CN216323120U - Ball grading type round roller screen - Google Patents
Ball grading type round roller screen Download PDFInfo
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- CN216323120U CN216323120U CN202122472327.7U CN202122472327U CN216323120U CN 216323120 U CN216323120 U CN 216323120U CN 202122472327 U CN202122472327 U CN 202122472327U CN 216323120 U CN216323120 U CN 216323120U
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- sieve
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Abstract
The utility model discloses a ball grading type round roller screen, and relates to the technical field of metallurgical equipment. This ball grading type round roller sieve, which comprises a body, the body is provided with individual layer round roller sieve, wherein individual layer round roller sieve is including setting up in the anterior segment round roller sieve of pelletizer anterior segment and setting up in the back end round roller sieve of pelletizer back end, and the interval between the round roller of anterior segment round roller sieve is less than the interval between the round roller of back end round roller sieve, and anterior segment round roller sieve is located the top of compounding system, and the preceding tip of back end round roller sieve passes through the transportation area with the shaft furnace import and is connected, and the back end of back end round roller sieve is located the top of compounding system. According to the utility model, the single-layer screen surface only needs to be cleaned while the green balls are screened, so that the condition of cleaning the lower-layer screen surface is not influenced, the problem that the sticky material of the roller body of the round roller screen cannot be cleaned is solved, the space between the round roller screens is ensured, and the screening efficiency of the round roller screen is ensured.
Description
Technical Field
The utility model relates to the technical field of metallurgical equipment, in particular to a ball grading type round roller screen.
Background
In the iron and steel industry, pellet production is currently a common technique for iron ore refining. The pelletizing process is an important process of an iron ore pellet production line, and the stability and improvement of the green pellet yield and quality mainly depend on the pelletizing process. The pelletizer mainly comprises a disc pelletizer and a cylinder pelletizer as core equipment in the pelletizing process, the cylinder pelletizer is generally adopted in a large-scale high-yield production line, but the disc pelletizer is more common because the current medium and small-scale pellet production line dominates.
When the pelletizer works, materials move along different tracks in the pelletizer respectively to form green pellets with different diameters, and the green pellets are discharged from the pelletizer after reaching a certain condition and fall into a subsequent green pellet bearing device. The pelletizing granularity of the pelletizer is a key parameter of the pelletizing process, and the higher the yield of green pellets is, the higher the yield of the pelletizer is.
However, the balling machine of the double-layer round roller sieve has the condition of low screening efficiency, and the main reason of the condition is that the double-layer structure is compact, the space of an upper layer and a lower layer is smaller, the material binding gap of the screen roller is reduced due to the fact that part of the material binding of the screen roller at the lower layer is not easy to clean, and the screening efficiency is reduced; secondly, the roller of the upper layer screen can not actually run to the position of the roller at 1/3, the green pellets in accordance with the size are screened to the lower layer, the actual screening length of the lower layer screen is shortened by a large distance, and the screening efficiency is correspondingly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the double-layer structure is compact, the space of an upper layer and a lower layer is smaller, and the material binding gap of a sieve roller is reduced and the sieving efficiency is reduced because the material binding of the sieve roller at the position of the lower layer is not easy to clean.
In order to solve the technical problems, the utility model provides a pellet grading type round roller screen which comprises a body, wherein the body is provided with a single-layer round roller screen, the single-layer round roller screen comprises a front section round roller screen arranged at the front section of a pelletizer and a rear section round roller screen arranged at the rear section of the pelletizer, the distance between round rollers of the front section round roller screen is smaller than the distance between round rollers of the rear section round roller screen, the front section round roller screen is positioned above a mixing system, the front end part of the rear section round roller screen is connected with an inlet of a shaft furnace through a conveying belt, and the rear end part of the rear section round roller screen is positioned above the mixing system.
The technical effects are as follows: the design becomes one deck sifter, and the roller screening divides two sections, the anterior segment round roller sieve of pelletizer anterior segment and set up in the back end round roller sieve of pelletizer back end, and wherein anterior segment round roller sieve mainly will not reach under the green pellet sieve of size, and the green pellet leads to and returns big compounding system. And screening the green balls with the sizes according with the rear section of the round roller screen, and conveying the green balls to the shaft furnace for roasting through a conveying belt. And the rear section of the circular roller screen screens the green balls with the sizes exceeding the size, and the green balls return to the large mixing system. And the single-layer screen surface only needs to clean the screen surface on the layer, so that the material cleaning condition influencing the screen surface on the lower layer does not exist, the problem that the material sticking on the roller body of the round roller screen cannot be cleaned is solved, the space between the round roller screens is ensured, and the screening efficiency of the round roller screen is ensured.
The front section of the ball grading type round roller screen is longer than the rear section of the round roller screen.
The technical effects are as follows: because the pelletizer supplies materials at the front end, in order to screen green balls at the front end as much as possible, the screening of the green balls at the rear end is reduced, and therefore, the length of the front section round roller screen is greater than that of the rear section round roller screen.
The front ball grading type round roller screen is characterized in that the installation included angle between the front section round roller screen and the ground and the installation included angle between the rear section round roller screen and the ground are not more than 20 degrees.
The technical effects are as follows: the slope setting of anterior segment round roller sieve and back end round roller sieve is in order to accelerate green ball unloading functioning speed, reduces the thickness of green ball, improves and influences screening efficiency, but the too big green ball unloading functioning speed that can lead to of angle of inclination is too fast and can not carry out effectual screening, therefore anterior segment round roller sieve and back end round roller sieve are not more than 20 degrees with the installation contained angle between ground
Preceding a ball grading formula round roller sieve, the length of anterior segment round roller sieve is 3630mm, and the interval between the round roller sieve of anterior segment round roller sieve is not more than 10 mm.
The technical effects are as follows: the front section round roller screen mainly screens green pellets which are less than 10mm, and the green pellets return to a large mixing system.
The ball grading type round roller screen is characterized in that the length of the rear section round roller screen is 1320mm, and the distance between the round roller screens of the front section round roller screen is 10mm-18 mm.
The technical effects are as follows: the rear section round roller screen screens out green balls with the diameter of 10mm-18mm, and the green balls are conveyed to the shaft furnace through a conveying belt for roasting. The back section round roller screen screens the green pellets which exceed 18mm, and the green pellets return to the large mixing system.
The front ball grading type round roller screen is characterized in that the installation included angle between the front section round roller screen and the ground and the installation included angle between the rear section round roller screen and the ground are 13 degrees.
The technical effects are as follows: the inclination angle of the section round roller sieve and the rear section round roller sieve is 13 degrees, so that the green ball feeding running speed is accelerated, the green ball thickness is reduced, and the screening efficiency is improved.
The front ball grading type round roller screen is characterized in that the number of round rollers of the front section round roller screen is 3 times that of round rollers of the rear section round roller screen.
The technical effects are as follows: in order to screen the green balls at the front end as much as possible, the screening of the green balls at the rear end is reduced, and therefore the number of the front section round roller screens is more than that of the rear section round roller screens.
The utility model has the beneficial effects that:
(1) according to the utility model, the single-layer screen surface only needs to be cleaned while the green balls are screened, so that the condition of cleaning the lower-layer screen surface is not influenced, the problem that the sticky material of the roller body of the round roller screen cannot be cleaned is solved, the space between the round roller screens is ensured, and the screening efficiency of the round roller screen is ensured;
(2) the inclined arrangement of the front section round roller sieve and the rear section round roller sieve is used for accelerating the raw ball blanking operation speed, reducing the raw ball thickness and improving the influence on the screening efficiency.
(3) In the utility model, green balls are screened as much as possible at the front end, so that the screening of green balls at the rear end is reduced, and the length and the number of the front section round roller screen are both more than those of the rear section round roller screen.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Wherein: 1. a single-layer round roller screen; 11. a front section round roller screen; 12. and a rear section round roller screen.
Detailed Description
The embodiment provides a ball grading type round roller sieve, which comprises a body, the structure is as shown in the figure, the body is provided with individual layer round roller sieve 1, wherein individual layer round roller sieve 1 is including setting up in the anterior segment round roller sieve 11 of pelletizer anterior segment and setting up in the back end round roller sieve 12 of pelletizer back end, interval between the circle roller of anterior segment round roller sieve 11 is less than the interval between the circle roller of back end round roller sieve 12, anterior segment round roller sieve 11 is located the top of compounding system, the preceding tip of back end round roller sieve 12 passes through the transportation area with the shaft furnace import and is connected, the back end of back end round roller sieve 12 is located the top of compounding system.
The design becomes one deck sifter, and the roller screening divides two sections, the anterior segment round roller sieve 11 of pelletizer anterior segment and sets up in the back end round roller sieve 12 of pelletizer back end, and wherein anterior segment round roller sieve 11 mainly will not reach the green pellet undersize of size, and the green pellet leads to and returns big compounding system. The green pellets of the size are screened out by the rear-section round roller screen 12 and conveyed to the shaft furnace for roasting by a conveyor belt. The rear section round roller screen 12 screens the raw balls with the size exceeding the size, and the raw balls are returned to the large mixing system. And the single-layer screen surface only needs to clean the screen surface on the layer, so that the material cleaning condition influencing the screen surface on the lower layer does not exist, the problem that the material sticking on the roller body of the round roller screen cannot be cleaned is solved, the space between the round roller screens is ensured, and the screening efficiency of the round roller screen is ensured.
The length of the front section round roller screen 11 is larger than that of the rear section round roller screen 12.
Since the pelletizer supplies material at the front end, in order to screen as many green pellets as possible at the front end, the screening of green pellets is reduced at the rear end, and therefore, the length of the front section round roller screen 11 is greater than that of the rear section round roller screen 12.
The installation included angle between the front section round roller screen 11 and the rear section round roller screen 12 and the ground is 13 degrees.
The slope setting of anterior segment round roller sieve 11 and back end round roller sieve 12 is for accelerating green ball unloading functioning speed, reduces the thickness of green ball, improves and influences screening efficiency, but the too big green ball unloading functioning speed that leads to of angle of inclination is too fast and can not carry out effectual screening, therefore the installation contained angle between anterior segment round roller sieve 11 and back end round roller sieve 12 and the ground is 13 degrees.
The length of anterior segment round roller sieve 11 is 3630mm, and the interval between the round roller sieve of anterior segment round roller sieve 11 is not more than 10 mm.
The front section round roller screen 11 will mainly screen down green pellets that are less than 10mm, which are returned to the large mixing system.
The length of the rear section round roller screen 12 is 1320mm, and the distance between the round roller screens of the front section round roller screen 11 is 10mm-18 mm.
The rear section round roller screen 12 screens out green balls with the diameter of 10mm-18mm, and the green balls are conveyed to the shaft furnace through a conveyer belt for roasting. The rear section round roller screen 12 screens the green pellets which exceed 18mm, and the green pellets are returned to the large mixing system.
The number of the round rollers of the front section round roller screen 11 is 3 times of that of the round rollers of the rear section round roller screen 12.
In order to screen as many green balls as possible at the front end, the screening of green balls is reduced at the rear end, and therefore, the number of the front-stage circular roller screens 11 is greater than that of the rear-stage circular roller screens 12.
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a hierarchical formula roller screen of ball, includes the body, its characterized in that: the body is provided with individual layer round roller sieve (1), wherein individual layer round roller sieve (1) is including setting up in anterior segment round roller sieve (11) of pelletizer anterior segment and setting up in back end round roller sieve (12) of pelletizer back end, interval between the round roller of anterior segment round roller sieve (11) is less than the interval between the round roller of back end round roller sieve (12), anterior segment round roller sieve (11) are located the top of compounding system, the preceding tip of back end round roller sieve (12) passes through the transportation area with the shaft furnace import and is connected, the back end of back end round roller sieve (12) is located the top of compounding system.
2. The ball grading type round roller screen as claimed in claim 1, wherein: the length of the front section round roller screen (11) is greater than that of the rear section round roller screen (12).
3. The ball grading type round roller screen as claimed in claim 2, wherein: and the installation included angle between the front section round roller screen (11) and the rear section round roller screen (12) and the ground is not more than 20 degrees.
4. A pellet grading type round roller screen as claimed in claim 3, wherein: the length of the front section round roller screen (11) is 3630mm, and the distance between the round roller screens of the front section round roller screen (11) is not more than 10 mm.
5. A pellet grading type round roller screen as claimed in claim 3, wherein: the length of the rear section round roller screen (12) is 1320mm, and the distance between the round roller screens of the front section round roller screen (11) is 10mm-18 mm.
6. The ball grading type round roller screen as claimed in claim 5, wherein: and the installation included angle between the front section round roller screen (11) and the rear section round roller screen (12) and the ground is 13 degrees.
7. The ball grading type round roller screen as claimed in claim 6, wherein: the number of the round rollers of the front section round roller screen (11) is 3 times that of the round rollers of the rear section round roller screen (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122472327.7U CN216323120U (en) | 2021-10-14 | 2021-10-14 | Ball grading type round roller screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122472327.7U CN216323120U (en) | 2021-10-14 | 2021-10-14 | Ball grading type round roller screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216323120U true CN216323120U (en) | 2022-04-19 |
Family
ID=81176587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122472327.7U Active CN216323120U (en) | 2021-10-14 | 2021-10-14 | Ball grading type round roller screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216323120U (en) |
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2021
- 2021-10-14 CN CN202122472327.7U patent/CN216323120U/en active Active
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