CN110141889A - Vacuum defoaming equipment and debubbling method for high viscosity liquid - Google Patents
Vacuum defoaming equipment and debubbling method for high viscosity liquid Download PDFInfo
- Publication number
- CN110141889A CN110141889A CN201910437708.6A CN201910437708A CN110141889A CN 110141889 A CN110141889 A CN 110141889A CN 201910437708 A CN201910437708 A CN 201910437708A CN 110141889 A CN110141889 A CN 110141889A
- Authority
- CN
- China
- Prior art keywords
- defoaming
- high viscosity
- tank body
- viscosity liquid
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 10
- 239000012263 liquid product Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000009974 thixotropic effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000003254 anti-foaming effect Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920005575 poly(amic acid) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003196 chaotropic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a kind of vacuum defoaming equipments and debubbling method for high viscosity liquid, the wherein spiral plate of vacuum defoaming equipment setting both direction opposite deaeration baffle and a large area, high viscosity liquid is set to be in the state of film fluid layer always, its surface area and surface tension are considerably increased, bubble can be effectively eliminated；The low speed rotation of spiral plate accelerates the film forming speed and flowing velocity of high viscosity liquid, while the rotational shear generated can also eliminate bubble.The application debubbling method uses multiple defoaming mode, and the defoaming of efficient stable is carried out in conjunction with certain vacuum degree, spiral plate rotary rpm and charging and discharging flow valve flow control.Herein described technical solution has the advantages such as structure is simple, easy to operate, energy consumption is lower, low in cost, defoaming effectiveness is high, suitable for the defoaming of high viscosity liquid, it can be avoided the factors such as high temperature, defoaming agent and the quality bring of high viscosity liquid adversely affected.
Description
Technical field
The present invention relates to a kind of vacuum defoaming equipment and debubbling method more particularly to a kind of vacuum for high viscosity liquid
Defoaming equipment and debubbling method, especially suitable for high viscosity and the defoaming of the slurry containing surfactant.
Background technique
In the production process of the high viscosity liquids such as aqueous color paste, to guarantee that the solid particles not soluble in water such as pigment can
Be dispersed stably in liquid, generally require substance of the addition dispersing aid etc. with surface-active, but this will lead to it is a large amount of micro-
The bubble for generating and generating of minute bubbles is more stable, and the high viscosity liquids such as aqueous color paste are difficult to nature and eliminate bubble, or often
Take a long time to defoam naturally, this to the continuous production of product, packing and storing, transport, using etc. have larger shadow
It rings.
Currently, the mode that can be realized defoaming is generally divided into two kinds, i.e. chemical method and physics in industrial processes
Method.The mode that addition defoaming agent is usually used in chemical method defoaming is being steeped this is because defoaming agent has lower surface tension
After being spread in liquid film between foam, due to defoaming molecule of the agent molecule instead of foam surface with surface reactive material, cause new
Very low and foam the stability decline of liquid film local strength, so that foam be made to be easy to rupture.But in actual use, due to liquid
Film-strength is high, and highly viscous liquid is added its antifoaming speed after defoaming agent and is far below low-viscosity (mobile) liquid, thus there is still a need for it is longer when
Between can just have preferable defoaming effect；And defoaming agent can only generally eliminate the bubble of liquid surface, the small gas of liquid internal
Bubble is because of its buoyancy very little, it is difficult to which floating to liquid surface causes it that can not eliminate, and defoaming effectiveness is lower.In addition, defoaming agent is high
The oiliness chemicals of COD, and COD refers to the reduction for chemically measuring and needing to be oxidized in water sample
Property substance amount, be to influence waste water grade and an important factor for processing cost.It not only will increase cost, serious shadow using defoaming agent
Product quality is rung, also will increase the processing difficulty of waste water, the use of defoaming agent makes the discharge of wastewater of many enterprises can not be up to standard.Cause
This to obtain preferable defoaming effectiveness, and guarantees the stability of product, often uses in the industrial production of high viscosity liquid
Physical method defoams it.
There are many physical defoaming modes for being used for liquid product, such as stirring centrifugation to defoam, is true for relevant industries both at home and abroad
Sky defoaming, film defoaming, ultrasonic wave defoaming, heating defoaming etc..But above-mentioned debubbling method haves the defects that certain: stirring centrifugation
The production efficiency of defoaming is low, gas bubbles left is more；When vacuum defoams, defoaming is continuously vacuumized then often because bubble volume is excessively swollen
It is swollen, so as to cause bubble enter vacuum pump influence equipment normal use, it is intermittent vacuumize defoaming then vacuumize twice between
Every overlong time, cause defoaming effectiveness low, and will affect vacuum degree in the gas for vacuumizing tempus intercalare abjection, further drops
Low defoaming effectiveness；The antifoaming speed of film defoaming is compared with slow, treating capacity is small；When ultrasonic wave defoams, due to stingy in high viscosity liquid
Resistance when bubble is vibrated by ultrasonic wave action is larger, and the probability for pooling air pocket is much smaller, even if forming air pocket
Also it is difficult to escape from liquid rapidly, it is extremely low for the defoaming effectiveness of high viscosity liquid；Not only energy consumption is big for heating defoaming, can also allow
Pigment in aqueous color paste etc. because under high temperature dispersing agent adsorption reduce etc. factors due to accelerated sedimentation, influence the steady of product
It is qualitative.
Existing many patent reports in relation to defoaming equipment and method, such as application No. is 201410356940.4 China specially
Benefit " manufacture polyamic acid resin used in defoaming kettle and debubbling method " discloses a kind of hemispherical thin layer distributor that is equipped with
Defoam kettle, and collet be installed outside tank body, heat-conducting medium is added in collet, into defoaming kettle polyamic acid resin solution at thin
Layer dispersion flows, then the gap of the lower edge through thin layer distributor and inner tank wall keep thin layer to continue along inner tank wall to flowing down,
Simultaneously using the reduction of liquid product viscosities and Film strength under high temperature, bubble stability is destroyed, finally bottom is poly- in tank body
Collection, although the equipment structure is simple, defoaming effect is preferable, heating energy consumption is big, excessively heated in portioned product de-aeration
It will affect product quality；It is main that application No. is the Chinese patent of CN201010273742.3 " defoaming devices of high-viscosity liquid product "
If being defoamed using the thinning characteristic of slurry under high shear force, it may be only available for that there is thixotropic slurry, such as gel ink pen
The products such as ink are not suitable for not having significant thixotropic high-viscosity liquid product；The United States Patent (USP) of Publication No. US5612219
Describe defoaming device in a kind of bioreactor, the device be it is a kind of with liquid surface in 45 ° of -90 ° of angles, hydrophobic material systems
Standby plate is defoamed under stirring.The deaeration problem of the lesser high-viscosity liquid product of thixotropy is that puzzlement is high viscous
The important problem for spending liquid product production, for not having significant thixotropic high-viscosity liquid product, the above-mentioned prior art is taken off
The defoaming equipment shown, defoaming effectiveness are difficult to reach the requirement of industrialized production.
Summary of the invention
In order to overcome drawbacks described above, the present invention provides a kind of for the vacuum defoaming equipment of high viscosity liquid and defoaming side
Method, the defoaming equipment and debubbling method, can be to products in such a way that vacuum film defoams and auger defoaming combines
It carries out multiple film defoaming and is assisted with low-speed centrifugal defoaming, and structure is simple, easy to operate, defoaming effectiveness is high, will not
Influence product quality.
High viscosity liquid used in this application is generally referred to the test of NDJ-1 type rotational viscometer, the revolving speed of 6r/min
Under, viscosity tests 6r/min and 60r/min revolving speed in the liquid of 3000mPas or more, especially NDJ-1 type rotational viscometer
Under, viscosity ratio does not have significant thixotropic high-viscosity liquid product less than 3.
The technical scheme is that
A kind of vacuum defoaming equipment for high viscosity liquid, including feeding device and defoaming device, the feeding device
Including wet tank, lifting liquid pump and feed pipe, the feed pipe connection wet tank and defoaming tank body, the lifting liquid
Pump is set on feed pipe at wet tank one end, and positioning is equipped with feed rate valve on feed pipe；
The defoaming device include in have salable cavity defoaming tank body, be set to defoaming tank body on and with the defoaming tank body
The vacuum pump of internal cavity connection, the film forming deaeration baffle plate assembly of the upper half and to be set to defoaming tank body empty in defoaming tank body cavity
The auger deaeration component of intracavitary lower half；
Wherein defoam tank body bottom be towards the inclined inclined floor in side, and at the minimum point of the inclined floor be equipped with
The discharge nozzle of tank interior connection is defoamed, positioning is equipped with discharging flow valve on the discharge nozzle；
Wherein film forming deaeration baffle plate assembly includes overhead gage, the lower baffle plate in anti-umbrella-shaped structure and the fixation in umbrella-shaped structure
The center pillar being connected between upper and lower baffle center, the discharge end nozzle of the feed pipe protrude into defoaming tank body cavity in and just
Flow clearance is formed at overhead gage highest point, and between the lower edge of overhead gage and the inner sidewall for defoaming tank body；The lower block
It is fitted closely between the lower edge of plate and the inner sidewall for defoaming tank body, and the bottom of lower baffle plate is set as metal mesh at center；
Wherein auger deaeration component includes motor, rotary shaft and spiral plate, and the motor positioning is set to defoaming
The bottom outside of tank body, the rotary shaft be vertically arranged along defoaming tank body central axial direction and the rotary shaft and motor it is defeated
Shaft is located by connecting and is driven by motor and rotated, and along rotary shaft, tilting screw fixation is set around rotation to the spiral plate from up to down
Unidirectional flow path is formed in shaft, there are the outers of running clearance and spiral plate to set between the outer and defoaming tank body of spiral plate
There is the baffle for being higher than edge in spiral plate, the upper end of the rotary shaft is concordant with the upper surface at the top of spiral plate.
Its further technical solution is:
The spacing of the flow clearance is 1-5mm.
The acute angle formed between the inclined surface and defoaming tank body inner sidewall of the umbrella-shaped structure of the overhead gage is 30-
85 °, and the acute angle formed between the inclined surface of the anti-umbrella-shaped structure of the lower baffle plate and defoaming tank body inner sidewall is 30-
85°。
The metal mesh is set to lower baffle plate bottom at the center pillar, and the grid aperture of the metal mesh is 1-5mm, and the metal
The wire side of net is equipped with several spines.
Positioning at vacuum pump is corresponded on the vacuum pump and the pipeline of defoaming tank interior connection and is equipped with blow valve, and is defoamed
Tank body is equipped with the pressure gauge for measuring defoaming tank interior pressure.
The defoaming device further includes pedestal, and defoaming tank body is placed on the pedestal, interval at the periphery of the base upper surface
Safeguard that frame, the steel structure safeguard that frame is fixedly connected with the lateral wall defoamed at tank base equipped with several steel structures.
It is in that spout diameter along liquid flow direction is gradually increased shape at the discharge end nozzle of the feed pipe and discharge nozzle.
Disclosed herein as well is a kind of method for carrying out high viscosity liquid defoaming using above-mentioned vacuum defoaming equipment, this method
Include the following steps:
S1: high viscosity liquid is pumped after being promoted in feed pipe in wet tank by lifting liquid, through feed rate
Valve is entered in defoaming tank body by feed pipe, while being started vacuum pump and being formed negative pressure state in defoaming tank body, and starting motor
Make it that rotary shaft be driven to carry out low speed rotation with the revolving speed not higher than 60r/min；
S2: high viscosity liquid is fallen to from the highest point of overhead gage from feed pipe, and diffuses to form outward along overhead gage
One film-form fluid layer, the first film shape fluid layer is completed to defoam for the first time under aforementioned vacuum degree；
S3: high viscosity liquid continuation is flowed down from the lower of overhead gage along end, is flowed downward, is being defoamed along defoaming inner tank wall
The second film-form fluid layer is formed in inner tank wall, the second film-form fluid layer completes second of defoaming under aforementioned vacuum degree；
S4: high viscosity liquid continues to flow on lower baffle plate from defoaming inner tank wall, and inwardly diffuses to form along lower baffle plate the
Three film-form fluid layers, the third film-form fluid layer completes third time defoaming under aforementioned vacuum degree；
S5: high viscosity liquid continues to be flowed from lower baffle plate to being located on the metal mesh of lower baffle plate bottom, passes through metal mesh
It flows downward, completes the 4th defoaming；
S6: high viscosity liquid continue from metal web stream to spiral plate on, rotary shaft drive spiral plate with aforementioned revolving speed into
Row low speed rotation, then high viscosity liquid flows along spiral plate and forms the 4th film-form fluid layer in spiral plate surface, is rotating
The 4th film-form fluid layer completes the 5th defoaming under shearing force and surface tension effects；
S7: high viscosity liquid continues after flowing on inclined floor along spiral plate lower edge, flows to discharging along inclined floor
At pipe, discharge through discharging flow valve.
Its further technical solution is:
Negative pressure state described in S1 step is the vacuum degree of 0.2-0.6 atmospheric pressure.
The first film shape fluid layer with a thickness of 1-5mm, the second film-form fluid layer with a thickness of 1-4mm, third film-form stream
Layer with a thickness of 1-5mm, the 4th film-form fluid layer with a thickness of 1-4mm.
The method have the benefit that: the application vacuum defoaming equipment be arranged the opposite deaeration baffle of both direction and
The spiral plate of one large area makes high viscosity liquid be in the state of film fluid layer always, considerably increases its surface area and table
Face tension can effectively eliminate bubble；The low speed rotation of spiral plate accelerates the film forming speed and flowing velocity of high viscosity liquid,
The rotational shear generated simultaneously can also eliminate bubble.The application debubbling method uses multiple defoaming mode, in conjunction with certain true
Reciprocal of duty cycle, spiral plate rotary rpm and charging and discharging flow valve flow control carry out the defoaming of efficient stable.Herein described technology
Scheme has the advantages such as structure is simple, easy to operate, energy consumption is lower, low in cost, defoaming effectiveness is high, is suitable for high viscosity liquid
Defoaming, can be avoided the factors such as high temperature, defoaming agent and the quality bring of high viscosity liquid adversely affected.
Detailed description of the invention
Fig. 1 is the overall structure diagram of defoaming equipment of the present invention；
Fig. 2 is the overlooking structure diagram of metal mesh of the present invention；
Wherein:
1 wet tank；
2 lifting liquids pump；
3 feed pipes；
4 feed rate valves；
5 defoaming tank bodies；5-1 inclined floor；
6 vacuum pumps；
7 film forming deaeration baffle plate assemblies；7-1 overhead gage；7-2 lower baffle plate；7-3 center pillar；7-4 flow clearance；7-5 metal mesh；
8 auger deaeration components；8-1 motor；8-2 rotary shaft；8-3 spiral plate；
9 discharge nozzles；
10 discharging flow valves；
11 blow valves；
12 pressure gauges；
13 pedestals；
14 steel structures safeguard frame.
Specific embodiment
In order to better understand the technical means of the present invention, it and can be implemented in accordance with the contents of the specification, below
In conjunction with the accompanying drawings and embodiments, specific embodiments of the present invention will be described in further detail, and following embodiment is for illustrating this
Invention, but be not intended to limit the scope of the invention.
This specific embodiment describes a kind of vacuum defoaming equipment for high viscosity liquid in detail, and specific structure is referring to figure
Shown in 1.
The vacuum defoaming equipment mainly includes control device, feeding device and defoaming device.
Control deviceMain includes input mould group, center processing mould group etc., wherein input mould group is mainly human-computer interaction circle
The component for inputs such as parameter informations such as face such as touching display screen, mouse, keyboard, center processing mould group are mainly used for the equipment
In each electric component starting close, each electric component according to setup parameter carries out operation, processing of various information datas etc., this
Control device in application is the common control device of fields of numeric control technique, is repeated no more in the application.Aftermentioned feed rate
Valve, discharging flow valve, blow valve, vacuum pump, pressure gauge and motor are connected with the control device, which can
Keep the setting of technological parameter more accurate, convenient, and the pressure inside equipment, timely adjustment blow valve can be understood at any time.
Feeding deviceIncluding wet tank 1, lifting liquid pump 2 and feed pipe 3.Feed pipe 3 is connected to wet tank 1 and aftermentioned
Defoaming tank body 5, lifting liquid pump 2 be set to feed pipe 3 on close to wet tank 1 one end at, on feed pipe positioning be equipped with one
Feed rate valve 4, the feed rate valve are connect with foregoing control device.In addition, in nozzle at the discharge end nozzle of feed pipe 3
Diameter is gradually increased shape along liquid flow direction, is conducive to the outflow of high viscosity liquid.
Defoaming deviceIncluding the interior defoaming tank body 5 for having salable cavity, be set to defoaming tank body on and in the defoaming tank body
The vacuum pump 6 of cavity connection, the film forming deaeration baffle plate assembly 7 of the upper half and to be set to defoaming tank body empty in defoaming tank body cavity
The auger deaeration component 8 of intracavitary lower half.
Wherein defoaming tank body 5 is in can-like structure, and bottom outside is equipped with a pedestal 13, and defoaming tank body is placed on the pedestal,
Several steel structures maintenance frame 14 is equipped at intervals at the periphery of the base upper surface, which safeguards frame and defoaming tank base
The lateral wall at place is fixedly connected, and capable of making defoaming in this way, tank body is stronger stands on pedestal.The bottom for defoaming tank body 5 is towards one
The inclined inclined floor 5-1 in side, and the discharge nozzle 9 being connected to defoaming tank interior is equipped at the minimum point of the inclined floor, it should
Positioning is equipped with discharging flow valve 10 on discharge nozzle, which connect with foregoing control device.Furthermore the discharging of discharge nozzle 9
It is gradually increased shape along liquid flow direction in spout diameter at end pipe mouth, can be more advantageous to inclined floor mutual cooperation high viscous
Spend the outflow of liquid.Defoaming tank body 5 be equipped with for measure defoaming tank interior pressure pressure gauge 12, furthermore vacuum pump 6 and
Positioning at vacuum pump is corresponded on the pipeline of defoaming tank interior connection and is equipped with blow valve 11, is generated for discharging defoaming tank interior
Gas.Above-mentioned vacuum pump 6, blow valve 11 and pressure gauge 12 are connect with foregoing control device respectively, pass through control device tune
The vacuum degree of vacuum pump is saved, and can check at any time after pressure gauge reading and timely adjustment blow valve is read according to pressure gauge.
Wherein film forming deaeration baffle plate assembly 7 includes overhead gage 7-1, the lower baffle plate 7- in anti-umbrella-shaped structure in umbrella-shaped structure
The 2 and center pillar 7-3 that is fixedly connected between upper and lower baffle center, and the center of overhead gage and the line at lower baffle plate center, center pillar
Axis and the central axis for defoaming tank body are overlapped.The discharge end nozzle of feed pipe 3 protrudes into the cavity of defoaming tank body and is located at
At the top of overhead gage, and at the discharge end nozzle face overhead gage highest point of the feed pipe 3, and feed pipe 3 is in defoaming tank body
Interior one section of central axis is overlapped with the central axis of defoaming tank body.The inner sidewall of the lower edge of overhead gage 7-1 and defoaming tank body 5 it
Between be formed with flow clearance 7-4, convenient for high viscosity liquid by the flow clearance down along defoaming tank interior flow to lower baffle plate, should
The spacing size of flow clearance is arranged according to the viscosity of liquid, and basic principle is that the flow clearance is dimensioned to that liquid can be made
Film is formed along inner tank wall and does not cause accumulated plugging, the preferred 1-5mm of spacing size of the flow clearance, this tool in the application
The flow clearance is set as 2mm in body embodiment, and high viscosity liquid can be improved in tank body in above-mentioned suitable flow clearance size
Rate is defoamed on wall.It is fitted closely between the lower edge of lower baffle plate 7-2 and the inner sidewall for defoaming tank body 5, i.e., the lower edge of lower baffle plate is solid
Be scheduled on defoaming tank body 5 inner sidewall on and it is very close to each other between the inner sidewall, prevent high viscosity liquid from directly flowing down from there
It goes.The bottom of lower baffle plate is set as metal mesh 7-5 (referring to fig. 2) at center, which is further set to lower baffle plate
At the center pillar, liquid can flow downward out from the metal mesh for bottom, and be set as can for the sizing grid of metal mesh in the application
It flows down high viscosity liquid and defoaming can be played the role of, preferred metal mesh grid aperture is 1-5mm, in this specific embodiment
Metal mesh grid is set as 3mm；Furthermore the wire side of the metal mesh is equipped with several spines, is defoamed for assisting.In lower baffle plate
Upper setting metal mesh can not only be such that high viscosity liquid flows out downward there-from, more increase one on the basis of lower baffle plate defoams
Road defoams process, improves defoaming effectiveness.The deaeration baffle plate assembly that forms a film in the application can pass through following manner in defoaming tank body
Be fixed: settable several places are fixedly connected with the inner wall of defoaming tank body on the overhead gage 7-1, which can set
Setting is fixedly connected with overhead gage with the side inner sidewall for defoaming tank body, also can be set in overhead gage
Make overhead gage on upper surface and defoam the upper inside top surface wall of tank body to be fixedly connected, the mode of being fixedly connected can be welding can also be with
It is fixedly connected by connectors such as connecting rods；Settable several places are fixed between the center pillar 7-3 and overhead gage 7-1 connects
It connects, this is fixedly connected can be and is attached using several connecting rods as connector, specifically can be the one of connecting rod
End is fixedly connected on the medial surface of overhead gage umbrella-shaped structure, and the other end is fixedly connected in center pillar outer peripheral sidewall, is fixedly connected
The preferable welding manner of mode, in this way can stronger support overhead gage；It is needed at the lower edge of the lower baffle plate 7-2 and defoaming tank
It is fitted closely between the inner sidewall of body, the lower edge of lower baffle plate can be directlyed adopt to welding manner and be fixedly connected on defoaming tank body
On the inner sidewall of side.In addition, the umbrella-shaped structure of overhead gage 7-1 and the anti-umbrella-shaped structure of lower baffle plate 7-2 all have inclined surface, this inclines
The inclined degree needs on inclined-plane are configured according to the viscosity of high viscosity liquid, and setting principle is that the inclined degree can make liquid exist
Film is formed in flow process on the inclined surface of overhead gage and lower baffle plate, the inclined surface of the umbrella-shaped structure of overhead gage in the application
The acute angle formed between defoaming tank body inner sidewall is 30-85 °, and the inclined surface of the anti-umbrella-shaped structure of lower baffle plate and defoaming
The acute angle formed between tank body inner sidewall is 30-85 °, and the angle of above-mentioned two acute angle is equal in this embodiment
It is preferred that 65 °.The film forming deaeration baffle plate assembly sufficiently increases the film formation surface product of high viscosity liquid, considerably increases its surface
Power reduces the thickness of fluid film, improves defoaming effectiveness.
Wherein auger deaeration component 8 is located at the lower section of film forming deaeration baffle plate assembly, the auger deaeration component packet
Include motor 8-1, rotary shaft 8-2 and spiral plate 8-3.Motor 8-1 positioning is set to the bottom outside of defoaming tank body 5, this is specific
It is located in pedestal 13 in embodiment, and the motor is connect with foregoing control device.Rotary shaft 8-2 is along defoaming tank body central axis
Direction is vertically arranged and the output shaft of the rotary shaft and motor is located by connecting and drives rotation by motor.The edge spiral plate 8-3
Fixed be set around in rotary shaft of tilting screw forms unidirectional flow path to rotary shaft from up to down, i.e., spiral plate is interior along rotation
The winding of axis spiral is simultaneously tightly fastened on the rotary shaft, in spiral plate along with there is no gap between rotary shaft, prevent liquid from spiral
It is leaked out in plate；There are running clearances between the outer and defoaming tank body of spiral plate, and the size of the running clearance is in order to spiral shell
Rotating plate rotation；At the outer of spiral plate be equipped be higher than spiral plate in edge baffle, the baffle can avoid high viscosity liquid from
It is flowed out at spiral plate outer, the upper end of this outer rotary shaft is concordant with the upper surface at the top of spiral plate.The auger deaeration component 8
The cross-sectional area of defoaming tank body is adequately utilized in the setting of middle spiral plate, and motor is able to drive rotary shaft rotation, rotation
Axis drives spiral plate to rotate synchronously, and in the case where slowly running, high viscosity liquid can more easily be diffused into spiral plate surface, again
The film of high surface area is formed, and the rotational shear generated can also eliminate bubble.
The method for carrying out high viscosity liquid defoaming using herein described vacuum defoaming equipment, mainly includes the following steps:
S1: by high viscosity liquid through lifting liquid pump 2 after being promoted in feed pipe 3 in wet tank 1, through feeding flow
Amount valve 4 is entered in defoaming tank body 5 by feed pipe, while being started vacuum pump 6 and being formed negative pressure state in defoaming tank body, and starting electricity
Motivation 8-1 makes it that rotary shaft 8-2 be driven to carry out low speed rotation with the revolving speed not higher than 60r/min.It is defoamed in tank body in the step
The vacuum degree of negative pressure state is generally adjusted according to by the characteristic of volatile component in deaeration liquid and the viscosity of liquid: if true
Reciprocal of duty cycle is too low to will lead to the reduction of deaeration efficiency；Although can also be led if vacuum degree is excessively high can to allow the faster swelling fracture of bubble
Cause is largely detached from by the volatile components in deaeration liquid.Therefore specific vacuum degree generally requires to determine by testing, this
Field technical staff can obtain specific vacuum degree by many experiments, such as under normal circumstances, the aqueous color of medium-high viscosity
Slurry selection control vacuum degree carries out deaeration between 0.2-0.6 atmospheric pressure.
S2: high viscosity liquid is fallen to from the highest point of overhead gage from feed pipe, and diffuses to form thickness outward along overhead gage
Degree is the first film shape fluid layer of 1-5mm, and the bubble chaotropic body surface distance in high viscosity liquid becomes smaller, under negative pressure state,
The rapid swelling fracture of bubble, then the first film shape fluid layer is completed to defoam for the first time under aforementioned vacuum degree；
S3: high viscosity liquid continuation is flowed down from the lower of overhead gage along end, is flowed downward, is being defoamed along defoaming inner tank wall
The second film-form fluid layer with a thickness of 1-4mm is formed in inner tank wall, the second film-form fluid layer is completed under aforementioned vacuum degree
Second of defoaming；
S4: high viscosity liquid continues to flow on lower baffle plate from defoaming inner tank wall, and inwardly diffuses to form thickness along lower baffle plate
Degree is the third film-form fluid layer of 1-5mm, and the third film-form fluid layer completes third time defoaming under aforementioned vacuum degree；
S5: high viscosity liquid continues to be flowed from lower baffle plate to being located on the metal mesh of lower baffle plate bottom, passes through metal mesh
It flows downward, completes the 4th defoaming；
S6: high viscosity liquid continue from metal web stream to spiral plate on, rotary shaft drive spiral plate with aforementioned revolving speed into
Row low speed rotation, then high viscosity liquid flows along spiral plate and forms the 4th film with a thickness of 1-4mm in spiral plate surface
Shape fluid layer, the 4th film-form fluid layer completes the 5th defoaming under rotational shear and surface tension effects；
S7: high viscosity liquid continues after flowing on inclined floor along spiral plate lower edge, flows to discharging along inclined floor
At pipe, discharge through discharging flow valve.
In above-mentioned S1 step and S7 step, the discharging of the charging of high viscosity liquid can carry out simultaneously, be fed by adjusting
Flow valve and discharging flow valve make the stability of flow for defoaming high viscosity liquid in tank body, make to produce serialization.It is fed in the application
The flow proportional of flow valve and discharging flow valve is preferably 1:1, to guarantee the balance of material disengaging, but in order to guarantee defoaming equipment
There is a small amount of residual liquid in inside and liquid upper surface is no more than spiral plate bottom end, can control feed rate valve and discharging flow valve
Flow proportional between 1:2-2:1.Wherein level control can be by adding probe, and connects charging, discharging control equipment
Mode is completed, which belongs to technical solution well-known to those skilled in the art, is repeated no more in the application.It is filled by control
The parameters such as the revolving speed for adjusting the flow of feed rate valve, the flow of discharging flow valve, the vacuum degree of vacuum pump, motor are set, and
In conjunction with the reading for checking pressure gauge at any time, timely adjustment blow valve is read according to pressure gauge.
The spiral plate of herein described vacuum defoaming equipment setting both direction opposite deaeration baffle and a large area,
So that high viscosity liquid is in the state of film fluid layer always, considerably increase its surface area and surface tension, can effectively eliminate
Bubble；The low speed rotation of spiral plate accelerates the film forming speed and flowing velocity of high viscosity liquid, while the rotational shear generated
Power can also eliminate bubble.Technical scheme use multiple defoaming mode, have structure it is simple, it is easy to operate, energy consumption compared with
It is low, low in cost, defoaming effectiveness is high etc., and advantages can be avoided the factors such as high temperature, defoaming agent suitable for the defoaming of high viscosity liquid
To the quality bring adverse effect of high viscosity liquid.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of vacuum defoaming equipment for high viscosity liquid, including feeding device and defoaming device, it is characterised in that:
The feeding device includes wet tank (1), lifting liquid pump (2) and feed pipe (3), the feed pipe connection liquid storage
Tank and defoaming tank body, the lifting liquid pump is set on feed pipe at wet tank one end, and positioning is equipped on feed pipe
Feed rate valve (4)；
The defoaming device include in have salable cavity defoaming tank body (5), be set to defoaming tank body on and with the defoaming tank body
Internal cavity connection vacuum pump (6), set on defoaming tank body cavity in the upper half film forming deaeration baffle plate assembly (7) and be set to defoaming
The auger deaeration component (8) of lower half in tank body cavity；
The bottom for wherein defoaming tank body (5) is and to set at the minimum point of the inclined floor towards the inclined inclined floor in side (5-1)
There is the discharge nozzle (9) being connected to defoaming tank interior, positioning is equipped with discharging flow valve (10) on the discharge nozzle；
Wherein film forming deaeration baffle plate assembly (7) includes in the overhead gage (7-1) of umbrella-shaped structure, in the lower baffle plate of anti-umbrella-shaped structure
(7-2) and the center pillar being fixedly connected between upper and lower baffle center (7-3), the discharge end nozzle of the feed pipe (3), which protrudes into, to disappear
It steeps in the cavity of tank body and at face overhead gage highest point, and be formed between the lower edge of overhead gage and the inner sidewall for defoaming tank body
Flow clearance (7-4)；It is fitted closely between the lower edge of the lower baffle plate and the inner sidewall for defoaming tank body, and the bottom of lower baffle plate is leaned on
Metal mesh (7-5) is set as at nearly center；
Wherein auger deaeration component (8) includes motor (8-1), rotary shaft (8-2) and spiral plate (8-3), described electronic
Machine positioning is set to the bottom outside of defoaming tank body, and the rotary shaft is vertically arranged along defoaming tank body central axial direction and the rotation
The output shaft of axis and motor is located by connecting and is driven by motor and rotated, and the spiral plate tilts spiral shell along rotary shaft from up to down
Be rotated with to be set around in rotary shaft surely and form unidirectional flow path, between the outer of spiral plate and defoaming tank body there are running clearance and
The outer of spiral plate is equipped with the baffle for being higher than edge in spiral plate, and the upper end of the rotary shaft and the upper surface at the top of spiral plate are put down
Together.
2. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the flow clearance
The spacing of (7-4) is 1-5mm.
3. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the overhead gage
The acute angle formed between the inclined surface and defoaming tank body inner sidewall of the umbrella-shaped structure of (7-1) is 30-85 °, and the lower block
The acute angle formed between the inclined surface and defoaming tank body inner sidewall of the anti-umbrella-shaped structure of plate (7-2) is 30-85 °.
4. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the metal mesh
(7-5) is set to the lower baffle plate bottom (7-2) at the center pillar, and the grid aperture of the metal mesh is 1-5mm, and the wire side of the metal mesh
It is equipped with several spines.
5. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the vacuum pump
(6) positioning at vacuum pump is corresponded on the pipeline being connected to defoaming tank interior and be equipped with blow valve (11), and defoam tank body and be equipped with
For measuring the pressure gauge (12) of defoaming tank interior pressure.
6. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the defoaming device
It further include pedestal (13), defoaming tank body is placed on the pedestal, several steel structures dimension is equipped at intervals at the periphery of the base upper surface
It protects frame (14), which safeguards that frame is fixedly connected with the lateral wall defoamed at tank base.
7. the vacuum defoaming equipment according to claim 1 for high viscosity liquid, it is characterised in that: the feed pipe
It (3) and at the discharge end nozzle of discharge nozzle (9) is in that spout diameter along liquid flow direction is gradually increased shape.
8. a kind of carry out high viscosity liquid defoaming using vacuum defoaming equipment described in any claim in claim 1 to 7
Method, it is characterised in that: include the following steps:
S1: by high viscosity liquid by lifting liquid pump after being promoted in feed pipe in wet tank, through feed rate valve by
Feed pipe enters in defoaming tank body, while starting vacuum pump and forming negative pressure state in defoaming tank body, and starting motor and make it
Rotary shaft is driven to carry out low speed rotation with the revolving speed not higher than 60r/min；
S2: high viscosity liquid is fallen to from the highest point of overhead gage from feed pipe, and it is thin to diffuse to form along overhead gage first outward
Membranaceous fluid layer, the first film shape fluid layer is completed to defoam for the first time under aforementioned vacuum degree；
S3: high viscosity liquid continuation is flowed down from the lower of overhead gage along end, is flowed downward along defoaming inner tank wall, in defoaming tank body
The second film-form fluid layer is formed on inner wall, the second film-form fluid layer completes second of defoaming under aforementioned vacuum degree；
S4: high viscosity liquid continues to flow on lower baffle plate from defoaming inner tank wall, and it is thin inwardly to diffuse to form along lower baffle plate third
Membranaceous fluid layer, the third film-form fluid layer completes third time defoaming under aforementioned vacuum degree；
S5: high viscosity liquid continue from lower baffle plate flow to be located at lower baffle plate bottom metal mesh on, it is downward by metal mesh
The 4th defoaming is completed in flowing；
S6: high viscosity liquid continues on from metal web stream to spiral plate, and it is low that rotary shaft drives spiral plate to carry out with aforementioned revolving speed
Speed rotation, then high viscosity liquid flows along spiral plate and forms the 4th film-form fluid layer in spiral plate surface, in rotational shear
The 4th film-form fluid layer completes the 5th defoaming under power and surface tension effects；
S7: high viscosity liquid continues after flowing on inclined floor along spiral plate lower edge, flows at discharge nozzle along inclined floor,
It discharges through discharging flow valve.
9. according to the method described in claim 8, it is characterized by: negative pressure state described in S1 step is 0.2-0.6 atmosphere
The vacuum degree of pressure.
10. according to the method described in claim 8, it is characterized by: the first film shape fluid layer it is thin with a thickness of 1-5mm, second
Membranaceous fluid layer with a thickness of 1-4mm, third film-form fluid layer with a thickness of 1-5mm, the 4th film-form fluid layer with a thickness of 1-
4mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437708.6A CN110141889A (en) | 2019-05-24 | 2019-05-24 | Vacuum defoaming equipment and debubbling method for high viscosity liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437708.6A CN110141889A (en) | 2019-05-24 | 2019-05-24 | Vacuum defoaming equipment and debubbling method for high viscosity liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110141889A true CN110141889A (en) | 2019-08-20 |
Family
ID=67593020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910437708.6A Withdrawn CN110141889A (en) | 2019-05-24 | 2019-05-24 | Vacuum defoaming equipment and debubbling method for high viscosity liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110141889A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500790A (en) * | 2020-12-01 | 2021-03-16 | 朱舒畅 | Epoxy modified silicone resin coating and preparation method thereof |
| CN113581674A (en) * | 2021-07-22 | 2021-11-02 | 刘光有 | Raw material storage tank for food safety production |
| CN113856248A (en) * | 2021-10-25 | 2021-12-31 | 北京交通大学 | Full-automatic bubble-removing and oil-filling device |
| CN114249942A (en) * | 2021-03-04 | 2022-03-29 | 东莞市久磐塑胶有限公司 | Spraying-free flame-retardant uv-resistant plastic, production equipment and processing method |
| CN114887356A (en) * | 2022-04-24 | 2022-08-12 | 新希望乳业股份有限公司 | Bubble removing equipment and method |
-
2019
- 2019-05-24 CN CN201910437708.6A patent/CN110141889A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500790A (en) * | 2020-12-01 | 2021-03-16 | 朱舒畅 | Epoxy modified silicone resin coating and preparation method thereof |
| CN114249942A (en) * | 2021-03-04 | 2022-03-29 | 东莞市久磐塑胶有限公司 | Spraying-free flame-retardant uv-resistant plastic, production equipment and processing method |
| CN113581674A (en) * | 2021-07-22 | 2021-11-02 | 刘光有 | Raw material storage tank for food safety production |
| CN113856248A (en) * | 2021-10-25 | 2021-12-31 | 北京交通大学 | Full-automatic bubble-removing and oil-filling device |
| CN113856248B (en) * | 2021-10-25 | 2022-10-25 | 北京交通大学 | Full-automatic bubble-removing and oil-filling device |
| CN114887356A (en) * | 2022-04-24 | 2022-08-12 | 新希望乳业股份有限公司 | Bubble removing equipment and method |
| CN114887356B (en) * | 2022-04-24 | 2023-10-31 | 新希望乳业股份有限公司 | Bubble removal equipment and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110141889A (en) | Vacuum defoaming equipment and debubbling method for high viscosity liquid | |
| CN101972560A (en) | Defoaming device for high viscosity liquid product | |
| CN208786384U (en) | Reaction kettle with anti-function of foaming | |
| CN208684500U (en) | A kind of flocculation basin blender defoamed | |
| CN116589064B (en) | Dosing device and dosing method for sewage treatment | |
| CN210251337U (en) | Vacuum defoaming equipment for high-viscosity liquid | |
| CN101267876A (en) | Device for creating liquid with fine air bubbles, and device for fining air bubbles, used for the same | |
| CN102233245B (en) | Gas, solid and liquid stirring machine with high-efficiency flexible structure | |
| CN208065838U (en) | A kind of mist eliminating device and the material-compound tank with mist eliminating function | |
| CN201823345U (en) | Defoaming device for high-viscosity liquid product | |
| JP2007253095A (en) | Defoaming apparatus and applicator | |
| CN207462727U (en) | A kind of slurry vacuum degassing bulb apparatus | |
| JPH06292558A (en) | Agitation type fermentation tank | |
| CN206853545U (en) | A kind of chemical industry latex storage tank material mixed stirring device | |
| CN206661062U (en) | Sodium hydride catalyst preparation tank with defoaming function | |
| CN215743026U (en) | Relay station type turbulence generator for turbid liquid material pipeline conveying system | |
| CN2774627Y (en) | Double focus stirring biochemical reactor | |
| CN206660669U (en) | A kind of solid-liquid reaction device device for eliminating foam | |
| CN105921091B (en) | One kind esterification degumming sulfonation reactor | |
| CN219251736U (en) | Defoaming device for high-viscosity liquid | |
| CN110331078A (en) | A kind of air-dissolving apparatus for aerobic fermentation system | |
| CN205925636U (en) | Sealed reaction unit who glues of high viscosity UV with rapid deaeration function | |
| CN213348663U (en) | Chemical raw material stirring device | |
| CN216986418U (en) | High viscosity yeast fluid removes bubble device | |
| CN221252473U (en) | Cache tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190820 |
|
| WW01 | Invention patent application withdrawn after publication |