Waste residue granulation multi-stage screening device

Abstract

The invention relates to the technical field of superfine granulated slag screening, in particular to a waste slag granulating multistage screening device which comprises a pneumatic driving mechanism and a storage bin, a conveying barrel is arranged on the storage bin, a feeding pipeline is arranged at the upper end of the conveying barrel, and a supporting base is arranged at the bottom of the feeding pipeline; an arc-shaped screen pipe and a material storage box are arranged on the feeding pipeline, and a discharging pipe is fixedly mounted on the outer side of the material storage box. High-speed airflow is injected into the conveying barrel through the pneumatic driving mechanism to enable slag to rise, superfine slag naturally falls after entering the feeding pipeline, the superfine slag enters the arc-shaped screen pipe in the falling process, slag particles roll on the inner wall of the arc-shaped screen pipe under the action of the airflow, and the slag particles are separated from the arc-shaped screen pipe. And particles meeting the standard enter the material storage box and are discharged through the discharging pipe, coarse particles can flow back into the feeding pipeline to be screened in the next stage, the mesh blocking probability can be reduced, meanwhile, the grading speed can be increased, and therefore the slag granulation screening efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to a multi-stage screening device, in particular to a waste slag granulation multi-stage screening device, belonging to the technical field of ultra-fine granulated slag screening. Background Art

[0002] Ultrafine granulated slag, also known as ultrafine slag powder, refers to granulated blast furnace slag, which is a powder obtained through specific processing. Ultrafine granulated slag powder is a powder that is dried and ground to a considerable fineness and meets the corresponding activity index; it has the characteristics of high activity, high fineness, high uniformity, etc., which can significantly improve the strength and durability of concrete and shorten the hardening time of concrete. Ultrafine granulated slag, as an emerging building material, has broad application prospects and market demand. Ultrafine granulated slag screening is an important link in the processing of ultrafine slag powder. Its goal is to separate slag powder according to different particle sizes to meet the needs of slag powder fineness in different fields. Existing multi-stage screening devices usually use vibrating screens for grading, but powdered slag is very easy to clog the net.

[0003] For example, a Chinese patent document with a publication number of CN219400585U discloses a waste slag granulation multi-stage screening device, in which ultra-fine slag enters the first screen drum in the first screening box 1 through the feed hopper 2, and the first motor 33 on the top feed pipe 32 of the first screen drum is powered on, and the second motor 36 on the bottom discharge pipe 35 of the first screen drum is powered on, and the second motor 36 is used to drive the discharge pipe 35 to rotate around the second bearing 37, and the first motor 33 is used to drive the feed pipe 32 to rotate around the first bearing 34, thereby driving the entire screen drum 3 to rotate, and the screen drum 3 is rotated to screen the ultra-fine slag, and the screened ultra-fine slag is transported to the delivery pipe 6 through the discharge chute 5, and is transported out by the delivery pipe 6. When there is no ultrafine slag discharged from the material pipe 6, it means that the ultrafine slag of particles of this size has been screened, and then the power supply of the solenoid valve 39 on the second screen drum top connecting pipe 38 is turned on, so that the ultrafine slag that has not been screened out is transported to the second screen drum under the action of gravity. The second screen drum has the same structure as the first screen drum, and the diameter of the screen hole 31 on the second screen drum is larger than the diameter of the screen hole 31 on the first screen drum. The second screen drum is rotated to screen the remaining ultrafine slag again, and then the ultrafine slag is continued to be screened through the third screen drum and the fourth screen drum. Finally, the ultrafine slag is discharged through the bottom of the fourth screen drum, achieving the effect of efficient and rapid screening. Each screen drum can work at the same time to achieve efficient screening.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that when the above equipment is used, the consistent screening method is not convenient for discharging the filter residue in the middle layer. The smaller the particle size of the filter residue is, the easier it is to clog the sieve holes. In addition, during the rotation of the screen drum, the filter residue may generate centrifugal force to accumulate around the screen, which will generate a load on the screen drum and may also reduce the screening efficiency.

[0005] Therefore, there is an urgent need to improve the waste slag granulation multi-stage screening device to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-stage screening device for granulating waste slag. A high-speed airflow is injected into the inside of a feeding barrel through a pneumatic drive mechanism to make the slag rise. The ultra-fine slag enters the feeding pipe and falls naturally. During the falling process, it enters the arc-shaped screen pipe. The slag particles roll on the inner wall of the arc-shaped screen pipe under the action of the airflow. The particles that meet the standards enter the material storage box and are discharged through the discharge pipe. The coarse particles will flow back into the feeding pipe for the next level of screening. This can not only reduce the probability of mesh blockage, but also increase the grading speed, thereby greatly improving the efficiency of slag granulation and screening.

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A waste residue granulation multi-stage screening device, comprising a pneumatic drive mechanism and a storage bin, wherein a feeding cylinder is fixedly arranged on one side of the storage bin corresponding to the pneumatic drive mechanism, the output end of the pneumatic drive mechanism is connected with the interior of the feeding cylinder, a feeding pipe is fixedly installed on the upper end of the feeding cylinder, the feeding pipe extends to one side of the pneumatic drive mechanism and the storage bin, a support base is fixedly installed on the bottom of one end of the feeding pipe away from the feeding cylinder, and the bottom side of the support base is fixedly installed on the ground by bolts;

[0009] A plurality of evenly distributed arc-shaped screen tubes are fixedly installed on the feeding pipe, and both ends of the arc-shaped screen tubes extend to the interior of the feeding pipe. A plurality of material storage boxes corresponding to the arc-shaped screen tubes are fixedly installed on the outside of the feeding pipe. The arc-shaped screen tubes are arranged inside the material storage box, and the interior of the feeding pipe is connected with the interior of the material storage box through the arc-shaped screen tubes. A discharge pipe is fixedly installed on the outside of the material storage box, and the interior of the material storage box is connected with the outside through the discharge pipe.

[0010] Preferably, the arc-shaped screen tube is provided with a plurality of evenly distributed fine screen holes, a group of the arc-shaped screen tubes corresponds to one material storage box, and the mesh diameters of the fine screen holes on the plurality of the arc-shaped screen tubes increase successively from top to bottom.

[0011] Preferably, the material storage boxes are sleeved on the outer wall of the feeding pipe in groups of two, a sealing bearing is fixedly connected between two of the material storage boxes, and the material storage boxes are rotatably arranged on the outer wall of the feeding pipe through the sealing bearing.

[0012] Preferably, the discharge pipes on the same group of material storage boxes are internally connected to each other, a cross connecting pipe is fixedly installed at the node of the two discharge pipes, and a reversing valve is rotatably arranged inside the cross connecting pipe.

[0013] Preferably, the pneumatic drive mechanism includes a servo motor and a blower fixedly mounted on one side of the servo motor, the output end of the blower is connected to the interior of the feed barrel, a coupling is fixedly mounted on the same side of the servo motor and the blower, and the servo motor drives the blower to rotate via the coupling.

[0014] Preferably, the output end of the servo motor passes through the coupling and extends to the outside of the coupling, and the output end of the servo motor is fixedly connected with a screw rod, which is rotatably arranged on a side of the coupling away from the servo motor.

[0015] Preferably, a vertical shaft is rotatably provided on a side of the pneumatic drive mechanism away from the coupling, a gear is fixedly mounted on the vertical shaft, the gear is meshed with the screw, and a dragon lifting rod is fixedly connected to the upper end of the vertical shaft, and the dragon lifting rod extends to the interior of the feed barrel.

[0016] Preferably, a bin bottom discharge pipe is fixedly provided at the bottom of the storage bin corresponding to one side of the feed barrel, the interior of the storage bin is connected with the interior of the feed barrel through the bin bottom discharge pipe, the bin bottom discharge pipe corresponds to the bottom end of the dragon lifting rod, and the output end of the blower corresponds to the upper end of the dragon lifting rod.

[0017] Preferably, a plurality of evenly distributed C-shaped collars are fixedly disposed inside the feed pipe, the outlet of the arc-shaped screen pipe inside the feed pipe is disposed between two of the C-shaped collars, and an impeller is rotatably disposed inside the C-shaped collar.

[0018] Preferably, an impeller is rotatably arranged inside the C-shaped collar, a plurality of evenly distributed steel balls are rotatably arranged between the outer wall of the impeller and the inner wall of the C-shaped collar, and the impeller is rotatably arranged on the inner side of the C-shaped collar via the steel balls.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. The present invention uses a pneumatic drive mechanism to inject high-speed airflow into the inside of the feeding barrel to make the slag rise. The ultra-fine slag enters the feeding pipe and falls naturally. During the falling process, it enters the arc screen tube. The slag particles roll on the inner wall of the arc screen tube under the action of the airflow. The particles that meet the standards enter the material storage box and are discharged through the discharge pipe. The coarse particles will flow back to the inside of the feeding pipe for the next level of screening. This can not only reduce the probability of mesh blockage, but also increase the classification speed, thereby greatly improving the efficiency of slag granulation and screening.

[0021] 2. When the slag material of the present invention passes through the interior of the arc-shaped screen tube, it is entrained by the airflow and contacts the inner wall of the arc-shaped screen tube. Therefore, fine particles will enter the material storage box through the fine screen holes. At this time, the slag particles will still be entrained by the airflow to generate centrifugal force to rotate along the inner wall of the material storage box and discharge at the outlet of the discharge pipe. The special distribution of the fine screen holes can separate the slag from the finest particles first, and the large particles fall to the bottom of the feeding pipe, which can greatly reduce the probability of slag accumulation, and cooperate with the high-speed airflow output by the pneumatic drive mechanism and the gravity of the filter residue itself to reduce the load of the screening device.

[0022] 3. The cross connecting pipe of the present invention allows the slag in the two material storage boxes to be combined and discharged. The reversing valve is used to separate the upper and lower discharge pipes. The particle size of the discharged filter residue can be adjusted according to the standards specified by the requirements. When the particle size is required to be fine, the upper and lower discharge pipes can be separated by the reversing valve. The material storage box can also be rotated through the sealed bearing by turning the discharge pipe, which is convenient for the staff to collect, thereby greatly improving the applicability of the waste slag granulation multi-stage screening device.

[0023] 4. In the process of the servo motor of the present invention driving the blower to rotate through the coupling, the screw also rotates along with it and rotates through the gear-driven vertical shaft, so that the Jiaolong lifting rod rotates inside the feed barrel, and the interior of the storage bin is connected with the interior of the feed barrel through the bin bottom discharge pipe, so that the filter residue naturally flows into the feed barrel, and the Jiaolong lifting rod then transports the material to the output end of the blower. At this time, the Jiaolong lifting rod can also prevent the high-speed airflow from blowing back and causing the filter residue to flow back, thereby improving the continuity of the filter residue classification, and only filling the storage bin needs to be filled.

[0024] 5. When the high-speed airflow injected by the blower of the present invention passes through the impeller, the impeller rotates inside the C-shaped collar through the steel balls under the action of wind force. When the filter residue material passes through the impeller, the accumulated ultrafine filter residue will be broken up and thrown toward the inner wall of the feed pipe as the impeller rotates, so that the filter residue enters the arc-shaped screen pipe more smoothly. The impeller can also buffer and divert the airflow, so that the flow speed of the airflow is more uniform, preventing the filter residue from being blown out directly from the feed pipe.

[0025] 6. In the present invention, when the filter residue particles separated by the feeding pipeline are uneven in size, it indicates that the fine sieve holes of the arc-shaped screen pipe are clogged. The discharge port at the bottom of the feeding pipeline can be blocked, and the fine sieve holes of the arc-shaped screen pipe can be flushed with a high-speed airflow to facilitate cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A schematic diagram of the three-dimensional structure provided by the present invention;

[0028] Figure 2 A front elevation view provided for the present invention;

[0029] Figure 3 A cross-sectional elevation view of the feed tube provided by the present invention;

[0030] Figure 4 A cross-sectional elevation view of a feed pipe provided by the present invention;

[0031] Figure 5 An exploded schematic diagram of the arc-shaped screen tube and the material storage box provided by the present invention;

[0032] Figure 6 A schematic diagram of a pneumatic drive mechanism provided by the present invention;

[0033] Figure 7 A schematic diagram of the impeller structure provided by the present invention;

[0034] Figure 8 The present invention provides Figure 7 Enlarged schematic diagram at point A in the middle.

[0035] In the figure, 1. pneumatic drive mechanism; 2. storage bin; 21. discharge pipe at the bottom of the bin; 3. feed barrel; 4. feeding pipeline; 5. support base; 6. arc screen tube; 61. fine screen hole; 7. material storage box; 71. sealed bearing; 8. discharge pipe; 9. cross connecting pipe; 10. reversing valve; 11. servo motor; 12. blower; 13. coupling; 14. screw; 15. vertical shaft; 16. gear; 17. dragon lifting rod; 18. C-type ring; 19. impeller; 20. steel ball; 21. discharge pipe at the bottom of the bin. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0037] like Figure 1 - Figure 8 As shown, the waste slag granulation multi-stage screening device provided in this embodiment includes a pneumatic drive mechanism 1 and a storage bin 2. A feeding cylinder 3 is fixedly arranged on one side of the storage bin 2 corresponding to the pneumatic drive mechanism 1. The output end of the pneumatic drive mechanism 1 is connected to the inside of the feeding cylinder 3. A feeding pipe 4 is fixedly installed on the upper end of the feeding cylinder 3. The feeding pipe 4 extends to one side of the pneumatic drive mechanism 1 and the storage bin 2. The feeding pipe 4 is used to guide the airflow and the material transmission direction. A support base 5 is fixedly installed on the bottom of one end of the feeding pipe 4 away from the feeding cylinder 3. The bottom side of the support base 5 is fixedly installed on the ground by bolts. The support base 5 is used to support the feeding pipe 4.

[0038] A plurality of evenly distributed arc-shaped screen tubes 6 are fixedly installed on the feeding pipe 4, both ends of the arc-shaped screen tubes 6 extend to the inside of the feeding pipe 4, a plurality of material storage boxes 7 corresponding to the arc-shaped screen tubes 6 are fixedly installed on the outside of the feeding pipe 4, the arc-shaped screen tubes 6 are arranged inside the material storage box 7, the inside of the feeding pipe 4 is connected with the inside of the material storage box 7 through the arc-shaped screen tubes 6, a discharge pipe 8 is fixedly installed on the outside of the material storage box 7, and the inside of the material storage box 7 is connected with the outside through the discharge pipe 8;

[0039] Among them, the ultrafine slag in the storage bin 2 naturally flows into the inside of the feeding barrel 3 from the bottom, and the high-speed airflow is injected into the inside of the feeding barrel 3 through the pneumatic drive mechanism 1 to make the slag rise. The ultrafine slag enters the feeding pipe 4 and falls naturally. In the process of falling, it enters several arc-shaped screen tubes 6. The slag particles roll on the inner wall of the arc-shaped screen tube 6 under the action of the airflow. The particles that meet the standards enter the material storage box 7 and are discharged through the discharge pipe 8. The coarse particles will flow back to the inside of the feeding pipe 4 for the next level of screening, which can not only reduce the probability of mesh blockage, but also increase the grading speed, thereby greatly improving the efficiency of slag granulation and screening.

[0040] Further, such as Figure 1 - Figure 8 As shown, a plurality of evenly distributed fine sieve holes 61 are provided on the arc-shaped screen tube 6, a group of arc-shaped screen tubes 6 corresponds to a material storage box 7, and the mesh diameters of the fine sieve holes 61 on the plurality of arc-shaped screen tubes 6 increase from top to bottom, so that the slag is separated from the finest particles from top to bottom, and a plurality of material storage boxes 7 are sleeved on the outer wall of the feeding pipe 4 in pairs, and a sealed bearing 71 is fixedly connected between the two material storage boxes 7, and the sealed bearing 71 can be used to adjust the discharge direction of the discharge pipe 8;

[0041] When the slag material passes through the arc-shaped screen tube 6, it is entrained by the airflow and contacts the inner wall of the arc-shaped screen tube 6, so the fine particles will enter the material storage box 7 through the fine screen holes 61. At this time, the slag particles will still be entrained by the airflow to generate centrifugal force to rotate along the inner wall of the material storage box 7, and be discharged at the outlet of the discharge pipe 8. The special distribution of the fine screen holes 61 can make the slag start to separate from the finest particles first, and the large particles fall into the bottom of the feeding pipe 4, which can greatly reduce the probability of slag accumulation, and cooperate with the high-speed airflow output by the pneumatic drive mechanism 1 and the gravity of the filter residue itself to reduce the load of the screening device;

[0042] At the same time, if Figure 1 - Figure 8 As shown, a plurality of material storage boxes 7 are rotatably arranged on the outer wall of the feeding pipe 4 through a sealing bearing 71, and the insides of the discharge pipes 8 located on the same group of material storage boxes 7 are interconnected, and a cross connecting pipe 9 is fixedly installed at the node of the two discharge pipes 8, and the cross connecting pipe 9 is used to connect the upper and lower discharge pipes 8, and a reversing valve 10 is rotatably arranged inside the cross connecting pipe 9, and the reversing valve 10 is used to separate the upper and lower discharge pipes 8;

[0043] Among them, the cross connecting pipe 9 allows the slag in the two material storage boxes 7 to be combined and discharged, and the reversing valve 10 is used to separate the upper and lower discharge pipes 8. The particle size of the discharged slag can be adjusted according to the standards specified by the needs. When the particle size is required to be fine, the upper and lower discharge pipes 8 can be separated by the reversing valve 10. Turning the discharge pipe 8 can also make the material storage box 7 rotate through the sealed bearing 71, which is convenient for the staff to collect, thereby greatly improving the applicability of the waste slag granulation multi-stage screening device.

[0044] Furthermore, Figure 1 - Figure 8As shown, the pneumatic drive mechanism 1 includes a servo motor 11 and a blower 12 fixedly installed on one side of the servo motor 11. The output end of the blower 12 is connected to the inside of the feeding barrel 3. A coupling 13 is fixedly installed on the same side of the servo motor 11 and the blower 12. The servo motor 11 drives the blower 12 to rotate through the coupling 13. The output end of the servo motor 11 passes through the coupling 13 and extends to the outside of the coupling 13. The output end of the servo motor 11 is fixedly connected to a screw 14. The screw 14 is rotatably arranged on the side of the coupling 13 away from the servo motor 11. The pneumatic drive mechanism 1 A vertical shaft 15 is rotatably provided on one side away from the coupling 13, a gear 16 is fixedly mounted on the vertical shaft 15, the gear 16 is meshed with the screw 14, a dragon lifting rod 17 is fixedly connected to the upper end of the vertical shaft 15, the dragon lifting rod 17 extends to the inside of the feeding barrel 3, a bin bottom discharge pipe 21 is fixedly provided at the bottom of the storage bin 2 corresponding to the side of the feeding barrel 3, the interior of the storage bin 2 is connected with the interior of the feeding barrel 3 through the bin bottom discharge pipe 21, the bin bottom discharge pipe 21 corresponds to the bottom end of the dragon lifting rod 17, and the output end of the blower 12 corresponds to the upper end of the dragon lifting rod 17;

[0045] Among them, when the servo motor 11 drives the blower 12 to rotate through the coupling 13, the screw 14 also rotates and drives the vertical shaft 15 to rotate through the gear 16, so that the dragon lifting rod 17 rotates inside the feed barrel 3, and the interior of the storage bin 2 is connected with the interior of the feed barrel 3 through the bin bottom discharge pipe 21, so that the filter residue naturally flows into the feed barrel 3, and the dragon lifting rod 17 then transports the material to the output end position of the blower 12. At this time, the dragon lifting rod 17 can also prevent the high-speed airflow from blowing back and causing the filter residue to flow back, thereby improving the continuity of the filter residue grading, and only filling the storage bin 2 is needed.

[0046] In order to solve the problem that ultra-fine slag may be directly sent out of the feeding pipe 4 through the air flow;

[0047] A plurality of evenly distributed C-shaped collars 18 are fixedly arranged inside the feeding pipe 4, and the outlet of the arc-shaped screen pipe 6 inside the feeding pipe 4 is arranged between two C-shaped collars 18. An impeller 19 is rotatably arranged inside the C-shaped collar 18. The impeller 19 can scatter the filter residue material on the one hand, and can also throw the filter residue material to the periphery on the other hand. An impeller 19 is rotatably arranged inside the C-shaped collar 18, and a plurality of evenly distributed steel balls 20 are rotatably arranged between the outer wall of the impeller 19 and the inner wall of the C-shaped collar 18. The impeller 19 is rotatably arranged on the inner side of the C-shaped collar 18 through the steel balls 20.

[0048] Among them, when the high-speed airflow injected by the blower 12 passes through the impeller 19, the impeller 19 rotates inside the C-shaped ring 18 through the steel ball 20 under the action of wind force. When the filter residue material passes through the impeller 19, the accumulated ultrafine filter residue will be broken up, and at the same time, as the impeller 19 rotates, it is thrown toward the inner wall of the feeding pipe 4, so that the filter residue enters the arc screen tube 6 more smoothly, and the impeller 19 can also buffer and divert the airflow to make the flow speed of the airflow more uniform, preventing the filter residue from being blown out directly from the feeding pipe 4. When the particles separated by the feeding pipe 4 are uneven in size, it means that the fine screen holes 61 of the arc screen tube 6 are blocked. The discharge port at the bottom of the feeding pipe 4 can be blocked, and the fine screen holes 61 of the arc screen tube 6 can be flushed with high-speed airflow for easy cleaning.

[0049] like Figure 1 - Figure 8 As shown, the principle of the waste slag granulation multi-stage screening device provided in this embodiment is as follows:

[0050] During use, the ultra-fine slag is injected into the storage bin 2, and the ultra-fine slag naturally flows into the bottom discharge pipe 21 of the bottom side of the storage bin 2 to the bottom of the dragon lifting rod 17 inside the feeding barrel 3. During the process of the servo motor 11 driving the blower 12 to rotate through the coupling 13, the screw 14 also rotates and drives the vertical shaft 15 to rotate through the gear 16, so that the dragon lifting rod 17 rotates inside the feeding barrel 3, and the dragon lifting rod 17 then transports the material to the output end position of the blower 12, and the slag is raised by the high-speed airflow. After the ultra-fine slag enters the feeding pipe 4, it falls naturally. The impeller 19 rotates inside the C-shaped collar 18 through the steel ball 20 under the action of wind. When the filtered residue material passes through the impeller 19, the accumulated ultra-fine The filter residue will be broken up and thrown toward the inner wall of the feeding pipe 4 as the impeller 19 rotates, making the filter residue enter the arc screen tube 6 more smoothly, and the impeller 19 can also buffer and divert the airflow to make the flow speed of the airflow more uniform. The ultra-fine slag enters several arc screen tubes 6 during the falling process. The slag particles roll on the inner wall of the arc screen tube 6 under the action of the airflow. The particles that meet the standards enter the material storage box 7 and are discharged through the discharge pipe 8. The coarse particles will flow back to the inside of the feeding pipe 4 for the next level of screening. When the particle size is required to be fine, the upper and lower discharge pipes 8 can be separated by the reversing valve 10. Turning the discharge pipe 8 can also make the material storage box 7 rotate through the sealed bearing 71, which is convenient for the staff to collect.

[0051] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0052] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0053] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A waste slag granulation multi-stage screening device, comprising a pneumatic drive mechanism (1) and a storage bin (2), characterized in that: A feeding cylinder (3) is fixedly arranged on one side of the storage bin (2) corresponding to the pneumatic drive mechanism (1); the output end of the pneumatic drive mechanism (1) is connected to the interior of the feeding cylinder (3); a feeding pipe (4) is fixedly installed on the upper end of the feeding cylinder (3); the feeding pipe (4) extends to one side of the pneumatic drive mechanism (1) and the storage bin (2); a support base (5) is fixedly installed on the bottom of one end of the feeding pipe (4) away from the feeding cylinder (3); the bottom side of the support base (5) is fixedly installed on the ground by bolts; A plurality of evenly distributed arc-shaped screen tubes (6) are fixedly mounted on the feeding pipe (4), both ends of the arc-shaped screen tubes (6) extend into the interior of the feeding pipe (4), a plurality of material storage boxes (7) corresponding to the arc-shaped screen tubes (6) are fixedly mounted on the outside of the feeding pipe (4), the arc-shaped screen tubes (6) are arranged inside the material storage box (7), the interior of the feeding pipe (4) is connected to the interior of the material storage box (7) through the arc-shaped screen tubes (6), a discharge pipe (8) is fixedly mounted on the outside of the material storage box (7), and the interior of the material storage box (7) is connected to the outside through the discharge pipe (8).

2. The waste slag granulation multi-stage screening device according to claim 1, characterized in that: The arc-shaped screen tube (6) is provided with a plurality of evenly distributed fine screen holes (61), a group of the arc-shaped screen tubes (6) corresponds to one material storage box (7), and the mesh diameters of the fine screen holes (61) on the plurality of the arc-shaped screen tubes (6) increase from top to bottom.

3. The waste slag granulation multi-stage screening device according to claim 1, characterized in that: A plurality of the material storage boxes (7) are sleeved on the outer wall of the feeding pipe (4) in groups of two, a sealing bearing (71) is fixedly connected between two of the material storage boxes (7), and the plurality of the material storage boxes (7) are rotatably arranged on the outer wall of the feeding pipe (4) via the sealing bearing (71).

4. The waste slag granulation multi-stage screening device according to claim 1, characterized in that: The discharge pipes (8) located on the same group of material storage boxes (7) are interconnected, a cross connecting pipe (9) is fixedly installed at the node of the two discharge pipes (8), and a reversing valve (10) is rotatably arranged inside the cross connecting pipe (9).

5. The waste slag granulation multi-stage screening device according to claim 1, characterized in that: The pneumatic drive mechanism (1) comprises a servo motor (11) and a blower (12) fixedly mounted on one side of the servo motor (11); the output end of the blower (12) is connected to the interior of the feed barrel (3); a coupling (13) is fixedly mounted on the same side of the servo motor (11) and the blower (12); the servo motor (11) drives the blower (12) to rotate via the coupling (13).

6. The waste slag granulation multi-stage screening device according to claim 5, characterized in that: The output end of the servo motor (11) passes through the coupling (13) and extends to the outside of the coupling (13). The output end of the servo motor (11) is fixedly connected to a screw rod (14). The screw rod (14) is rotatably arranged on a side of the coupling (13) away from the servo motor (11).

7. The waste slag granulation multi-stage screening device according to claim 6, characterized in that: A vertical shaft (15) is rotatably provided on one side of the pneumatic drive mechanism (1) away from the coupling (13), a gear (16) is fixedly mounted on the vertical shaft (15), the gear (16) is meshed with the screw (14), and a dragon lifting rod (17) is fixedly connected to the upper end of the vertical shaft (15), and the dragon lifting rod (17) extends into the interior of the feed barrel (3).

8. The waste slag granulation multi-stage screening device according to claim 7, characterized in that: A bin bottom discharge pipe (21) is fixedly provided at the bottom of the storage bin (2) on one side corresponding to the feeding cylinder (3); the interior of the storage bin (2) is connected to the interior of the feeding cylinder (3) via the bin bottom discharge pipe (21); the bin bottom discharge pipe (21) corresponds to the bottom end of the dragon lifting rod (17); and the output end of the blower (12) corresponds to the upper end of the dragon lifting rod (17).

9. The waste slag granulation multi-stage screening device according to claim 1, characterized in that: A plurality of evenly distributed C-shaped collars (18) are fixedly arranged inside the feeding pipe (4); the outlet of the arc-shaped screen pipe (6) inside the feeding pipe (4) is arranged between two of the C-shaped collars (18); and an impeller (19) is rotatably arranged inside the C-shaped collar (18).

10. The waste slag granulation multi-stage screening device according to claim 9, characterized in that: An impeller (19) is rotatably arranged inside the C-shaped collar (18), and a plurality of uniformly distributed steel balls (20) are rotatably arranged between the outer wall of the impeller (19) and the inner wall of the C-shaped collar (18). The impeller (19) is rotatably arranged on the inner side of the C-shaped collar (18) via the steel balls (20).

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