CN108585432B - Integrated screw press sludge dewatering machine - Google Patents
Integrated screw press sludge dewatering machine Download PDFInfo
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- CN108585432B CN108585432B CN201810729449.XA CN201810729449A CN108585432B CN 108585432 B CN108585432 B CN 108585432B CN 201810729449 A CN201810729449 A CN 201810729449A CN 108585432 B CN108585432 B CN 108585432B
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- flocculation
- filter cartridge
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- spiral
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- 239000010802 sludge Substances 0.000 title claims abstract description 42
- 238000005189 flocculation Methods 0.000 claims abstract description 85
- 230000016615 flocculation Effects 0.000 claims abstract description 85
- 230000005484 gravity Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000018044 dehydration Effects 0.000 claims abstract description 13
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 210000005056 cell body Anatomy 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
The utility model provides an integration spiral shell presses sludge dewaterer, belongs to the sludge treatment field, including center main shaft, center main shaft outlying filter cartridge, with a plurality of connecting rods of filter cartridge and center main shaft rigid coupling, the filter cartridge includes the cylinder support, the drum surface of cladding on the cylinder support, the filter cartridge divide into flocculation section, gravity dehydration section and gravity concentration section in proper order, flocculation section, gravity dehydration section are the horizontal segment of filter cartridge, gravity concentration section is the toper section of filter cartridge, the drum surface of flocculation section is sealing panel, the drum surface of gravity concentration section and flocculation section is the mesh panel, and the internal surface of flocculation section is provided with a plurality of flocculation basin, and the flocculation basin forms around the centre of a circle array, and the inlet tube stretches into from the flocculation section, goes out water and filter cartridge tangential setting, and gravity concentration section end rigid coupling has the disc filter cartridge, and the center shaft section that is located the disc filter cartridge is the toper section that the diameter progressively becomes big, and toper section surface is provided with spiral squeezer blade. The floor area is small, and the integration of gravity dewatering, mixed flocculation, spiral conveying and squeezing can be realized.
Description
Technical Field
The invention relates to the field of sludge treatment, in particular to a drum-type sludge dewatering machine.
Background
Chinese patent CN207270843U discloses a belt filter press for sludge dewatering, which belongs to the technical field of sludge treatment, and comprises a main frame and an auxiliary frame, and is characterized in that: the outside of main frame is equipped with first filter belt, the outside of auxiliary frame is equipped with the second filter belt, all be equipped with a plurality of deflector rolls in main frame and the auxiliary frame, be equipped with between first filter belt and the second filter belt and squeeze device and a plurality of high-pressure dewatering roller, squeeze device includes mounting panel, movable compression roller, pressure-bearing cylinder and pneumatic cylinder one, pneumatic cylinder one fixed connection is in the lower part of auxiliary frame, the output and the mounting panel fixed connection of pneumatic cylinder one, the lower part at the mounting panel is installed to movable compression roller, pressure-bearing cylinder installs on the main frame. The invention can fully utilize the occupied space of the equipment, multiply expand the gravity dewatering area, remove more water in the gravity dewatering area, and is beneficial to improving the dewatering effect of the press roller group and the dewatering effect of the sludge.
The technical scheme also discloses that the pressure-bearing roller performs gravity dehydration, but has poor flocculation effect and higher energy consumption, and needs to be improved.
Another example is: chinese patent CN201358206Y discloses a sludge concentrating and dewatering integrated device, which comprises a sludge mixing and feeding device, a rotary pushing gravity dewatering device, a filtering and squeezing device and a sludge cake outlet; the sludge mixing and feeding device comprises a sludge stirring tank and a sludge conveying pipe which are arranged on a frame, wherein a sludge inlet and a medicine inlet are formed in the sludge stirring tank, and stirring blades driven by a motor are arranged in the sludge stirring tank; the sludge conveying pipe is connected with the upper part of the sludge stirring tank; the rotary pushing gravity dewatering device comprises a screen drum, a drainage pipeline and a lower water collecting tank, and the screen drum is connected with a motor; the filtering and squeezing device comprises an upper filter belt, a lower filter belt and a plurality of dewatering rollers, wherein the upper filter belt and the lower filter belt are controlled by a motor, and a wedge-shaped area is formed between the upper filter belt and the lower filter belt; the dewatering rollers are distributed between the upper filter belt and the lower filter belt in an S shape. The invention has the advantages of easy operation, stable performance and high degree of automation, and is ideal equipment for sludge dewatering treatment.
The screen drum only plays a role in gravity dewatering, the flocculation of the screen drum needs to be additionally provided with a sludge stirrer, and the screen drum is driven by a motor, so that the energy consumption is high and still needs to be improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the integrated screw-press sludge dehydrator which has small occupied area and can realize the integration of gravity dehydration, mixed flocculation, screw conveying and pressing.
In order to achieve the purpose of the invention, the following technical scheme is provided: the utility model provides an integrated spiral pressing sludge dewatering machine, includes center main shaft, center main shaft outlying filter cartridge, a plurality of connecting rods with filter cartridge and center main shaft rigid coupling, its characterized in that filter cartridge includes the cylinder support, the drum surface of cladding on the cylinder support, the filter cartridge divide into flocculation section, gravity dehydration section and gravity concentration section in proper order, flocculation section, gravity dehydration section be the horizontal segment of filter cartridge, gravity concentration section be the toper section of filter cartridge, the drum surface of flocculation section is sealing panel, the drum surface of gravity concentration section and flocculation section is the mesh panel, and the internal surface of flocculation section is provided with a plurality of flocculation basin, and the flocculation basin forms around the centre of a circle array, and the inlet tube stretches into from flocculation section, goes out water and filter cartridge tangential setting, and gravity concentration section end rigid coupling has the disk filter cartridge, and the center pin section that is located in the disk filter cartridge is the toper section that the diameter progressively enlarges, and toper section surface is provided with spiral squeezing blade.
Preferably, the surface of the central spindle portion extending out of the disc cartridge is provided with a back pressure plate.
Preferably, the flocculation water tank is a strip-shaped tank body, the section of the tank body is arc-shaped, and one side of the arc-shaped tank body is provided with a water retaining extension edge extending upwards. Through the arrangement, the flocculation mixing time in the water tank can be effectively prolonged.
Preferably, the included angle between the highest point of the water retaining edge and the horizontal plane of the highest point on the other side of the circular arc is 45 degrees.
Preferably, the flocculation water tank is provided with a flocculation spiral blade at the rear side in the flocculation section, and the flocculation spiral blade is fixedly connected with the roller bracket.
When the rotating speed of the roller is high and reaches 5r/min, only 1/4 circle of the roller generates flocculation time which is too short, a plurality of circles of continuous flocculation spiral blades are arranged at the rear stage of the water tank, and flocculation is performed again through the flocculation spiral blades, so that flocculation mixing time is prolonged.
Preferably, the flocculating helical blade is a small helix angle continuous blade of 1.5 turns, pitch p=200. By this arrangement the mixing efficiency is increased.
Preferably, the inner surfaces of the gravity dewatering section and the gravity concentration section are provided with variable-diameter conveying spiral blades, and the spiral blades are fixedly connected with the roller bracket. Conveying and squeezing are carried out through the conveying spiral blade with the variable diameter, so that the gravity dewatering efficiency and the squeezing efficiency are greatly improved.
Preferably, the connecting rod is fixedly connected with the central spindle vertically.
The invention has the beneficial effects that: the invention uses the gravity of the flocculation water tank filled with water as a part of external force for driving the concentration roller, and the part of force is continuous and generates additional torque relative to the roller, so that the roller assists the driving motor to reduce the power. This reduction in power produces a greater torque with a greater diameter of the drum and a greater sump volume, while the central (or peripheral) drive motor may act as auxiliary power. When the torque generated by the hydraulic power is large enough, the driving motor can be omitted, and the drum is rotated only by the hydraulic power. The device can be used as a pre-stage pretreatment for sewage treatment to intercept, retain, dewater and convey slag in sewage.
Drawings
Fig. 1 is a front view of embodiment 1 of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of the central spindle.
Fig. 4 is a schematic view of the cartridge of fig. 1.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a schematic view of the cartridge of fig. 4.
Fig. 7 is a schematic structural view of another filter cartridge of example 2.
Fig. 8 is a left side view of fig. 7.
Fig. 9 is a front view of the sink.
Fig. 10 is a left side view of fig. 9.
Fig. 11 is a partial enlarged view of T in fig. 4.
Detailed Description
Example 1: the utility model provides an integrated spiral pressing sludge dewatering machine, including central main shaft 1, central main shaft 1 outlying filter cartridge 2, with filter cartridge 2 and central main shaft 1 rigid coupling's a plurality of connecting rods 3, connecting rod 3 one end is with central main shaft 1 vertical rigid coupling, the other end is connected with filter cartridge 2's cylinder support 2.1, cylinder support 2.1 surface cladding has drum surface 2.2, filter cartridge 2 divide into flocculation section 2A in proper order, gravity dewatering section 2B and gravity concentration section 2C, flocculation section 2A, gravity dewatering section 2B is the horizontal segment of filter cartridge 2, gravity concentration section 2C is the toper section of filter cartridge 2, flocculation section 2A's drum surface 2.2 is sealed panel 2.2.1, flocculation section 2B and flocculation section 2A's drum surface 2.2 are mesh panel 2.2.2, flocculation section 2A's internal surface is provided with 16 flocculation basin 4, flocculation 4 is formed around the centre of a circle array, flocculation 4 is rectangular groove body cross-section is, convex one side is provided with the manger plate extension 4.1 that upwards extends. The included angle between the highest point of the water retaining extension 4.1 and the horizontal plane of the highest point of the arc-shaped other side 4.2 is 45 degrees. The water retaining extension 4.1 extending upwards is arranged on the outer side and is close to one side of the wall of the filter cylinder 2.
The water inlet pipe 5 extends into the flocculation section 2A, the water outlet and the filter cylinder 2 are tangentially arranged, the disk filter cylinder 14 is fixedly connected with the tail end of the gravity concentration section 2C, the section of the central main shaft 1 positioned in the disk filter cylinder 14 is a conical section 17 with gradually enlarged diameter, and the surface of the conical section 17 is provided with spiral squeezing blades 15. The surface of the portion of the central spindle 1 that protrudes from the disc cartridge 14 is provided with a back pressure plate 16.
The inner surfaces of the gravity dewatering section 2B and the gravity concentration section 2C are provided with variable-diameter conveying spiral blades 7, and the spiral blades 7 are fixedly connected with the roller bracket 2.1.
Example 2: referring to embodiment 1, a flocculation screw blade 8 is further provided in the flocculation section 2A at the rear side of the flocculation water tank 4, and the flocculation screw blade 8 is fixedly connected with the roller bracket 2.1. The flocculation screw blade 8 is a small helix angle continuous blade of 1.5 turns, pitch p=200.
In the above embodiment, two ends of the central spindle 1 are arranged on the bearing seat 9, one end is connected with the driving motor 13, the water inlet valve 10 is arranged on the water inlet pipe 5, the flushing pipeline 11 is arranged above the filter cylinder 2 along the length direction of the cylinder wall, and the slag car 12 can be arranged below the port of the gravity concentration section 2B.
The specific implementation method comprises the following steps:
The first step of sludge flocculation:
1) Setting general parameters.
The drum is set to rotate at a speed of 3r/min, the linear speed pi of the outer cylinder with the diameter phi of 1.2m is calculated to be 0.19m/s, namely the moving speed of the sludge in the filter cylinder.
Setting the effective length L=1000 mm of the flocculation water tank, and the diameter of the flocculation water tank is 150mm, wherein the section of the flocculation water tank is shown in the figure, and the volume V=pi2L/2 of the water to the highest liquid level is calculated to be 0.0081 m/m.
The number of flocculation tanks is set to be 16, the flocculation tanks are uniformly distributed on the inner wall of the cylinder, and the water inflow is calculated to be 3 multiplied by 16 multiplied by 0.0081=0.39 m/min. I.e. the actual throughput of the drum is 23 m/h.
2) Calculation of flocculation time.
Flocculation time of flocculation water tank: an included angle of 5 degrees is set to the flocculation water tank relative to the horizontal central shaft, the flocculation water tank rotates from the position A to the position B, and the flocculation water tank rotates at a speed of 3r/min, namely 20s/r for flocculation mixing time. The rotation time ¼ x 20 = 3.75s from point a to point B, i.e. the effective flocculation time of the sludge is 3.75s. The exit time ¼ x ¼ x 20=1.25 s from point B to point C. The flocculation run time from point a to point C was ¼ x 20 = 5s for the cylinder.
Spiral flocculation time: in the post-treatment of the flocculation tank, a small helical angle continuous blade pitch p=200 of 1.5 circles is set in a closed cylinder, and the purpose is to increase flocculation time. The water discharged from the flocculation water tank directly enters the section to continue the mixed flocculation of the mud and the water. After the parameters have been set: the rotation speed is 3r/min, namely 20s/r, and the spiral number=1.5p. Since 1p=1r=20s, the shortest and longest time for spiral flocculation in drum rotation are 0.5×20=10s and 1.5×20=30s, respectively.
Conclusion: basin flocculation + spiral flocculation, total muddy water flocculation time: between 5+10=15 s and 5+30=35 s. Meets the process requirements. (when the rotating speed of the roller is increased and decreased, the spiral number of turns of the flocculation section can be increased or decreased so as to meet the flocculation time requirement of sludge).
3) And calculating the water inlet moment and the power.
The volume of a single water tank is known to be 0.0081m by a density of water of 1t/m and a gravity of 8.1kgf; at 1 kgf=9.8n, i.e., =79.38n.
According to a moment formula: t=fa. The gravity force f=79.38n, the moment arm a=0.52 m is known.
T=FA=79.38*0.52=41.28N.m；T1=F1A=Fcos22*0.52=38.27N.m；
T2=F2A=Fcos45*0.52=29.17N.m; T3=F3A=Fcos68*0.52=29.76N.m；
Total torque T z =t+t1+t2+t3=124.2 n.m.
Power formula p=t zN/9550,Tz =124.2 n.mn=3r/min. Calculated p=39w.
The original independently-established 0.5-1 cubic meter flocculation cylinder stirring power of 0.75kw can be canceled.
And step two, gravity dehydration:
spiral flocculation liquid in the closed cylinder is pushed to the filter screen cylinder through continuous variable-pitch spiral blades, a filter screen cylinder frame and a central shaft are fixedly connected through steel pipes, the inside of the frame is welded with the spiral blades (left-handed), the number of spirals is 2.5, and the pitch P=300. The blade is externally wrapped with a 20-mesh stainless steel wire net, the periphery of the steel wire net is fixed on the frame through a pressing plate, the diameter phi of the steel wire is 0.4mm, and the mesh diameter reaches 0.87 multiplied by 0.87mm. The flocculated mud and water are obviously separated, the mud water deposited at the bottom of the filter screen cylinder is continuously turned over and pushed to the rear stage at the linear speed of 0.19m/s along with the rotation of the spiral blades, and the water therein is continuously and largely separated out due to gravity, so that the gravity dehydration is completed, and the water content is reduced to about 90%.
And thirdly, gravity concentration:
The sludge is pushed to the conical filter screen cylinder by the continuous spiral blades, and the water content of the sludge is reduced to about 86% by further concentrating and dehydrating due to the lifting effect of the conical filter screen cylinder on the sludge.
And fourthly, squeezing and dehydrating:
The sludge is transferred to the latter stage disc type squeeze dewatering by the helical blades respectively provided on the inner helical blade and the central rotating shaft of the drum. The extrusion dehydration principle is that the gap between the dynamic disc ring and the static disc ring is provided with spiral blades on a horn-shaped mandrel to concentrate and extrude sludge, and a filtering gap arranged between the disc rings is utilized: the sludge is squeezed out continuously with the diameter of 0.2-0.5mm, the sludge is trapped in a cavity formed by the dynamic disc and the static disc and is continuously conveyed to an outlet by a screw shaft, and the back pressing plate at the rear part can further improve the sludge outlet pressure in the filter cylinder cavity, so that the dehydration water content of the sludge is reduced to about 80%.
The upper part of the whole filter cylinder is provided with a flushing pipe for flushing the filter screen surface and the disc ring, so that the dewatering pores are not blocked, and the sludge dewatering can be continuously carried out.
Claims (3)
1. The utility model provides an integrated spiral shell presses sludge dewaterer, including central spindle, central spindle outlying filter cartridge, with filter cartridge and a plurality of connecting rods of central spindle rigid coupling, its characterized in that filter cartridge includes the roller support, cladding is the barrel surface on the roller support, the filter cartridge divide into flocculation section, gravity dehydration section and gravity concentration section in proper order, flocculation section, gravity dehydration section be the horizontal segment of filter cartridge, gravity concentration section is the toper section of filter cartridge, the barrel surface of flocculation section is sealed panel, the barrel surface of gravity concentration section and gravity dehydration section is the mesh panel, the internal surface of flocculation section is provided with a plurality of flocculation basin, and the flocculation basin surrounds the centre of a circle array and forms, and the inlet tube stretches into from the flocculation section, goes out water and filter cartridge tangential setting, utilizes the gravity of flocculation basin dress water as the part external force that drives concentrated cylinder, gravity concentration section end rigid coupling has the video disc, and the center shaft section that is located the video disc is the diameter progressively grow, and is provided with spiral press blade on the surface of toper section, and the surface of center spindle portion that stretches out of filter cartridge is provided with the back pressure plate, and flocculation basin is rectangular groove, and the cell body cross section is circular arc, and is provided with the arc-shaped side slope, and the spiral water retaining ring that extends upwards is located at the spiral pitch height between the spiral roll 1, and the spiral pitch height that is 45, and the spiral pitch is located at the side of the flocculation basin is continuous, and is located at the spiral pitch of the spiral blade that is 45.
2. The integrated screw press sludge dewatering machine according to claim 1, wherein the inner surfaces of the gravity dewatering section and the gravity concentration section are provided with variable-diameter conveying spiral blades, and the spiral blades are fixedly connected with the roller support.
3. The integrated screw sludge dewatering machine of claim 1, wherein the connecting rod is fixedly connected to the central spindle vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729449.XA CN108585432B (en) | 2018-07-05 | 2018-07-05 | Integrated screw press sludge dewatering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729449.XA CN108585432B (en) | 2018-07-05 | 2018-07-05 | Integrated screw press sludge dewatering machine |
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| Publication Number | Publication Date |
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| CN108585432A CN108585432A (en) | 2018-09-28 |
| CN108585432B true CN108585432B (en) | 2024-06-04 |
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| CN109896718B (en) * | 2019-03-12 | 2022-03-01 | 合肥工业大学 | Sludge combined drying device |
| CN110227610B (en) * | 2019-06-13 | 2024-05-07 | 浙江工业大学 | Feed pretreatment device for horizontal decanter centrifuge |
| CN110841358A (en) * | 2019-12-24 | 2020-02-28 | 北京城市排水集团有限责任公司 | Sewage filtering and concentrating device |
| CN111496179A (en) * | 2020-04-14 | 2020-08-07 | 蓝仙松 | Waste molding sand cleaning and concentrating dehydration equipment |
| CN113082826A (en) * | 2021-05-06 | 2021-07-09 | 陈波 | Sludge discharge equipment with sludge compression function for sewage treatment |
| CN116022987B (en) * | 2023-03-29 | 2023-06-13 | 河北环境工程学院 | Full-automatic sludge high-efficiency treatment device |
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| CN108585432A (en) | 2018-09-28 |
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