CN112479549B - Filter-pressing drying equipment for heating sludge by penetrating hot gas - Google Patents
Filter-pressing drying equipment for heating sludge by penetrating hot gas Download PDFInfo
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- CN112479549B CN112479549B CN202010914979.9A CN202010914979A CN112479549B CN 112479549 B CN112479549 B CN 112479549B CN 202010914979 A CN202010914979 A CN 202010914979A CN 112479549 B CN112479549 B CN 112479549B
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- filter
- filter plate
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- pipeline
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Abstract
The invention relates to a filter-pressing drying device heated by hot gas penetrating sludge, which comprises a plurality of first filter plates and a plurality of second filter plates, wherein the first filter plates and the second filter plates are overlapped and moved back and forth in a staggered manner and lean against each other, the front and back surfaces of each first filter plate and each second filter plate are respectively provided with a filter chamber and a sludge inlet, one side of each first filter chamber of each first filter plate is communicated with an external hot gas pipeline, the other side of each second filter chamber of each second filter plate is communicated with an external exhaust pipeline, the hot gas enters one side of each filter chamber of each first filter plate through the hot gas pipeline, the hot gas is enabled to penetrate towards the second filter plate completely and contact the heated sludge, and then the sludge is discharged from the other side of each filter chamber of each second filter plate and the exhaust pipeline, so that the sludge can be dehydrated really, the dryness of the sludge is improved, the filter-pressing drying efficiency is increased, and the sludge treatment cost is reduced.
Description
Technical Field
The invention relates to a filter-pressing drying device, in particular to a filter-pressing drying device which utilizes hot gas to penetrate through sludge for heating.
Background
At present, a filter press unit type filter press for sludge and other various filter materials is characterized in that a plurality of groups of filter press units which can be movably separated and overlapped in a displacement mode are placed on a machine table rail, each filter press unit is provided with two side filter chambers and a sludge inlet which is communicated, and the two side filter chambers are respectively covered with filter cloth which is communicated through the sludge inlet.
In the actual sludge press filtration process, all the press filtration units are overlapped with the filter cloth and lean against the filter cloth, the peripheries of every two filter cloths are closed, water-containing sludge is pumped into a sludge inlet of each press filtration unit and each filter cloth by a pump, the water-containing sludge is continuously extruded, sewage flows out through the filter cloth and a sewage drainage hole, and the sludge is wrapped in the filter chamber by the filter cloth, so that the purpose of extrusion dehydration is achieved. However, the simple squeezing dehydration method can only achieve the sludge dryness with the water content of 60-86%, the sludge volume and the occupied space cannot be more effectively reduced, and the subsequent transportation and the reprocessing cost are high.
In order to improve the defects of the simple squeezing dehydration mode, a hot gas heating structure is added in a filter pressing unit of a filter press nowadays, so that moisture contained in sludge is gasified into steam, and the dryness of the sludge is improved. However, the hot gas heating structure of the filter press in the filter pressing unit needs to use a large amount of heat energy, and the hot gas cannot penetrate and contact with the heated sludge in a full-face manner, so that the sludge drying efficiency is affected, the filter pressing operation cost is relatively increased, and the heat energy resource is wasted. Therefore, how to solve the above problems is the subject of the urgent research of the related industry.
Disclosure of Invention
The main purpose of the invention is that each first filter plate is heated by hot gas to fully penetrate and contact with the sludge towards the second filter plate, so that the sludge can be dehydrated reliably, the dryness of the sludge is improved, the filter-pressing drying efficiency is increased, and the equipment cost and the sludge treatment operation cost are reduced.
The invention relates to a filter-pressing drying device for heating sludge by penetrating hot gas, which comprises a plurality of first filter plates and second filter plates which are opposite in the same direction, wherein each first filter plate and each second filter plate are sequentially overlapped and moved in a staggered manner, the front and the back of each first filter plate and each second filter plate are respectively provided with a filter chamber, each filter chamber is provided with the same side and the opposite side, a plurality of flow guide grooves which are communicated with each other are respectively arranged in each filter chamber, a sludge inlet which is communicated with the front and the back is arranged in each filter chamber so as to correspondingly communicate with an external sludge slurry pipeline, and the sludge slurry is filled in each filter chamber of each first filter plate and each second filter plate to be extruded and dehydrated into sludge; one side of the two filter chambers of each first filter plate is communicated with an external hot air pipeline, the other side, opposite to the two filter chambers, of each second filter plate is communicated with an external exhaust pipeline, the hot air pipeline is connected with a hot air source to supply hot air to enter one side of the two filter chambers of each first filter plate and each flow guide groove through the hot air pipeline, so that the hot air is in full-face penetrating contact with each second filter plate to heat sludge, the hot air and the sludge are subjected to heat exchange to form warm waste gas, the warm waste gas enters each flow guide groove of the two filter chambers of each second filter plate, and then the warm waste gas is exhausted from the other side of the two filter chambers of each second filter plate and the exhaust pipeline.
In the above filter-pressing drying apparatus heated by penetrating the sludge with hot gas, one side of the two filter chambers of each first filter plate is communicated with a hot gas inlet, and the hot gas pipeline is connected to each hot gas inlet; the other side of the two filter chambers of each second filter plate is communicated with an exhaust hole, and the exhaust pipeline is respectively connected with each exhaust hole.
In the filter-pressing drying device utilizing hot air to penetrate through sludge for heating, the two sides of each first filter plate and the two sides of each second filter plate are respectively and correspondingly provided with the sewage drainage hole which is communicated with one side of the corresponding two filter chambers, and the sewage drainage hole on the other side of each second filter plate is communicated with the other side of the corresponding two filter chambers.
Aforesaid utilize steam to pierce through filter-pressing drying equipment of mud heating, wherein this sewage hole of this each first filter plate and this second filter plate one side is toward outer being connected with first row of sewage pipeline and sewage control valve, this sewage hole of this each first filter plate and this second filter plate opposite side is toward outer being connected with second row of sewage pipeline, this hot gas pipeline is equipped with hot air control valve and is connected in this first row of sewage pipeline, make steam by outer this sewage hole of going inward through this each first filter plate and this second filter plate one side, and steam gets into this two straining chamber one sides and each this water conservancy diversion ditch of each this first filter plate via this sewage hole of this each this first filter plate one side.
In the above filter-pressing drying apparatus using hot air to penetrate through sludge for heating, the two filter chambers of each of the first filter plate and the second filter plate are coated with membranes respectively, the flow guide grooves of the two filter chambers are formed on the surfaces of the two membranes, an external air pressure pipeline is connected between the two filter chambers, the air pressure pipeline is connected with a compressed air source and a control valve, the compressed air source outputs compressed air to the space between the two membranes of the two filter chambers, and the two membranes are externally stretched to expand sludge slurry inside the two filter chambers.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the filter press drying apparatus of the present invention.
Fig. 2 is a cross-sectional view of the filter press drying apparatus of the present invention driving the filter plates together.
Fig. 3 is a perspective view of a first filter plate of the filter press drying apparatus of the present invention.
Fig. 4 is a perspective view of a second filter plate of the filter press drying apparatus of the present invention.
FIG. 5 is a sectional view of the press filtration drying apparatus of the present invention for extruding sludge slurry.
FIG. 6 is a sectional view showing the sludge slurry squeezed by the pneumatic expanding membrane of the filter press drying apparatus of the present invention.
FIG. 7 is a sectional view of the filter press drying apparatus of the present invention for drying sludge by hot air.
Description of the reference numerals
1. Frame 4, sludge slurry pipeline
11. Fixing seat 5 and first sewage drainage pipeline
12. Movable seat 51 and sewage control valve
13. Oil hydraulic cylinder 52 and a second sewage draining pipeline
2. First filter plate 6, pneumatic pipeline
20. Second filter plate 61, compressed air source
21. Plate body 62 and control valve
22. Filter chamber 63, control valve
221. Filter chamber hole 7 and hot gas pipeline
222. Filter chamber orifice 71, hot gas source
23. Diaphragm 72, hot gas control valve
231. Flow guide groove 73 and hot gas control valve
24. Branch element 8, exhaust pipe
25. Sludge inlet 9, sludge slurry
26. Sewage outlet 91, sludge
261. Drain hole
27. Air inlet hole
28. Air vent
29. Air pressure hole
3. And (7) filtering the cloth.
Detailed Description
To achieve the above objects, the present invention provides a technical means and its effects, which are described below with reference to the accompanying drawings as follows:
first, referring to fig. 1 to 5, as can be clearly seen from the drawings, the filter press drying device of the present invention has a plurality of first filter plates 2 and second filter plates 20 straddling over rails on both sides of a frame 1, each of the first filter plates 2, the second filter plates 20 and filter cloth 3 being sequentially controlled by a pulling and feeding clamp to move horizontally and overlap and lean against each other, and being externally connected with a sludge slurry pipeline 4, a first sewage discharge pipeline 5, a second sewage discharge pipeline 52, an air pressure pipeline 6, a hot air pipeline 7 and an exhaust pipeline 8, and being forcibly positioned by applying force with a fixed seat 11, a movable seat 12 and an oil pressure cylinder 13 thereof, wherein:
the first filter plates 2 and the second filter plates 20 are opposite in the same direction, the first filter plates 2 and the second filter plates 20 are sequentially overlapped and moved back and forth in a staggered manner, filter chambers 22 and filter cloth 3 are respectively arranged on the front and back surfaces of the first filter plates 2 and the second filter plates 20, and supporting pieces 24 are respectively fixed on the two sides of the first filter plates and the second filter plates. Each filter chamber 22 has the same side and the opposite side, and each filter chamber 22 is provided with a plurality of mutually communicated flow guide grooves 231, each plate body 21 is oppositely coated with a membrane 23 in each filter chamber 22, the periphery of the membrane 23 is fixedly connected and positioned with the plate body 21, and the flow guide grooves 231 of each filter chamber 22 are formed on the surfaces of the two membranes 23. A sludge inlet 25 which is communicated with the front and the back is arranged in each two filter chambers 22, the two sides of each first filter plate 2 and each second filter plate 20 are respectively and correspondingly provided with a sewage discharge hole 26 and a sewage discharge hole 261 which are communicated with the front and the back, the sewage discharge hole 26 on one side of the first filter plate 2 is communicated with one side of the corresponding two filter chambers 22 through a filter chamber hole 221, and the sewage discharge hole 261 on the other side of the first filter plate 2 is not communicated with the filter chamber hole 222 on the other side of the filter chamber 22; the drain hole 261 on the opposite side of the second filter sheet 20 communicates with the other side of the corresponding two filter chambers 22 via the chamber hole 222, and the drain hole 26 on the one side of the second filter sheet 20 does not communicate with the chamber hole 221 on the one side of the filter chamber 22. The first filter plate 2 and the second filter plate 20 have air pressure holes 29 between the plate bodies 21 and the diaphragms 23 of the filter chambers 22, and the filter chambers 22 of the first filter plate 2 have inlet air holes 27 communicating with each other through the filter chamber holes 221, and the filter chambers 22 of the second filter plate 20 have outlet air holes 28 communicating with each other through the filter chamber holes 222.
The sludge slurry pipeline 4 is communicated with the sludge inlets 25 of the first filter plate 2 and the second filter plate 20.
The first and second sewage pipes 5 and 52 are connected to the respective first and second filter plates 2 and 20 such that the sewage holes 26 at one sides of the respective first and second filter plates 2 and 20 are connected to the first sewage pipe 5 and the sewage control valve 51, and the sewage holes 261 at the other sides of the respective first and second filter plates 2 and 20 are connected to the second sewage pipe 52.
A compressed air source 61 and control valves 62 and 63 are connected to the pneumatic line 6, and compressed air is supplied to the pneumatic holes 29 connecting the plate bodies 21 and the filter chamber 22.
The hot gas pipeline 7 is connected to a hot gas source 71 and a hot gas control valve 72 to connect to the hot gas inlet 27 of each first filter plate 2 on one side of the two filter chambers 22, so that hot gas enters the two filter chambers 22 of each first filter plate 2. The hot air pipe 7 may be provided with a hot air control valve 73 connected to the first drain pipe 5 so that the hot air may additionally pass through the drain holes 26 of the first filter plates 2 and the second filter plates 20 from the outside to the inside, and the drain water control valve 51 is closed in cooperation so that the hot air may pass through the drain holes 26 and the filter chamber holes 221 of the first filter plates 2 to enter the two filter chambers 22 of the first filter plates 2 and the flow guide grooves 231.
The exhaust line 8 is connected to the exhaust hole 28 of each second filter plate 20 on the other side of the two filter chambers 22.
In practical operation of the filter press drying device of the present invention, please refer to fig. 1 to 4, the movable seat 12 of the filter press drying device drives each of the first filter plate 2 and the second filter plate 20 to move, so that all the first filter plate 2 and the second filter plate 20 are overlapped with the filter cloth 3 and close the periphery of two adjacent filter cloths 3. Referring to fig. 1 and 5, the sludge slurry 9 is fed into the sludge inlets 25 of the first filter plates 2 and the second filter plates 20 through the sludge slurry pipeline 4, and the sludge slurry 9 is continuously pushed to fill the filter chambers 22 for squeezing and dewatering, so that the water content of the sludge slurry 9 is gradually reduced, the sewage flows out through the filter cloth 3, the filter chamber holes 221 and 222, the sewage discharge holes 26 and 261, the first sewage discharge pipeline 5, the second sewage discharge pipeline 52 and the sewage discharge control valve 51, and the sludge 91 is wrapped in the filter chambers 22 by the filter cloth 3. When the filter press drying equipment continuously presses the sludge slurry 9 to discharge most of the sewage, please refer to fig. 1 and 6, the compressed air is respectively input into the air pressure holes 29 between the two diaphragms 23 of each plate body 21 through the control valves 62 by using the air pressure pipeline 6, and the two diaphragms 23 are expanded to press the sludge slurry 9 and the sludge 91 inside each filtering chamber 22, so that the sludge 91 is evenly distributed in the filtering chambers 22, and the hot air drying treatment is more easily performed.
When the filter-press drying device of the present invention is actually operated, the hot air pipeline 7 is started at a proper time, and the drain water control valve 51 of the first drain sewage pipeline 5 is closed, as shown in fig. 1 and 7, hot air continuously enters the hot air inlet 27 of each first filter plate 2, one side of each filter chamber 22 and each flow guide groove 231 through the hot air pipeline 7, so that the hot air penetrates and contacts the heated sludge 91 in a full-face manner toward each second filter plate 20 as shown by arrows in fig. 7, and the hot air and the sludge 91 are subjected to heat exchange to form warm exhaust gas, and then the warm exhaust gas enters each flow guide groove 231 of each filter chamber 22 of each second filter plate 20, and is discharged outside through the exhaust holes 28 on the other side of each filter chamber 22 of each second filter plate 20 and the exhaust pipeline 8, so that the sludge 91 can be dehydrated into a sludge cake state, thereby improving the dryness of the sludge 91, increasing the filter-press drying efficiency, and reducing the equipment cost and the sludge treatment operation cost. Finally, the filter press drying device opens the movable seat 12 (see fig. 1), and then the pulling and feeding clamp clamps and pulls the first filter plate 2, the second filter plate 20 and the filter cloth 3 one by one, so that the first filter plate 2 and the second filter plate 20 are separated and displaced in sequence, and the dehydrated sludge 91 is discharged from the filter chambers 22.
The above-described embodiments are intended to be illustrative, but not limiting, and various changes and modifications that may be made by those skilled in the art without departing from the spirit of the invention are intended to be included within the scope of the appended claims.
Claims (2)
1. A filter-pressing drying device heated by hot air penetrating sludge comprises a plurality of first filter plates and second filter plates which are opposite in the same direction, wherein each first filter plate and each second filter plate are sequentially overlapped and leaned in a front-back staggered manner, filter chambers are respectively arranged on the front and back surfaces of each first filter plate and each second filter plate, each filter chamber is provided with the same side and the opposite side, each filter chamber of each first filter plate and each second filter plate is coated with a membrane in a corresponding way, the surface of each membrane is provided with a plurality of flow guide grooves which are communicated with each other, an external air pressure pipeline is connected between each two filter chambers, the air pressure pipeline is connected with a compressed air source and a control valve, a sludge inlet which is communicated with the front and the back is arranged in each filter chamber, so that the sludge is correspondingly communicated with the external sludge pipeline, and is filled in each filter chamber of each first filter plate and each second filter plate for squeezing dehydration; the two sides of each first filter plate and each second filter plate are respectively and correspondingly provided with a sewage discharge hole which is communicated with the front and the back, the sewage discharge hole on one side of each first filter plate is communicated with one side corresponding to the two filter chambers, the sewage discharge hole on the opposite side of each second filter plate is communicated with the other side corresponding to the two filter chambers, one side of each two filter chambers of each first filter plate is communicated with an external hot air pipeline, the opposite side of each two filter chambers of each second filter plate is communicated with an external exhaust pipeline, the hot air pipeline is connected with a hot air source, the sewage discharge holes on one sides of each first filter plate and each second filter plate are externally connected with a first sewage discharge pipeline and a sewage discharge control valve, the sewage discharge holes on the other sides of each first filter plate and each second filter plate are externally connected with a second sewage discharge pipeline, and the hot air pipeline is provided with a hot air control valve which is connected with the first sewage discharge pipeline; the air pressure pipeline outputs compressed air to the space between the two diaphragms of the two filtering chambers by utilizing the compressed air source, and the two diaphragms are externally supported in the prior art to expand and extrude the sludge slurry in the two filtering chambers to be dehydrated into sludge; then hot air is supplied to pass through the hot air pipeline, the sewage control valve is closed, the hot air passes through the sewage discharge holes on one sides of the first filter plates and the second filter plates from outside to inside, the hot air enters one side of the two filter chambers of the first filter plates and the flow guide grooves of the two membranes through the sewage discharge holes on one side of the first filter plates, the hot air is enabled to penetrate and contact towards the second filter plates in a full-surface mode to heat the sludge, the hot air and the sludge are subjected to heat exchange to form warm waste air, the warm waste air enters the flow guide grooves of the two membranes of the two filter chambers of the second filter plates, and the warm waste air is discharged from the other side of the two filter chambers of the second filter plates and the exhaust pipeline.
2. A filter-press drying apparatus heated by hot gas penetrating sludge according to claim 1, wherein one side of the two filter chambers of each first filter plate is communicated with a hot gas inlet, and the hot gas pipeline is connected to each hot gas inlet; the other side of the two filter chambers of each second filter plate is communicated with an exhaust hole, and the exhaust pipeline is respectively connected with each exhaust hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910857902 | 2019-09-11 | ||
| CN201910857902X | 2019-09-11 |
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| Publication Number | Publication Date |
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| CN112479549A CN112479549A (en) | 2021-03-12 |
| CN112479549B true CN112479549B (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010914979.9A Active CN112479549B (en) | 2019-09-11 | 2020-09-03 | Filter-pressing drying equipment for heating sludge by penetrating hot gas |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455795B (en) * | 2022-03-06 | 2023-12-12 | 广州绿邦环境技术有限公司 | Filter press filter plate with sludge drying function |
| CN114873892A (en) * | 2022-05-24 | 2022-08-09 | 道诚环境科技(山东)有限公司 | Rotary sludge press-filtering and drying device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW426044U (en) * | 1999-10-15 | 2001-03-11 | Lu Ming Wang | Heating drawn type slurry compressed filtering drier with assembled plate frame |
| TW573692U (en) * | 2003-05-23 | 2004-01-21 | Ming-Wang Lu | Device for heating, evacuating, blowing and drying sludge pressure filtration device |
| TWM466916U (en) * | 2013-08-16 | 2013-12-01 | Ming-Wang Lu | Filter plate structure for sludge filter press |
| TWM466719U (en) * | 2013-08-16 | 2013-12-01 | Ming-Wang Lu | Structural improvement of filtration plate for sludge filter press |
| CN203494238U (en) * | 2013-09-04 | 2014-03-26 | 吕明旺 | Filter plate structure for sludge filter press |
| CN203494240U (en) * | 2013-09-04 | 2014-03-26 | 吕明旺 | Filter plate structure for sludge filter press |
| CN208234736U (en) * | 2018-03-02 | 2018-12-14 | 台湾卜力斯股份有限公司 | The pressure-filteration drying equipment of function is recycled with hot water and steam thermal energy |
-
2020
- 2020-09-03 CN CN202010914979.9A patent/CN112479549B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW426044U (en) * | 1999-10-15 | 2001-03-11 | Lu Ming Wang | Heating drawn type slurry compressed filtering drier with assembled plate frame |
| TW573692U (en) * | 2003-05-23 | 2004-01-21 | Ming-Wang Lu | Device for heating, evacuating, blowing and drying sludge pressure filtration device |
| TWM466916U (en) * | 2013-08-16 | 2013-12-01 | Ming-Wang Lu | Filter plate structure for sludge filter press |
| TWM466719U (en) * | 2013-08-16 | 2013-12-01 | Ming-Wang Lu | Structural improvement of filtration plate for sludge filter press |
| CN203494238U (en) * | 2013-09-04 | 2014-03-26 | 吕明旺 | Filter plate structure for sludge filter press |
| CN203494240U (en) * | 2013-09-04 | 2014-03-26 | 吕明旺 | Filter plate structure for sludge filter press |
| CN208234736U (en) * | 2018-03-02 | 2018-12-14 | 台湾卜力斯股份有限公司 | The pressure-filteration drying equipment of function is recycled with hot water and steam thermal energy |
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