Corn straw round wrapping material crushing, soil removing and drying device

Abstract

The invention relates to a crushing, soil removing and drying device for corn straw round wrapping materials, and relates to the technical field of biomass straw pretreatment. The device comprises a belt conveyor, a material uniformizing shifting wheel, a suspension type magnetic separator, a shredding machine, a centrifugal fan, an integrated soil removing and drying machine, an ultrasonic generator, a cyclone dust collector, a pulse bag type dust collector, an induced draft fan, a discharging packing auger and a finished product bin, and the material uniformizing shifting wheel and the suspension type magnetic separator are both arranged above the horizontal section of the belt conveyor; the rear end of the belt conveyor is communicated with the shredder, the sealed feeding bin is arranged on the upper portion of the shredder and communicated with the centrifugal fan, the lower portion of the shredder is communicated with the integrated soil removing and drying machine, the ultrasonic generator is arranged on the side face of the integrated soil removing and drying machine, and the integrated soil removing and drying machine is communicated with the cyclone dust collector and the pulse bag type dust collector. And the bottom of the integrated soil removing and drying machine is communicated with the discharging auger and the finished product bin. The device has the effect of combining crushing, soil removing and drying functions.

Description

Technical Field

[0001] The present application relates to the technical field of biomass straw pretreatment, and in particular to a device for crushing, removing soil and drying round bales of corn straw. Background Art

[0002] Straw is a good clean and renewable energy source, one of the most promising new energy sources, with good economic, ecological and social benefits. Traditional straw energy utilization is generally direct combustion for power generation or making biomass pellet fuel. This utilization method does not have high requirements for the soil and water content in the straw. In recent years, a straw pyrolysis and gasification technology has been developed, that is, pyrolysis and reduction reactions are carried out under high temperature conditions to convert straw into combustible gas. It has the advantages of low environmental pollution, high energy utilization efficiency, and good economic benefits. The straw gasification technology requires that the straw be made into micron-level powder and the soil adhering to and mixed in the straw be removed as much as possible to improve the gasification efficiency and gas quality. The moisture content of the raw straw reaches more than 15%, which is not conducive to grinding. Based on the above considerations, the straw must be de-soiled and dried before pyrolysis and gasification.

[0003] At present, domestic straw pretreatment systems all use split-type equipment, which requires large equipment investment and high energy consumption. Therefore, the present application provides a straw round bale pretreatment device that can take into account the three functions of crushing, soil removal, and drying. Summary of the invention

[0004] In order to combine the crushing, soil removal and drying functions to improve the subsequent gasification efficiency and fuel gas quality, the present application provides a corn stalk round bale crushing, soil removal and drying device.

[0005] The present application provides a corn stalk round bale crushing, soil removal and drying device adopts the following technical solution: A corn stalk round bale crushing, desoiling and drying device comprises a belt conveyor, a material leveling wheel, a suspended magnetic separator, a shredder, a centrifugal fan, an integrated desoiling and drying machine, an ultrasonic generator, a cyclone dust collector, a pulse bag dust collector, an induced draft fan, a discharging auger and a finished product silo, wherein the belt conveyor is arranged at the front end, the material leveling wheel and the suspended magnetic separator are both arranged above the horizontal section of the belt conveyor, the horizontal section of the belt conveyor is provided with a feed hopper, the lower end of the feed hopper is provided with a baffle, the material leveling wheel is arranged close to the baffle below the feed hopper, and the suspended magnetic separator is arranged behind the material leveling wheel The rear end of the belt conveyor is connected with the shredder, a sealed feed bin is provided on the upper part of the shredder, the sealed feed bin is connected with a centrifugal fan, the lower part of the shredder is connected with an integrated soil removal and dryer, an air collecting hood is provided on the top of the integrated soil removal and dryer, the outlet of the centrifugal fan is connected with the air collecting hood, the ultrasonic generator is arranged on the front side of the integrated soil removal and dryer, the integrated soil removal and dryer is connected with a cyclone dust collector and a pulse bag dust collector in sequence, the bottom of the terminal end of the integrated soil removal and dryer is connected with a discharging auger and a finished product bin in sequence, and the induced draft fan is connected with the pulse bag dust collector.

[0006] Preferably, the belt conveyor is an L-shaped high-angle belt conveyor, and the width of the belt conveyor is greater than the length of the straw bales.

[0007] Preferably, L-shaped levers are evenly arranged on the material leveling wheel, the distance between adjacent levers is 10 cm, the angle difference is 90°, and 15 groups of levers are arranged in total, and the levers are distributed along the width direction of the belt conveyor.

[0008] Preferably, the suspended magnetic separator is a flat plate type, and the size of the flat plate of the suspended magnetic separator covers the width direction of the belt conveyor.

[0009] Preferably, the shredder is a low-speed double-shaft shearing shredder, the upper part of the shredder is a sealed feed bin, and the lower part is provided with a sealed discharge bin.

[0010] Preferably, the integrated soil removal dryer includes a shell, a mesh belt conveyor, a fin-tube radiator, an ultrasonic vibrator, a dust hopper, a dust auger and a dust collecting trolley. The air collecting hood is arranged above the shell, and an air distribution grille is arranged at the connection between the shell and the air collecting hood. The fin-tube radiator is arranged below the air distribution grille, and the mesh belt conveyor is located below the fin-tube radiator. A plurality of air outlets are arranged on both sides of the shell, and the air outlet is located below the mesh belt conveyor. Both ends of the mesh belt conveyor are provided with inclined baffles for separating the air outlet from the fin-tube radiator, the ultrasonic generator is connected to the ultrasonic vibrator, and the ultrasonic vibrator is located below the shredder outlet. The dust hopper is connected to the lower part of the shell, the dust auger is arranged below the dust hopper, and the dust collecting trolley is arranged below the dust auger, and the tail of the shell is connected to the discharge auger.

[0011] Preferably, the fin-tube radiator adopts steel-aluminum fin tubes, a plurality of fin tubes are arranged in the fin-tube radiator, steam generated by the biomass gasification waste heat boiler passes through the inside of the fin-tube radiator, and steam outlets and steam inlets are arranged on both sides of the fin-tube radiator, and the steam outlets and steam inlets are arranged diagonally.

[0012] Preferably, the mesh conveyor belt has a width of 800-1000 mm and an aperture of 3-5 mm, and a stainless steel mesh with an aperture of no more than 50 mesh is provided on the surface of the mesh conveyor belt.

[0013] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application can separate the soil mixed with straw and mixed with straw through the ultrasonic principle, and has good dust removal effect; 2. The present application uses the hot air obtained by heat exchange of the finned tube radiator to perform penetrating drying on the straw, and the drying effect is good; 3. The integrated dryer of the present application can achieve dust removal and drying at the same time, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a corn stalk round bale crushing, soil removal and drying device in an embodiment of the present application.

[0015] Figure 2 It is a top view of the integrated soil removal and drying machine in the embodiment of the present application.

[0016] Figure 3 It is a structural schematic diagram of the material leveling wheel in the embodiment of the present application.

[0017] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0018] Figure 5 It is a schematic diagram of the structure of the air distribution grille in the embodiment of the present application.

[0019] Figure 6 It is a side view of the integrated soil removal and drying machine in the embodiment of the present application.

[0020] Explanation of the reference numerals: 1. belt conveyor; 101. feed hopper; 102. baffle; 2. material leveling wheel; 201. lever; 3. suspended magnetic separator; 4. shredder; 401. sealed feed bin; 402. sealed discharge bin; 5. centrifugal fan; 6. integrated soil removal dryer; 601. air collecting hood; 602. air outlet; 603. shell; 604. mesh belt conveyor; 605. finned tube radiator; 606. ultrasonic vibrating rod; 607. dust hopper; 608. dust auger; 609. dust collecting trolley; 6010. air distribution grille; 6011. inclined baffle; 6012. steam outlet; 6013. steam inlet; 7. ultrasonic generator; 8. cyclone dust collector; 9. pulse bag dust collector; 10. induced draft fan; 11. discharge auger; 12. finished product silo. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-6 This application is described in further detail.

[0022] The present application discloses a corn stalk round bale crushing, soil removal and drying device. Figure 1 and Figure 2 , including a belt conveyor 1, a material leveling wheel 2, a suspended magnetic separator 3, a shredder 4, a centrifugal fan 5, an integrated soil removal dryer 6, an ultrasonic generator 7, a cyclone dust collector 8, a pulse bag dust collector 9, an induced draft fan 10, a discharging auger 11 and a finished product silo 12.

[0023] Reference Figure 1 and Figure 3 , the belt conveyor 1 is arranged at the front end of the equipment. In the present embodiment, the belt conveyor 1 is an L-shaped large-angle belt conveyor. An open feed hopper 101 is arranged at the entrance of the horizontal section, and a baffle 102 is arranged below the feed hopper 101. The rest of the belt conveyor is closed. The width of the belt conveyor 1 is greater than the length of the straw round bale; the material leveling wheel 2 and the suspended magnetic separator 3 are both arranged above the horizontal section of the belt conveyor 1, and the material leveling wheel 2 is arranged close to the baffle 102 below the feed hopper 101. L-shaped levers 201 are evenly arranged on the material leveling wheel 2. The spacing between adjacent levers 201 is 10 cm, and the angle difference is 90°. There are 15 groups of levers 201, and the levers 201 are distributed along the width direction of the belt conveyor 1. The material leveling wheel 2 is driven by a servo motor with adjustable speed. An inspection port is left on the side panel of the belt conveyor where the material leveling wheel 2 is located.

[0024] Reference Figure 1The suspended magnetic separator 3 is arranged behind the material leveling wheel 2. The suspended magnetic separator 3 is a flat plate type. The size of the flat plate of the suspended magnetic separator 3 covers the width direction of the belt conveyor 1.

[0025] Reference Figure 1 The rear end of the belt conveyor 1 is connected to the shredder 4. In this embodiment, the shredder 4 is a low-speed double-axis shearing shredder 4, a sealed feed bin 401 is arranged at the upper part, and a sealed discharge bin 402 is arranged at the lower part. The sealed feed bin 401 is connected to the centrifugal fan 5, and the sealed discharge bin 402 at the lower part of the shredder 4 is connected to the integrated soil removal and drying machine 6.

[0026] Reference Figure 1 , Figure 4 and Figure 5 The integrated soil removal dryer 6 includes an air collecting hood 601, a shell 603, a mesh belt conveyor 604, a finned tube radiator 605, an ultrasonic vibrating rod 606, a dust hopper 607, a dust auger 608 and a dust collecting trolley 609. The air collecting hood 601 is arranged above the shell 603, and the air outlet 602 of the centrifugal fan 5 is connected to the air collecting hood 601. An air distribution grille 6010 is arranged at the connection between the shell 603 and the air collecting hood 601. The finned tube radiator 605 is arranged below the air distribution grille 6010. The mesh-belt conveyor 604 is located below the fin-tube radiator 605, and a plurality of air outlets 602 are provided on both sides of the shell 603. The air outlets 602 are located below the mesh-belt conveyor 604. The integrated soil removal and drying machine 6 is connected with the cyclone dust collector 8 and the pulse bag dust collector 9 in sequence through the air outlets 602, and the induced draft fan 10 is connected with the pulse bag dust collector 9; both ends of the mesh-belt conveyor 604 are provided with inclined baffles 6011 for separating the air outlet 602 and the fin-tube radiator 605.

[0027] Reference Figure 2 and Figure 4 The ultrasonic generator 7 is arranged on the front side of the integrated soil removal and drying machine 6, the ultrasonic generator 7 is connected to the ultrasonic vibration rod 606, the ultrasonic vibration rod 606 is located below the outlet of the shredder 4, the dust hopper 607 is connected to the lower part of the shell 603, the dust auger 608 is arranged at the lower part of the dust hopper 607, the dust collecting trolley 609 is arranged at the lower part of the dust auger 608, and the tail of the shell 603 is connected to the discharge auger 11 and the finished product silo 12 in sequence.

[0028] Reference Figure 4 and Figure 6The finned tube radiator 605 adopts steel-aluminum finned tubes. A plurality of finned tubes are arranged in the finned tube radiator 605. The steam generated by the biomass gasification waste heat boiler passes through the finned tube radiator 605. The finned tube radiator 605 is provided with a steam outlet 6012 and a steam inlet 6013 on both sides. The steam outlet 6012 and the steam inlet 6013 are arranged diagonally; the mesh belt conveyor belt 604 has a width of 800-1000mm and an aperture of 3-5mm. The surface of the mesh belt conveyor belt 604 is provided with a stainless steel mesh, and the aperture of the stainless steel mesh is less than 1mm.

[0029] The implementation principle of a corn stalk round bale crushing, soil removal and drying device in the embodiment of the present application is as follows: the corn stalk round bales are unpacked manually, and then the stalks are placed in a feed hopper 101 with a grass grabber, and the straw is placed in a direction perpendicular to the direction of the belt conveyor 1. The straw is stuck between the leveling wheel 2 and the baffle 102. After the leveling wheel 2 rotates, the straw is evenly pushed onto the belt conveyor 1, and the material layer height is controlled to be 20-30 cm. After the straw is evenly spread by the leveling wheel 2, it is conveyed backwards, and the suspended magnetic separator 3 at the rear end adsorbs and removes iron impurities mixed in the straw.

[0030] The spread and iron-removed straw is sent to the double-shaft shearing shredder 4 through the belt conveyor 1, and is broken by the shredder 4. The straw output size is not more than 10 cm. In addition, the soil mixed in the straw is also ground into powder by the shredder 4.

[0031] The crushed straw and soil mixture falls onto the mesh conveyor belt 604 in the integrated soil removal and drying machine 6 below. The ultrasonic vibrator 606 located below the conveyor belt emits a 20kHz high-frequency vibration, driving the conveyor belt to vibrate together, so that the straw and soil are separated and leak out through the stainless steel mesh and the mesh holes of the conveyor belt to the bottom, thereby separating the soil.

[0032] The straw after desoiling is transported to the bottom of the finned tube radiator 605. The steam (250-400℃) inside the finned tube radiator 605 comes from the waste heat boiler of biomass gasification. The centrifugal fan 5 sucks the dusty air in the double-axis shearing and tearing machine 4, blows it into the air inlet set at the top of the desoiling dryer, and evenly distributes the air through the air distribution grille 6010. After being heated by the finned tube radiator, it becomes hot air to heat and dry the straw. A baffle 102 is set between the side of the desoiling dryer and the conveyor belt to prevent the hot air from blowing the straw on the conveyor belt into the gap between the conveyor belt and the shell 603. The dust passing through the conveyor belt is sucked into the cyclone dust collector 8 and the bag dust collector at the rear end by the induced draft fan 10 through the multiple air outlets 602 arranged on both sides of the lower end of the side plate for dust removal. A small amount of dust falls into the dust hopper 607, and is transported to the dust collection trolley 609 through the dust auger 608, and can be cleaned regularly. The straw after desoiling and drying falls into the discharging auger 11 and is then sent to the finished product silo 12, thereby obtaining dry and clean straw.

[0033] To improve the drying effect and further reduce the moisture content of the straw, the mesh conveyor belt 604 can be lengthened, multiple groups / layers of finned tube radiators 605 can be added, and the motor frequency of the mesh conveyor belt 604 can be reduced, thereby extending the residence time of the hot air and the straw.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A corn stalk round bale crushing, soil removal and drying device, characterized by: The invention comprises a belt conveyor (1), a material leveling wheel (2), a suspended magnetic separator (3), a shredder (4), a centrifugal fan (5), an integrated soil removal dryer (6), an ultrasonic generator (7), a cyclone dust collector (8), a pulse bag dust collector (9), an induced draft fan (10), a discharging auger (11) and a finished product silo (12), wherein the belt conveyor (1) is arranged at the front end, the material leveling wheel (2) and the suspended magnetic separator (3) are both arranged above the horizontal section of the belt conveyor (1), the horizontal section of the belt conveyor (1) is provided with a feed hopper (101), the lower end of the feed hopper (101) is provided with a baffle (102), the material leveling wheel (2) is arranged close to the baffle (102) below the feed hopper (101), the suspended magnetic separator (3) is arranged behind the material leveling wheel (2), and the The rear end of the belt conveyor (1) is connected to the shredder (4). A sealed feed bin (401) is provided on the upper part of the shredder (4). The sealed feed bin (401) is connected to the centrifugal fan (5). The lower part of the shredder (4) is connected to the integrated soil removal and drying machine (6). An air collecting hood (601) is provided on the top of the integrated soil removal and drying machine (6). The outlet of the centrifugal fan (5) is connected to the air collecting hood (601). The ultrasonic generator (7) is arranged on the front side of the integrated soil removal and drying machine (6). The integrated soil removal and drying machine (6) is connected to the cyclone dust collector (8) and the pulse bag dust collector (9) in sequence. The bottom of the end of the integrated soil removal and drying machine (6) is connected to the discharging auger (11) and the finished product bin (12) in sequence. The induced draft fan (10) is connected to the pulse bag dust collector (9).

2. The corn stalk round bale crushing, soil removal and drying device according to claim 1 is characterized by: The belt conveyor (1) is an L-shaped belt conveyor with a large inclination angle, and the width of the belt conveyor (1) is greater than the length of the straw bales.

3. The corn stalk round bale crushing, soil removal and drying device according to claim 1 is characterized by: The material leveling wheel (2) is evenly provided with L-shaped levers (201), the spacing between adjacent levers (201) is 10 cm, the angle difference is 90°, and 15 groups of levers (201) are provided in total. The levers (201) are distributed along the width direction of the belt conveyor (1).

4. The corn stalk round bale crushing, soil removal and drying device according to claim 1 is characterized by: The suspended magnetic separator (3) is of a flat plate type, and the size of the flat plate of the suspended magnetic separator (3) covers the width direction of the belt conveyor (1).

5. The corn stalk round bale crushing, soil removal and drying device according to claim 1 is characterized by: The shredder (4) is a low-speed double-shaft shearing shredder (4). The upper part of the shredder (4) is a sealed feed bin (401), and the lower part is provided with a sealed discharge bin (402).

6. The corn stalk round bale crushing, soil removal and drying device according to claim 1, characterized in that: The integrated soil removal dryer (6) comprises a shell (603), a mesh belt conveyor (604), a fin tube radiator (605), an ultrasonic vibrating rod (606), a dust hopper (607), a dust auger (608) and a dust collecting trolley (609); the air collecting hood (601) is arranged above the shell (603); an air distribution grille (6010) is arranged at the connection between the shell (603) and the air collecting hood (601); the fin tube radiator (605) is arranged below the air distribution grille (6010); the mesh belt conveyor (604) is located below the fin tube radiator (605); and a plurality of air outlets (602) are arranged on both sides of the shell (603). ), the air outlet (602) is located below the mesh belt conveyor (604), both ends of the mesh belt conveyor (604) are provided with inclined baffles (6011) for isolating the air outlet (602) and the fin tube radiator (605), the ultrasonic generator (7) is connected to the ultrasonic vibration rod (606), the ultrasonic vibration rod (606) is located below the outlet of the shredder (4), the dust hopper (607) is connected to the lower part of the shell (603), the dust auger (608) is arranged at the lower part of the dust hopper (607), the dust collecting trolley (609) is arranged at the lower part of the dust auger (608), and the rear end of the shell (603) is connected to the discharge auger (11).

7. The corn stalk round bale crushing, soil removal and drying device according to claim 6, characterized in that: The fin-tube radiator (605) is made of steel-aluminum fin tubes. A plurality of fin tubes are arranged in the fin-tube radiator (605). Steam generated by a biomass gasification waste heat boiler passes through the fin-tube radiator (605). A steam outlet (6012) and a steam inlet (6013) are arranged on both sides of the fin-tube radiator (605). The steam outlet (6012) and the steam inlet (6013) are arranged diagonally.

8. The corn stalk round bale crushing, soil removal and drying device according to claim 6, characterized in that: The mesh conveyor belt (604) has a width of 800-1000 mm and a hole diameter of 3-5 mm. The surface of the mesh conveyor belt (604) is provided with a stainless steel mesh with a hole diameter of no more than 50 meshes.

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