Coarse sand screening device for production of granulated blast-furnace slag powder

Abstract

The utility model relates to the technical field of slag powder production, and discloses a coarse sand screening device for granulated blast furnace slag powder production, which comprises a base, an obliquely arranged screening shell is arranged above the base, a grading screening net is fixedly arranged in the screening shell, and a first collecting hopper and a second collecting hopper are fixedly arranged at the bottom of the screening shell. Discharging hoppers are fixedly arranged at the bottom of the first collecting hopper and the bottom of the second collecting hopper correspondingly, the first collecting hopper and the second collecting hopper are elastically and movably connected with the base, vibration motors are fixedly arranged on the side wall of the first collecting hopper and the side wall of the second collecting hopper correspondingly, and a feeding pipe is fixedly arranged on one side of the top of the screening shell. A slag discharging pipe is fixedly arranged on one side of the bottom of the screening shell, and a switch valve is arranged on the pipe wall of the slag discharging pipe. A closed screening structure is adopted, the phenomenon that dust is exposed and pollutes the environment is avoided, the safety of people is guaranteed, meanwhile, the grading screening efficiency is high, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slag powder production, in particular to a coarse sand screening device for producing granulated blast furnace slag powder. Background Art

[0002] Slag powder is produced by naturally cooling high-temperature slag into hard dry slag, then crushing the high-temperature liquid slag with water quenching, turning it into loose water slag and further breaking it up. The high-temperature slag is produced using sandy gravel such as river sand as the raw material. Because the gravel in its natural state contains more impurities, it needs to be screened before feeding.

[0003] For example, the patent announcement number CN217314347U discloses a continuous coarse sand screening device for the production of granulated blast furnace slag powder, including a No. 1 rotary screen, a No. 2 rotary screen coaxially installed at the rear end of the No. 1 rotary screen, and a driving motor arranged at the rear side of the No. 2 rotary screen, a fine-grained screen is installed on the outer side of the No. 1 rotary screen, a coarse-grained screen is installed on the outer side of the No. 2 rotary screen, a transmission shaft is movably connected to the front end of the driving motor, the transmission shaft is arranged on the inner sides of the No. 1 rotary screen and the No. 2 rotary screen, a baffle is fixedly installed on the outer side of the transmission shaft, the baffle is arranged on the inner side of the front end of the No. 2 rotary screen, and a sealing plate is installed on the top end of the transmission shaft, and the sealing plate is arranged on the inner side of the front end of the No. 1 rotary screen.

[0004] The coarse sand screening device proposed in the above scheme is open, and since the granulated blast furnace slag powder will generate dust during the screening process, the dust will float in the air to cause pollution, thereby endangering people's health. Therefore, a coarse sand screening device for granulated blast furnace slag powder production is proposed. Utility Model Content

[0005] The utility model aims to solve the problems raised in the background technology and proposes a coarse sand screening device for producing granulated blast furnace slag powder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coarse sand screening device for producing granulated blast furnace slag powder comprises a base, a screening shell arranged obliquely is provided above the base, a grading screening net is fixedly provided inside the screening shell, a first collecting hopper and a second collecting hopper are fixedly provided at the bottom of the screening shell, a discharge hopper is fixedly provided at the bottom of the first collecting hopper and the bottom of the second collecting hopper, the first collecting hopper and the second collecting hopper are elastically movably connected to the base, a vibration motor is fixedly provided on the side wall of the first collecting hopper and the side wall of the second collecting hopper, a feed pipe is fixedly provided on the top side of the screening shell, a slag discharge pipe is fixedly provided on the bottom side of the screening shell, and a switch valve is provided on the pipe wall of the slag discharge pipe.

[0008] Preferably, support blocks are fixedly provided on the side walls of the first collecting hopper and the side walls of the second collecting hopper, support seats are fixedly provided on both sides of the top of the base, sliding rods are fixedly provided on the bottoms of the two support blocks, and the sliding rods are vertically slidably arranged on the tops of the support seats, a spring is provided on the rod wall sleeve of the sliding rod, and the two ends of the spring are fixedly connected to the support block and the support seat respectively.

[0009] Preferably, the interior of the support seat adopts a hollow structure, and the lower end of the sliding rod extends to the interior of the support seat.

[0010] Preferably, the mesh diameters on both sides of the grading screening net are set to be different.

[0011] Preferably, a closed area is provided in the middle of the grading screening net.

[0012] Preferably, cleaning ports are provided on the side walls of the screening shell and at positions corresponding to the two sides of the grading screening net, and cleaning covers are provided inside the cleaning ports.

[0013] Compared with the prior art, the utility model provides a coarse sand screening device for producing granulated blast furnace slag powder, which has the following beneficial effects:

[0014] 1. The coarse sand screening device for producing granulated blast furnace slag powder is provided with a grading screening net, a first collecting hopper, a second collecting hopper and a vibration motor. The vibration motor can make the first collecting hopper and the second collecting hopper vibrate, and the first collecting hopper and the second collecting hopper can make the screening shell vibrate together, so that the internal grading screening net vibrates. After the granulated blast furnace slag powder is poured into the interior of the screening shell, it slides down along the inclined surface of the grading screening net and vibrates and screens, thereby realizing the function of grading screening. The screened materials are discharged through the first collecting hopper and the second collecting hopper. Since the whole process is carried out inside the closed screening shell, the phenomenon of powder screening floating and polluting the environment can be avoided.

[0015] 2. The coarse sand screening device for producing granulated blast furnace slag powder is equipped with a support block, a support seat, a sliding rod and a spring. When the screening shell vibrates, the sliding rod on the support block slides on the support seat and squeezes the spring. Conversely, the spring can apply elastic force to the support block, thereby increasing the vibration effect of the screening shell and improving the screening efficiency.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model adopts a closed screening structure to avoid the phenomenon of dust exposure and pollution of the environment, thereby ensuring people's safety. At the same time, the grading screening efficiency is high, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic structural diagram of a coarse sand screening device for producing granulated blast furnace slag powder proposed by the utility model;

[0018] Figure 2 This is a cross-sectional view of a coarse sand screening device for producing granulated blast furnace slag powder proposed by the utility model;

[0019] Figure 3 for Figure 2 Top view of the medium grading screen.

[0020] In the figure: 1. base; 2. screening shell; 3. grading screening net; 4. first collecting hopper; 5. second collecting hopper; 6. discharge hopper; 7. vibration motor; 8. feed pipe; 9. slag discharge pipe; 10. support block; 11. support seat; 12. slide rod; 13. spring; 14. closed area; 15. cleaning cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Example 1

[0024] Reference Figure 1-3A coarse sand screening device for producing granulated blast furnace slag powder comprises a base 1, a screening shell 2 arranged obliquely is arranged above the base 1, a grading screening net 3 is fixedly arranged inside the screening shell 2, mesh holes on both sides of the grading screening net 3 are arranged with different diameters, a closed area 14 is arranged in the middle of the grading screening net 3, materials can be graded and screened, the closed area 14 prevents the middle of the grading screening net 3 from being screened, a first collecting hopper 4 and a second collecting hopper 5 are fixedly arranged at the bottom of the screening shell 2, a discharge hopper 6 is fixedly arranged at the bottom of the first collecting hopper 4 and the bottom of the second collecting hopper 5, the first collecting hopper 4 and the second collecting hopper 5 are elastically movably connected to the base 1, a vibration motor 7 is fixedly arranged on the side wall of the first collecting hopper 4 and the side wall of the second collecting hopper 5, a feeding pipe 8 is fixedly arranged on one side of the top of the screening shell 2, and the screening A slag discharge pipe 9 is fixedly provided on one side of the bottom of the shell 2, and a switch valve is provided on the wall of the slag discharge pipe 9. The material is first added into the interior of the screening shell 2 through the feed pipe 8, and then the first collecting hopper 4 and the second collecting hopper 5 are vibrated by the operation of the vibration motor 7. The first collecting hopper 4 and the second collecting hopper 5 can make the screening shell 2 vibrate together, thereby vibrating the internal grading screening net 3. After the granulated blast furnace slag powder is poured into the interior of the screening shell 2, it slides down along the inclined surface of the grading screening net 3 and vibrates and screens, thereby realizing the function of grading screening. The screened material is discharged through the first collecting hopper 4 and the second collecting hopper 5. Since the whole process is carried out inside the closed screening shell 2, the phenomenon of powder screening floating and polluting the environment can be avoided. After screening, impurities will be concentrated at the bottom of the screening shell 2, and the switch valve is opened to discharge them through the slag discharge pipe 9.

[0025] Example 2

[0026] Reference Figure 1-2 The side walls of the first collecting hopper 4 and the side walls of the second collecting hopper 5 are fixed with support blocks 10, and support seats 11 are fixed on both sides of the top of the base 1. Slide rods 12 are fixed at the bottom of the two support blocks 10, and the slide rods 12 are vertically slidably arranged on the top of the support seats 11. The rod wall of the slide rod 12 is sleeved with a spring 13, and the two ends of the spring 13 are respectively fixedly connected to the support block 10 and the support seat 11. The interior of the support seat 11 adopts a hollow structure, and the lower end of the slide rod 12 extends to the interior of the support seat 11. When the screening shell 2 vibrates, the slide rod 12 on the support block 10 slides on the support seat 11 and squeezes the spring 13. On the contrary, the spring 13 can apply elastic force to the support block 10, thereby increasing the vibration effect of the screening shell 2 and improving the screening efficiency.

[0027] Example 3

[0028] Reference Figure 1-2The side walls of the screening shell 2 and the positions on both sides of the grading screening net 3 are provided with cleaning ports, and a cleaning cover 15 is provided inside the cleaning port. When the mesh of the grading screening net 3 is clogged, the cleaning cover 15 can be opened to clean the grading screening net 3.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coarse sand screening device for producing granulated blast furnace slag powder, comprising a base (1), characterized in that: A tilted screening shell (2) is provided above the base (1), a grading screening net (3) is fixedly provided inside the screening shell (2), a first collecting hopper (4) and a second collecting hopper (5) are fixedly provided at the bottom of the screening shell (2), a discharge hopper (6) is fixedly provided at the bottom of the first collecting hopper (4) and the bottom of the second collecting hopper (5), the first collecting hopper (4) and the second collecting hopper (5) are elastically movably connected to the base (1), a vibration motor (7) is fixedly provided on the side wall of the first collecting hopper (4) and the side wall of the second collecting hopper (5), a feed pipe (8) is fixedly provided on one side of the top of the screening shell (2), a slag discharge pipe (9) is fixedly provided on one side of the bottom of the screening shell (2), and a switch valve is provided on the pipe wall of the slag discharge pipe (9).

2. A coarse sand screening device for producing granulated blast furnace slag powder according to claim 1, characterized in that: The side walls of the first collecting hopper (4) and the side walls of the second collecting hopper (5) are both fixedly provided with support blocks (10), and support seats (11) are both fixedly provided on both sides of the top of the base (1). The bottoms of the two support blocks (10) are both fixedly provided with sliding rods (12), and the sliding rods (12) are vertically slidably arranged on the tops of the support seats (11). The rod wall of the sliding rod (12) is provided with a spring (13), and the two ends of the spring (13) are respectively fixedly connected to the support block (10) and the support seat (11).

3. A coarse sand screening device for producing granulated blast furnace slag powder according to claim 2, characterized in that: The interior of the support seat (11) adopts a hollow structure, and the lower end of the sliding rod (12) extends to the interior of the support seat (11).

4. The coarse sand screening device for producing granulated blast furnace slag powder according to claim 1, characterized in that: The mesh diameters on both sides of the grading screening net (3) are set to be different.

5. The coarse sand screening device for producing granulated blast furnace slag powder according to claim 1, characterized in that: A closed area (14) is provided in the middle of the grading screening net (3).

6. The coarse sand screening device for producing granulated blast furnace slag powder according to claim 1, characterized in that: Cleaning ports are provided on the side walls of the screening shell (2) and at positions corresponding to the two sides of the grading screening net (3), and a cleaning cover plate (15) is provided inside the cleaning port.

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