CN215609564U - System for back flush grain slag filter layer of gas-liquid two-phase flow - Google Patents
System for back flush grain slag filter layer of gas-liquid two-phase flow Download PDFInfo
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- CN215609564U CN215609564U CN202122382876.5U CN202122382876U CN215609564U CN 215609564 U CN215609564 U CN 215609564U CN 202122382876 U CN202122382876 U CN 202122382876U CN 215609564 U CN215609564 U CN 215609564U
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Abstract
The utility model provides a system for backwashing a water granulated slag filter layer by gas-liquid two-phase flow, which comprises a water granulated slag tank, a filter tank, a water washing unit and an air supply unit, wherein the water granulated slag tank is provided with a filter tank; an output port of the water slag groove is communicated with an input port of a filtering tank, and the filtering tank is provided with a filtering layer; an output port at the bottom of the filtering tank is communicated with an input port of the water washing unit, and an output port of the water washing unit is communicated with an input port of the punching box and an output port of the filtering tank; the delivery outlet of air feed unit and the delivery outlet intercommunication of filtering ponds, the air feed unit is swept the back to the filter layer and is washed the unit back flush to the filter layer by water, can effectively wash the filter layer.
Description
Technical Field
The utility model relates to the field of metallurgy, in particular to a system for backwashing a water slag filter layer by gas-liquid two-phase flow.
Background
The blast furnace can generate a large amount of high-temperature molten slag in the normal production process, and is divided from the slag-water separation angle after the molten slag is quenched by water, and at present, two modes, namely a mechanical method and a bottom filtration method, mainly exist. However, the mechanical method has the disadvantages of high failure rate and large workload of maintenance and repair, and thus the acceptance in the market is gradually reduced.
The core component for separating slag water by the bottom filtration water slag flushing process is a filter layer, and generally consists of natural cobblestones or a filter plate and the like. When the filter layer is used, the water slag and other impurities are easy to deposit to cause blockage and hardening, so that the effect of separating the slag from the water is influenced.
In the prior art, no effective means for effectively clearing the filtering layer and ensuring the safety and stability of the whole system exists at present.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a system for backwashing a grain slag filter layer with a gas-liquid two-phase flow, which can effectively improve the backwashing effect of the filter layer of a filter tank, reduce the probability of filter layer blockage and hardening, prolong the service life of the filter layer, effectively prevent air from entering the system due to evacuation of the filter tank, cause cavitation of a water pump, and improve the safety of the whole system.
The utility model provides a system for backwashing a water granulated slag filter layer by gas-liquid two-phase flow, which comprises a water granulated slag tank, a filter tank, a water washing unit and an air supply unit, wherein the water granulated slag tank is provided with a filter tank;
an output port of the water slag groove is communicated with an input port of a filtering tank, and the filtering tank is provided with a filtering layer;
an output port at the bottom of the filtering tank is communicated with an input port of the water washing unit, and an output port of the water washing unit is communicated with an input port of the punching box and an output port of the filtering tank;
the delivery outlet of air feed unit and the delivery outlet intercommunication of filtering ponds, air feed unit is swept the back to the filter layer by water washing unit to the filter layer back flush.
Further, the water flushing unit comprises a hot water pump set, a cooling tower, a slag flushing cold water pool and a slag flushing pump set;
the input port of hot water pump package is as the delivery outlet intercommunication of the input port and the filtering ponds of water washing unit, the delivery outlet of hot water pump package and the input port intercommunication of cooling tower, the delivery outlet of cooling tower and the cold water pool input port intercommunication of sluicing, the delivery outlet of sluicing cold water pool and the input port intercommunication of sluicing pump package, the delivery outlet of sluicing pump package is as the delivery outlet of water washing unit and the delivery outlet intercommunication of the input port and the filtering ponds of making the case.
Furthermore, a hot water valve is arranged on a pipeline of an input port of the hot water pump set.
Furthermore, the pipelines of the output ports of the hot water pump set and the slag flushing pump set are provided with cut-off valves.
Furthermore, a back flush valve is arranged on a pipeline which is communicated with the output end of the slag flushing pump set and the output port of the filter tank.
Further, an air supply stop valve is arranged on a pipeline communicated with the output port of the filter tank.
Further, the filtering tank is provided with a pressure gauge.
The utility model has the beneficial effects that: the utility model can effectively improve the back washing effect of the filter layer of the filter tank, reduce the probability of blockage and hardening, prolong the service life of the filter layer, effectively avoid the phenomenon of vacuumizing the filter tank and improve the safety of the whole system.
Drawings
The utility model is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the drawings of the specification:
the utility model provides a system for backwashing a water granulated slag filter layer by gas-liquid two-phase flow, which comprises a water granulated slag groove 1, a filter tank 2, a water washing unit and an air supply unit 11;
an output port of the granulated slag groove 1 is communicated with an input port of a filtering tank 2, and the filtering tank 2 is provided with a filtering layer 3;
an output port at the bottom of the filter tank 2 is communicated with an input port of the water washing unit, and an output port of the water washing unit is communicated with an input port of the punching box 15 and an output port of the filter tank 2;
the output port of the gas supply unit 11 is communicated with the output port of the filter tank 2, and the filter layer 3 is backwashed by the water washing unit after the filter layer is swept by the gas supply unit 11; wherein, air supply unit 11 adopts current air pump, forms compressed air with air or nitrogen gas and sweeps the filter layer, through above-mentioned structure, can effectively improve the back flush effect of the filter layer of filtering ponds, reduces the probability that the filter layer blocks up, hardens and takes place, prolongs the life of filter layer.
Specifically, the method comprises the following steps: the water flushing unit comprises a hot water pump unit 6, a cooling tower 7, a slag flushing cold water tank 8 and a slag flushing pump unit 9;
the input port of the hot water pump unit 6 is used as the input port of the water flushing unit and is communicated with the output port of the filtering tank 2, the output port of the hot water pump unit 6 is communicated with the input port of the cooling tower 7, the output port of the cooling tower 7 is communicated with the input port of the slag flushing cold water tank 8, the output port of the slag flushing cold water tank 8 is communicated with the input port of the slag flushing pump unit 9, and the output port of the slag flushing pump unit 9 is used as the output port of the water flushing unit and is communicated with the input port of the flushing tank 15 and the output port of the filtering tank; wherein, the punching box 15 is arranged at the input port of the granulated slag groove 1, and the input port of the granulated slag groove is also provided with a slag melting groove 16; through above-mentioned structure, utilize waste water after the grain slag separation to carry out cooling treatment and carry out and wash the filtering layer, can effective using water wisely does benefit to the environmental protection.
In this embodiment, a hot water valve 5 is arranged on a pipeline of an input port of the hot water pump unit 6; the pipelines of the output ports of the hot water pump unit 6 and the slag flushing pump unit 9 are both provided with a cut-off valve (10, 13); a back flush valve 14 is arranged on a pipeline which is communicated with the output end of the slag flushing pump set 9 and the output port of the filter tank 2; the pipeline that air supply unit 11 and 2 delivery outlets of filtering ponds communicate is provided with air feed trip valve 12, through the control of above-mentioned valve, can prevent effectively that the filtering ponds from by the phenomenon of evacuation, improves entire system's security.
In this embodiment, the filtering tank 2 is provided with the pressure gauge 4, and by this structure, the filtering tank can be effectively prevented from being vacuumized, thereby ensuring the safety of the whole system.
To facilitate understanding by those skilled in the art, the backwash process of the above system is as follows:
s1, opening an air supply cut-off valve, and controlling an air supply unit to work to purge a filter layer of a filter tank;
s2, closing the air supply stop valve, and sequentially performing the following operations: opening a back flush valve, starting a slag flushing pump set and opening a cut-off valve of an output port of the slag flushing pump set;
s3, after the step S2 is executed, closing a stop valve, a slag flushing pump set and a back flushing valve of an output port of a slag flushing pump set in sequence;
s4, the following actions are sequentially executed: opening a hot water valve, starting a hot water pump set and opening a stop valve of an output port of the water pump set;
and S5, judging whether the pressure in the filtering tank is smaller than or equal to a set pressure value, if so, closing a hot water pump set output port stop valve, a hot water pump set and a hot water valve in sequence to finish washing.
In step S1, the gas output from the gas supply unit is compressed gas with a pressure of 0.1MPa to 0.3MPa, and the compressed gas is compressed air or compressed nitrogen, so as to ensure effective cleaning and purging of the filter layer and prevent adverse effects caused by overpressure.
Wherein, the execution time in the step S1 is 3 min-5 min.
The execution time of step S2 is not more than 5min, which ensures that the filter layer is well washed and the safety of the whole system.
In the embodiment, the value range of the set pressure value is 10-20 kPa, so that the flushing effect is ensured, and the safety of the whole system is ensured.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. A system for backwashing a grain slag filter layer by gas-liquid two-phase flow is characterized in that: comprises a water slag tank, a filter tank, a water washing unit and an air supply unit;
an output port of the water slag groove is communicated with an input port of a filtering tank, and the filtering tank is provided with a filtering layer;
an output port at the bottom of the filtering tank is communicated with an input port of the water washing unit, and an output port of the water washing unit is communicated with an input port of the punching box and an output port of the filtering tank;
the delivery outlet of air feed unit and the delivery outlet intercommunication of filtering ponds, air feed unit is swept the back to the filter layer by water washing unit to the filter layer back flush.
2. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 1, wherein: the water flushing unit comprises a hot water pump set, a cooling tower, a slag flushing cold water tank and a slag flushing pump set;
the input port of hot water pump package is as the delivery outlet intercommunication of the input port and the filtering ponds of water washing unit, the delivery outlet of hot water pump package and the input port intercommunication of cooling tower, the delivery outlet of cooling tower and the cold water pool input port intercommunication of sluicing, the delivery outlet of sluicing cold water pool and the input port intercommunication of sluicing pump package, the delivery outlet of sluicing pump package is as the delivery outlet of water washing unit and the delivery outlet intercommunication of the input port and the filtering ponds of making the case.
3. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 2, wherein: and a hot water valve is arranged on a pipeline of an input port of the hot water pump set.
4. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 2, wherein: and the pipelines of the output ports of the hot water pump set and the slag flushing pump set are provided with cut-off valves.
5. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 2, wherein: and a back flush valve is arranged on a pipeline which is communicated with the output end of the slag flushing pump set and the output port of the filter tank.
6. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 1, wherein: and an air supply stop valve is arranged on a pipeline communicated with the output port of the filter tank.
7. The system for backwashing a grain slag filter layer by using gas-liquid two-phase flow according to claim 1, wherein: the filtering tank is provided with a pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122382876.5U CN215609564U (en) | 2021-09-27 | 2021-09-27 | System for back flush grain slag filter layer of gas-liquid two-phase flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122382876.5U CN215609564U (en) | 2021-09-27 | 2021-09-27 | System for back flush grain slag filter layer of gas-liquid two-phase flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215609564U true CN215609564U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122382876.5U Active CN215609564U (en) | 2021-09-27 | 2021-09-27 | System for back flush grain slag filter layer of gas-liquid two-phase flow |
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| Country | Link |
|---|---|
| CN (1) | CN215609564U (en) |
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2021
- 2021-09-27 CN CN202122382876.5U patent/CN215609564U/en active Active
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