A system for removing oxidized scale sludge from a rotary flow well of a continuous casting machine

Abstract

The utility model belongs to the technical field of steel production, and provides a system of oxidized scale pumping of oxygen skin of vortex well of continuous casting machine, including pumping pipe line, ditch, pre -sedimentation tank, pumping pipe line and external discharge ditch, the pumping pipe line is connected with the round well of vortex well and ditch, pre -sedimentation tank with ditch adjacent setting and the water level of ditch is higher than the water level of pre -sedimentation tank, the pumping pipe line is connected with pre -sedimentation tank and external discharge ditch, and the external discharge ditch is used for the external discharge of waste water. The utility model can reduce the situation of blocking external discharge ditch, and also makes the cleaning mode of oxidized scale in vortex well more environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of steel production technology, specifically to a system for cleaning and pumping water from the cyclone well of a continuous casting machine to remove iron oxide scale and slag. Background Technology

[0002] The secondary cooling water for continuous casting billets is open-circuit water. After spraying and cooling the billet surface, the secondary cooling water carries iron oxide scale and slag into the vortex well via a ditch. The vortex well structure consists of a circular well, a pump ring, and an outer ring. The secondary cooling water, carrying a large amount of iron oxide scale and slag, first flows into the circular well, which is connected to the bottom of the outer ring. After sedimentation, when the water level exceeds 6m, the water overflows into the pump ring. The water in the pump ring is then pumped back to the power turbidity storage tank for treatment by a vertical long-shaft pump through pipelines. Over long periods of production, a large amount of iron oxide scale and slag accumulates in the outer ring of the vortex well. During the annual complete shutdown maintenance, workers go down into the outer ring of the vortex well and use water guns to flush the accumulated slag into the circular well, then use slag clamps to remove it from the well. At the same time, pumping equipment is used to pump the flushing water out. During the flushing process, the churning water carries a large amount of mud and slag. Directly discharging the water will pollute the environment, clog the drainage ditch, and increase the difficulty of water treatment. Therefore, a more environmentally friendly system for cleaning iron oxide scale and slag from the vortex well is needed. Summary of the Invention

[0003] This utility model aims to solve one of the technical problems mentioned above, and provides a system for cleaning and pumping water from the cyclone well of a continuous casting machine. This system can reduce the blockage of the external drainage ditch and make the cleaning method of iron oxide slag in the cyclone well more environmentally friendly.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A system for pumping water from the slag removal system of a continuous casting machine cyclone well includes a slag removal pipeline, a trench, a pre-settling tank, a water pumping pipeline, and an external discharge trench. The slag removal pipeline connects the circular well of the cyclone well and the trench. The pre-settling tank is located adjacent to the trench, and the water level in the trench is higher than that in the pre-settling tank. The water pumping pipeline is detachably connected to the pre-settling tank and the external discharge trench, which is used to discharge wastewater.

[0006] Furthermore, the pre-sedimentation tank is located between the trench and the vortex well. The pre-sedimentation tank is connected to the trench via a first sloping water channel. The pre-sedimentation tank is connected to the circular well of the vortex well via a second sloping water channel, and the water level of the pre-sedimentation tank is higher than the water level of the circular well of the vortex well.

[0007] Furthermore, the slag extraction pipeline includes two sets of slag extraction pipes, both sets of which are connected to the circular well of the vortex well and the trench.

[0008] Furthermore, the sludge suction pipe includes two seamless steel pipes, an elbow, a sewage pump, and a hose. The two seamless steel pipes are connected as a single unit via a DN100 standard flange. The elbow is welded to one end of the single unit located in the circular well. The elbow is connected to the sewage pump via a flange. The other end of the single unit extends to the outside of the circular well and is connected to the hose via a plate-handle quick connector.

[0009] Furthermore, the pumping pipeline includes two sets of pumping pipes, both of which can be detachably connected to the pre-sedimentation tank and the external discharge ditch.

[0010] Furthermore, a slag-blocking plate is provided at the entrance of the ditch connecting to the pre-sedimentation tank.

[0011] Furthermore, the number of slag-blocking plates is three.

[0012] Furthermore, the slag-blocking plate includes two S-shaped frames, a flexible slag-blocking net, a slag-scraping plate, and a cleaning handle. The two S-shaped frames are parallel and opposite to each other. The opposite sides of the flexible slag-blocking net are movably connected to the two S-shaped frames. The slag-scraping plate is connected to the two S-shaped frames and corresponds to the turning points of the two S-shaped frames. The slag-scraping plate is in contact with the flexible slag-blocking net. The cleaning handle is connected to the side of the flexible slag-blocking net.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] In operation, the aforementioned system for cleaning and pumping water from the cyclone well of a continuous casting machine involves using a high-pressure water gun to flush the outer ring of the cyclone well, removing sludge and iron oxide scale, into the circular well. Slag is then clamped through the well using slag clamps. Simultaneously, the slag-flushing water is pumped into a drainage ditch via a slag extraction pipeline. After flowing into the ditch, the iron oxide scale, slag, and other impurities undergo initial sedimentation, producing a stream of clear water. When the water level in the ditch rises to the level connecting to the pre-settling tank, this stream of clear water flows into the pre-settling tank, where further sedimentation occurs. The slow flow rate causes a large amount of iron oxide scale to settle, resulting in supernatant water. The pumping pipeline then pumps this supernatant water from the pre-settling tank to the external drainage ditch and out of the plant. Therefore, this invention facilitates the cleaning of iron oxide scale and slag from the cyclone well. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the system for cleaning and pumping water from the cyclone well of the continuous casting machine in the first embodiment.

[0016] Figure 2 This is a schematic diagram of the slag extraction pipe.

[0017] Figure 3 This is a schematic diagram of the slag-blocking plate in the second embodiment.

[0018] Figure 4This is a side view of a flexible slag mesh.

[0019] In the attached diagram, 101-circular well, 102-cyclone well pump layer, 103-cyclone well outer ring, 1-slag extraction pipeline, 11-seamless steel pipe, 12-elbow, 13-sewage pump, 14-hose, 15-plate handle quick connector, 16-standard flange, 2-ditch, 3-pre-sedimentation tank, 4-pumping pipeline, 5-external discharge ditch, 6-second inclined trough, 7-slag baffle plate, 71-S-shaped frame, 72-flexible slag net, 73-slag scraper, 731-slag passage, 74-cleaning handle, 75-spherical limit bead, 76-installation rail, 8-first inclined trough. Detailed Implementation

[0020] 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.

[0021] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1:

[0024] like Figure 1 and Figure 2As shown, the first embodiment of this utility model provides a system for pumping water from the cyclone well of a continuous casting machine to remove iron oxide scale and slag. The system includes a slag extraction pipeline 1, a trench 2, a pre-sedimentation tank 3, a water pumping pipeline 4, and an external discharge trench 5. The trench 2 is used in daily production to settle the secondary cooling water containing iron oxide scale and slag generated during production. The slag extraction pipeline 1 connects the circular well 101 of the cyclone well to the trench 2. The pre-sedimentation tank 3 is adjacent to the trench 2, and the water level in the trench 2 is higher than the water level in the pre-sedimentation tank 3. The water pumping pipeline 4 connects the pre-sedimentation tank 3 to the external discharge trench 5, which is used to discharge wastewater.

[0025] When the above-mentioned continuous casting machine cyclone well cleaning and slag pumping system is in use, a high-pressure water gun is used to flush the outer ring sludge and iron oxide slag into the circular well 101 on the outer ring 5 of the cyclone well. Slag is then clamped through the circular well 101 by slag clamps. At the same time, the slag pumping pipeline 1 pumps the flushing slag water into the ditch 2. After the slag water flows into the ditch 2, the iron oxide slag and other impurities undergo the first sedimentation, resulting in a stream of clear water. When the water level in the ditch 2 rises to the position connecting to the pre-settling tank 3, the stream of clear water flows into the pre-settling tank 3. The stream of clear water continues to settle in the pre-settling tank 3. The slow flow rate will cause a large amount of iron oxide slag to settle in the pre-settling tank 3, resulting in supernatant water. The pumping pipeline 4 then pumps the supernatant water in the pre-settling tank 3 to the external discharge ditch 5 and discharges it from the plant. It is evident that by obtaining less supernatant water with iron oxide scale residue before discharging it to the outside through the external drainage ditch 5, this invention not only reduces the likelihood of clogging the external drainage ditch 5 but also makes the method of cleaning iron oxide scale residue in the vortex well more environmentally friendly.

[0026] In this embodiment, the pre-sedimentation tank 3 is located between the ditch 2 and the vortex well. The pre-sedimentation tank 3 and the ditch 2 are connected by a first inclined water channel 8, and the pre-sedimentation tank 3 and the circular well 101 of the vortex well are connected by a second inclined water channel 6. The water level in the pre-sedimentation tank 3 is higher than the water level in the circular well 101 of the vortex well. In daily production, the pumping pipe 4 is disconnected. At this time, when the water level in the ditch 2 rises to the preset water level, a stream of clean water flows through the first inclined water channel 8 to the pre-sedimentation tank 3. The clean water continues to settle in the pre-sedimentation tank 3 to obtain supernatant water. When the water level in the pre-sedimentation tank 3 rises to the preset water level, the supernatant water flows through the second inclined water channel 6 to the circular well 101 of the vortex well for production recycling.

[0027] In this embodiment, the slag extraction pipeline 1 includes two sets of slag extraction pipes. Both sets of slag extraction pipes are connected to the circular well 101 of the vortex well and the trench 2. Specifically, the slag extraction pipe includes two seamless steel pipes 11, an elbow 12, a sewage pump 13, and a hose 14. The two seamless steel pipes 11 are both 9m long and are connected as a single pipe by a DN100 standard flange 16. The elbow 12 is welded to one end of the single pipe in the circular well 101. The elbow 12 is connected to the sewage pump 13 through a flange. The other end of the single pipe extends to the outside of the circular well 101 and is connected to the hose 14 through a plate-handle quick connector 15. In use, the sewage pump 13, the elbow 12 and the two seamless steel pipes 11 are all located in the circular well 101 of the vortex well. The flexible hose 14 extends to the outside of the vortex well and to the trench 2. Since the integrated pipe is a steel pipe, it will not twist inside the well, reducing the blockage of the sludge pumping pipeline 1 and significantly improving the sludge removal efficiency of the vortex well.

[0028] In this embodiment, the pumping pipeline 4 includes two sets of pumping pipes, both of which can be detachably connected to the pre-sedimentation tank 3 and the external discharge ditch 5. The pumping pipes are made of DN100 seamless steel pipes, each 12m long. One end of each pumping pipe is welded with a DN100 elbow and flange to connect to a sewage pump, and the other end is welded with a DN100 plate-handle quick-connect coupling to connect to a specially made flexible hose with a plate-handle quick-change coupling. In use, a crane is used to hoist the two sets of pumping pipes onto the external discharge ditch 5 and the pre-sedimentation tank 3, with the sewage pump of each pumping pipe extending into the pre-sedimentation tank 3 to pump out the supernatant. The supernatant is then pumped through the pumping pipes to the external discharge ditch 5. In daily production, the two sets of pumping pipes can be lifted away using a crane.

[0029] In this embodiment, a slag-blocking plate 7 is provided at the inlet of the ditch 2 connecting to the pre-sedimentation tank 3, and there are three slag-blocking plates 7. The function of the slag-blocking plates 7 is to further block the iron oxide scale slag in the first stream of clear water.

[0030] Example 2:

[0031] like Figures 1 to 4 As shown, the second embodiment of this utility model provides a system for cleaning and pumping water from the cyclone well of a continuous casting machine to remove iron oxide scale and slag. Its structure is the same as that of the system for cleaning and pumping water from the cyclone well of a continuous casting machine in the first embodiment, but it has the following differences:

[0032] The slag-blocking plate 7 is a single unit. Specifically, the slag-blocking plate 7 includes two S-shaped frames 71, a flexible slag-blocking net 72, a slag-scraping plate 73, and a cleaning handle 74. The two S-shaped frames 71 are parallel and opposite to each other, and each S-shaped frame 71 is a closed frame with multiple bends. The opposite sides of the flexible slag-blocking net 72 are movably connected to the two S-shaped frames 71. Specifically, each S-shaped frame 71 has a moving channel running through both sides, and mounting rails 76 are provided at the upper and lower positions of the moving channels. The sides of the flexible slag-blocking net 72 extend to the mounting rails 76. Spherical limiting beads 75 are fixed to the sides of the flexible slag-blocking net 72 and are movably embedded in the mounting rails 76, so that the flexible slag-blocking net 72 can slide along the S-shaped frames 71 under force and the spherical limiting beads 75 are limited in the mounting rails 76. The scraper plate 73 connects to the two S-shaped frames 71. The scraper plate 73 extends outward from the bend of the two S-shaped frames 71 and away from the S-shaped frames 71. Specifically, the scraper plate 73 extends inward into the trench 2. The scraper plate 73 contacts the flexible slag mesh 72. Specifically, the scraper plate 73 has a slag passage 731, and the bottom of the slag passage 731 facing the flexible slag mesh 72 contacts the flexible slag mesh 72. The cleaning handle 74 is connected to the side of the flexible slag mesh 72. Specifically, the cleaning handle 74 is connected to the side of the flexible slag mesh 72 and extends outward from the moving channel away from the flexible slag mesh 72. When it is necessary to clean the waste residue on the flexible slag mesh 72, hold the cleaning handle 74 and move it towards the scraper plate 73. When the flexible slag mesh 72 moves relative to the scraper plate 73, the waste residue on the flexible slag mesh 72 can be scraped off by the scraper plate 73 and fall into the ditch 2 at a position away from the flexible slag mesh 72 under the guidance of the slag passage 731, so as to clean the waste residue on the flexible slag mesh 72 and prevent the water from being unable to pass through due to too much waste residue on the flexible slag mesh 72.

[0033] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A system for cleaning and pumping water from cyclone wells in continuous casting machines, characterized in that: The system includes a sludge extraction pipeline (1), a trench (2), a pre-sedimentation tank (3), a water pumping pipeline (4), and an external discharge trench (5). The sludge extraction pipeline (1) connects the circular well (101) of the vortex well and the trench (2). The pre-sedimentation tank (3) is located adjacent to the trench (2), and the water level of the trench (2) is higher than the water level of the pre-sedimentation tank (3). The water pumping pipeline (4) can be detachably connected to the pre-sedimentation tank (3) and the external discharge trench (5). The external discharge trench (5) is used to discharge wastewater.

2. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 1, characterized in that: The pre-sedimentation tank (3) is located between the ditch (2) and the vortex well. The pre-sedimentation tank (3) and the ditch (2) are connected by a first inclined water channel (8). The pre-sedimentation tank (3) and the circular well (101) of the vortex well are connected by a second inclined water channel (6). The water level of the pre-sedimentation tank (3) is higher than the water level of the circular well (101) of the vortex well.

3. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 1, characterized in that: The slag extraction pipeline (1) includes two sets of slag extraction pipes, both sets of slag extraction pipes being connected to the circular well (101) of the vortex well and the trench (2).

4. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 3, characterized in that: The sludge suction pipe includes two seamless steel pipes (11), an elbow (12), a sewage pump (13), and a hose (14). The two seamless steel pipes (11) are connected as a single pipe by a DN100 standard flange (16). The elbow (12) is welded to one end of the single pipe in the circular well (101). The elbow (12) is connected to the sewage pump (13) through a flange. The other end of the single pipe extends to the outside of the circular well (101) and is connected to the hose (14) through a plate-handle quick connector (15).

5. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 1, characterized in that: The pumping pipeline (4) includes two sets of pumping pipes, both of which can be detachably connected to the pre-sedimentation tank (3) and the external drainage ditch (5).

6. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 1, characterized in that: A slag baffle (7) is provided at the entrance of the ditch (2) that connects to the pre-sedimentation tank (3).

7. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 6, characterized in that: The number of slag baffles (7) is three.

8. The system for cleaning and pumping water from the cyclone well of a continuous casting machine as described in claim 6, characterized in that: The slag baffle (7) includes two S-shaped frames (71), a flexible slag net (72), a slag scraper (73), and a cleaning handle (74). The two S-shaped frames (71) are parallel to each other. The opposite sides of the flexible slag net (72) are movably connected to the two S-shaped frames (71). The slag scraper (73) is connected to the two S-shaped frames (71) and corresponds to the turning point of the two S-shaped frames (71). The slag scraper (73) is in contact with the flexible slag net (72). The cleaning handle (74) is connected to the side of the flexible slag net (72).

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