Self-flow prevention equipment for slag cooler

Abstract

The utility model relates to the technical field of circulating fluidized bed boilers, in particular to a slag cooler self-flowing prevention device which comprises a device body, a feeding cavity is formed in the device body, a feeding port communicated with the feeding cavity is formed in the upper end of the device body, and a discharging port communicated with the feeding cavity is formed in the lower end of the device body. A rotating hole communicated with the feeding cavity is formed in the side face of the equipment body, a feeding shaft is rotationally arranged in the rotating hole, one end of the feeding shaft penetrates into the feeding cavity, a plurality of conveying paddles are arranged on the outer wall, arranged in the feeding cavity, of the feeding shaft in a surrounding mode, and the other end of the feeding shaft is arranged outside the equipment body. And a motor for driving the feeding shaft to rotate is connected. The problems that in the prior art, in the using process of a roller slag cooler, the self-flowing problem occurs frequently, normal operation of equipment is affected, the maintenance cost is greatly increased, and the production safety and stability are seriously threatened are solved.

Description

Technical Field

[0001] This utility model relates to the field of circulating fluidized bed boiler technology, specifically to a slag cooler anti-self-flow device. Background Technology

[0002] In circulating fluidized bed boiler power plants, the drum slag cooler, as a key supporting equipment, undertakes the important task of cooling and conveying slag. However, due to coal type issues, the drum slag cooler frequently experiences slag overflow and gravity flow problems, which not only affect the normal operation of the equipment and lead to a significant increase in maintenance costs, but also pose a serious threat to the safety and stability of production. Against this backdrop, the research and application of a slag overflow prevention and quantitative feeding system for the slag cooler is of extremely important practical significance for improving enterprise production efficiency, reducing operating costs, and ensuring production safety. Utility Model Content

[0003] The purpose of this utility model is to provide a device to prevent self-flow in a slag cooler, which solves the problem that in the prior art, self-flow occurs frequently during the use of a drum slag cooler, which not only affects the normal operation of the equipment and leads to a significant increase in maintenance costs, but also poses a serious threat to the safety and stability of production.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A self-flow prevention device for a slag cooler includes a main body with a feeding chamber inside. The upper end of the main body has an inlet connected to the feeding chamber, and the lower end has an outlet connected to the feeding chamber. A rotating hole connected to the feeding chamber is provided on the side of the main body. A feeding shaft is rotatably installed in the rotating hole. One end of the feeding shaft passes into the feeding chamber. Several conveying blades are arranged around the outer wall of the feeding chamber. The other end of the feeding shaft is located outside the main body and is connected to a motor for driving the feeding shaft to rotate.

[0006] A further technical solution is that a first sprocket is fitted on the outer wall of the main body of the equipment, and a second sprocket is installed on the output shaft of the motor. The first sprocket and the second sprocket are connected by chain drive.

[0007] A further technical solution is that the first sprocket, the second sprocket, and the chain are equipped with protective shells, and the outer wall of the main body of the equipment is equipped with a motor support, with the motor fixed to the motor support.

[0008] A further technical solution is that the feeding shaft is placed on the outer wall of the equipment body and a support ring is rotatably fitted thereon. The outer wall of the support ring is connected to the outer wall of the equipment body through a support plate, and the inner wall of the support ring is rotatably connected to the outer wall of the feeding shaft through a double-row rolling bearing.

[0009] A further technical solution is that a cooling chamber is provided inside the feeding shaft along its axial direction, and a water supply pipe is provided inside the cooling chamber along the axial direction of the feeding shaft. A water outlet gap is left between the end of the water supply pipe facing the main body of the equipment and the cavity wall of the cooling chamber. A water supply port connected to the water supply pipe and a drain port connected to the cooling chamber are provided at the end of the feeding shaft away from the main body of the equipment.

[0010] A further technical solution is to install a sealing ring on the outer side of the main body of the equipment, aligned with the rotating hole, and the inner side of the sealing ring is sealed to the surface of the feeding shaft through a sealing ring or packing.

[0011] A further technical solution is to fix the sealing ring to the outside of the equipment body using mounting bolts.

[0012] A further technical solution is to have two annular baffles spaced apart on the outer wall of the feeding chamber surrounding the feeding shaft, with the conveying blade positioned between the two annular baffles and the feed inlet aligned with the position between the two annular baffles.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By using the anti-self-flow device of the slag cooler as a device between the slag cooler and the slag discharge pipe, the feed inlet is connected to the lower end of the slag discharge pipe. After the high-temperature slag enters the feeding chamber of the main body of the equipment, it will not immediately enter the slag cooler through the discharge outlet. Under the drive of the feeding shaft and the conveying blade, the high-temperature slag is uniformly and quantitatively fed to the slag cooler, avoiding a sudden large amount of slag from the slag discharge pipe flowing into the slag cooler and causing slag overflow and self-flow in the slag cooler; 2. The anti-self-flow device of the slag cooler can adjust the rotation speed of the conveying shaft through the motor, thereby controlling the feeding speed of the high-temperature slag to match the rotation speed of the slag cooler, thereby minimizing the risk of slag overflow and self-flow in the slag cooler. Attached Figure Description

[0014] Figure 1 This is a top view of a self-flow prevention device for a slag cooler according to this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of a self-flow prevention device for a slag cooler according to the present invention.

[0016] Figure 3 This is another cross-sectional schematic diagram of a self-flow prevention device for a slag cooler according to the present invention.

[0017] Icons: 1-Main body of equipment, 2-Feeding chamber, 3-Inlet, 4-Outlet, 5-Rotating hole, 6-Feeding shaft, 7-Conveying blade, 8-Motor, 9-First sprocket, 10-Second sprocket, 11-Chain, 12-Protective shell, 13-Support ring, 14-Support plate, 15-Double row rolling bearing, 16-Cooling chamber, 17-Water supply pipe, 18-Water supply port, 19-Drain port, 20-Sealing ring, 21-Sealing ring, 22-Mounting bolt, 23-Annular baffle, 24-Motor support. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Figures 1 to 3 The following is an embodiment of the present invention.

[0020] Example:

[0021] A self-flow prevention device for a slag cooler includes a main body 1, a feeding chamber 2 inside the main body 1, an inlet 3 connected to the feeding chamber 2 at the upper end of the main body 1, and an outlet 4 connected to the feeding chamber 2 at the lower end of the main body 1. A rotating hole 5 connected to the feeding chamber 2 is provided on the side of the main body 1. A feeding shaft 6 is rotatably installed in the rotating hole 5. One end of the feeding shaft 6 passes into the feeding chamber 2. A plurality of conveying blades 7 are arranged around the outer wall of the feeding shaft 6 inside the feeding chamber 2. The other end of the feeding shaft 6 is located outside the main body 1 and is connected to a motor 8 for driving the feeding shaft 6 to rotate. A self-flow prevention device is used between the slag cooler and the slag discharge pipe. The inlet 3 is connected to the lower end of the slag discharge pipe. After the high-temperature ash enters the feeding chamber 2 of the main body 1, it will not immediately enter the slag cooler through the outlet 4. Driven by the feeding shaft 6 and the conveying blades 7, the high-temperature ash is fed to the slag cooler at a uniform speed and in a measured manner, preventing a sudden large influx of ash into the slag cooler from causing self-flow. The self-flow prevention device allows for adjustment of the conveying shaft's rotation speed via an electric motor, thereby controlling the feeding speed of the high-temperature ash to match the rotation speed of the slag cooler, thus minimizing self-flow. The motor 8 is fixed to the outside of the main body 1 via a connecting plate, ensuring stable connection between the motor 8 and the main body 1.

[0022] A first sprocket 9 is fitted onto the outer wall of the main body 1 of the equipment, and a second sprocket 10 is mounted on the output shaft of the motor 8. The first sprocket 9 and the second sprocket 10 are connected by a chain 11. This arrangement allows the motor 8 to drive the second sprocket 10, which in turn drives the first sprocket 9 via the chain 11, thus rotating the feeding shaft 6. The diameter of the first sprocket 9 is larger than that of the second sprocket 10, which prevents the second sprocket 10 from rotating too fast, thus avoiding excessive rotation of the feeding shaft 6. It also facilitates the adjustment of the feeding shaft 6's rotation speed.

[0023] The first sprocket 9, the second sprocket 10, and the chain 11 are equipped with a protective housing 12. A motor support 24 is provided on the outer wall of the main body 1, and the motor 8 is fixed to the motor support 24. The motor 8 is also fixed to the protective housing 12. By providing the protective housing 12, the first sprocket 9, the second sprocket 10, and the chain 11 can be protected, preventing damage to them and also preventing accidental injury to operators.

[0024] A support ring 13 is rotatably fitted onto the outer wall of the equipment body 1, with the feeding shaft 6 mounted on it. The outer wall of the support ring 13 is connected to the outer wall of the equipment body 1 via a support plate 14, and the inner wall of the support ring 13 is rotatably connected to the outer wall of the feeding shaft 6 via a double-row rolling bearing 15. By providing the support ring 13, it can cooperate with the rotating hole 5 to support the feeding shaft 6. This provides rotational support force to the feeding shaft 6 at two locations, avoiding bending and deformation of the feeding shaft 6 that is easily caused by single-point support. The double-row rolling bearing 15 improves the smoothness of rotation between the support ring 13 and the feeding shaft 6. The support plate 14 ensures that the feeding shaft 6 is stably fixed to the equipment body 1, thus providing rotational support force. The support plate 14 surrounds the support ring 13 in multiple positions, further enhancing the stability of the support ring 13.

[0025] A cooling chamber 16 is provided axially inside the feeding shaft 6. A water supply pipe 17 is provided axially inside the cooling chamber 16. A water outlet gap is left between the end of the water supply pipe 17 facing the main body 1 and the cavity wall of the cooling chamber 16. A water inlet 18 connected to the water supply pipe 17 and a drain outlet 19 connected to the cooling chamber 16 are provided at the end of the feeding shaft 6 away from the main body 1. By setting up the cooling chamber 16 and the water supply pipe 17, the feeding shaft 6 can be cooled by water cooling, avoiding excessive temperature rise of the feeding shaft 6 after prolonged contact with high-temperature ash and slag, which could cause deformation of the feeding shaft 6 during rotation and affect the overall operation. During cooling, the system connects to an external water source via water supply port 18. Low-temperature cooling water enters through water supply pipe 17, flows from one end of water supply pipe 17 into the feeding chamber 2, and then flows into cooling chamber 16. In cooling chamber 16, the cooling water absorbs the heat from the feeding shaft 6, increasing its temperature. As more cooling water is injected into water supply pipe 17, it gradually flows towards drain port 19, thus continuously carrying away heat from the feeding shaft 6. The high-temperature cooling water discharged from drain port 19 can be cooled using other heat dissipation equipment and then returned to water supply pipe 17 via water supply port 18 for reuse.

[0026] A sealing ring 20 is installed on the outer side of the main body 1, aligned with the rotating hole 5. The inner side of the sealing ring 20 is sealed to the surface of the feeding shaft 6 via a sealing ring 21 or packing. By setting the sealing ring 20, the rotating hole 5 can be sealed, preventing high-temperature ash and slag from overflowing through the rotating hole 5 and causing burns to surrounding personnel. The sealing ring 21 or packing can effectively seal the gap between the sealing ring 20 and the feeding shaft 6.

[0027] The sealing ring 20 is fixedly connected to the outside of the equipment body 1 by mounting bolts 22. The sealing ring 20 is provided with mounting holes that pass through both sides. The equipment body 1 is provided with threaded holes aligned with the mounting holes at the edge of the rotating hole 5. After the mounting bolts 22 pass through the mounting holes, they are threadedly matched with the threaded holes, thus fixing the sealing ring 20 to the equipment body 1.

[0028] Two annular baffles 23 are spaced apart on the outer wall of the feeding chamber 2, surrounding the feeding shaft 6. A conveying blade 7 is positioned between the two annular baffles 23, and the feed inlet 3 is aligned with the position between the two annular baffles 23. By setting the annular baffles 23, when high-temperature ash enters the feeding chamber 2, it will fall between the two annular baffles 23. Together with the conveying blade 7, several conveying compartments are formed on the outer wall of the feeding shaft 6. The high-temperature ash will fall into the conveying compartments facing the feed inlet 3 and move with the conveying compartments. When the conveying compartments face the discharge outlet 4, the high-temperature ash will fall into the slag cooler through the discharge outlet 4.

[0029] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A device for preventing self-flow in a slag cooler, characterized in that, The device includes a main body (1), a feeding chamber (2) is provided inside the main body (1), an inlet (3) connected to the feeding chamber (2) is provided at the upper end of the main body (1), and an outlet (4) connected to the feeding chamber (2) is provided at the lower end. A rotating hole (5) connected to the feeding chamber (2) is provided on the side of the main body (1). A feeding shaft (6) is rotatably arranged in the rotating hole (5). One end of the feeding shaft (6) passes into the feeding chamber (2). Several conveying blades (7) are arranged around the outer wall of the feeding shaft (6) inside the feeding chamber (2). The other end of the feeding shaft (6) is placed outside the main body (1) and is connected to a motor (8) for driving the feeding shaft (6) to rotate.

2. The anti-gravity flow device for a slag cooler according to claim 1, characterized in that: The feeding shaft (6) is fitted with a first sprocket (9) on the outer wall of the main body (1) of the equipment. A second sprocket (10) is installed on the output shaft of the motor (8). The first sprocket (9) and the second sprocket (10) are connected by a chain (11).

3. The anti-gravity flow device for a slag cooler according to claim 2, characterized in that: The first sprocket (9), the second sprocket (10) and the chain (11) are provided with protective shells (12), and the outer wall of the main body of the equipment (1) is provided with a motor support (24), and the motor (8) is fixed to the motor support (24).

4. The anti-gravity flow device for a slag cooler according to claim 1, characterized in that: The feeding shaft (6) is rotatably fitted with a support ring (13) on the outer wall of the equipment body (1). The outer wall of the support ring (13) is connected to the outer wall of the equipment body (1) through a support plate (14). The inner wall of the support ring (13) is rotatably connected to the outer wall of the feeding shaft (6) through a double-row rolling bearing (15).

5. The anti-gravity flow device for a slag cooler according to claim 1, characterized in that: A cooling chamber (16) is provided inside the feeding shaft (6) along its axial direction. A water supply pipe (17) is provided inside the cooling chamber (16) along the axial direction of the feeding shaft (6). A water outlet gap is left between the end of the water supply pipe (17) facing the main body of the equipment (1) and the cavity wall of the cooling chamber (16). A water supply port (18) connected to the water supply pipe (17) and a drain port (19) connected to the cooling chamber (16) are provided at the end of the feeding shaft (6) away from the main body of the equipment (1).

6. The anti-gravity flow device for a slag cooler according to claim 1, characterized in that: A sealing ring (20) is installed on the outer side of the main body (1) aligned with the rotating hole (5). The inner side of the sealing ring (20) is sealed to the surface of the feeding shaft (6) by a sealing ring (21) or packing.

7. A slag cooler anti-gravity flow device according to claim 5, characterized in that: The sealing ring (20) is fixedly connected to the outside of the equipment body (1) by mounting bolts (22).

8. The anti-gravity flow device for a slag cooler according to claim 1, characterized in that: Two annular baffles (23) are arranged at intervals around the outer wall of the feeding chamber (2) surrounding the feeding shaft (6). The conveying blade (7) is arranged between the two annular baffles (23), and the feed inlet (3) is aligned with the position between the two annular baffles (23).

Images