Transportation device with screening function for pellet iron ore concentrate stock bin

Abstract

A conveying device with a screening function for a pellet iron ore concentrate stock bin comprises a first-layer platform, an inclined platform and a conveying belt. The first-layer platform is horizontally arranged, and the inclined platform is obliquely arranged. And one end of the first-layer platform is connected with the higher end of the inclined platform. And a headstock is arranged at the side part of the other end of the first-layer platform. And a tailstock is arranged at the lower end of the inclined platform. And a middle support frame is arranged between the headstock and the tailstock. And a feeding roller and a driving roller are arranged on the headstock. And a tail roller is arranged on the tail frame. The conveying belt sequentially bypasses the feeding roller, the driving roller and the tail roller and then returns to the feeding roller along the middle supporting frame to form a closed loop. A sundry sieve is arranged on the side part of the headstock. And a feeding hole of the impurity sieve is connected with a discharging end of the conveying belt. And a stock bin is arranged below the impurity sieve. And an iron remover is arranged on the conveying belt and is positioned above the first-layer platform. According to the utility model, the pellet iron ore concentrate can be efficiently transported and stored, waste iron devices and waste sundries can be effectively removed before pelletizing or storage, and the purity of the iron ore concentrate is improved.

Description

Technical Field

[0001] The utility model relates to the impurity removal and transportation of pelletized iron ore concentrate, in particular to a pelletized iron ore concentrate silo with a screening transport device, belonging to the technical field of iron ore pellet production. Background Art

[0002] Steel is an important food for industry, an important guarantee for construction, and an important support for the economy. As the most important raw material industry, the steel industry provides steel products that meet the needs of social development, national security, and people's lives.

[0003] The iron-containing materials loaded into the blast furnace are mainly natural rich iron ore (lump ore), sintered ore and pelletized ore. Natural rich iron ore is becoming increasingly scarce, requiring the production of large quantities of high-grade concentrate. In order to improve the technical and economic indicators of ore dressing, it is necessary to finely grind the iron ore. Too fine concentrate powder is difficult to sinter, and roasting pelletized ore is an effective way to process finely ground concentrate.

[0004] The existing main pelletizing process is to mix iron ore concentrate and bentonite, then make pellets on a pelletizing machine, and then dry, preheat, roast, high-temperature consolidate, and cool the made pellets to obtain finished pellets. The pelletizing link in the existing pelletizing process is extremely important. If the pelletizing effect is not good, it will inevitably affect the subsequent roasting and the yield will be greatly reduced. There are many factors that affect pelletizing, among which the more important ones are that the iron concentrate has fewer impurities and a larger specific surface area of ​​the particles. Before increasing the specific surface area of ​​the particles, the impurities in the iron concentrate need to be removed, otherwise the lifting process and results will be affected. The existing technology generally mixes the original iron concentrate with bentonite directly for pelletizing, and rarely removes impurities from the iron concentrate and increases the specific surface area of ​​the particles; even if the original iron concentrate is used to increase the specific surface area of ​​the particles, due to site limitations, the iron concentrate is loaded into the silo and then simply processed by the crusher at the bottom of the silo. Since no impurities are removed before increasing the specific surface area, the lifting effect is very poor, and the damage to the crusher is increased. After the cost increases, the lifting has to be abandoned, entering a vicious circle. However, such raw iron ore is directly mixed with bentonite for pelletizing, and the quality of the balls produced in this way is not high. Finally, after roasting, the pellets with poor quality are obtained, which further affects the smelting of the blast furnace.

[0005] Therefore, it is necessary to develop and design an iron ore concentrate silo with a transport device and method for screening and impurity removal to solve the problems in the above-mentioned prior art. Utility Model Content

[0006] In view of the problem that the quality of pelletizing is reduced due to the inability to remove impurities and transport the iron concentrate well in the above-mentioned existing iron ore pelletizing production process, the utility model proposes a pelletizing iron concentrate silo with screening transport device. In the scheme of the utility model, the transport device includes a layer platform and an inclined platform connected to the layer platform, and a head frame and a tail frame are respectively arranged at both ends of the layer platform and the inclined platform, and an intermediate support frame is arranged between the head frame and the tail frame. The conveyor belt successively passes around the feeding roller and the driving roller arranged on the head frame, and the tail roller arranged on the tail frame, and then returns to the feeding roller along the intermediate support frame to form a closed loop, thereby transporting the material. A debris screen is arranged on the side of the head frame, and a silo is arranged below the debris screen; an iron remover is arranged on the conveyor belt above the layer platform; the arrangement of the debris screen and the iron remover can effectively solve the problem of removing impurities of pelletizing iron concentrate before pelletizing or storage in the prior art. Therefore, the utility model can be used to efficiently transport and store pelletized iron concentrate, and can also effectively remove scrap iron and waste before pelletizing or storage, thereby improving the purity of the iron concentrate and reducing impurities.

[0007] According to an implementation scheme of the utility model, a pellet iron concentrate silo transport device with screening is provided.

[0008] A pellet iron concentrate silo with screening transport device, the device comprises a first-layer platform, an inclined platform, a head frame, a tail frame, an intermediate support frame, a feed roller, a drive roller, a tail roller, a conveyor belt, a debris screen, a silo, and an iron remover. Among them, the first-layer platform is arranged horizontally, and the inclined platform is arranged obliquely. One end of the first-layer platform is connected to the higher end of the inclined platform. A head frame is arranged on the side of the other end of the first-layer platform. A tail frame is arranged on the lower end of the inclined platform. An intermediate support frame is arranged between the head frame and the tail frame and above the first-layer platform and the inclined platform. A feed roller and a drive roller are arranged on the head frame. A tail roller is arranged on the tail frame. The conveyor belt passes around the feed roller, the drive roller, and the tail roller in turn, and then returns to the feed roller along the intermediate support frame to form a closed loop. A debris screen is arranged on the side of the head frame. The feed port of the debris screen is connected to the discharge end of the conveyor belt. A silo is arranged below the debris screen. The screened material outlet of the debris screen is connected to the feed port of the silo. An iron remover is provided on the conveyor belt, and the iron remover is located above a platform.

[0009] Preferably, the device further comprises a tensioning device. The tensioning device comprises a tensioning first redirecting roller, a tensioning second redirecting roller, a tensioning base, a tensioning roller, a tensioning weight, and a tensioning weight guide rod. The tensioning base is arranged on a platform. The tensioning first redirecting roller and the tensioning second redirecting roller are respectively arranged at two ends of the tensioning base. The tensioning roller is arranged below a platform and between the tensioning first redirecting roller and the tensioning second redirecting roller. The conveyor belt sequentially passes around the feeding roller, the driving roller, the tensioning first redirecting roller, the tensioning roller, the tensioning second redirecting roller, and the tail roller to form a closed loop. The tensioning weight is arranged below the tensioning roller. The tensioning weight guide rod is arranged vertically, the upper end of the tensioning weight guide rod is connected to the tensioning roller, and the lower part of the tensioning weight guide rod is slidably connected to the tensioning weight.

[0010] In the utility model, the device also includes a second-layer platform, a third-layer platform, and a fourth-layer platform arranged in sequence from top to bottom. Among them, the second-layer platform is located below the first-layer platform. The head frame and the debris screen are arranged on the second-layer platform. The tensioning weight guide rod of the tensioning device is arranged on the third-layer platform. The tail frame is arranged on the fourth-layer platform.

[0011] Preferably, a first connecting ladder is provided between the first platform and the second platform. A second connecting ladder is provided between the second platform and the third platform. A third connecting ladder is provided between the third platform and the fourth platform. Preferably, the length of the first connecting ladder is shorter than the length of the second connecting ladder, and the length of the second connecting ladder is shorter than the length of the third connecting ladder.

[0012] In the utility model, the debris screen is tilted. A mobile debris box is provided at the lower end of the debris screen. The screened material outlet of the debris screen is connected to the feed port of the mobile debris box. A head funnel is provided at the higher end of the debris screen. The discharge end of the conveyor belt is connected to the feed port of the debris screen through the head funnel.

[0013] Preferably, a debris screen baffle plate is provided on the top of the debris screen. Preferably, a material discharge chute is connected to the screen outlet of the debris screen. The material discharge chute extends into the feed port of the silo.

[0014] In the utility model, the lower ends of the debris screen are provided with a low support leg of the debris screen and a high support leg of the debris screen, wherein the high support leg of the debris screen is a telescopic structure. Preferably, the inclination angle of the debris screen is 10 to 15 degrees.

[0015] In the utility model, the inclination angle of the inclined platform is 5 to 30 degrees.

[0016] In the utility model, along the direction from the first platform to the inclined platform, the head frame includes a head frame front leg, a head frame middle leg, and a head frame rear leg, which are vertically arranged on the second platform in sequence. The lower part between the head frame front leg, the head frame middle leg, and the head frame rear leg is connected with a head frame lower crossbeam. The upper part between the head frame middle leg and the head frame rear leg is connected with a head frame upper crossbeam. The upper part between the head frame front leg and the head frame middle leg is connected with a feeding roller support beam. A feeding roller support seat is provided at the connection between the feeding roller support beam and the head frame front leg. The feeding roller is arranged on the feeding roller support seat. A driving roller support seat is provided at the lower part of the head frame middle leg near the head frame lower crossbeam. The driving roller is arranged on the driving roller support seat.

[0017] Preferably, the device further comprises a first head surface increasing wheel and a second head surface increasing wheel. A first head surface increasing wheel support seat is provided at the upper part of the middle leg of the head frame near the support beam of the feeding roller. The first head surface increasing wheel is arranged on the first head surface increasing wheel support seat. A second head surface increasing wheel support seat is provided at the upper part of the rear leg of the head frame near the upper cross beam of the head frame. The second head surface increasing wheel is arranged on the second head surface increasing wheel support seat.

[0018] In the utility model, the device also includes a tail surface increasing wheel arranged on the tail frame. The conveyor belt sequentially passes through the feeding roller, the first head surface increasing wheel, the driving roller, the second head surface increasing wheel, the tensioning first redirecting roller, the tensioning roller, the tensioning second redirecting roller, the tail surface increasing wheel, and the tail roller to form a closed loop.

[0019] Preferably, the feed roller support beam is set at a lower height than the head frame upper cross beam. The first head surface increasing wheel support seat is set at a lower height than the second head surface increasing wheel support seat.

[0020] In the utility model, a gate valve is provided at the bottom of the silo. Preferably, the distance between the gate valve and the four-layer platform is greater than 2m.

[0021] In the utility model, the intermediate support frame includes a straight section and a curved section. The straight section is located above the first platform and the inclined platform respectively, and the curved section is located above the connection position between the first platform and the inclined platform. Preferably, a waist drum-shaped support wheel is also provided on the intermediate support frame of the curved section.

[0022] Preferably, a plurality of intermediate support frame legs are spaced apart between the intermediate support frame and a layer of the platform, and between the intermediate support frame and the inclined platform.

[0023] Aiming at the problem that the quality of pelletizing is reduced due to the inability to remove impurities and transport the iron concentrate well in the existing iron ore pelletizing process, the utility model proposes a pelletizing iron concentrate silo with screening transport device. In the scheme of the utility model, the transport device includes a layer platform and an inclined platform connected to the layer platform, a head frame and a tail frame are respectively arranged at both ends of the layer platform and the inclined platform, and an intermediate support frame is arranged between the head frame and the tail frame, and the conveyor belt sequentially bypasses the feeding roller and the driving roller arranged on the head frame, and the tail roller arranged on the tail frame, and then returns to the feeding roller along the intermediate support frame to form a closed loop, thereby transporting the material. A debris screen is arranged on the side of the head frame, and a silo is arranged below the debris screen; an iron remover is arranged above the layer platform on the conveyor belt; the arrangement of the debris screen and the iron remover can effectively solve the problem of removing impurities of pelletizing iron concentrate before pelletizing or storage in the prior art. Therefore, the utility model can be used to efficiently transport and store pelletizing iron concentrate, and can also effectively remove waste iron and waste debris before pelletizing or storage, thereby improving the purity of the iron concentrate and reducing impurities.

[0024] Taking into account the fluctuation of iron concentrate transportation volume, which will cause the conveyor belt to become loose and affect transportation, the utility model arranges a three-layer platform between the second-layer platform and the fourth-layer platform, which is used to set the tensioning device of the conveyor belt of the transportation device, and by arranging the first tensioning redirecting roller, the second tensioning redirecting roller, the tensioning roller and the tensioning weight, the tensioning distance of the conveyor belt can be increased, the transportation distance of the conveyor belt can be further extended, the application range of the conveyor belt is improved, and the service life of the conveyor belt is extended; the area of ​​the three-layer platform is not large, which saves construction costs, and plays a role of connecting the upper and lower parts, and has a strong transition.

[0025] like Figure 1 As shown, the utility model includes a first-layer platform, a second-layer platform, a third-layer platform, and a fourth-layer platform arranged in sequence from top to bottom. The first-layer platform is connected to the second-layer platform through a first connecting ladder, the second-layer platform is connected to the third-layer platform through a second connecting ladder, the third-layer platform is connected to the fourth-layer platform through a third connecting ladder, and the lower end of the inclined platform is connected to the fourth-layer platform. The arrangement of the first connecting ladder, the second connecting ladder, and the third connecting ladder can not only form a circulation path together with the inclined platform to become an organic whole, but also facilitate rapid inspection and maintenance of the platform devices on each layer. As a preferred solution, the length of the first connecting ladder is less than the length of the second connecting ladder, and the length of the second connecting ladder is less than the length of the third connecting ladder; such an arrangement can reduce the vertical distance between the first-layer platform, the second-layer platform, the third-layer platform, and the fourth-layer platform as much as possible, further reducing the construction cost. In addition, the utility model arranges the first-layer platform higher than the second-layer platform, so that the inclined platform can cross higher obstacles, greatly increasing the scope of application, while avoiding the increase in construction costs caused by the second-layer platform being too high.

[0026] The utility model arranges the iron remover on the conveyor belt and above the first platform, which not only saves the use area of ​​the first platform but also does not occupy any area of ​​other platforms. Moreover, on the first platform, the overall height of the iron remover can be reduced, saving construction costs.

[0027] The utility model sets the head frame and the debris screen on the second-layer platform, which can save the construction area of ​​the second-layer platform. Through the organic connection of the special head frame and the debris screen, the height of the debris screen can be increased, the fluidity of the iron concentrate can be improved, and the effective screening efficiency is guaranteed. The utility model sets the debris screen at an angle, and sets a mobile debris box at the lower end of the debris screen, which can not only collect the debris screened by the debris screen, but also move to the iron remover to collect the iron impurities removed by the iron remover. One box has multiple uses, saving manpower and material resources, and saving costs. In the debris screen of the utility model, the height of the short legs of the debris screen is fixed, and the inclination angle is adjusted by telescopically adjusting the high legs of the debris screen, so that the inclination angle is 10° to 15°, which can regulate the screening efficiency of the iron concentrate. When the debris in the iron concentrate is large and numerous, the angle is increased, and when the debris in the iron concentrate is small and few, the angle is reduced. It has high flexibility and a wide range of applications.

[0028] The utility model sets a gate valve at the discharge port below the silo. The gate valve can be opened at any time for unloading and can also be closed for storage of iron concentrate. The distance between the gate valve of the silo and the four-layer platform is set to be greater than 2m, so that more iron concentrate processing equipment can be set between the gate valve and the four-layer platform, which can further improve the processing effect of iron concentrate and improve the performance of subsequent iron concentrate pelletizing.

[0029] Since different iron concentrates have different stacking angles, the inclination angle of the inclined platform in the utility model (the angle formed by the plane where the inclined platform is located and the horizontal plane, generally an acute angle) ranges from 5° to 30°, and various types of iron concentrates can be transported. At the same time, when the height of one platform is determined, the floor area of ​​the transportation device can be adjusted by changing the angle of the inclined platform, which has a wide range of applications and strong flexibility.

[0030] The special structural setting of the head frame in the utility model can adjust the height of the head frame as needed. By setting the first head surface increase wheel and the second head surface increase wheel at special positions, the contact area of ​​the conveyor belt on the driving roller can be increased, the friction force can be increased, the driving transmission effect can be improved, the feeding roller can better fit the debris screen, no leakage will occur, and the iron ore concentrate can be better spread on the debris screen, further improving the screening efficiency. The driving roller is set at the bottom of the head frame, which is not only convenient for installing the driving motor, but also convenient for repairing the motor, avoiding safety problems caused by the motor being too high, and can also reduce the installation cost of the driving device.

[0031] The utility model arranges a curved intermediate support frame (i.e., a curved section of the intermediate support frame) at the connection between the first platform and the inclined platform, which can enhance the transition and prevent the iron concentrate from sliding backwards at this location; a waist drum-shaped supporting wheel is arranged in the middle of the curved intermediate support frame to support the curved section conveyor belt, which can smoothly transport the iron concentrate from the inclined platform to the first platform, improves the smoothness of transportation, and further prevents the iron concentrate from sliding backwards at this location.

[0032] The utility model only arranges the middle support frame legs on the inclined platform and the first-layer platform, which can save the area of ​​the second-layer platform. Only short middle support frame legs are needed instead of tall middle support frame legs, which saves costs. The middle support frame legs of uniform height are also convenient to manufacture and install.

[0033] The utility model arranges the tail frame at the lower end of the inclined platform, which can extend the conveying distance of the iron ore concentrate and facilitate the loading of the iron ore concentrate. The triangular tail frame can be used to bear the tail roller and the tail surface increase wheel, and the stability can be improved.

[0034] The utility model system components are organized in an orderly and reasonable manner, the layout site requirements are small, the land resources are greatly saved, and various terrain requirements can be met, and the scope of application is wide. Moreover, the utility model system design is simple and ingenious, the overall degree of automation is high, the iron ore concentrate transportation method is energy-saving and environmentally friendly, and the engineering economic benefits are excellent.

[0035] The transportation method of the pelletized iron ore silo belt screening and transportation device of the utility model is as follows: first, the iron ore (for example, the iron ore with a moisture content of ≤8.5%) is transported to the fourth-layer platform near the tail frame, and then the iron ore is loaded onto the conveyor belt near the tail roller, and the driving roller is started. The driving roller rotates to drive the conveyor belt to move from the tail roller to the feeding roller, and the iron ore is transported away, first through the inclined platform, and then to the first-layer platform, and the iron remover removes the waste iron blocks, waste bolts, waste iron sheets and other iron objects in the iron ore through the iron remover. The iron ore is sucked away by the electromagnet of the iron remover, and then the iron concentrate is sent to the feeding roller on the head frame of the second-level platform, and the feeding roller then sends the iron concentrate into the head funnel, and the head funnel then sends the iron concentrate into the debris screen through the debris screen baffle plate for screening, and the screened iron concentrate enters the silo through the discharge chute for storage, the debris screen screens out the wood blocks, woven bags, large plastics and other debris in the iron concentrate, and discharges the debris into the mobile debris box, the iron concentrate in the silo can be stored for a long time, and can also be discharged through the plug valve at the bottom of the silo for use.

[0036] After the conveyor belt transports the iron concentrate to the feeding roller, it bypasses the feeding roller and enters the return section. In the return section, the conveyor belt bypasses the first head surface increasing wheel, the driving roller, the second head surface increasing wheel in turn, and then bypasses the tensioning first redirecting roller, the tensioning roller, the tensioning second redirecting roller, and then bypasses the tail surface increasing wheel and returns to the tail roller, and then carries the iron concentrate for transportation until the silo is full, and then stops driving the roller. When the iron concentrate in the silo is discharged, the driving roller starts again to drive the conveyor belt to operate and transport the iron concentrate, and this cycle repeats over and over again.

[0037] Due to the fluctuation of iron ore concentrate transportation volume, the conveyor belt will become loose and affect transportation. At this time, the tensioning weight on the three-layer platform will be increased in weight. The tensioning weight will move downward along the tensioning weight guide rod due to the increase in gravity, pulling the tensioning roller to move downward. The tensioning roller will also pull the conveyor belt downward, and then the conveyor belt of the entire system will be tensioned again, thereby increasing the conveying capacity and efficiency.

[0038] Compared with the prior art, the utility model has the following beneficial effects:

[0039] 1. The utility model can efficiently transport and store pelletized iron concentrate, and can effectively remove scrap iron and waste before pelletizing or storage, thereby improving the purity of the iron concentrate and reducing impurities, thereby improving the subsequent pelletizing quality.

[0040] 2. The utility model includes a first-layer platform, a second-layer platform, a third-layer platform, and a fourth-layer platform arranged in sequence from top to bottom. Adjacent platforms are connected by connecting ladders, so that each platform and the inclined platform form a circulation path, becoming an organic whole, which is convenient for rapid inspection and maintenance of each platform device. Moreover, the length of the first connecting ladder from top to bottom is less than the length of the second connecting ladder, and the length of the second connecting ladder is less than the length of the third connecting ladder. Such an arrangement can reduce the vertical distance between the first-layer platform, the second-layer platform, the third-layer platform, and the fourth-layer platform as much as possible, further reducing the construction cost. In addition, the utility model sets the first-layer platform higher than the second-layer platform, so that the inclined platform can cross higher obstacles, greatly increasing the scope of application, while avoiding the increase in construction costs caused by the second-layer platform being too high.

[0041] 3. Considering that the transportation volume of iron ore fluctuates, which may cause the conveyor belt to become loose and affect transportation, the utility model arranges a three-layer platform between the second-layer platform and the fourth-layer platform, which is used to set a tensioning device for the conveyor belt of the transport device. By setting a tensioning first redirecting roller, a tensioning second redirecting roller, a tensioning roller and a tensioning weight, the tensioning distance of the conveyor belt can be increased, the transportation distance of the conveyor belt can be further extended, the applicable scope of the conveyor belt is improved, and the service life of the conveyor belt is extended; the three-layer platform is not large in area, which saves construction costs, and plays a connecting role, with strong transition.

[0042] 4. The special structural setting of the head frame in the utility model can adjust the height of the head frame as needed. By arranging the first head surface increasing wheel and the second head surface increasing wheel at special positions, the contact area of ​​the conveyor belt on the driving roller can be increased, the friction force is increased, the drive transmission effect is improved, the feeding roller can better fit the debris screen without leakage, and the iron concentrate can be better spread on the debris screen, further improving the screening efficiency.

[0043] 5. Due to the different stacking angles of different iron ore concentrates, the inclined angle of the inclined platform in the utility model ranges from 5° to 30°, which can transport various types of iron ore concentrates. The utility model debris screen can adjust the inclination angle to 10° to 15° through the telescopic adjustment of the high legs of the debris screen, which can adjust the screening efficiency of the iron ore concentrate.

[0044] The utility model has a simple and ingenious structural design and a high overall degree of automation, can meet the requirements of various terrains, has a wide range of applications, is energy-saving and environmentally friendly in its iron ore conveying method, and has excellent engineering economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the structure of a pellet iron concentrate silo with screening transport device of the utility model;

[0046] Figure 2 It is an enlarged view of the position of the head frame and the debris screen in the utility model.

[0047] Reference numerals:

[0048] 101: 1st floor platform; 102: 2nd floor platform; 103: 3rd floor platform; 104: 4th floor platform; 2: inclined platform; 3: head frame; 301: front support leg of head frame; 302: middle support leg of head frame; 303: rear support leg of head frame; 304: lower crossbeam of head frame; 305: upper crossbeam of head frame; 306: support beam of feeding roller; 4: tail frame; 5: middle support frame; 501: waist drum-shaped supporting wheel; 502: support leg of middle support frame; 6: feeding roller; 601: support seat of feeding roller; 7: driving roller; 701: support seat of driving roller; 8: tail roller; 9: conveyor belt; 10: debris screen; 1001: debris screen baffle plate; 1002: low support leg of debris screen; 100 3: high support legs for debris screen; 11: silo; 12: iron remover; 13: tensioning device; 1301: tensioning the first redirecting roller; 1302: tensioning the second redirecting roller; 1303: tensioning base; 1304: tensioning roller; 1305: tensioning weight; 1306: tensioning weight guide rod; 1401: first connecting ladder; 1402: second connecting ladder; 1403: third connecting ladder; 15: mobile debris box; 16: head hopper; 17: unloading chute; 18: first head surface increasing wheel; 1801: first head surface increasing wheel support seat; 19: second head surface increasing wheel; 1901: second head surface increasing wheel support seat; 20: tail surface increasing wheel; 21: gate valve. DETAILED DESCRIPTION

[0049] The technical solution of the utility model is illustrated below, and the scope of protection requested for the utility model includes but is not limited to the following embodiments.

[0050] According to an implementation scheme of the utility model, a pellet iron concentrate silo transport device with screening is provided.

[0051] A pellet iron concentrate silo with screening transport device, the device comprises a first-layer platform 101, an inclined platform 2, a head frame 3, a tail frame 4, an intermediate support frame 5, a feed roller 6, a drive roller 7, a tail roller 8, a conveyor belt 9, a debris screen 10, a silo 11, and an iron remover 12. Among them, the first-layer platform 101 is horizontally arranged, and the inclined platform 2 is inclined. One end of the first-layer platform 101 is connected to the higher end of the inclined platform 2. The other end of the first-layer platform 101 is provided with a head frame 3 on the side. The lower end of the inclined platform 2 is provided with a tail frame 4. An intermediate support frame 5 is provided between the head frame 3 and the tail frame 4 and above the first-layer platform 101 and the inclined platform 2. A feed roller 6 and a drive roller 7 are provided on the head frame 3. A tail roller 8 is provided on the tail frame 4. The conveyor belt 9 passes around the feed roller 6, the drive roller 7, and the tail roller 8 in sequence, and then returns to the feed roller 6 along the intermediate support frame 5 to form a closed loop. A debris screen 10 is provided on the side of the head frame 3. The feed port of the debris screen 10 is connected to the discharge end of the conveyor belt 9. A silo 11 is provided below the debris screen 10. The screened material outlet of the debris screen 10 is connected to the feed port of the silo 11. An iron remover 12 is provided on the conveyor belt 9, and the iron remover 12 is located above a platform 101.

[0052] Preferably, the device further comprises a tensioning device 13. The tensioning device 13 comprises a tensioning first redirecting roller 1301, a tensioning second redirecting roller 1302, a tensioning base 1303, a tensioning roller 1304, a tensioning weight 1305, and a tensioning weight guide rod 1306. The tensioning base 1303 is arranged on a first-layer platform 101. The tensioning first redirecting roller 1301 and the tensioning second redirecting roller 1302 are respectively arranged at two ends of the tensioning base 1303. The tensioning roller 1304 is arranged below a first-layer platform 101 and is located between the tensioning first redirecting roller 1301 and the tensioning second redirecting roller 1302. The conveyor belt 9 sequentially passes around the feeding roller 6, the driving roller 7, the tensioning first redirecting roller 1301, the tensioning roller 1304, the tensioning second redirecting roller 1302, and the tail roller 8 to form a closed loop. The tensioning weight 1305 is arranged below the tensioning roller 1304. The tensioning weight guide rod 1306 is vertically arranged, the upper end of the tensioning weight guide rod 1306 is connected to the tensioning roller 1304, and the lower part of the tensioning weight guide rod 1306 is slidably connected to the tensioning weight 1305.

[0053] In the present invention, the device further comprises a second-layer platform 102, a third-layer platform 103, and a fourth-layer platform 104 which are arranged in sequence from top to bottom. The second-layer platform 102 is located below the first-layer platform 101. The head frame 3 and the debris screen 10 are arranged on the second-layer platform 102. The tensioning weight guide rod 1306 of the tensioning device 13 is arranged on the third-layer platform 103. The tail frame 4 is arranged on the fourth-layer platform 104.

[0054] Preferably, a first connecting ladder 1401 is provided between the first-floor platform 101 and the second-floor platform 102. A second connecting ladder 1402 is provided between the second-floor platform 102 and the third-floor platform 103. A third connecting ladder 1403 is provided between the third-floor platform 103 and the fourth-floor platform 104. Preferably, the length of the first connecting ladder 1401 is shorter than the length of the second connecting ladder 1402, and the length of the second connecting ladder 1402 is shorter than the length of the third connecting ladder 1403.

[0055] In the present invention, the debris screen 10 is tilted. A mobile debris box 15 is provided at the lower end of the debris screen 10. The screened material outlet of the debris screen 10 is connected to the feed port of the mobile debris box 15. A head funnel 16 is provided at the higher end of the debris screen 10. The discharge end of the conveyor belt 9 is connected to the feed port of the debris screen 10 through the head funnel 16.

[0056] Preferably, a debris screen material retaining plate 1001 is further provided on the top of the debris screen 10. Preferably, a material discharge chute 17 is further connected to the screen outlet of the debris screen 10. The material discharge chute 17 extends into the feed port of the silo 11.

[0057] In the present invention, a debris screen short support leg 1002 and a debris screen high support leg 1003 are respectively provided at the two ends below the debris screen 10. The debris screen high support leg 1003 is a telescopic structure. Preferably, the inclination angle of the debris screen 10 is 10-15°.

[0058] In the present invention, the inclination angle of the inclined platform 2 is 5 to 30°.

[0059] In the utility model, along the direction from the first-layer platform 101 to the inclined platform 2, the head frame 3 includes a head frame front leg 301, a head frame middle leg 302, and a head frame rear leg 303 which are vertically arranged on the second-layer platform 102 in sequence. The lower part between the head frame front leg 301, the head frame middle leg 302, and the head frame rear leg 303 is connected with a head frame lower cross beam 304. The upper part between the head frame middle leg 302 and the head frame rear leg 303 is connected with a head frame upper cross beam 305. The upper part between the head frame front leg 301 and the head frame middle leg 302 is connected with a feed roller support beam 306. A feed roller support seat 601 is provided at the connection between the feed roller support beam 306 and the head frame front leg 301. The feed roller 6 is arranged on the feed roller support seat 601. A driving roller support seat 701 is provided at the lower part of the head frame middle leg 302 near the head frame lower cross beam 304. The driving roller 7 is arranged on a driving roller supporting seat 701 .

[0060] Preferably, the device further comprises a first head surface increasing wheel 18 and a second head surface increasing wheel 19. A first head surface increasing wheel support seat 1801 is provided at the upper part of the head frame middle support leg 302 near the feed roller support beam 306. The first head surface increasing wheel 18 is arranged on the first head surface increasing wheel support seat 1801. A second head surface increasing wheel support seat 1901 is provided at the upper part of the head frame rear support leg 303 near the head frame upper crossbeam 305. The second head surface increasing wheel 19 is arranged on the second head surface increasing wheel support seat 1901.

[0061] In the utility model, the device also includes a tail surface increasing wheel 20 arranged on the tail frame 4. The conveyor belt 9 sequentially passes through the feeding roller 6, the first head surface increasing wheel 18, the driving roller 7, the second head surface increasing wheel 19, the tensioning first redirecting roller 1301, the tensioning roller 1304, the tensioning second redirecting roller 1302, the tail surface increasing wheel 20, and the tail roller 8 to form a closed loop.

[0062] As a preference, the setting height of the feed roller support beam 306 is lower than the head frame upper cross beam 305. The setting height of the first head surface increasing wheel support seat 1801 is lower than the second head surface increasing wheel support seat 1901.

[0063] In the present invention, a gate valve 21 is provided at the bottom of the silo 11. Preferably, the distance between the gate valve 21 and the four-layer platform 104 is greater than 2 m.

[0064] In the present invention, the intermediate support frame 5 includes a straight section and a curved section. The straight section is located above the first-layer platform 101 and the inclined platform 2, respectively, and the curved section is located above the connection position between the first-layer platform 101 and the inclined platform 2. Preferably, a waist drum-shaped support wheel 501 is also provided on the intermediate support frame 5 of the curved section.

[0065] Preferably, a plurality of intermediate support frame legs 502 are spaced apart between the intermediate support frame 5 and the first-layer platform 101 and between the intermediate support frame 5 and the inclined platform 2 .

[0066] Example 1

[0067] like Figure 1-2As shown, a transport device for pelletized iron concentrate silo with screening includes a first-layer platform 101, an inclined platform 2, a head frame 3, a tail frame 4, an intermediate support frame 5, a feed roller 6, a drive roller 7, a tail roller 8, a conveyor belt 9, a debris screen 10, a silo 11, and an iron remover 12. Among them, the first-layer platform 101 is horizontally arranged, and the inclined platform 2 is inclined. One end of the first-layer platform 101 is connected to the higher end of the inclined platform 2. The head frame 3 is provided on the side of the other end of the first-layer platform 101. The tail frame 4 is provided at the lower end of the inclined platform 2. An intermediate support frame 5 is provided between the head frame 3 and the tail frame 4 and above the first-layer platform 101 and the inclined platform 2. A feed roller 6 and a drive roller 7 are provided on the head frame 3. A tail roller 8 is provided on the tail frame 4. The conveyor belt 9 passes around the feed roller 6, the drive roller 7, and the tail roller 8 in sequence, and then returns to the feed roller 6 along the intermediate support frame 5 to form a closed loop. A debris screen 10 is provided on the side of the head frame 3. The feed port of the debris screen 10 is connected to the discharge end of the conveyor belt 9. A silo 11 is provided below the debris screen 10. The screened material outlet of the debris screen 10 is connected to the feed port of the silo 11. An iron remover 12 is provided on the conveyor belt 9, and the iron remover 12 is located above a platform 101.

[0068] Example 2

[0069] Example 1 is repeated, except that the device further includes a tensioning device 13. The tensioning device 13 includes a tensioning first redirecting roller 1301, a tensioning second redirecting roller 1302, a tensioning base 1303, a tensioning roller 1304, a tensioning weight 1305, and a tensioning weight guide rod 1306. Among them, the tensioning base 1303 is arranged on a first-layer platform 101. The tensioning first redirecting roller 1301 and the tensioning second redirecting roller 1302 are respectively arranged at two ends of the tensioning base 1303. The tensioning roller 1304 is arranged below the first-layer platform 101 and is located between the tensioning first redirecting roller 1301 and the tensioning second redirecting roller 1302. The conveyor belt 9 sequentially passes around the feeding roller 6, the driving roller 7, the tensioning first redirecting roller 1301, the tensioning roller 1304, the tensioning second redirecting roller 1302, and the tail roller 8 to form a closed loop. The tensioning weight 1305 is arranged below the tensioning roller 1304. The tensioning weight guide rod 1306 is vertically arranged, the upper end of the tensioning weight guide rod 1306 is connected to the tensioning roller 1304, and the lower part of the tensioning weight guide rod 1306 is slidably connected to the tensioning weight 1305.

[0070] Example 3

[0071] The second embodiment is repeated, except that the device further comprises a second-layer platform 102, a third-layer platform 103, and a fourth-layer platform 104 arranged in order from top to bottom. The second-layer platform 102 is located below the first-layer platform 101. The head frame 3 and the debris screen 10 are arranged on the second-layer platform 102. The tensioning weight guide rod 1306 of the tensioning device 13 is arranged on the third-layer platform 103. The tail frame 4 is arranged on the fourth-layer platform 104.

[0072] Example 4

[0073] Example 3 is repeated, except that a first connecting ladder 1401 is provided between the first-floor platform 101 and the second-floor platform 102, a second connecting ladder 1402 is provided between the second-floor platform 102 and the third-floor platform 103, and a third connecting ladder 1403 is provided between the third-floor platform 103 and the fourth-floor platform 104.

[0074] Example 5

[0075] Example 4 is repeated, except that the length of the first connecting ladder 1401 is smaller than the length of the second connecting ladder 1402 , and the length of the second connecting ladder 1402 is smaller than the length of the third connecting ladder 1403 .

[0076] Example 6

[0077] Example 5 is repeated, except that the debris screen 10 is tilted. A mobile debris box 15 is provided at the lower end of the debris screen 10. The screened material outlet of the debris screen 10 is connected to the feed port of the mobile debris box 15. A head hopper 16 is provided at the higher end of the debris screen 10. The discharge end of the conveyor belt 9 is connected to the feed port of the debris screen 10 through the head hopper 16.

[0078] Example 7

[0079] Example 6 is repeated, except that a debris screen retaining plate 1001 is further provided on the top of the debris screen 10 .

[0080] Example 8

[0081] The embodiment 7 is repeated, except that the screen undersize outlet of the debris screen 10 is further connected with a material discharge chute 17. The material discharge chute 17 extends into the feed inlet of the silo 11.

[0082] Example 9

[0083] The embodiment 8 is repeated, except that a debris screen short support leg 1002 and a debris screen high support leg 1003 are respectively provided at the two ends below the debris screen 10. The debris screen high support leg 1003 is a telescopic structure.

[0084] Example 10

[0085] Example 9 was repeated except that the debris screen 10 had an inclination angle of 12°.

[0086] Embodiment 11

[0087] Example 10 was repeated, except that the inclination angle of the inclined platform 2 was 26°.

[0088] Example 12

[0089] Repeat Example 11, except that along the direction from the first-layer platform 101 to the inclined platform 2, the head frame 3 includes a head frame front leg 301, a head frame middle leg 302, and a head frame rear leg 303 which are arranged vertically on the second-layer platform 102 in sequence. A head frame lower crossbeam 304 is connected to the lower part between the head frame front leg 301, the head frame middle leg 302, and the head frame rear leg 303. A head frame upper crossbeam 305 is connected to the upper part between the head frame middle leg 302 and the head frame rear leg 303. A feed roller support beam 306 is connected to the upper part between the head frame front leg 301 and the head frame middle leg 302. A feed roller support seat 601 is provided at the connection between the feed roller support beam 306 and the head frame front leg 301. The feed roller 6 is arranged on the feed roller support seat 601. A drive roller support seat 701 is provided at the lower part of the head frame middle leg 302 near the head frame lower crossbeam 304. The driving roller 7 is arranged on a driving roller supporting seat 701 .

[0090] Embodiment 13

[0091] Repeat Example 12, except that the device further includes a first head surface increasing wheel 18 and a second head surface increasing wheel 19. A first head surface increasing wheel support seat 1801 is provided at the upper part of the head frame middle support leg 302 near the feed roller support beam 306. The first head surface increasing wheel 18 is arranged on the first head surface increasing wheel support seat 1801. A second head surface increasing wheel support seat 1901 is provided at the upper part of the head frame rear support leg 303 near the head frame upper crossbeam 305. The second head surface increasing wheel 19 is arranged on the second head surface increasing wheel support seat 1901.

[0092] Embodiment 14

[0093] The embodiment 13 is repeated, except that the device further comprises a tail surface increasing wheel 20 arranged on the tail frame 4. The conveyor belt 9 sequentially passes through the feeding roller 6, the first head surface increasing wheel 18, the driving roller 7, the second head surface increasing wheel 19, the tensioning first redirecting roller 1301, the tensioning roller 1304, the tensioning second redirecting roller 1302, the tail surface increasing wheel 20, and the tail roller 8 to form a closed loop.

[0094] Embodiment 15

[0095] Repeat Example 14, except that the feed roller support beam 306 is set at a lower height than the head frame upper cross beam 305. The first head surface increasing wheel support seat 1801 is set at a lower height than the second head surface increasing wheel support seat 1901.

[0096] Example 16

[0097] Example 15 is repeated, except that a gate valve 21 is provided at the bottom of the silo 11.

[0098] Embodiment 17

[0099] Example 16 is repeated, except that the distance between the gate valve 21 and the four-layer platform 104 is greater than 2 m.

[0100] Embodiment 18

[0101] Example 17 is repeated, except that the intermediate support frame 5 includes a straight section and a curved section. The straight section is located above the first-layer platform 101 and the inclined platform 2, respectively, and the curved section is located above the connection position between the first-layer platform 101 and the inclined platform 2. A waist drum-shaped support wheel 501 is also provided on the intermediate support frame 5 of the curved section.

[0102] Embodiment 19

[0103] Example 18 is repeated, except that a plurality of intermediate support frame legs 502 are spaced apart between the intermediate support frame 5 and the first platform 101 and between the intermediate support frame 5 and the inclined platform 2 .

Claims

1. A pellet iron concentrate silo with screening transport device, characterized in that: The device comprises a layer platform (101), an inclined platform (2), a head frame (3), a tail frame (4), an intermediate support frame (5), a feeding roller (6), a driving roller (7), a tail roller (8), a conveyor belt (9), a debris screen (10), a silo (11), and an iron remover (12); wherein the layer platform (101) is arranged horizontally, and the inclined platform (2) is arranged obliquely; one end of the layer platform (101) is connected to the higher end of the inclined platform (2); the side of the other end of the layer platform (101) is provided with a head frame (3); the lower end of the inclined platform (2) is provided with a tail frame (4); an intermediate support frame (5) is provided between the head frame (3) and the tail frame (4) and located above the layer platform (101) and the inclined platform (2). A support frame (5); a feed roller (6) and a drive roller (7) are provided on the head frame (3); a tail roller (8) is provided on the tail frame (4); a conveyor belt (9) passes around the feed roller (6), the drive roller (7) and the tail roller (8) in sequence, and then returns to the feed roller (6) along the intermediate support frame (5) to form a closed loop; a debris screen (10) is provided on the side of the head frame (3); a feed port of the debris screen (10) is connected to a discharge end of the conveyor belt (9); a silo (11) is provided below the debris screen (10); an outlet for screened material of the debris screen (10) is connected to the feed port of the silo (11); an iron remover (12) is provided on the conveyor belt (9), and the iron remover (12) is located above a first platform (101).

2. The transport device according to claim 1, characterized in that: The device also includes a tensioning device (13); the tensioning device (13) includes a tensioning first redirecting roller (1301), a tensioning second redirecting roller (1302), a tensioning base (1303), a tensioning roller (1304), a tensioning weight (1305), and a tensioning weight guide rod (1306); wherein the tensioning base (1303) is arranged on a first platform (101); the tensioning first redirecting roller (1301) and the tensioning second redirecting roller (1302) are respectively arranged at two ends of the tensioning base (1303); the tensioning roller (1304) is arranged below the first platform (101) and is located at the tensioning first redirecting roller (1301). between the redirecting roller (1301) and the tensioning second redirecting roller (1302); the conveyor belt (9) sequentially passes around the feeding roller (6), the driving roller (7), the tensioning first redirecting roller (1301), the tensioning roller (1304), the tensioning second redirecting roller (1302), and the tail roller (8) to form a closed loop; the tensioning weight (1305) is arranged below the tensioning roller (1304); the tensioning weight guide rod (1306) is vertically arranged, the upper end of the tensioning weight guide rod (1306) is connected to the tensioning roller (1304), and the lower part of the tensioning weight guide rod (1306) is slidably connected to the tensioning weight (1305).

3. The transport device according to claim 2, characterized in that: The device also includes a second-layer platform (102), a third-layer platform (103), and a fourth-layer platform (104) which are arranged in sequence from top to bottom; wherein the second-layer platform (102) is located below the first-layer platform (101); the head frame (3) and the debris screen (10) are arranged on the second-layer platform (102); the tensioning weight guide rod (1306) of the tensioning device (13) is arranged on the third-layer platform (103); and the tail frame (4) is arranged on the fourth-layer platform (104).

4. The transport device according to claim 3, characterized in that: A first connecting ladder (1401) is provided between the first-layer platform (101) and the second-layer platform (102); a second connecting ladder (1402) is provided between the second-layer platform (102) and the third-layer platform (103); and a third connecting ladder (1403) is provided between the third-layer platform (103) and the fourth-layer platform (104).

5. The transport device according to claim 4, characterized in that: The length of the first connecting ladder (1401) is shorter than the length of the second connecting ladder (1402), and the length of the second connecting ladder (1402) is shorter than the length of the third connecting ladder (1403).

6. The transport device according to any one of claims 1 to 5, characterized in that: The debris screen (10) is arranged obliquely; a mobile debris box (15) is provided at the lower end of the debris screen (10); an outlet for screened material of the debris screen (10) is connected to a feed port of the mobile debris box (15); a head funnel (16) is provided at the higher end of the debris screen (10); and a discharge end of the conveyor belt (9) is connected to the feed port of the debris screen (10) via the head funnel (16).

7. The transport device according to claim 6, characterized in that: A debris screen material blocking plate (1001) is also provided on the top of the debris screen (10).

8. The transport device according to claim 6, characterized in that: The screened material outlet of the debris screen (10) is also connected to a material discharge chute (17); the material discharge chute (17) extends into the feed inlet of the silo (11).

9. The transport device according to claim 6, characterized in that: The debris screen (10) has two lower ends provided with a debris screen short support leg (1002) and a debris screen high support leg (1003) respectively; wherein the debris screen high support leg (1003) is a telescopic structure.

10. The transport device according to claim 6, characterized in that: The debris screen (10) has an inclination angle of 10 to 15°; and / or The inclination angle of the inclined platform (2) is 5 to 30 degrees.

11. The transport device according to any one of claims 3 to 5, characterized in that: Along the direction from the first-layer platform (101) to the inclined platform (2), the head frame (3) comprises a head frame front leg (301), a head frame middle leg (302), and a head frame rear leg (303) which are arranged vertically in sequence on the second-layer platform (102); a head frame lower crossbeam (304) is connected to the lower part between the head frame front leg (301), the head frame middle leg (302), and the head frame rear leg (303); and a head frame upper crossbeam (305) is connected to the upper part between the head frame middle leg (302) and the head frame rear leg (303). A feeding roller support beam (306) is connected to the upper part between the front leg (301) of the head frame and the middle leg (302) of the head frame; a feeding roller support seat (601) is provided at the connection between the feeding roller support beam (306) and the front leg (301) of the head frame; a feeding roller (6) is arranged on the feeding roller support seat (601); a driving roller support seat (701) is provided at the lower part of the middle leg (302) of the head frame near the lower cross beam (304) of the head frame; and a driving roller (7) is arranged on the driving roller support seat (701).

12. The transport device according to claim 11, characterized in that: The device also comprises a first head surface increasing wheel (18) and a second head surface increasing wheel (19); a first head surface increasing wheel support seat (1801) is provided on the upper part of the head frame middle support leg (302) near the feeding roller support beam (306); the first head surface increasing wheel (18) is arranged on the first head surface increasing wheel support seat (1801); a second head surface increasing wheel support seat (1901) is provided on the upper part of the head frame rear support leg (303) near the head frame upper cross beam (305); the second head surface increasing wheel (19) is arranged on the second head surface increasing wheel support seat (1901).

13. The transport device according to claim 12, characterized in that: The device also includes a tail surface increasing wheel (20) arranged on the tail frame (4); the conveyor belt (9) sequentially passes around the feeding roller (6), the first head surface increasing wheel (18), the driving roller (7), the second head surface increasing wheel (19), the tensioning first redirecting roller (1301), the tensioning roller (1304), the tensioning second redirecting roller (1302), the tail surface increasing wheel (20), and the tail roller (8) to form a closed loop.

14. The transport device according to claim 12, characterized in that: The setting height of the feeding roller support beam (306) is lower than the upper cross beam (305) of the head frame; the setting height of the first head surface increasing wheel support seat (1801) is lower than the second head surface increasing wheel support seat (1901).

15. The transport device according to any one of claims 3-5, 12-14, characterized in that: A gate valve (21) is provided at the bottom of the silo (11).

16. The transport device according to claim 11, characterized in that: A gate valve (21) is provided at the bottom of the silo (11).

17. The transport device according to claim 15, characterized in that: The distance between the gate valve (21) and the four-layer platform (104) is greater than 2 m.

18. The transport device according to claim 16, characterized in that: The distance between the gate valve (21) and the four-layer platform (104) is greater than 2 m.

19. The transport device according to any one of claims 1-5, 7-10, 12-14, 16-18, characterized in that: The intermediate support frame (5) comprises a straight section and a curved section; wherein the straight section is respectively located above the first-layer platform (101) and the inclined platform (2), and the curved section is located above the connection position between the first-layer platform (101) and the inclined platform (2).

20. The transport device according to claim 19, characterized in that: A waist drum-shaped supporting wheel (501) is also provided on the middle supporting frame (5) of the curved section.

21. The transport device according to claim 19, characterized in that: A plurality of intermediate support frame legs (502) are respectively arranged at intervals between the intermediate support frame (5) and a layer of the platform (101), and between the intermediate support frame (5) and the inclined platform (2).

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