Energy-saving device for cleaning water of slag flushing rotary drum

Abstract

The utility model provides an energy-saving device for cleaning water of a slag-flushing rotary drum, which comprises a slag-flushing circulating system, a first valve, a second valve and a slag-flushing master control chamber, and the slag-flushing circulating system comprises a slag-flushing circulating water pump, a flushing box and a rotary drum; the rotary drum is connected with the slag flushing circulating water pump through a pipeline, and a seventh valve is arranged on the pipeline; the slag flushing circulating water pump is connected with the flushing box through a pipeline, and an eighth valve is arranged on the pipeline; the punching box is connected with a drum through a pipeline, the drum is connected with a nozzle, and the nozzle is connected with an external water supply mechanism through a pipeline; one end of the first valve is connected with a pipeline between the slag flushing circulating water pump and the eighth valve through a pipeline, and the other end is connected with the nozzle through a first pipeline; the second valve is connected to a pipeline between the nozzle and the external water supply mechanism; and a control system is arranged in the slag flushing master control chamber. According to the utility model, the pipeline, the valve and the control system are arranged, so that the quantity of drum cleaning water entering the slag flushing circulating system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy saving, in particular to an energy-saving device for cleaning water of a slag-flushing drum. Background Art

[0002] As a key auxiliary production facility of blast furnace, the slag flushing system is mainly used to cool the slag before transportation. A large amount of water is needed for cooling during the production process. The drum of key equipment needs to be sprayed with water for cooling and flushing the external screen during operation. The operating pressure is 0.5mpa and the flow rate is about 100m 3 / h. The original design used external water supply for the slag flushing system, which caused the circulating water system to overflow and wasted water resources. Utility Model Content

[0003] According to the technical problems raised above, an energy-saving device for cleaning water of a slag washing drum is provided. The technical means adopted by the utility model are as follows:

[0004] An energy-saving device for cleaning water of a slag flushing drum, comprising a slag flushing circulation system, and further comprising: a first valve, a second valve and a slag flushing main control room, wherein the slag flushing circulation system comprises a slag flushing circulation water pump, a flushing box and a drum;

[0005] The drum is connected to a slag flushing circulating water pump through a pipeline, and a seventh valve is provided on the pipeline; the slag flushing circulating water pump is connected to a flushing box through a pipeline, and an eighth valve is provided on the pipeline; the flushing box is connected to the drum through a pipeline, the drum is connected to a nozzle, and the nozzle is connected to an external water supply mechanism through a pipeline;

[0006] One end of the first valve is connected to the pipeline between the slag flushing circulating water pump and the eighth valve through a pipeline, and the other end is connected to the nozzle through a first pipeline; the second valve is connected to the pipeline between the nozzle and the external water supply mechanism;

[0007] A control system is provided in the slag flushing main control room, and the control system is electrically connected to the first valve and the second valve.

[0008] Furthermore, an automatic backwashing filter is provided on the first pipeline, the connecting pipeline between the automatic backwashing filter and the first valve is recorded as the second pipeline, and the connecting pipeline between the automatic backwashing filter and the nozzle is recorded as the third pipeline.

[0009] Furthermore, a fourth valve electrically connected to the control system is installed on the second pipeline, and the connecting pipeline between the fourth valve and the first valve is recorded as the fourth pipeline.

[0010] Furthermore, a fifth valve electrically connected to the control system is installed on the third pipeline, and the connecting pipeline between the fifth valve and the nozzle is recorded as the fifth pipeline.

[0011] Furthermore, the first pipeline is connected in parallel with a sixth pipeline, one end of the sixth pipeline is connected to the fourth pipeline, and the other end is connected to the fifth pipeline; a third valve electrically connected to the control system is installed on the sixth pipeline.

[0012] Furthermore, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are electric gate valves.

[0013] Furthermore, the automatic backwash filter is connected to a sixth valve via a pipeline, and the sixth valve is connected to the drum via a pipeline.

[0014] Furthermore, the filtering accuracy of the automatic backwashing filter is 0.2 mm, and the backwashing pressure difference is controlled at 0.1 MPa.

[0015] Furthermore, the diameter of the cleaning water hole of the nozzle is 3mm×4mm.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The utility model reduces the amount of drum cleaning water entering the slag flushing circulation system by installing pipes, valves and control systems according to the on-site process operation conditions. A pipeline is connected in parallel to the outlet of the slag flushing circulation water pump, the other end of which can be connected to the nozzle, and a first valve is set on the pipeline to achieve synchronous water supply.

[0018] 2. When water replenishment is needed, the utility model can control the amount of water entering from the external water source by switching the second valve to maintain the balance of the slag flushing circulating water system.

[0019] 3. The utility model prevents nozzle blockage by setting up an automatic backwash filter, the fourth valve, the fifth valve and the third valve. By enlarging the diameter of the drum cleaning water hole, the water flow is increased and the blockage frequency is reduced.

[0020] 4. The automatic backwash filter of the utility model is connected to the drum through the sixth valve, and the drainage can be discharged into the water pool under the drum through the sixth valve and the pipeline, wherein the impurities are discharged together with the water residue.

[0021] Based on the above reasons, the utility model can be widely promoted in the fields of energy saving and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of a single-field slag flushing system of the utility model.

[0024] In the figure: 1. first valve; 2. second valve; 3. third valve; 4. fourth valve; 5. automatic backwash filter; 6. fifth valve; 7. slag flushing circulation water pump; 8. cleaning water hole; 9. control system; 10. sixth valve; 11. flushing box; 12. drum; 13. blast furnace; 14. seventh valve; 15. eighth valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides an energy-saving device for cleaning water of a slag flushing drum, which controls the amount of cleaning water of the drum entering a slag flushing circulation system by installing valves, a control system and the like, thereby reducing overflow.

[0027] like Figure 1 As shown, an energy-saving device for cleaning water of a slag flushing drum comprises a slag flushing circulation system, and further comprises: a first valve 1, a second valve 2 and a slag flushing main control room, wherein the slag flushing circulation system comprises a slag flushing circulation water pump 7, a flushing box 11 and a drum 12; the drum 12 is connected to the slag flushing circulation water pump 7 through a pipeline, and a seventh valve 14 is arranged on the pipeline; the slag flushing circulation water pump 7 is connected to the flushing box 11 through a pipeline, and an eighth valve (15) is arranged on the pipeline; the flushing box 11 is connected to the drum 12 through a pipeline, the drum 12 is connected with a nozzle, and the nozzle is connected to an external water supply mechanism through a pipeline; one end of the first valve 1 is connected to the pipeline between the slag flushing circulation water pump 7 and the eighth valve 15 through a pipeline, and the other end is connected to the nozzle (the diameter of the cleaning water hole 8 on it is 3mm×4mm) through a first pipeline; the second valve 2 is connected to the pipeline between the nozzle and the external water supply mechanism; a control system 9 (using the existing control system) is arranged in the slag flushing main control room, and the control system 9 is electrically connected to the first valve 1 and the second valve 2.

[0028] In this embodiment, an automatic backwash filter 5 is provided on the first pipeline. The automatic backwash filter 5 adopts an existing filter with a filtration accuracy of 0.2 mm and a backwash pressure difference controlled at 0.1 MPa. The connecting pipeline between the automatic backwash filter 5 and the first valve 1 is recorded as the second pipeline, and the connecting pipeline between the automatic backwash filter 5 and the nozzle is recorded as the third pipeline.

[0029] In this embodiment, a fourth valve 4 electrically connected to the control system 9 is installed on the second pipeline, and the connecting pipeline between the fourth valve 4 and the first valve 1 is recorded as the fourth pipeline.

[0030] In this embodiment, a fifth valve 6 electrically connected to the control system 9 is installed on the third pipeline, and the connecting pipeline between the fifth valve 6 and the nozzle is recorded as the fifth pipeline.

[0031] In this embodiment, the first valve 1 , the second valve 2 , the third valve 3 , the fourth valve 4 and the fifth valve 6 are electric gate valves.

[0032] In this embodiment, the first pipeline is connected in parallel with a sixth pipeline, one end of the sixth pipeline is connected to the fourth pipeline, and the other end is connected to the fifth pipeline; the sixth pipeline is installed with a third valve 3 electrically connected to the control system 9.

[0033] In this embodiment, the automatic backwash filter 5 is connected to the sixth valve 10 through a pipeline, and the sixth valve 10 is connected to the drum 12 through a pipeline.

[0034] 1. Five electric gate valves (first valve 1, second valve 2, third valve 3, fourth valve 4, fifth valve 6) are installed on each drum cleaning water pipeline. The control system 9 is connected to the main control room of the slag flushing operation area and is interlocked with the slag flushing circulating water pump 7.

[0035] 2. According to the production and operation rules of the blast furnace 13, iron is tapped once every 2 hours. When slag iron is tapped, the slag flushing circulating water pump 7 is started and stopped, and the first valve 1 of the drum cleaning water is started and stopped simultaneously to realize synchronous water supply.

[0036] 3. After testing, the pressure of the slag flushing circulation water pump 7 and the external drum cleaning water is basically the same, maintained at about 0.5 MPa, which meets the slag flushing drum cleaning effect.

[0037] 4. After the system transformation is completed, the second valve 2 is in a closed state during normal operation. Since the evaporation volume is greater than the water intake, water replenishment is required. Human intervention can be performed to control the amount of water entering from the external source by switching the second valve 2 to maintain the balance of the slag flushing circulating water system.

[0038] 5. Since the external water supply is clean water, the water discharged from the slag-flushing circulating water pump 7 is a mixture of slag and water. In order to prevent the nozzle from being blocked, two measures are taken. One is to install an automatic backwash filter 5 and valves (the fourth valve 4 and the fifth valve 6) with a filtration accuracy of 0.2mm, and install a bypass pipe and the third valve 3 in parallel. During normal operation, the third valve 3 is closed, and the fourth valve 4 and the fifth valve 6 are always open. When the filter is blocked or fails, the third valve 3 is opened first, and then the fourth valve 4 and the fifth valve 6 are closed. The bypass pipe can be switched to maintain production, and the pipeline is emptied to repair the filter; the second is to expand the diameter of the drum cleaning water hole 8 from 2mm×4mm to 3mm×4mm, increase water flow, and reduce the frequency of blockage.

[0039] 6. The backwash differential pressure of the automatic backwash filter 5 is controlled at 0.1 MPa, and the drainage is discharged into the water pool under the drum through the sixth valve 10 and the pipeline, wherein the impurities are discharged together with the water slag.

[0040] The utility model reduces the amount of drum cleaning water entering the slag flushing circulation system by installing pipelines, valves and a control system (electric control system) according to the on-site process operation conditions.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An energy-saving device for cleaning water of a slag-washing drum, comprising a slag-washing circulation system, characterized in that: Also includes: A first valve (1), a second valve (2) and a slag flushing main control room, wherein the slag flushing circulation system comprises a slag flushing circulation water pump (7), a flushing box (11) and a rotary drum (12); The rotary drum (12) is connected to a slag flushing circulating water pump (7) through a pipeline, and a seventh valve (14) is provided on the pipeline; the slag flushing circulating water pump (7) is connected to a flushing box (11) through a pipeline, and an eighth valve (15) is provided on the pipeline; the flushing box (11) is connected to the rotary drum (12) through a pipeline, and the rotary drum (12) is connected to a nozzle, and the nozzle is connected to an external water supply mechanism through a pipeline; One end of the first valve (1) is connected to the pipeline between the slag flushing circulating water pump (7) and the eighth valve (15) through a pipeline, and the other end is connected to the nozzle through a first pipeline; the second valve (2) is connected to the pipeline between the nozzle and the external water supply mechanism; A control system (9) is provided in the slag flushing main control room, and the control system (9) is electrically connected to the first valve (1) and the second valve (2).

2. The energy-saving device for cleaning water of the slag drum according to claim 1 is characterized in that: An automatic backwashing filter (5) is provided on the first pipeline, the connecting pipeline between the automatic backwashing filter (5) and the first valve (1) is marked as the second pipeline, and the connecting pipeline between the automatic backwashing filter (5) and the nozzle is marked as the third pipeline.

3. The energy-saving device for cleaning water of the slag drum according to claim 2 is characterized in that: A fourth valve (4) electrically connected to the control system (9) is installed on the second pipeline, and the connecting pipeline between the fourth valve (4) and the first valve (1) is recorded as the fourth pipeline.

4. The energy-saving device for cleaning water of the slag drum according to claim 3 is characterized in that: The third pipeline is provided with a fifth valve (6) electrically connected to the control system (9), and the connecting pipeline between the fifth valve (6) and the nozzle is recorded as the fifth pipeline.

5. The energy-saving device for cleaning water of the slag drum according to claim 4 is characterized in that: The first pipeline is connected in parallel with a sixth pipeline, one end of the sixth pipeline is connected to the fourth pipeline, and the other end is connected to the fifth pipeline; a third valve (3) electrically connected to the control system (9) is installed on the sixth pipeline.

6. The energy-saving device for cleaning water of the slag drum according to claim 5 is characterized in that: The first valve (1), the second valve (2), the third valve (3), the fourth valve (4) and the fifth valve (6) are electric gate valves.

7. The energy-saving device for cleaning water of the slag drum according to claim 2 is characterized in that: The automatic backwash filter (5) is connected to the sixth valve (10) via a pipeline, and the sixth valve (10) is connected to the drum (12) via a pipeline.

8. The energy-saving device for cleaning water of a slag-washing drum according to claim 2 or 7, characterized in that: The filtration accuracy of the automatic backwash filter (5) is 0.2 mm, and the backwash differential pressure is controlled at 0.1 MPa.

9. The energy-saving device for cleaning water of a slag-washing drum according to claim 1, characterized in that: The diameter of the cleaning water hole (8) of the nozzle is 3mm×4mm.

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