CN217664460U

CN217664460U - Screening device

Info

Publication number: CN217664460U
Application number: CN202221148528.XU
Authority: CN
Inventors: 赵俊花; 马怀营; 刘磊; 朱旺; 宋福亮; 王春来; 岳宏亮; 辛越; 吴建海; 杨文华; 贾国利
Original assignee: Beijing Shougang Co Ltd
Current assignee: Beijing Shougang Co Ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-10-28
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses a screening device, which belongs to the technical field of sinter particle size classification and comprises a screening body and a screen, wherein the screening body is provided with a screening cavity, a feeding hole and a plurality of discharging holes which are communicated with the cavity wall; the screen cloth corresponds the setting with the discharge opening, and locates pan feeding hole below, and a plurality of screen cloths set up along vertical interval in proper order, and every screen cloth that is in the top is big than the mesh size of the screen cloth that is in the below, and every screen cloth slope sets up, and two adjacent screen cloths have the contained angle, and every screen cloth height one side that is the lowest is close to the discharge opening that corresponds, and every screen cloth height one side that is the lowest is the same with the height of the discharge opening that corresponds. The sintered ore can be classified into different particle sizes at one time only by placing the sintered ore into the feeding port of the screen body, the occupation ratio conditions of the sintered ore with different particle sizes are obtained, the operation is simple and reliable, the data is accurate, the efficiency is high, and the labor intensity is reduced; the zigzag design of the screen saves space and is convenient for popularization and application.

Description

Screening device

Technical Field

The utility model belongs to the technical field of the sinter particle size grading, concretely relates to screening plant.

Background

The sinter is the main raw material for blast furnace ironmaking in China, and accounts for about 70% of the iron charge entering the blast furnace, the total output reaches 8 hundred million tons, the particle size of the sinter has great influence on the operation of the blast furnace, and the undersize particle size of the sinter can influence the air permeability of smelting raw materials of the blast furnace, thereby influencing the reduction reaction in the blast furnace. Therefore, the particle size of the sintered ore must be classified.

After a laboratory is used for a falling test of the sintering ore, the sintering ore is required to be classified in particle size, and the conventional screening of the sintering ore with different particle sizes adopts manual screening, so that the process is relatively complicated.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a screening plant only needs to put the sintering deposit into the pan feeding mouth of sieve components of a whole that can function independently just can once only carry out the particle size classification to the sintering deposit, obtains the proportion condition of different particle size sintering deposits, and easy operation is reliable, and data are accurate, and is efficient, and has reduced intensity of labour.

The technical scheme of the utility model is that:

the utility model provides a screening plant for carry out the particle size classification to the sintering deposit, the device includes:

the screening body is provided with a screening cavity, a feeding hole and a plurality of discharging holes, wherein the feeding hole and the discharging holes are communicated with the wall of the cavity;

the screen cloth, with the discharge opening corresponds the setting, and locates pan feeding hole below, the screen cloth connect in the screen cloth is internal, and is a plurality of the screen cloth sets up along vertical interval in proper order, and is a plurality of the mesh size of screen cloth is different, is in every of top the screen cloth is than being in the below the mesh size of screen cloth is big, every the screen cloth slope sets up, adjacent two screen cloth slope opposite direction, every the screen cloth height one side of minimum is close to corresponding the discharge opening, every the screen cloth height one side of minimum with corresponding the discharge opening height is the same.

Further, each screen mesh forms an angle of 30-50 degrees with the horizontal direction.

Further, in two adjacent screens, the side with the lower screen height above is close to the side with the higher screen height below.

Further, the mesh size of the uppermost screen is 40mm, and the mesh size of the lowermost screen is 5mm.

Further, each of the screens is connected to the screen body by a bolt.

Furthermore, every one side that the screen cloth height is the lowest is connected with receives the material platform, receive the material platform connect in the screening body, every receive the material platform and be close to the correspondence the discharge opening, and every receive the material platform with the correspondence the height of discharge opening is the same.

Further, the screening device also comprises;

receive the workbin, connect in the screening is external, it is equipped with the material receiving hole to receive the workbin, receive workbin detachably connect in the screening is external, so that receive the workbin with arbitrary one the discharge opening intercommunication.

Further, the screening device further comprises:

the lifting doors are connected with the screen separation bodies and are correspondingly arranged with the material receiving boxes, and each lifting door can open or close the corresponding material receiving hole of the material receiving box and the communication channel of the discharge hole of the screen separation bodies.

Further, the screening device further comprises:

the extensible member, with the overhead door corresponds the setting, and both ends connect respectively in the screening is external and the overhead door.

Further, the screening device further comprises:

the drawer is connected to the screen body in a sliding mode in the horizontal direction, is arranged in the screen body or outside the screen body and is located below the screen below the lowest side.

The beneficial effects of the utility model include at least:

the utility model provides a screening plant for carry out the particle size classification to the sintering deposit, the device includes components of a whole that can function independently and screen cloth. The screening body is provided with a screening cavity, a feeding hole and a plurality of discharging holes, wherein the feeding hole and the discharging holes are communicated with the cavity wall; the screen cloth corresponds the setting with the discharge opening, and locate pan feeding hole below, the screen cloth is connected in the screen cloth body, a plurality of screen cloths are along vertical interval setting in proper order, the mesh size of a plurality of screen cloths is different, every screen cloth that is in the top is big than the mesh size of the screen cloth that is in the below, every screen cloth slope sets up, two adjacent screen cloths have the contained angle, every screen cloth height one side that is lowest is close to the discharge opening that corresponds, every screen cloth height one side that is lowest is the same with the height of the discharge opening that corresponds, so that the sintering deposit on the screen cloth discharges from the discharge opening that corresponds. The sintered ore to be screened enters a screening cavity of the screening body from a feeding hole of the screening body and firstly falls onto a first layer of screen with the largest mesh size, and the sintered ore with the pore diameter larger than the size of the first layer of screen is remained on the screen; the sintered ore with the aperture smaller than the size of the first layer screen mesh falls down to the second layer screen mesh. The sintered ore with the pore diameter larger than that of the second layer of screen is left on the second layer of screen, rolls from the side with high height to the side with low height under the action of gravity, and is discharged and collected from the corresponding discharge hole; the sintered ore having a smaller pore size than the second layer screen falls down from the mesh openings onto the third layer screen until the sintered ore is screened by all the screens, so that sintered ore having a different particle size range can be obtained. In the process, the sintered ore can be classified into different particle sizes at one time only by placing the sintered ore into the material inlet of the screen body, the occupation ratio conditions of the sintered ore with different particle sizes are obtained, the operation is simple and reliable, the data is accurate, the efficiency is high, and the labor intensity is reduced; the zigzag design of the screen saves space and is convenient for popularization and application.

Drawings

Fig. 1 is a schematic structural diagram of a screening device according to the present embodiment.

Description of reference numerals: 1-screening body, 11-screening cavity, 12-feeding hole, 2-screen, 3-material receiving platform, 4-material receiving box, 5-lifting door, 6-telescopic piece and 7-drawer.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.

Fig. 1 shows the structure of a screening device, and in combination with fig. 1, the utility model provides a screening device for carry out particle size classification to the sinter, the device includes screen frame 1 and screen cloth 2.

The screening body 1 is provided with a screening cavity 11, a feeding hole 12 penetrating through the cavity wall and a plurality of discharging holes; the screen cloth 2 corresponds the setting with the discharge opening, and locate pan feeding hole 12 below, screen cloth 2 is connected in screen components of a whole that can function independently 1, a plurality of screen cloth 2 set up along vertical interval in proper order, a plurality of screen cloth 2's mesh size is different, every screen cloth 2 that is in the top is bigger than the mesh size of the screen cloth 2 that is in the below, every screen cloth 2 slope sets up, two adjacent screen cloth 2 slope opposite directions, every screen cloth 2 highly the lowest one side is close to the discharge opening that corresponds, every screen cloth 2 highly the lowest one side is the same with the height of the discharge opening that corresponds, so that the sintering ore on the screen cloth 2 is discharged from the discharge opening that corresponds.

The sintered ore to be screened enters a screening cavity 11 of a screening body 1 from a feeding hole 12 of the screening body 1 and firstly falls onto a first layer screen 2 with the largest mesh size, the sintered ore with the pore diameter larger than the size of the first layer screen 2 is left on the screen 2, and the first layer screen 2 is obliquely arranged, so the sintered ore left on the first layer screen 2 can roll from the high side to the low side and is discharged from a corresponding discharging hole for collection; the sintered ore having a pore size smaller than the size of the first screen 2 falls down from the mesh openings onto the second screen 2. The sintered ore with the aperture larger than that of the second layer of screen 2 is left on the second layer of screen 2, rolls from the side with high height to the side with low height under the action of gravity, and is discharged and collected from the corresponding discharge hole; the sintered ore having a smaller pore size than the second layer screen 2 falls down through the mesh openings onto the third layer screen 2 until the sintered ore is sieved by all the screens 2, so that sintered ore having a different particle size range can be obtained. In the process, the sintered ore is only required to be placed into the feeding port of the screen body 1, the particle size classification of the sintered ore can be realized without other operations, and the operation is simple. The screen body 1 may have a semi-closed frame structure of 450mm 800mm 1200mm (length, width, and height). Because the sinter is easy to crush, the vibrating mechanism cannot be adopted to drive the screen to vibrate so as to avoid crushing the sinter.

Further, in the present embodiment, each screen 2 is at an angle of 30-50 ° to the horizontal. The angle of the screen 2 is too small, so that the friction force between the sinter and the screen 2 is difficult to overcome, and the collection of the sinter is difficult to realize; the angle between the screen 2 and the horizontal direction is too large, so that the running speed of the sinter ore is too high, and the sinter ore with the particle size smaller than the mesh size of the screen 2 reaches the side with the lowest height of the screen 2 and is stacked up without leaking.

Further, of the two adjacent screens 2, the lower side of the upper screen 2 is closer to the higher side of the lower screen 2.

Further, in the present embodiment, the mesh size of the uppermost screen 2 is 40mm, and the mesh size of the lowermost screen 2 is 5mm. Of course, the size of the sintered ore may be set to other sizes according to the particle size classification requirement, and is not limited herein.

Specifically, in this embodiment, each screen 2 may be connected to the screen body 1 by a bolt, and may be clamped, so as to be conveniently detached, which is not limited herein.

Further, in this embodiment, with reference to fig. 1, one side of each screen 2 with the lowest height is connected with a material receiving platform 3, the material receiving platform 3 is connected in the screen body 1, the material receiving platform 3 is close to the corresponding discharge hole, and each material receiving platform 3 is the same as the corresponding discharge hole in height. The sinter held back by the screen 2 can move to the receiving platform 3 under the action of gravity and then is discharged through the discharge hole.

Further, in this embodiment, with reference to fig. 1, the screening device further includes a material receiving box 4, the material receiving box 4 is provided with material receiving holes, and the material receiving box is detachably connected to the outside of the screen body 1, so that the material receiving box 4 is connected to any one of the material discharging holes, and the sintered ore intercepted by the screen 2 can be collected into the material receiving box 4. The material receiving box 4 can be clamped outside the screen body 1, so that the material receiving box is convenient to detach, and can also be hung outside the screen body 1 without limitation. A plurality of discharge holes can be arranged, one discharge hole can be arranged, and the discharge holes are large in size and can be used for discharging a plurality of sintering ores together; the screening device can also comprise a material receiving plate, and sinter retained by the screen 2 through the material receiving plate is scraped into a material receiving box 4 from the material receiving platform 3 through the material outlet hole. In order to take the material receiving box 4 conveniently, the screening body 1 can be externally provided with a hook, the material receiving box 4 is provided with a corresponding hanging ring, and the hanging ring of the material receiving box 4 can be hung on the corresponding hook. The material receiving box 4 can be arranged in a structure with an upper opening, the top of the material receiving box 4 is lower than the corresponding material outlet, and the sinter rolls into the material receiving box 4 from the material outlet under the action of gravity or through a material receiving plate. In the screening process, can receive workbin 4 and can collect the sinter that the superiors screen cloth was held back earlier, weigh and fall the sinter that goes to collect the screen cloth interception on other layers again, for a plurality of settings of receiving workbin 4, can save space on the one hand, adapt to the narrow and small characteristics in laboratory space, on the other hand, laboratory staff is few, and single setting of receiving workbin 4 is difficult to carry out the sinter simultaneously to a plurality of screen cloths and collects and match.

Furthermore, in this embodiment, with reference to fig. 1, the screening device may further include a lifting gate 5, the lifting gate 5 is connected to the screening body 1 and is disposed corresponding to the material receiving box 4, and each lifting gate 5 may open or close a communication channel between the material receiving hole of the corresponding material receiving box 4 and the material outlet of the screening body 1. When the screening device does not work, the lifting door 5 can be closed; when the screening device works, a batch of sintered ores can enter the screening body 1 from the feeding hole 12, and after multi-stage screening is finished, the lifting door 5 is opened to enable the sintered ores to enter the corresponding material receiving box 4; if the lifting door 5 is not provided, the sinter with small particle size can directly roll to the material collecting box 4 for collecting the sinter with larger particle size without falling to the screen 2 below because of too fast movement.

In order to realize the opening and closing of the lifting door 5, in this embodiment, with reference to fig. 1, the screening device may further include an expansion piece 6, where the expansion piece 6 is disposed corresponding to the lifting door 5, and two ends of the expansion piece 6 are respectively connected to the outside of the screening body 1 and the lifting door 5. The telescopic piece 6 can adopt an air cylinder, and has quick response and high speed.

Further, in this embodiment, with reference to fig. 1, the screening device may further include a drawer 7 slidably connected to the screen body 1 along the horizontal direction, where the drawer 7 is disposed inside the screen body 1 or outside the screen body 1 and located below the lowermost screen 2. The drawer 7 can collect the sintering ore with the minimum particle size, is convenient to pull and take.

The screening device of the utility model can grade the particle size of the sintering ore at one time to obtain the proportion condition of the sintering ore with different particle sizes, the operation is simple and reliable, the data is accurate, the efficiency is high, and the labor intensity is reduced; the space has been saved in the design of screen cloth 2 "character form, and screen cloth 2 and collection box 4 can be dismantled in a flexible way, are convenient for change.

While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A screening device for classifying the particle size of sinter, the device comprising:

the screening body is provided with a screening cavity and is arranged at a feeding hole and a plurality of discharging holes which are communicated with the cavity wall;

the screen cloth, with the discharge opening corresponds the setting, and locates pan feeding hole below, the screen cloth connect in the screen cloth, it is a plurality of the screen cloth sets up along vertical interval in proper order, and is a plurality of the mesh size of screen cloth is different, is in every of top the screen cloth is than being in the below the mesh size of screen cloth is big, every the screen cloth slope sets up, adjacent two screen cloth slope opposite direction, every the screen cloth height one side of minimum is close to the correspondence the discharge opening, every the screen cloth height one side of minimum with correspond the discharge opening height is the same.

2. A screening device according to claim 1, wherein each said screen is angled from 30 to 50 ° to the horizontal.

3. A screening device according to claim 1, wherein the side of two adjacent screens above which the screen is low is adjacent the side of the screen below which the screen is high.

4. A screening device according to claim 1, wherein the mesh size of the uppermost screen is 40mm and the mesh size of the lowermost screen is 5mm.

5. A screening device according to claim 1, wherein each of the screens is connected to the screen body by bolts.

6. A screening device as claimed in claim 1, wherein a material receiving platform is connected to the side of each screen having the lowest height, the material receiving platforms are connected to the inside of the screening body, each material receiving platform is close to the corresponding discharge hole, and the height of each material receiving platform is the same as that of the corresponding discharge hole.

7. A screening device according to any one of claims 1 to 6, further comprising;

8. A screening device according to claim 7, further comprising:

the lifting doors are connected with the sieve body and correspond to the material receiving boxes, and each lifting door can open or close a corresponding material receiving hole of the material receiving box and a communicating channel of a material outlet of the sieve body.

9. A screening device according to claim 8, further comprising:

10. A screening device according to claim 7, further comprising:

the drawer is connected to the screen body in a sliding mode along the horizontal direction, is arranged in the screen body or outside the screen body and is located at the lowest position below the screen.