Slag penetrating prevention slag cooler
By setting up cutoff blocks and anti-slag sections in the middle of the spiral slag guide sheet of the slag cooling machine and in the cylinder, the problems of high-temperature slag and fire passing out are solved, which significantly reduces the fire risk and ensures the safety and reliability of the equipment.
Patent Information
- Application Number
- CN202510511676.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-07-01
AI Technical Summary
When existing slag cooling machines have loopholes in slag drainage, high-temperature slag and fire can easily penetrate from the slag cooling machine's slag guide plate, resulting in damage to the slag conveying equipment or fire.
A cutoff block matching the diameter of the channel is provided in the middle of the spiral slag guide sheet of the slag cooling machine, and a high-temperature, medium-temperature and low-temperature anti-slag section is added to the cylinder body. A cutoff block is provided in each slag section to prevent the passage of high-temperature slag material and furnace fire.
It effectively prevents high-temperature slag and fire from passing through the slag cooling machine, reduces the risk of damage to slag conveying equipment and fire, and ensures the safety and reliability of the equipment.
Smart Images
Figure CN120232022A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of slag coolers, and more particularly to an anti-piercing slag cooler. Background Art
[0002] A slag cooler is a device for cooling high-temperature furnace slag. It includes a base, a motor reducer fixed on the base, two tracks surrounding the cylinder body fixed on the outer wall of the cylinder, the tracks are placed on the supporting wheels of the base, there is also a large sprocket on the outer wall of the cylinder, the large sprocket is connected to the driving sprocket of the motor reducer through a chain, the front end of the cylinder body is provided with a slag inlet communicating with the lower slag pipe, the lower slag pipe is communicated with the upper boiler, the rear end of the cylinder body is provided with a slag discharge port, spiral slag guiding vanes are welded on the inner wall of the cylinder body, the cylinder body is a double-wall structure, the space between the double walls is a water jacket, there is cooling water in the water jacket, water inlet pipe and a return pipe communicating with the water jacket are provided outside the cylinder body, the water inlet pipe is connected to the water outlet on the rotary joint at the rear end of the cylinder body, the return pipe is connected to the rotary return pipe of the rotary joint, the motor reducer works to drive the cylinder body to rotate, thereby driving the furnace slag to move forward in the cylinder body while cooling the furnace slag through the cooling water, and then the furnace slag is discharged from the slag discharge port.
[0003] On the inner wall of the existing slag cooler, a circle of spiral slag guiding vanes is welded, that is, the outer diameter of the spiral slag guiding vanes is welded on the inner wall of the slag cooler cylinder, and there is a distance between the inner diameter of the spiral slag guiding vanes and the axial center line of the cylinder body. In this way, an axial channel is formed in the middle of the inner wall of the cylinder body (i.e., the middle of the spiral slag guiding vanes).
[0004] When the boiler discharges furnace slag and there is a leak when the furnace slag is emptied, the fire of the boiler will be blown into the slag cooler by the positive pressure air of the boiler. The high-temperature furnace slag and fire at about 1000 °C enter the slag cooler and pass through the channel in the middle of the spiral slag guiding vanes of the slag cooler, which will damage the slag conveying equipment downstream of the slag cooler. When the slag conveying equipment is a belt conveyor, it will cause the belt conveyor to catch fire and burn. When the slag conveying equipment is a scraper conveyor or a chain bucket conveyor, the equipment will be deformed and even scrapped under the influence of the high-temperature fire.
[0005] This greatly increases the possibility of fire at the site and is highly dangerous. Summary of the Invention
[0006] The technical problem to be solved by the present invention is to provide an anti-piercing slag cooler that can prevent high-temperature furnace slag and fire from passing through the slag cooler when there is a leak when the furnace slag is emptied.
[0007] The object of the present invention is achieved as follows: It includes a base, on which a motor reducer is fixed. A slag discharge pipe is fixed at the front end of the base, and a rotary joint is connected to the rear end of the base. Two tracks surrounding the cylinder are fixed on the outer wall of the cylinder. The base is provided with supporting wheels at positions corresponding to the two tracks. The two tracks on the outer wall of the cylinder are respectively placed on the corresponding supporting wheels of the base. A large sprocket is also provided on the cylinder between the two tracks. The large sprocket is connected to the driving sprocket of the motor reducer through a chain. There is a slag inlet at the front end inside the cylinder, and the said slag discharge pipe extends into the slag inlet. A number of inclined slag guiding plates A are welded on the inner wall of the slag inlet. The cylinder is of a double-wall structure, and the space between the double walls of the cylinder is a water jacket. A number of water inlet pipes and water return pipes connected to the water jacket are fixed outside the cylinder. The other end of the water inlet pipe is connected to the water outlet on the rotary joint, and the other end of the water return pipe is connected to the rotary water return pipe of the rotary joint. A slag outlet is provided at the rear end of the cylinder, and a number of inclined slag guiding plates B are welded on the inner wall of the slag outlet.
[0008] It is characterized in that: A spiral slag guiding piece A is welded on the inner wall of the cylinder between the slag inlet and the slag outlet, that is, the outer diameter of the spiral slag guiding piece A is welded on the inner wall of the cylinder, and there is a distance between the inner diameter of the spiral slag guiding piece A and the axial center line of the drum, forming an axial channel. A cut-off block matching the diameter of the channel is arranged in the channel in the middle of the spiral slag guiding piece A, and the cut-off block is fixed on the inner diameter of the spiral slag guiding piece A.
[0009] The said spiral slag guiding piece A is made into a double-wall structure, and a water inlet and a water outlet are provided on the surface in contact with the inner wall of the cylinder, that is, the internal space of the spiral slag guiding piece A is connected to the water jacket of the cylinder.
[0010] In order to better prevent the high-temperature furnace slag and fire in the boiler from passing through the spiral slag guide A of the slag cooler, a high-temperature anti-penetration slag section can be added inside the cylinder in front of the spiral slag guide A. The high-temperature anti-penetration slag section includes a front support plate and a front partition plate. The front support plate is welded to the inner wall of the cylinder behind the slag inlet, and the front support plate contacts the rear end of the slag inlet. The front partition plate is welded to the inner wall of the cylinder in front of the spiral slag guide A. There is a distance between the front support plate and the front partition plate. A number of front slag guide pipes are arranged between the front support plate and the front partition plate, that is, the front and rear ends of each front slag guide pipe are respectively welded to the front support plate and the front partition plate. The front support plate and the front partition plate are provided with openings at positions corresponding to each front slag guide pipe. A spiral slag guide B is welded to the inner wall of each front slag guide pipe, that is, the outer diameter of the spiral slag guide B is welded to the inner wall of the front slag guide pipe. There is a distance between the inner diameter of the spiral slag guide B and the axial center line of the front slag guide pipe, forming an axial channel. A high-temperature cut-off block matching the channel diameter is arranged in the channel in the middle of the spiral slag guide B, and the high-temperature cut-off block is fixed to the inner diameter of the spiral slag guide B. The space between each front slag guide pipe is the front water storage cavity, and the front water storage cavity is communicated with the water jacket. On the side of the front partition plate facing the spiral slag guide A, a number of inclined slag guide plates C are provided. The two ends of the slag guide plate C are respectively welded to the inner wall of the cylinder and the front partition plate.
[0011] A low-temperature anti-penetration slag section can also be added inside the cylinder behind the spiral slag guide A. The low-temperature anti-penetration slag section includes a rear support plate and a rear partition plate. The rear support plate is welded to the inner wall of the cylinder in front of the slag outlet, and the rear partition plate is welded to the inner wall of the cylinder behind the spiral slag guide A. There is a distance between the rear support plate and the rear partition plate. A number of rear slag guide pipes are connected between the rear support plate and the rear partition plate, that is, the front and rear ends of each rear slag guide pipe are respectively welded to the rear partition plate and the rear support plate. The rear support plate and the rear partition plate are provided with openings at positions corresponding to each rear slag guide pipe. A spiral slag guide C is welded to the inner wall of each rear slag guide pipe, that is, the outer diameter of the spiral slag guide C is welded to the inner wall of the rear slag guide pipe. There is a distance between the inner diameter of the spiral slag guide C and the axial center line of the rear slag guide pipe, forming an axial channel. A low-temperature cut-off block matching the channel diameter is arranged in the channel in the middle of the spiral slag guide C, and the low-temperature cut-off block is fixed to the inner diameter of the spiral slag guide C. The space between each rear slag guide pipe is the rear water storage cavity, and the rear water storage cavity is communicated with the water jacket. On the side of the rear partition plate facing the spiral slag guide A, a number of inclined slag guide plates D are provided. The two ends of the slag guide plate D are respectively welded to the inner wall of the cylinder and the rear partition plate.
[0012] The advantages of the present invention are as follows: Since a cut-off block matching the channel diameter is arranged in the channel in the middle of the spiral slag guide A, when there is a leak in the boiler slag discharge, the fire blown into the slag cooler by the positive pressure air in the boiler will be blocked by the cut-off block, so that the conveying slag equipment will not be damaged due to the fire passing through the channel in the middle of the slag cooler, reducing the risk of fire.
[0013] Due to the provision of a high-temperature slag penetration prevention section, a medium-temperature slag penetration prevention section, and a low-temperature slag penetration prevention section, and cutoff blocks are provided in the channels in the middle of the spiral slag guiding vanes in the three slag penetration prevention sections, this can completely block the ejection of high-temperature slag materials and furnace fires, and can completely inhibit the occurrence of fires caused by slag penetration of the slag cooler. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the front view structural schematic diagram of the present invention;
[0015] Figure 2 is Figure 1 the A-A view of
[0016] Figure 3 is Figure 1 the B-B view of
[0017] Figure 4 is the left view structural schematic diagram of the present invention;
[0018] Figure 5 is the front view internal structural schematic diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0019] The following further describes the present invention in conjunction with Figures 1-5 ;
[0020] It includes a base 1, a motor reducer 2 is fixed on the base, a slag discharge pipe 3 is fixed at the front end of the base, a rotary joint 4 is connected to the rear end of the base, two tracks 5 surrounding the cylinder are fixed on the outer wall of the cylinder 8, the base is provided with supporting wheels 6 at positions corresponding to the two tracks, the two tracks on the outer wall of the cylinder are respectively placed on the corresponding supporting wheels of the base, a large sprocket 7 is further provided on the cylinder between the two tracks, the large sprocket is connected to the driving sprocket of the motor reducer through a chain, there is a slag inlet 9 at the front end inside the cylinder, the slag discharge pipe extends into the slag inlet, and several inclined slag guiding plates A 10 are welded on the inner wall of the slag inlet. The cylinder is of a double-wall structure, the space between the double walls of the cylinder is a water jacket, several water inlet pipes 11 and return water pipes 12 connected to the water jacket are fixed outside the cylinder, the other end of the water inlet pipe is connected to the water outlet on the rotary joint, and the other end of the return water pipe is connected to the rotary return water pipe of the rotary joint; a slag outlet 13 is provided at the rear end of the cylinder, and several inclined slag guiding plates B 14 are welded on the inner wall of the slag outlet; the rotary joint is a commercially available product.
[0021] Its characteristics are as follows: A spiral slag guiding piece A15 is welded on the inner wall of the cylinder body between the slag inlet and the slag outlet. That is, the outer diameter of the spiral slag guiding piece A is welded on the inner wall of the cylinder body, and there is a distance between the inner diameter of the spiral slag guiding piece A and the axial center line of the drum, forming an axial channel. A cut-off block 16 matching the diameter of the channel is arranged in the channel in the middle of the spiral slag guiding piece A. The cut-off block is fixed on the inner diameter of the spiral slag guiding piece A. That is, the cut-off block blocks the channel in the middle of the slag guiding piece A to prevent the fire in the boiler from passing through this channel and damaging the slag conveying equipment.
[0022] In order to improve the cooling effect, the spiral slag guiding piece A can be made into a double-wall structure, and a water inlet and a water outlet are arranged on the surface in contact with the inner wall of the cylinder body. That is, the internal space of the spiral slag guiding piece A is communicated with the water jacket of the cylinder body.
[0023] In order to better prevent the high-temperature furnace slag and fire in the boiler from passing through the spiral slag guiding piece A of the slag cooler, a high-temperature anti-penetrating slag section can be added in the cylinder body in front of the spiral slag guiding piece A. The high-temperature anti-penetrating slag section includes a front support plate 17 and a front partition plate 18. The front support plate is welded to the inner wall of the cylinder body behind the slag inlet, and the front support plate contacts the rear end of the slag inlet. The front partition plate is welded to the inner wall of the cylinder body in front of the spiral slag guiding piece A. There is a distance between the front support plate and the front partition plate. A number of front slag guiding pipes 19 are arranged between the front support plate and the front partition plate. That is, the front end and the rear end of each front slag guiding pipe are respectively welded to the front support plate and the front partition plate. Openings are arranged on the front support plate and the front partition plate at the positions corresponding to each front slag guiding pipe. A spiral slag guiding piece B20 is welded on the inner wall of each front slag guiding pipe. That is, the outer diameter of the spiral slag guiding piece B is welded on the inner wall of the front slag guiding pipe, and there is a distance between the inner diameter of the spiral slag guiding piece B and the axial center line of the front slag guiding pipe, forming an axial channel. A high-temperature cut-off block 21 matching the diameter of the channel is arranged in the channel in the middle of the spiral slag guiding piece B. The high-temperature cut-off block is fixed on the inner diameter of the spiral slag guiding piece B. That is, the high-temperature cut-off block blocks this channel. The space between each front slag guiding pipe is the front water storage cavity, and the front water storage cavity is communicated with the water jacket. A number of inclined slag guiding plates C22 are arranged on the surface of the front partition plate facing the spiral slag guiding piece A. The two ends of the slag guiding plate C are respectively welded to the inner wall of the cylinder body and the front partition plate.
[0024] A low-temperature slag penetration prevention section can also be added inside the cylinder body behind the spiral slag guide piece A. The low-temperature slag penetration prevention section includes a rear support plate 23 and a rear partition plate 24. The rear support plate is welded to the inner wall of the cylinder body in front of the slag outlet, and the rear partition plate is welded to the inner wall of the cylinder body behind the spiral slag guide piece A. There is a distance between the rear support plate and the rear partition plate, and several rear slag guide pipes 25 are connected between the rear support plate and the rear partition plate. That is, the front end and the rear end of each rear slag guide pipe are respectively welded to the rear partition plate and the rear support plate. The rear support plate and the rear partition plate are provided with openings at positions corresponding to each rear slag guide pipe. A spiral slag guide piece C26 is welded to the inner wall of each rear slag guide pipe. That is, the outer diameter of the spiral slag guide piece C is welded to the inner wall of the rear slag guide pipe, and there is a distance between the inner diameter of the spiral slag guide piece C and the axial center line of the rear slag guide pipe, forming an axial channel. A low-temperature cut-off block 27 matching the diameter of the channel is arranged in the channel in the middle of the spiral slag guide piece C. The low-temperature cut-off block is fixed to the inner diameter of the spiral slag guide piece C. That is, the low-temperature cut-off block blocks the channel. The space between each rear slag guide pipe is a rear water storage cavity, and the rear water storage cavity is communicated with the water jacket. On the side of the rear partition plate facing the spiral slag guide piece A, several inclined slag guide plates D28 are provided. The two ends of the slag guide plate D are respectively welded to the inner wall of the cylinder body and the rear partition plate.
[0025] The slag enters the high-temperature slag penetration prevention section and quickly decomposes into each front slag guide pipe for cooling. The high-temperature cut-off block arranged in each front slag guide pipe can prevent the fire of the boiler from entering the front slag guide pipe and piercing out from the front slag guide pipe.
[0026] Since the high-temperature slag in the front slag guide pipe of the high-temperature slag penetration prevention section needs to be rapidly cooled and concentrated into the middle-temperature section located between the high-temperature slag penetration prevention section and the low-temperature slag penetration prevention section for centralized cooling, the spiral slag guide piece A in the middle-temperature section is a double-layer structure, and the water inside can quickly cool the slag. The arranged cut-off block can prevent the slag and fire from piercing out from the middle of the spiral slag guide piece A.
[0027] The slag in the middle-temperature section still needs to be continuously cooled and decomposed quickly into the rear slag guide pipe of the low-temperature slag penetration prevention section, and then is output from the slag outlet. The low-temperature cut-off block arranged in the rear slag guide pipe of the low-temperature slag penetration prevention section further prevents the slag and fire from piercing out of the device.
[0028] The above is only the preferred embodiment of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.
Claims
1. An anti-slag penetration cooling machine comprises a base (1), a motor reducer (2) fixed on the base, a slag lowering pipe (3) fixed on the front end of the base, a rotary joint (4) connected to the rear end of the base, two tracks (5) surrounding the cylinder (8) fixed on the outer wall of the cylinder, the base is provided with supporting wheels (6) at positions corresponding to the two tracks, the two tracks on the outer wall of the cylinder are respectively placed on the supporting wheels corresponding to the base, a large sprocket (7) is also provided on the cylinder between the two tracks, the large sprocket is connected to the driving sprocket of the motor reducer through a chain, a slag inlet (9) is provided at the front end of the cylinder, the slag lowering pipe extends into the slag inlet, the cylinder is a double-wall structure, the space between the double walls of the cylinder is a water jacket, a plurality of water inlet pipes (11) and water return pipes (12) connected to the water jacket are fixed on the outside of the cylinder, the other end of the water inlet pipe is connected to the water outlet on the rotary joint, and the other end of the water return pipe is connected to the rotating water return pipe of the rotary joint; a slag outlet (13) is provided at the rear end of the cylinder; Its characteristics are: A spiral slag guide piece A (15) is welded on the inner wall of the cylinder between the slag inlet and the slag outlet, that is, the outer diameter of the spiral slag guide piece A is welded on the inner wall of the cylinder, and there is a distance between the inner diameter of the spiral slag guide piece A and the axial center line of the drum, forming an axial channel. A cut-off block (16) matching the channel diameter is provided in the channel in the middle of the spiral slag guide piece A, and the cut-off block is fixed on the inner diameter of the spiral slag guide piece A.
2. The anti-slag cooling machine according to claim 1 is characterized in that: The spiral slag guide piece A is a double-wall structure, and a water inlet and a water outlet are arranged on the surface contacting the inner wall of the cylinder, that is, the inner space of the spiral slag guide piece A is connected with the water jacket of the cylinder.
3. The anti-slag cooling machine according to claim 1 or 2, characterized in that: A plurality of inclined slag guide plates A (10) are welded on the inner wall of the slag inlet, and a plurality of inclined slag guide plates B (14) are welded on the inner wall of the slag outlet.
4. The anti-slag cooling machine according to claim 1 or 2, characterized in that: A high-temperature anti-slag penetration section is added to the cylinder in front of the spiral slag guide plate A, and the high-temperature anti-slag penetration section includes a front support plate (17) and a front baffle (18). The front support plate is welded to the inner wall of the cylinder behind the slag inlet, and the front support plate is in contact with the rear end of the slag inlet. The front baffle is welded to the inner wall of the cylinder in front of the spiral slag guide plate A, and a distance is left between the front support plate and the front baffle. A plurality of front slag guide pipes (19) are arranged between the front support plate and the front baffle, that is, the front end and the rear end of each front slag guide pipe are respectively welded to the front support plate and the front baffle. The partition plate, the front support plate and the front partition plate are provided with openings at positions corresponding to the leading slag pipes. A spiral slag guide plate B (20) is welded on the inner wall of each leading slag pipe, that is, the outer diameter of the spiral slag guide plate B is welded on the inner wall of the leading slag pipe, and there is a distance between the inner diameter of the spiral slag guide plate B and the axial center line of the leading slag pipe, forming an axial channel. A high-temperature cut-off block (21) matching the channel diameter is provided in the channel in the middle of the spiral slag guide plate B, and the high-temperature cut-off block is fixed on the inner diameter of the spiral slag guide plate B.
5. The anti-slag cooling machine according to claim 4 is characterized in that: The space between the leading slag pipes is a front water storage chamber, and the front water storage chamber is communicated with the water jacket.
6. The anti-slag cooling machine according to claim 4 is characterized in that: A plurality of inclined slag guide plates C (22) are provided on the side of the front baffle plate facing the spiral slag guide plate A, and the two ends of the slag guide plates C are respectively welded to the inner wall of the cylinder and the front baffle plate.
7. The anti-slag cooling machine according to claim 1 or 2, characterized in that: A low-temperature anti-slag penetration section is added in the cylinder behind the spiral slag guide plate A, and the low-temperature anti-slag penetration section includes a rear support plate (23) and a rear partition plate (24). The rear support plate is welded to the inner wall of the cylinder in front of the slag outlet, and the rear partition plate is welded to the inner wall of the cylinder behind the spiral slag guide plate A. A distance is left between the rear support plate and the rear partition plate. A plurality of rear slag guide pipes (25) are connected between the rear support plate and the rear partition plate, that is, the front end and the rear end of each rear slag guide pipe are respectively welded to the rear partition plate and the rear support plate, and the rear support plate and the rear partition plate are at the corresponding positions of each rear slag guide pipe. An opening is provided at the position, and a spiral slag guide piece C (26) is welded on the inner wall of each rear slag guide pipe, that is, the outer diameter of the spiral slag guide piece C is welded on the inner wall of the rear slag guide pipe, and there is a distance between the inner diameter of the spiral slag guide piece C and the axial center line of the rear slag guide pipe, forming an axial channel, and a low-temperature cut-off block (27) matching the channel diameter is provided in the channel in the middle of the spiral slag guide piece C, and the low-temperature cut-off block is fixed on the inner diameter of the spiral slag guide piece C. The space between each rear slag guide pipe is a rear water storage chamber, and the rear water storage chamber is connected to the water jacket.
8. The anti-slag cooling machine according to claim 7 is characterized in that: A plurality of inclined slag guide plates D (28) are provided on the side of the rear baffle plate facing the spiral slag guide plate A, and the two ends of the slag guide plates D are respectively welded to the inner wall of the cylinder and the rear baffle plate.
9. The anti-slag cooling machine according to claim 4 is characterized in that: A low-temperature anti-slag penetration section is added in the cylinder behind the spiral slag guide plate A, and the low-temperature anti-slag penetration section includes a rear support plate (23) and a rear partition plate (24). The rear support plate is welded to the inner wall of the cylinder in front of the slag outlet, and the rear partition plate is welded to the inner wall of the cylinder behind the spiral slag guide plate A. A distance is left between the rear support plate and the rear partition plate. A plurality of rear slag guide pipes (25) are connected between the rear support plate and the rear partition plate, that is, the front end and the rear end of each rear slag guide pipe are respectively welded to the rear partition plate and the rear support plate, and the rear support plate and the rear partition plate are at the corresponding positions of each rear slag guide pipe. An opening is provided at the position, and a spiral slag guide piece C (26) is welded on the inner wall of each rear slag guide pipe, that is, the outer diameter of the spiral slag guide piece C is welded on the inner wall of the rear slag guide pipe, and there is a distance between the inner diameter of the spiral slag guide piece C and the axial center line of the rear slag guide pipe, forming an axial channel, and a low-temperature cut-off block (27) matching the channel diameter is provided in the channel in the middle of the spiral slag guide piece C, and the low-temperature cut-off block is fixed on the inner diameter of the spiral slag guide piece C. The space between each rear slag guide pipe is a rear water storage chamber, and the rear water storage chamber is connected to the water jacket.