Settling box of blast furnace airtight box water return pipe

Abstract

The utility model discloses a sediment box of a blast furnace airtight box water return pipe, which comprises a sediment box body, a water inlet pipe and a water outlet pipe are arranged at the top of the sediment box body, a communicating pipe is communicated between the water inlet pipe and the water outlet pipe, a blow-off pipe is arranged at the bottom of the sediment box body, and a high-pressure water pipe and an overflow pipe are further arranged at the top of the sediment box body. A glass perspective window group is arranged on the deposition box body, a dirt detection device is arranged outside the glass perspective window group, and the dirt detection device comprises a light emitting element and a light detection element. According to the sediment box of the blast furnace airtight box water return pipe, high-pressure water is introduced into the sediment box body through the high-pressure water pipe, the sediment box body can be washed, the situation that the sediment box body is blocked due to dirt deposition after being used for a long time is avoided, and stable work of the blast furnace airtight box is greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace airtight boxes for ironmaking, in particular to a sedimentation tank for the return water pipe of a blast furnace airtight box. Background Art

[0002] The blast furnace airtight box is located between the furnace top steel ring and the intermediate funnel and is the main equipment for blast furnace burden distribution. The inside of the blast furnace airtight box is sealed with nitrogen and cooled by water. The cooling water outlet pipe generally adopts a U-shaped water seal, and the temperature inside the box usually does not exceed 50°C. The motor gears inside the blast furnace airtight box are lubricated with grease. During use, the grease inside the box is likely to overflow and flow into the cooling water outlet pipe. Seriously, it may cause blockage of the cooling water outlet pipe, especially the U-shaped water seal, affecting the normal operation of the blast furnace airtight box. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sedimentation tank for the return water pipe of a blast furnace airtight box.

[0004] The technical solution for achieving the purpose of the utility model is: a sedimentation tank for the return water pipe of a blast furnace airtight box, including a sedimentation tank body. The top of the sedimentation tank body is provided with a water inlet pipe and a water outlet pipe. The first end of a connecting pipe is communicated with the water inlet pipe, and the second end of the connecting pipe is communicated with the water outlet pipe. A first valve is installed on the water inlet pipe, and the first valve is located between the first end of the connecting pipe and the sedimentation tank body. A second valve is installed on the water outlet pipe, and the second valve is located between the second end of the connecting pipe and the sedimentation tank body. A third valve is installed on the connecting pipe. The bottom of the sedimentation tank body is provided with a sewage discharge pipe, and a fourth valve is installed on the sewage discharge pipe. The top of the sedimentation tank body is further provided with a high-pressure water pipe and an overflow pipe. A fifth valve is installed on the high-pressure water pipe, and a sixth valve is installed on the overflow pipe. A glass viewing window group is provided on the sedimentation tank body, and a dirt detection device is arranged outside the glass viewing window group. The dirt detection device includes a light emitting element and a light detecting element. The light path of the light emitting element passes through the glass viewing window and penetrates the sedimentation tank body, and the light detecting element is located on the light path of the light emitting element. The light emitting element, the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are all electrically connected to a control unit.

[0005] Further, the cross-section of the sedimentation tank body is an inverted triangle. The sedimentation tank body with an inverted triangle is more conducive to the discharge of sewage in the sedimentation tank body.

[0006] Further, the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are all ball valves.

[0007] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model connects the communicating pipe between the water inlet pipe and the water outlet pipe, so that in addition to the sedimentation tank body, the water inlet pipe and the water outlet pipe can also be communicated through the communicating pipe, so that the sedimentation tank body and the communicating pipe can form a double-way communication structure, providing conditions for the cleaning of the sedimentation tank body. On the double-way communication structure of the sedimentation tank body and the communicating pipe, at the same time, by arranging the high-pressure water pipe and the overflow water pipe on the top of the sedimentation tank body, and installing valves on each pipeline, according to the usage situation, when the stains in the sedimentation tank body are deposited thickly, the third valve can be opened while the first valve and the second valve are closed, so that the cooling water in the blast furnace airtight box enters the water outlet pipe from the water inlet pipe through the communicating pipe. Under the condition of ensuring the normal return of the cooling water in the blast furnace airtight box, then the fourth valve, the fifth valve and the sixth valve are opened, and high-pressure water is introduced into the sedimentation tank body through the high-pressure water pipe to wash the sedimentation tank body, avoiding the blockage of the sedimentation tank body due to the deposition of stains after long-term use, and greatly ensuring the stable operation of the blast furnace airtight box.

[0008] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model sets the glass perspective window group on the sedimentation tank body, and then sets the dirt detection device including the light emitting element and the light detecting element outside the glass perspective window group. The dirt detection device detects the stains in the sedimentation tank body in real time, and the control unit can automatically control each valve according to the detection result of the light emitting element, realizing the self-detection and self-cleaning of the stains in the sedimentation tank body. In this way, the intelligence of the maintenance of the sedimentation tank body is greatly improved, saving manpower and material resources. Brief Description of the Drawings

[0009] Figure 1 is a schematic structural diagram of the sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model;

[0010] Figure 2 is a schematic control structure diagram of the sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model;

[0011] The dotted line in the figure indicates the optical path of the light emitting element. Detailed Embodiment

[0012] The following describes in detail the preferred embodiment of the sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model with reference to the accompanying drawings:

[0013] As Figure 1 and Figure 2As shown in the figure, a sedimentation tank for the return water pipe of a blast furnace airtight box includes a sedimentation tank body 10. The top of the sedimentation tank body 10 is provided with a water inlet pipe 1 and a water outlet pipe 2. The first end 31 of a connecting pipe 3 is communicated with the water inlet pipe 1, and the second end 32 of the connecting pipe 3 is communicated with the water outlet pipe 2. A first valve 101 is installed on the water inlet pipe 1, and the first valve 101 is located between the first end 31 of the connecting pipe 3 and the sedimentation tank body 10. A second valve 102 is installed on the water outlet pipe 2, and the second valve 102 is located between the second end 32 of the connecting pipe 3 and the sedimentation tank body 10. A third valve 103 is installed on the connecting pipe 3. A sewage pipe 4 is provided at the bottom of the sedimentation tank body 10, and a fourth valve 104 is installed on the sewage pipe 4. A high-pressure water pipe 5 and an overflow water pipe 6 are further provided at the top of the sedimentation tank body 10. A fifth valve 105 is installed on the high-pressure water pipe 5, and a sixth valve 106 is installed on the overflow water pipe 6. A glass viewing window group 100 is provided on the sedimentation tank body 10, and a dirt detection device 7 is provided outside the glass viewing window group 100. The dirt detection device 7 includes a light emitting element 71 and a light detecting element 72. The optical path of the light emitting element 71 passes through the glass viewing window 100 and through the sedimentation tank body 10, and the light detecting element 72 is located on the optical path of the light emitting element 71. The light emitting element 71, the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 are all electrically connected to a control unit 8.

[0014] For the sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model, the water inlet pipe 1 is connected to the cooling water in the blast furnace airtight box and is used as the water seal of the blast furnace airtight box. During normal use, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 are all closed, and the first valve 101 and the second valve 102 are opened. The cooling water in the blast furnace airtight box enters the sedimentation tank body 10 from the water inlet pipe 1 and then is discharged from the water outlet pipe 2.

[0015] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. When there is a lot of dirt deposited in the sedimentation tank body 10 and it needs to be cleaned, first open the third valve 103. At the same time, close the first valve 101 and the second valve 102. The cooling water in the blast furnace airtight box enters the outlet pipe 2 directly from the inlet pipe 1 through the connecting pipe 3 and is discharged from the outlet pipe 2. The cooling water in the blast furnace airtight box does not pass through the sedimentation tank body 10. Then open the fourth valve 104 and the sixth valve 106, and discharge the sewage in the sedimentation tank body 10 through the sewage discharge pipe 4. After the sewage in the sedimentation tank body 10 is drained, open the fifth valve 105, and introduce high-pressure water into the sedimentation tank body 10 through the high-pressure water pipe 5. The high-pressure water sent through the high-pressure water pipe 5 flushes the dirt in the sedimentation tank body 10. When flushing the dirt in the sedimentation tank body 10, the fourth valve 104 can be kept open first to clean the inner wall of the sedimentation tank body 10, and the sewage for cleaning is discharged through the sewage discharge pipe 4. Then close the fourth valve 104, and continuously send high-pressure water into the sedimentation tank body 10 through the high-pressure water pipe 5. When the high-pressure water in the sedimentation tank body 10 overflows, clean the top of the sedimentation tank body 10. During the cleaning process, after the high-pressure water in the sedimentation tank body 10 overflows from the overflow pipe 6, open the fourth valve 104 to discharge the sewage for cleaning through the sewage discharge pipe 4.

[0016] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. The dirt detection device 7 is arranged outside the glass viewing window group 100. The dirt detection device 7 includes the light emitting element 71 and the light detecting element 72. Among them, the light emitting element 71 emits a light signal, and the light detecting element 72 receives the light signal emitted by the light detecting element 72 and converts the light signal into an electrical signal. The optical path of the light emitting element 71 passes through the glass viewing window 100 and through the sedimentation tank body 10, and the light signal received by the light detecting element 72 is affected by the dirt in the sedimentation tank body 10. When there is less dirt in the sedimentation tank body 10 and the light transmittance is better, the light detecting element 72 can receive the light signal of the light emitting element 71. When the dirt in the sedimentation tank body 10 is thicker and the light transmittance is poorer, the light detecting element 72 cannot receive the light signal of the light emitting element 71. According to the light signal received by the light emitting element 71, the dirt in the sedimentation tank body 10 can be detected.

[0017] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. The detection signal of the light emitting element 71 is fed back to the control unit 8 in real time. According to the detection result of the light emitting element 71, the control unit 8 can control the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 to perform corresponding actions. When the light detection element 72 receives the light signal of the light emitting element 71 and there is less stain and better light transmittance in the sedimentation tank body 10, the control unit 8 controls the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 to be all closed, and the first valve 101 and the second valve 102 to be opened. The cooling water in the blast furnace airtight box enters the sedimentation tank body 10 from the water inlet pipe 1, and the sedimentation tank body 10 is used normally. When the light detection element 72 cannot receive the light signal of the light emitting element 71 and there is a thick stain and poor light transmittance in the sedimentation tank body 10, the control unit 8 controls the third valve 103 to be opened. After the first valve 101 and the second valve 102 are closed, it then controls the fourth valve 104, the fifth valve 105 and the sixth valve 106 to be opened, and the stain in the sedimentation tank body 10 is flushed with the high-pressure water sent through the high-pressure water pipe 5. In this way, the self-detection and self-cleaning of the stain in the sedimentation tank body 10 are realized.

[0018] For the sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model, in addition to the control unit 8 controlling the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 to perform corresponding actions according to the detection result of the light emitting element 71, manual operation can also be carried out on the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 according to needs.

[0019] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model connects the communicating pipe 3 between the water inlet pipe 1 and the water outlet pipe 2, so that in addition to the sedimentation tank body 10, the water inlet pipe 1 and the water outlet pipe 2 can also be communicated through the communicating pipe 3, so that the sedimentation tank body 10 and the communicating pipe 3 can form a dual-path communication structure, providing conditions for the cleaning of the sedimentation tank body 10. On the dual-path communication structure of the sedimentation tank body 10 and the communicating pipe 3, at the same time, by arranging the high-pressure water pipe 5 and the overflow water pipe 6 on the top of the sedimentation tank body 10, and installing valves on each pipeline, according to the usage situation, when the stains in the sedimentation tank body 10 are deposited thickly, the third valve 103 can be opened while the first valve 101 and the second valve 102 are closed, so that the cooling water in the blast furnace airtight box enters the water outlet pipe 2 from the water inlet pipe 1 through the communicating pipe 3. After ensuring the normal return of the cooling water in the blast furnace airtight box, the fourth valve 104, the fifth valve 105 and the sixth valve 106 are opened, and high-pressure water is introduced into the sedimentation tank body 10 through the high-pressure water pipe 5 to wash the sedimentation tank body 10, avoiding the blockage of the sedimentation tank body 10 due to stain deposition after long-term use, and greatly ensuring the stable operation of the blast furnace airtight box.

[0020] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model is provided with the glass viewing window group 100 on the sedimentation tank body 10, and then the dirt detection device 7 including the light emitting element 71 and the light detecting element 72 is arranged outside the glass viewing window group 100. The dirt detection device 7 is used to detect the stains in the sedimentation tank body 10 in real time. According to the detection result of the light emitting element 71, the control unit 8 can automatically control each valve, realizing the self-detection and self-cleaning of the stains in the sedimentation tank body 10. In this way, the intelligence of the maintenance of the sedimentation tank body 10 is greatly improved, saving manpower and material resources.

[0021] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model preferably has a cross-section of an inverted triangle for the sedimentation tank body 10. The sedimentation tank body 10 with an inverted triangle is more conducive to the discharge of sewage in the sedimentation tank body 10.

[0022] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model preferably has the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 all being ball valves.

[0023] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. Preferably, the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and the sixth valve 106 are all manual and automatic integrated valves.

[0024] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. The control unit 8 can be an MCU controller or a PLC controller.

[0025] The sedimentation tank of the return water pipe of the blast furnace airtight box of the present utility model. The first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, the sixth valve 106, the light emitting element 71 and the light detecting element 72 of the dirt detecting device 7, and the control unit 8 are all existing structures. In this regard, the present utility model will not elaborate too much.

[0026] For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A sedimentation box for a return water pipe of a blast furnace airtight box, comprising a sedimentation box body, wherein a water inlet pipe and a water outlet pipe are arranged on the top of the sedimentation box body, and the characteristics are: A first end of a connecting pipe is connected to the water inlet pipe, and a second end of the connecting pipe is connected to the water outlet pipe. A first valve is installed on the water inlet pipe, and the first valve is located between the first end of the connecting pipe and the sedimentation box body. A second valve is installed on the water outlet pipe, and the second valve is located between the second end of the connecting pipe and the sedimentation box body. A third valve is installed on the connecting pipe. A sewage pipe is provided at the bottom of the sedimentation box body, and a fourth valve is installed on the sewage pipe. A high-pressure water pipe and an overflow pipe are also provided on the top of the sedimentation box body. A fifth valve is installed on the high-pressure water pipe, and a sixth valve is installed on the overflow pipe. A glass perspective window group is provided on the sedimentation box body, and a dirt detection device is provided outside the glass perspective window group. The dirt detection device includes a light emitting element and a light detection element. The light path of the light emitting element passes through the glass perspective window and passes through the sedimentation box body, and the light detection element is located on the light path of the light emitting element. The light emitting element, the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are all electrically connected to a control unit.

2. The sedimentation box of the return pipe of the blast furnace airtight box according to claim 1, characterized in that: The cross section of the sedimentation box body is an inverted triangle.

3. The sedimentation box of the return pipe of the blast furnace airtight box according to claim 1, characterized in that: The first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are all ball valves.

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