The silo unit includes a number of silos 13 arranged in a straight line. A ventilation mechanism 34 is provided at the lower part of the silo 13 to adjust the temperature inside the silo 13.

[0038] The second conveyor 4 is located above the silo 13 and is provided with a plurality of discharging points opposite to the feeding ports of the silos 13.

[0039] Further, a steel grating plate 21 is provided at the entrance of the discharge hopper 2. A number of cross beams 22 are provided at the entrance of the discharge hopper 2 and below the steel grating plate 21. A number of rotating shafts 23 are rotatably connected between adjacent cross beams 22 and between the cross beam 22 and the inner wall of the adjacent discharge hopper 2. The rotating shafts 23 are perpendicular to the cross beams 22. A V-shaped dust baffle 24 is buckled on the rotating shafts 23. A blanking gap is left between adjacent dust baffles 24. The steel grating plate 21 first removes large chunks of impurities in the grain and initially controls the grain flow rate. The rotatable dust baffle 24 further controls the grain flow rate and prevents most of the dust in the discharge hopper 2 from overflowing.

[0040] Further, a first pulse dust collector 25 is provided on one side of the discharge hopper 2. The first pulse dust collector 25 cooperates with the dust baffle 24 to suppress the dust in the grain unloading unit.

[0041] Furthermore, the ventilation mechanism 34 includes a dispersion air duct 31 radially arranged on the inner side surface of the lower cone of the silo 13. An annular air collecting duct 32 is arranged on the outer periphery of the silo 13. A wind baffle partition 33 is arranged inside the air collecting duct 32. An air inlet elbow communicating with the dispersion air duct 31 is arranged on the air collecting duct 32. A reducing elbow 37 is connected to the inlet of the air collecting duct 32. The end of the reducing pipe is connected to a ventilator 34. A large amount of high-pressure cold air flows into the dispersion air duct 31 through the air collecting duct 32 and enters the interior of the materials at the bottom of the cone of the silo 13, and then flows upward, so as to achieve the purpose of cooling the materials inside the vertical silo 13. The inlet of the air collecting duct 32 adopts a reducing elbow 37 for transition, reducing the air resistance, making the air inlet transition smooth, improving the ventilation efficiency, and prolonging the service life of the ventilator 34.

[0042] Furthermore, a dust cleaning port 35 is opened at the bottom of the air collecting duct 32. The dust cleaning port 35 is located at the tail of the air flow moving along the circumferential direction in the air collecting duct 32. The dust cleaning port 35 discharges the dust that has fallen into the air collecting duct 32 through the dispersion air duct 31.

[0043] Furthermore, a temperature measuring cable 36 is arranged inside the silo 13 to monitor the temperature inside the silo 13 in real time.

[0044] The hydraulic tipping plate 1 is lifted to pour the grain in the grain transport vehicle into the discharge hopper 2. The first conveyor 3 and the first elevator 5 send the grain into the cleaning sieve 7. The cleaning sieve 7 is connected to the cyclone 12, keeping the interior of the cleaning sieve 7 in a negative pressure state. Even if there are gaps in the cleaning sieve 7 box body itself, air will be sucked in through the gaps due to the negative pressure, preventing dust from overflowing. Then it passes through the air suction separator 8 and the iron remover 9 in sequence, and then is transported to the silo 13 through the second elevator 6 and the second conveyor 4. The ventilation mechanism 34 adjusts the temperature inside the silo 13 to prevent the grain from deteriorating.

[0045] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention accordingly. All equivalent changes made by using the content of the specification and drawings of the present invention are included in the scope of rights of the present invention.

Claims

1. A grain storage system, characterized in that: It includes a grain unloading unit, a conveying unit, a lifting unit, a cleaning unit and a silo unit; The grain unloading unit includes a hydraulic tipping plate and a discharge hopper. The hydraulic tipping plate drives the grain transport vehicle to tip backward, pouring the grain in the vehicle into the discharge hopper; The conveying unit includes a first conveyor and a second conveyor. The first conveyor is located below the discharge hopper and is used to receive the falling material from the discharge hopper; The lifting unit includes a first elevator and a second elevator. The feeding end of the first elevator is connected to the discharging section of the first conveyor; The cleaning unit includes a cleaning sieve, an air suction separator and a magnetic separator connected in sequence, and also includes a dust removal fan, a second pulse dust collector and a cyclone connected in sequence; The feeding end of the cleaning sieve is connected to the discharging end of the first elevator. The discharging end of the magnetic separator is connected to the feeding end of the second elevator. The discharging end of the second elevator is connected to the second conveyor. A connecting pipe is provided at the top of the cleaning sieve. The air inlet of the cyclone is respectively connected to the air outlet of the air suction separator and the connecting pipe of the cleaning sieve; The silo unit includes a number of silos arranged in a straight line, and a ventilation mechanism is provided at the lower part of the silo; The second conveyor is located above the silos and is provided with a plurality of discharging points opposite to the feeding ports of the silos.

2. The grain storage system according to claim 1, wherein: A steel grating plate is provided at the entrance of the discharge hopper. A number of cross beams are provided at the entrance of the discharge hopper and below the steel grating plate. A number of rotating shafts are respectively rotatably connected between adjacent cross beams and between the cross beam and the inner wall of the adjacent discharge hopper. A V-shaped dust baffle is buckled on the rotating shaft, and a material falling gap is left between adjacent dust baffles.

3. The grain storage system according to claim 2, characterized in that: A first pulse dust collector is provided on one side of the discharge hopper.

4. The grain storage system according to claim 1, wherein: The ventilation mechanism includes a radial air distribution pipe arranged on the inner side surface of the lower cone of the silo. An annular air collecting pipe is arranged on the outer periphery of the silo. A wind blocking partition is arranged in the air collecting pipe. An air inlet elbow communicating with the air distribution pipe is arranged on the air collecting pipe. A reduced-diameter elbow is connected to the entrance of the air collecting pipe, and a ventilator is connected to the end of the reduced-diameter pipe.

5. The grain storage system according to claim 4, characterized in that: A dust cleaning port is opened at the bottom of the air collecting pipe.

6. The grain storage system according to claim 1, wherein: A temperature measuring cable is arranged in the silo.

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