CN216295402U - Back flush filtering ponds - Google Patents
Back flush filtering ponds Download PDFInfo
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- CN216295402U CN216295402U CN202122898708.1U CN202122898708U CN216295402U CN 216295402 U CN216295402 U CN 216295402U CN 202122898708 U CN202122898708 U CN 202122898708U CN 216295402 U CN216295402 U CN 216295402U
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- backflushing
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Abstract
The utility model provides a backwashing filter tank, which comprises a first filtering backwashing area (1) and a second filtering backwashing area (2), wherein the first filtering backwashing area (1) comprises a first filtering backwashing main pipe (11) and a first filtering backwashing branch pipe (12) which are sequentially connected, the second filtering backwashing area (2) comprises a second filtering backwashing main pipe (21) and a second filtering backwashing branch pipe (22) which are sequentially connected, and the first filtering backwashing branch pipe (12) and the second filtering backwashing branch pipe (22) can independently control water inlet and water outlet. Through targeted regional back washing, residual fine grain slag particles in gaps of the filter materials can be effectively cleaned, and the hardening speed of each layer of filter materials is greatly delayed. The service cycle of the filter material is prolonged, the dosage of chemical agents is reduced, the production cost is reduced, and the practical economic benefit can be generated.
Description
Technical Field
The utility model relates to the field of metal smelting equipment, in particular to a backwashing filter tank.
Background
The environment-friendly bottom filtration method for treating the blast furnace slag is a high-efficiency, stable, economic and environment-friendly method for treating the blast furnace slag. Blast furnace slag flows into a granulating pool through a slag ditch, is smashed, quenched and granulated by high-speed water flow sprayed out of a granulator, and is further soaked and quenched in the granulating pool. The quenched slag-water mixture flows into a working filter tank through an outlet device and an outlet valve, the filtered slag flushing water passes through a filter pipe and is pumped into a cooling tower by an upper tower pump for cooling, the cooled slag flushing water enters a water storage tank, and the water in the water storage tank is pumped into the furnace by a slag flushing pump for continuous slag flushing and recycling. The slag flushing pump periodically pumps slag flushing water into the filter pipe of the filter tank to perform back flushing on the filter pipe and the filter layer.
In the long-time use process, the force of backwashing at the position far away from the water outlet point is changed when the filter tank is backwashed, the conventional filter tank backwashing filter pipe only comprises one main filter pipe and a plurality of branch filter pipes, the backwashing can be carried out on the whole filter tank, and the targeted backwashing operation on the area which is easy to harden can not be realized.
SUMMERY OF THE UTILITY MODEL
In order to improve the backwashing effect, the utility model provides a backwashing filter tank, which is divided into different filtering backwashing areas, and can more effectively clean the residual fine water slag particles in the gaps of the filter materials through targeted regional backwashing, thereby greatly delaying the hardening speed of each layer of filter materials. The service cycle of the filter material is prolonged, the dosage of chemical agents is reduced, the production cost is reduced, and the practical economic benefit can be generated.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a backwash filter tank is provided with a first filtering backwash area and a second filtering backwash area, the first filtering backwash area and the second filtering backwash area are arranged adjacently along the horizontal direction, the first filtering backwash area is provided with a first filtering backwash main pipe and a first filtering backwash branch pipe which are connected in sequence, the second filtering backwash area is provided with a second filtering backwash main pipe and a second filtering backwash branch pipe which are connected in sequence, the pipe wall of the first filtering backwash branch pipe and the pipe wall of the second filtering backwash branch pipe are provided with filtering through holes, and the first filtering backwash branch pipe and the second filtering backwash branch pipe can independently control water inlet and water outlet.
The first filtering and backwashing area and the second filtering and backwashing area are adjacently arranged along the front-back direction, the first filtering and backwashing area is provided with a plurality of first filtering and backwashing branch pipes which are arranged at intervals along the front-back direction, and the second filtering and backwashing area is provided with a plurality of second filtering and backwashing branch pipes which are arranged at intervals along the front-back direction.
The first filtering backwashing branch pipe and the second filtering backwashing branch pipe extend along the left-right direction, and the first filtering backwashing main pipe and the second filtering backwashing main pipe extend along the front-back direction.
The second filtering and backwashing area is internally provided with two second filtering and backwashing main pipes, and the first filtering and backwashing main pipe is positioned between the two second filtering and backwashing main pipes.
The first filtering back-flushing branch pipe and the second filtering back-flushing branch pipe are both positioned in the same horizontal plane, and the first filtering back-flushing branch pipe and the second filtering back-flushing branch pipe are positioned at the left side and the right side of the first filtering back-flushing main pipe.
The first filtering backwash branch pipe on the left side of the first filtering backwash main pipe and the first filtering backwash branch pipe on the right side of the first filtering backwash main pipe are mirror images of each other, and the second filtering backwash branch pipe on the left side of the first filtering backwash main pipe and the second filtering backwash branch pipe on the right side of the first filtering backwash main pipe are mirror images of each other.
The volume of the first filtering and backwashing area is the same as that of the second filtering and backwashing area, the first filtering and backwashing main pipe, the first filtering and backwashing branch pipe, the second filtering and backwashing main pipe and the second filtering and backwashing branch pipe are all positioned at the bottom of the backwashing filter tank, and the inlet of the backwashing filter tank corresponds to the first filtering and backwashing area.
The backwash filter tank is externally provided with a first filtered water discharge pipeline, a second filtered water discharge pipeline, a first backwash water supply pipeline and a second backwash water supply pipeline; the water in the backwashing filter tank can sequentially pass through the first filtering backwashing branch pipe and the first filtering backwashing main pipe and then enter the first filtered water discharge pipeline; the water in the backwashing filter tank can also sequentially pass through the second filtering backwashing branch pipe and the second filtering backwashing main pipe and then enter a second filtered water discharge pipeline; water in the first backwashing water supply pipeline can sequentially pass through the first filtering backwashing main pipe and the first filtering backwashing branch pipe and then enter the backwashing filter tank; the water in the second backwashing water supply pipeline can sequentially pass through the second filtering backwashing main pipe and the second filtering backwashing branch pipe and then enter the backwashing filter tank.
The first filtered water discharge pipeline is connected with the rear end of the first filtering and backwashing main pipe, the second filtered water discharge pipeline is connected with the rear end of the second filtering and backwashing main pipe, and the first filtered water discharge pipeline and the second filtered water discharge pipeline are both provided with a water discharge control valve group.
The first back washing water supply line is connected to the first filtered water discharge line, the second back washing water supply line is connected to the second filtered water discharge line, and both the first back washing water supply line and the second back washing water supply line are provided with water injection control valve groups.
The utility model has the beneficial effects that: the backwashing filter tank is divided into different filtering backwashing areas, and fine grain slag particles remained in gaps of filter materials can be effectively cleaned through targeted regional backwashing, so that the hardening speed of each layer of filter materials is greatly delayed. The service cycle of the filter material is prolonged, the dosage of chemical agents is reduced, the production cost is reduced, and the practical economic benefit can be generated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic top view of a backwash filter tank according to the present invention.
Fig. 2 is an overall top view schematic diagram of the backwash filter tank of the present invention.
1. A first filtration backwash zone; 2. a second filtration backwash zone; 6. a side wall;
11. a first filtering backwash main pipe; 12. a first filtering backwash branch pipe;
21. a second filtering backwash main pipe; 22. a second filtering backwash branch pipe;
31. a first filtered water discharge line; 32. a second filtered water discharge line; 33. a drainage control valve group; 34. a main drain line;
41. a first backwash water supply line; 42. a second backwash water supply line; 43. a water injection control valve group; 44. a water injection main line;
51. flushing a slag channel; 52. slag flushing runner valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A backwash filter tank comprises a first filtering backwash area 1 and a second filtering backwash area 2, wherein the first filtering backwash area 1 and the second filtering backwash area 2 are arranged adjacently along a horizontal direction (such as a front-back direction), the first filtering backwash area 1 comprises a first filtering backwash main pipe 11 and a first filtering backwash branch pipe 12 which are sequentially connected, the second filtering backwash area 2 comprises a second filtering backwash main pipe 21 and a second filtering backwash branch pipe 22 which are sequentially connected, filtering through holes are formed in the pipe wall of the first filtering backwash branch pipe 12 and the pipe wall of the second filtering backwash branch pipe 22, and the first filtering backwash branch pipe 12 and the second filtering backwash branch pipe 22 can independently control water inlet and water outlet, as shown in figures 1 and 2.
The backwash filter tank comprises a side wall 6 and an internal receiving space comprising a first filtration backwash zone 1 and a second filtration backwash zone 2. According to the requirement, the water in the backwashing filter tank can only enter the first filtering backwashing branch pipe 12 or the second filtering backwashing branch pipe 22, and the water in the backwashing filter tank can simultaneously enter the first filtering backwashing branch pipe 12 and the second filtering backwashing branch pipe 22; only the water in the first filtering backwash branch pipe 12 or the second filtering backwash branch pipe 22 enters the backwash filter tank, or the water in the first filtering backwash branch pipe 12 and the second filtering backwash branch pipe 22 may enter the backwash filter tank at the same time.
In the present embodiment, the first filtering and backwashing area 1 and the second filtering and backwashing area 2 are adjacently arranged in the front-back direction, the first filtering and backwashing area 1 contains a plurality of first filtering and backwashing branch pipes 12 arranged at intervals in the front-back direction, and the second filtering and backwashing area 2 contains a plurality of second filtering and backwashing branch pipes 22 arranged at intervals in the front-back direction, as shown in fig. 1.
In the present embodiment, the first filtering backwash branch pipe 12 and the second filtering backwash branch pipe 22 both extend in the left-right direction, and the pipe diameter of the first filtering backwash branch pipe 12 and the pipe diameter of the second filtering backwash branch pipe 22 may be substantially the same. The first filtering backwash main pipe 11 and the second filtering backwash main pipe 21 both extend in the front-rear direction, and the pipe diameter of the first filtering backwash main pipe 11 is greater than or equal to the pipe diameter of the second filtering backwash main pipe 21.
In this embodiment, the second filtering and backwashing area 2 includes a first filtering and backwashing main pipe 11 and two second filtering and backwashing main pipes 21, the first filtering and backwashing main pipe 11 is located between the two second filtering and backwashing main pipes 21, the two second filtering and backwashing main pipes 21 are symmetrical and mirror images of each other on the left and right sides of the first filtering and backwashing main pipe 11, and the pipe diameter of the first filtering and backwashing main pipe 11 is greater than that of the second filtering and backwashing main pipe 21, as shown in fig. 1. A part of the first main filter backwash pipe 11 is located in the second filter backwash zone 2.
In the present embodiment, the first filtering backwash branch pipe 12 and the second filtering backwash branch pipe 22 are located in the same horizontal plane, that is, the axes of all the first filtering backwash branch pipes 12 and the axes of all the second filtering backwash branch pipes 22 are located in the same horizontal plane, and the first filtering backwash branch pipes 12 and the second filtering backwash branch pipes 22 are located on the left and right sides of the first filtering backwash main pipe 11.
In the present exemplary embodiment, the first filter backwash branch pipe 12 on the left side of the first filter backwash main pipe 11 and the first filter backwash branch pipe 12 on the right side of the first filter backwash main pipe 11 are mirror images of each other, and the second filter backwash branch pipe 22 on the left side of the first filter backwash main pipe 11 and the second filter backwash branch pipe 22 on the right side of the first filter backwash main pipe 11 are mirror images of each other.
In this embodiment, the volume of the first filtering backwash area 1 is substantially the same as the volume of the second filtering backwash area 2, the first filtering backwash main pipe 11, the first filtering backwash branch pipe 12, the second filtering backwash main pipe 21 and the second filtering backwash branch pipe 22 are all located at the bottom of the backwash filter tank, the inlet of the backwash filter tank corresponds to the first filtering backwash area 1, and the inlet of the backwash filter tank is located at the inlet side of the first filtering backwash main pipe 11.
In the present exemplary embodiment, the length of the first main filter backwash pipe 11 is approximately twice the length of the second main filter backwash pipe 21. Water from the first filter backwash zone 1 will enter the first filter backwash branch 12 and water from the second filter backwash zone 2 will enter the second filter backwash branch 22. The water in the first filter backwash branch pipe 12 will enter the first filter backwash zone 1 and the water in the second filter backwash branch pipe 22 will enter the second filter backwash zone 2.
In the present embodiment, the backwash filter tank includes a first filtered water discharge line 31, a second filtered water discharge line 32, a first backwash water supply line 41 and a second backwash water supply line 42 outside; the water in the backwashing filter tank can sequentially pass through the first filtering backwashing branch pipe 12 and the first filtering backwashing main pipe 11 and then enter the first filtered water discharge pipeline 31; the water in the backwash filter tank can also sequentially pass through the second filtering backwash branch pipe 22 and the second filtering backwash main pipe 21 and then enter the second filtered water discharge pipeline 32; the water in the first backwash water supply line 41 can sequentially pass through the first filtering backwash main pipe 11 and the first filtering backwash branch pipe 12 and then enter the backwash filter tank; the water in the second backwash water supply line 42 can sequentially pass through the second filtering backwash main pipe 21 and the second filtering backwash branch pipe 22 and then enter the backwash filter tank.
In the present embodiment, one end of the first filtered water discharge line 31 is connected to the rear end of the first filtered backwash main pipe 11 in a one-to-one correspondence, one end of the second filtered water discharge line 32 is connected to the rear end of the second filtered backwash main pipe 21 in a one-to-one correspondence, and the first filtered water discharge line 31 and the second filtered water discharge line 32 are each provided with a drain control valve group 33. The other end of the first filtered water discharge line 31 and the other end of the second filtered water discharge line 32 are both in communication with a drain main line 34, as shown in fig. 2.
One of the backwash filter tank a includes a first filtered water discharge line 31, a first filtered backwash main pipe 11, two second filtered backwash main pipes 21, and two second filtered water discharge lines 32, and a drain pump is provided on a drain main pipe 34. The first filtered water discharge line 31 and the second filtered water discharge line 32 are connected in parallel, the two second filtered water discharge lines 32 are connected in parallel, and a drain control valve group 33 is provided on each of the two second filtered water discharge lines 32.
In the present embodiment, one end of the first back washing water supply line 41 is connected to the first filtered water discharge line 31, one end of the second back washing water supply line 42 is simultaneously connected to two second filtered water discharge lines 32, a water injection control valve group 43 is provided on each of the first back washing water supply line 41 and the second back washing water supply line 42, the other end of the first back washing water supply line 41 and the other end of the second back washing water supply line 42 are communicated with a water injection main line 44, and a water injection pump may be provided on the water injection main line 44. The first backwash water supply line 41 and the second backwash water supply line 42 are in parallel relationship.
According to the requirement, by controlling the water discharge control valve group 33 and the water injection control valve group 43, the water in the backwashing filter tank can enter the first filtering backwashing branch pipe 12 and be discharged, the water in the first filtering backwashing branch pipe 12 can enter the backwashing filter tank for backwashing, the water in the backwashing filter tank can enter the second filtering backwashing branch pipe 22 and be discharged, and the water in the second filtering backwashing branch pipe 22 can enter the backwashing filter tank for backwashing.
The working process of the backwash filter tank is described below.
The blast furnace slag treatment system comprises two backwashing filter tanks A, granulated slag quenched by a blast furnace flows into one filter tank A through a slag flushing channel 51 and a slag flushing channel valve 52, slag-water separation is realized through gravity filtration, two groups of filter branch pipes (a first filtering backwashing branch pipe 12 and a second filtering backwashing branch pipe 22) are used simultaneously for filtration, namely water in one backwashing filter tank simultaneously enters a first filtered water discharge pipeline 31 and two second filtered water discharge pipelines 32 and then is discharged.
And when the blast furnace tapping is finished and the clearance time of next tapping is reached, backwashing is carried out on the filter tank, and the backwashing in different areas is carried out by observing the conditions in the filter tank by an operator. Backwashing of one zone for about 5 minutes, i.e., water is injected into the filtration tank from the first filtration backwash branch pipe 12 or the second filtration backwash branch pipe 22. If necessary, the two areas can be opened simultaneously to backwash the whole filter tank, namely, water is injected into the filter tank from the first filtering backwash branch pipe 12 and the second filtering backwash branch pipe 22, and the next slag washing is prepared after the backwashing is finished.
For convenience of understanding and description, the absolute positional relationship is used in the present invention for expression, and in this case, the orientation word "left" indicates a left direction in fig. 1, the orientation word "right" indicates a right direction in fig. 1, the orientation word "front" indicates an upper direction in fig. 1, and the orientation word "rear" indicates a lower direction in fig. 1, unless otherwise specified. The present invention has been described in terms of the viewing angle of the reader or user, but the above directional terms should not be construed or interpreted as limiting the scope of the present invention.
The above description is only exemplary of the utility model and should not be taken as limiting the scope of the utility model, so that the utility model is intended to cover all modifications and equivalents of the embodiments, which may be included within the spirit and scope of the utility model. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. A backwashing filter tank is characterized in that a first filtering backwashing area (1) and a second filtering backwashing area (2) are contained in the backwashing filter tank, the first filtering backwashing area (1) and the second filtering backwashing area (2) are adjacently arranged along the horizontal direction, a first filtering backwashing main pipe (11) and a first filtering backwashing branch pipe (12) which are sequentially connected are contained in the first filtering backwashing area (1), a second filtering backwashing main pipe (21) and a second filtering backwashing branch pipe (22) which are sequentially connected are contained in the second filtering backwashing area (2), filtering through holes are respectively formed in the pipe wall of the first filtering backwashing branch pipe (12) and the pipe wall of the second filtering backwashing branch pipe (22), and the first filtering backwashing branch pipe (12) and the second filtering backwashing branch pipe (22) can independently control water inlet and water outlet.
2. The backwash filter tank as defined in claim 1, wherein the first filtration backwash zone (1) and the second filtration backwash zone (2) are arranged adjacent to each other in the front-rear direction, the first filtration backwash zone (1) containing a plurality of first filtration backwash legs (12) arranged at intervals in the front-rear direction, and the second filtration backwash zone (2) containing a plurality of second filtration backwash legs (22) arranged at intervals in the front-rear direction.
3. The backflushing filter tank according to claim 2, characterized in that the first filtering backflushing branch pipe (12) and the second filtering backflushing branch pipe (22) both extend in the left-right direction, and the first filtering backflushing main pipe (11) and the second filtering backflushing main pipe (21) both extend in the front-rear direction.
4. The backflush filter tank according to claim 2, characterized in that the second filter backflush region (2) contains two second filter backflush main pipes (21), the first filter backflush main pipe (11) being located between the two second filter backflush main pipes (21).
5. The backflushing filter tank according to claim 4, characterized in that the first filter backflushing branch pipe (12) and the second filter backflushing branch pipe (22) are located in the same horizontal plane, and the first filter backflushing branch pipe (12) and the second filter backflushing branch pipe (22) are located on the left and right sides of the first filter backflushing main pipe (11).
6. The backflushing filter tank according to claim 5, characterized in that the first filter backflushing branch pipe (12) on the left side of the first filter backflushing main pipe (11) is a mirror image of the first filter backflushing branch pipe (12) on the right side of the first filter backflushing main pipe (11), and the second filter backflushing branch pipe (22) on the left side of the first filter backflushing main pipe (11) is a mirror image of the second filter backflushing branch pipe (22) on the right side of the first filter backflushing main pipe (11).
7. The backflushing filter tank according to claim 1, characterized in that the volume of the first filtering backflushing zone (1) is the same as the volume of the second filtering backflushing zone (2), the first filtering backflushing main pipe (11), the first filtering backflushing branch pipe (12), the second filtering backflushing main pipe (21) and the second filtering backflushing branch pipe (22) are located at the bottom of the backflushing filter tank, and the inlet of the backflushing filter tank corresponds to the first filtering backflushing zone (1).
8. The backflushing filter tank according to claim 1 wherein said backflushing filter tank contains externally a first filtered water discharge line (31), a second filtered water discharge line (32), a first backflushing water supply line (41) and a second backflushing water supply line (42);
the water in the backwashing filter tank can sequentially pass through the first filtering backwashing branch pipe (12) and the first filtering backwashing main pipe (11) and then enter the first filtered water discharge pipeline (31);
the water in the backwashing filter tank can also sequentially pass through the second filtering backwashing branch pipe (22) and the second filtering backwashing main pipe (21) and then enter a second filtered water discharge pipeline (32);
the water in the first backwashing water supply pipeline (41) can sequentially pass through the first filtering backwashing main pipe (11) and the first filtering backwashing branch pipe (12) and then enter the backwashing filter tank;
the water in the second backwash water supply line (42) can enter the backwash filter tank after passing through the second main filtration backwash pipe (21) and the second branch filtration backwash pipe (22) in sequence.
9. The backwashing filter tank of claim 8, wherein the first filtered water discharge line (31) is connected to a rear end of the first filtered backwashing main pipe (11), the second filtered water discharge line (32) is connected to a rear end of the second filtered backwashing main pipe (21), and the first filtered water discharge line (31) and the second filtered water discharge line (32) are provided with a drain control valve group (33).
10. The backflushing filter tank according to claim 8 wherein the first backflushing water supply line (41) is connected to the first filtered water discharge line (31), the second backflushing water supply line (42) is connected to the second filtered water discharge line (32), and a water injection control valve set (43) is provided in each of the first backflushing water supply line (41) and the second backflushing water supply line (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122898708.1U CN216295402U (en) | 2021-11-24 | 2021-11-24 | Back flush filtering ponds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122898708.1U CN216295402U (en) | 2021-11-24 | 2021-11-24 | Back flush filtering ponds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216295402U true CN216295402U (en) | 2022-04-15 |
Family
ID=81122131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122898708.1U Active CN216295402U (en) | 2021-11-24 | 2021-11-24 | Back flush filtering ponds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216295402U (en) |
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2021
- 2021-11-24 CN CN202122898708.1U patent/CN216295402U/en active Active
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