CN114028865B - Double-blowing system for distribution head of vacuum disc type filter - Google Patents
Double-blowing system for distribution head of vacuum disc type filter Download PDFInfo
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- CN114028865B CN114028865B CN202111263028.0A CN202111263028A CN114028865B CN 114028865 B CN114028865 B CN 114028865B CN 202111263028 A CN202111263028 A CN 202111263028A CN 114028865 B CN114028865 B CN 114028865B
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- liquid level
- pipeline
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- 238000007664 blowing Methods 0.000 title claims abstract description 75
- 238000009826 distribution Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 92
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000005213 imbibition Methods 0.000 claims abstract 8
- 239000004744 fabric Substances 0.000 claims description 42
- 239000012065 filter cake Substances 0.000 claims description 34
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 description 13
- 230000002035 prolonged effect Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/17—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables
- B01D33/19—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables the table surface being divided in successively tilted sectors or cells, e.g. for discharging the filter cake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/66—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A distribution head double-blowing system of a vacuum disc type filter comprises a distribution head, wherein the upper part of the distribution head is provided with a drying area and a liquid level upper blowing area, a drying area liquid discharge pipe is arranged at the drying area, a first pipeline and a second pipeline are arranged at the liquid level upper blowing area, a first valve is arranged on the first pipeline and connected with the drying area liquid discharge pipe, and a second valve is arranged on the second pipeline and connected with a compressed air system; the distribution head lower part is equipped with imbibition district and liquid level down the district of blowing, and imbibition district department is equipped with imbibition district fluid-discharge tube, and liquid level down the district department of blowing is equipped with third pipeline and fourth pipeline, is equipped with the fourth valve on the fourth pipeline and is connected with imbibition district fluid-discharge tube, is equipped with the third valve on the third pipeline and is connected with compressed air system. The adaptability of the vacuum disc filter to various materials is greatly improved, the use bottleneck of the vacuum disc dehydrator is overcome, and the disc filter has more market prospect.
Description
The technical field is as follows:
the invention belongs to the technical field of vacuum disc type filters, and particularly relates to a distribution head double-blowing system of a vacuum disc type filter.
Background art:
the vacuum disc type filter is widely applied to filtering and separating different-grade solid particles such as desulfurized gypsum in a thermal power plant, concentrate in the mine industry, tailings and the like.
The filter medium of the vacuum disc filter is filter cloth, and a plurality of sector plates provided with the filter cloth are arranged on the central shaft to form the filter disc. The filter disc slowly runs in the slurry tank body, and solid particles form a filter cake on the filter cloth under the action of vacuum negative pressure. The filter cake reaches a discharge bin after being sucked dry, and is discharged through a scraper and a blowing discharge device, so that solid-liquid separation of the materials is realized. One working cycle of the traditional vacuum disc type filter corresponds to one cycle of three working subareas, namely a liquid suction area, a dry suction area and a single air blowing area of a distribution head of the disc type filter. The original blowing area is positioned above the liquid level and is connected with an external compressed air pipeline system to achieve discharging.
Different thermal power plants and mines have different material densities and particle sizes due to the difference of raw ore and production process system control. In the original vacuum disc type filter, in order to ensure the sufficient vacuum degree of the system, a single blowing system adopts interval blowing instead of continuous blowing for discharging. The filter disc can only partially discharge, and the filter cloth can not be recycled, so that the yield is not up to the standard. And the filter cake adsorbs on the filter cloth for a long time, the filter cake is seriously firm due to one-step extrusion at the scraper, the filter cloth is extremely easy to block, the service life of the filter cloth is seriously shortened, the filter cloth is frequently replaced, and the use cost is improved. In addition, the single blowing area occupies a part of the angle of the whole circumference of the distribution head, the dry absorption area can be correspondingly reduced, the water content of the filter cake which is an important technical index of solid-liquid separation is further high, and the production of the whole process system is influenced. Due to the control bottleneck of the single blowing system, the liquid level of the slurry tank is difficult to control, liquid level overflow or liquid level is low, and the production of a subsequent process system is influenced.
The invention content is as follows:
in order to overcome the defects, the invention provides a distribution head double-blowing system of a vacuum disc type filter.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a distribution head double-blowing system of a vacuum disc type filter comprises a distribution head, wherein the upper part of the distribution head is provided with a drying area and a liquid level upper blowing area, a drying area liquid discharge pipe is arranged at the drying area, a first pipeline and a second pipeline are arranged at the liquid level upper blowing area, a first valve is arranged on the first pipeline and connected with the drying area liquid discharge pipe, and a second valve is arranged on the second pipeline and connected with a compressed air system; the lower part of the distribution head is provided with a liquid suction area and a liquid level downward blowing area, a liquid suction area liquid discharge pipe is arranged at the liquid suction area, a third pipeline and a fourth pipeline are arranged at the liquid level downward blowing area, a fourth valve is arranged on the fourth pipeline and connected with the liquid suction area liquid discharge pipe, and a third valve is arranged on the third pipeline and connected with a compressed air system.
According to the material properties, the productivity and the water content of the filter cake can be controlled by controlling the first valve, the second valve, the third valve and the fourth valve, so that the production requirements are met.
The first valve, the second valve and the fourth valve are closed, the third valve is opened at intervals, so that the separated blowing of the blowing area under the liquid level is realized, and the regeneration function of the filter cloth part is provided under the liquid level.
The first valve is opened, the second valve is closed, and the liquid level upper blowing area is communicated with the drying area, so that the area of the drying area is increased; the third valve is opened and the fourth valve is closed, the blowing area under the liquid level blows air continuously, and the function of completely regenerating the filter cloth is provided under the liquid level.
The first valve and the fourth valve are closed, the second valve and the third valve are opened, the liquid level upper blowing area can fully discharge materials, and the liquid level lower blowing area can completely regenerate the filter cloth.
The second valve and the third valve are closed, and the first valve and the fourth valve are opened, so that the suction drying time and the washing liquid time are increased, and the filter cake adsorbed by the filter cloth in the slurry is thicker, so that the productivity is increased.
Due to the adoption of the technical scheme, the invention has the following advantages:
1) The feeding quantity is normal and stable, when the material property is better, the filter cake on the filter cloth is thicker, the production requirement can be met only by discharging with the scraper, only the third valve needs to be opened, the blowing area under the liquid level is connected with the compressed air system, partial regeneration of the filter cloth is provided under the liquid level, the high-vacuum degree operation of the system can be maintained, the capacity can be increased, and the moisture of the filter cake can be reduced. Can also keep the filter medium filter cloth clean thoroughly and prolong the service life.
2) Under the normal operating condition of vacuum disc filter, need further to improve the thick liquid handling capacity, increase productivity and require the lower moisture of filter cake time, need open first valve, the area that occupies great dry zone has just been avoided in the liquid level upper blowing district, has prolonged the filter cake and has inhaled dry time, very big reduction filter cake moisture. And opening the third valve, completely dropping the filter cake adsorbed on the filter cloth in the slurry tank under the liquid level, adsorbing the thicker filter cake on the filter cloth again, and discharging at the discharging position of the scraper.
3) When the material property is bad, the capacity of the vacuum disc type filter is very easily limited, and a large amount of slurry tanks overflow easily. And the discharging capacity can not be met completely only by depending on the scraper, and the second valve and the third valve are opened, so that the liquid level up blowing area and the liquid level down blowing area are connected to a compressed air system and are blown simultaneously. The filter cake is thoroughly dropped into the blanking bin through the liquid level upper blowing area, and the productivity is increased. And through the liquid level downward blowing area, the filter cloth is thoroughly cleaned, and new filter cakes are adsorbed again.
4) In order to avoid frequent blowing to damage the filter cloth, the blowing frequency needs to be reduced or blowing is stopped, the yield is ensured only by discharging by virtue of the scraper, the fourth valve needs to be opened to increase the liquid suction time, and the adsorption capacity of filter cakes on the filter cloth is increased.
5) The production capacity cannot reach the standard only by a single scraper due to different material properties, and the service life of the filter cloth is prolonged. The second valve can be opened, the pressure of compressed air and the air input are reduced through the second valve, the blowing pressure can reach the condition that the filter cloth only swells, the filter cake can just fall off, the filter cloth on the filter cloth completely falls off, and the productivity is increased.
6) The double-blowing system of the distributing head of the vacuum disc type filter greatly improves the adaptability of the vacuum disc type filter to various materials, overcomes the use bottleneck of a vacuum disc type dehydrator, and ensures that the disc type filter has more market prospect.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1. a dispensing head; 2. a drying area; 3. sucking a liquid discharge pipe in the dry area; 4. a first valve; 5. a second valve; 6. a compressed air system; 7. a liquid level up-blowing area; 8. a third valve; 9. a liquid level down blowing area; 10. a fourth valve; 11. a liquid discharge pipe in the liquid suction area; 12. a liquid suction zone; 13. a liquid level surface; 14. a first conduit; 15. a second pipe; 16. a third pipeline; 17. a fourth conduit.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The distribution head double-blowing system of the vacuum disc type filter comprises a distribution head 1, wherein the upper part of the distribution head 1 is provided with a dry absorbing area 2 and a liquid level upper blowing area 7, a dry absorbing area liquid discharge pipe 3 is arranged at the dry absorbing area 2, a first pipeline 14 and a second pipeline 15 are arranged at the liquid level upper blowing area 7, a first valve 4 is arranged on the first pipeline 14 and connected with the dry absorbing area liquid discharge pipe 3, and a second valve 5 is arranged on the second pipeline 15 and connected with a compressed air system 6; the lower part of the distribution head 1 is provided with a liquid suction area 12 and a liquid level downdraft area 9, the liquid suction area 12 is provided with a liquid discharge pipe 11, the liquid level downdraft area 9 is provided with a third pipeline 16 and a fourth pipeline 17, the fourth pipeline 17 is provided with a fourth valve 10 and is connected with the liquid suction area liquid discharge pipe 11, and the third pipeline 16 is provided with a third valve 8 and is connected with the compressed air system 6.
According to the material properties, the productivity and the filter cake moisture can be controlled by controlling the first valve 4, the second valve 5, the third valve 8 and the fourth valve 10, and the production requirements are met.
In the first embodiment, the feeding amount is normal and stable, when the material property is good, the filter cake on the filter cloth is thick, the production requirement can be met only by discharging with the scraper, the third valve 8 is opened at intervals, the liquid level lower blowing area 9 is connected with the compressed air system 6, and the filter cloth is partially regenerated under the liquid level surface 13, so that the high-vacuum degree operation of the system can be maintained, the capacity can be increased, the water content of the filter cake can be reduced, the thorough cleaning of the filter medium filter cloth can be maintained, and the service life can be prolonged.
In the second embodiment, under the normal operation condition of the vacuum disc filter, the slurry treatment capacity needs to be further improved, when the productivity is increased and the filter cake is required to be lower in water content, the first valve 4 needs to be opened, and the second valve 5 needs to be closed, so that the liquid level upper blowing area 7 is communicated with the drying area 2, the area of the drying area 7 is increased, the filter cake drying time is prolonged, and the water content of the filter cake is greatly reduced. And opening the third valve 8 and closing the fourth valve 10, continuously blowing air in the liquid level downward blowing area 9, enabling filter cakes adsorbed on the filter cloth to completely fall off in the slurry tank under the liquid level surface 13, enabling the filter cloth to adsorb thicker filter cakes again in the liquid absorption area 12, and discharging at the discharging position of the scraper.
In the third embodiment, when the material property is bad, the capacity of the vacuum disc type filter is very easily limited, and a large amount of slurry tank overflow is easy to occur. The discharging capacity can not be met by only depending on the scraper, the second valve 5 and the third valve 8 are opened, and the liquid level upper blowing area 7 and the liquid level lower blowing area 9 are connected to the compressed air system 6 to blow simultaneously. The filter cake is thoroughly dropped into the blanking bin through the liquid level upper blowing area 7, and the productivity is increased. Through the liquid level down-blowing zone 9, the filter cloth is thoroughly cleaned and new filter cakes are re-adsorbed.
In the fourth embodiment, different material properties are adopted, so that the filter cloth is prevented from being damaged by frequent blowing, the discharging is carried out only by scraping materials by a scraper, and the yield and the moisture are required to reach the standard. The second valve 5 and the third valve 8 are closed, and the first valve 4 and the fourth valve 10 are opened. Firstly, the liquid level upper blowing area 7 is communicated with the suction drying area 2, so that the suction drying time is prolonged, and the moisture of a filter cake is further reduced; and secondly, the liquid level downdraft zone 9 is communicated with the liquid absorption zone 12, so that the liquid absorption time is prolonged, and a filter cake absorbed by the filter cloth in the slurry is thicker, thereby increasing the productivity.
In the fifth embodiment, in order to avoid frequent blowing to damage the filter cloth, the blowing frequency needs to be reduced or blowing is stopped, discharging is carried out only by a scraper to ensure the productivity, the first valve 4, the second valve 5 and the third valve 8 can be closed, the fourth valve 10 is opened, the liquid level lower blowing area 9 is communicated with the liquid absorption area 12, the liquid absorption time is prolonged, and the adsorption capacity of filter cakes on the filter cloth is increased.
In the sixth embodiment, the production capacity of different materials cannot reach the standard only by a single scraper, and the service life of the filter cloth is prolonged. At the moment, the second valve 5 can be opened, the first valve 4, the third valve 8 and the fourth valve 10 are closed, the pressure of compressed air and the air inflow are reduced through the second valve 5, the blowing pressure can reach only 'bulging' of the filter cloth, the filter cake can just fall off, the filter cloth on the filter cloth completely falls off, and the productivity is increased.
The double-blowing system of the distributing head of the vacuum disc type filter greatly improves the adaptability of the vacuum disc type filter to various materials, overcomes the use bottleneck of a vacuum disc type dehydrator, and ensures that the disc type filter has more market prospect.
The details of the above are not described in detail since they are prior art.
Claims (6)
1. The utility model provides a distribution head double blow system of vacuum disk filter which characterized in that: the device comprises a distribution head, wherein the upper part of the distribution head is provided with a dry absorbing area and a liquid level upper blowing area, a dry absorbing area liquid discharge pipe is arranged at the dry absorbing area, a first pipeline and a second pipeline are arranged at the liquid level upper blowing area, a first valve is arranged on the first pipeline and connected with the dry absorbing area liquid discharge pipe, and a second valve is arranged on the second pipeline and connected with a compressed air system; the distribution head lower part is equipped with imbibition district and liquid level down the district of blowing, and imbibition district department is equipped with imbibition district fluid-discharge tube, and liquid level down the district department of blowing is equipped with third pipeline and fourth pipeline, is equipped with the fourth valve on the fourth pipeline and is connected with imbibition district fluid-discharge tube, is equipped with the third valve on the third pipeline and is connected with compressed air system.
2. The distribution head double blowing system of a vacuum disc filter as set forth in claim 1, wherein: according to the material properties, the productivity and the filter cake moisture can be controlled by controlling the first valve, the second valve, the third valve and the fourth valve, so that the production requirements are met.
3. The distribution head double blowing system of a vacuum disc filter as set forth in claim 2, wherein: the first valve, the second valve and the fourth valve are closed, the third valve is opened at intervals, so that the separated blowing of the blowing area under the liquid level is realized, and the regeneration function of the filter cloth part is provided under the liquid level.
4. The distribution head double blowing system of a vacuum disc filter as set forth in claim 2, wherein: the first valve is opened, the second valve is closed, and the liquid level upper blowing area is communicated with the drying area, so that the area of the drying area is increased; the third valve is opened and the fourth valve is closed, the liquid level lower blowing area blows air continuously, and the function of completely regenerating the filter cloth is provided under the liquid level.
5. The distribution head double blowing system of a vacuum disc filter as set forth in claim 2, wherein: the first valve and the fourth valve are closed, the second valve and the third valve are opened, the liquid level upper blowing area can fully discharge materials, and the liquid level lower blowing area can completely regenerate the filter cloth.
6. The distribution head double blowing system of a vacuum disc filter as set forth in claim 2, wherein: the second valve and the third valve are closed, and the first valve and the fourth valve are opened, so that the suction drying time and the washing liquid time are increased, and the filter cake adsorbed by the filter cloth in the slurry is thicker, so that the productivity is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263028.0A CN114028865B (en) | 2021-10-28 | 2021-10-28 | Double-blowing system for distribution head of vacuum disc type filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263028.0A CN114028865B (en) | 2021-10-28 | 2021-10-28 | Double-blowing system for distribution head of vacuum disc type filter |
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| Publication Number | Publication Date |
|---|---|
| CN114028865A CN114028865A (en) | 2022-02-11 |
| CN114028865B true CN114028865B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111263028.0A Active CN114028865B (en) | 2021-10-28 | 2021-10-28 | Double-blowing system for distribution head of vacuum disc type filter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5615494A (en) * | 1994-04-19 | 1997-04-01 | Outokumpu Mintec Oy | Apparatus for treating a filter cake |
| CN105999818A (en) * | 2016-07-06 | 2016-10-12 | 中信重工机械股份有限公司 | Discharging control device and method of disk filter |
| CN107986307A (en) * | 2017-12-29 | 2018-05-04 | 重庆市南川区先锋氧化铝有限公司 | A kind of vacuum type filtration apparatus that turns over for the production of red mud alumina by sintering |
| CN108854231A (en) * | 2018-09-19 | 2018-11-23 | 中冶北方（大连）工程技术有限公司 | The low product moisture disk filter of fine- disseminated ore |
| CN208893766U (en) * | 2018-09-20 | 2019-05-24 | 高良玉 | A kind of double blowing unloading systems of disk filter |
-
2021
- 2021-10-28 CN CN202111263028.0A patent/CN114028865B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5615494A (en) * | 1994-04-19 | 1997-04-01 | Outokumpu Mintec Oy | Apparatus for treating a filter cake |
| CN105999818A (en) * | 2016-07-06 | 2016-10-12 | 中信重工机械股份有限公司 | Discharging control device and method of disk filter |
| CN107986307A (en) * | 2017-12-29 | 2018-05-04 | 重庆市南川区先锋氧化铝有限公司 | A kind of vacuum type filtration apparatus that turns over for the production of red mud alumina by sintering |
| CN108854231A (en) * | 2018-09-19 | 2018-11-23 | 中冶北方（大连）工程技术有限公司 | The low product moisture disk filter of fine- disseminated ore |
| CN208893766U (en) * | 2018-09-20 | 2019-05-24 | 高良玉 | A kind of double blowing unloading systems of disk filter |
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| Publication number | Publication date |
|---|---|
| CN114028865A (en) | 2022-02-11 |
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Effective date of registration: 20240401 Address after: 471000 No. 206, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: CITIC HEAVY INDUSTRIES Co.,Ltd. Country or region after: China Patentee after: Luoyang Mining Machinery Engineering Design Institute Co.,Ltd. Patentee after: CITIC Corporation of China Address before: 471000 No. 206, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: CITIC HEAVY INDUSTRIES Co.,Ltd. Country or region before: China Patentee before: Luoyang Mining Machinery Engineering Design Institute Co.,Ltd. |