CN208667161U - One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow - Google Patents
One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow Download PDFInfo
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- CN208667161U CN208667161U CN201821058693.XU CN201821058693U CN208667161U CN 208667161 U CN208667161 U CN 208667161U CN 201821058693 U CN201821058693 U CN 201821058693U CN 208667161 U CN208667161 U CN 208667161U
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Abstract
The utility model discloses one kind to discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, including multiphase flow pump air dissolving system, gas releasing system and flotation tank, the multiphase flow pump air dissolving system includes multiphase flow pump, gas flowmeter, vacuum meter, intake valve and inlet valve, multiphase flow pump is connected by straight water pipe and water tank or pond, inlet valve, vacuum meter, air inlet pipe and gas flowmeter are installed on straight water pipe, intake valve is arranged in air inlet pipe, and the slightly higher degree of the gas feed of air inlet pipe is higher than the liquid level in water tank or pond；The gas releasing system includes pressure gauge, release and pressure reducing valve, release is connected by the outlet of pressure pipe and multiphase flow pump, pressure gauge is equipped on pressure pipe between release and multiphase flow pump, release is connect by outlet pipe with flotation tank, and outlet pipe is equipped with pressure reducing valve.The molten gas of the utility model is high-efficient；Detachable assembling, easy to clean, release volume is not easy to plug greatly, guarantees effective operation of flotation tank.
Description
Technical field
The utility model relates to one kind to discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, belongs to Water purification technology
Field.
Background technique
In air-dissolving air-float system, air dissolving system is embodiment of the molten gas efficiency in terms of " amount ", and gas releasing system is molten gas system
The embodiment united in terms of " matter ".Existing molten gas release tech is to arrange limbers by internal pipeline water distribution or by flaps,
Or realized by principles such as multiple impact cuttings and be depressured energy dissipating, it then utilizes pipeline to lead to the external world and realizes what molten gas was discharged and was distributed
Process.Existing dissolved air release is easy to happen clogging during practice, and flotation tank air dissolving system is in flotation tank
Internal not easy cleaning, even if there is anti-clogging design, it is also desirable to which high pressure gas is rinsed, and increases mating cost.Simultaneously as
Reason in principle can inevitably result in turbulent flow, to generate air pocket, reduce air flotation effect, and can not be according to specific
The case where carry out the adjusting of height, so needing a kind of new gas releasing system to solve the above problems.
Summary of the invention
Technical problem to be solved in the utility model is easily blocked, is not easy for air bearing release of the existing technology
The defect of cleaning provides a kind of flotation tank external molten gas release system in conjunction with the special air dissolving system of multiphase flow pump.
In order to solve this technical problem, the utility model provides a kind of based on the molten gas release of the pneumatically supported anti-clogging of multiphase flow
System, including multiphase flow pump air dissolving system, gas releasing system and flotation tank, the multiphase flow pump air dissolving system include multiphase flow pump,
Gas flowmeter, vacuum meter, intake valve and inlet valve, multiphase flow pump is connected by straight water pipe and water tank or pond, described
Inlet valve, vacuum meter, air inlet pipe and gas flowmeter are installed on straight water pipe, the intake valve is arranged in air inlet pipe,
The slightly higher degree of the gas feed of air inlet pipe is higher than the liquid level in water tank or pond；The gas releasing system includes pressure gauge, release
And pressure reducing valve, release are connected by the outlet of pressure pipe and multiphase flow pump, the pressure pipe between release and multiphase flow pump
It is equipped with pressure gauge, release is connect by outlet pipe with flotation tank, and the outlet pipe is equipped with pressure reducing valve.
Valve one, valve two and inspection socket are equipped on pressure piping between multiphase flow pump and pressure gauge.
The position for being greater than five times of straight water pipe caliber away from inlet valve is arranged in the air inlet pipe.
The pressure pipe duct length is three times of release caliber, the mounting height 2-2.5m of release.
The liberation port of the flotation tank is located at flotation tank underwater 3.5m.
The release includes shell, upper cylinder, lower cylinder, overflow port and outlet pipe, and the upper cylinder and lower cylinder are arranged in shell
Interior, upper cylinder one end is equipped with inlet opening and water inlet pipe, and lower cylinder one end is equipped with apopore and outlet pipe, and overflow port setting goes out in release
Water end (W.E.)；Pressure air-dissolving water enters release pipeline by water inlet pipe, and water flow is entered the upper cylinder of release by inlet opening, passes through wink
Between be gathered into countless ultramicro air bubbles after decompression, energy dissipating, mass transfer, outgassing, enter outlet pipe by lower cylinder, apopore, pressure value
Adjusting is controlled by overflow port.
The enclosure material is polyethylene or stainless steel.
The utility model has the advantages that the utility model uses multiphase flow pump as air dissolving system, before pump together by gas and recirculation water
Sucking generates vapor-liquid two phases by the special blade wheel structure of multiphase flow pump, during pressure is established in pump and adequately mixes
And reaching saturation, high-speed rotating multi-stage impeller is cut into minute bubbles for the air of sucking is repeated multiple times, and will be small after cutting
Bubble dissolves in water in the hyperbaric environment of pump.The microbubble diameter that saturated dissolved gas water pressure generates when discharging is less than 30
μm, molten gas is high-efficient；Release is placed in outside flotation tank, it is detachable to assemble, it is easy to clean, while the release volume is big
It is not easy to plug, can guarantee effective operation of flotation tank.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram inside the utility model release；
Fig. 3 is the arrangement schematic diagram of the utility model embodiment.
In figure: 1 multiphase flow pump, 2 gas flowmeters, 3 vacuum meters, 4 intake valves, 5 valves one, 6 inspection sockets, 7 valves two, 8
Pressure gauge, 9 releases, 10 pressure reducing valves, 11 inlet valves；12 water inlet pipes, cylinder, 14 inlet openings, 15 shells, 16 lower cylinders, 17 on 13
Overflow port, 18 apopores, 19 outlet pipes, 20 flotation tanks, 21 air inlet pipe, 22 water tanks.
Specific embodiment
The utility model is specifically described with reference to the accompanying drawings and embodiments.
Fig. 1 show the structural schematic diagram of the utility model.
The utility model provides a kind of molten based on the molten gas release system of the pneumatically supported anti-clogging of multiphase flow, including multiphase flow pump
Gas system, gas releasing system and flotation tank 20.
The multiphase flow pump air dissolving system includes multiphase flow pump 1, gas flowmeter 2, vacuum meter 3, intake valve 4 and inlet valve
Door 11.
The multiphase flow pump 1 is connected by straight water pipe and water tank 22, and the water inlet line is as short as possible, is connected using straight pipeline
It is connected to the water inlet flange of multiphase flow pump 1；Inlet valve 11 is installed, for showing entrance negative pressure value on the straight water pipe
Vacuum meter 3, air inlet pipe 21 and gas flowmeter 2, water inlet pipe of the air inlet pipe 21 between multiphase flow pump 1 and inlet valve 11
Duan Shang, 21 position of air inlet pipe are greater than five times of straight water pipe caliber, the gas feed of air inlet pipe 21 at a distance from inlet valve 11
Slightly higher degree is higher than the liquid level of water tank 22；The setting of intake valve 4 adjusts charge flow rate in air inlet pipe 21, and charge flow rate is logical
Gas flowmeter 2 is crossed to be observed.
9 caliber of release is greater than pressure pipe caliber, and pressure pipe duct length is 3 times of release caliber, release
Mounting height 2-2.5m.
The gas releasing system includes pressure gauge 8, release 9 and pressure reducing valve 10, and release 9 passes through pressure pipe and multiphase flow pump
1 outlet connects, and pressure gauge 8, the outlet pressure of multiphase flow pump 1 are equipped on the pressure pipe between release 9 and multiphase flow pump 1
Value is shown that the adjusting of usually >=4.5bar, pressure value are controlled by the overflow port 17 of 9 water outlet of release by pressure gauge 8；
Release 9 is connect by outlet pipe 19 with flotation tank 20, and the outlet pipe 19 is equipped with pressure reducing valve 10.
Valve 1, valve 27 and inspection socket 6 are equipped on pressure piping between multiphase flow pump 1 and pressure gauge 8；Multiphase
Stream pump 1 needs the water in emptying multiphase flow pump 1 to avoid water tank 22 or water by the closing of valve 1, valve 27 after stopping working
Water in pond enters multiphase flow pump 1, and is checked by pipeline of the inspection socket 3 to molten gas release system.
The liberation port of the flotation tank 20 is located at 20 underwater 3.5m of flotation tank.
Fig. 2 show the structural schematic diagram inside the utility model release.
The release 9 includes shell 15, upper cylinder 13, lower cylinder 16, overflow port 17 and outlet pipe 19, and the upper cylinder 13 is under
Cylinder 16 is arranged in shell 15, and upper 13 one end of cylinder is equipped with inlet opening 14 and water inlet pipe 12, and lower 16 one end of cylinder is equipped with 18 He of apopore
Outlet pipe 19, overflow port 17 are arranged in 9 water outlet of release；The shell 15 is the tubing of polyethylene material.
It is made of inside release the bend of two S-shapeds, the pressure air-dissolving water for reaching saturation state passes through release
Water inlet pipe 12 enters in release.Pressure dissolving gas water is during flowing after into release, as the track of S-shaped flows
Multiple impacts are round-trip in release.When pressure is excessive in release, dissolved air water is made in release by 17 overflow of overflow port
Portion's pressure reaches stable state.The water outlet of the lower cylinder 16 of release is equipped with equally distributed apopore, makes containing microbubble
The outflow that dissolved air water can disperse avoids mutually collision merger between bubble, influences molten gas effect.
The installation of release 9 will avoid the bending of pipeline as far as possible, pressure value, pipeline height, length of pipe and gate valve position
Setting need to meet the requirements, to ensure to realize that bubble size and quantity meet pneumatically supported requirement.
Pressure air-dissolving water enters release pipeline by water inlet pipe 12, and water flow enters the upper cylinder of release by inlet opening 14
13, by being gathered into countless ultramicro air bubbles after moment decompression, energy dissipating, mass transfer, outgassing, enter by lower cylinder 16, apopore 18
Water pipe 19 is discharged into flotation tank 20 finally by outlet pipe 19 and pressure reducing valve 10, pressure reducing valve 10 apart from flotation tank 20 away from
From 0.5m is not more than, the pipeline after pressure reducing valve 10 is unsuitable too long, guarantees air flotation effect；Liberation port is located at 20 underwater of flotation tank
3.5m, dissolved air water are fully used, and the residence time is long in water for bubble, guarantee air flotation effect.Outlet pipeline length not surpass
2m is crossed, because too long be easy to cause of the length of outlet pipeline discharges in advance, since bubble size is excessive when bubble sticks with wadding grain
And crash wadding grain；Pipeline is too short to be easy to cause bubble not release sufficiently when sticking with wadding grain.
Working principle of the utility model is:
Usual pressure air-dissolving air-float air is dissolved in water, need equably could expand in water by the release bubble of release
It dissipates.Multiphase flow pump air-dissolving air-float, air and water pass through the rotation of multiphase flow pump impeller, and gas is deposited in a liquid with disperse state
The main function of the release of multiphase flow pump is the pressure value for stablizing air dissolving system.The release of the utility model research,
The advantages of common release is combined on the basis of steady pressure enhances the stability and reliability of dissolved air water, and release quantity increases,
Bubble dispersion is more uniform, and the adhesion effect of bubble and wadding body is more preferable, enhances the removal effect of pollutant, while energy-saving effect
Significantly.
The bubble size that multiphase flow pump air-dissolving air-float system generates is less than usual pressure air-dissolving air-float system, according to pneumatically supported
Working principle, in the case that the amount of gas is certain, the bubble size of generation is smaller, and the quantity of bubble is more, and specific surface area is bigger,
Possessed free interface can be bigger, and microbubble and wadding grain stick by collision, agglomerate the probability for forming big flocs with gas
It is more.The size of microbubble is also not the smaller the better, needs to control preferable in 10~100 μm of purifying water effects.
Bubble diameter is smaller, and the contact angle of bubble and impurity is smaller, and in balance, interfacial tension is in equilibrium state, it may be assumed that
σ sg=σ lgcos θ+σ sl
Cos θ=(σ sg- σ sl)/σ lg
In conjunction with young's formula (Young Equation): γ SV=γ SL+ γ LV × cos θ e analyzes contact angle and all circles
Relationship between the tension of face:
1) when θ=0, complete wetting；
2) when 90 ° of θ ﹤, partially wetted or wetting；
It 3) is line of demarcation whether wetting when θ=90 °；
4) nonwetting when 90 ° of θ ﹥；
It draws a conclusion, the smaller solid of contact angle and bubble stick closer.
According to Gaudin model, the collision formula obtained is
EC-GA--- collision efficiency；
db--- bubble diameter；
df--- wadding body diameter；
Reflect that, in the case where wadding body diameter is constant, the smaller collision efficiency of bubble diameter is higher in a certain range.
In conclusion this dissolved-gas air-flotation system can generate 30 μm of bubble, bubble diameter is generated less than common air-dissolving air-float
Bubble.The collision efficiency of the diameter of bubble more minute bubbles and particle is higher, the work for being attached on interfacial tension of bubble and wadding body
What is sticked under is closer.
Fig. 3 show the arrangement schematic diagram of the utility model embodiment.
Embodiment
Certain pilot-scale 5m3/ h, flotation tank specification are 1.2m × 0.8m × 4.5m, opened type, flotation region area 1.2m
× 0.8m=1.0m2.The arrangement form of release takes every row three, in the form that flotation tank two sides are arranged symmetrically such as Fig. 3.
Under this condition, the airfloat equipment is run under conditions of floatation reflux is than 18%.Test result such as following table.
| Project | Turbidity (NTU) | CODMn(mg/L) | TOC(mg/L) | Algae sum (a/L) |
| Water inlet | 3.39 | 3.97 | 4.23 | 4.3×107 |
| Water outlet | 1.45 | 2.76 | 3.10 | 4.4×106 |
| Removal rate (%) | 57.2 | 30.5 | 26.6 | 89.8 |
The result shows that whole system normal operation, effluent quality is good, the release, than the release of independent straight tube
Bubble size is smaller, and number of bubbles is more.
Compared with prior art, the air-dissolving apparatus such as dissolving are omitted in the utility model, using multiphase flow pump as molten gas
Gas and recirculation water are sucked together before pump, by the special blade wheel structure of multiphase flow pump, pressure are established in pump by system
Vapor-liquid two phases are generated in the process and adequately mix and reach saturation, and high-speed rotating multi-stage impeller is repeatedly more by the air of sucking
It is secondary to be cut into minute bubbles, and the minute bubbles after cutting are dissolved in water in the hyperbaric environment of pump.Saturated dissolved gas hydraulic pressure
For the microbubble diameter that power generates when discharging less than 30 μm, molten gas is high-efficient；The utility model release is to be exclusively used in multiphase flow pump
The release of air dissolving system enhances the stability and reliability of dissolved air water, and release quantity increases, while energy-saving effect is significant, should
Release is placed in outside flotation tank, detachable to assemble, easy to clean, while the release volume is not easy to plug greatly, Neng Goubao
Demonstrate,prove effective operation of flotation tank.
The utility model the embodiment above, is merely illustrative, be not it is only, it is all in the scope of the utility model
Or the change in equivalent the scope of the utility model is surrounded by the utility model.
Claims (7)
1. one kind discharges system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: including multiphase flow pump air dissolving system,
Gas releasing system and flotation tank (20), the multiphase flow pump air dissolving system include multiphase flow pump (1), gas flowmeter (2), vacuum meter
(3), intake valve (4) and inlet valve (11), multiphase flow pump (1) is connected by straight water pipe and water tank (22) or pond, described
Inlet valve (11), vacuum meter (3), air inlet pipe (21) and gas flowmeter (2), the intake valve are installed on straight water pipe
(4) it is arranged on air inlet pipe (21), the height of the gas feed of air inlet pipe (21) is slightly above the liquid level of water tank (22)；It is described
Gas releasing system includes pressure gauge (8), release (9) and pressure reducing valve (10), and release (9) passes through pressure pipe and multiphase flow pump (1)
Outlet connection, equipped with pressure gauge (8) on the pressure pipe between release (9) and multiphase flow pump (1), release (9) passes through
Outlet pipe (19) is connect with flotation tank (20), and the outlet pipe (19) is equipped with pressure reducing valve (10).
2. according to claim 1 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: in multiphase
Pressure piping between stream pump (1) and pressure gauge (8) is equipped with valve one (5), valve two (7) and inspection socket (6).
3. according to claim 1 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: it is described into
Tracheae (21) setting is in the position for being greater than five times of straight water pipe caliber away from inlet valve (11).
4. according to claim 1 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: the pressure
Solenoid duct length is three times of release caliber, the mounting height 2-2.5m of release (9).
5. according to claim 1 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: the gas
The liberation port of floating pond (20) is located at flotation tank (20) underwater 3.5m.
6. according to claim 1-5 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, feature exists
On: the release (9) includes shell (15), upper cylinder (13), lower cylinder (16), overflow port (17) and outlet pipe (19), is described
In shell (15), upper cylinder (13) one end is equipped with inlet opening (14) and water inlet pipe (12), lower cylinder for cylinder (13) and lower cylinder (16) setting
(16) one end is equipped with apopore (18) and outlet pipe (19), and overflow port (17) is arranged in release (9) water outlet.
7. according to claim 6 discharge system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow, it is characterised in that: described outer
Shell (15) material is polyethylene or stainless steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058693.XU CN208667161U (en) | 2018-07-05 | 2018-07-05 | One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058693.XU CN208667161U (en) | 2018-07-05 | 2018-07-05 | One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585096A (en) * | 2018-07-05 | 2018-09-28 | 山东省城市供排水水质监测中心 | One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow |
| CN110280156A (en) * | 2019-06-26 | 2019-09-27 | 中实泰广(北京)环保科技有限公司 | Anti-blocking gas-liquid discharges system and anti-blocking gas-liquid method for releasing |
-
2018
- 2018-07-05 CN CN201821058693.XU patent/CN208667161U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585096A (en) * | 2018-07-05 | 2018-09-28 | 山东省城市供排水水质监测中心 | One kind discharging system based on the molten gas of the pneumatically supported anti-clogging of multiphase flow |
| CN110280156A (en) * | 2019-06-26 | 2019-09-27 | 中实泰广(北京)环保科技有限公司 | Anti-blocking gas-liquid discharges system and anti-blocking gas-liquid method for releasing |
| CN110280156B (en) * | 2019-06-26 | 2022-03-08 | 中实泰广(北京)环保科技有限公司 | Anti-blocking gas-liquid release system and anti-blocking gas-liquid release method |
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