Slag flushing system

Abstract

The utility model discloses a slag flushing system, which belongs to the technical field of iron-making blast furnace slag treatment and comprises a slag flushing pool, a hydraulic valve arranged at a water inlet of the slag flushing pool, a safety platform arranged beside the slag flushing pool, a transmission shaft arranged between the hydraulic valve and the safety platform and a proximity switch arranged on the safety platform. One end of the transmission shaft is fixedly connected with the hydraulic valve, and the other end is sequentially provided with a first contact arm and a second contact arm forwards from the tail end; the proximity switches comprise the first proximity switch and the second proximity switch, the distance between the first proximity switch and the second proximity switch is smaller than the distance between the first contact arm and the second contact arm, when the hydraulic valve is opened, the second contact arm makes contact with the second proximity switch, and when the hydraulic valve is closed, the first contact arm makes contact with the first proximity switch. The utility model can solve the problem of frequent loss of valve signals in the slag flushing system.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace slag treatment technology, and in particular to a slag flushing system. Background Technology

[0002] Currently, the slag flushing system operates in a harsh environment with high steam levels, severe equipment corrosion, and frequent valve signal malfunctions, making it difficult for operators to accurately determine valve status. During production, misjudging valve positions can lead to flooding of the slag flushing pipeline, posing a threat to personnel safety and production.

[0003] Based on the above analysis, resolving the issue of frequent valve signal loss can effectively prevent equipment malfunctions. Therefore, ensuring stable valve signal output and effectively preventing accidents caused by human error and sludge / water accumulation is a pressing technical problem that needs to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a slag flushing system that solves the problem of frequent loss of valve signals in the slag flushing system.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A slag flushing system includes a slag flushing tank, a hydraulic valve installed at the inlet of the slag flushing tank, a safety platform installed beside the slag flushing tank, a drive shaft installed between the hydraulic valve and the safety platform, and a proximity switch installed on the safety platform.

[0007] One end of the drive shaft is fixedly connected to the hydraulic valve, and the other end is provided with a first contact arm and a second contact arm in sequence from the end forward.

[0008] The proximity switch is divided into a first proximity switch and a second proximity switch. The distance between the first proximity switch and the second proximity switch is less than the distance between the first contact arm and the second contact arm. When the hydraulic valve is opened, the second contact arm contacts the second proximity switch, and when the hydraulic valve is closed, the first contact arm contacts the first proximity switch.

[0009] A further improvement of this utility model's technical solution lies in the following: the hydraulic valve includes a cylinder, a push rod, a fixed arm, a rotating arm, and a valve body; the cylinder is connected to the push rod; the top of the push rod is U-shaped, and first mounting holes are respectively provided on the U-shaped arm; the fixed arm is fixedly installed on the edge of the slag pool, extending into the slag pool, and includes two parallel side walls and a bottom plate, with second mounting holes provided at the ends of the two side walls; a first rotating shaft extends outward from the top of the rotating arm, a second rotating shaft extends outward from the middle, and the bottom end is connected to the center of the valve body; the first rotating shaft is inserted into the first mounting hole to achieve a rotatable connection between the rotating arm and the push rod; the second rotating shaft is inserted into the second mounting hole to achieve a rotatable connection between the rotating arm and the fixed arm; the valve body is rectangular.

[0010] A further improvement of the present invention is that the transmission shaft includes an inclined section and a horizontal section; the end point of the inclined section is fixedly connected to the push rod, and the inclined section and the push rod form a certain angle; a first contact arm and a second contact arm are sequentially arranged forward at the end of the horizontal section.

[0011] A further improvement of this utility model is that the included angle range is 30 to 60°.

[0012] A further improvement of this utility model is that a limiting ring is provided on the safety platform to limit the horizontal section of the transmission shaft.

[0013] A further improvement of this utility model is that the proximity switches are each provided with a transmission line and connected to the DCS.

[0014] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0015] This invention solves the technical problem of personnel misjudging valve opening and closing status when signal failure occurs, resulting in slag flushing and water accumulation. It not only eliminates the significant safety hazards of personnel maintaining signals, but also solves the problem of frequent signal loss, reduces the workload of personnel maintenance, and ensures the normal operation of equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the slag flushing system of this utility model;

[0017] Figure 2 This is a schematic diagram of the hydraulic valve in this utility model;

[0018] Among them, 1. Slag flushing tank, 2. Hydraulic valve, 21. Oil cylinder, 22. Push rod, 23. Fixed arm, 24. Rotating arm, 25. Valve body, 3. Drive shaft, 31. Inclined section, 32. Horizontal section, 4. Safety platform, 5. Proximity switch. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0022] like Figure 1 As shown, a slag flushing system includes a slag flushing tank 1, a hydraulic valve 2 installed at the inlet of the slag flushing tank 1, a drive shaft 3 installed on the hydraulic valve 2, a safety platform 4 installed next to the slag flushing tank, and a proximity switch 5 installed on the safety platform 4.

[0023] The hydraulic valve 2 includes a cylinder 21, a push rod 22, a fixed arm 23, a rotating arm 24, and a valve body 25. The cylinder 21 is connected to the push rod 22. The top of the push rod 22 is U-shaped, and first mounting holes are provided on the U-shaped arm. The fixed arm 23 is fixedly installed on the edge of the slag pool 1 and extends into the slag pool 1, including two parallel side walls and a bottom plate, with second mounting holes provided at the ends of the two side walls. The top of the rotating arm 24 extends outward with a first rotating shaft, and the middle extends outward with a second rotating shaft, with the bottom end connected to the center of the valve body 25. The first rotating shaft is inserted into the first mounting hole to achieve a rotatable connection between the rotating arm 24 and the push rod 22. The second rotating shaft is inserted into the second mounting hole to achieve a rotatable connection between the rotating arm 24 and the fixed arm 23. The valve body 25 is rectangular.

[0024] The drive shaft 3 includes an inclined section 31 and a horizontal section 32; the end of the inclined section 31 is fixedly connected to the push rod 22, and the inclined section 31 and the push rod 22 form a certain angle, the angle range being 30 to 60°; the end of the horizontal section 32 is provided with a first contact arm and a second contact arm in sequence forward.

[0025] A limiting ring is provided on the safety platform 4 to limit the horizontal section of the transmission shaft 3;

[0026] The proximity switch 5 is divided into a first proximity switch and a second proximity switch. The distance between the first proximity switch and the second proximity switch is less than the distance between the first contact arm and the second contact arm. The proximity switches 5 are respectively provided with transmission lines and connected to the DCS.

[0027] Working principle:

[0028] When hydraulic valve 2 needs to be opened, cylinder 21 drives push rod 22 to retract, valve body 25 is raised, transmission shaft 3 extends accordingly, first contact arm moves away from first proximity switch, second contact arm moves closer to second proximity switch, until valve body 25 is fully opened, second contact arm contacts second proximity switch, second proximity switch transmits valve fully opened signal to DCS, stops hydraulic valve operation, and indicates to the operator that hydraulic valve has been opened.

[0029] When hydraulic valve 2 needs to be closed, cylinder 21 drives push rod 22 forward, valve body 25 falls, drive shaft 3 retracts accordingly, first contact arm approaches first proximity switch, second contact arm moves away from second proximity switch until valve body 25 is closed, first contact arm contacts first proximity switch, first proximity switch transmits valve closed signal to DCS, stops hydraulic valve operation, and indicates to the operator that hydraulic valve has been closed.

[0030] In summary, the utility model can solve the problem of frequent valve signal loss in the slag flushing system.

Claims

1. A slag flushing system, characterized in that: Includes a slag flushing tank (1), a hydraulic valve (2) installed at the inlet of the slag flushing tank (1), a safety platform (4) installed next to the slag flushing tank, a drive shaft (3) installed between the hydraulic valve (2) and the safety platform (4), and a proximity switch (5) installed on the safety platform (4). One end of the drive shaft (3) is fixedly connected to the hydraulic valve (2), and the other end is provided with the first contact arm and the second contact arm in sequence from the end forward; The proximity switch (5) is divided into a first proximity switch and a second proximity switch. The distance between the first proximity switch and the second proximity switch is less than the distance between the first contact arm and the second contact arm. When the hydraulic valve (2) is open, the second contact arm contacts the second proximity switch. When the hydraulic valve (2) is closed, the first contact arm contacts the first proximity switch.

2. The slag flushing system according to claim 1, characterized in that: The hydraulic valve (2) includes a cylinder (21), a push rod (22), a fixed arm (23), a rotating arm (24), and a valve body (25); the cylinder (21) is connected to the push rod (22); the top of the push rod (22) is U-shaped, and a first mounting hole is provided on the U-shaped arm; the fixed arm (23) is fixedly installed on the edge of the slag pool (1) and extends towards the slag pool (1), including two parallel side walls and a bottom plate, and a second mounting hole is provided at the end points of the two side walls; the top of the rotating arm (24) extends outward to provide a first rotating shaft, the middle extends outward to provide a second rotating shaft, and the bottom end is connected to the center of the valve body (25); the first rotating shaft is inserted into the first mounting hole to realize the rotating arm (24) and the push rod (22) rotating connection; the second rotating shaft is inserted into the second mounting hole to realize the rotating arm (24) and the fixed arm (23) rotating connection; the valve body (25) is rectangular.

3. The slag flushing system according to claim 2, characterized in that: The drive shaft (3) includes an inclined section (31) and a horizontal section (32); the end of the inclined section (31) is fixedly connected to the push rod (22), and the inclined section (31) and the push rod (22) form a certain angle; the end of the horizontal section (32) is provided with a first contact arm and a second contact arm in sequence.

4. The slag flushing system according to claim 3, characterized in that: The included angle ranges from 30° to 60°.

5. The slag flushing system according to claim 1, characterized in that: The safety platform (4) is equipped with a limiting ring for limiting the horizontal section of the transmission shaft (3).

6. The slag flushing system according to claim 1, characterized in that: The proximity switches (5) are each equipped with transmission lines and connected to the DCS.

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