CN204027898U - A kind of water quality online analyzer pretreatment unit - Google Patents
A kind of water quality online analyzer pretreatment unit Download PDFInfo
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- CN204027898U CN204027898U CN201420480935.XU CN201420480935U CN204027898U CN 204027898 U CN204027898 U CN 204027898U CN 201420480935 U CN201420480935 U CN 201420480935U CN 204027898 U CN204027898 U CN 204027898U
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- 238000007789 sealing Methods 0.000 claims description 7
- 239000008399 tap water Substances 0.000 abstract description 6
- 235000020679 tap water Nutrition 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 24
- 238000011010 flushing procedure Methods 0.000 description 20
- 239000012535 impurity Substances 0.000 description 11
- 238000005070 sampling Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004457 water analysis Methods 0.000 description 4
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- 238000010923 batch production Methods 0.000 description 2
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- 238000009835 boiling Methods 0.000 description 2
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- 238000007781 pre-processing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The utility model relates to a kind of pretreatment unit of water quality online analyzer, and solution prior art is easily destroyed sample control valve, easier blocking filter and field of employment and is subject to the problems such as tap water restriction.The utility model comprises water inlet pipe, drainpipe, primary filter, accurate filter, ejector, line branching part, normally closed solenoid valve, the first normally open solenoid valve and the second normally open solenoid valve, water inlet pipe is connected with the 1st mouth of line branching part through primary filter, the 2nd mouth of line branching part is connected with the nozzle of ejector by normally closed solenoid valve, the diffuser casing of ejector is connected with drainpipe, the 3rd mouth of line branching part is connected with the gateway of accurate filter below by the first normally open solenoid valve, the gateway of accurate filter below is also connected with ejector suction chamber by the second normally open solenoid valve.This device can be in real time supplied with the water sample through two-stage filtration to water quality online analyzer, and the difference that can realize two-stage filtration net is cleaned automatically.
Description
Technical field
The utility model relates to the pretreatment unit of the water quality online analyzer in the fields such as environmental monitoring, industrial process waters, belongs to a kind of pre-processing device of water quality online analyzer.
Background technology
The pre-service of existing water quality online analyzer is generally to extract water sample to be measured to pretreatment unit by outer water pump, by pretreatment unit filtering system, filter the various solid impurities in water sample, as mud, suspension etc., then the water sample after filtering is delivered to online analytical instrument.The pretreater of current most of manufacturer production has single filter at least and with flusher, and is all to use tap water flushing filtering net.Also have the pretreater of indivedual producers not design flusher, without the pretreater of flusher, in use filter screen will soon be blocked, cannot normally use at all.
Publication number CN103278358A, open day are the application for a patent for invention of on 09 04th, 2013, the preposition pretreater of a kind of water quality online analyzer is disclosed, comprise inlet and outlet pipe and filtrator, between described inlet pipeline and outlet pipeline, connect ejector, described filter bottom is by pipeline be connected in parallel sample introduction pinch valve and back flush pinch valve, and described pinch valve pipeline connects the suction chamber of ejector.It exists following not enough: one, client, using in the process of this filtering system, while having damage of components, cannot realize quick-replaceable, is also that this pretreater is not suitable for production and application; Two, at sample introduction pinch valve front end without filtrator, the impurity such as the silt of water sample can stop up and even destroy pinch valve, and it cannot normally be worked at all; Three, the bottom of filtrator is plane, and the dirts such as the silt in water sample are easily deposited in base plane, and easily the gateway of blocking filter, also can cause the inaccurate of some composition measurement data.
Publication number CN101430312, open day are the application for a patent for invention of on 05 13rd, 2009, a kind of water quality on-line detection method and system are disclosed, water quality on-line detection method wherein, comprise the following steps: a, sampling procedure, obtain the water sample under test environment, and input pretreatment unit by water inlet pipe; B, pre-treatment step, the water sample flowing out at a certain angle from described water inlet pipe aims at by screen pack, enters in water storage cavity; C, measuring process takes out water sample to be measured from described water storage cavity; Analyze water sample to be measured, thereby obtain the parameter of water sample.The maximum deficiency of its existence: online analytical instrument institute installation region major part does not have tap water, just cannot realize backwash filter by tap water, thereby environment for use is restricted yet.
Utility model content
The purpose of this utility model is: a kind of water quality online analyzer pretreatment unit is provided, solves the easy obstruction of existing water quality online analyzer pretreatment unit and even destroy the technical matterss such as sample introduction pinch valve (solenoid valve), easier blocking filter and field of employment are limited by tap water, manual maintenance amount is large.
Technical solution of the present utility model is:
Water quality online analyzer pretreatment unit, comprise water inlet pipe, drainpipe, accurate filter and ejector, its special character is: described water quality online analyzer pretreatment unit also comprises primary filter, line branching part, normally closed solenoid valve, the first normally open solenoid valve and the second normally open solenoid valve, described water inlet pipe is connected with the 1st mouth of line branching part through primary filter, described line branching part is tee pipe fitting or four-way pipe fitting, the 2nd mouth of line branching part is connected with the nozzle of ejector by normally closed solenoid valve, the diffuser casing of ejector is connected with drainpipe, the 3rd mouth of line branching part is connected with the gateway of accurate filter below by the first normally open solenoid valve, the gateway of accurate filter below is also connected with the suction chamber of ejector by the second normally open solenoid valve.
As a kind of improvement of the present utility model, above-mentioned primary filter is by pass filter, the entrance of by pass filter is connected with water inlet pipe, the straight-through outlet of by pass filter connects ball valve, after the filtration of by pass filter, water sample outlet is connected with the 1st mouth of line branching part, and described by pass filter possesses automatic flushing function.
As the second of the present utility model, improve, above-mentioned accurate filter comprises liquid storing cup, secondary filter net, stopple coupon, run-down pipe and level switch, secondary filter net is positioned at the place, gateway of the lower end of liquid storing cup, in liquid storing cup, accommodate stopple coupon, on liquid storing cup, be fixed with level switch, the top of liquid storing cup is linked with run-down pipe, and the height of run-down pipe is higher than level switch.
As of the present utility model the third, improve, the lower end of above-mentioned stopple coupon is fixed with briquetting, and the density of briquetting is greater than the density of water sample.
As the 4th kind of improvement of the present utility model, above-mentioned briquetting lower surface is to being arranged with n curved baffle, n curved baffle evenly arranges along briquetting lower edge, between adjacent two curved baffles, be formed into the mouth of a river, the lower surface of stopple coupon is higher than the lower surface of curved baffle, and n is more than or equal to 2 natural number.
As the 5th kind of improvement of the present utility model, the latter half of above-mentioned liquid storing cup is back taper.
As the 6th kind of improvement of the present utility model, the gateway of above-mentioned accurate filter below is a tapped cylinder Connection Block that is positioned at liquid storing cup lower end, tapped cylinder Connection Block is connected with the first normally open solenoid valve with the second normally open solenoid valve respectively by pipe adapter, and secondary filter net is arranged between pipe adapter and tapped cylinder Connection Block.
As the 7th kind of improvement of the present utility model, above-mentioned briquetting is fixed on the lower end of stopple coupon by sealing adaptor, be also provided with tapered pad between sealing adaptor and briquetting, and it makes briquetting firmly be fixed on stopple coupon lower end.
As the 8th kind of improvement of the present utility model, when above-mentioned line branching part is four-way pipe fitting, the 4th mouth connecting tap.
As the 9th kind of improvement of the present utility model, the order number of above-mentioned by pass filter is lower than the order number of secondary filter net.Preferably, the order number of primary filter is 40-80 order, and the order number of above-mentioned secondary filter net is 140-180 order.
The course of work of the present utility model is divided three parts: the flushing process of sample introduction process, sampling process, secondary filter net.
Sample introduction process: the water quality online analyzer being connected with pretreatment unit of the present utility model sends instruction and starts outer water pump, close the second normally open solenoid valve, normally closed solenoid valve is in closed condition, the first normally open solenoid valve is in open mode, external pump handle water sample to be detected is sent to the water inlet pipe of pretreatment unit, aqueous sample stream to be detected is through primary filter branches by the road successively again, the first normally open solenoid valve, pipe adapter arrives secondary filter net, after accurate strainer filtering, enter in liquid storing cup, when in liquid storing cup, water sample liquid level arrives the detection height of level switch, level switch sends signal to the control system of water quality online analyzer, signal feedback is to water quality online analyzer, water quality online analyzer device is received after signal, can send the instruction that stops extracting water sample by outside water pump, now stop extracting water sample.
Sampling process: stop extracting after the instruction of water sample when the outside water pump of water quality online analyzer device sends, water quality online analyzer sends instruction to its inner sampling pump, the stopple coupon through in liquid storing cup, is drawn into water quality online analyzer inside water sample.
The flushing process of secondary filter net: when water quality online analyzer stops sampling, close the first normally open solenoid valve, open normally closed solenoid valve, the second normally open solenoid valve is in open mode, the outside water pump of water quality online analyzer sends and extracts water sample instruction simultaneously, now water sample passes through primary filter endlessly successively from water inlet pipe again, normally closed solenoid valve flows to ejector, water sample is when through ejector nozzle, at suction chamber, form negative pressure state, thereby the water sample process secondary filter net that is positioned at liquid storing cup, pipe adapter, the second normally open solenoid valve sucks in ejector, because water sample is rapid flow from top to bottom, the impurity that sticks to secondary filter surface off the net can be rinsed well, thereby play the effect of back flush secondary filter net, the water of backwash filter net passes through the mixing chamber of ejector successively, drainpipe is discharged pretreatment unit.
The utility model has the advantages that:
(1) this device can be supplied with the water sample through two-stage filtration to water quality online analyzer in real time: sample introduction process implementation two-stage filtration, first through the lower primary filter of number of looking over so as to check, filter out thick impurity, then after further filtering by the higher secondary filter net of order number, water sample can reach the request for utilization of water quality online analyzer device, is difficult for stopping up solenoid valve and filtrator.It is simple in structure, is convenient to batch production, and each several part structure is all detachable, and client is in use easy to maintenance.
(2) this device can realize to two-stage filtration net auto-flushing: when primary filter is selected by pass filter, do not need tap water, can realize the auto-flushing to primary filter: aqueous sample stream is through by pass filter, will wash away the screen pack of by pass filter, thereby play the effect of auto-flushing primary filter; And flushing to secondary filter net is the principle of utilizing ejector, utilizes the discharge process of water sample itself, has realized the auto-flushing to secondary filter net.Without manual maintenance, and effectively extended serviceable life of screen pack.Therefore also without the extra water supply pipe of laying, in water treatment system engineering construction, can save the expense of laying water supply pipe.
(3) when the analytical instrument stopple coupon lower end in liquid storing cup is provided with briquetting, water sample is seldom time in liquid storing cup, and because the briquetting with stopple coupon is positioned at liquid storing cup bottom, thereby the stopple coupon of analytical instrument also can be drawn to water sample; Can not make because of the bending of stopple coupon the lower port of stopple coupon be suspended on liquid level, cause the situation of getting less than water sample to occur yet.
(4), when the lower end of briquetting is provided with curved baffle and water inlet, no matter make briquetting which kind of position to be placed in water sample with, stopple coupon all can be got water sample.
(5) when the lower end of cylindricality liquid storing cup is taper, be conducive to the emptying of water sample, and at the bottom of in water sample, impurity can not be deposited on glass.
(6) when secondary filter net is arranged between pipe adapter and tapped cylinder Connection Block, convenient fixing is installed, auto-flushing is effective.
(7) when line branching is four-way pipe fitting and when one outlet connects a water swivel, if needing to extract water sample analyzes separately, while contrasting with online water analysis instrument analysis result, without going to fetch water to water head site again, the tap of directly fetching boiling water can be received the water sample through primary filter.
Accompanying drawing explanation
Fig. 1 be the utility model water quality online analyzer pretreatment unit a kind of structural representation;
Fig. 2 is a kind of structural representation of liquid storing cup;
Fig. 3 is a kind of structural representation of ejector;
Fig. 4 is a kind of structural representation of briquetting;
Fig. 5 is a kind of structural representation of by pass filter;
Wherein: 1-water inlet pipe, 2-by pass filter, 3-ball valve, 4-four-way pipe fitting, 5-water swivel, 6-the first normally open solenoid valve, 7-pipe adapter, 8-level switch, 9-liquid storing cup, 10-stopple coupon, 11-briquetting, 12-secondary filter net, 13-run-down pipe, 14-drainpipe, 15-ejector, 16-the second normally open solenoid valve, 17-normally closed solenoid valve, 18-water inlet, 19-sealing adaptor, 20-nozzle, 21-suction inlet, 22-suction chamber, 23-mixing chamber, 24-diffuser casing, the entrance of 25-by pass filter, 26-bypass screen pack, water sample outlet after 27-filters, the straight-through outlet of 28-by pass filter.
Embodiment
Below in conjunction with accompanying drawing, provide embodiment of the present utility model, be used for further illustrating this technical solution.The water quality online analyzer pretreatment unit of the present embodiment is a kind of through two-stage filtration have the pretreatment unit by self water sample automatic flushing function, and preprocessing process is controlled automatically by being attached thereto the online water analysis instrument connecing.Water sample carries out external sampling by the outer water pump of online water analysis instrument control system, and after filtering through pretreatment unit, water sample is delivered to water quality online analyzer device inside by liquid storing cup 9 and measured, thereby obtains the parameter of surveyed water sample.
Online water analysis instrument pretreatment unit is as shown in Figure 1 formed by connecting by pvc pipe, comprise water inlet pipe 1, drainpipe 14, accurate filter, ejector 15, by pass filter 2, ball valve 3, line branching part, normally closed solenoid valve 17, the first normally open solenoid valve 6 and the second normally open solenoid valve 16, line branching part is four-way pipe fitting.
Water inlet pipe 1 is connected with the entrance 25 of by pass filter, the straight-through outlet 28 of described by pass filter connects ball valve 3, after the filtration of by pass filter 2, water sample outlet 27 is connected with the 1st mouth of four-way pipe fitting 4, the 2nd mouth of four-way pipe fitting 4 is connected with the nozzle of ejector 15 by normally closed solenoid valve 17, the diffuser casing of ejector 15 is connected with drainpipe 14, the 3rd mouth of four-way pipe fitting 4 is connected with the gateway of accurate filter below by the first normally open solenoid valve 6, the gateway of accurate filter below is also connected with the suction chamber of ejector 15 by the second normally open solenoid valve 16, between water inlet pipe 1 and by pass filter 2, by loose joint, be connected.Preferably, the 4th mouth connecting tap 5 of four-way pipe fitting 4, analyzes separately when need extract water sample, in the time of contrasting with water quality online analyzer analysis result, and without going to fetch water to water head site again, tap 5 water samples that can receive through primary filter of directly fetching boiling water; If without this demand, line branching part is selected tee pipe fitting.
A kind of structure of above-mentioned by pass filter as shown in Figure 5, by pass filter relies on the flow wash bypass screen pack of self structure use of advantage water sample, concrete, by pass filter comprises entrance 25, the bypass screen pack 26 of by pass filter, the straight-through outlet 28 of filtering rear water sample outlet 27 and by pass filter, and after bypass screen pack 26 is arranged on and filters, water sample exports 27 places.The straight-through outlet 28 of by pass filter connects ball valve 3, and for regulating the pressure of water inlet pipe water sample, thereby the flow of water samples is flowed out in adjusting water sample outlet 27 from filtering.Water sample enters the entrance 25 of by pass filter through water inlet pipe 1, wash away bypass screen pack 26, part water sample is water sample outlet 27 after filtering after bypass screen pack filters, arrive the 1st mouth of four-way part, and the impurity that is greater than filter screen diameter flows out through the straight-through outlet 28 of by pass filter with part water sample, the ball valve 3 of flowing through, discharges pretreatment unit by pipeline.
Above-mentioned accurate filter comprises liquid storing cup 9, secondary filter net 12, stopple coupon 10, run-down pipe 13 and level switch 8.In liquid storing cup 9, accommodate stopple coupon 10, the middle and upper part of liquid storing cup 9 is fixed with level switch 8, and the top of liquid storing cup 9 is provided with run-down pipe 13, and the height of run-down pipe 13 is higher than level switch 8.
As shown in Figure 2, upper end is cylindrical to a kind of structure of liquid storing cup 9, and lower end is turbination, at the bottom of impurity can not be deposited on glass in water sample, is more conducive to the emptying of water sample.When water sample surpasses level switch 8 present position, control system is sent instruction, and the water pump that is positioned at analytical instrument outside stops extracting water sample.When because unpredictable reason, when water sample exceeds level switch 8 position, water sample can be discharged pretreatment units by run-down pipe 13.
Preferably, accurate filter also comprises briquetting 11, and described briquetting 11 is fixed on the lower end of stopple coupon 10 by sealing adaptor 19, between described sealing adaptor 19 and briquetting 11, is also provided with tapered pad.The material of briquetting 11 is PTFE, density is large and corrosion-resistant, briquetting 11 with stopple coupon 10 is positioned at liquid storing cup 9 bottoms, when the interior water sample of liquid storing cup 9 is seldom time, the stopple coupon 10 of analytical instrument also can be drawn to water sample, also can the lower port of stopple coupon 10 is suspended on liquid level because of the bending of stopple coupon 10.
More excellent, as Fig. 4, the lower surface of briquetting 11 is to being arranged with three curved baffles, three curved baffles are along briquetting 11 lower edge settings, between adjacent two curved baffles, be formed into the mouth of a river 18, the lower surface of stopple coupon 10 is higher than the lower end of curved baffle, and the lower end of curved baffle is not stretched out in the lower surface of stopple coupon 10.The setting of curved baffle and water inlet 18, no matter make briquetting 11 which kind of position to be placed in water sample with, stopple coupon 10 all can be got water sample.
Secondary filter net 12 is positioned at the place, gateway of the lower end of liquid storing cup 9, concrete, the gateway of accurate filter below is a tapped cylinder Connection Block that is positioned at liquid storing cup 9 lower ends, tapped cylinder Connection Block is connected with the first normally open solenoid valve 6 with the second normally open solenoid valve 16 respectively with three-way piece by pipe adapter 7 successively, secondary filter net 12 is arranged between pipe adapter 7 and the tapped cylinder Connection Block of liquid storing cup 9 lower ends, convenient fixing is installed, and auto-flushing is effective.
The core component of secondary filter net auto-flushing is ejector 15.Its structural drawing as shown in Figure 3.Ejector 15 is generally comprised of nozzle 20, suction chamber 22 and diffuser casing 24 3 parts.Its principle is to utilize water sample to spray from nozzle 20 with high speed, swiftly flowing water sample arrives suction chamber 22 and forms negative pressure, the water sample of back flush is inhaled into suction chamber 22 by suction inlet 21, through mixing chamber 23 and diffuser casing 24, and vent pipe 14, be discharged from pretreatment unit, thereby play the effect of flushing filtering net.
The course of work of the present utility model is divided three parts: sample introduction process, sampling process, auto-flushing process.
Sample introduction process: the water quality online analyzer being connected with pretreatment unit of the present utility model sends instruction and starts outer water pump, close the second normally open solenoid valve 16, now, normally closed solenoid valve 17 is in closed condition, the first normally open solenoid valve 6 is in open mode, external pump handle water sample to be detected is sent to the water inlet pipe 1 of pretreatment unit, the aperture of the ball valve 3 that manual adjustments is connected with the straight-through outlet 28 of by pass filter, thereby adjust the flow of water sample after filtering, during water sample process by pass filter 2, the impurity that is greater than bypass screen pack diameter flows out through the straight-through outlet 28 of by pass filter with part water sample, and water sample water sample outlet 27 from the filtration of filtrator after bypass screen pack 26 filters is flowed out, pass through successively again four-way pipe fitting 4, the first normally open solenoid valve 6, pipe adapter 7 arrives secondary filter net 12, after filter screen secondary filter, enter in liquid storing cup 9, when the interior water sample liquid level of liquid storing cup 9 arrives the detection height of level switch 8, level switch 8 sends signal to the control system of water quality online analyzer, signal feedback is to water quality online analyzer, water quality online analyzer device is received after signal, can send the instruction that stops extracting water sample by outside water pump, now stop extracting water sample.When unpredictable situation occurs, when water sample is too much in liquid storing cup 9, can discharge pretreatment unit by overflow vent.Sample introduction process implementation two-stage filtration, first filters out thick impurity through 40-80 object by pass filter, and after then further filtering by 140-180 object secondary filter net 12, water sample can reach the request for utilization of water quality online analyzer.Because it is simple in structure, be convenient to batch production and easy to maintenance in client's use procedure.
Sampling process: stop extracting after the instruction of water sample when the outside water pump of water quality online analyzer device sends, water quality online analyzer sends enabled instruction to its inner sampling pump, thereby through the stopple coupon 10 in liquid storing cup 9, water sample is drawn into water quality online analyzer inside and starts to detect.Because the density of briquetting 11 is greater than the density of water sample, with the briquetting 11 of stopple coupon 10, can sink to the bottom of liquid storing cup 9, when water sample is few in liquid storing cup 9, can not make that the lower port of stopple coupon 10 is curved goes out water sample liquid level, more there will not be situation about extracting less than water sample.
Auto-flushing process comprises the flushing of by pass filter and the flushing of secondary filter net;
The flushing of by pass filter: when water sample flows into by pass filter entrance 25 from water inlet pipe 1, can be washed into bypass screen pack 26, after filtering, water sample is from exporting 27 outflows, and the impurity that is greater than filter screen diameter flows out through the straight-through outlet 28 of by pass filter with part water sample, the ball valve 3 of flowing through, discharges pretreatment unit by pipeline.
The flushing of secondary filter net: when water quality online analyzer stops sampling, now close the first normally open solenoid valve 6, open normally closed solenoid valve 17, the second normally open solenoid valve 16 is in open mode, the outside water pump of water quality online analyzer sends and extracts water sample instruction simultaneously, now water sample is again from water inlet pipe 1 endlessly successively by water sample outlet 27 filtration of by pass filter 2, normally closed solenoid valve 17 flows to ejector 15, water sample is when through ejector 15 nozzle, at suction chamber, form negative pressure, thereby the water sample process secondary filter net 12 that is positioned at liquid storing cup 9, pipe adapter 7, the second normally open solenoid valve sucks in ejector 15, because water sample is rapid flow from top to bottom, the impurity that sticks to secondary filter net 12 lower surfaces can be rinsed well, thereby play the effect of back flush secondary filter net 12, the water of backwash filter net passes through the mixing chamber of ejector 15 successively, drainpipe 14 is discharged pretreatment unit.
The open and close controlling of solenoid valve both can be controlled automatically by the control system of water quality online analyzer, also can be by hand switch manual control, and control procedure those skilled in the art can realize without cost creative work, and therefore not to repeat here.
Claims (10)
1. water quality online analyzer pretreatment unit, comprise water inlet pipe, drainpipe, accurate filter and ejector, it is characterized in that: described water quality online analyzer pretreatment unit also comprises primary filter, line branching part, normally closed solenoid valve, the first normally open solenoid valve and the second normally open solenoid valve, described water inlet pipe is connected with the 1st mouth of line branching part through primary filter, described line branching part is tee pipe fitting or four-way pipe fitting, the 2nd mouth of line branching part is connected with the nozzle of ejector by normally closed solenoid valve, the diffuser casing of ejector is connected with drainpipe, the 3rd mouth of line branching part is connected with the gateway of accurate filter below by the first normally open solenoid valve, the gateway of accurate filter below is also connected with the suction chamber of ejector by the second normally open solenoid valve.
2. water quality online analyzer pretreatment unit according to claim 1, it is characterized in that: described primary filter is by pass filter, the entrance of described by pass filter is connected with water inlet pipe, the straight-through outlet of described by pass filter connects ball valve, and after the filtration of described by pass filter, water sample outlet is connected with the 1st mouth of line branching part.
3. water quality online analyzer pretreatment unit according to claim 1 and 2, it is characterized in that: described accurate filter comprises liquid storing cup, secondary filter net, stopple coupon, run-down pipe and level switch, secondary filter net is positioned at the place, gateway of the lower end of liquid storing cup, in liquid storing cup, accommodate stopple coupon, on liquid storing cup, be fixed with level switch, the top of liquid storing cup is linked with run-down pipe, and the height of run-down pipe is higher than level switch.
4. water quality online analyzer pretreatment unit according to claim 3, is characterized in that: the lower end of described stopple coupon is fixed with briquetting, and the density of briquetting is greater than the density of water sample.
5. water quality online analyzer pretreatment unit according to claim 4, it is characterized in that: described briquetting lower surface is to being arranged with n curved baffle, n curved baffle evenly arranges along briquetting lower edge, between adjacent two curved baffles, be formed into the mouth of a river, the lower surface of stopple coupon is higher than the lower surface of curved baffle, and n is more than or equal to 2 natural number.
6. water quality online analyzer pretreatment unit according to claim 5, is characterized in that: the latter half of described liquid storing cup is back taper.
7. water quality online analyzer pretreatment unit according to claim 6, it is characterized in that: the gateway of described accurate filter below is a tapped cylinder Connection Block that is positioned at liquid storing cup lower end, tapped cylinder Connection Block is connected with the first normally open solenoid valve with the second normally open solenoid valve respectively by pipe adapter, and secondary filter net is arranged between pipe adapter and tapped cylinder Connection Block.
8. water quality online analyzer pretreatment unit according to claim 7, is characterized in that: described briquetting is fixed on the lower end of stopple coupon by sealing adaptor, is also provided with tapered pad between described sealing adaptor and briquetting.
9. water quality online analyzer pretreatment unit according to claim 8, is characterized in that: when described line branching part is four-way pipe fitting, and the 4th mouth connecting tap.
10. water quality online analyzer pretreatment unit according to claim 9, is characterized in that: the order number of described primary filter is 40-80 order, and the order number of described secondary filter net is 140-180 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480935.XU CN204027898U (en) | 2014-08-25 | 2014-08-25 | A kind of water quality online analyzer pretreatment unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480935.XU CN204027898U (en) | 2014-08-25 | 2014-08-25 | A kind of water quality online analyzer pretreatment unit |
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| CN204027898U true CN204027898U (en) | 2014-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132837A (en) * | 2014-08-25 | 2014-11-05 | 烟台东润仪表有限公司 | Pretreating device of online water quality analyzer |
| CN108020443A (en) * | 2016-11-02 | 2018-05-11 | 郑州富铭环保科技有限公司 | A kind of sampling apparatus for water quality online analyzer measure equal proportion mixed sample |
-
2014
- 2014-08-25 CN CN201420480935.XU patent/CN204027898U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132837A (en) * | 2014-08-25 | 2014-11-05 | 烟台东润仪表有限公司 | Pretreating device of online water quality analyzer |
| CN108020443A (en) * | 2016-11-02 | 2018-05-11 | 郑州富铭环保科技有限公司 | A kind of sampling apparatus for water quality online analyzer measure equal proportion mixed sample |
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Address after: 264003 Shandong province Yantai city Laishan District show Road No. 1 Patentee after: SHANDONG DONGRUN INSTRUMENT SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 264003 Shandong province Yantai city Laishan District show Road No. 1 Patentee before: Yantai Dongrun Instrument Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141217 |
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| CX01 | Expiry of patent term |