On-line automatic desilting device for water tank of liquid sealing type circular cooler

Abstract

The utility model discloses an on-line automatic desilting device for a water tank of a liquid sealing type circular cooler, which relates to the technical field of metallurgical sintering auxiliary equipment and comprises a pollution discharge drainage pipe, and the pollution discharge drainage pipe is sequentially connected with a water inlet end of a water replenishing pipe and a pollution discharge end of a silt pumping pipe according to the water flow direction of the pollution discharge drainage pipe. The hose section of the silt pumping pipe is hung on the swing height adjusting plate, and the silt pumping end of the hose section of the silt pumping pipe is higher than the bottom end of the swing height adjusting plate; compared with the prior art, according to the technical principle that drainage is combined with siphoning, automatic online cleaning of accumulated silt in the water tank of the circular cooler can be achieved, manual dredging work is completely replaced, the working efficiency is improved, and the working efficiency is improved. The problems of large workload and high potential safety hazard of manual silt cleaning are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical sintering auxiliary equipment, in particular to an online automatic silt-clearing device for a water tank of a liquid-sealed annular cooler. Background Art

[0002] Annular coolers are a key component of modern belt sintering processes, using a positive pressure blast from below to cool high-temperature ore. Liquid-sealed annular coolers are widely used in sintering and pelletizing processes in today's metallurgical industry.

[0003] In the production of liquid-sealed annular cooling equipment, positive pressure air blasts through high-temperature ore layers, carrying large amounts of dust particles. Under the positive pressure, these particles easily penetrate the gaps in the thermal insulation and enter the sealed water tank. This reduces the effective volume and water storage capacity of the water tank. It also causes the sealing baffles to be eroded and worn by accumulated material over time, resulting in a series of hazards such as reduced sealing performance of the annular cooler and accelerated equipment damage. Currently, there is no effective and efficient treatment method, and manual cleaning is the only option during production stoppages and maintenance, which is inefficient, labor-intensive, and poses a high safety risk. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid-sealed annular cooler water tank online automatic silt cleaning device, which can solve the problem that the existing technology can only be cleaned manually during shutdown and maintenance, with low efficiency, high labor intensity and high safety hazards.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is: this liquid-sealed annular cooler water tank online automatic silt cleaning device includes a sewage drainage pipe. According to the water flow direction of the sewage drainage pipe, the water inlet end of the water supply pipe and the sewage discharge end of the silt extraction pipe are sequentially connected to the sewage drainage pipe. The hose section of the silt extraction pipe is hung on the swing height adjustment plate, and the sewage discharge end of the hose section of the silt extraction pipe is higher than the bottom end of the swing height adjustment plate; a sewage drainage valve is provided on the pipe section between the water inlet end of the water supply pipe and the sewage discharge end of the silt extraction pipe.

[0006] In the technical solution of the above-mentioned liquid-sealed annular cooler water tank online automatic silt removal device, a more specific technical solution can also be: the water outlet end of the water supply pipe extends into the annular cooler water tank, and the lower end of the swing height adjustment plate and the silt extraction end of the silt extraction pipe extend below the liquid surface of the annular cooler water tank.

[0007] In some possible implementation schemes, the sewage discharge end of the silt extraction pipe is rigidly connected to the sewage drainage pipe, and the hose portion of the silt extraction pipe is made of soft rubber material.

[0008] In some possible implementation schemes, the upper water inlet end of the sewage drainage pipe is connected to a water source, and the lower outlet end is externally connected to a sewage receiving filter.

[0009] In some possible implementation schemes, a rotating head is provided at the top of the swing height adjustment plate.

[0010] In some possible implementation schemes, a water supply valve is installed at the water inlet end of the water supply pipe, and the switch of the water supply valve is controlled by a PLC.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0012] 1. Since silt extraction pipes, water supply pipes and drainage pipes are set in the water tank of the liquid-sealed annular cooler, the technical principle of "drainage" combined with "siphon" can be used to realize automatic online cleaning of silt inside the annular cooler water tank, completely replacing manual silt cleaning work and overcoming the difficulties of heavy workload and high safety hazards in manual silt cleaning.

[0013] 2. The fixed combination of the swing height adjustment plate and the silt extraction hose section. The swing height adjustment plate, through the interaction between the rotating head and the plate surface and the surface of the sludge layer, enables the lower end of the silt extraction hose section to maintain an appropriate distance from the surface of the sludge layer, effectively preventing abnormal situations such as silt extraction interruption caused by blockage or leakage of the silt extraction pipe, realizing continuous and stable operation of silt extraction, and at the same time, greatly improving the effect and efficiency of silt extraction.

[0014] 3. This automatic silt removal device does not require the modification of existing equipment and facilities. It has a simple structure. The water supply valve and sewage diversion valve are installed in the clean water section and are only in contact with clean water. The sewage section has no facilities except pipes, which effectively avoids abnormal conditions such as corrosion and blockage of the valves by sewage, ensuring that the device is safe, reliable, durable, maintenance-free and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Description of the marks in the figure:

[0017] Sewage drainage pipe 1, water supply pipe 2, silt extraction pipe 3, swing height adjustment plate 4, sewage drainage valve 5, annular cooler water tank 6, water tank liquid level 7, sewage collection filter 8, rotating head 9, water supply valve 10. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present invention easier to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to fully understand the present invention, but the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] In the description of the present invention, it should be understood that the terms "middle", "length", "width", "up", "down", "front", "back", "top", "bottom", "inside", "outside", "radial", "circumferential", etc., indicating the orientation or position relationship, are the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0020] like Figure 1 The liquid-sealed annular cooler water tank online automatic desilting device shown includes a sewage drainage pipe 1. According to the water flow direction of the sewage drainage pipe, the water inlet end of the water supply pipe 2 and the sewage discharge end of the silt extraction pipe 3 are sequentially connected to the sewage drainage pipe 1. The water supply pipe 2, the silt extraction pipe 3 and the sewage drainage pipe 1 are formed into an "F" shape. The hose section of the silt extraction pipe 3 is hung and fixed on the swing height adjustment plate 4. The silt extraction end of the hose section of the silt extraction pipe is higher than the bottom end of the swing height adjustment plate. The sewage discharge end of the silt extraction pipe 3 is hard-connected with the drainage pipe. The hose part of the silt extraction pipe is made of soft rubber material. A rotating head 9 is provided at the top of the swing height adjustment plate 4. The silt extraction pipe can be manually adjusted by the rotating head 9 of the swing height adjustment plate to achieve Extend into or out of the water tank; a sewage drainage valve 5 is provided in the pipe section between the water inlet end of the water supply pipe 2 and the sewage discharge end of the silt extraction pipe 3, the water outlet end of the water supply pipe 2 extends into the annular cooler water tank 6, and the lower end of the swing height adjustment plate 4 and the silt extraction end of the silt extraction pipe extend below the liquid level 7 of the annular cooler water tank; the water inlet end of the sewage drainage pipe 1 is connected to the water source, and the lower outlet end is externally connected to the sewage receiving filter 8, and the water inlet end of the water supply pipe 2 is equipped with a water supply valve 10, the switch of which is controlled by PLC. By setting the liquid level control range of the annular cooler water tank in the PLC control system, the water supply valve can be linked with the water tank water level detector of the liquid-sealed annular cooler through a signal transmission cable.

[0021] When the silt in the water tank of the annular cooler needs to be cleaned, first extend the swing height adjustment plate together with the silt extraction pipe head into the water tank and ensure that the silt extraction pipe head is below the liquid surface. Secondly, open the sewage drainage valve above the sewage drainage pipe. If a large amount of water flows out from the lower port of the sewage drainage pipe and the sewage receiver below has a certain liquid level, the sewage drainage valve can be closed and the siphon suction and slag removal can be started automatically. At the same time, after the water tank level detector detects the liquid level change, it will automatically start the water supply valve according to the liquid level range set by the PLC system. After the silt extraction and slag removal are completed, you only need to raise the swing height adjustment plate together with the silt extraction pipe head and ensure that the silt extraction pipe head is removed from the water tank liquid surface. At the same time, the water supply valve will automatically close according to the change of the water tank liquid level to complete the automatic silt extraction and slag removal work.

[0022] The device has been used in the liquid-sealed annular cooler of the 2.4 million ton pellet production line of Liuzhou Iron and Steel Co., Ltd. sintering plant, and can realize automatic online cleaning of silt accumulated inside the annular cooler water tank.

Claims

1. A liquid-sealed annular cooler water tank online automatic desilting device, characterized by: It includes a sewage drainage pipe. According to the water flow direction of the sewage drainage pipe, the water inlet end of the water supply pipe and the sewage discharge end of the silt extraction pipe are sequentially connected to the sewage drainage pipe. The hose section of the silt extraction pipe is hung on the swing height adjustment plate, and the silt extraction end of the hose section of the silt extraction pipe is higher than the bottom end of the swing height adjustment plate. A sewage drainage valve is provided on the pipe section between the water inlet end of the water supply pipe and the sewage discharge end of the silt extraction pipe.

2. The liquid-sealed annular cooler water tank online automatic desilting device according to claim 1 is characterized by: The water outlet end of the water supply pipe extends into the water tank of the annular cooler, and the lower end of the swing height adjustment plate and the silt extraction end of the silt extraction pipe extend below the liquid level of the annular cooler water tank.

3. The liquid-sealed annular cooler water tank online automatic desilting device according to claim 1 or 2, characterized in that: The sewage discharge end of the silt extraction pipe is rigidly connected to the sewage drainage pipe, and the hose portion of the silt extraction pipe is made of soft rubber material.

4. The liquid-sealed annular cooler water tank online automatic desilting device according to claim 3 is characterized by: The water inlet end of the sewage drainage pipe is connected to the water source, and the outlet end of the lower end is externally connected to the sewage receiving filter.

5. The liquid-sealed annular cooler water tank online automatic desilting device according to claim 1 or 2, characterized in that: The top end of the swing height adjustment plate is provided with a rotating head.

6. The liquid-sealed annular cooler water tank online automatic desilting device according to claim 5, characterized in that: The water inlet end of the water supply pipe is equipped with a water supply valve, and the switch of the water supply valve is controlled by PLC.

Images