CN205851324U - The online broken crushing system of steel slag rotary drum screening bypass - Google Patents

Abstract

The utility model discloses an on-line crushing and crushing system for steel slag drum screening bypass. Steel slag enters a feeding pipe through a metering device and a feeding belt conveyor, and then enters a drum screening machine. The steel slag separates qualified materials, bulk materials and sundries. , the qualified material enters the qualified material belt conveyor through the qualified material chute, the bulk material and sundries are discharged into the bypass coarse material pipe through the sundries discharge pipe, and then the bypass is crushed online, and the crushed qualified material The qualified material is transported to the grinding belt conveyor through the belt conveyor. The utility model makes reasonable use of space and technology, so that the routine process of bypassing and emptying unqualified materials is changed into an internal circulation process, and the space occupied by coarse materials and secondary transportation are canceled, which not only saves energy and expenses, It also reduces environmental pollution and energy waste, relying on the rotation of the drum to sieve materials, and at the same time avoiding blockage of large materials and sundries on the screen.

Description

Steel slag drum screening bypass online crushing system

Technical field:

The utility model relates to a screening device in the grinding technology, in particular to a steel slag drum screening bypass on-line crushing system.

Background technique:

Steel slag is the waste slag discharged from steel mills during steelmaking. After the steel slag leaves the steel plant, it is usually transported by automobile, ship, train, or multimodal transport to the steel slag powder production enterprise through repeated transportation. During this process, the steel slag will inevitably be mixed with a certain amount of stones, bricks, Woven bags, ropes and other sundries, the stable operation of the vertical mill requires that the steel slag entering the grinding mill has no large materials and sundries, so the steel slag needs to go through the screening process to remove the bulky materials and sundries in the steel slag before entering the vertical mill .

At present, the common practice in the market is: the steel slag is transported by the belt conveyor to the vibrating screen whose screen surface is a grid mesh screen surface, the vibrating screen screens out the sundries of bulk materials, and the steel slag that meets the particle requirements is passed through the screen surface. As the name suggests, when the vibrating screen is working, the vibrating motor or eccentric motor generates an exciting force, forcing the screen body to drive the screen to move longitudinally, so that the materials on the surface are excited and vibrated. Forced and periodically thrown forward.

But the disadvantage of this method is that it relies on the impact force of the material and the screen surface for screening. In order to ensure the screening effect, the vibrating screen must ensure a certain amplitude, and some particles using the mesh screen surface will be stuck in the grid opening to block the screen. surface, and a part of the bulk material will enter the vertical mill through the screen from its smallest size due to multiple tumbling.

However, for the screened materials, the fine materials are qualified materials, but the coarse materials with larger particle sizes are often troublesome to deal with. The traditional production line passes through screening and the "qualified" particle size materials enter the next process. Unqualified materials are often discharged out of the frame through the bypass. After stacking to a certain material layer, it will be transported away by loader and dump truck for recycling and crushing again.

It is obvious that the traditional process is still blank for on-line bypass crushing, because screening and crushing are often treated as separate parts in traditional process design, and are not considered as a whole. As a result, the screening unit completes the screening function, and the coarse material after screening often does not have a suitable treatment process.

The coarse material released through the bypass cannot be rationally utilized, which instead causes the process line to be extended. In addition, the stockpiled coarse materials virtually reduce the utilization rate of the limited area of plant land. If the investment is too small, it is necessary to increase the number of mechanical manpower cycles, and if the site is large, a larger yard is required. Additional machinery (loaders, trucks) and manpower need to be invested, which increases additional costs and the on-site operating environment is harsh.

Utility model content:

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a steel slag drum screening bypass on-line crushing and crushing system with reasonable design, shortened process flow, reduced site occupation, good screening effect and improved work efficiency .

The technical scheme of the utility model is:

A steel slag drum screening bypass online crushing system, comprising a feeding belt conveyor and a crusher, the outlet of the feeding belt conveyor is connected to a drum screening machine through a feeding pipe, and steel slag is separated by the drum screening machine Qualified materials and bulk materials and sundries are discharged. The qualified materials enter the qualified material belt conveyor through the qualified material chute, and the bulk materials and sundries are discharged through the sundries discharge pipe. The drum screening machine includes a support frame, The support frame is provided with a motor and a drum, both of which are connected by a transmission mechanism, a screen is provided on the drum, steel slag enters from one end of the drum through the feeding pipe, and the other end of the drum is connected to the drum. The debris discharge pipe is connected; the crusher and the crushing motor are fixed on the support frame, the feed port of the crusher is connected with the lower end of the bypass coarse material pipe, and the upper end of the bypass coarse material pipe is connected with the The debris discharge pipe of the drum screening machine is connected, the discharge port of the crusher is connected to the upper end of the coarse material chute, and the lower end of the coarse material chute corresponds to the qualified material belt conveyor.

The lower end of the bypass coarse material pipe is connected to the upper end of the tapered transition pipe section, the lower end of the tapered transition pipe section communicates with the feed inlet of the crusher, the coarse material chute is conical, and its upper end diameter is greater than the lower diameter.

The crusher and the crushing motor are connected through a transmission mechanism. The rotating shaft of the crusher is provided with breaking hammers at intervals. The shell is provided with the inlet and outlet.

The breaking hammer adopts the structure of a hammer head and a hammer shaft, and the hammer shaft is fixed on the rotating shaft, and the lengths of the hammer shafts are different.

The drum is inclined, the front end is higher than the rear end, the aperture of the screen is 8mmX8mm, the inclination angle of the drum is 5-8°, and the surface speed of the drum is 55-65m/min; A lifting plate and a breaking hammer are arranged in the drum, the lifting plate adopts a spiral design and is fixed on the inner wall of the drum, the breaking hammer adopts the structure of a hammer head and a hammer rod, and the hammer rod is fixed on the drum On the central rotating shaft, the lengths of the hammer rods are not the same.

The beneficial effects of the utility model are:

1. On the basis of the effective use of the original equipment (feeding belt, supply frame and other equipment) and the site, the utility model reduces the investment in equipment and the number of equipment, improves the process efficiency, and shortens the supply route of materials. The crushing process has obvious economic effects and broad prospects.

2. The utility model realizes on-line crushing on the bypass, which changes the situation that after the separation of traditional bulk materials, it is difficult to cooperate with the production line for coarse materials that do not meet the requirements of the screening, and the circulation is more complicated. Through the rational use of the bypass, the Coarse material is directly crushed into a process modification that meets the particle size requirements.

3. The utility model makes reasonable use of space and technology, so that the routine process of bypassing and emptying unqualified materials is changed to an internal circulation process. The site occupied by coarse materials and secondary handling are canceled, making the process arrangement more compact and reasonable, saving energy and expenses. The screening and crushing processes are closely combined to meet the particle size requirements of the process and reduce environmental pollution and energy waste.

4. The crushed qualified materials of the utility model enter the vertical mill through the conveying belt conveyor, and are further pulverized to form a continuous process, which has high efficiency, saves labor and time.

5. The utility model adopts the process device of belt conveyor + drum screening machine + belt conveyor, which not only improves the screening effect, but also improves the system operation rate and reduces maintenance costs.

6. The utility model relies on the rotation of the drum to sieve materials. As long as the inclination angle and rotation speed of the drum are controlled within a suitable range, a good screening effect can be obtained, and at the same time, it can also avoid blockage of the screen by large materials and sundries. .

7. The drum of the utility model is equipped with a lifting plate and a breaking hammer. The lifting plate can turn and raise the material to improve the screening effect. The separated qualified materials enter the vertical mill through the belt conveyor for further grinding, forming a continuous process with high efficiency, labor-saving and time-saving.

8. The utility model has the advantages of reasonable design, good screening effect, shortened technological process, reduced site occupation and improved work efficiency. It has a wide range of applications, is easy to popularize and implement, and has obvious economic benefits.

Description of drawings:

Figure 1 is a diagram of the usage state of the steel slag drum screening bypass online crushing and crushing system;

Fig. 2 is a right view of the steel slag drum screening bypass on-line crushing system shown in Fig. 1 .

detailed description:

Embodiment: See Figure 1 and Figure 2, in the figure, 1-supporting frame, 2-feeding belt conveyor, 3-feeding pipe, 4-drum screening machine, 5-debris discharge pipe, 6-bypass coarse material Pipe, 7-crushing motor, 8-crusher, 9-coarse material chute, 10-qualified material belt conveyor, 11-qualified material chute.

Steel slag drum screening bypass online crushing and crushing system, including feeding belt conveyor 2 and crusher 8, wherein: the outlet of feeding belt conveyor 2 is connected to drum screening machine 4 through feeding pipe 3, and steel slag passes through drum screening machine 4 Separation of qualified materials and bulk materials and sundries, qualified materials enter qualified material belt conveyor 10 through qualified material chute 11, bulk materials and sundries are discharged through sundries discharge pipe 5, drum screening machine 4 includes support frame 1 , the support frame 1 is provided with a motor and a drum, the two are connected by a transmission mechanism, a screen is provided on the drum, steel slag enters from one end of the drum through a feeding pipe 3, and the other end of the drum communicates with a sundry discharge pipe 5; the support frame 1 is fixed with a crusher 8 and a crushing motor 7, the feed port of the crusher 8 communicates with the lower end of the bypass coarse material pipe 6, and the upper end of the bypass coarse material pipe 6 communicates with the debris discharge pipe 5 of the drum screening machine 4 , the discharge port of the crusher 8 is connected to the upper end of the coarse material chute 9, and the lower end of the coarse material chute 9 corresponds to the qualified material belt conveyor 10, and the bulk materials and sundries are crushed by the crusher 8, and all Qualified materials are transported to the next process through the qualified material belt conveyor 10. By adjusting the parameters of the crusher 8, the particle size of the crushed material can be controlled.

Preferred technical solution: the lower end of the bypass coarse material pipe 6 is connected to the upper end of the tapered transition pipe section, the lower end of the tapered transition pipe section is connected to the feed inlet of the crusher 8, the coarse material chute 9 is conical, and its upper end diameter is greater than the lower diameter.

Crusher 8 and crushing motor 7 are connected through a transmission mechanism. Breaking hammers are arranged at intervals on the rotating shaft of the crusher 8. The rotating shaft and the crushing hammer are set in the casing, and the casing is fixed on the support frame 1. The casing is provided with a feeding port. and outlet. The breaking hammer adopts the structure of the hammer head and the hammer shaft. The hammer shaft is fixed on the rotating shaft, and the length of the hammer shaft is different.

The drum is inclined, the front end is higher than the rear end, the aperture of the screen is 8mmX8mm, the inclination angle of the drum is 5-8°, the surface speed of the drum is 55-65m/min; the lifting plate and the breaking hammer are installed in the drum , the lifting plate adopts a spiral design and is fixed on the inner wall of the drum. The breaking hammer adopts the structure of the hammer head and the hammer rod. The hammer rod is fixed on the central rotating shaft of the drum. Staggered settings.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (6)

1. the online broken crushing system of steel slag rotary drum screening bypass, containing feeding belt conveyer and disintegrating machine, its feature It is: the discharging opening of described feeding belt conveyer connects cylinder round sifter by charge pipe, and slag is through described cylinder round sifter Isolating qualified material and bulk materials and foreign material, it is defeated that described qualified material enters qualified material belt by qualified material chute Sending machine, described bulk materials and foreign material to be discharged by foreign material discharge pipe, described cylinder round sifter includes support frame, described support Being provided with motor and cylinder on framework, the two is connected by drive mechanism, and described cylinder is provided with screen cloth, and slag passes through institute Stating charge pipe to enter from one end of described cylinder, the other end of described cylinder connects with described foreign material discharge pipe；Described carriage Being fixed with described disintegrating machine and broken motor on frame, the charging aperture of described disintegrating machine connects with the lower end of bypass coarse fodder pipe, described The upper end of bypass coarse fodder pipe connects with the foreign material discharge pipe of described cylinder round sifter, the discharging opening of described disintegrating machine and coarse fodder elephant trunk Upper end connect, the lower end of described coarse fodder elephant trunk is corresponding with qualified material belt conveyor.

The online broken crushing system of steel slag rotary drum the most according to claim 1 screening bypass, is characterized in that: described bypass is thick The lower end of material pipe is connected with the upper end of tapering transition pipeline section, the lower end of described tapering transition pipeline section and the charging aperture of described disintegrating machine Connection, described coarse fodder elephant trunk is taper, and its upper end diameter is more than lower end diameter.

The online broken crushing system of steel slag rotary drum the most according to claim 1 screening bypass, is characterized in that: described disintegrating machine Connected by drive mechanism with broken motor, the rotary shaft of described disintegrating machine be arranged at intervals with quartering hammer, described rotary shaft and Quartering hammer be set with in the enclosure, described shell is fixed in described support frame, described shell is provided with described charging aperture and Discharging opening.

The online broken crushing system of steel slag rotary drum the most according to claim 3 screening bypass, is characterized in that: described quartering hammer Using tup and the structure of hammer stem, described hammer stem is fixed in described rotary shaft, and the length of described hammer stem is not quite similar.

The online broken crushing system of steel slag rotary drum the most according to claim 1 screening bypass, is characterized in that: described cylinder inclines Inclined is arranged, and its front end is higher than rear end, and the aperture 8mmX8mm of described screen cloth, the inclination angle of described cylinder is 58 °, described rolling Roll surface speed 55 65m/min of cylinder.

The online broken crushing system of steel slag rotary drum the most according to claim 1 screening bypass, is characterized in that: in described cylinder Arranging lifting blade and quartering hammer, described lifting blade uses spiral design and is fixed on inner wall of rotary drum, and described quartering hammer uses Tup and the structure of hammer stem, described hammer stem is fixed on the central rotating shaft of described cylinder, and the length of described hammer stem is not quite similar.