A sorting device for production of heat accumulating balls
By designing a sorting device with rollers and multi-layer screens, the problems of low screening efficiency and clogging in the production of regenerator balls were solved, achieving efficient and accurate sorting results and reducing manual sorting costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZILI ADVANCED MATERIALS CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-12
AI Technical Summary
Existing technologies for the production of thermal regenerator balls suffer from problems such as low screening efficiency, poor accuracy, and easy clogging of the screen, especially when screening thermal regenerator balls of different diameters, it is difficult to efficiently separate them and avoid the balls clogging the screen holes.
Design a sorting device that includes a drum and multiple screens. The device uses a figure-eight gate to achieve circulating screening of heat storage balls. Multiple screens are used to screen out heat storage balls of different diameters, and balls of a third diameter are discharged through an opening to prevent them from mixing and entering the finished product silo.
It improves the efficiency and accuracy of heat storage ball sorting, avoids screen clogging, achieves efficient and accurate sorting results, and reduces the cost of manual sorting.
Smart Images
Figure CN224346403U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corundum thermal storage ball production, specifically to a sorting device for thermal storage ball production. Background Technology
[0002] With increasing demands for energy conservation and emission reduction, higher requirements are being placed on energy saving. In the steel rolling and aluminum smelting industries, high-temperature heating furnaces are needed, such as steel rolling furnaces, aluminum melting furnaces, and reverberatory furnaces. These furnaces are all equipped with regenerative burners to save energy.
[0003] A regenerative burner system typically consists of two burners and two accumulators. While one burner uses hot air from the accumulator for combustion, the other burner acts as a flue gas outlet, drawing hot air from the furnace through the burner and into the accumulator for heat storage. Once sufficient heat has been stored, a reversing valve activates, switching the function of the two burners.
[0004] There are two types of heat storage materials in a heat accumulator: one is in the form of checkerboard bricks, and the other is a heat storage ball. Heat storage balls have a longer service life and do not suffer from the collapse and deformation problems associated with checkerboard brick-type heat storage materials. They are also less expensive to manufacture than checkerboard brick-type materials.
[0005] Currently, the primary material required for thermal regenerator balls is corundum, with diameters typically ranging from 25mm to 10mm. There are two production methods for thermal regenerator balls: one involves grinding fine powder into balls and then firing them in a tunnel kiln. However, this method results in high gas consumption, poor grain development, and poor thermal shock stability. The other method uses a vertical kiln, where green balls of all required diameters are fed into the kiln for co-firing, followed by manual selection of the balls that meet the requirements. While this method offers better performance, the manual selection process is costly. To overcome the drawbacks of manual selection, ordinary linear sieves are also used for screening, but this is prone to clogging the sieve.
[0006] Therefore, a screening device needs to be designed to efficiently and accurately screen heat storage balls of different diameters for use in different fields. Utility Model Content
[0007] In view of the above-mentioned technical problems and the shortcomings of the field, this utility model provides a sorting device for the production of thermal regenerator balls, which can solve the sorting problem of thermal regenerator balls of different diameters. Compared with ordinary sorting equipment, the efficiency and accuracy are greatly improved, and the disadvantages of ordinary screens being prone to material jamming or screen hole blockage are avoided.
[0008] The specific technical solution is as follows:
[0009] A sorting device for the production of thermal regenerator balls includes a drum and a third screen;
[0010] The drum includes a front section and a rear section connected by a figure-eight gate; the figure-eight gate is used for the mutual transfer of heat storage balls between the front section and the rear section; the front section is provided with a first screen for screening out heat storage balls of a first diameter; the rear section is provided with a second screen for screening out heat storage balls of a second diameter and heat storage balls of a first diameter that the first screen could not screen out; the drum has an opening in the cylinder wall corresponding to the rear section for screening out heat storage balls of a third diameter.
[0011] The third screen is used to separate the second diameter heat storage balls that were screened out by the second screen and the first diameter heat storage balls that were not screened out by the first screen.
[0012] When the above-mentioned sorting equipment for producing thermal regenerator balls is in use: the first screen at the front end screens out thermal regenerator balls of the first diameter, which are the oversize material of the first screen and can be discharged from the front outlet of the drum. The undersize material of the first screen enters the rear section under the transfer action of the figure-eight gate and is screened by the second screen; the second screen screens out thermal regenerator balls of the second diameter and the first diameter thermal regenerator balls that the first screen could not screen out in time, which are the oversize material of the second screen and can be discharged from the rear outlet of the drum. The undersize material of the second screen passes through the drum. The third diameter heat storage balls are screened out through the opening in the cylinder wall corresponding to the rear section of the cylinder. The second diameter heat storage balls discharged from the rear outlet of the cylinder and the first diameter heat storage balls that the first screen could not screen out in time are screened by the third screen. The material on the third screen is the first diameter heat storage balls that the first screen could not screen out in time, and the material under the third screen is the second diameter heat storage balls. The heat storage balls that cannot be screened or screened out in time at the rear section of the cylinder can be transferred back to the front section of the cylinder through the figure-eight gate for circulation until all the material is discharged, thus completing the sorting of mixed heat storage balls of different diameters, which can achieve the effect of saving time and effort.
[0013] In some embodiments, the diameter of the first diameter heat storage ball in the sorting equipment for producing heat storage balls can be 25 mm.
[0014] In some embodiments, the sorting equipment for producing heat storage balls may be made of stainless steel strips arranged at intervals. Further, the interval between these stainless steel strips may be 24 mm. These stainless steel strips may be fixed by axial support strips on their outer surfaces, thereby forming a cylindrical structure coaxial with the drum.
[0015] In some embodiments, the diameter of the second diameter heat storage ball in the sorting equipment for producing heat storage balls can be 19 mm.
[0016] In some embodiments, in the sorting equipment for producing heat storage balls, the second screen may be made of stainless steel strips arranged at intervals. Further, the interval between these stainless steel strips may be 18 mm. These stainless steel strips may be fixed by axial support strips on their outer surfaces, thereby forming a cylindrical structure coaxial with the drum.
[0017] In some embodiments, the third screen of the sorting equipment for producing heat storage balls may be made of stainless steel strips arranged at intervals, and further, the interval between these stainless steel strips may be 24 mm.
[0018] In some embodiments, the diameter of the third diameter heat storage ball in the sorting equipment for producing heat storage balls can be 10 mm.
[0019] In some embodiments, the sorting equipment for producing heat storage balls may have multiple openings, further, forming two or more rings distributed along the roller axis, and even further, each ring may have 12 evenly distributed openings.
[0020] In some embodiments, the sorting device for producing heat storage balls may have an opening that is elongated, and further, the length direction of the opening may be consistent with the circumferential direction of the roller, and the width of the opening may be 12 mm.
[0021] In some embodiments, the sorting equipment for producing heat storage balls may further include a feeding conveyor belt that extends from the front end of the drum into the front section for feeding heat storage balls of different diameters to be sorted.
[0022] In some embodiments, the sorting equipment for producing thermal regenerator balls may further include a first ball chamber for receiving thermal regenerator balls of a first diameter screened out by a first screen.
[0023] In some embodiments, the sorting equipment for producing thermal regenerator balls may further include a second ball chamber for receiving thermal regenerator balls of a second diameter screened out by a second screen and a third screen.
[0024] In some embodiments, the sorting equipment for producing thermal regenerator balls may further include a third ball chamber for receiving thermal regenerator balls of a third diameter that are screened out through the opening.
[0025] In some embodiments, the sorting equipment for producing thermal regenerator balls may further include a fourth ball chamber for receiving thermal regenerator balls of the first diameter screened out by the third screen.
[0026] Compared with the prior art, the advantages of this utility model are as follows:
[0027] The sorting equipment for producing regenerator balls provided by this utility model can solve the problem of sorting regenerator balls of different diameters. Compared with ordinary sorting equipment, its efficiency and accuracy are greatly improved, avoiding the drawbacks of ordinary screens that are prone to material jamming or screen hole clogging. At the same time, due to the setting of the figure-eight gate in the middle, effective circulating screening can be carried out, avoiding the danger of balls of different sizes being mixed and entering the finished product silo. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of a sorting device for producing heat storage balls according to a specific embodiment of this utility model. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.
[0030] See Figure 1A sorting device for producing thermal regenerator balls includes a drum 1, a feed conveyor belt 6, a first ball bin 2, a second ball bin 3, a third ball bin 4, a fourth ball bin 5, and a third screen 9. The drum 1 includes a front section 12 and a rear section 13 connected by a figure-eight gate 11. The figure-eight gate 11 is used for the mutual transfer of thermal regenerator balls between the front section 12 and the rear section 13. The front section 12 contains a first screen 7, which is made of stainless steel strips with a diameter of 10 mm arranged at intervals. This screen is used to screen out thermal regenerator balls of a first diameter. These stainless steel strips are fixed by axial support bars on their outer surfaces, thus forming a cylindrical structure coaxial with the drum 1. The rear section 13 contains a second screen 8, which is also made of stainless steel strips with a diameter of 10 mm arranged at intervals. This screen is used to screen out thermal regenerator balls of a second diameter and those of a first diameter that the first screen 7 cannot screen out. These stainless steel strips are fixed by axial support bars on their outer surfaces, thus forming a cylindrical structure coaxial with the drum 1. The third screen 9 is made of stainless steel strips with a diameter of 10mm arranged at intervals. It is located at the outlet of the heat storage balls at the rear end of the rear section 13 and above the second ball chamber 3. The third screen 9 is used to screen the second diameter heat storage balls screened out by the second screen 8 and the first diameter heat storage balls that the first screen 7 could not screen out in time. The third screen 9 can be tilted appropriately to facilitate the discharge of the material on its screen, namely the first diameter heat storage balls that the first screen 7 could not screen out in time. The drum 1 has an opening 10 on the cylinder wall corresponding to the rear section 13 for screening out the third diameter heat storage balls. There are multiple openings 10, forming a five-ring structure evenly distributed along the axial direction of the drum 1, with 12 evenly distributed openings 10 in each ring, that is, one opening 10 is set every 30° on one ring. The opening 10 is long and strip-shaped, and its length direction is consistent with the circumference of the drum 1. The feed conveyor belt 6 extends from the front end of the drum 1 into the area enclosed by the first screen 7 in the front section 12. A chute can be set at the tail end of the feed conveyor belt 6 to facilitate the feeding of heat storage balls of different diameters to be sorted. The first ball chamber 2 is located at the outlet of the heat storage ball at the front end of the front section 12, and is used to receive the heat storage balls of the first diameter screened out by the first screen 7. The second ball chamber 3 is used to receive the heat storage balls of the second diameter screened out by the second screen 8 and the third screen 9. The third ball chamber 4 is located below the opening 10, and is used to receive the heat storage balls of the third diameter screened out by the opening 10. The fourth ball chamber 5 is used to receive the heat storage balls of the first diameter screened out by the third screen 9.
[0031] Specifically, the diameter of the first diameter heat storage ball is 25mm, the stainless steel strip rings of the first screen 7 are spaced 24mm apart, the diameter of the second diameter heat storage ball is 19mm, the stainless steel strip rings of the second screen 8 are spaced 18mm apart, the stainless steel strips of the third screen 9 are spaced 24mm apart, the diameter of the third diameter heat storage ball is 10mm, and the width of the opening 10 is 12mm.
[0032] When the sorting equipment for producing thermal regenerator balls is in use: the feed conveyor belt 6 feeds a mixture of thermal regenerator balls of different diameters (10mm, 19mm, and 25mm), consisting of third-diameter thermal regenerator balls, second-diameter thermal regenerator balls, and first-diameter thermal regenerator balls, into the front section 12 of the drum 1. The first-diameter thermal regenerator balls are screened out by the first screen 7. These first-diameter thermal regenerator balls are the oversize material of the first screen 7 and can be discharged from the front outlet of the drum 1 into the first ball bin 2, where 25mm finished balls are collected. The undersize material of the first screen 7 enters the rear section 13 under the transfer action of the figure-eight gate 11 and is screened by the second screen 8. The second screen 8 screens out the second-diameter thermal regenerator balls and the first-diameter thermal regenerator balls that the first screen 7 could not screen out in time. These second-diameter thermal regenerator balls and the first-diameter thermal regenerator balls that the first screen 7 could not screen out in time are the oversize material of the second screen 8 and can be discharged from the rear outlet of the drum 1. The undersize material of the second screen 8 passes through... The 10-mm finished balls are screened out through the opening 10 on the cylinder wall of the rear section 13 of drum 1 and enter the third ball chamber 4. The second diameter heat storage balls discharged from the rear outlet of drum 1 and the first diameter heat storage balls that the first screen 7 could not screen out in time are screened by the third screen 9. The material on the third screen 9 is the first diameter heat storage balls that the first screen 7 could not screen out in time (the amount of these balls will be very small), which flows into the fourth ball chamber 5 and is collected as 25mm finished balls. The material under the third screen 9 is the second diameter heat storage balls, which enter the second ball chamber 3 and is collected as 19mm finished balls. The heat storage balls that cannot be screened or screened out in time in the rear section 13 of drum 1 can be transferred back to the front section 12 of drum 1 through the figure-eight gate 11 for circulation, which fully ensures that all heat storage balls enter their respective ball chambers until all are discharged, thus completing the sorting of mixed heat storage balls of different diameters, which can achieve the effect of saving time and effort.
[0033] Furthermore, it should be understood that after reading the above description of this utility model, those skilled in the art can make various alterations or modifications to this utility model, and these equivalent forms also fall within the scope defined by the appended claims.
Claims
1. A sorting device for the production of thermal regenerator balls, characterized in that, Includes drums and a third screen; The drum includes a front section and a rear section connected by a figure-eight gate; the figure-eight gate is used for the mutual transfer of heat storage balls between the front section and the rear section; the front section is provided with a first screen for screening out heat storage balls of a first diameter; the rear section is provided with a second screen for screening out heat storage balls of a second diameter and heat storage balls of a first diameter that the first screen could not screen out; the drum has an opening in the cylinder wall corresponding to the rear section for screening out heat storage balls of a third diameter. The third screen is used to separate the second diameter heat storage balls that were screened out by the second screen and the first diameter heat storage balls that were not screened out by the first screen.
2. The sorting equipment according to claim 1, characterized in that, The diameter of the first heat storage ball is 25 mm; The first screen is made of stainless steel strips arranged at intervals of 24 mm. These stainless steel strips are fixed by axial support strips on their outer side, so that the first screen forms a cylindrical structure coaxial with the drum.
3. The sorting equipment according to claim 1, characterized in that, The diameter of the second diameter heat storage ball is 19 mm; The second screen is made of stainless steel strips arranged at intervals of 18mm. These stainless steel strips are fixed by axial support strips on their outer sides, so that the second screen forms a cylindrical structure coaxial with the drum.
4. The sorting equipment according to claim 1 or 2, characterized in that, The third screen is made of stainless steel strips arranged at intervals of 24 mm.
5. The sorting equipment according to claim 1, characterized in that, The diameter of the third diameter heat storage ball is 10 mm.
6. The sorting equipment according to claim 1, characterized in that, The openings are multiple, forming two or more rings distributed along the axial direction of the roller, with 12 evenly distributed openings in each ring.
7. The sorting equipment according to claim 1, characterized in that, The opening is elongated, with its length aligned with the circumference of the roller, and a width of 12mm.
8. The sorting equipment according to claim 1, characterized in that, The sorting equipment also includes a feeding conveyor belt that extends from the front end of the drum into the front section to feed in heat storage balls of different diameters to be sorted.
9. The sorting equipment according to claim 1, characterized in that, The sorting equipment also includes: The first ball chamber is used to receive the first diameter heat storage balls screened out by the first screen. The second ball chamber is used to receive the second diameter heat storage balls screened out by the second and third screens; The third ball chamber is used to receive the third diameter heat storage balls screened out by the opening. The fourth ball chamber is used to receive the first diameter heat storage balls screened out by the third screen.