CN115054970A - Material dehydration system and method - Google Patents
Material dehydration system and method Download PDFInfo
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- CN115054970A CN115054970A CN202210707461.7A CN202210707461A CN115054970A CN 115054970 A CN115054970 A CN 115054970A CN 202210707461 A CN202210707461 A CN 202210707461A CN 115054970 A CN115054970 A CN 115054970A
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- compaction
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- 239000000463 material Substances 0.000 title claims abstract description 74
- 230000018044 dehydration Effects 0.000 title claims abstract description 62
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 165
- 238000005056 compaction Methods 0.000 claims abstract description 104
- 230000005540 biological transmission Effects 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000010802 sludge Substances 0.000 claims description 32
- 230000009471 action Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
- B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
- B01D29/828—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
- B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
-
- 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
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Abstract
The invention discloses a material dehydration system and a material dehydration method. The system comprises a mud pressing dehydration system, a spiral compaction system, a conveying system and a control unit, wherein the mud pressing dehydration system comprises a mud pressing piston, a mud pressing filter cylinder and a mud pressing bottom plate, and the spiral compaction system comprises a spiral body, a spiral transmission shaft, a spiral compaction filter cylinder and a spiral transmission shaft motor. The invention provides two sets of dehydration systems, namely a spiral compaction system and a mud-pressing dehydration system, and creatively provides the dehydration system of the spiral compaction system, so that early preparation is made for the mud-pressing dehydration system to work, and the system has higher dehydration efficiency and lower final water content. The system realizes automatic operation and automatic control of dehydration, and has the advantages of high production efficiency, simple operation and good system stability.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a material dehydration system and a dehydration method related to the system.
Background
The dehydration of materials is a common technical process in industry, such as the dehydration of sludge in the sewage treatment field, the dehydration of gypsum, the dehydration of coal slurry in coal washery, etc., the dehydration efficiency and dehydration rate are important indexes of dehydration effect, and the effect depends on the factors of equipment, method and process, etc.
Sludge dewatering is a sludge treatment method in which fluid primary, concentrated or digested sludge is dewatered and converted into semi-solid or solid sludge blocks. After dewatering, the water content of the sludge can be reduced to fifty-five percent to eighty percent, depending on the properties of the sludge and the sediments and the efficiency of the dewatering equipment. The further dehydration of the sludge is called sludge drying, and the moisture content of the dried sludge is less than ten percent. The dehydration method mainly comprises a natural drying method, a mechanical dehydration method and a granulation method. The natural drying method and the mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulating sedimentation sludge.
The sludge dewatering and volume reduction are not only an important link in the sludge treatment process, but also a link which is difficult to realize. The domestic sewage treatment plant adopts a mechanical dehydration method to reduce the water content of the sludge to about 80 percent, and a large amount of water brings serious difficulties for the subsequent treatment of the sludge. If the water is removed by adopting a heating evaporation method, huge energy consumption is caused, and the sludge treatment cost is high.
The sludge with high water content brings difficulty to the transportation and recycling of the sludge, and how to dehydrate the sludge becomes a problem to be solved urgently. In addition, the existing methods such as gypsum dehydration process, coal slime dehydration of coal washery and the like also have the problem of unsatisfactory dehydration effect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a material dehydration system and a material dehydration method, which have the advantages of good dehydration effect, high automation degree and the like.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a material dewatering system comprises a mud pressing dewatering system, a spiral compaction system, a conveying system and a control unit, wherein:
the mud-pressing dehydration system comprises a mud-pressing piston, a mud-pressing filter cylinder and a mud-pressing bottom plate, wherein the mud-pressing piston is internally provided with a piston bottom plate and a piston filter layer with holes;
the spiral compaction system comprises a spiral body, a spiral transmission shaft, a spiral compaction filter cylinder and a spiral transmission shaft motor, wherein the spiral body is arranged on the spiral transmission shaft and rotates around the spiral transmission shaft under the drive of the spiral transmission shaft motor, and the spiral compaction filter cylinder is positioned outside the spiral body and can move relative to the spiral body;
the conveying system penetrates through the lower parts of the mud pressing dehydration system and the spiral compaction system and is used for conveying the pre-pressed sludge blocks obtained in the spiral compaction system to the lower part of the mud pressing dehydration system.
The spiral compaction system further comprises a spiral moving rack, a spiral fixing rack and a spiral compaction filter cylinder lifting oil cylinder, wherein a spiral transmission shaft is mounted on a bearing of the spiral moving rack, the spiral moving rack can move up and down along a guide pillar of the spiral fixing rack, the fixed end of the spiral compaction filter cylinder lifting oil cylinder is mounted on the spiral fixing rack, the moving end of the spiral compaction filter cylinder lifting oil cylinder is connected with a spiral compaction filter cylinder, and a spiral compaction filter cylinder filtering layer is arranged in the spiral compaction filter cylinder;
the spiral compaction filter cylinder is provided with a spiral rack supporting rod, the top of the spiral rack supporting rod is in contact with the spiral moving rack, when the spiral compaction filter cylinder and the spiral rack supporting rod move upwards, the spiral moving rack moves upwards together with the spiral compaction filter cylinder under the action force of the spiral rack supporting rod, and when the spiral compaction filter cylinder lifting oil cylinder drives the spiral compaction filter cylinder to move downwards, the spiral moving rack also moves downwards due to self gravity.
Furthermore, the spiral compaction system also comprises a spiral upper limit switch and a spiral lower limit switch which are used for limiting the moving range of the spiral moving rack, the spiral upper limit switch and the spiral lower limit switch are arranged on a guide post of the spiral fixing rack, a suspension spring is further installed at the top of the spiral fixing rack, and the other end of the suspension spring is connected with the spiral moving rack.
Furthermore, a filter cylinder middle cylinder is arranged between a filter cylinder outer cylinder and a filter cylinder inner cylinder of the mud pressing dehydration system, through holes are distributed on the filter cylinder middle cylinder, the filter layer of the filter cylinder is arranged in a cavity between the filter cylinder middle cylinder and the filter cylinder inner cylinder, a filter cylinder water cavity is arranged between the filter cylinder middle cylinder and the filter cylinder outer cylinder, and the filter cylinder water cavity is communicated with a filter cylinder drain pipe. The filter drum drain pipe can be externally connected with a vacuum pump to facilitate quick drainage.
Furthermore, the mud-pressing dewatering system further comprises a mud-pressing piston driving device, a filter cylinder lifting device, a mud-pressing fixing frame, a filter cylinder upper travel switch and a filter cylinder lower travel switch, the mud-pressing piston is mounted below a piston pressing block below the mud-pressing piston driving device, the piston pressing block moves up and down along a guide pillar of the mud-pressing fixing frame, the fixed end of the filter cylinder lifting device is mounted on the upper portion of the mud-pressing fixing frame, the moving end of the filter cylinder lifting device is connected with the mud-pressing filter cylinder, and the filter cylinder upper travel switch and the filter cylinder lower travel switch are mounted on the guide pillar of the mud-pressing fixing frame.
Further, conveying system is belt conveyor, and conveying system includes drive wheel, transmission band, the transmission band is the permeable filtration area of ability, transmission band and mud pressing bottom plate upper surface contact.
The mud pressing bottom plate is provided with a bottom plate filter plate with a water passing hole, a bottom plate filter layer is arranged in a cavity formed by the two layers of bottom plate filter plates, a bottom plate water collecting cavity is arranged below the bottom plate filter plate and is connected with a bottom plate water discharging pipe leading to the outside, and the outer end of the bottom plate water discharging pipe can be connected with a vacuum pump to facilitate quick water discharging.
Further, the cartridge filter layer comprises a multi-layer metal screen or cloth.
Furthermore, the system also comprises a control unit which is electrically connected with the spiral upper limit switch, the spiral lower limit switch, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the mud pressing piston driving device, the filter cylinder lifting device, the filter cylinder upper travel switch and the filter cylinder lower travel switch.
A material dehydration method adopting the sludge dehydration system for dehydration comprises the following steps:
ensuring that each device is installed in place, checking the running state of the equipment in a no-load way, and eliminating the abnormality of the equipment;
starting a spiral compaction filter cylinder lifting oil cylinder of the spiral compaction system, and controlling the spiral compaction filter cylinder to descend to a proper position and stop moving; the spiral transmission shaft and the spiral body also move downwards, and the spiral body enters the spinning solid filter cylinder;
the external mud conveying system is started to convey materials into a spiral compaction filter cylinder of the spiral compaction system, a spiral transmission shaft motor drives a spiral transmission shaft and a spiral body to rotate, the materials spirally move downwards along a spiral channel formed by the spiral body and the spiral compaction filter cylinder and are gradually accumulated and compacted below the spiral body, the height of the compacted materials is increased along with the increase of the materials, upward jacking force is generated on the spiral body, the spiral body and the spiral transmission shaft move upwards, when the spiral body and the spiral transmission shaft move upwards to a preset position, the external mud conveying system stops feeding, and the spiral transmission shaft motor, the spiral transmission shaft and the spiral body stop rotating; the spiral compaction filter cylinder is lifted upwards to a non-working position, the spiral moving frame also moves upwards for a certain distance under the action of a support rod of the spiral frame and is separated from the materials, and the compacted and molded materials are completely exposed and placed on the conveying system;
the conveying system moves the materials obtained by the spiral compaction to the lower part of the mud pressing dehydration system, and the conveying system stops working;
the mud-pressing dewatering system starts to work, the mud-pressing filter cylinder moves downwards to be in contact with a conveying belt of the conveying system and then stops, the lower side of the conveying belt is in contact with a mud-pressing bottom plate, and the material obtained by spiral compaction is sleeved by the mud-pressing filter cylinder;
the mud pressing piston driving device drives the mud pressing piston to move downwards into the mud pressing filter cylinder and extrude materials together with the mud pressing filter cylinder, under the action of external force, moisture in the materials is discharged through the mud pressing piston, the mud pressing filter cylinder, the transmission belt, the filter layer and the filter holes of the mud pressing bottom plate, so that extrusion of the materials and separation of water are realized, water is sucked into the collection container by the vacuum water suction pump, when the pressure applied by the mud pressing piston is increased to a set value and is kept for a set time, the mud pressing piston stops pressing, and the mud pressing dehydration process is completed on the materials;
the mud-pressing filter cylinder rises to a non-working position under the driving of power and stops, and materials completely fall off on the conveying belt under the action of gravity and a mud-pressing piston;
the mud pressing piston moves upwards to restore the original position, the conveying system starts to act, and the dehydrated materials are dragged to the material collecting bin, so that the whole working process is completed.
Further, the control unit is electrically connected with an upper spiral limit switch, a lower spiral limit switch, a spiral compaction filter cylinder lifting oil cylinder, a spiral transmission shaft motor, a mud pressing piston driving device, a filter cylinder lifting device, a filter cylinder upper travel switch and a filter cylinder lower travel switch, the control unit controls the operation of the conveying system, the mud conveying system, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the mud pressing piston driving device and the filter cylinder lifting device, the control unit controls the upper and lower traveling of the spiral compaction filter cylinder through the spiral compaction filter cylinder lifting oil cylinder, the control unit controls the positioning of the spiral movable rack, the spiral transmission shaft and the spiral body through the upper spiral limit switch and the lower spiral limit switch, when the spiral transmission shaft and the spiral body rotate, the spiral transmission shaft, the spiral body and the spiral movable rack are lifted up by sludge, and the control unit and the upper spiral limit switch, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the spiral transmission shaft and the spiral body are lifted up and lifted up, The spiral lower limit switch controls the travel and the position of the spiral moving rack, the spiral transmission shaft and the spiral body together. The control unit controls the mud pressing filter cylinder to move up and down and position through the filter cylinder upper travel switch and the filter cylinder lower travel switch.
After the technical scheme is adopted, the two sets of dehydration systems of the spiral compaction system and the mud-pressing dehydration system are provided, and a two-stage dehydration process method of spiral compaction pre-dehydration and mud-pressing dehydration reprocessing is adopted, wherein the dehydration system of the spiral compaction system is creatively provided, so that early preparation is made for the mud-pressing dehydration system to work, and compared with the existing dehydration mechanical system, the mud-pressing dehydration system has a better dehydration rate, so that the system has higher dehydration efficiency and lower final water content. The system realizes automatic operation and automatic control of dehydration through devices such as a control unit, a conveying system, a travel switch and the like, and has the advantages of higher production efficiency, simple and convenient operation and good system stability.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a material dewatering system according to the present invention;
FIG. 2 is a cross-sectional block diagram of one of the material dewatering systems shown in FIG. 1;
FIG. 3 is a schematic diagram of the construction of the mud filter cartridge of FIG. 1;
FIG. 4 is a sectional view of FIG. 3 taken along line B-B;
FIG. 5 is a schematic view of the construction of the mud piston of FIG. 1;
FIG. 6 is a schematic view of the structure at the mud jacking bottom plate of FIG. 1;
FIG. 7 is a schematic view of the piston of FIG. 1 at the press block;
FIG. 8 is a schematic view of the control principle in the present invention;
the reference numbers in the figures are as follows:
1-a control unit; 2-a screw compacting device; 201-spirochete; 202-a spiral compacted filter cartridge; 2021-spiral compaction cartridge filtration layer; 203-spiral fixed frame; 204-a spiral compaction filter cylinder lifting cylinder; 205-a helical drive shaft; 206-spiral upper limit switch; 207-helical mobile gantry; 208-a helical drive shaft motor; 209-suspension spring; 210-a spiral lower limit switch; 211-a water collection tank; 212-a mud pipe; 213-spiral rack support bars; 3-a mud press dewatering system; 31-mud pressing piston driving device; 32-cartridge lifting and lowering means; 33-mud piston pressing; 331-piston filter layer; 332-piston filtering holes; 333-piston water collecting cavity; 334-a piston conduit; 335-piston platen; 336-piston inner parting layer; 34-a mud press filter cartridge; 341-cartridge outer barrel; 342-cartridge in cartridge; 343-inner canister; 344-cartridge drain; 345-cartridge filter layer; 346-cartridge water chamber; 35-pressing a mud bottom plate; 351-bottom plate filter plate; 352-floor filter layer; 353, a bottom plate water collecting cavity; 354-floor drain; 36-mud pressing fixing frame; 37-cartridge up travel switch; 38-cartridge down travel switch; 39-piston briquetting; 391-piston press block lugs; 4-a delivery system; 41-driving wheels; 42-conveying belt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The following description is only for the purpose of explanation and is not intended to limit the invention.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, the material dewatering system of the present invention includes a mud-pressing dewatering system 3, a screw compacting system 2, a conveying system 4, and a control unit 1, wherein:
the mud-pressing dewatering system 3 comprises a mud-pressing piston 33, a mud-pressing filter cylinder 34 and a mud-pressing bottom plate 35, wherein a piston bottom plate 335 with a hole and a piston filter layer 331 are arranged in the mud-pressing piston 33, the mud-pressing filter cylinder 34 comprises a filter cylinder outer cylinder 341, a filter cylinder filter layer 345 and a filter cylinder inner cylinder 343 which are sleeved inside and outside, through holes are distributed on the filter cylinder outer cylinder 341 and the filter cylinder inner cylinder 343, the filter cylinder filter layer 345 is arranged between the filter cylinder outer cylinder 341 and the filter cylinder inner cylinder 343, a filter cylinder drain pipe 344 is arranged on the filter cylinder outer cylinder 341, the mud-pressing piston 33 can extend into the mud-pressing filter cylinder 34 and form a cavity with a closed upper end, and the mud-pressing bottom plate 35 comprises a bottom plate filter layer 352 and a bottom plate drain pipe 354;
the spiral compacting system 2 comprises a spiral body 201, a spiral transmission shaft 205, a spiral compacting filter cylinder 202 and a spiral transmission shaft motor 208, wherein the spiral body 201 is arranged on the spiral transmission shaft 205 and rotates around the spiral transmission shaft 205 under the drive of the spiral transmission shaft motor 208, and the spiral compacting filter cylinder 202 is arranged on the periphery of the spiral body 201 and can move relative to the spiral body 201;
the conveying system 4 passes through the sludge pressing dewatering system and the lower part of the screw compacting system 2 and is used for conveying the pre-pressed sludge block obtained in the screw compacting system 2 to the lower part of the sludge pressing dewatering system.
Further, the helical compaction system 2 further comprises a helical moving frame 207, a helical fixed frame 203 and a helical compaction filter cylinder lifting cylinder 204, the helical transmission shaft 205 is mounted on a bearing of the helical moving frame 207, the helical moving frame 207 can move up and down along a guide post of the helical fixed frame 203, the fixed end of the helical compaction filter cylinder lifting cylinder 204 is mounted on the helical fixed frame 203, the moving end of the helical compaction filter cylinder lifting cylinder 204 is connected with the helical compaction filter cylinder 202, and a helical compaction filter cylinder filtering layer 2021 is arranged in the helical compaction filter cylinder 202;
the spiral compaction filter cylinder 202 can be provided with a spiral frame support rod 213, the top of the spiral frame support rod 213 is in contact with the spiral moving frame 207, when the spiral compaction filter cylinder 202 and the spiral frame support rod 213 move upwards, the spiral moving frame 207 moves upwards together with the spiral compaction filter cylinder 202 under the action of the spiral frame support rod 213, when the spiral compaction filter cylinder lifting cylinder 204 drives the spiral compaction filter cylinder 202 to move downwards, the spiral moving frame 207 also moves downwards due to the self gravity, and the spiral compaction filter cylinder 202 is provided with a spiral compaction filter cylinder filtering layer 2021.
Further, the screw compacting system 2 further includes a screw upper limit switch 206 and a screw lower limit switch 210 for limiting the moving range of the screw moving rack 207, the screw upper limit switch 206 and the screw lower limit switch 210 are both disposed on the guide post of the screw fixing rack 203, a suspension spring 209 is further installed on the top of the screw fixing rack 203, and the other end of the suspension spring 209 is connected with the screw moving rack 207.
Further, a filter cylinder middle cylinder 342 is arranged between the filter cylinder outer cylinder 341 and the filter cylinder inner cylinder 343 of the mud pressing and dewatering system 3, through holes are distributed on the filter cylinder middle cylinder 342, the filter cylinder filter layer 345 is arranged in a cavity between the filter cylinder middle cylinder 342 and the filter cylinder inner cylinder 343, a filter cylinder water cavity 346 is arranged between the filter cylinder middle cylinder 342 and the filter cylinder outer cylinder 341, and the filter cylinder water cavity 346 is communicated with a filter cylinder drain pipe 344. The filter cartridge drain pipe 344 may be externally connected to a vacuum pump for quick draining.
Further, the mud-pressing dewatering system 3 further includes a mud-pressing piston driving device 31, a filter cylinder lifting device 32, a mud-pressing fixing frame 36, a filter cylinder upper travel switch 37, and a filter cylinder lower travel switch 38, the mud-pressing piston 33 is installed below a piston press block 39 below the mud-pressing piston driving device 31, the piston press block 39 moves up and down along a guide post of the mud-pressing fixing frame 36, a fixed end of the filter cylinder lifting device 32 is installed on the upper portion of the mud-pressing fixing frame 36, a moving end of the filter cylinder lifting device 32 is connected with the mud-pressing filter cylinder 34, and the filter cylinder upper travel switch 37 and the filter cylinder lower travel switch 38 are installed on the guide post of the mud-pressing fixing frame 36.
Further, conveying system 4 is a belt conveyor, and conveying system 4 includes drive wheel 41, transmission band 42 is the filter belt that can permeate water, transmission band 42 and mud jacking bottom plate 35 upper surface contact.
As shown in fig. 6, the mud-pressing bottom plate 35 is provided with a bottom plate filter plate 351 with a water through hole, a bottom plate filter layer 352 is arranged in a cavity formed by the two layers of bottom plate filter plates 351, a bottom plate water collecting cavity 353 is arranged below the bottom plate filter plate 351, the bottom plate water collecting cavity 353 is connected with a bottom plate water discharging pipe 354 leading to the outside, and the outer end of the bottom plate water discharging pipe 354 can be connected with a vacuum pump to facilitate quick water discharging.
FIG. 5 is a schematic view of the mud piston 33 of FIG. 1; the mud pressing piston 33 can be in a barrel shape, the bottom of the mud pressing piston 33 is a piston pressing plate 335 with a hole, a piston inner separation layer 336 with a hole is arranged inside the mud pressing piston 33, a piston filter layer 331 is arranged in a cavity formed by the piston pressing plate 335 and the piston inner separation layer 336, a piston water collecting cavity 333 is arranged above the piston inner separation layer 336, the piston water collecting cavity 333 is connected with a piston guide pipe 334, and the other end of the piston guide pipe 334 can be connected with a vacuum pump to facilitate quick water drainage.
Fig. 7 is a schematic structural diagram of the position of the piston pressing block 39, the piston guide pipe 334 and the filter cartridge lifting device 32 (which may adopt a hydraulic cylinder) pass through a through hole on the piston pressing block 39, the top view shape of the piston pressing block 39 may be determined according to actual needs, for example, four corners of the square piston pressing block 39 are provided with piston pressing block lugs 391, and the guide post of the mud pressing fixing frame 36 passes through the through hole of the piston pressing block lugs 391 to provide a guiding function for the up-and-down movement of the piston pressing block 39.
Further, the cartridge filter layer 345 comprises a plurality of layers of metal screens. Or a filter cloth as in the prior art. The spiral-compacted cartridge filter layer 2021 may also comprise multiple layers of metal screens or use a cloth filter material.
Further, the system also comprises a control unit 1, and the control unit 1 is electrically connected with an upper spiral limit switch 206, a lower spiral limit switch 210, a spiral compaction filter cylinder lifting cylinder 204, a spiral transmission shaft motor 208, a mud pressing piston driving device 31, a filter cylinder lifting device 32, a filter cylinder upper travel switch 37 and a filter cylinder lower travel switch 38.
A material dehydration method, which adopts the material dehydration system to perform dehydration, comprises the following steps:
ensuring that each device is installed in place, checking the running state of the equipment in a no-load way, and eliminating the abnormality of the equipment;
starting the spiral compaction filter cylinder lifting oil cylinder 204 of the spiral compaction system 2, and controlling the spiral compaction filter cylinder 202 to descend to be in place and stop moving; the spiral transmission shaft 205 and the spiral body 201 also move downwards, and the spiral body 201 enters the spiral compaction filter cylinder 202;
the external mud conveying system is started to convey materials into the spiral compaction filter cylinder 202 of the spiral compaction system 2, the spiral transmission shaft motor 208 drives the spiral transmission shaft 205 and the spiral body 201 to rotate, the materials spirally move downwards along a spiral channel formed by the spiral body 201 and the spiral compaction filter cylinder 202 and gradually accumulate below the spiral body 201 to be compacted, the height of the compacted materials is increased along with the increase of the materials, upward pushing force is generated on the spiral body 201, the spiral body 201 and the spiral transmission shaft 205 move upwards, when the spiral body 201 and the spiral transmission shaft 205 move upwards to a preset position, the external mud conveying system stops feeding, and the spiral transmission shaft motor 208, the spiral transmission shaft 205 and the spiral body 201 stop rotating; the spiral compaction filter cylinder 202 is lifted upwards to a non-working position, the spiral moving rack 207 also moves upwards for a certain distance under the action of the spiral rack supporting rod 213 and is separated from the material, and the compacted and formed material is completely exposed and is placed on the conveying system 4;
the conveying system 4 moves the materials obtained by the spiral compaction to the lower part of the mud pressing dehydration system 3, and the conveying system 4 stops working;
the mud pressing dewatering system 3 starts to work, the mud pressing filter cylinder 34 moves downwards to be in contact with the transmission belt 42 of the conveying system 4 and then stops, the lower side of the transmission belt 42 is in contact with the mud pressing bottom plate 35, and the materials obtained by spiral compaction are sleeved by the mud pressing filter cylinder 34;
the mud pressing piston driving device 31 drives the mud pressing piston 33 to move downwards into the mud pressing filter cylinder 34 and extrude the materials together with the mud pressing filter cylinder 34, under the action of external pressure, water in the materials is discharged through the mud pressing piston 33, the mud pressing filter cylinder 34, the conveying belt 42 and filter materials and filter holes of the mud pressing bottom plate 35, so that extrusion of the materials and separation of water are realized, water is sucked into a collecting container by a vacuum water suction pump, when the pressure applied by the mud pressing piston 33 is increased to a set value and is kept for a set time, the mud pressing piston 33 stops pressing downwards, and the mud pressing dehydration process of the materials is completed;
the mud pressing filter cylinder 34 is driven by power to ascend to a non-working position and stop, and materials completely fall off on the conveying belt 42 under the action of gravity and the mud pressing piston 33;
the mud pressing piston 33 moves upwards to restore the original position, the conveying system 4 starts to act, and the dehydrated materials are dragged to the material collecting bin, so that the whole working process is completed.
Further, the control unit 1 is electrically connected with an upper spiral limit switch 206, a lower spiral limit switch 210, a spiral compaction filter cylinder lifting cylinder 204, a spiral transmission shaft motor 208, a mud pressing piston driving device 31, a filter cylinder lifting device 32, an upper filter cylinder travel switch 37 and a lower filter cylinder travel switch 38, the spiral transmission shaft 205 is mounted on the spiral moving frame 207, the control unit 1 controls the operation of the conveying system 4, the mud conveying system, the spiral compaction filter cylinder lifting cylinder 204, the spiral transmission shaft motor 208, the mud pressing piston driving device 31 and the filter cylinder lifting device 32, the control unit 1 controls the up-and-down travel of the spiral compaction filter cylinder 202 through the spiral compaction filter cylinder lifting cylinder 204, the control unit 1 controls the positioning of the spiral moving frame 207, the spiral transmission shaft 205 and the spiral body 201 through the upper spiral limit switch 206 and the lower spiral limit switch 210, and when the spiral transmission shaft 205 and the spiral body 201 rotate, the spiral transmission shaft 205, the spiral body 201 and the spiral moving rack 207 are lifted by sludge, and the control unit 1 controls and controls the strokes and the positions of the spiral moving rack 207, the spiral transmission shaft 205 and the spiral body 201 together with the spiral upper limit switch 206 and the spiral lower limit switch 210. Similarly, the control unit 1 controls the up-and-down travel and positioning of the mud jacking filter cylinder 34 through a filter cylinder up travel switch 37 and a filter cylinder down travel switch 38.
The control unit 1 may be constructed in various manners known in the art, such as a PLC module. The control principle of the filter cartridge upper travel switch 37 and the filter cartridge lower travel switch 38 on the mud-pressing filter cartridge 34 belongs to the prior art, and the control unit 1 controls the positioning of the spiral moving frame 207, the spiral transmission shaft 205 and the spiral body 201 through the spiral upper limit switch 206 and the spiral lower limit switch 210, and also belongs to the prior art. The transport of the screw-compacted material on the conveyor system 4 can also be effected by positioning, limiting techniques, for example by means of travel switches or infrared sensors in conjunction with the control unit 1. The stroke control and positioning modes of the related components can adopt related means in the prior art, and are not only selected, but also other means such as infrared sensors, proximity switches, servo motors and the like can realize the determination of the stroke and the position. The control unit 1 can also be connected with a pressure gauge signal of the hydraulic machine connected with the mud-pressing piston driving device 31, and when the pressure value of the hydraulic machine reaches a certain set value, the control unit 1 can stop the hydraulic machine.
An external sludge delivery system delivers material (e.g., sludge to be dewatered) to the screw 201 within the spiral compacted cartridge 202 through the sludge delivery tube 212 of fig. 2 and 3.
The present invention has been described in terms of some embodiments, and is not intended to be limited to the embodiments, but rather, is intended to cover all modifications, improvements, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. A material dewatering system, its characterized in that: including mud pressing dewatering system, spiral compaction system, conveying system, the control unit, wherein:
the mud-pressing dehydration system comprises a mud-pressing piston, a mud-pressing filter cylinder and a mud-pressing bottom plate, wherein the mud-pressing piston is internally provided with a piston bottom plate and a piston filter layer with holes;
the spiral compaction system comprises a spiral body, a spiral transmission shaft, a spiral compaction filter cylinder and a spiral transmission shaft motor, wherein the spiral body is arranged on the spiral transmission shaft and rotates around the spiral transmission shaft under the drive of the spiral transmission shaft motor, and the spiral compaction filter cylinder is positioned outside the spiral body and can move relative to the spiral body;
the conveying system passes through the lower parts of the mud pressing dewatering system and the spiral compacting system and is used for conveying the pre-pressed sludge blocks obtained in the spiral compacting system to the lower part of the mud pressing dewatering system.
2. The material dewatering system of claim 1, wherein: the spiral compaction system also comprises a spiral moving rack, a spiral fixing rack and a spiral compaction filter cylinder lifting oil cylinder, wherein a spiral transmission shaft is arranged on a bearing of the spiral moving rack, the spiral moving rack can move up and down along a guide pillar of the spiral fixing rack, the fixed end of the spiral compaction filter cylinder lifting oil cylinder is arranged on the spiral fixing rack, the moving end of the spiral compaction filter cylinder lifting oil cylinder is connected with a spiral compaction filter cylinder, and a spiral compaction filter cylinder filtering layer is arranged in the spiral compaction filter cylinder;
the spiral compaction filter cylinder is provided with a spiral rack supporting rod, the top of the spiral rack supporting rod is in contact with the spiral moving rack, when the spiral compaction filter cylinder and the spiral rack supporting rod move upwards, the spiral moving rack moves upwards together with the spiral compaction filter cylinder under the action force of the spiral rack supporting rod, and when the spiral compaction filter cylinder lifting oil cylinder drives the spiral compaction filter cylinder to move downwards, the spiral moving rack also moves downwards due to self gravity.
3. The material dewatering system of claim 2, wherein: the spiral compaction system further comprises a spiral upper limit switch and a spiral lower limit switch which are used for limiting the moving range of the spiral moving rack, the spiral upper limit switch and the spiral lower limit switch are arranged on a guide post of the spiral fixing rack, a suspension spring is further mounted at the top of the spiral fixing rack, and the other end of the suspension spring is connected with the spiral moving rack.
4. The material dewatering system of claim 1, wherein: a filter cylinder middle cylinder is arranged between a filter cylinder outer cylinder and a filter cylinder inner cylinder of the mud pressing dehydration system, through holes are distributed in the filter cylinder middle cylinder, a filter layer of the filter cylinder is arranged in a cavity between the filter cylinder middle cylinder and the filter cylinder inner cylinder, a filter cylinder water cavity is arranged between the filter cylinder middle cylinder and the filter cylinder outer cylinder, and the filter cylinder water cavity is communicated with a filter cylinder drain pipe. The drain pipe of the filter cylinder can be externally connected with a vacuum pump so as to facilitate quick drainage.
5. The material dewatering system of claim 1, wherein: the mud-pressing dewatering system further comprises a mud-pressing piston driving device, a filter cylinder lifting device, a mud-pressing fixing frame, a filter cylinder upper travel switch and a filter cylinder lower travel switch, the mud-pressing piston is mounted below a piston pressing block below the mud-pressing piston driving device, the piston pressing block moves up and down along a guide pillar of the mud-pressing fixing frame, the fixed end of the filter cylinder lifting device is mounted on the upper portion of the mud-pressing fixing frame, the moving end of the filter cylinder lifting device is connected with the mud-pressing filter cylinder, and the filter cylinder upper travel switch and the filter cylinder lower travel switch are mounted on the guide pillar of the mud-pressing fixing frame.
6. The material dewatering system of claim 1, wherein: the conveying system is a belt conveyor and comprises a driving wheel and a conveying belt, the conveying belt is a filter belt capable of permeating water, and the conveying belt is in surface contact with the mud pressing bottom plate.
The mud pressing bottom plate is provided with a bottom plate filter plate with a water passing hole, a bottom plate filter layer is arranged in a cavity formed by the two layers of bottom plate filter plates, a bottom plate water collecting cavity is arranged below the bottom plate filter plate and is connected with a bottom plate water discharging pipe leading to the outside, and the outer end of the bottom plate water discharging pipe can be connected with a vacuum pump to facilitate quick water discharging.
7. The material dewatering system of claim 1, wherein: the filter cartridge filter layer comprises a plurality of layers of metal screens or filter cloth.
8. The material dewatering system of claim 1, wherein: the system also comprises a control unit which is electrically connected with the spiral upper limit switch, the spiral lower limit switch, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the mud pressing piston driving device, the filter cylinder lifting device, the filter cylinder upper travel switch and the filter cylinder lower travel switch.
9. A method for dehydrating a material by using the sludge dehydrating system of any one of claims 1 to 8, comprising the steps of:
ensuring that each device is installed in place, checking the running state of the equipment in a no-load way, and eliminating the abnormality of the equipment;
starting a spiral compaction filter cylinder lifting oil cylinder of a spiral compaction system, and controlling the spiral compaction filter cylinder to descend to be in place and stop moving; the spiral transmission shaft and the spiral body also move downwards, and the spiral body enters the spinning solid filter cylinder;
the external mud conveying system is started to convey materials into a spiral compaction filter cylinder of the spiral compaction system, a spiral transmission shaft motor drives a spiral transmission shaft and a spiral body to rotate, the materials spirally move downwards along a spiral channel formed by the spiral body and the spiral compaction filter cylinder and are gradually accumulated and compacted below the spiral body, the height of the compacted materials is increased along with the increase of the materials, upward jacking force is generated on the spiral body, the spiral body and the spiral transmission shaft move upwards, when the spiral body and the spiral transmission shaft move upwards to a preset position, the external mud conveying system stops feeding, and the spiral transmission shaft motor, the spiral transmission shaft and the spiral body stop rotating; the spiral compaction filter cylinder is lifted upwards to a non-working position, the spiral moving frame also moves upwards for a certain distance under the action of a support rod of the spiral frame and is separated from the materials, and the compacted and molded materials are completely exposed and placed on the conveying system;
the conveying system moves the materials obtained by the spiral compaction to the lower part of the mud pressing dehydration system, and the conveying system stops working;
the mud-pressing dewatering system starts to work, the mud-pressing filter cylinder moves downwards to be in contact with a conveying belt of the conveying system and then stops, the lower side of the conveying belt is in contact with a mud-pressing bottom plate, and the material obtained by spiral compaction is sleeved by the mud-pressing filter cylinder;
the mud pressing piston driving device drives the mud pressing piston to move downwards into the mud pressing filter cylinder and extrude materials together with the mud pressing filter cylinder, under the action of external force, moisture in the materials is discharged through the mud pressing piston, the mud pressing filter cylinder, the transmission belt, the filter layer and the filter holes of the mud pressing bottom plate, so that extrusion of the materials and separation of water are realized, water is sucked into the collection container by the vacuum water suction pump, when the pressure applied by the mud pressing piston is increased to a set value and is kept for a set time, the mud pressing piston stops pressing, and the mud pressing dehydration process is completed on the materials;
the mud-pressing filter cylinder rises to a non-working position under the driving of power and stops, and materials completely fall off on the conveying belt under the action of gravity and a mud-pressing piston;
the mud pressing piston moves upwards to restore the original position, the conveying system starts to move, the dehydrated materials are dragged to the material collecting bin, and the whole working process is completed.
10. A method of dewatering material according to claim 9, characterised by: the control unit is electrically connected with the spiral upper limit switch, the spiral lower limit switch, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the mud pressing piston driving device, the filter cylinder lifting device, the filter cylinder upper travel switch and the filter cylinder lower travel switch, the control unit controls the operation of the conveying system, the mud feeding system, the spiral compaction filter cylinder lifting oil cylinder, the spiral transmission shaft motor, the mud pressing piston driving device and the filter cylinder lifting device, the control unit controls the spiral compaction filter cylinder to move up and down through the spiral compaction filter cylinder lifting oil cylinder, the control unit controls the positioning of the spiral movable rack, the spiral transmission shaft and the spiral body through the spiral upper limit switch and the spiral lower limit switch, and when the spiral transmission shaft and the spiral body rotate and are lifted by sludge, the control unit and the spiral upper limit switch, The spiral lower limit switch controls the travel and the position of the spiral moving rack, the spiral transmission shaft and the spiral body together. The control unit controls the mud pressing filter cylinder to move up and down and position through the filter cylinder upper travel switch and the filter cylinder lower travel switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707461.7A CN115054970A (en) | 2022-06-21 | 2022-06-21 | Material dehydration system and method |
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| CN202210707461.7A CN115054970A (en) | 2022-06-21 | 2022-06-21 | Material dehydration system and method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208055177U (en) * | 2018-02-08 | 2018-11-06 | 福建卫道夫环保科技有限公司 | A kind of suction dehydration pressing integrated device handled using inland river sullage |
| CN217472910U (en) * | 2022-06-21 | 2022-09-23 | 山西环能智通科技有限公司 | Material dewatering system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208055177U (en) * | 2018-02-08 | 2018-11-06 | 福建卫道夫环保科技有限公司 | A kind of suction dehydration pressing integrated device handled using inland river sullage |
| CN217472910U (en) * | 2022-06-21 | 2022-09-23 | 山西环能智通科技有限公司 | Material dewatering system |
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