Impurity and dust screening device for granular compound fertilizer
The utility model belongs to compound fertilizer apparatus for producing field especially relates to a be used for graininess compound fertilizer impurity and dust screening plant.
In compound fertilizer production process, often impurity and dust mix into in the finished product, wherein impurity is mainly for the compound fertilizer of caking and other debris that drop in process of production, the dust is mainly the mince of compound fertilizer, cause the quality accident after a large amount of impurity and dust get into the finished product, serious influence product appearance quality, when above-mentioned problem appears, no matter be artifical clearance or return production system and carry out secondary production and all can increase the manpower, the waste of material resources and financial resources, consequently, need one kind be used for graininess compound fertilizer impurity and dust screening plant, can be before graininess compound fertilizer finished product packing, impurity and dust in the finished product are sieved, improve the quality of compound fertilizer.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a be used for graininess compound fertilizer impurity and dust screening plant can solve the problem of thoughtlessly having impurity and dust easily among the prior art compound fertilizer.
The utility model discloses a following technical scheme can realize.
The utility model provides a pair of be used for graininess compound fertilizer impurity and dust screening plant, including inlet pipe, screen cloth, hopper, finished product unloading pipe, impurity unloading pipe, the screen cloth slope is installed in the inlet pipe lower part, and the screen cloth lower extreme is connected with impurity unloading pipe, the hopper is installed in the screen cloth lower part to respectively with inlet pipe and impurity unloading union coupling, finished product unloading pipe is installed in the hopper lower part, screen cloth upper portion is equipped with the exhaust column.
And one end of the exhaust pipe is provided with an axial flow fan and a cloth dust remover.
The screen cloth passes through damping spring and is connected with the hopper, and the screen cloth lower part is equipped with shock dynamo.
The upper end and the lower end of the screen are respectively connected with the feeding pipe and the impurity discharging pipe through rubber pads.
The impurity blanking pipe is internally provided with a baffle which is installed in the impurity blanking pipe in a hinged mode.
One end of the baffle is connected with the impurity blanking pipe through a return spring.
The beneficial effects of the utility model reside in that: the screening of the compound fertilizer product by using the screen and the hopper can separate impurities, improve the quality of the finished compound fertilizer product, and simultaneously absorb dust by using the axial flow fan, so that the dust in the product is effectively filtered, and the dust of the product is prevented from entering the finished product as far as possible.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a baffle;
FIG. 3 is a schematic view of the structure at the rubber pad;
in the figure: 1-feeding pipe, 2-screen mesh, 3-hopper, 4-finished product discharging pipe, 5-impurity discharging pipe, 6-exhaust pipe, 7-axial flow fan, 8-cloth dust remover, 9-damping spring, 10-vibration motor, 11-rubber pad, 12-baffle plate and 13-reset spring.
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in figure 1, a be used for graininess compound fertilizer impurity and dust screening plant, including inlet pipe 1, screen cloth 2, hopper 3, finished product unloading pipe 4, impurity unloading pipe 5, the slope of screen cloth 2 is installed in inlet pipe 1 lower part, and the screen cloth 2 lower extreme is connected with impurity unloading pipe 5, hopper 3 is installed in the screen cloth 2 lower part to be connected with inlet pipe 1 and impurity unloading pipe 5 respectively, finished product unloading pipe 4 is installed in hopper 3 lower part, 2 upper portions of screen cloth are equipped with exhaust column 6.
The finished compound fertilizer particles fall onto the screen 2 through the feeding pipe 1, the impurities in the compound fertilizer mainly are agglomerated compound fertilizer and other impurities falling in the production process, such as conveyor belt scraps and the like, the compound fertilizer particles and the impurities are separated through the holes on the screen 2, meanwhile, air is pumped through the axial flow fan 7, the air flow in the impurity discharging pipe 5 is less due to the blocking of the baffle 12, the feeding pipe 1 is connected with a storage bin of the compound fertilizer, the interior of the impurity discharging pipe is filled with the compound fertilizer particles, the air flow is also less, the air mainly rises through the finished product discharging pipe 4 and is discharged through the screen 2 and the exhaust pipe 6, the air in the finished product discharging pipe 4 forms convection with the compound fertilizer in the rising process, dust carried in the compound fertilizer is blown upwards, and the dust is brought into the cloth dust collector 8, so that the content of the dust in the finished product is effectively reduced, the quality of the product is improved.
The exhaust column 6 one end is equipped with axial fan 7 and cloth dust remover 8, can provide the negative pressure through axial fan 7, thereby can the suction dust with the air suction exhaust column 6 in to separate the dust in the air through cloth dust remover 8, prevent that the dust from discharging into the atmosphere, influencing the environment.
The screen cloth 2 is connected with the hopper 3 through the damping spring 9, and the screen cloth 2 lower part is equipped with shock dynamo 10, and shock dynamo 10 produces vibration through driving the eccentric wheel, can improve the filtration efficiency of screen cloth 2, and damping spring 9 can reduce the rotation transmission of screen cloth 2 and reduce the noise of equipment on the hopper 3.
The upper end and the lower end of the screen 2 are respectively connected with the feeding pipe 1 and the impurity discharging pipe 5 through the rubber pads 11, the screen 2 and the feeding pipe 1 and the impurity discharging pipe 5 have gaps of 3cm to 5cm, the gaps can be blocked through the rubber pads 11, and impurities are prevented from falling down from the gaps.
Be equipped with baffle 12 in impurity unloading pipe 5, baffle 12 is installed in impurity unloading pipe 5 through articulated, and baffle 12 can block the air, makes the air only get into exhaust column 6 through finished product unloading pipe 4, makes the air current can form the convection current with compound fertilizer granule, improves dust purification's efficiency.
Baffle 12 one end is connected with impurity unloading pipe 5 through reset spring 13, and impurity content in the compound fertilizer is lower, can fall on baffle 12 after being separated to make baffle 12 rotate to open under the effect of gravity, and continue the whereabouts, baffle 12 resets under reset spring 13's effect afterwards, reduces the flow of air current in the impurity unloading pipe 5.