CN108061680B - Pre-pretreatment device of water quality on-line analyzer and pretreatment method thereof - Google Patents
Pre-pretreatment device of water quality on-line analyzer and pretreatment method thereof Download PDFInfo
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- CN108061680B CN108061680B CN201711224192.4A CN201711224192A CN108061680B CN 108061680 B CN108061680 B CN 108061680B CN 201711224192 A CN201711224192 A CN 201711224192A CN 108061680 B CN108061680 B CN 108061680B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000002203 pretreatment Methods 0.000 title claims description 8
- 238000001914 filtration Methods 0.000 claims abstract description 69
- 238000005070 sampling Methods 0.000 claims abstract description 68
- 239000012535 impurity Substances 0.000 claims abstract description 42
- 238000007790 scraping Methods 0.000 claims abstract description 32
- 238000011010 flushing procedure Methods 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 17
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- 238000011001 backwashing Methods 0.000 claims description 7
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- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
- B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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Abstract
The invention discloses a pre-pretreatment device of a water quality online analyzer in the technical field of water quality online analyzers, which comprises a pretreatment tank, wherein the inner cavity of the pretreatment tank is divided into a left filtering chamber and a right sampling chamber by a partition plate, a back flushing pipe is arranged at the bottom of the filtering chamber, a motor is arranged in the center of the top of the sampling chamber, the right end of the top of the sampling chamber is provided with the sampling pipe, the device is simple to operate, the filtering device is obliquely arranged, impurities such as large suspended matters and silt in a water sample to be detected are conveniently enriched and filtered, the outer wall of a impurity scraping device is attached to the inner wall of the sampling chamber, the impurities adhered to the inner wall of the sampling chamber are conveniently removed, a back flushing pipe is connected with the back flushing pipe, the water sample in the discharged sampling chamber is utilized to flush the inner walls of the filtering holes and the filtering chamber through a rotary spray head, the utilization rate of water resources is improved more effectively.
Description
Technical Field
The invention relates to the technical field of water quality online analyzers, in particular to a pre-pretreatment device of a water quality online analyzer and a pretreatment method of the pre-pretreatment device.
Background
The on-line water quality analyzer is a water quality monitoring tool and can automatically monitor various parameters of water quality in real time. Can provide the requirements of various industries such as tap water supply, medicine, pharmacy, sewage treatment, municipal, electric power and energy, food processing, plastics, automobiles, semiconductors, tires, metallurgy, material processing, mining, printing, petroleum and natural gas, and the like.
In chinese patent No. CN204027898U, a pretreatment device for water quality on-line analyzer is provided, which comprises a water inlet pipe, a water discharge pipe, a primary filter, a precision filter, an ejector, a pipeline branch piece, a normally closed solenoid valve, a first normally open solenoid valve and a second normally open solenoid valve, the water inlet pipe is connected with the 1 st port of the pipeline branch piece through the primary filter, the 2 nd port of the pipeline branch piece is connected with the nozzle of the ejector through the normally closed solenoid valve, the diffusion chamber of the ejector is connected with a water discharge pipe, the 3 rd port of the pipeline branch piece is connected with the inlet and outlet below the precision filter through the first normally open solenoid valve, the inlet and outlet below the precision filter is also connected with the ejector suction chamber through the second normally open solenoid valve, although the device can realize the pretreatment function for water quality, the following disadvantages exist:
1. the pipeline route is formed by splicing a plurality of groups of guide pipes, so that the splicing process is complicated, a large amount of working time is wasted, the efficiency is low, and the practicability is poor;
2. the filtering effect is poor, the number of pipelines is large, and the blockage of the guide pipe is easily caused by the fact that residues in the guide pipe are not removed in time after long-time work;
3. the liquid storage cup is not cleaned for a long time, the inner wall of the liquid storage cup is easily stuck with a large amount of pollutants, the service life of the device is influenced, the sampling water quality is influenced more, the detection data has errors, and therefore the water quality online analyzer pre-pretreatment device and the device pretreatment method are provided.
Disclosure of Invention
The invention aims to provide a pre-pretreatment device of a water quality on-line analyzer and a pretreatment method of the pre-pretreatment device, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a pre-pretreatment device of an online water quality analyzer comprises a pretreatment box, wherein the inner cavity of the pretreatment box is divided into a left filter chamber and a right sampling chamber by a partition plate, a ceramic filter plate is arranged at the bottom of the partition plate, a water inlet pipe is arranged at the top of the filter chamber, a filter device is arranged in the inner cavity of the filter chamber, a sewage discharge pipe matched with the left end of the filter device is arranged on the outer wall of the left side of the filter chamber, a back flushing water pipe is arranged at the bottom of the filter chamber, a water outlet of the back flushing water pipe extends to the bottom of the inner cavity of the filter chamber and is provided with a rotary spray head, a first normally closed electromagnetic valve is arranged at a water inlet of the back flushing water pipe, a motor is arranged in the center of the top of the sampling chamber, a stirring shaft rod is arranged at the output end of the motor, the bottom of the, the horizontal pole is all installed to stirring axostylus axostyle top and bottom outer wall, the other end of horizontal pole with scrape miscellaneous device and be connected, and scrape miscellaneous device's outer wall and the laminating of sampling chamber inner wall, sampling chamber top right-hand member is provided with the sampling pipe, the sampling socle portion is equipped with the filter sleeve, sampling chamber right side outer wall top and bottom are equipped with overflow pipe and drain pipe respectively, be equipped with control flap and back flow on the drain pipe, just the back flow is located the control flap right side, the back flow other end is connected with the back flush water piping, and is provided with second normally closed solenoid valve on the back.
Preferably, the impurity scraping device comprises an arc-shaped scraping blade, scrapers are mounted at two ends of the arc-shaped scraping blade, and a connecting plate matched with the cross rod is arranged on the outer wall of the inner side of the arc-shaped scraping blade.
Preferably, filter equipment includes the filter, and has evenly seted up the filtration pore on the filter, T type buckle is all installed at the filter both ends, and the filter chamber inner wall set up with T type buckle assorted draw-in groove, the filter passes through the buckle draw-in groove and is connected with the filter chamber.
Preferably, rotatory nozzle includes the ponding dish that is connected with the backwash water pipe delivery port, the ponding dish is circular ponding dish, and ponding dish outer wall sets up the distributive pipe that three group's structures are the same according to annular array, and three group's structures are the same the distributive pipe outer wall all is equipped with the same nozzle of three group's structures according to rectangular array.
Preferably, the outer walls of the two ends of the arc-shaped scraping blade are provided with external threads, the inner end of the scraping blade is provided with an internal thread matched with the external threads, and the arc-shaped scraping blade is in threaded connection with the scraping blade.
Preferably, the motor is a variable frequency motor.
Preferably, a pretreatment method based on the device comprises the following steps:
s1: the first normally closed electromagnetic valve, the second normally closed electromagnetic valve and the valve on the blow-off pipe are checked and closed, so that the liquid leakage phenomenon is avoided;
s2: opening a valve on the water inlet pipe to filter a water sample to be detected through a filter chamber, wherein a filter device which forms a forty-five degree angle with the horizontal plane is arranged in an inner cavity of the filter chamber, and the filter device directly blocks larger suspended matters, silt and impurities in the water sample to be detected at the left end of the top part to primarily filter the water sample to be detected;
s3: the preliminarily filtered detection water sample flows into the sampling chamber at the bottom of the inner cavity of the filtering chamber and passes through the ceramic filtering plate, and the ceramic filtering plate filters fine impurities in the water sample to be detected again, so that the detection result is prevented from being influenced;
s4: the step S3 is synchronized by opening a valve on the sewage discharge pipe to discharge the impurities such as larger suspended matters, silt and the like accumulated at the left end of the top of the filtering device in time, so that the filtering device is prevented from being blocked by the impurities, and the filtering efficiency is effectively improved;
s5: the sampling pipe arranged at the right end of the top of the sampling chamber is used for collecting and detecting the clarified water sample, and the bottom of the sampling pipe is provided with the filter sleeve, so that the water sample to be detected is further filtered, and the accuracy of detection data is effectively improved;
s6: the control valve and the second normally closed solenoid valve are opened to discharge a water sample in the sampling chamber, the return pipe is connected with the backwash water pipe, and the water sample in the discharged sampling chamber is used for flushing the filtering holes and the inner wall of the filtering chamber through the rotary spray head, so that the filtering efficiency of the filtering holes is improved, the inner wall of the filtering chamber is effectively prevented from being corroded, and the utilization rate of water resources is more effectively improved;
s7: synchronous with S6 step is starter motor, and the motor drives stirring vane and scrapes miscellaneous device and rotates, and stirring vane stirs the solid matter of deposit in sampling chamber inner chamber bottom to outside the drain pipe discharge preliminary treatment case, scrape miscellaneous device and clear away the impurity of gluing on the sampling chamber inner wall, not only avoid the impurity of gluing on the sampling chamber inner wall to the error that the detection caused, still effectively improved the device' S life.
Compared with the prior art, the invention has the beneficial effects that:
A. the device is simple to operate, the filtering device is connected with the filtering chamber through the buckle clamping groove, and the filtering device is obliquely arranged at forty-five degrees from the horizontal plane, so that impurities such as large suspended matters, silt and the like in a water sample to be detected can be conveniently enriched and filtered;
B. the outer wall of the impurity scraping device is attached to the inner wall of the sampling chamber, so that impurities stuck on the inner wall of the sampling chamber can be conveniently removed, errors caused by the impurities stuck on the inner wall of the sampling chamber to detection can be avoided, and the service life of the device can be effectively prolonged;
C. the back flow is connected with the back flush water piping, utilizes the water sample in the discharge sampling chamber to wash filtration pore and filter chamber inner wall through rotatory nozzle, not only improves the filtration efficiency of filtration pore, has still effectively avoided the filter chamber inner wall to corrode, effectively improves the utilization ratio of water resource more.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the trash removal device of the present invention;
FIG. 3 is a schematic view of the structure of the filtering apparatus of the present invention;
FIG. 4 is a schematic view of a rotary sprayer according to the present invention.
In the figure: 1 pretreatment box, 2 baffle plates, 3 filter chambers, 4 sampling chambers, 5 ceramic filter plates, 6 water inlet pipes, 7 filter devices, 71 filter plates, 72 filter holes, 73T-shaped buckles, 8 blow-off pipes, 9 back flushing pipes, 10 rotating spray heads, 101 water collecting discs, 102 water dividing pipes, 103 nozzles, 11 first normally closed solenoid valves, 12 motors, 13 stirring shaft rods, 14 supporting shaft seats, 15 stirring blades, 16 cross rods, 17 impurity scraping devices, 171 arc scraping blades, 172 connecting plates, 173 scrapers, 18 sampling pipes, 19 filter sleeves, 20 overflow pipes, 21 drain pipes, 22 control valves, 23 return pipes and 24 second normally closed solenoid valves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a pre-pretreatment device of a water quality on-line analyzer comprises a pretreatment tank 1, the inner cavity of the pretreatment tank 1 is divided into a left filter chamber 3 and a right sampling chamber 4 by a clapboard 2, so that the device has compact structure and small occupied space, a ceramic filter plate 5 is arranged at the bottom of the clapboard 2 and is used for filtering fine impurities in a water sample to be detected, a water inlet pipe 6 is arranged at the top of the filter chamber 3, a filter device 7 is arranged in the inner cavity of the filter chamber 3, the filter device 7 is obliquely arranged at forty-five degrees from the horizontal plane and is convenient for enriching larger suspended matters, silt and other impurities in the water sample to be detected, a drain pipe 8 matched with the left end of the filter device 7 is arranged on the outer wall of the left side of the filter chamber 3 and is convenient for discharging the impurities enriched at the left end of the top of the filter device 7, a backwash water pipe 9 is, the filter efficiency of the filter holes 72 is improved, the inner wall of the filter chamber 3 is effectively prevented from being corroded, the utilization rate of water resources is effectively improved, the first normally closed solenoid valve 11 is arranged at the water inlet of the backwash water pipe 9, when the backwash water quantity is insufficient, the first normally closed solenoid valve 11 can be opened, the inner cavity of the filter chamber 3 is washed by connecting the water inlet of the backwash water pipe 9 with a tap water pipe, the motor 12 is arranged in the center of the top of the sampling chamber 4, the motor 12 is a variable frequency motor, the rotating speed of the stirring blades 15 and the impurity scraping device 17 can be conveniently adjusted, the stirring shaft rod 13 is arranged at the output end of the motor 12, the bottom of the stirring shaft rod 13 extends to the inner cavity of the sampling chamber 4 and is connected with the supporting shaft seat 14, the supporting shaft seat 14 is arranged in the center of the bottom of the inner cavity of the sampling chamber 4, the, the other end of the cross rod 16 is connected with the impurity scraping device 17, the outer wall of the impurity scraping device 17 is attached to the inner wall of the sampling chamber 4, so that impurities stuck on the inner wall of the sampling chamber 4 can be conveniently removed, errors caused by the impurities stuck on the inner wall of the sampling chamber 4 to detection can be avoided, the service life of the device can be effectively prolonged, a sampling pipe 18 is arranged at the right end of the top of the sampling chamber 4, a filter sleeve 19 is arranged at the bottom of the sampling pipe 18, a water sample to be detected is further filtered by the filter sleeve 19, the accuracy of detection data is effectively improved, an overflow pipe 20 and a drain pipe 21 are respectively arranged at the top and the bottom of the outer wall of the right side of the sampling chamber 4, a, and the return pipe 23 is located the right side of control valve 22, and the return pipe 23 other end is connected with the back flush water pipe 9, effectively improves the utilization ratio of water resource, and is provided with second normally closed solenoid valve 24 on the return pipe 23.
The impurity scraping device 17 comprises an arc scraping blade 171, scrapers 173 are mounted at two ends of the arc scraping blade 171, external threads are arranged on outer walls of two ends of the arc scraping blade 171, internal threads matched with the external threads are formed in the inner ends of the scrapers 173, the arc scraping blade 171 is in threaded connection with the scrapers 173, maintenance or replacement of the scrapers 173 is facilitated, a connecting plate 172 matched with the cross rod 16 is arranged on the outer wall of the inner side of the arc scraping blade 171, impurities stuck on the inner wall of the sampling chamber 4 can be conveniently removed, errors caused by detection of impurities stuck on the inner wall of the sampling chamber 4 can be avoided, and the service life of the device can be effectively prolonged;
the filtering device 7 comprises a filtering plate 71, filtering holes 72 are uniformly formed in the filtering plate 71, the filtering holes 72 are obliquely formed, impurities are effectively prevented from directly falling down, T-shaped buckles 73 are mounted at two ends of the filtering plate 71, clamping grooves matched with the T-shaped buckles 73 are formed in the inner wall of the filtering chamber 3, the filtering plate 71 is connected with the filtering chamber 3 through the clamping grooves, the filtering plate 71 is convenient to maintain or replace, and the filtering efficiency of the filtering plate 71 is effectively improved;
the rotary sprayer 10 comprises a water accumulation disc 101 connected with the water outlet of the backwashing water pipe 9, the water accumulation disc 101 is a circular water accumulation disc, three groups of water distribution pipes 102 with the same structure are arranged on the outer wall of the water accumulation disc 101 according to an annular array, and three groups of nozzles 103 with the same structure are arranged on the outer walls of the water distribution pipes 102 with the same structure according to a rectangular array, so that uniform spraying is facilitated, and impurities adhered to the inner wall of the filtering chamber 3 are effectively removed;
the pretreatment method based on the device comprises the following steps:
s1: the first normally closed electromagnetic valve 11, the second normally closed electromagnetic valve 24 and the valves on the sewage discharge pipe 8 are checked and closed, so that the liquid leakage phenomenon is avoided;
s2: opening a valve on the water inlet pipe 6 to filter a water sample to be detected through the filter chamber 3, wherein a filter device 7 which forms forty-five degrees with the horizontal plane is arranged in the inner cavity of the filter chamber 3, and the filter device 7 directly blocks larger suspended matters, silt and impurities in the water sample to be detected at the left end of the top part to primarily filter the water sample to be detected;
s3: the preliminarily filtered detection water sample flows into the sampling chamber 4 at the bottom of the inner cavity of the filtering chamber 3 through the ceramic filtering plate 5, and the ceramic filtering plate 5 filters fine impurities in the water sample to be detected again, so that the detection result is prevented from being influenced;
s4: synchronously with the step S3, the valve on the sewage discharge pipe 8 is opened to discharge the impurities such as larger suspended matters, silt and the like accumulated at the left end of the top of the filtering device 7 in time, so that the filtering device 7 is prevented from being blocked by the impurities, and the filtering efficiency is effectively improved;
s5: the sampling pipe 18 arranged at the right end of the top of the sampling chamber 4 is used for collecting and detecting the clarified water sample, and the bottom of the sampling pipe 18 is provided with the filter sleeve 19, so that the water sample to be detected is further filtered, and the accuracy of detection data is effectively improved;
s6: the control valve 22 and the second normally closed solenoid valve 24 are opened to discharge the water sample in the sampling chamber 4, the return pipe 23 is connected with the backwashing water pipe 9, and the water sample discharged from the sampling chamber 4 is used for flushing the filtering holes 72 and the inner wall of the filtering chamber 3 through the rotary spray head 10, so that the filtering efficiency of the filtering holes 72 is improved, the inner wall of the filtering chamber 3 is effectively prevented from being corroded, and the utilization rate of water resources is more effectively improved;
s7: synchronous with the step S6 is that start motor 12, motor 12 drives stirring vane 15 and scrapes miscellaneous device 17 and rotates, and stirring vane 15 stirs the solid matter that deposits in sampling chamber 4 inner chamber bottom to discharge outside pretreatment tank 1 through drain pipe 21, scrape miscellaneous device 17 and clear away the impurity that glues on the sampling chamber 4 inner wall, not only avoid the impurity that glues on the sampling chamber 4 inner wall to the error that the detection caused, still effectively improved the life of the device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a leading preprocessing device of online water quality analyzer, includes pretreatment tank (1), pretreatment tank (1) inner chamber separates for left filter chamber (3) and sampling chamber (4) on right side through baffle (2), its characterized in that: the device is characterized in that a ceramic filter plate (5) is arranged at the bottom of the partition plate (2), a water inlet pipe (6) is arranged at the top of the filter chamber (3), a filter device (7) is arranged in an inner cavity of the filter chamber (3), a sewage discharge pipe (8) matched with the left end of the filter device (7) is arranged on the outer wall of the left side of the filter chamber (3), a backwashing water pipe (9) is arranged at the bottom of the filter chamber (3), a water outlet of the backwashing water pipe (9) extends to the bottom of the inner cavity of the filter chamber (3) and is provided with a rotary sprayer (10), a first normally closed solenoid valve (11) is arranged at a water inlet of the backwashing water pipe (9), a motor (12) is arranged in the center of the top of the sampling chamber (4), a stirring shaft rod (13) is arranged at an output end of the motor (12), the bottom of the stirring shaft rod (13) extends to the, stirring blades (15) are uniformly arranged on the outer wall of the stirring shaft lever (13), cross bars (16) are arranged on the outer walls of the top and the bottom of the stirring shaft lever (13), the other end of each cross bar (16) is connected with a sundry scraping device (17), the outer wall of the impurity scraping device (17) is attached to the inner wall of the sampling chamber (4), the right end of the top of the sampling chamber (4) is provided with a sampling pipe (18), the bottom of the sampling pipe (18) is provided with a filter sleeve (19), the top and the bottom of the outer wall of the right side of the sampling chamber (4) are respectively provided with an overflow pipe (20) and a drain pipe (21), a control valve (22) and a return pipe (23) are arranged on the drain pipe (21), the return pipe (23) is positioned on the right side of the control valve (22), the other end of the return pipe (23) is connected with the back flushing pipe (9), and the return pipe (23) is provided with a second normally closed electromagnetic valve (24); the impurity scraping device (17) comprises an arc-shaped scraping blade (171), scraping blades (173) are mounted at two ends of the arc-shaped scraping blade (171), and a connecting plate block (172) matched with the cross rod (16) is arranged on the outer wall of the inner side of the arc-shaped scraping blade (171);
the outer walls of two ends of the arc-shaped scraping blade (171) are respectively provided with an external thread, the inner end of the scraping blade (173) is provided with an internal thread matched with the external thread, and the arc-shaped scraping blade (171) is connected with the scraping blade (173) through a thread; the filtering device (7) comprises a filtering plate (71), filtering holes (72) are uniformly formed in the filtering plate (71), T-shaped buckles (73) are mounted at two ends of the filtering plate (71), clamping grooves matched with the T-shaped buckles (73) are formed in the inner wall of the filtering chamber (3), and the filtering plate (71) is connected with the filtering chamber (3) through the clamping grooves; the rotary sprayer (10) comprises a water collecting disc (101) connected with a water outlet of the backwashing water pipe (9), the water collecting disc (101) is a circular water collecting disc, three groups of water distribution pipes (102) with the same structure are arranged on the outer wall of the water collecting disc (101) according to an annular array, and three groups of nozzles (103) with the same structure are arranged on the outer wall of each water distribution pipe (102) with the same structure according to a rectangular array;
the pretreatment method based on the device comprises the following steps:
s1: the first normally closed electromagnetic valve (11), the second normally closed electromagnetic valve (24) and the valves on the sewage discharge pipe (8) are checked and closed, so that the liquid leakage phenomenon is avoided;
s2: opening a valve on the water inlet pipe (6) to filter a water sample to be detected through the filter chamber (3), wherein a filter device (7) which forms forty-five degrees with the horizontal plane is arranged in the inner cavity of the filter chamber (3), and the filter device (7) directly blocks impurities such as large suspended matters, silt and the like in the water sample to be detected at the left end of the top part to primarily filter the water sample to be detected;
s3: the preliminarily filtered detection water sample flows into the sampling chamber (4) at the bottom of the inner cavity of the filtering chamber (3) through the ceramic filtering plate (5), and the ceramic filtering plate (5) filters fine impurities in the water sample to be detected again, so that the detection result is prevented from being influenced;
s4: synchronously with the step S3, a valve on the sewage discharge pipe (8) is opened to discharge the impurities such as larger suspended matters, silt and the like accumulated at the left end of the top of the filtering device (7) in time, so that the filtering device (7) is prevented from being blocked by the impurities, and the filtering efficiency is effectively improved;
s5: a sampling pipe (18) arranged at the right end of the top of the sampling chamber (4) is used for collecting and detecting the clarified water sample, and a filter sleeve (19) is arranged at the bottom of the sampling pipe (18) to further filter the water sample to be detected, so that the accuracy of detection data is effectively improved;
s6: the control valve (22) and the second normally closed solenoid valve (24) are opened, a water sample in the sampling chamber (4) is discharged, the return pipe (23) is connected with the backwashing water pipe (9), and the water sample discharged from the sampling chamber (4) is utilized to wash the filtering holes (72) and the inner wall of the filtering chamber (3) through the rotary spray head (10), so that the filtering efficiency of the filtering holes (72) is improved, the inner wall of the filtering chamber (3) is effectively prevented from being corroded, and the utilization rate of water resources is more effectively improved;
s7: synchronous with S6 step is that starter motor (12), motor (12) drive stirring vane (15) and scrape miscellaneous device (17) and rotate, and stirring vane (15) stir the solid matter of deposiing in sampling chamber (4) inner chamber bottom to outside drain pipe (21) discharge preliminary treatment case (1), scrape miscellaneous device (17) and clear away the impurity that glues on sampling chamber (4) inner wall, not only avoid the impurity that glues on sampling chamber (4) inner wall to the error that the detection caused, still effectively improved the life of the device.
2. The pre-pretreatment device of the online water quality analyzer according to claim 1, characterized in that: the motor (12) is a variable frequency motor.
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| CN201711224192.4A CN108061680B (en) | 2017-11-29 | 2017-11-29 | Pre-pretreatment device of water quality on-line analyzer and pretreatment method thereof |
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| CN201711224192.4A CN108061680B (en) | 2017-11-29 | 2017-11-29 | Pre-pretreatment device of water quality on-line analyzer and pretreatment method thereof |
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