Multi-tube slag cooler capable of preventing slag penetration

Abstract

The utility model relates to the field of slag coolers, in particular to a slag penetration prevention multi-tube slag cooler which is mainly designed for solving the problem that at present, high-temperature slag and fire penetrate out of a channel in the middle of a spiral slag guide sheet of each slag discharge tube after entering the slag cooler. The device comprises a base, a track of a roller is arranged on a riding wheel of the base, and a large chain wheel on the roller is connected with a chain wheel of a motor through a chain; a plurality of slag guiding pipes are arranged in the roller between the front supporting plate and the rear supporting plate, spiral slag guiding pieces are arranged on the inner walls of the slag guiding pipes, openings are formed in the positions, corresponding to the slag guiding pipes, of the front supporting plate and the rear supporting plate, a slag inlet and a slag outlet are formed in the roller, the slag discharging pipe extends into the slag inlet, and the space between the roller and the slag inlet and the space between the slag guiding pipes and the roller are water storage cavities. The water inlet pipe and the water return pipe are communicated with the water storage cavity; the water inlet pipe and the water return pipe are connected with the rotary joint. And a stop block is fixed in a channel in the middle of the spiral slag guide sheet of each slag guide pipe and is fixed on the inner diameter of the spiral slag guide sheet. The device has the advantage that fire disasters caused by slag penetration of the slag cooler can be inhibited.

Description

Technical Field

[0001] This utility model relates to the field of slag coolers, specifically to a multi-tube slag cooler that prevents slag penetration. Background Technology

[0002] The multi-tube slag cooler is a device for cooling high-temperature slag. It includes a base, a motor reducer fixed on the base, two tracks fixed on the outer wall of the cylinder surrounding the cylinder, the tracks resting on the base's support rollers, and a large sprocket on the outer wall of the cylinder. The large sprocket is connected to the drive sprocket of the motor reducer via a chain. The front end of the cylinder has a slag inlet connected to the slag discharge pipe, and the rear end of the cylinder has a slag outlet. Multiple slag discharge pipes with spiral guide plates are located inside the cylinder between the inlet and outlet pipes. The space between the slag discharge pipes inside the cylinder is a water storage chamber containing cooling water. Several water inlet pipes and water return pipes connected to the water storage chamber are located outside the cylinder. The water inlet pipes are connected to the outlet on the rotary joint at the rear end of the cylinder, and the water return pipes are connected to the rotary return pipe of the rotary joint. The motor reducer drives the cylinder to rotate, thereby driving the slag forward in the slag discharge pipes while the slag is cooled by the cooling water. Then the slag is discharged from the outlet pipe.

[0003] The existing multi-tube slag cooler has a spiral guide plate welded on the inner wall of the slag discharge pipe. That is, the outer diameter of the spiral guide plate is welded to the inner wall of the slag discharge pipe, and there is a distance between the inner diameter of the spiral guide plate and the axial center line of the slag discharge pipe. In this way, an axial channel is formed in the middle of the slag discharge pipe (i.e. the middle of the spiral guide plate).

[0004] When a leak occurs in the boiler slag discharge system, the boiler's flame can be blown into the slag cooler by the boiler's positive pressure air. The high-temperature slag (around 1000℃) and flame, entering the slag cooler, pass through the channels between the spiral guide plates of each slag discharge pipe, damaging the slag conveying equipment located downstream of the multi-tube slag cooler. If the conveying equipment is a belt conveyor, it can cause the belt to catch fire and burn. If the conveying equipment is a scraper conveyor or chain bucket conveyor, the high-temperature flame can deform the equipment or even render it unusable. This poses a very high risk and greatly increases the possibility of a fire on site. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a multi-tube slag cooler that prevents high-temperature slag and fire from penetrating the slag cooler when there is a leak in the slag discharge.

[0006] The purpose of this utility model is achieved as follows: it includes a base, a motor reducer fixed on the base, a slag discharge pipe fixed at the front end of the base, a rotary joint at the rear end of the base, two tracks surrounding the drum fixed on the outer wall of the drum, a support roller provided at the position corresponding to the two tracks on the base, the two tracks on the outer wall of the drum respectively placed on the support rollers corresponding to the base, and a large sprocket provided on the drum between the two tracks, the large sprocket being connected to the drive sprocket of the motor reducer through a chain;

[0007] A rear support plate is fixed at the rear of the drum, and a front support plate is fixed at the front of the drum. Several slag guide pipes are installed inside the drum between the front and rear support plates. A spiral slag guide plate is fixed to the inner wall of each slag guide pipe. The front and rear ends of each slag guide pipe are fixed to the front and rear support plates, respectively. The front and rear support plates have openings at the positions corresponding to each slag guide pipe. A slag inlet is located inside the drum in front of the front support plate, and its rear end is fixed to the front support plate. The slag discharge pipe extends into the slag inlet. The space between the drum and the slag inlet, as well as the space between each slag guide pipe and the drum, are connected to form a water storage chamber. Several water inlet pipes and water return pipes connected to the water storage chamber are located outside the drum. A slag outlet is located inside the drum behind the rear support plate. The water inlet pipe is connected to the water outlet on the rotary joint, and the water return pipe is connected to the rotary return pipe of the rotary joint. Several inclined guide plates are welded on the inner wall of the slag inlet, and several inclined guide plates are also welded on the inner wall of the slag outlet.

[0008] The outer diameter of the spiral guide plate is welded to the inner wall of the guide pipe. There is a distance between the inner diameter of the spiral guide plate and the axial centerline of the guide pipe, forming an axial channel.

[0009] Its characteristic is that a stop block matching the channel diameter is provided in the channel in the middle of the spiral slag guide plate of each slag guide pipe, and the stop block is fixed on the inner diameter of the spiral slag guide plate.

[0010] Each slag guide pipe contains multiple stop blocks arranged in a front-to-back pattern, all fixed to the inner diameter of the spiral slag guide plate. Fixing the stop blocks in the channel in the middle of the spiral slag guide plate blocks the channel, preventing high-temperature slag and fire from entering and exiting the slag guide pipe.

[0011] The advantages of this invention are: because a stop block matching the diameter of the channel is installed in the middle of the spiral slag guide plate, when there is a gap in the boiler slag discharge, the fire blown into the slag guide pipe of the slag cooler by the positive pressure air of the boiler will be blocked by the stop block, which can completely block the high-temperature slag and furnace fire from being ejected. This will prevent the slag conveying equipment from being damaged by the fire passing through the middle channel of the slag cooler, and can suppress the occurrence of fire caused by slag penetration of the slag cooler. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 yes Figure 1 AA view;

[0014] Figure 3 This is the left view of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of this utility model. Detailed Implementation

[0016] The following is combined Figure 1-4 The present invention will be further described below;

[0017] It includes a base 1, a motor reducer 2 fixed on the base, a slag discharge pipe 3 fixed at the front end of the base, a rotary joint 4 at the rear end of the base, two tracks 5 fixed on the outer wall of the drum 18, a support roller 6 at the position corresponding to the two tracks on the base, the two tracks on the outer wall of the drum respectively placed on the corresponding support rollers on the base, and a large sprocket 7 on the drum between the two tracks. The large sprocket is connected to the drive sprocket of the motor reducer through a chain. The rotary joint is a commercially available product.

[0018] A rear support plate 8 is fixed at the rear of the drum, and a front support plate 9 is fixed at the front of the drum. Several slag guide pipes 10 are arranged inside the drum between the front and rear support plates. A spiral slag guide plate 11 is fixed to the inner wall of each slag guide pipe. The front and rear ends of each slag guide pipe are fixed to the front and rear support plates, respectively. The front and rear support plates have openings at the positions corresponding to each slag guide pipe. A slag inlet 12 is located inside the drum in front of the front support plate, and its rear end is fixed to the front support plate. The slag discharge pipe extends into the slag inlet. The space between the drum and the slag inlet, as well as the space between each slag guide pipe and the drum, are connected to form a water storage chamber. Several water inlet pipes 13 and water return pipes 14 connected to the water storage chamber are located outside the drum. A slag outlet 15 is located inside the drum behind the rear support plate. The water inlet pipe is connected to the water outlet on the rotary joint, and the water return pipe is connected to the rotary return pipe of the rotary joint. Several inclined guide plates 16 are welded on the inner wall of the slag inlet, and several inclined guide plates 16 are also welded on the inner wall of the slag outlet.

[0019] The outer diameter of the spiral guide plate is welded to the inner wall of the guide pipe. There is a distance between the inner diameter of the spiral guide plate and the axial centerline of the guide pipe, forming an axial channel.

[0020] Its characteristic is that a stop block 17 matching the channel diameter is provided in the channel in the middle of the spiral slag guide plate of each slag guide pipe, and the stop block is fixed on the inner diameter of the spiral slag guide plate.

[0021] Each slag guide pipe contains multiple stop blocks arranged in a front-to-back pattern, all fixed to the inner diameter of the spiral slag guide plate. Fixing the stop blocks in the channel in the middle of the spiral slag guide plate blocks the channel, preventing high-temperature slag and fire from entering and exiting the slag guide pipe.

[0022] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-tube slag cooler with anti-slag penetration, including a base (1), a motor reducer (2) fixed on the base, a slag pipe (3) fixed at the front end of the base, a rotary joint (4) at the rear end of the base, two tracks (5) fixed on the outer wall of the drum (18), a support roller (6) provided at the position of the corresponding two tracks on the base, the two tracks on the outer wall of the drum are respectively placed on the support rollers corresponding to the base, and a large sprocket (7) is fixed on the drum between the two tracks. The large sprocket is connected to the drive sprocket of the motor reducer through a chain. A rear support plate (8) is fixed at the rear of the drum, and a front support plate (9) is fixed at the front of the drum. Several slag guide pipes (10) are provided in the drum between the front support plate and the rear support plate. A spiral slag guide plate (11) is fixed on the inner wall of each slag guide pipe. The front and rear ends of each slag guide pipe are fixed on the front support plate and the rear support plate respectively. The front support plate and the rear support plate are provided with openings at the positions corresponding to each slag guide pipe. A slag inlet (12) is provided in the drum in front of the front support plate. The rear end of the slag inlet is fixed on the front support plate. The slag outlet pipe extends into the slag inlet. The space between the drum and the slag inlet and the space between each slag guide pipe and the drum are connected to form a water storage chamber. Several water inlet pipes (13) and water return pipes (14) connected to the water storage chamber are provided outside the drum. A slag outlet (15) is provided in the drum behind the rear support plate. The water inlet pipe is connected to the water outlet on the rotary joint, and the water return pipe is connected to the rotary return pipe of the rotary joint. The outer diameter of the spiral guide plate is welded to the inner wall of the guide pipe. There is a distance between the inner diameter of the spiral guide plate and the axial center line of the guide pipe, forming an axial channel. Its characteristics are: A stop block (17) matching the channel diameter is provided in the channel of the spiral guide plate in each guide pipe. The stop block is fixed on the inner diameter of the spiral guide plate.

2. The anti-slag-penetration multi-tube slag cooler according to claim 1, characterized in that: There are multiple stop blocks arranged in a front-to-back pattern inside each slag guide pipe, and all of these stop blocks are fixed on the inner diameter of the spiral slag guide plate.

3. The anti-slag-penetration multi-tube slag cooler according to claim 1 or 2, characterized in that: Several inclined guide plates (16) are welded on the inner wall of the slag inlet, and several inclined guide plates (16) are also welded on the inner wall of the slag outlet.

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