Vertical stirring bin for grain particles

Abstract

The invention discloses a vertical grain stirring bin, and belongs to the technical field of stirring bins, the vertical grain stirring bin comprises a support, a bin, a conveying assembly, a driving assembly and a drying assembly, the drying assembly comprises a fan, a first working pipe, an air distribution pipe, a heater and a control box, the air distribution pipe is arranged in the bin, and a plurality of air distribution branch pipes are arranged on the air distribution pipe; duckbilled sleeves are connected to the air distribution branch pipes, each duckbilled sleeve comprises a duckbilled film, the duckbilled films are folded under the elastic action of the duckbilled films when no pressure exists in the air distribution pipes, and when the air pressure in the air distribution pipes is gradually increased, the duckbilled films are gradually opened, so that airflow in the air distribution pipes enters the stock bin. Hot air flow can conveniently enter the stock bin, and grain particles are prevented from entering the air distribution pipe; rotating airflow is formed in the stock bin, hot airflow makes contact with grain particles for a long time and makes contact with the grain particles sufficiently, drying is uniform, and the drying effect is good; after the air distribution pipe vibrates, grain particles can be vibrated off, and the grain particles are prevented from being accumulated on the air distribution pipe or a gap between the air distribution pipe and the inner wall of the stock bin.

Description

Technical Field

[0001] The invention belongs to the technical field of mixing bins, and in particular relates to a vertical mixing bin for grain particles. Background Art

[0002] A mixing silo is a silo with a mixing and mixing function. Granules or powders are put into a hopper connected to the silo. The materials in the hopper are transported to the upper end of the silo through the spiral main shaft in the silo. After the materials fall, they are transported up through the spiral conveyor and continue to stir in a cycle, so as to achieve the purpose of uniform mixing. When using existing mixing silos for grains, some grains have a high moisture content and cannot be dried in the silo. They need to be dried separately before being put into the hopper, which affects the mixing efficiency. The existing mixing silos with drying functions generally enter the mixing silo through an air duct, and the outlet end of the air duct is downward. The drying airflow is discharged directly upward from the vent on the top wall of the mixing silo after it goes downward. The contact time with the grain particles is short, and the drying effect is poor. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a vertical mixing bin for grain particles, which can evenly dry the grain particles and prevent the grain particles from entering the drying pipe.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A vertical mixing bin for grain particles comprises a bracket, a silo arranged on the bracket, a conveying assembly arranged in the silo, a driving assembly connected to the conveying assembly, and a drying assembly arranged on the bracket and connected to the silo, the drying assembly comprising a fan, a first working pipe connected to an outlet end of the fan, an air distribution pipe connected to the first working pipe, a heater arranged on the first working pipe, and a control box electrically connected to the fan and the heater, the air distribution pipe is arranged in the silo, a plurality of air distribution branch pipes are arranged on the air distribution pipe, a duckbill sleeve is connected to the air distribution branch pipe, the duckbill sleeve comprises a duckbill membrane, the duckbill membrane is closed by its own elastic action when there is no pressure inside the air distribution pipe, and the duckbill membrane is gradually opened when the wind pressure in the air distribution pipe gradually increases, so that the airflow in the air distribution pipe enters the silo.

[0006] Preferably, the air distribution pipe is an annular pipe, and the multiple air distribution branch pipes are distributed in an annular array on the air distribution pipe.

[0007] Preferably, the air distribution duct is movably connected to the first working tube via a flexible tube, and the air distribution duct is movably connected to the inner wall of the silo via a plurality of springs.

[0008] Preferably, the conveying assembly includes an intermediate shaft, a spiral blade arranged on the intermediate shaft, and a first tube shell mounted outside the spiral blade, the first tube shell is connected to the inner wall of the silo through a support rod, the bottom of the silo is provided with a second tube shell mounted outside the spiral blade, the second tube shell is connected to a feed hopper connected thereto, and the side wall of the silo is connected to a discharge pipe.

[0009] Preferably, after the conveying component finishes working, the fan pulses to generate a pulsed airflow, and the pulsed airflow drives the air distribution duct to vibrate.

[0010] Preferably, the driving assembly includes a driving motor, a driving wheel connected to the driving motor, a pulley arranged on the intermediate shaft, and a belt connected between the driving wheel and the pulley.

[0011] Preferably, the silo is connected to a filter assembly via an air outlet pipe, the filter assembly comprises a working box and a filter cartridge disposed in the working box, and the working box is connected to an exhaust pipe.

[0012] Preferably, the first working pipe is connected to the working box through a second working pipe, a first shut-off valve is provided on the first working pipe, a second shut-off valve is provided on the second working pipe, and a third shut-off valve is provided on the exhaust pipe.

[0013] Preferably, the first shut-off valve, the second shut-off valve and the third shut-off valve are all electrically connected to the control box.

[0014] Preferably, the filter cartridge comprises an outer cartridge, a filter bag disposed in the outer cartridge, and an inner cartridge disposed in the filter bag.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0016] 1. By setting a drying component, using a fan and a heater, the heated airflow is sent into the silo, and the grain particles are dried by the hot airflow. The air distribution pipe, air distribution branch pipe and duckbill sleeve are set. The duckbill sleeve has a one-way cutoff effect, which facilitates the hot airflow to enter the silo and prevents the grain particles from entering the air distribution pipe;

[0017] 2. The air distribution branches are distributed in a circular array, forming a rotating airflow in the silo. The hot airflow has a long and sufficient contact time with the grain particles, and the drying is uniform and the drying effect is good;

[0018] 3. The air distribution pipe is movably connected to the first working pipe through a flexible pipe, and the air distribution pipe is also movably connected to the inner wall of the silo through multiple springs. When the conveying component finishes working, the fan pulses to generate pulse airflow, which drives the air distribution pipe to vibrate. After the air distribution pipe vibrates, it can shake off the grain particles to prevent the grain particles from accumulating on the air distribution pipe or accumulating in the gap between the air distribution pipe and the inner wall of the silo;

[0019] 4. A filter assembly with a filter cartridge is provided to filter the air discharged from the silo. The filter assembly is connected to the fan through the second working pipe. The airflow of the fan can be used to backwash the filter bag to ensure the filtering effect of the filter bag and extend the service life of the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0021] Figure 2 1. It is a schematic diagram of the silo structure in the embodiment;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 Schematic diagram of the air distribution duct structure in the embodiment;

[0024] Figure 5 2 is a schematic diagram of the duckbill casing structure in the embodiment;

[0025] Figure 6 This is a schematic diagram of the structure of the filter assembly in the embodiment;

[0026] Figure 7 Schematic diagram of the filter cartridge structure in the embodiment. DETAILED DESCRIPTION

[0027] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] like Figure 1 As shown, a vertical mixing bin for grain particles includes a bracket 1, a silo 2, a conveying assembly 3, a driving assembly 4 and a drying assembly 5. The bracket 1 includes a base and four supporting legs. The silo 2 is arranged on the bracket 1. The four supporting legs are connected to the outer wall of the silo 2 and extend upward to the top of the outer wall of the silo 2 to fix the silo 2. The silo 2 is a cylindrical silo with a cylindrical upper end and an inverted cone lower end.

[0029] like Figure 1 and Figure 2As shown, the conveying assembly 3 is arranged in the silo 2, and the conveying assembly 3 includes an intermediate shaft 31, a spiral blade 32 and a first tube shell 33. The intermediate shaft 31 passes through the silo 2 from top to bottom. The lower end of the inverted cone-shaped silo body of the silo 2 is provided with a second tube shell 21 corresponding to the intermediate shaft 31. The spiral blade 32 is arranged on the intermediate shaft 31. The spiral blade 32 extends upward from the bottom end of the intermediate shaft 31 to a certain distance from the inner top wall of the silo 2. The first tube shell 33 is sleeved outside the spiral blade 32. The first tube shell 33 is connected to the inner wall of the silo 2 through a plurality of support rods 34. The upper and lower ends of the first tube shell 33 are both open. A certain distance is left between the lower end of the first tube shell 33 and the upper end of the second tube shell 21, and the upper end height of the first tube shell 33 is lower than the upper end height of the spiral blade 32. The driving assembly 4 is connected to the conveying assembly 3, and the driving assembly 4 includes a driving motor 41, a driving wheel 42, a pulley 43 and a belt 44. The driving motor 41 is connected to the supporting leg of the bracket 1 near the top of the silo 2, the driving wheel 42 is connected to the driving motor 41, and the intermediate shaft 31 passes through the top wall of the silo 2 and is connected to the pulley 43. The pulley 43 and the driving wheel 42 are at the same height. The belt 44 is connected between the driving wheel 42 and the pulley 43. When the driving motor 41 is working, the pulley 43 is driven to rotate by the belt 44, thereby driving the intermediate shaft 31 to rotate. The second tube shell 21 is connected to a feed hopper 6, and an inlet is provided on the side of the second tube shell 21 to communicate with the feed hopper 6. Grain particles such as granular material or powder are poured into the second tube shell 21 from the feed hopper 6. Driven by the driving motor 41, the spiral blades 32 drive the grain particles upward into the silo 2. After accumulation, the grain particles continue to move upward under the conveying action of the spiral blades 32 and the first tube shell 33, and finally fall in an umbrella shape from the top of the first tube shell 33. A discharge pipe 22 and a return pipe 23 are connected to the side wall of the silo 2. The heights of the discharge pipe 22 and the return pipe 23 are lower than the height of the lower end of the first tube shell 33. The outlet of the return pipe 23 is located on the feed hopper 6. Part of the grain particles return to the feed hopper 6 through the return pipe 23 and continue to be conveyed and stirred, thereby completing the stirring and mixing of the grain particles. When discharge is required, the outlet of the return pipe 23 is opened, and part of the fallen grain particles are discharged from the discharge pipe 22.

[0030] like Figure 1 and Figure 2As shown, the drying component 5 is arranged on the bracket 1, and the drying component 5 includes a fan 51, a first working tube 52, a heater 53, a control box 54 and an air distribution duct 56. The fan 51 is connected to the bracket 1, and the outlet end of the fan 51 is connected to the first working tube 52. The air distribution duct 56 is connected to the first working tube 52. The air distribution duct 56 is located in the silo 2. The air distribution duct 56 is located in the middle of the silo 2 and its height is lower than the height of the upper end of the first tube shell 33. The heater 53 adopts an electric heater. The heating tube of the heater 53 is located in the first working tube 52 so as to heat the air flowing through the tube. The control box 54 is connected to the bracket 1. The fan 51 and the heater 53 are both electrically connected to the control box 54, so that the operation of the fan 51 and the heater 53 is controlled by the switch in the control box 54. When the fan 51 and the heater 53 are working, there is airflow in the first working tube 52, and the heated airflow enters the air distribution duct 56. The control box 54 is provided with a motor control speed regulator connected to the fan 51 for controlling the operation of the fan 51. The motor control speed regulator adopts an existing speed regulator, such as the M590 series universal vector inverter of the DOCHQH brand, with power phase number: three-phase, control mode: voltage vector, and output voltage regulation mode PWM control.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the air distribution duct 56 is an annular tube, and is movably connected to the first working tube 52 via a flexible tube 59 . The middle tube body of the flexible tube 59 is made of canvas, so that the air distribution duct 56 is flexibly connected to the first working tube 52 . The air distribution pipe 56 is provided with a plurality of air distribution branch pipes 57, which are connected to the inner circle side wall of the air distribution pipe 56, and are distributed in a circular array on the air distribution pipe 56. A duckbill sleeve 58 is connected to the outlet end of the air distribution branch pipe 57, and the duckbill sleeve 58 is made of silicone material. The duckbill sleeve 58 includes a duckbill membrane 581. The duckbill membrane 581 closes by its own elasticity when there is no pressure inside the air distribution pipe 56, thereby closing the outlet end of the air distribution branch pipe 57. When the fan 51 is working, the airflow enters the air distribution pipe 56 from the first working pipe 52. When the wind pressure in the air distribution pipe 56 gradually increases, the duckbill membrane 581 gradually opens to allow the airflow in the air distribution pipe 56 to enter the silo 2. Since the air distribution branch pipes 57 are distributed in a circular array, the airflow ejected by the duckbill membrane 581 forms a rotating airflow in the silo 2 when the fan 51 is working. The air distribution duct 56 is movably connected to the inner wall of the silo 2 by a plurality of springs 561. The inner wall of the silo 2 is provided with a plurality of support rods 562. The support rods 562 are round rods with a smaller diameter. In this embodiment, the support rods 562 have a diameter of 2 mm. The springs 561 are connected to the support rods 562. The upper ends of the springs 561 are connected to the lower ends of the outer walls of the air distribution duct 56 to support the air distribution duct 56. The air distribution duct 56 is a thin-walled stainless steel round tube with a light weight. A plurality of support rods 562 can support the air distribution duct 56. Since the diameter of the support rods 562 is small, which is smaller than the diameter of most grain particles, grain particles will not accumulate on the support rods 562. Since the air distribution duct 56 is connected to the support rods 562 by the springs 561, the air distribution duct 56 can shake. Since the air distribution duct 56 is movably connected to the first working tube 52 by the flexible tube 59, the air distribution duct 56 can also produce a certain displacement in the radial direction.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when the conveying component 3 is working, it drives the grain particles to fall from the top of the first tube shell 33 in an umbrella shape. At this time, the drying component 5 is working at the same time. The fan 51 works normally to send wind into the first working tube 52. The hot air flow heated by the heater 53 enters the air distribution pipe 56, and is sprayed into the duckbill sleeve 58 into the silo 2. The air flow rotates and dries the falling grain particles upward. The rotating upward air flow is in full contact with the grain particles, and the drying effect is good. A vent is provided on the top wall of the silo 2, and the upward air flow is discharged from the vent. When the conveying component 3 finishes working, the grain particles may accumulate on the air distribution pipe 56 or accumulate on the gap between the air distribution pipe 56 and the inner wall of the silo 2 during the falling process. At this time, the fan 51 works in pulses to generate pulse airflow, and the pulse airflow drives the air distribution pipe 56 to vibrate. The fan pulse refers to controlling the fan to start and stop by the motor control speed regulator to generate pressure fluctuations of the air flow, forming a pulse airflow to produce airflow impact on the air distribution pipe 56, thereby causing the air distribution pipe 56 to vibrate. After the air distribution pipe 56 vibrates, the grain particles can be shaken off to prevent the grain particles from accumulating on the air distribution pipe 56 or accumulating in the gap between the air distribution pipe 56 and the inner wall of the silo 2. The fan 51 adopts an existing vortex blower, such as the KRB-510S-2 high-pressure vortex blower of Shanghai Keruibo, with a power of 1100W, a maximum fan pressure of 16kpa, and a maximum air volume of 210m 3 / h.

[0033] like Figure 1 , Figure 6 and Figure 7 As shown, the vent on the top wall of the silo 2 is connected to the filter assembly 7 through the air outlet pipe 24. The filter assembly 7 includes a working box 71 and a filter cartridge 72. The working box 71 is connected to the outer wall of the silo 2 through an external bracket 73. A partition plate is provided in the working box 71, and the partition plate divides the working box 71 into an upper area and a lower area. The filter cartridge 72 is located in the working box 71. A plurality of filter cartridges 72 can be provided as needed. The filter cartridge 72 is detachably connected to the partition plate by bolts. The filter cartridge 72 includes an outer cylinder 721, a filter bag 722 and an inner cylinder 723. 23. The outer cylinder 721 is provided with a plurality of through holes, the filter bag 722 is arranged in the outer cylinder 721, the filtering accuracy of the filter bag 722 is selected according to needs, the inner cylinder 723 is arranged in the filter bag 722, and the inner cylinder 723 is also provided with a plurality of through holes. The upper end of the working box 71 is provided with an exhaust pipe 711 connected to the upper area. The air in the silo 2 is discharged from the ventilating port on the top wall and enters the lower area of ​​the filter assembly 7 through the air outlet pipe 24. After being filtered by the filter bag 722 of the filter cylinder 72, the air enters the upper area and is discharged from the exhaust pipe 711.

[0034] like Figure 1 and Figure 3As shown, the first working pipe 52 is connected to the upper area of ​​the working box 71 through the second working pipe 55, the first working pipe 52 is provided with a first shut-off valve 521, the second working pipe 55 is provided with a second shut-off valve 551, and the exhaust pipe 711 is provided with a third shut-off valve 712. The first shut-off valve 521, the second shut-off valve 551 and the third shut-off valve 712 are all electric valves and are electrically connected to the control box 54, and the control box 54 controls the on and off of the three shut-off valves. When it is necessary to dry the grain particles in the silo 2, the first shut-off valve 521 and the third shut-off valve 712 are opened, and the second shut-off valve 551 is closed. The airflow enters the silo 2 from the first working pipe 52 and the air distribution pipe 56 to dry the descending grain particles. The dried airflow passes through the filter cartridge 72 and is discharged from the exhaust pipe 711, and the dust and impurities are attached to the outer wall of the filter bag 722. When it is necessary to backflush the filter bag 722 of the filter cartridge 72, the first shut-off valve 521 and the third shut-off valve 712 are closed, the second shut-off valve 551 is opened, and the airflow enters the second working tube 55 from the first working tube 52, and then enters the filter cartridge 72 through the working box 71, thereby blowing the powder on the outer wall of the filter bag 722 off, completing the backflushing, and the dust and impurities are discharged from the dust exhaust pipe at the bottom of the working box 71.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vertical mixing bin for grain particles, characterized in that: The invention comprises a support (1), a silo (2) arranged on the support (1), a conveying assembly (3) arranged in the silo (2), a driving assembly (4) connected to the conveying assembly (3), and a drying assembly (5) arranged on the support (1) and connected to the silo (2), wherein the drying assembly (5) comprises a fan (51), a first working pipe (52) connected to the outlet end of the fan (51), an air distribution pipe (56) connected to the first working pipe (52), a heater (53) arranged on the first working pipe (52), and a driving assembly (4) connected to the fan (51) and the heater (56). The control box (54) is electrically connected to the heater (53), the air distribution duct (56) is arranged in the silo (2), a plurality of air distribution branch pipes (57) are arranged on the air distribution duct (56), a duckbill sleeve (58) is connected to the air distribution branch pipe (57), the duckbill sleeve (58) includes a duckbill membrane (581), the duckbill membrane (581) is closed by its own elastic action when there is no pressure inside the air distribution duct (56), and when the wind pressure in the air distribution duct (56) gradually increases, the duckbill membrane (581) gradually opens to allow the airflow in the air distribution duct (56) to enter the silo (2).

2. The vertical mixing bin for grain particles according to claim 1, characterized in that: The air distribution pipe (56) is an annular pipe, and the plurality of air distribution branch pipes (57) are distributed in an annular array on the air distribution pipe (56).

3. The vertical mixing bin for grain particles according to claim 2, characterized in that: The air distribution pipe (56) is movably connected to the first working pipe (52) via a flexible pipe (59), and the air distribution pipe (56) is movably connected to the inner wall of the silo (2) via a plurality of springs (561).

4. The vertical mixing bin for grain particles according to claim 1, characterized in that: The conveying assembly (3) comprises an intermediate shaft (31), a spiral blade (32) arranged on the intermediate shaft (31), and a first tube shell (33) sleeved outside the spiral blade (32); the first tube shell (33) is connected to the inner wall of the silo (2) through a support rod (34); a second tube shell (21) sleeved outside the spiral blade (32) is provided at the bottom of the silo (2); a feed hopper (6) in communication with the second tube shell (21) is connected to the second tube shell (21); and a discharge pipe (22) is connected to the side wall of the silo (2).

5. The vertical mixing bin for grain particles according to claim 1, characterized in that: After the conveying component (3) finishes working, the fan (51) operates in a pulsed manner to generate a pulsed airflow, and the pulsed airflow drives the air distribution pipe (56) to vibrate.

6. The vertical mixing bin for grain particles according to claim 1, characterized in that: The driving assembly (4) comprises a driving motor (41), a driving wheel (42) connected to the driving motor (41), a belt pulley (43) arranged on the intermediate shaft (31), and a belt (44) connected between the driving wheel (42) and the belt pulley (43).

7. The vertical mixing bin for grain particles according to claim 1, characterized in that: The silo (2) is connected to a filter assembly (7) via an air outlet pipe (24); the filter assembly (7) comprises a working box (71) and a filter cartridge (72) arranged in the working box (71); and the working box (71) is connected to an exhaust pipe (711).

8. The vertical mixing bin for grain particles according to claim 7, characterized in that: The first working pipe (52) is connected to the working box (71) through a second working pipe (55); a first shut-off valve (521) is provided on the first working pipe (52); a second shut-off valve (551) is provided on the second working pipe (55); and a third shut-off valve (712) is provided on the exhaust pipe (711).

9. The vertical mixing bin for grain particles according to claim 8, characterized in that: The first shut-off valve (521), the second shut-off valve (551) and the third shut-off valve (712) are all electrically connected to the control box (54).

10. The vertical mixing bin for grain particles according to claim 7, characterized in that: The filter cartridge (72) comprises an outer cartridge (721), a filter bag (722) disposed in the outer cartridge (721), and an inner cartridge (723) disposed in the filter bag (722).

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