Three-screen device for small particle materials

Abstract

The utility model relates to a three-screen device for small-particle materials; the three-screen device for small-particle materials includes a main pipeline and a high-power fan; the high-power fan is installed at the upper end of the main pipeline to output wind force into the main pipeline; a material inlet is provided on the upper side of the upper end of the main pipeline; a coarse material collection port is provided on the lower side of the upper end of the main pipeline; the main pipeline is inclined; a fine material collection bag is installed at the lower end of the main pipeline; the fine material collection bag is densely covered with small holes with a diameter smaller than that of aggregates with appropriate particle size; the material inlet and the coarse material collection port are staggered. The utility model enables aggregates with excessively large particles to roll down and slide, and increases the content of aggregates with excessively large particles discharged from the coarse material collection port; the fine material collection bag can screen aggregates with excessively small particles and aggregates with appropriate particle size, and aggregates with appropriate particle size are collected in the fine material collection bag and directly put into the heavy screening machine for screening; the utility model can reduce energy loss during crushing and screening, and improve the material utilization rate of construction waste.

Description

Technical Field

[0001] The utility model relates to the technical field of construction waste recycling, in particular to a three-screen device for small particle materials. Background Art

[0002] Construction waste is recycled, usually after sorting, removal, and crushing to form a mixture of coarse and fine aggregates. If these coarse and fine aggregates are to be reused, they need to be screened by a heavy screen according to the particle size. Aggregates with too large particles that are screened out can be crushed again, broken into small particles, and then screened. In the actual operation process, people found that the pile of aggregates with too large particles screened out by the heavy screen also contains aggregates with appropriate particle sizes and aggregates with too small particles. Aggregates with too small particles have lost their practical application value, so the existing technology generally blows out aggregates with too small particles through lightweight high-power fans. Some of the aggregates with suitable particle sizes are crushed again with the aggregates with too large particles, resulting in a waste of energy, and the other part is abandoned with the aggregates with too small particles, resulting in a waste of resources. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a three-screen device for small particle materials.

[0004] The technical scheme of the utility model is: a three-screen device for small-particle materials, comprising a main pipeline and a high-power fan; the high-power fan is installed at the upper end of the main pipeline, outputs wind force into the main pipeline, and forms an airflow from the upper end to the lower end of the main pipeline; a material inlet is arranged on the upper side of the upper end of the main pipeline; the mixed aggregate falls into the main pipeline from the material inlet; the aggregate with too large particle size will not be affected by the wind force and keeps falling; the solid material with appropriate particle size and the aggregate with too small particle size are pushed by the airflow to the lower end of the main pipeline for transportation; the main pipeline is inclined; due to inertia, during the transportation process, the aggregate with too small particle size is in the upper layer, and the aggregate with appropriate particle size is in the lower layer; and the aggregate with too large particle size can only roll down along the main pipeline at the lowest layer; The tumbling and sliding oversized aggregates can reduce the shielding of aggregates with appropriate particle sizes and aggregates with too small particle sizes, so that these aggregates with appropriate particle sizes and aggregates with too small particle sizes can be affected by the airflow; a coarse material collection port is provided on the lower side of the upper end of the main pipeline for discharging aggregates with too large particle sizes; a fine material collection bag is installed at the lower end of the main pipeline for collecting aggregates with appropriate particle sizes; the fine material collection bag is densely covered with small holes with a diameter smaller than that of aggregates with appropriate particle sizes; aggregates with too small particle sizes can pass through the small holes; aggregates with appropriate particle sizes are collected in the fine material collection bag; the material inlet and the coarse material collection port are staggered, which can prevent aggregates with too large particle sizes from being directly discharged from the coarse material collection port with aggregates with appropriate particle sizes and aggregates with too small particle sizes.

[0005] Preferably, a collecting funnel is provided below the coarse material collecting port to facilitate the collection of aggregates with particles that are too large.

[0006] Furthermore, the output end of the collecting funnel is arranged close to the lower end of the main pipeline; the side of the collecting hopper close to the high-power fan forms a gentle slope, which can increase the tumbling distance of aggregates with excessively large particle sizes; and aggregates with appropriate particle sizes and aggregates with excessively small particle sizes can return to the main pipeline due to the Bernoulli principle and be transported with the airflow.

[0007] Preferably, in the middle and rear section of the main pipeline, aggregates with appropriate particle size fall onto the inner wall of the lower side of the main pipeline, and then slide downward along with the inner wall of the main pipeline; a diversion chamber connected to the main pipeline is provided on the lower side of the middle part of the main pipeline for diverting aggregates with appropriate particle size; a conveyor belt for upward conveying is provided in the diversion chamber; the upper surface of the conveyor belt corresponds to the inner wall of the lower side of the main pipeline; the conveyor belt makes the aggregates falling on the conveyor belt approach the high-power fan; among them, aggregates with too small particle size will be blown up again when approaching the high-power fan and transported to the lower end of the main pipeline; and aggregates with appropriate particle size will enter the diversion chamber along with the conveyor belt; a fine material discharge port is provided at the bottom of the diversion chamber for discharging aggregates with appropriate particle size entering the diversion chamber.

[0008] Furthermore, a gap is left between the conveyor belt and the wall of the diversion chamber, so that aggregates with appropriate particle size can smoothly enter the diversion chamber and be discharged from the fine material discharge port.

[0009] Furthermore, the gap between the conveyor belt and the side wall of the diversion chamber is smaller than the gap between the conveyor belt and the bottom of the diversion chamber; a small gap between the conveyor belt and the side wall of the diversion chamber can prevent aggregates with appropriate particle size from entering the main pipeline through the gap; a large gap between the conveyor belt and the side wall of the diversion chamber can increase the capacity of aggregates with appropriate particle size.

[0010] Preferably, an inclined baffle matching the material inlet is provided on the side of the material inlet close to the high-power fan to guide the falling mixed aggregate into the material inlet.

[0011] Furthermore, guide ear plates are provided on both sides of the inclined baffle to guide the mixed aggregate on both sides of the inclined baffle.

[0012] Furthermore, the material inlet extends a vertical edge outward; the outer end of the vertical edge is connected to the inclined baffle; a reinforcing connecting plate is provided between the inner end of the vertical edge and the lower end of the inclined baffle; the vertical edge and the reinforcing connecting plate can enhance the supporting strength of the inclined baffle.

[0013] Preferably, a hinged column and a buckle column are provided in the middle of the main pipeline; the hinged column is hinged with a cantilever; the buckle column is matched with a buckle arm; the upper end of the cantilever and the upper end of the buckle arm are hinged to the outside to connect the main pipeline with the outside; the lower end of the cantilever is hinged to the hinged column; the lower end of the buckle arm is arrayed with buckle grooves matching the buckle column; the cantilever and the buckle arm make the main pipeline tilt; different buckle grooves correspond to different inclination angles of the main pipeline.

[0014] Furthermore, the buckle groove is arranged toward the lower end of the main pipeline, which can reduce the possibility of the buckle column falling out of the buckle groove and increase the hanging safety of the main pipeline.

[0015] The beneficial effects of the utility model are as follows: the three-screen device for small particle materials of the utility model has the following advantages:

[0016] (1) The utility model staggers the material inlet and the coarse material collection port, so that the aggregate with too large particle size rolling down reduces the shielding of the aggregate with appropriate particle size and the aggregate with too small particle size, and increases the content of the aggregate with too large particle size discharged from the coarse material collection port; the fine material collection bag can screen the aggregate with too small particle size and the aggregate with appropriate particle size, and the aggregate with appropriate particle size is collected in the fine material collection bag and directly put into the heavy screening machine for screening; the utility model can reduce the energy loss during crushing and screening, and improve the material utilization rate of construction waste;

[0017] (2) The diverter chamber of the utility model is used to divert aggregates with appropriate particle sizes; the conveyor belt in the diverter chamber allows the aggregates that fall on the conveyor belt to approach the high-power fan; the aggregates with too small particle sizes will be blown up again when approaching the high-power fan and transported to the lower end of the main pipeline; and the aggregates with appropriate particle sizes will enter the diverter chamber along the conveyor belt; the fine material discharge port is used to discharge the aggregates with appropriate particle sizes that have entered the diverter chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the three-screen device for small particle materials of the utility model;

[0019] Figure 2 yes Figure 1 The main view;

[0020] Figure 3 yes Figure 2 AA section view;

[0021] Figure 4 yes Figure 3 BB cross-sectional view;

[0022] Figure 5 yes Figure 4 I magnified view of;

[0023] In the figure: 1. main pipeline, 11. material inlet, 111. inclined baffle, 112. guide ear plate, 113. vertical edge, 114. reinforced connecting plate, 12. coarse material collection port, 121. collecting funnel, 13. fine material collection bag, 14. diversion chamber, 141. conveyor belt, 142. fine material discharge port, 15. hinged column, 151. cantilever, 16. buckle column, 161. buckle arm, 1611. buckle slot, 2. high-power fan. DETAILED DESCRIPTION

[0024] Example 1: See Figure 1-5 , a three-screen device for small particle materials, comprising a main pipeline 1 and a high-power fan 2; the high-power fan 2 is installed at the upper end of the main pipeline 1, outputting wind force into the main pipeline 1, forming an airflow from the upper end of the main pipeline 1 to the lower end of the main pipeline 1; a material inlet 11 is arranged on the upper side of the upper end of the main pipeline 1; the mixed aggregate falls into the main pipeline 1 from the material inlet 11; the aggregate with too large particle size will not be affected by the wind force and will keep falling; the solid material with appropriate particle size and the aggregate with too small particle size are pushed by the airflow to the lower end of the main pipeline 1 for transportation; the main pipeline 1 is arranged at an angle; due to inertia, during the transportation process, the aggregate with too small particle size is in the upper layer, and the aggregate with appropriate particle size is in the lower layer; while the aggregate with too large particle size can only roll down along the main pipeline 1 at the lowest layer; the rolling down Aggregates with too large particle sizes can reduce the shielding of aggregates with appropriate particle sizes and aggregates with too small particle sizes, so that these aggregates with appropriate particle sizes and aggregates with too small particle sizes can be affected by the airflow; a coarse material collection port 12 is provided on the lower side of the upper end of the main pipeline 1 for discharging aggregates with too large particle sizes; a fine material collection bag 13 is installed at the lower end of the main pipeline 1 for collecting aggregates with appropriate particle sizes; the fine material collection bag 13 is densely covered with small holes with a diameter smaller than that of aggregates with appropriate particle sizes; aggregates with too small particle sizes can pass through the small holes; aggregates with appropriate particle sizes are collected in the fine material collection bag 13; the material inlet 11 and the coarse material collection port 12 are staggered, which can prevent aggregates with too large particle sizes from being directly discharged from the coarse material collection port 12 with aggregates with appropriate particle sizes and aggregates with too small particle sizes.

[0025] Compared with the prior art, the utility model staggers the material inlet 11 and the coarse material collection port 12, so that the aggregate with too large particle size that rolls down reduces the shielding of the aggregate with appropriate particle size and the aggregate with too small particle size, and the content of the aggregate with too large particle size discharged from the coarse material collection port 12 is increased; the fine material collection bag 13 can screen the aggregate with too small particle size and the aggregate with appropriate particle size, and the aggregate with appropriate particle size is collected in the fine material collection bag 13 and directly put into the heavy screening machine for screening; the utility model can reduce the energy loss during crushing and screening, and improve the material utilization rate of construction waste.

[0026] In this embodiment, the main pipeline 1 is suspended below the aggregate discharge end of the re-screening machine; the material inlet 11 is directly opposite to the aggregate discharge end.

[0027] A collecting funnel 121 is provided below the coarse material collecting port 12 to facilitate the collection of aggregates with particles that are too large.

[0028] The output end of the collecting funnel 121 is arranged near the lower end of the main pipeline 1; a gentle slope is formed on the side of the collecting hopper near the high-power fan 2, which can increase the tumbling distance of aggregates with excessively large particle sizes; and aggregates with appropriate particle sizes and aggregates with excessively small particle sizes can return to the main pipeline 1 due to the Bernoulli principle and be transported with the airflow.

[0029] In the middle and rear section of the main pipeline 1, aggregates with appropriate particle size fall onto the inner wall of the lower side of the main pipeline 1, and then slide downward along with the inner wall of the main pipeline 1; a diversion chamber 14 connected to the main pipeline 1 is provided on the lower side of the middle part of the main pipeline 1, so as to divert aggregates with appropriate particle size; a conveyor belt 141 for conveying upward is provided in the diversion chamber 14; the upper surface of the conveyor belt 141 corresponds to the inner wall of the lower side of the main pipeline 1; the conveyor belt 141 makes the aggregates falling on the conveyor belt 141 approach the high-power fan 2; among them, aggregates with too small particle size will be blown up again when approaching the high-power fan 2, and transported to the lower end of the main pipeline 1; and aggregates with appropriate particle size will enter the diversion chamber 14 along with the conveyor belt 141; a fine material discharge port 142 is provided at the bottom of the diversion chamber 14, which is used to discharge aggregates with appropriate particle size entering the diversion chamber 14.

[0030] A gap is left between the conveyor belt 141 and the wall of the diversion chamber 14 to facilitate the aggregate with appropriate particle size to smoothly enter the diversion chamber 14 and be discharged from the fine material discharge port 142 .

[0031] The gap between the conveyor belt 141 and the side wall of the diverter chamber 14 is smaller than the gap between the conveyor belt 141 and the bottom of the diverter chamber 14; a small gap between the conveyor belt 141 and the side wall of the diverter chamber 14 can prevent aggregates with appropriate particle size from entering the main pipeline 1 through the gap; a large gap between the conveyor belt 141 and the side wall of the diverter chamber 14 can increase the capacity of aggregates with appropriate particle size.

[0032] An inclined baffle 111 cooperating with the material inlet 11 is provided on the side of the material inlet 11 close to the high-power fan 2 to guide the falling mixed aggregate to enter the material inlet 11 .

[0033] Guide ear plates 112 are provided on both sides of the inclined baffle 111 to guide the mixed aggregate on both sides of the inclined baffle 111 .

[0034] The material inlet 11 extends outwardly with a vertical edge 113 ; the outer end of the vertical edge 113 is connected to the inclined baffle 111 ; a reinforcing connecting plate 114 is provided between the inner end of the vertical edge 113 and the lower end of the inclined baffle 111 ; the vertical edge 113 and the reinforcing connecting plate 114 can strengthen the supporting strength of the inclined baffle 111 .

[0035] The working process of the utility model is as follows: the high-power fan 2 is turned on, and an airflow is generated in the main pipeline 1 from the upper end of the main pipeline 1 to the lower end of the main pipeline 1; the mixed aggregate storage material inlet 11 falls into the upper end of the main pipeline 1; the aggregate with too large a particle size is not affected by the airflow and keeps falling; the aggregate with too small a particle size is affected by the airflow before the aggregate with appropriate particle size; the aggregate with too small a particle size is on the top, and the aggregate with appropriate particle size is in the middle, and they are transported to the lower end of the main pipeline 1 together; of course, a part of the aggregate with too small a particle size and the aggregate with appropriate particle size fall together with the aggregate with too large a particle size because of the shielding of the aggregate with too large a particle size; the aggregate with too large a particle size falls on the inner wall of the lower side of the main pipeline 1 and begins to roll down; the aggregate with too large a particle size that rolls down will reduce the shielding effect; the aggregate with too small a particle size and the aggregate with appropriate particle size that were originally shielded are affected by the airflow and transported to the lower end of the main pipeline 1 together; at the lower end of the main pipeline 1, the aggregate with appropriate particle size is collected in the fine material collection bag 13; the aggregate with too small a particle size is discharged to the outside of the fine material collection bag 13 through the small hole.

[0036] Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The differences are as follows: the inclination angle of the main pipeline 1 can control the sliding speed of the oversized aggregate in the main pipeline 1; and different types of re-screening machines screen out different aggregate components; by controlling the sliding speed of the oversized aggregate in the main pipeline 1, the tumbling time of the oversized aggregate in the main pipeline 1 can be changed; the tumbling time of the oversized aggregate in the main pipeline 1 affects the content of the oversized aggregate discharged from the coarse material collection port 12. The main pipeline 1 is provided with an articulated column 15 and a buckle column 16 in the middle part; the articulated column 15 is hinged with a cantilever 151; the buckle column 16 is matched with a buckle arm 161; the upper end of the cantilever 151 and the upper end of the buckle arm 161 are both hinged with the outside to connect the main pipeline 1 with the outside; the lower end of the cantilever 151 is hinged with the articulated column 15; the lower end of the buckle arm 161 is arrayed with buckle grooves 1611 matching the buckle column 16; the cantilever 151 and the buckle arm 161 make the main pipeline 1 tilted; different buckle grooves 1611 correspond to different inclination angles of the main pipeline 1.

[0037] The buckle groove 1611 is arranged toward the lower end of the main pipeline 1 , which can reduce the possibility of the buckle column 16 being disengaged from the buckle groove 1611 and increase the hanging safety of the main pipeline 1 .

Claims

1. A three-screen device for small particle materials, comprising a main pipeline and a high-power fan; the high-power fan is installed at the upper end of the main pipeline to output wind force into the main pipeline; a material inlet is provided on the upper side of the upper end of the main pipeline; a coarse material collection port is provided on the lower side of the upper end of the main pipeline; the characteristics are: The main pipeline is set at an inclination; a fine material collection bag is installed at the lower end of the main pipeline; the fine material collection bag is densely covered with small holes with a diameter smaller than that of aggregates with suitable particle size; the material inlet and the coarse material collection port are staggered.

2. The three-screen device for small particle materials according to claim 1 is characterized in that: A collecting funnel is provided below the coarse material collecting port.

3. The three-screen device for small particle materials according to claim 2 is characterized in that: The output end of the collecting funnel is arranged close to the lower end of the main pipeline.

4. The three-screen device for small particle materials according to claim 1, characterized in that: A diversion chamber connected to the main pipeline is provided at the lower middle part of the main pipeline; a conveyor belt for upward conveyance is provided in the diversion chamber; the upper surface of the conveyor belt corresponds to the inner wall of the lower side of the main pipeline; a fine material discharge port is provided at the bottom of the diversion chamber.

5. The three-screen device for small particle materials according to claim 4 is characterized in that: There is a gap between the conveyor belt and the wall of the diversion chamber.

6. The three-screen device for small particle materials according to claim 1, characterized in that: An oblique baffle matching the material inlet is arranged on the side of the material inlet close to the high-power fan.

7. The three-screen device for small particle materials according to claim 6, characterized in that: Guide ear plates are arranged on both sides of the inclined baffle.

8. The three-screen device for small particle materials according to claim 6, characterized in that: The material inlet extends a vertical edge outward; the outer end of the vertical edge is connected to the inclined baffle; a reinforcing connecting plate is provided between the inner end of the vertical edge and the lower end of the inclined baffle.

9. The three-screen device for small particle materials according to claim 1, characterized in that: A hinged column and a buckle column are provided in the middle of the main pipeline; the hinged column is hinged with a cantilever; the buckle column is matched with a buckle arm; the upper end of the cantilever and the upper end of the buckle arm are both hinged to the outside; the lower end of the cantilever is hinged to the hinged column; the lower end of the buckle arm is arrayed with buckle grooves matching the buckle column.

10. The three-screen device for small particle materials according to claim 9, characterized in that: The buckle groove is arranged toward the lower end of the main pipeline.

Images