CN108802418B - Filter tank back flush tester and test system - Google Patents
Filter tank back flush tester and test system Download PDFInfo
- Publication number
- CN108802418B CN108802418B CN201810965707.4A CN201810965707A CN108802418B CN 108802418 B CN108802418 B CN 108802418B CN 201810965707 A CN201810965707 A CN 201810965707A CN 108802418 B CN108802418 B CN 108802418B
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- filter tank
- step counting
- air
- filter
- processor
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000011010 flushing procedure Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 24
- 230000002146 bilateral effect Effects 0.000 claims description 16
- 238000010998 test method Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000005452 bending Methods 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a filter tank back flushing tester, which is fixed on a bracket above a filter tank, wherein the tester is provided with an air collecting cavity, an air pipe and flow rate testing ports from bottom to top, the air collecting cavities are arranged in parallel, the bottom end of each air collecting cavity is opened and inserted below the liquid level of the filter tank, the top end of each air collecting cavity is communicated with an independent flow rate testing port through an independent air pipe, each flow rate testing port is internally provided with a flow rate detector, and the flow rate testing port is provided with an air outlet for discharging air collected by the air collecting cavity. The invention has the advantages that the back flushing can be reliably monitored, accurate data parameters can be obtained, the back flushing pressure can be conveniently adjusted in real time by staff, the back flushing quality can be ensured, and the filtering effect of the filtering tank can be indirectly improved.
Description
Technical Field
The invention relates to the field of water treatment, in particular to test equipment for a back flushing link of a filter tank in water treatment.
Background
The modern water plant basically adopts a filter tank filtration technology to treat water, a filter port is arranged at the bottom of the filter tank, the filter port is usually connected with a back flushing pipeline, a filter material is paved above the filter port, the filter material can absorb and retain impurities in the water, the filter tank can stop filtering after a period of use, water is supplied to the filter port through the back flushing pipeline, and the filter tank sprays water from bottom to top for back flushing, so that the impurities absorbed in the filter material can be flushed.
At present, no special testing equipment is used for back flushing, and the quality and effect of the back flushing cannot be detected, so that the water supply pressure of the back flushing at present is determined according to experience, the impact force is too large or the filter material is lost, impurities in the filter material cannot be flushed when the impact force is too small, and the experience obviously cannot accurately control the back flushing.
Disclosure of Invention
The invention aims to solve the technical problem of realizing an instrument capable of accurately monitoring and testing the backwash condition of a filter tank.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the filter tank back flush tester, the tester is fixed on the support of filter tank top, the tester is equipped with gas collecting chamber, trachea, velocity of flow test mouth from bottom to top, the gas collecting chamber is equipped with a plurality ofly side by side, every the bottom opening of gas collecting chamber inserts the liquid level below the filter tank, every gas collecting chamber top is through independent trachea intercommunication an independent velocity of flow test mouth, every all be equipped with a velocity of flow detector in the velocity of flow test mouth, and the velocity of flow test mouth is equipped with the gaseous exhaust gas outlet that gathers the gas collecting chamber.
Each flow rate detector transmits the acquired parameters to a processor, and the processor stores and/or transmits the acquired data to a display screen for display.
The width of the gas collection cavities arranged side by side is slightly smaller than that of the filter tank, the upper parts of the gas collection cavities are communicated with the air pipes through air outlets, and the air outlets are of structures with diameters gradually reduced from the gas collection cavities to the air pipes.
The flow velocity testing port is of a horizontally arranged tubular structure, the flow velocity detector comprises a fin and a stress sensor, the fin is fixed above the inner wall of the flow velocity testing port and extends vertically downwards, the stress sensor is fixed on the fin, and the stress sensor outputs a fin deformation parameter value processor.
A filter back flush test system comprises a bracket and a filter back flush tester;
the support is provided with bilateral step counting rails fixed on two sides of the filter tank, the truss sliding group is positioned above the filter tank and supported on the bilateral step counting rails through step counting wheels, a power unit for driving the step counting wheels to rotate is fixed on the truss sliding group, and the filter tank back flushing tester is suspended below the truss sliding group.
The filter tank backwashing tester is characterized in that a lifting mechanism moving in the vertical direction is fixed on the truss sliding group, and the filter tank backwashing tester is fixed on the lifting mechanism of the truss sliding group.
Along the collection chamber is fixed with sonar equipment, sonar equipment gathers distance data to the treater apart from the filter material, treater output drive signal is to elevating system and power unit.
The test method based on the filter tank back flushing test system comprises the following steps:
in the initial state, the step counting wheel support truss sliding group is positioned at one end of the filter tank, the lifting mechanism is in the ascending state, and the sonar equipment and the air collecting cavity are positioned above the liquid level of the filter tank;
before back flushing, the lifting mechanism descends, the sonar equipment and the air collecting cavity are arranged below the liquid level of the filter tank, the step counting wheel is driven to walk along the bilateral step counting track to enable the truss sliding group to walk to the other end of the filter tank, the step counting wheel walks while starting the sonar equipment, and the acquired height information of the filter material is conveyed to the processor;
the back flushing is started, the step counting wheel is driven to walk along the bilateral step counting track to enable the truss sliding group to walk to the initial end of the filter tank, the step counting wheel walks while the flow velocity detector conveys the acquired flow velocity information to the processor;
after the back flushing is finished, driving a step counting wheel to walk along a bilateral step counting track to enable the truss sliding group to walk to the other end of the filter tank, enabling the step counting wheel to walk while starting sonar equipment, and conveying the acquired height information of the filter material to a processor again;
and finally, lifting the lifting mechanism to lift the sonar equipment and the air collecting cavity to the position above the liquid level of the filter tank.
When the sonar equipment works, collecting the filter material height information of the area below the filter truss sliding group, and when the sonar equipment conveys the obtained filter material height information to the processor, attaching the position information of the current step counting wheel;
when the flow velocity detector works, the average value of the flow velocity in the set time is transmitted to the processor, and meanwhile, the position information of the current step counting wheel is attached.
The invention has the advantages that the back flushing can be reliably monitored, accurate data parameters can be obtained, the back flushing pressure can be conveniently adjusted in real time by staff, the back flushing quality can be ensured, and the filtering effect of the filtering tank can be indirectly improved.
Drawings
The contents of each drawing in the specification of the present invention are briefly described as follows:
FIG. 1 is a schematic diagram of a filter tank backwash tester;
FIG. 2 is a schematic diagram of a structural support of a backwash testing system of the filter tank;
FIG. 3 is a schematic diagram of a flow rate detector;
the arrow direction in fig. 1 and 3 is the airflow direction;
the labels in the above figures are: 1. truss slip groups; 2. a filter tank; 3. bilateral step counting tracks; 4. a step counting wheel; 5. a lifting mechanism; 6. a flow rate detector; 7. a flow rate test port; 8. an air pipe; 9. an air outlet; 10. an air collection cavity; 11. a fin; 12. stress sensor.
Detailed Description
The invention converts back flushing bubbles into air flow during blasting, collects the air in the bubbles into continuous air flow through the bubble collecting device, can detect the back flushing condition of the detection surface by detecting the air flow state, and can detect the back flushing state of the whole filter tank 2 by driving the bubble collector to move through the sliding table moving device. Finally, the cleaning condition of the whole filter tank 2 can be obtained through microcomputer processing.
Working principle of the back flush tester of the filter tank 2: when the filter tank 2 is backwashed, bubbles upwards from the bottom of the tank reach the water surface and then burst, gas in the bubbles is collected by a bubble collector, the gas collecting end of the bubble collector is placed under water, a plurality of bubbles can generate air flow when burst in the collector, the air flows along a pipeline through hydraulic pressure gas, and the flowing state of the air flow is detected through a detection chamber, so that the flushing strength and the flushing effect of the current area are known, and the bubble collector is combined by a plurality of collecting cavities and can simultaneously measure the flushing effects of single points and multiple points.
As shown in FIG. 1, the backwash tester for the filter tank 2 is fixed on a bracket above the filter tank 2, and a line scanning mode can be adopted, namely a plurality of gas collecting cavities 10 are arranged side by side, the quantity of the gas collecting cavities 10 is determined according to the width of the filter tank 2, the width of the gas collecting cavities 10 arranged side by side is slightly smaller than the width of the filter tank 2, and interference with the tank wall is avoided when the backwash tester scans along the filter tank 2. The tester is provided with an air collecting cavity 10, an air pipe 8 and a flow velocity testing port 7 from bottom to top, each air collecting cavity 10 is provided with an independent air pipe 8 and a flow velocity testing port 7, one set of air collecting cavity 10, the air pipe 8 and the flow velocity testing port 7 form a pipeline structure which is penetrated up and down, and in order to ensure the measurement efficiency, the inner diameter of the air pipe 8 is smaller than the air collecting cavity 10, and the inner diameter of the flow velocity testing port 7 is smaller than the air pipe 8, namely the impact force of air flow formed by collecting air bubbles can be improved. The upper part of the gas collection cavity 10 is communicated with the gas pipe 8 through the gas outlet 9, and the gas outlet 9 is of a structure with the caliber gradually reduced from the gas collection cavity 10 to the gas pipe 8, so that the flow rate of the collected gas can be improved.
Each flow rate test port 7 is internally provided with a flow rate detector 6, the flow rate test port 7 is provided with a gas outlet 9 for discharging gas collected by the gas collecting cavity 10, the flow rate detector 6 is a device for obtaining the strength/force/pressure of passing gas flow, for example, a mechanism shown in fig. 3 can be adopted, the flow rate test port 7 is of a horizontally arranged tubular structure, the flow rate detector 6 comprises a fin 11 and a stress sensor 12, the fin 11 is fixed above the inner wall of the flow rate test port 7 and extends vertically downwards, the bottom of the fin 11 is not contacted with the bottom of the inner wall of the flow rate test port 7, a gap for bending the fin 11 is formed, the fin 11 is vertically arranged, bending of the fin 11 due to gravity can be avoided, conversion difficulty is reduced, the stress sensor 12 is fixed on the fin 11, the stress sensor 12 senses the bending degree of the fin 11, when the gas flow is large, the bending degree of the fin 11 is large, when the gas flow is small, and the stress sensor 12 outputs a deformation parameter value processor of the fin 11.
Each flow velocity detector 6 conveys the collected parameters to the processor, and then the back flushing parameters of different areas on a line are collected, and when the back flushing tester of the filter tank 2 moves along the filter tank 2, the flushing uniformity of the whole tank and the flushing strength of each position can be tested. The processor stores and/or transmits the acquired data to a display screen for display.
Based on the back flush tester of the filter tank 2, a back flush test system of the filter tank 2 can be designed, and the system comprises a bracket and the back flush tester of the filter tank 2. As shown in fig. 2, the support is provided with bilateral step counting rails 3 fixed on two sides of the filter tank 2, the truss sliding group 1 is positioned above the filter tank 2 and is supported on the bilateral step counting rails 3 through step counting wheels 4, and the step counting wheels 4 can accurately walk to acquire position (coordinate) information of a backwashing tester of the filter tank 2. The truss sliding group 1 is fixedly provided with a power unit for driving the step counting wheel 4 to rotate, the power unit can adopt a gear box connected with a stepping motor, and the filter tank 2 backwash tester is suspended below the truss sliding group 1.
The side of the bubble collector is provided with a depth measuring device, when the flushing is completed, the whole pool can be scanned under the drive of the sliding table, the laying uniformity of the filter material can be known under microcomputer processing, meanwhile, the depth measuring device is used for scanning before and after flushing to obtain the height difference before and after flushing, and the expansion rate of the filter material can be obtained through numerical calculation. Swelling ratio = (post-rinse height-pre-rinse height)/pre-rinse height.
The depth measuring device can adopt sonar equipment, the sonar equipment is fixed along the air collecting cavity 10, the distance between filter materials in the area below the truss sliding group 1 is adopted, when the sonar equipment works, distance data of the distance between the filter materials are collected to the processor, and the processor outputs driving signals to the lifting mechanism 5 and the power unit at the same time to coordinate the work of the whole filter tank 2 back flushing test system.
In order to prevent the normal operation of the filter tank 2 from being influenced by the back flushing test system of the filter tank 2, the lifting mechanism 5 moving in the vertical direction is fixed on the truss sliding group 1, and the back flushing test instrument of the filter tank 2 is fixed on the lifting mechanism 5 of the truss sliding group 1, so that the back flushing test instrument of the filter tank 2 can be lifted when the filter tank 2 normally operates, the back flushing test instrument of the filter tank 2 can be prevented from influencing the operation, and the corrosion of sewage to the back flushing test instrument of the filter tank 2 can be prevented.
The test method based on the filter tank 2 back flushing test system comprises the following steps:
in the initial state, the step counting wheel 4 supports the truss sliding group 1 to be positioned at one end of the filter tank 2, the lifting mechanism 5 is in the ascending state, and the sonar equipment and the air collecting chamber 10 are positioned above the liquid level of the filter tank 2;
before back flushing, the lifting mechanism 5 descends, the sonar equipment and the air collecting cavity 10 are arranged below the liquid level of the filter tank 2, the step counting wheel 4 is driven to walk along the bilateral step counting track 3 to enable the truss sliding group 1 to walk to the other end of the filter tank 2, the step counting wheel 4 walks and simultaneously starts the sonar equipment, and the acquired height information of the filter material is conveyed to the processor;
the back flushing is started, the step counting wheel 4 is driven to walk along the bilateral step counting track 3 to enable the truss sliding group 1 to walk to the initial end of the filter tank 2, the step counting wheel 4 walks and meanwhile the flow velocity detector 6 conveys the acquired flow velocity information to the processor;
after the back flushing is finished, driving a step counting wheel 4 to walk along a bilateral step counting track 3 to enable the truss sliding group 1 to walk to the other end of the filter tank 2, enabling the step counting wheel 4 to walk and simultaneously starting sonar equipment, and conveying the acquired filter material height information to a processor again;
finally, the lifting mechanism 5 ascends to lift the sonar equipment and the air collecting cavity 10 to the position above the liquid level of the filter tank 2.
When the sonar equipment works, collecting the filter material height information of the area below the truss sliding group 1 of the filter tank 2, and when the sonar equipment conveys the obtained filter material height information to the processor, attaching the position information of the current step counting wheel 4;
when the flow rate detector 6 works, the average value of the flow rate in the set time is transmitted to the processor, and meanwhile, the position information of the current step counting wheel 4 is attached.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the invention are adopted, all within the scope of the invention.
Claims (6)
1. A back flush test system of a filter tank is characterized in that: the system comprises a bracket and a filter tank back flushing tester;
the filter tank back flushing tester is fixed on a support above the filter tank, the tester is provided with an air collecting cavity, an air pipe and flow rate testing ports from bottom to top, a plurality of air collecting cavities are arranged side by side, the bottom end of each air collecting cavity is opened and inserted below the liquid level of the filter tank, the top end of each air collecting cavity is communicated with an independent flow rate testing port through an independent air pipe, each flow rate testing port is internally provided with a flow rate detector, and the flow rate testing port is provided with an air outlet for discharging air collected by the air collecting cavity;
the support is provided with bilateral step counting rails fixed on two sides of the filter tank, the truss sliding group is positioned above the filter tank and supported on the bilateral step counting rails through step counting wheels, a power unit for driving the step counting wheels to rotate is fixed on the truss sliding group, and the filter tank back flushing tester is suspended below the truss sliding group;
the filter tank back flushing tester is fixed on the lifting mechanism of the truss sliding group;
a sonar device is fixed along the air collection cavity, the sonar device collects distance data of distance from the filter material to a processor, and the processor outputs a driving signal to a lifting mechanism and a power unit;
when the sonar equipment works, distance data of distance from the filter material is collected to the processor, and the processor outputs driving signals to the lifting mechanism and the power unit at the same time to coordinate the work of the whole filter tank back flushing test system.
2. The filter backflushing test system according to claim 1, wherein: each flow rate detector transmits the acquired parameters to a processor, and the processor stores and/or transmits the acquired data to a display screen for display.
3. A filter backflushing test system according to claim 1 or 2, wherein: the width of the gas collection cavities arranged side by side is slightly smaller than that of the filter tank, the upper parts of the gas collection cavities are communicated with the air pipes through air outlets, and the air outlets are of structures with diameters gradually reduced from the gas collection cavities to the air pipes.
4. A filter backflushing test system according to claim 3 wherein: the flow velocity testing port is of a horizontally arranged tubular structure, the flow velocity detector comprises a fin and a stress sensor, the fin is fixed above the inner wall of the flow velocity testing port and extends vertically downwards, the stress sensor is fixed on the fin, and the stress sensor outputs a fin deformation parameter value processor.
5. A test method based on the filter tank backwash test system according to any one of claims 1 to 4, characterized in that:
in the initial state, the step counting wheel support truss sliding group is positioned at one end of the filter tank, the lifting mechanism is in the ascending state, and the sonar equipment and the air collecting cavity are positioned above the liquid level of the filter tank;
before back flushing, the lifting mechanism descends, the sonar equipment and the air collecting cavity are arranged below the liquid level of the filter tank, the step counting wheel is driven to walk along the bilateral step counting track to enable the truss sliding group to move to the other end of the filter tank, the step counting wheel walks while starting the sonar equipment, and the acquired height information of the filter material is conveyed to the processor;
the back flushing is started, the step counting wheel is driven to walk along the bilateral step counting track to enable the truss sliding group to move to the initial end of the filter tank, the step counting wheel walks while the flow velocity detector conveys the acquired flow velocity information to the processor;
after the back flushing is finished, driving a step counting wheel to walk along a bilateral step counting track to enable the truss sliding group to move to the other end of the filter tank, enabling the step counting wheel to walk while starting sonar equipment, and conveying the acquired height information of the filter material to a processor again;
and finally, lifting the lifting mechanism to lift the sonar equipment and the air collecting cavity to the position above the liquid level of the filter tank.
6. The test method according to claim 5, wherein:
when the sonar equipment works, collecting the filter material height information of the area below the filter truss sliding group, and when the sonar equipment conveys the obtained filter material height information to the processor, attaching the position information of the current step counting wheel;
when the flow velocity detector works, the average value of the flow velocity in the set time is transmitted to the processor, and meanwhile, the position information of the current step counting wheel is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965707.4A CN108802418B (en) | 2018-08-23 | 2018-08-23 | Filter tank back flush tester and test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965707.4A CN108802418B (en) | 2018-08-23 | 2018-08-23 | Filter tank back flush tester and test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108802418A CN108802418A (en) | 2018-11-13 |
| CN108802418B true CN108802418B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810965707.4A Active CN108802418B (en) | 2018-08-23 | 2018-08-23 | Filter tank back flush tester and test system |
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| CN (1) | CN108802418B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947228B (en) * | 2019-11-29 | 2021-08-03 | 烟台金正环保科技有限公司 | Anti-fouling water inlet and return method for filter |
| CN111579814A (en) * | 2020-04-10 | 2020-08-25 | 清华大学 | Method and system for measuring filtering speed of filter tank by using ultrasonic liquid level meter |
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| Publication number | Publication date |
|---|---|
| CN108802418A (en) | 2018-11-13 |
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