CN111533421A - Subway sludge separation treatment system and treatment process thereof - Google Patents
Subway sludge separation treatment system and treatment process thereof Download PDFInfo
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- CN111533421A CN111533421A CN202010398508.7A CN202010398508A CN111533421A CN 111533421 A CN111533421 A CN 111533421A CN 202010398508 A CN202010398508 A CN 202010398508A CN 111533421 A CN111533421 A CN 111533421A
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- filter cloth
- roller
- sedimentation tank
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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
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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
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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
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention relates to a subway sludge separation treatment system, which comprises a storage bin, a screening mechanism, a settling mechanism and a filter pressing mechanism, wherein the sand filtering mechanism is arranged above a settling pond, fine sand in the upper layer of the settling pond is filtered and recovered, sludge is conveyed into the storage bin, the sludge is sprayed and diluted, then the sludge is conveyed into a vibrating screen machine through a conveying belt for drying and sorting, large-particle sundries are dried and sorted out and conveyed to a stacking position for stacking, the dried soil is conveyed into the settling pond, the precipitation is accelerated by adding polyacrylamide, the precipitated sludge is conveyed into a settling tank for further precipitation, the sludge is conveyed into a feeding frame, the sludge is conveyed onto first filter cloth and then conveyed onto second filter cloth, and the sludge between the second filter cloth and third filter cloth is extruded under the action of a first press roll and a second press roll, the water in the sludge is squeezed, so that the filter pressing efficiency of the sludge is improved, and the treatment efficiency of the sludge is improved.
Description
Technical Field
The invention relates to a sludge treatment device in subway construction, in particular to a subway sludge separation treatment system and a treatment process thereof.
Background
Silt refers to fine soil that is deposited and contains organic matter in still and slowly flowing water environments.
In the construction process of the subway, the subway is generally built underground, and a large amount of sludge is usually excavated in the construction process; the existing sludge treatment method is characterized in that firstly, the sludge is stacked in a landfill mode, secondly, the sludge is recycled, the sludge often has some silt and construction waste, the existing sludge is diluted and filtered, then the sludge is subjected to filter pressing through a filter press, the filter press is used for filter pressing in the process, the filter press is used for filtering water pressure in the sludge for a period of time, and therefore the sludge treatment efficiency is not high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a subway sludge separation treatment system which has the effects of improving the sludge filter pressing efficiency and improving the sludge treatment efficiency.
The above object of the present invention is achieved by the following technical solutions:
a subway sludge separation treatment system comprises a storage bin for placing sludge, a screening mechanism, a sedimentation mechanism and a filter pressing mechanism,
the upper end of the storage bin is provided with an opening, and a spraying mechanism for spraying and diluting the sludge is arranged between the inner walls of the two sides of the storage bin;
the screening mechanism is a vibrating screen machine with three layers of screen meshes, the vibrating screen machine is arranged below the storage bin, and the vibrating screen machine screens out large-particle sundries in the sludge and conveys the large-particle sundries to a stacking position through a transmission belt for stacking;
the sedimentation mechanism is arranged at a discharge port of the vibrating screen machine, sludge of fine particles screened on the vibrating screen machine and water sprayed in the storage bin enter the sedimentation tank, polyacrylamide is added into the sedimentation tank to accelerate sedimentation of the sludge in the sedimentation tank, slurry precipitated in the sedimentation tank is conveyed to the sedimentation tank through a slurry pump to be precipitated and stored, and a sand filtering mechanism is arranged above the sedimentation tank to filter and recover fine sand in the upper layer of the sedimentation tank;
the filter pressing mechanism comprises a support, wherein a feeding frame is fixedly connected to the upper surface of one end of the support, one side of the feeding frame is communicated with the outside, a blanking plate is fixedly connected to the lower end of one side, communicated with the outside, of the feeding frame, a rotating roller is rotatably connected to the inner walls of two sides of two ends of the support, a first filter cloth is wound between the two groups of rotating rollers, a driving motor for driving the rotating rollers to rotate is arranged on the support, a filter pressing roller is rotatably connected between the inner walls of two sides of the middle position of the support and is positioned below the rotating roller, a first press roller is rotatably connected between the inner walls of two sides of one end, far away from the rotating roller, of the support, a mounting frame is fixedly connected to the upper surface of one end, far away from the rotating roller, of the mounting frame, a plurality of groups of second press rollers are rotatably connected between the inner walls of two sides of, rotate between the one end both sides inner wall that the live-rollers was kept away from to the support and be connected with first guide roll, rotate between the one end both sides inner wall that the mounting bracket is close to the live-rollers and be connected with a plurality of groups second guide roll, rotate between the one end both sides inner wall that the live-rollers was kept away from at the mounting bracket and be connected with a plurality of groups third guide roll the mounting bracket is close to and is connected with the fourth guide roll between the both sides inner wall of one side lower extreme of live-rollers the filter-pressing roll, first compression roller, second compression roller, around rolling up between third guide roll and the first guide roll have the second filter cloth, are equipped with on the support and are used for filter-pressing roll pivoted first driving piece, are equipped with on the mounting bracket and are used for driving second guide roll pivoted second driving piece.
Through adopting above-mentioned technical scheme, through transporting silt to the storage silo, spray the dilution to silt, then shine the selection in carrying to the sieving machine through the conveyer belt, shine the selection and carry to stacking the department with large granule debris, shine the selection in earth is carried to the sedimentation tank, deposit with higher speed through adding polyacrylamide, silt after the sediment is carried and is further precipitated in the gunbarrel, carry to the feeding frame in, silt is carried to the first filter cloth on the back to the second filter cloth, between second filter cloth and third filter cloth, under the effect of first compression roller and second compression roller, extrude the silt between second filter cloth and third filter cloth, moisture in the silt is squeezed, through such setting, moreover, the steam generator is simple in structure, and convenient for operation, the efficiency filter-pressing to silt has been improved, the treatment effeciency to silt has been improved.
The invention is further configured to: the one end terminal surface of first compression roller has been seted up a through-hole, and the through-hole runs through the both ends terminal surface of first compression roller, fixedly connected with rotating tube on through-hole both ends inner wall, and first compression roller passes through the rotating tube and rotates the connection on support both sides inner wall, has seted up a plurality of groups at first compression roller outer wall along first compression roller outer wall circumference and first compression roller length direction interval even and has descended the water hole, the one end and the through-hole intercommunication in water hole down.
Through adopting above-mentioned technical scheme, through set up the through-hole on the one end terminal surface at first compression roller, equal fixedly connected with rotating tube on the both ends terminal surface of first compression roller, first compression roller passes through the rotating tube and rotates the connection on the support, has seted up a plurality of groups and has descended the water hole on first compression roller outer wall, through such setting, moreover, the steam generator is simple in structure, and convenient for operation has made things convenient for second filter cloth and third filter cloth when through first compression roller, the log raft that strains out in second filter cloth and third filter cloth middling pressure to discharge.
The invention is further configured to: the inner wall of one end, close to the through hole, of the lower water hole is fixedly connected with a baffle ring, one end of the baffle ring extends into the through hole, and one end, extending into the through hole, of the baffle ring is arranged in a necking mode.
Through adopting above-mentioned technical scheme, through one fixedly connected with fender ring on the one end inner wall that the hole is close to the through-hole under, keep off the one end that the ring stretches into the through-hole and be the throat setting, through such setting, simple structure, convenient operation has made things convenient for place water and has flowed to the time of launching in the hole from the through-hole.
The invention is further configured to: the second guide rollers are arranged in three groups, the connecting lines of the three groups of second guide rollers are arranged in an obtuse triangle mode, the two groups of second guide rollers which are arranged at the lower side are arranged horizontally, a first spray pipe is arranged between the inner walls of the two sides of the mounting frame, a plurality of groups of first spray heads are fixedly connected to the first spray pipe, the first spray heads are located above the two groups of second guide rollers which are arranged at the lower side, second spray pipes are fixedly connected to the inner walls of the two sides of the support frame, a plurality of groups of second spray heads are fixedly connected to the outer wall of each second spray pipe, and the second spray heads point to the lower surface of the second filter cloth.
Through adopting above-mentioned technical scheme, through the first shower of fixedly connected with on the inner wall of mounting bracket both sides, wash the third filter cloth through first shower head, wash the second filter cloth through the second shower head, through such setting, simple structure, convenient operation has made things convenient for second filter cloth and third filter cloth to wash, has made things convenient for the filter-pressing of the next time of second filter cloth and third filter cloth.
The invention is further configured to: the first water guide plate is fixedly connected between the inner walls of the two sides of the mounting frame and located below the two groups of second guide rollers which are arranged at the lower side, the first water receiving groove is fixedly connected between the inner walls of the two sides of the mounting frame and located below the group of second compression rollers which are close to the lowest side of the rotating rollers, and one end of the first water guide plate is located above the first water receiving groove.
Through adopting above-mentioned technical scheme, through the first water deflector of fixedly connected with between the inner wall of mounting bracket both sides, the first water receiving tank of fixedly connected with between the inner wall of mounting bracket both sides, first water deflector is located by two sets of second guide rolls below down, and the one end of first water deflector is located first water receiving tank top, through such setting, simple structure, convenient operation has reduced during the silt that the washing rivers flow to not have the filter-pressing.
The invention is further configured to: the two sides of the upper surface of the second filter cloth are fixedly connected with air cushions, the air cushions are arranged along the length direction of the second filter cloth, annular grooves are formed in the outer walls of the two ends of the first press roller and the outer walls of the two ends of the second press roller, and the air cushions are abutted to the annular grooves.
Through adopting above-mentioned technical scheme, through the equal fixedly connected with air cushion in the both sides of second filter cloth upper surface, all seted up an annular on first compression roller and second compression roller both ends outer wall, the air cushion butt is in the annular, through such setting, simple structure, convenient operation has made things convenient for and has prevented that the silt between second filter cloth and third filter cloth from second filter cloth both sides when the extrusion drops subaerially.
The invention is further configured to: the support is close to and is equipped with a plurality of groups between the one end both sides inner wall of first filter cloth and scrapes material mechanism, a plurality of groups scrape material mechanism and set up along support length direction, it includes stock, a plurality of groups fixed connection connecting rod, the scraper blade of fixed connection on the stock of fixed connection between the support both sides inner wall on the connecting rod outer wall to scrape material mechanism, the connecting rod sets up along stock length direction, scraper blade fixed connection is on one side that the connecting rod is close to the dwang, the lower surface and the scraper blade lower surface of stock align.
Through adopting above-mentioned technical scheme, through a fixedly connected with stock on support both sides inner wall, fixedly connected with connecting rod on the stock, at connecting rod lower extreme fixedly connected with scraper blade, under the scraper blade effect, made things convenient for the operator to control the thickness of silt on the first filter cloth.
The invention also provides a process for separating and treating the subway sludge, which comprises the following steps:
firstly, conveying sludge dug in construction into a storage bin, spraying the sludge through a spraying mechanism, and scattering the blocky sludge;
step two, the sprayed sludge enters a vibrating screen machine for drying and sorting, the finest sludge is introduced into a sedimentation tank after three-layer screening, and larger particles are conveyed to a stacking position through a transmission belt for stacking and waiting for treatment;
thirdly, adding polyacrylamide serving as a medicament into the sedimentation tank to accelerate sedimentation of sludge in the sedimentation tank, filtering and recovering fine sand contained in the upper layer of the sedimentation tank through a sand filtering mechanism, and conveying the sludge in the lower layer of the sedimentation tank into a sedimentation tank through a sludge pump for further sedimentation;
conveying the sludge at the lower layer in the settling tank to a feeding frame through a sludge pump, moving the sludge to the first filter cloth through a blanking plate, and enabling the sludge to be consistent in height on the first filter cloth under the action of a scraper;
step five, the sludge moves from the first filter cloth to the second filter cloth, the second filter cloth drives the sludge to move, the third filter cloth covers the sludge, the sludge respectively sequentially passes through the first compression roller and the second compression roller, the first ear filter cloth and the third filter cloth are separated at the second guide roller at the top, the sludge after filter pressing drops from the third filter cloth and moves along with the second filter cloth, and then drops to a sludge collection part to be collected: .
In summary, the invention includes at least one of the following beneficial technical effects: the filter pressing efficiency of the sludge is improved, and the treatment efficiency of the sludge is improved; the operator can conveniently control the thickness of the sludge on the first filter cloth; it is convenient to prevent sludge between the second filter cloth and the third filter cloth from falling onto the ground from both sides of the second filter cloth when pressed.
Drawings
FIG. 1 is a schematic overall structure diagram of the first embodiment;
FIG. 2 is a schematic view showing the construction of a filter press mechanism according to the first embodiment;
FIG. 3 is a schematic view showing the overall structure of a first press roller according to the first embodiment;
FIG. 4 is a schematic structural diagram of a sand filtering mechanism according to the first embodiment.
Reference numerals: 1. a storage bin; 2. a screening mechanism; 3. a precipitation mechanism; 4. a filter pressing mechanism; 5. a sedimentation tank; 6. a settling tank; 7. a sand filtering mechanism; 8. a support; 9. a feeding frame; 10. a blanking plate; 11. a rotating roller; 12. a first filter cloth; 13. a drive motor; 14. a filter pressing roller; 15. a first press roll; 16. a mounting frame; 17. a second press roll; 18. a first guide roller; 19. a second guide roller; 20. a third guide roller; 21. a fourth guide roller; 22. a second filter cloth; 23. a third filter cloth; 24. a first driving member; 25. a second driving member; 26. a through hole; 27. rotating the tube; 28. a drain hole; 29. a baffle ring; 30. a first shower pipe; 31. a first shower head; 32. a second shower pipe; 33. a second shower head; 34. a first water guide plate; 35. a first water receiving tank; 36. an air cushion; 37. a ring groove; 38. a scraping mechanism; 39. a long rod; 40. a connecting rod; 41. a squeegee; 42. mounting lugs; 43. a strut; 44. a rotating wheel; 45. filtering with a screen; 46. feeding plates; 47. a servo motor; 48. provided is a screening machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
First embodiment, as shown in fig. 1, a subway sludge separation treatment system disclosed by the invention comprises a storage bin 1 for placing sludge, a screening mechanism 2, a settling mechanism 3 and a filter pressing mechanism 4.
As shown in fig. 1 and 2, the storage bin 1 is provided with an opening at the upper end, a spraying mechanism for spraying and diluting the sludge is arranged between the inner walls of two sides of the storage bin 1, the spraying mechanism is arranged as a flushing pipe, a plurality of groups of punches are fixedly connected to the flushing pipe, and the punches point to the sludge.
As shown in fig. 1 and 2, the vibrating and sieving mechanism is a vibrating and sieving machine with three layers of screens, the vibrating and sieving machine is located below the discharge port of the storage bin 1, sludge moves into the vibrating and sieving machine from the storage bin 1, and after passing through the vibrating and sieving machine, impurities with larger particles are conveyed to a stacking position through a conveying belt to be stacked.
As shown in fig. 1 and 2, the sedimentation mechanism 3 comprises a sedimentation tank 5 and a sedimentation tank 6, the sedimentation tank 5 is arranged below a discharge port of the vibrating screen machine, fine-particle sludge moves from the vibrating screen machine to the sedimentation tank 5 for sedimentation, polyacrylamide is added into the sedimentation tank 5 to accelerate sedimentation of the sludge in the sedimentation tank 5, the sludge settled in the sedimentation tank 5 is conveyed to the sedimentation tank 6 by a slurry pump for sedimentation again, a sand filtering mechanism 7 is arranged above the sedimentation tank 5, and the sand filtering mechanism 7 is used for filtering out fine sand in an upper layer of the sedimentation tank 5 for recycling.
As shown in fig. 4, the sand filtering mechanism 7 includes mounting lugs 42 fixedly connected to the upper surfaces of both sides of the sedimentation tank 5, support rods 43 rotatably connected to the two sets of mounting lugs 42, two sets of rotating wheels 44 fixedly connected to the outer walls of the support rods 43, a filter screen 45 fixedly connected between the inner walls of the two sets of rotating wheels 44, a feeding plate 46 fixedly connected between the two sets of rotating wheels 44, a servo motor 47 fixedly connected to the outer walls of the sedimentation tank 5 for driving the support rods 43 to rotate, and a screening machine 48 arranged on the side wall of one end of the sedimentation tank 5 for screening sand, wherein the rotating wheels 44 are arranged in a hollow manner, the feeding plate 46 is arranged in an inclined manner, and one end of the feeding plate 46 is flush with the outer.
As shown in fig. 1 and 2, the filter pressing mechanism 4 comprises a support 8, a feeding frame 9 is fixedly connected to the upper surface of one end of the support 8, the feeding frame 9 is provided with an opening at the upper end, one side of the feeding frame 9 is communicated with the outside, the bottom surface of the inner wall of the feeding frame 9 is obliquely arranged, a blanking plate 10 is fixedly connected to the lower surface of the side, communicated with the outside, of the feeding frame 9, two groups of rotating rollers 11 are rotatably connected between the inner walls of two sides of one end, close to the feeding frame 9, of the support 8, a first filter cloth 12 is wound between the two groups of rotating rollers 11, and a driving motor 13 for driving the rotating rollers 11 to rotate is fixedly connected to the support 8;
a filter press roller 14 is rotatably connected between the two side inner walls of the middle position of the bracket 8, the filter press roller 14 is positioned below the rotating roller 11, a first press roller 15 is rotatably connected between the two side inner walls of one end of the bracket 8 far away from the rotating roller 11, an installation frame 16 is fixedly connected on the upper surface of one end of the bracket 8 far away from the rotating roller 11, a plurality of groups of second press rollers 17 are rotatably connected between the two side inner walls of the installation frame 16, the plurality of groups of second press rollers 17 are arranged along the height direction of the installation frame 16 and are arranged in a serpentine shape, a first guide roller 18 is rotatably connected between the two side inner walls of one end of the bracket 8 far away from the feeding frame 9, a plurality of groups of second guide rollers 19 are rotatably connected between the two side inner walls of one side of the installation frame 16 close to the rotating roller 11, three groups of second guide rollers 19 are arranged, the two groups of second guide rollers 19 which are arranged next to each, a plurality of groups of third guide rollers 20 are rotatably connected between two inner walls on one side of the mounting frame 16 far away from the rotating roller 11, a fourth guide roller 21 is rotatably connected between two inner walls on the lower end of one side of the mounting frame 16 near the feeding frame 9, a second filter cloth 22 is wound between the filter pressing roller 14, the first press roller 15, the second press roller 17 and the third guide roller 20 and the first guide roller 18, a third filter cloth 23 is wound between the fourth guide roller 21, the first press roller 15, the second press roller 17 and the second guide roller 19, the third filter cloth 23 is abutted against the second filter cloth 22 after passing through the fourth guide roller 21, a first driving part 24 for driving the filter pressing roller 14 to rotate is arranged on the support 8, the first driving part 24 is arranged as a first motor, the first motor is fixedly connected on the support 8, a second driving part 25 for driving the second guide roller 19 to rotate is arranged on the mounting frame 16, and the second driving part 25 is arranged as a second motor, the second motor is fixedly connected to the mounting frame 16.
As shown in fig. 2 and 3, in order to facilitate the discharge of moisture in sludge, a through hole 26 is formed in an end face of one end of the first pressing roller 15, the through hole 26 penetrates through end faces of both ends of the first pressing roller 15, a rotating pipe 27 is fixedly connected to both end faces of the first pressing roller 15, the rotating roller 11 and the through hole 26 are concentrically arranged, the first pressing roller 15 is rotatably connected to the bracket 8 through the rotating pipe 27, a plurality of groups of water drainage holes 28 are uniformly formed in the outer wall of the first pressing roller 15 along the circumferential direction of the outer wall of the first pressing roller 15 and along the length direction of the first pressing roller 15 at intervals, and the water drainage holes 28 are communicated with the through hole 26; a baffle ring 29 is fixedly connected to the inner wall of the lower water hole 28 at the end close to the through hole 26, and the end of the baffle ring 29 extending into the through hole 26 is in a necking shape.
As shown in fig. 1, in order to clean the second filter cloth 22 and the third filter cloth 23 conveniently, the second guide rollers 19 are arranged in three groups, the three groups of second guide rollers 19 are arranged in an obtuse triangle, wherein the two groups of second guide rollers 19 which are arranged at the lower part are arranged horizontally, the mounting frame 16 is fixedly connected with a first spray pipe 30, the first spray pipe 30 is fixedly connected with a plurality of groups of first spray heads 31, the first spray heads 31 are positioned above the two groups of second guide rollers 19 which are arranged at the lower part, the inner walls at the two sides of the support 8 are fixedly connected with a second spray pipe 32, the outer wall of the second spray pipe 32 is fixedly connected with a plurality of groups of second spray heads 33, and the second spray heads 33 point to the lower surface of the second filter cloth 22.
As shown in fig. 1, in order to prevent the washing water from falling into the sludge without filter pressing, a first water guide plate 34 is fixedly connected between the inner walls of the two sides of the mounting frame 16, the first water guide plate 34 is located below the two lower sets of second guide rollers 19, a first water receiving tank 35 is fixedly connected between the inner walls of the two sides of the mounting frame 16, and one end of the first water guide plate 34 is located above the first water receiving tank 35.
As shown in fig. 2 and 3, in order to prevent the sludge from falling onto the ground from both sides of the second filter cloth 22, air cushions 36 are fixedly connected to both sides of the upper surface of the second filter cloth 22, the air cushions 36 are arranged along the length direction of the second filter cloth 22, annular grooves 37 are formed on both outer walls of the first press roller 15 and both outer walls of the second press roller 17, and the air cushions 36 are abutted against the annular grooves 37.
As shown in fig. 2, in order to conveniently ensure the thickness of the sludge on the first filter cloth 12, a plurality of groups of scraping mechanisms 38 are arranged between the inner walls of two sides of one end of the support 8 close to the first filter cloth 12, the groups of scraping mechanisms 38 are arranged along the length direction of the support 8, each scraping mechanism 38 comprises a long rod 39, a connecting rod 40 and a scraper 41, two ends of each long rod 39 are respectively and fixedly connected to the inner walls of two sides of the support 8, one end of each connecting rod 40 is fixedly connected to the corresponding long rod 39, a plurality of groups of connecting rods 40 are fixedly connected to the corresponding long rod 39 along the length direction of the corresponding long rod 39, the scraper 41 is fixedly connected to one end of the connecting rod 40 far away.
The implementation principle of the embodiment is as follows: the sludge is conveyed to the storage bin 1, the sludge is sprayed and diluted through a spraying mechanism, then the sludge is screened through a vibrating screen machine, the soil is conveyed to the sedimentation tank 5, the servo motor 47 drives the supporting rod 43 to rotate, the supporting rod 43 drives the rotating wheel 44 to rotate, the rotating wheel 44 drives the filter screen 45 to filter out fine sand in the upper layer of the sedimentation tank 5 and then discharge the fine sand to the screening machine 48 for screening, the precipitated sludge is conveyed to the sedimentation tank 6 for further sedimentation, the precipitated sludge is conveyed to the first filter cloth 12, the sludge moves to the second filter cloth 22 under the action of the first filter cloth 12, the second filter cloth 22 and the third filter cloth 23 wrap the sludge, after passing through the first compression roller 15 and the second compression roller 17, water in the sludge is subjected to pressure filtration, the first spraying pipe 30 cleans the third filter cloth 23, and the second spraying pipe 32 cleans the second filter cloth 22.
Second embodiment, as shown in fig. 2, a process for treating and separating subway sludge comprises the following steps,
firstly, conveying sludge dug in construction to a storage bin 1, spraying the sludge through a spraying mechanism, and scattering the blocky sludge;
step two, the sprayed sludge enters a vibrating screen machine for drying and sorting, the finest sludge is introduced into a sedimentation tank 5 after three-layer screening, and larger particles are conveyed to a stacking position through a transmission belt for stacking and waiting for treatment;
thirdly, adding polyacrylamide serving as a medicament into the sedimentation tank 5 to accelerate sedimentation of sludge in the sedimentation tank 5, filtering and recovering fine sand contained in the upper layer of the sedimentation tank 5 through a sand filtering mechanism 7, and conveying the sludge in the lower layer of the sedimentation tank 5 into a sedimentation tank 6 through a mud pump for further sedimentation;
fourthly, conveying the sludge on the lower layer in the settling tank 6 into a feeding frame 9 through a sludge pump, moving the sludge onto the first filter cloth 12 through a blanking plate 10, and enabling the sludge to be consistent in height on the first filter cloth 12 under the action of a scraper 41;
and step five, sludge moves from the first filter cloth 12 to the second filter cloth 22, the second filter cloth 22 drives the sludge to move, the third filter cloth 23 covers the sludge, the sludge respectively passes through the first press roller 15 and the second press roller 17 in sequence, the first ear filter cloth and the third filter cloth 23 are separated at the uppermost second guide roller 19, and the sludge after filter pressing falls from the third filter cloth 23 and moves along with the second filter cloth 22, and then falls to a sludge collection position to be collected.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A subway sludge separation treatment system is characterized in that: comprises a storage bin (1) for placing sludge, a screening mechanism (2), a sedimentation mechanism (3) and a filter pressing mechanism (4),
the sludge storage device comprises a storage bin (1), wherein the upper end of the storage bin (1) is provided with an opening, and a spraying mechanism for spraying and diluting sludge is arranged between the inner walls of two sides of the storage bin (1);
the screening mechanism (2) is a vibrating screen machine with three layers of screen meshes, the vibrating screen machine is arranged below the storage bin (1), and the vibrating screen machine screens out large-particle sundries in the sludge and conveys the large-particle sundries to a stacking position through a transmission belt for stacking;
the sedimentation mechanism (3) is arranged into a sedimentation tank (5) and a sedimentation tank (6), the sedimentation tank (5) is arranged at the discharge port of the vibrating screen machine, sludge of fine particles screened on the vibrating screen machine and water sprayed in the storage bin (1) enter the sedimentation tank (5), polyacrylamide is added into the sedimentation tank (5) to accelerate sedimentation of the sludge in the sedimentation tank (5), slurry precipitated in the sedimentation tank (5) is conveyed into the sedimentation tank (6) through a slurry pump to be precipitated and stored, a sand filtering mechanism (7) is arranged above the sedimentation tank (5), and fine sand in the upper layer of the sedimentation tank (5) is filtered and recovered;
the filter pressing mechanism (4) comprises a support (8), a feeding frame (9) is fixedly connected to the upper surface of one end of the support (8), one side of the feeding frame (9) is communicated with the outside, a blanking plate (10) is fixedly connected to the lower end of one side, communicated with the outside, of the feeding frame (9), a rotating roller (11) is rotatably connected to the inner walls of the two sides of the two ends of the support (8), a first filter cloth (12) is wound between the two groups of rotating rollers (11), a driving motor (13) for driving the rotating roller (11) to rotate is arranged on the support (8), a filter pressing roller (14) is rotatably connected between the inner walls of the two sides of the middle position of the support (8), the filter pressing roller (14) is positioned below the rotating rollers (11), a first pressing roller (15) is rotatably connected between the inner walls of the two sides of one end, far away from the rotating roller (11), of the support (8), a mounting frame (16) is fixedly connected to the upper surface of one end, far, a plurality of groups of second press rollers (17) are rotatably connected between the inner walls of the two sides of the mounting rack (16) along the height direction of the mounting rack (16), the second press rollers (17) are distributed in a snake shape, a first guide roller (18) is rotatably connected between the inner walls of the two sides of one end, far away from the rotating roller (11), of the support (8), a plurality of groups of second guide rollers (19) are rotatably connected between the inner walls of the two sides of one end, near to the rotating roller (11), of the mounting rack (16), a plurality of groups of third guide rollers (20) are rotatably connected between the inner walls of the two sides of one end, far away from the rotating roller (11), of the mounting rack (16), a fourth guide roller (21) is rotatably connected between the inner walls of the two sides of the lower end, near to the rotating roller (11), and second filter cloth (22) is wound between the filter press roller (14), the first press roller (15), the second press roller (17), the third guide rollers (, third filter cloth (23) is wound among the fourth guide roller (21), the first press roller (15), the second press roller (17) and the second guide roller (19), a first driving piece (24) used for rotating the filter pressing roller (14) is arranged on the support (8), and a second driving piece (25) used for driving the second guide roller (19) to rotate is arranged on the mounting rack (16).
2. The subway sludge separation treatment system as claimed in claim 1, wherein: seted up a through-hole (26) on the one end terminal surface of first compression roller (15), through-hole (26) run through the both ends terminal surface of first compression roller (15), fixedly connected with rotating tube (27) on through-hole (26) both ends inner wall, first compression roller (15) rotate through rotating tube (27) and connect on support (8) both sides inner wall, at first compression roller (15) outer wall along first compression roller (15) outer wall circumference and first compression roller (15) length direction interval even offer a plurality of groups down water hole (28), the one end and the through-hole (26) intercommunication of lower water hole (28).
3. The subway sludge separation treatment system as claimed in claim 2, wherein: one end inner wall of the lower water hole (28) close to the through hole (26) is fixedly connected with a baffle ring (29), one end of the baffle ring (29) extends into the through hole (26), and one end of the baffle ring (29) extending into the through hole (26) is arranged in a necking mode.
4. The subway sludge separation treatment system as claimed in claim 3, wherein: second guide roll (19) set up three groups, three groups of second guide roll (19) lines are the obtuse triangle setting, wherein two sets of second guide roll (19) that lean on are the level setting, be equipped with first shower (30) between mounting bracket (16) both sides inner wall, first shower (31) of a plurality of groups of fixedly connected with on first shower (30), first shower (31) are located two sets of second guide roll (19) top that lean on down, fixedly connected with second shower (32) on support (8) both sides inner wall, a plurality of groups of second shower (33) of fixedly connected with on second shower (32) outer wall, directional second filter cloth (22) lower surface of second shower (33).
5. The subway sludge separation treatment system as claimed in claim 4, wherein: fixedly connected with first water deflector (34) between mounting bracket (16) both sides inner wall, first water deflector (34) are located two sets of second guide roll (19) below that lean on, and first water receiving tank (35) of fixedly connected with between mounting bracket (16) both sides inner wall, first water receiving tank (35) are located a set of second compression roller (17) below near the bottommost of live-rollers (11), and the one end of first water deflector (34) is located first water receiving tank (35) top.
6. The subway sludge separation treatment system as claimed in claim 5, wherein: equal fixedly connected with air cushion (36) in both sides of second filter cloth (22) upper surface, annular (37) have all been seted up along second filter cloth (22) length direction setting in air cushion (36) on the both ends outer wall of first compression roller (15) and the both ends outer wall of second compression roller (17), air cushion (36) butt is in annular (37).
7. A subway sludge separation treatment system as claimed in claim 6, wherein: support (8) are close to between the one end both sides inner wall of first filter cloth (12) and are equipped with a plurality of groups and scrape material mechanism (38), a plurality of groups scrape material mechanism (38) and set up along support (8) length direction, scrape material mechanism (38) including long pole (39), connecting rod (40), the scraper blade (41) of fixed connection on long pole (39) of fixed connection between support (8) both sides inner wall, a plurality of groups fixed connection on long pole (39), fixed connection on connecting rod (40) outer wall, connecting rod (40) set up along long pole (39) length direction, scraper blade (41) fixed connection is on one side that connecting rod (40) are close to the dwang, the lower surface and scraper blade (41) lower surface of long pole (39) align.
8. A subway sludge separation treatment process using the subway sludge separation treatment system as claimed in claim 7, characterized in that: comprises the following steps of (a) carrying out,
firstly, conveying sludge dug in construction into a storage bin (1), spraying the sludge through a spraying mechanism, and scattering the blocky sludge;
step two, the sprayed sludge enters a vibrating screen machine for drying and sorting, the finest sludge is introduced into a sedimentation tank (5) after three-layer screening, and the larger particles are transmitted to a stacking position through a transmission belt for stacking and waiting for treatment;
thirdly, adding polyacrylamide serving as a medicament into the sedimentation tank (5) to accelerate sedimentation of sludge in the sedimentation tank (5), filtering and recovering fine sand contained in the upper layer of the sedimentation tank (5) through a sand filtering mechanism (7), and conveying the sludge in the lower layer of the sedimentation tank (5) to a sedimentation tank (6) through a mud pump for further sedimentation;
fourthly, sludge on the lower layer in the settling tank (6) is conveyed into a feeding frame (9) through a slurry pump, the sludge moves onto first filter cloth (12) through a blanking plate (10), and the height of the sludge on the first filter cloth (12) is consistent under the action of a scraper (41);
fifthly, the sludge moves from the first filter cloth (12) to the second filter cloth (22), the second filter cloth (22) drives the sludge to move, the third filter cloth (23) covers the sludge, the sludge respectively passes through the first pressing roller (15) and the second pressing roller (17) in sequence, the first ear filter cloth and the third filter cloth (23) are separated at the second guide roller (19) at the top, and the sludge after filter pressing falls from the third filter cloth (23) and moves along with the second filter cloth (22) and then falls to a sludge collection position to be collected.
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| CN202010398508.7A CN111533421A (en) | 2020-05-12 | 2020-05-12 | Subway sludge separation treatment system and treatment process thereof |
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| CN202010398508.7A CN111533421A (en) | 2020-05-12 | 2020-05-12 | Subway sludge separation treatment system and treatment process thereof |
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