CN108786263A - A kind of process and device of pre-filtering and filter press linkage fast filtering - Google Patents
A kind of process and device of pre-filtering and filter press linkage fast filtering Download PDFInfo
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- CN108786263A CN108786263A CN201811038083.8A CN201811038083A CN108786263A CN 108786263 A CN108786263 A CN 108786263A CN 201811038083 A CN201811038083 A CN 201811038083A CN 108786263 A CN108786263 A CN 108786263A
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- Prior art keywords
- filtrate
- filtering
- filter press
- filter
- tank body
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- 238000001914 filtration Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000706 filtrate Substances 0.000 claims abstract description 114
- 239000007788 liquid Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000008676 import Effects 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 claims 1
- 239000002657 fibrous material Substances 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 10
- 239000004744 fabric Substances 0.000 description 11
- 239000012065 filter cake Substances 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000013327 media filtration Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- -1 that is Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
A kind of process and device of pre-filtering and filter press linkage fast filtering, belong to filter press technical field.Including filtrate delivery pump（17）, filter press（18）, filtrate delivery pump（17）With filter press（18）Between feeding pipe（19）, which is characterized in that in filtrate delivery pump（17）With filter press（18）Between feeding pipe（19）The upper pre-filtering enrichment facility filtered in filter press equipped with quickening filtrate（20）；The pre-filtering enrichment facility（20）Including tank body（8）, tank body（8）It is interior to be equipped with filtrate area（13）, filter out clear liquid area（15）.The present invention can accelerate filtrate, the rate of filtration of the especially sticky filtrate in filter press, the filtering of filtrate machine, the rate of filtration to can be improved 2-5 times in the case where not adding medicament.
Description
Technical field
The present invention relates to the processes and device of a kind of pre-filtering and filter press linkage fast filtering, belong to filter press skill
Art field.
Background technology
Chamber-type press filter is the most widely used dehydration device of current solid-liquid separation dehydration, have press filtration can not adding medicine, make
Filtrate invariance, filter run high degree of automation, the low characteristic of dehydration cost；Filtered fluid under regular situation（Also referred to as filtrate
Or filtrate）Clay content differs between 0.3%~2%, and there is also some silt particle grain of different thickness, toughness for some filtrates
What height did not waited contains solid object.Filtering filtrate has a draining process through filter cloth, " filtrate " more sticky mistake during this draining
Cheng Yuechang, the easier blocking of filter cloth mesh, the leading portion rate of filtration is fast, but filter cloth will soon be caused to block, and seriously affects
Filtering velocity degree, some media filtrations need tens even can just be filtered dry for over one hundred hour.At present to accelerate the rate of filtration, largely adopt
Medicament such as PAC, PAM are added in filtrate in filtrate concentration basin, filter press is pumped into feed pump again after pre-concentration, this
One method disadvantage, which is that 1. medicament is added in, can change filtrate physicochemical property, cannot be used to characteristic filtrate.2. dosings can be led
Dehydration cost is caused to increase.3. the method that medicament is added in cannot change the viscosity of filtrate, filter cloth surface dope cannot be destroyed
The difficult pervious bed of formation.Critical issue is the sticky layer that above method cannot destroy filter cloth surface, and improve the rate of filtration has very much
Limit.
Invention content
The purpose of the present invention is being directed to disadvantage of the existing technology, a kind of pre-filtering and filter press are provided and linked quick mistake
The process and device of filter, it configures on the basis of filter press filtration system between filtrate delivery pump and filter press a set of
Pre-filtering enrichment facility, this method and device can accelerate filtrate, especially sticky filtrate pressing in the case where not adding medicament
Rate of filtration when filter, the filtering of filtrate machine, the rate of filtration can be improved 2-5 times.
Above-mentioned goal of the invention is achieved through the following technical solutions：A kind of pre-filtering and filter press link fast filtering
Process and device, including filtrate delivery pump, filter press, filtrate delivery pump and filter press between feeding pipe,
Point is, dense equipped with the pre-filtering that filtrate is filtered in filter press is accelerated on the feeding pipe between filtrate delivery pump and filter press
Compression apparatus；The pre-filtering enrichment facility includes tank body, and filtrate area is equipped in tank body, filters out clear liquid area, the filtrate area of tank body
It is built-in with filter screen, the bottom end of tank body is equipped with filtrate import, the top of tank body is equipped with concentrated dense filtrate and exports, in tank body
Portion is equipped with pulse compressed air input channel, is kept off equipped with back flushing air at the pulse compressed air input channel import position of tank body
The lower part of plate, tank body is equipped with filtered clear water output channel.
Preferably, equipped with filtrate inlet valve, check-valves in filtrate import, dense filtrate outlet is equipped with filtrate pressure gauge, gas
Enrichment materials outlet valve is moved, recoil compressed air pressure gauge, pulse air inlet valve, clear water are housed on pulse compressed air input channel
On output channel water valve is cleared equipped with Pneumatic concentration.
Preferably, the filter screen is a kind of pressure resistance, single-layer or multi-layer filter screen, Multilayer Network is different pore size from big
It is combined into small, material can use biologically inert web, ceramic network, stainless (steel) wire etc..
Preferably, the pulse air inlet valve, Pneumatic concentration clear water valve, filtrate inlet valve, Pneumatic concentration raw material
The unlatching of outlet valve is carried out automatically controlling using electropneumatic ball valve by PLC, that is, programmable logic controller (PLC).
Preferably, 5-20 μm of the filter screen aperture, single-layer or multi-layer stainless steel sintered meshwork.
Preferably, PLC, that is, Programmable logical controller of the filtrate delivery pump, filter press, pre-filtering enrichment facility
Device is connect with an automatic control device, realizes that the coordination of filtrate delivery pump, filter press, pre-filtering enrichment facility three is transported automatically
Row.
Preferably, the filtrate is the high filtrate of toughness.
The present invention accelerates the mechanism that filtrate is filtered in filter press and flow is as follows：
（1）, under the control of automatic control device, close pulse air inlet valve, open filtrate inlet valve, Pneumatic concentration raw material goes out
Mouth valve, Pneumatic concentration clear water valve, filtrate delivery pump, filter press（18）, the high filtrate of toughness is passed through defeated by filtrate delivery pump
Pressure mode of movement inputs pre-filtering enrichment facility to pipe material from the bottom up, and the high filtrate of toughness passes through pre-filtering enrichment facility
Filter screen filtering, concentrated dense filtrate by Pneumatic concentration material outlet valve be conveyed into filter press filter；It filters out
Clear water pass through clear water flow regulating valve, output channel outflow；
（2）, with filtrate by pre-filtering enrichment facility filter screen, canvas press cloth filtering, filtrate filter screen, filter
Cloth filtrate side forms filter cake, and the big filtrate of toughness can form in filter screen, filter cloth surface difficult permeable in a relatively short period of time
The sticky layer of filtrate, the rate of filtration and clear water flow slow down gradually, when filtrate flow velocity significantly reduces, in automatic control device
Control is lower to enter the blowback de- filter cake stage, and stages operating sequence is：Closing, Pneumatic concentration clear water valve, and stopping filters out clear water,
Unbalanced pulse gas inlet valve enters compressed air, and the pressure of recoil compressed air pressure gauge is 0.6-1.0MPa, pulse compressed air
Recoil time 3-120 seconds, filtrate pressure gauge reading make the filter for investing filter screen filtrate side between 0.5MPa--0.9MPa
The sticky layer of cake, filtrate falls off.The sticky layer of filter cake, filtrate to fall off is by filtrate delivery pump from Pneumatic concentration material outlet valve to pressure
Filter is pushed to the carriage body of chamber-type press filter.The filter cake stage is taken off since compressed air enters filtrate, into filter press pressure in blowback
Contracting air can make to be attached to the sticky layer of filter cake, the filtrate i.e. impermeable stratum of filter cloth surface breakdown formation spilehole therewith, destroy
Impermeable stratum accelerates subsequent filter drainage speed.
On be constantly repeated with flow, can play pre-filtering enrichment facility pre-filtering itself generate filtrate i.e. clear water and it is dense
Contracting filtrate；Compressed air can be entered repeatedly simultaneously, the impermeable stratum on filter cloth surface layer in filter press is destroyed and accelerate the rate of filtration.
(3), blowback takes off filter cake stages period according to the various heterogeneitys of filtrate, filter screen mesh through filter pressure, water outlet
The factors such as amount are adjusted.
（4）, pre-filtering enrichment facility it is different according to filtering filtrate flow, single or multiple parallel-connection structures are respectively adopted, and
The device for being coupled structure is similar with chamber-type press filter now.
Filtrate leaches 20% to 40% clear water, that is, filtrate in filtrate area by filter screen micropore, and passes through the pneumatic of unlatching
Concentration clears water valve and is discharged to clean solution tank from clear water output channel.
Beneficial effects of the present invention：It overcomes disadvantage of the existing technology, can be in the case where not adding medicament gram
The deficiency of method for concentration before the pump that clothes use at present accelerates filtrate to be especially sticky filtrate in the rate of filtration of filter press, filtering
Speed can be improved 2-5 times.And medicament is added and accelerates disadvantage existing for the rate of filtration of the filtrate in filter press, the filtering of filtrate machine：
1. can change filtrate physicochemical property, characteristic filtrate cannot be used.2. dosings can cause dehydration cost to increase.3. medicine is added in
Agent process cannot change the viscosity of filtrate, cannot destroy the difficult pervious bed of filter cloth surface dope formation.
The scope of application of the present invention：The present invention is suitable for sewage disposal sludge press filtration, mine, building materials, medicine, chemical industry, food
Product processing, etc. industrial and mining enterprises with filter press technique be separated by solid-liquid separation extraction, filter press manufacturing firm filter-pressing process and device the necks such as mating
Domain.
Description of the drawings
Fig. 1：The block diagram of the present invention
Fig. 2：Pre-filtering enrichment facility front view in Fig. 1
Fig. 3：The left view of automatically controlled pneumatic ball valve, PLC, that is, programmable logic controller (PLC) in Fig. 2 increases
Fig. 4：The right view of automatically controlled pneumatic ball valve, PLC, that is, programmable logic controller (PLC) in Fig. 2 increases
In Fig. 1-4,1- filtrate imports, the dense filtrate outlets 2-, 3- recoil compressed air atmospheric pressure tables, 4- filtrate pressure gauges, 5- arteries and veins
Punching press contracting air inlet pipe, 6- pulse air inlet valves, 7- clear water output channels, 8- tank bodies, 9- filter screens, 10- Pneumatic concentrations
Material outlet valve, 11- back flushing air baffles, 12- filtrate inlet valves, 13- filtrates area, 14- concentrate out clear water drain valve, and 15- is filtered out
Clear liquid area, 16- check-valves, 17- filtrates delivery pump, that is, pneumatic diaphragm pump, 18- filter presses, 19- feeding pipes, 20- pre-filterings are dense
Compression apparatus, 21- electropneumatic ball valves, 22-PLC, that is, programmable logic controller (PLC), 23- automatic control devices.
Specific implementation mode
Just scheming represented embodiment below, the invention will be further described, but the present invention is not limited solely to this embodiment.
A kind of process and device of pre-filtering and filter press linkage fast filtering, including filtrate delivery pump 17, press filtration
The feeding pipe 19 of machine 18, filtrate delivery pump, that is, between pneumatic diaphragm pump 17 and filter press 18, in filtrate delivery pump 17 and press filtration
The pre-filtering enrichment facility 20 filtered in filter press equipped with quickening filtrate on feeding pipe 19 between machine 18；The pre-filtering
Enrichment facility 20 includes tank body 8, and filtrate area 13 is equipped in tank body 8, filters out clear liquid area 15, the filtrate area 13 of tank body 8 was built-in with
Strainer 9, the bottom end of tank body 8 is equipped with filtrate import 1, the top of tank body 8 is equipped with concentrated dense filtrate outlet 2, the middle part of tank body 8
Equipped with pulse compressed air input channel 5, kept off equipped with back flushing air at the 5 import position of pulse compressed air input channel of tank body 8
The lower part of plate 11, tank body 8 is equipped with filtered clear water output channel 7.
Equipped with filtrate inlet valve 12, check-valves 16 in filtrate import 1, dense filtrate outlet 2 is equipped with filtrate pressure gauge 4, pneumatic
Enrichment materials outlet valve 10, equipped with recoil compressed air atmospheric pressure table 3, pulse air import on pulse compressed air input channel 5
Valve 6, equipped with concentrating out clear water drain valve 14 on clear water output channel 7.
The filter screen 9 is a kind of three layer of 304 stainless steel sintered meshwork in 10 μm of the aperture of pressure resistance.
The pulse air inlet valve 6 concentrates out clear water drain valve 14, filtrate inlet valve 12, Pneumatic concentration material outlet
The unlatching of valve 10 is carried out automatically controlling using electropneumatic ball valve 21 by PLC, that is, programmable logic controller (PLC) 22.
PLC, that is, programmable logic controller (PLC) 22 of the filtrate delivery pump 17, filter press 18, pre-filtering enrichment facility 20
Connect with an automatic control device 23, realize filtrate delivery pump 17, filter press 18,20 three of pre-filtering enrichment facility coordination from
Dynamic operation.The filtrate is the high filtrate of toughness.
Claims (7)
1. the process and device of a kind of pre-filtering and filter press linkage fast filtering, including filtrate delivery pump（17）, press filtration
Machine（18）, filtrate delivery pump（17）With filter press（18）Between feeding pipe（19）, which is characterized in that in filtrate delivery pump
（17）With filter press（18）Between feeding pipe（19）The upper pre-filtering enrichment facility filtered in filter press equipped with quickening filtrate
（20）；The pre-filtering enrichment facility（20）Including tank body（8）, tank body（8）It is interior to be equipped with filtrate area（13）, filter out clear liquid area
（15）, tank body（8）Filtrate area（13）It is built-in with filter screen（9）, tank body（8）Bottom end be equipped with filtrate import（1）, tank body（8）
Top be equipped with concentrated dense filtrate and export（2）, tank body（8）Middle part be equipped with pulse compressed air input channel（5）, in tank
Body（8）Pulse compressed air input channel（5）Import position is equipped with back flushing air baffle（11）, tank body（8）Lower part be equipped with
Clear water output channel after filter（7）.
2. the process and device of a kind of pre-filtering according to claim 1 and filter press linkage fast filtering, special
Sign is：Filtrate import（1）It is upper that filtrate inlet valve is housed（12）, check-valves（16）, dense filtrate outlet（2）Equipped with filtrate pressure gauge
（4）, Pneumatic concentration material outlet valve（10）, pulse compressed air input channel（5）It is upper that recoil compressed air pressure gauge is housed（3）,
Pulse air inlet valve（6）, clear water output channel（7）It is upper to clear water valve equipped with Pneumatic concentration（14）.
3. the process and device of a kind of pre-filtering according to claim 1 or 2 and filter press linkage fast filtering,
It is characterized in that：The filter screen（9）For it is a kind of pressure resistance, single-layer or multi-layer filter screen, Multilayer Network be different pore size from big to small
It is combined into, material can use biologically inert Fiber Materials, ceramics or stainless steel.
4. the process and device of a kind of pre-filtering according to claim 2 and filter press linkage fast filtering, special
Sign is：The pulse air inlet valve（6）, Pneumatic concentration clear water valve（14）, filtrate inlet valve（12）, Pneumatic concentration raw material
Outlet valve（10）Open and close use electropneumatic ball valve（21）Pass through PLC, that is, programmable logic controller (PLC)（22）It carries out certainly
Dynamic control.
5. the process and device of a kind of pre-filtering according to claim 4 and filter press linkage fast filtering, special
Sign is：The filter screen（9）5-20 μm of aperture, single-layer or multi-layer stainless steel sintered meshwork or three layer of 316 stainless steel sintered meshwork
Or foam ceramic filter.
6. the process and device of a kind of pre-filtering according to claim 4 and filter press linkage fast filtering, special
Sign is：The filtrate delivery pump（17）, filter press（18）, pre-filtering enrichment facility（20）PLC, that is, programmable logic control
Device processed（22）With an automatic control device（23）Filtrate delivery pump is realized in connection（17）, filter press（18）, pre-filtering enrichment facility
（20）The coordination automatic running of three.
7. the process and device of a kind of pre-filtering according to claim 1 and filter press linkage fast filtering, special
Sign is：The filtrate is the high filtrate of toughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038083.8A CN108786263A (en) | 2018-09-06 | 2018-09-06 | A kind of process and device of pre-filtering and filter press linkage fast filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038083.8A CN108786263A (en) | 2018-09-06 | 2018-09-06 | A kind of process and device of pre-filtering and filter press linkage fast filtering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108786263A true CN108786263A (en) | 2018-11-13 |
Family
ID=64081869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811038083.8A Pending CN108786263A (en) | 2018-09-06 | 2018-09-06 | A kind of process and device of pre-filtering and filter press linkage fast filtering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108786263A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020186684A1 (en) * | 2019-03-15 | 2020-09-24 | 菲立化学工程(遂昌)有限公司 | Pressure filtration system |
| CN113877298A (en) * | 2021-09-10 | 2022-01-04 | 徐州汉晨机械制造有限公司 | Mud treatment facility for engineering construction |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
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| RJ01 | Rejection of invention patent application after publication |