Rocking-turn type steel slag cooling granulator

Abstract

The utility model discloses a rocking-turn type steel slag cooling granulator, which relates to the technical field of energy conservation and environmental protection in the ferrous metallurgy industry, and comprises a rocking-turn roller, the rocking-turn roller comprises a steel slag treatment section, the two ends of the steel slag treatment section are fixedly connected with roller supporting sections, the outer side of the steel slag treatment section is provided with a steel slag material port, and the steel slag material port is connected with the roller supporting sections. A plurality of kick-out devices are arranged in the steel slag treatment section, and the outer surface of the roller supporting section is fixedly connected with a roller body supporting ring and a roller body transmission wheel. By the adoption of the structure, water does not need to be pumped in the steel slag treatment process, cooling and granulation of high-temperature molten steel slag are achieved through circulating cooling air and external circulating cooling water, and waste heat resources, absorbed by the cooling air and the cooling water, of the molten steel slag can be recycled through an external waste heat boiler and other processes; the cooling water pipe bundle is arranged externally, so that leakage caused by abrasion of the membrane wall structure roller is avoided, and the problems of gas explosion and the like caused by water jacket blockage of a jacket type roller are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the energy -conserving and environment -friendly technical field of steel and iron metallurgy industry, in particular to a shake and turn formula steel slag cooling granulation machine. BACKGROUND

[0002] Steel slag is a valuable by-product produced in the process of steel production, and its production rate is 8% to 15% of the crude steel output. High-temperature molten steel slag has a temperature of 1450℃ to 1650℃, and according to the specific heat capacity of 1.2KJ2kJ / (kg·℃), the high-temperature molten steel slag has a heat enthalpy value of not less than 2000MJ / t, which belongs to high-quality waste heat resources. The high-temperature molten steel slag has a small surface area, the viscosity of the steel slag increases sharply with the decrease of the temperature, and the thermal conductivity coefficient of the steel slag is small, which leads to the fact that the heat of the high-temperature section of the steel slag cannot be effectively utilized. At present, the high-temperature molten steel slag treatment process generally cools and granulates the high-temperature molten steel slag by water cooling first, and then enters the digestion zone to digest the free calcium oxide so as to separate and utilize the steel slag.

[0003] The existing high-temperature molten steel slag cooling and granulating device mainly cools and granulates the high-temperature molten steel slag by means of roller pressing and crushing combined with water cooling. For example, the Chinese utility model patent with the publication number CN216224624U discloses a "granulating equipment", which is used in combination with the Chinese utility model patent with the publication number CN213966462U "granulating bed equipment and granulating device". The high-temperature molten steel slag is poured on the granulating bed, and the granulating equipment and the granulating bed move back and forth horizontally, and a large amount of cooling water needs to be sprayed to cool and granulate the high-temperature molten steel slag. Due to the high temperature of the steel slag and the presence of some steel blocks, the granulating equipment needs to be driven by a large-power motor, which has high energy consumption and serious wear of the crushing teeth, and has a short service life. In order to adapt to the above-mentioned working conditions, the core components of this granulating equipment include a bearing seat and a support structure, which need to have high rigidity, so the equipment components are large in size and complex in structure, which is not conducive to maintenance. UTILITY MODEL CONTENTS

[0004] In view of the problems mentioned in the background art, the utility model aims to provide a shake and turn formula steel slag cooling granulation machine to solve the problems mentioned in the background art.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme:

[0006] The utility model provides a kind of rotary steel slag cooling granulator, including rotary drum, the rotary drum includes steel slag processing section, both ends of the steel slag processing section are fixedly connected with drum support section, the outside of the steel slag processing section is equipped with steel slag material hole, the inside of the steel slag processing section is provided with multiple poking devices, the outer surface of the drum support section is fixedly connected with cylinder support ring and cylinder transmission wheel, the lower end of the cylinder support ring and cylinder transmission wheel is provided with a roller device and drive device, the roller device and drive device prop up rotary drum, the outside of the rotary drum is provided with sealing cover, the other end of the drum support section of the one end of the rotary drum is fixedly connected with air inlet device, the other end of the drum support section of the other end of the rotary drum is fixedly connected with air outlet device, the other end of air inlet device and air outlet device is fixedly connected with inlet and outlet air pipe, the inlet and outlet air pipe and sealing cover are mutually sealed connection, the outside of the rotary drum is provided with cooling assembly.

[0007] As a preferred technical solution, the roller device includes a support seat, a plurality of stop wheel groups are provided on the upper end of the support seat, and a plurality of roller groups are provided on both sides of the stop wheel groups on the upper end of the support seat.

[0008] As a preferred technical solution, the roller group includes a roller bearing seat provided on the upper end of the support seat, a roller shaft is provided on the inner side of the roller bearing seat, and a roller body is provided on the outer surface of the roller shaft.

[0009] As a preferred technical solution, the roller group includes a roller bearing seat provided on the upper end of the support seat, a roller shaft is provided on the inner side of the roller bearing seat, and a roller body is provided on the outer surface of the roller shaft.

[0010] As a preferred technical solution, the drive device includes a motor reducer, a coupling is provided on the other end of the motor reducer, a drive shaft is provided on the other end of the coupling, a motor bearing seat is provided on the other end of the drive shaft, and a drive wheel is provided on the outer surface of the drive shaft.

[0011] As a preferred technical solution, the drive wheel is meshingly connected with the peripheral side of the cylinder transmission wheel, the outer side of the roller body is rotatably connected with the outer side of the cylinder support ring, and the outer side of the roller body is movably connected with the outer side of the cylinder support ring.

[0012] As a preferred technical solution, the cooling assembly includes a fin plate provided on the outer side of the rotary drum, a header pipe is provided on the outer side of the drum support section, a rotary joint is provided on the outer side of the header pipe, a cooling water pipe is provided on the other end of the header pipe, a plurality of cooling water pipes are provided, and the cooling water pipes are provided on the outer side of the rotary drum.

[0013] In summary, the utility model mainly has the following beneficial effects:

[0014] There is no extrusion of mechanical parts in the slag crushing process, and the slag does not need horizontal displacement in the drum. The slag and contact parts including the inner wall of the rocking drum and the feeder are relatively stationary, which greatly reduces wear compared with the existing technology; the rocking drum only needs to drive the slag to rock forward and backward, without extrusion and crushing, and no horizontal displacement, which greatly reduces the power of the driving motor compared with the existing technology; the utility model only rotates the rocking drum back and forth, and the supporting wheel device, the blocking wheel, etc. are all non-powered devices, which saves energy consumption, has a simple structure and requires little maintenance; at the same time, the utility model does not need to pump water during the slag processing process, and adopts circulating cooling air and external circulating cooling water to realize the cooling and granulation of high-temperature molten slag. The waste heat resources of the molten slag absorbed by the cooling air and cooling water can be recovered through external waste heat boilers and other processes; the cooling water pipe bundle is external, which avoids leakage caused by wear of the membrane wall structure drum and avoids problems such as gas explosion caused by blockage of the water jacket of the jacketed drum; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the cylinder support section of the present utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the slag processing section of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the cylinder transmission wheel of the utility model;

[0020] Figure 6 It is a schematic diagram of the driving device of the utility model;

[0021] Figure 7 It is a schematic diagram of the supporting roller device of the present utility model;

[0022] Figure 8 This utility model Figure 7 Left view of;

[0023] Figure 9 This utility model is along Figure 8 Cross-section of the mid-DD line;

[0024] Figure 10 This utility model is along Figure 8 Cross-section along line EE;

[0025] Figure 11 This utility model Figure 1 A partial enlarged view of the middle point;

[0026] Figure 12 is along the Figure 11 sectional view along the line F-F in Fig.

[0027] Reference signs: 1, rotary drum; 11, steel slag treatment section; 111, steel slag inlet; 112, material stirring device; 12, drum support section; 121, drum body support ring; 122, drum body transmission wheel; 2, supporting roller device; 21, supporting roller set; 211, supporting roller bearing seat; 212, supporting roller body; 213, supporting roller shaft; 22, blocking roller set; 221, blocking roller bearing seat; 222, blocking roller body; 23, support seat; 3, driving device; 31, motor speed reducer; 32, shaft coupling; 33, motor bearing seat; 34, driving shaft; 35, driving wheel; 4, air inlet device; 5, air outlet device; 45, air inlet and outlet pipe; 6, cooling assembly; 61, rotary joint; 62, header pipe; 63, cooling water pipe; 64, fin plate; 7, sealing cover. DETAILED DESCRIPTION

[0028] EMBODIMENT

[0029] With reference to Figures 1 to 12 , the rotary drum steel slag cooling and granulating machine comprises a rotary drum 1, the rotary drum 1 comprises a steel slag treatment section 11, both ends of the steel slag treatment section 11 are fixedly connected with drum support sections 12, a steel slag inlet 111 is formed in the outer side of the steel slag treatment section 11, a plurality of material stirring devices 112 are arranged in the interior of the steel slag treatment section 11, the outer surfaces of the drum support sections 12 are fixedly connected with drum body support rings 121 and drum body transmission wheels 122, the lower ends of the drum body support rings 121 and the drum body transmission wheels 122 are provided with a supporting roller device 2 and a driving device 3, the supporting roller device 2 and the driving device 3 support the rotary drum 1, the outer side of the rotary drum 1 is provided with a sealing cover 7, one end of the rotary drum 1 is fixedly connected with an air inlet device 4 at the other end of the drum support section 12, the other end of the rotary drum 1 is fixedly connected with an air outlet device 5 at the other end of the drum support section 12, the other ends of the air inlet device 4 and the air outlet device 5 are fixedly connected with an air inlet and outlet pipe 45, the air inlet and outlet pipe 45 is sealingly connected with the sealing cover 7, and the outer side of the rotary drum 1 is provided with a cooling assembly 6.

[0030] With reference to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 and Figure 10The supporting seat 23 is provided with a plurality of stop wheel groups 22 at the upper end thereof, and a plurality of supporting wheel groups 21 are arranged at the two sides of the upper end of the supporting seat 23. The supporting wheel group 21 comprises a supporting wheel bearing seat 211 arranged at the upper end of the supporting seat 23, and a supporting wheel shaft 213 is arranged at the inner side of the supporting wheel bearing seat 211. The outer surface of the supporting wheel shaft 213 is provided with a supporting wheel body 212. The supporting wheel group 21 comprises a supporting wheel bearing seat 211 arranged at the upper end of the supporting seat 23, and a supporting wheel shaft 213 is arranged at the inner side of the supporting wheel bearing seat 211. The outer surface of the supporting wheel shaft 213 is provided with a supporting wheel body 212. The supporting wheel group 21 is installed at the lower part of the cylinder supporting ring 121, and the included angle between the two supporting wheel groups 21 and the center line of the rocking roller 1 is not more than 75°, so as to ensure that the gravity center of the rocking roller 1 falls between the two supporting wheel groups 21. Each supporting wheel group 21 comprises two supporting wheel bearing seats 211, one supporting wheel shaft 213 and one supporting wheel body 212. The shaft is connected with the supporting wheel body 212 through a key, and the supporting wheel bearing seat 211 is fixed on the supporting seat 23 by bolts. Each stop wheel group 22 comprises a stop wheel bearing seat 221 and a stop wheel body 222, which are arranged at the two sides of the cylinder supporting ring 121 and are fixed on the supporting seat 23 by bolts.

[0031] Reference Figure 1 and Figure 6 The driving device 3 comprises a motor reducer 31, the other end of the motor reducer 31 is provided with a shaft coupling 32, the other end of the shaft coupling 32 is provided with a driving shaft 34, the other end of the driving shaft 34 is provided with a motor bearing seat 33, the outer surface of the driving shaft 34 is provided with a driving wheel 35, the circumferential side of the driving wheel 35 is meshingly connected with the circumferential side of the cylinder transmission wheel 122, the outer side of the supporting wheel body 212 is rotatably connected with the outer side of the cylinder supporting ring 121, and the outer side of the supporting wheel body 212 is movably connected with the outer side of the cylinder supporting ring 121. The driving device 3 comprises a motor reducer 31, a shaft coupling 32, a motor bearing seat 33, a driving shaft 34 and a driving wheel 35. The motor reducer 31 transmits the torque to the driving shaft 34 through the shaft coupling 32. The driving shaft 34 is connected with the driving wheel 35 through a key and transmits the torque to the driving wheel 35. The driving wheel 35 is a gear structure, which is meshed with the cylinder transmission wheel 122 to realize torque transmission and finally drive the rocking roller 1 to rock. The two motor bearing seats 33 ensure the stable operation of the driving wheel 35 and the precise meshing of the driving wheel 35 and the cylinder transmission wheel 122.

[0032] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 12The cooling assembly 6 comprises fin plates 64 arranged outside the rotary drum 1, a header pipe 62 is arranged outside each of the drum support sections 12, a rotary joint 61 is arranged outside each of the header pipes 62, and a cooling water pipe 63 is arranged at the other end of each of the header pipes 62, a plurality of the cooling water pipes 63 are arranged outside the rotary drum 1; the rotary joint 61 is arranged in line with the center line of the rotary drum 1, one end of the rotary joint 61 is connected with the header pipe 62 through a communication pipe and rotates together with the rotary drum 1, and the other end is connected with a fixed water pipe fixedly installed on the air tank of the air inlet device 4, so as to realize the combination of static and dynamic of the cooling water pipe 63 bundle.

[0033] Principle and advantages: the rotary drum 1 adopts a three-section variable-diameter structure, the steel slag treatment section 11 at the middle position has a larger diameter to improve the steel treatment capacity, and the drum support sections 12 at both sides are as small as possible to reduce the self-weight of the equipment under the premise of meeting the ventilation volume and overall strength; the steel slag treatment section 11 is made of high-temperature-resistant and high-strength alloy, and is connected with the drum support sections 12 at both sides through variable-diameter joints, the angle between the outer wall of the variable-diameter joint and the horizontal axis is not less than 40°, which ensures that the steel slag can flow back to the steel slag treatment section 11; the rotary drum 1 is provided with only one material port, which can be used for receiving molten steel slag and discharging cooled steel slag, the high-temperature steel slag does not need to be horizontally displaced in the rotary drum 1, which maximally reduces the wear of the inner wall of the rotary drum and the material pusher 112, and also reduces energy consumption; during the feeding process, the steel slag material port 111 faces upward to receive high-temperature molten steel slag from a slag tank, and during the discharging process, the steel slag material port 111 faces downward; four rows of material pushers 112 are arranged in the steel slag treatment section 11 in a staggered manner, the included angle between adjacent two material pushers 112 in each row of material pushers 112 is not less than 40°, so as to ensure that there is enough gap to accept large pieces of steel slag; adjacent two rows of material pushers 112 are arranged in a staggered manner with an included angle of 20°, and the molten steel slag is disturbed and granulated after being carried by the material pushers 112 due to the staggered arrangement of the adjacent two rows of material pushers 112; the height of the material pusher 112 is set to 1 / 8 of the diameter of the cylinder body of the steel slag treatment section 11, which ensures the throwing effect of the carried steel slag under the premise of ensuring the treatment capacity of the equipment; the material pusher 112 is fixed to the mounting seat fixedly welded to the inner wall of the cylinder body through fasteners, the body of the material pusher 112 is made of high-temperature-resistant alloy steel, and the surface has a temperature-resistant and wear-resistant hardfacing layer; the drum support sections 12 at both sides are made of high-strength alloy steel, the cylinder body support ring 121 is welded to the outer wall of the drum support section 12 through four webs, and the cylinder body transmission wheel 122 is welded to the outer wall of the drum support section 12 through webs and ribs.

Claims

1. A rotary steel slag cooling and granulating machine, characterized in that: The utility model provides a steel slag processing device, including the swing roller (1), the swing roller (1) includes steel slag processing section (11), both ends of steel slag processing section (11) are fixedly connected with roller support section (12), the outside of steel slag processing section (11) is opened with steel slag material mouth (111), the inside of steel slag processing section (11) is provided with a plurality of poking device (112), the outer surface of roller support section (12) is fixedly connected with cylinder support ring (121) and cylinder transmission wheel (122), the lower end of cylinder support ring (121) and cylinder transmission wheel (122) is provided with the carrier roller device (2) and drive arrangement (3), the carrier roller device (2) and drive arrangement (3) prop up swing roller (1), the outside of swing roller (1) is provided with sealing cover (7), the roller support section (12) of swing roller (1) one end is fixedly connected with the air inlet device (4) of another end, the roller support section (12) of swing roller (1) other end is fixedly connected with the air outlet device (5) of another end, the other end of air inlet device (4) and air outlet device (5) is fixedly connected with inlet and outlet air pipe (45), inlet and outlet air pipe (45) and sealing cover (7) are sealedly connected, the outside of swing roller (1) is provided with cooling assembly (6).

2. A rotary steel slag cooling and granulating machine according to claim 1, characterized in that: The carrier roller device (2) includes a support seat (23), a plurality of stop wheel groups (22) are arranged on the upper end of the support seat (23), and a plurality of carrier roller groups (21) are arranged on the two sides of the upper end of the support seat (23).

3. A rotary steel slag cooling and granulating machine according to claim 2, characterized in that: The carrier roller group (21) includes a carrier roller bearing seat (211) arranged on the upper end of the support seat (23), and carrier roller shafts (213) are arranged on the inner sides of the carrier roller bearing seats (211).

4. A rotary steel slag cooling and granulating machine according to claim 3, characterized in that: The stop wheel group (22) includes a stop wheel bearing seat (221) arranged on the upper end of the support seat (23), and stop wheel bodies (222) are arranged on the upper ends of the stop wheel bearing seats (221).

5. A rotary steel slag cooling and granulating machine according to claim 4, characterized in that: The drive device (3) includes a motor speed reducer (31), a coupling (32) is arranged on the other end of the motor speed reducer (31), a drive shaft (34) is arranged on the other end of the coupling (32), a motor bearing seat (33) is arranged on the other end of the drive shaft (34), and a drive wheel (35) is arranged on the outer surface of the drive shaft (34).

6. A rotary steel slag cooling and granulating machine according to claim 5, characterized in that: The drive wheel (35) is meshedly connected with the cylinder transmission wheel (122) in the circumferential direction, the outer side of the carrier roller body (212) is rotatably connected with the outer side of the cylinder support ring (121), and the outer side of the carrier roller body (212) is movably connected with the outer side of the cylinder support ring (121).

7. A rotary steel slag cooling and granulating machine according to claim 1, characterized in that: The cooling assembly (6) comprises fin plates (64) arranged outside the swing roller (1), the outer side of the roller supporting section (12) is provided with a header pipe (62), the outer side of the header pipe (62) is provided with a rotary joint (61), the other end of the header pipe (62) is provided with a cooling water pipe (63), a plurality of cooling water pipes (63) are arranged, and the cooling water pipes (63) are located outside the swing roller (1).

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