A device for preventing clogging of a slag separator

Abstract

The utility model discloses a device for preventing slag machine from blocking, including slag machine shell, slag inner chamber, and the inside lateral wall of slag inner chamber is equipped with water inlet pipe and water outlet pipe, drive component includes motor, speed reducer, rotating shaft, and the broken component includes broken drill bit, single taper auger, slag discharge channel, electric ball valve, whole structure operation is simple and reliable, and the broken of residual slag is realized through the cooperation of broken drill bit and the single taper auger of setting, and the anti -blocking function of promotion, for preventing the system of the large amount of slag in waste water from blocking, continuously discharging slag mode is often used, and the anti -blocking function of the device is reliable, furthermore, the electric ball valve is set in its drainage, can make continuous slag into intermittent slag, effectively improves the system operation efficiency, increases the heat exchange efficiency, and the economic benefit is in the increase.

Description

Technical Field

[0001] This utility model relates to the fields of heating, wastewater treatment, and industrial wastewater waste heat recovery devices, and in particular to a device for preventing clogging of a slag removal machine. Background Technology

[0002] Industrial waste heat recovery is a key development direction for energy conservation, emission reduction, sustainable development, and achieving the "dual carbon" goals. Taking blast furnace slag flushing as an example, the wastewater from blast furnace slag flushing contains a large amount of waste heat. In actual waste heat recovery processes, the flushing water needs to be deslag-removed before entering the plate heat exchanger for waste heat recovery. However, in actual operation, due to the large amount of slag in the flushing water and different slag pool treatment processes, especially the "Indo-Pakistani method" and "Jiaheng method," which are relatively harsh, slag removal machine blockage frequently occurs during waste heat recovery. The slag removal machine operates 24 hours a day, causing the heat exchange system to be in a state of continuous pressure loss. During the slag removal process, a large amount of wastewater waste heat is carried away, affecting the system's waste heat recovery efficiency.

[0003] Previously, the slag remover was judged for blockage based on the pressure difference between the inlet and outlet pressure gauges. In actual application, it was often found that when a pressure difference existed, the slag remover was already completely blocked, causing system shutdown and maintenance, and the pressure gauge probes suffered severe wear from being exposed to slag and water. Therefore, using the pressure difference before and after the slag remover to determine if it was blocked was already a case of "locking the stable door after the horse has bolted."

[0004] While the continuous slag removal process using a slag remover alleviates some of the clogging issues, the clogging frequency remains high, and it causes severe wear on the slag removal pipes and their control valves. In actual use, leaks in valves and pipes occur approximately every 7 days due to wear. Unresolved clogging leads to new wear problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device for preventing clogging in a slag remover, in order to solve the problem that in practical applications, the slag remover is often completely blocked when there is a pressure difference, causing the system to be shut down for maintenance.

[0006] The technical solution of this utility model is: a device for preventing clogging of a slag remover, including a slag remover housing, a slag remover inner cavity formed on the inner side of the slag remover housing, and an inlet pipe and an outlet pipe provided on the inner side wall of the slag remover inner cavity;

[0007] The drive assembly includes a motor, a reducer, and a rotating shaft. The motor and the reducer are connected to each other and are disposed on the upper side of the slag remover housing. The lower end of the rotating shaft passes through the slag remover housing and is located inside the slag remover cavity, while the upper end is connected to the motor.

[0008] The crushing assembly includes a crushing drill bit and a single-cone auger drill. The single-cone auger drill is located inside the slag removal cavity and connected to the lower end of the rotating shaft. The crushing drill bit is disposed at the lower end of the single-cone auger drill.

[0009] The slag discharge channel is located at the lower end of the slag remover housing and below the crushing drill bit. An electric ball valve is connected to the slag discharge channel away from the slag remover housing.

[0010] Furthermore, a filter bucket is fixedly installed on the inner top wall of the slag removal cavity and above the water inlet pipe. The filter bucket forms a filter chamber that communicates with the slag removal cavity. The rotating shaft passes through the inner bottom wall of the filter chamber, and the water outlet pipe is connected to the filter chamber.

[0011] Furthermore, multiple sets of brushes are provided on the rotating shaft and located inside the filter chamber.

[0012] Furthermore, the bottom wall of the inner side of the filter chamber is provided with multiple sets of overflow holes that run vertically through the filter.

[0013] Furthermore, the inner sidewall of the slag removal cavity is provided with a reinforcing plate located on the lower end face of the filter barrel.

[0014] Furthermore, a limiting block is provided on the rotating shaft and located on the lower side of the reinforcing plate.

[0015] Furthermore, the inner sidewall of the slag removal cavity is provided with a reinforcing ring located below the reinforcing plate, and a reinforcing rod is provided between the reinforcing ring and the limiting block.

[0016] Furthermore, the cross-sectional area of ​​the spiral blades formed on the single-cone auger gradually increases from bottom to top.

[0017] Furthermore, the slag discharge port formed on the inner bottom wall of the slag removal cavity is connected to the slag discharge port, and the distance between the crushing drill bit and the inner bottom wall of the slag discharge port is smaller than the opening diameter of the slag discharge channel.

[0018] Furthermore, the upper end face of the slag remover housing is provided with a support rod, the upper end face of the support rod is provided with a support base plate, and the motor and the reducer are placed on the support base plate.

[0019] The advantages of this utility model compared with the prior art are as follows: the overall structure is simple and reliable to operate. The crushing of residue is achieved by the crushing drill bit and the set single cone auger, which improves the anti-clogging function. For systems with a large amount of slag in wastewater, continuous slag discharge is often used to prevent clogging. The anti-clogging function of this device is reliable. Furthermore, the electric ball valve installed at its drainage channel can change the continuous slag discharge to intermittent slag discharge, which effectively improves the system operating efficiency, increases the heat exchange efficiency, and significantly increases the economic benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 3 for Figure 2 Sectional view along the middle section "AA";

[0023] Figure 4 This is a half-sectional view of the outer casing of the slag removal machine of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] See Figure 1-4This utility model discloses a device for preventing clogging in a slag remover, comprising a slag remover housing 1, with a slag removal cavity 10 formed on the inner side of the housing, and an inlet pipe 3 and an outlet pipe 4 provided on the inner side wall of the cavity 10; and a drive assembly including a motor 8, a reducer 7, and a rotating shaft 15. The motor 8 and the reducer 7 are connected and disposed on the upper side of the slag remover housing 1, and the lower end of the rotating shaft 15 passes through the slag remover housing 1 and is located within the slag removal cavity 10. The upper end of the device is connected to the motor 8; the crushing assembly includes the crushing drill bit 11 and a single-cone auger drill 12. The single-cone auger drill 12 is located inside the slag removal cavity 10 and connected to the lower end of the rotating shaft 15. The crushing drill bit 11 is located at the lower end of the single-cone auger drill 12. The slag discharge channel 90 is located at the lower end of the slag removal machine housing 1 and below the crushing drill bit 11. The slag discharge channel 90 is connected to an electric ball valve 9 away from the slag removal machine housing 1. In use, wastewater containing residue is pumped to a certain water pressure and enters the slag removal cavity 10 inside the slag removal machine housing 1 through the inlet pipe 3. At this time, the motor 8 and the reducer 7 start working, driving the rotating shaft to rotate, which in turn drives the crushing drill bit 11 at the lower end to start rotating, crushing the larger residues that have settled on the bottom wall of the slag removal cavity 10. The crushing drill bit 11 can be made of hard alloy. The lower part of the single-cone auger 12 is used to agitate the waste residue, preventing it from settling and becoming dense, which could cause blockages during automatic intermittent slag discharge and prevent discharge. The cross-sectional area of ​​the spiral blades formed on the single-cone auger 12 gradually increases from bottom to top, with the uppermost blades being larger. These blades are primarily used to detect whether the slag volume has reached a certain height. The large spiral blades require a large torque to rotate, and this increased torque is transmitted to the motor through the rotating shaft, causing an increase in motor current. Once the current reaches a certain value, a sensor feeds back a signal to the control system located in the reducer. The reducer then adjusts the motor's output power. The control system receives the increased current signal continuously for 5 seconds and issues a command to open the electric valve at the slag discharge port. After the waste residue in the slag removal chamber is discharged, the torque of the single-cone auger rotating shaft recovers, and the motor current recovers. Feedback is then sent to the control system, which closes the slag discharge port valve after 10 seconds. This ensures that the system operates from a continuous pressure loss state to intermittent pressure loss operation, improving system efficiency. The crushed residue is discharged from the outer casing 1 of the slag remover through the slag discharge channel 90, along with water. A further electric ball valve 9 is installed in the slag discharge channel 90 to achieve timed slag discharge. After the slag is discharged from the casing, the valve closes, ensuring that the crushed residue and wastewater are discharged through the outlet before the slag is discharged through the electric ball valve 9 in the slag discharge channel 90, allowing sufficient time for residue crushing and wastewater discharge.

[0028] For details, please refer to Figure 3-4To further reduce the residue content of the wastewater discharged from the outlet, a filter bucket 17 is fixedly installed on the inner top wall of the slag removal cavity 10 and above the inlet pipe 3. The filter bucket 17 forms a filter chamber 170 communicating with the slag removal cavity 10. The bottom wall of the filter chamber 170 has multiple sets of vertically penetrating overflow holes 107, and the rotating shaft 15 passes through the bottom wall of the filter chamber 170. The outlet pipe 4 is interconnected with the filter chamber 170. The filter bucket can be directly welded to the inner top wall of the slag removal cavity 10, positioning it above the inlet pipe. This ensures that the wastewater with residue is initially located below the filter bucket 17, where the residue sinks to the lower inner wall of the slag removal cavity 10 due to gravity. The wastewater from the upper side then enters the filter bucket 17 again through the overflow holes 107 for filtration before being discharged through the outlet.

[0029] For details, please refer to Figure 3-4 To prevent residue from adhering to the inner side of the filter chamber, multiple sets of brushes 18 are provided on the rotating shaft 15 and located inside the filter chamber 170. During operation, the rotating shaft 15 drives the brushes 18 to rotate continuously, achieving the purpose of washing and cleaning the inner side of the filter chamber 170.

[0030] Specifically, the inner side wall of the slag removal cavity 10 is provided with a reinforcing plate 16 located on the lower end face of the filter barrel 17. The reinforcing plate 16 is provided on the inner side wall of the slag removal cavity 10 as a load-bearing plate for the filter barrel 17 to ensure its stability in use.

[0031] Specifically, a limiting block 14 is provided on the rotating shaft 15 and below the reinforcing plate 16. A reinforcing ring 130 is provided on the inner side wall of the slag removal cavity 10 and below the reinforcing plate 16. A reinforcing rod 13 is provided between the reinforcing ring 130 and the limiting block 14. The limiting block 14 adds a certain amount of gravity to the rotating shaft to prevent displacement during rotation, and the reinforcing rod 13 further limits the rotation.

[0032] Specifically, the slag discharge port 110 is formed on the inner bottom wall of the slag removal cavity 10, and the slag discharge channel 90 is disposed in the slag discharge port 110 for connection. The distance between the crushing drill bit 11 and the inner bottom wall of the slag discharge port 110 is smaller than the opening diameter of the slag discharge channel 90. The opening diameter of the slag discharge channel 90 is larger, which facilitates the accumulation of large residues. The distance between the crushing drill bit 11 and the slag discharge port 110 is smaller, which facilitates the crushing effect of the crushing drill bit. Overall, the difference between the two is that the opening diameter of the slag discharge channel 90 is twice the distance between the crushing drill bit 11 and the slag discharge port 110.

[0033] Specifically, the upper end face of the slag removal machine housing 1 is provided with a support rod 5, the upper end face of the support rod 5 is provided with a support base plate 6, and the motor 8 and the reducer 7 are placed on the support base plate 6.

[0034] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A device for preventing clogging of a slag remover, comprising a slag remover housing (1), wherein a slag remover cavity (10) is formed on the inner side of the slag remover housing, and an inlet pipe (3) and an outlet pipe (4) are provided on the inner sidewall of the slag remover cavity (10), characterized in that: The drive assembly includes a motor (8), a reducer (7), and a rotating shaft (15). The motor (8) and the reducer (7) are connected to each other and are disposed on the upper side of the slag remover housing (1). The lower end of the rotating shaft (15) passes through the slag remover housing (1) and is located inside the slag remover cavity (10). The upper end is connected to the motor (8). The crushing assembly includes a crushing drill bit (11) and a single-cone spiral drill (12). The single-cone spiral drill (12) is located inside the slag removal cavity (10) and connected to the lower end of the rotating shaft (15). The crushing drill bit (11) is located at the lower end of the single-cone spiral drill (12). The slag discharge channel (90) is located at the lower end of the shell (1) of the slag remover and below the crushing drill bit (11). The slag discharge channel (90) is connected to an electric ball valve (9) away from the shell (1) of the slag remover.

2. The device for preventing clogging in a slag remover according to claim 1, characterized in that, A filter bucket (17) is fixedly installed on the inner top wall of the slag removal cavity (10) and above the water inlet pipe (3). A filter chamber (170) is formed inside the filter bucket (17) and communicates with the slag removal cavity (10). The rotating shaft (15) passes through the inner bottom wall of the filter chamber (170). The water outlet pipe (4) is connected to the filter chamber (170).

3. The device for preventing clogging in a slag remover according to claim 2, characterized in that, Multiple sets of brushes (18) are provided on the rotating shaft (15) and inside the filter chamber (170).

4. The device for preventing clogging in a slag remover according to claim 3, characterized in that, The bottom wall of the filter chamber (170) is provided with multiple sets of overflow holes (107) that run vertically through it.

5. The device for preventing clogging in a slag remover according to claim 4, characterized in that, The inner side wall of the slag removal cavity (10) is provided with a reinforcing plate (16) located on the lower end face of the filter barrel (17).

6. The device for preventing clogging in a slag remover according to claim 5, characterized in that, A limiting block (14) is provided on the rotating shaft (15) and located on the lower side of the reinforcing plate (16).

7. The device for preventing clogging in a slag remover according to claim 6, characterized in that, The inner side wall of the slag removal cavity (10) is provided with a reinforcing ring (130) located below the reinforcing plate (16), and a reinforcing rod (13) is provided between the reinforcing ring (130) and the limiting block (14).

8. The device for preventing clogging in a slag remover according to claim 7, characterized in that, The cross-sectional area of ​​the spiral blades formed on the single-cone spiral drill (12) gradually increases from bottom to top.

9. A device for preventing clogging in a slag remover according to claim 8, characterized in that, The slag discharge port (110) is formed on the inner bottom wall of the slag removal cavity (10), and the slag discharge channel (90) is provided in the slag discharge port (110) for connection. The distance between the crushing drill bit (11) and the inner bottom wall of the slag discharge port (110) is smaller than the opening diameter of the slag discharge channel (90).

10. A device for preventing clogging in a slag remover according to claim 9, characterized in that, The outer shell (1) of the slag remover is provided with a support rod (5) on the upper end face, and the upper end face of the support rod (5) is provided with a support base plate (6). The motor (8) and the reducer (7) are placed on the support base plate (6).

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