CN117263485A - Automatic sludge dewatering treatment system and method - Google Patents
Automatic sludge dewatering treatment system and method Download PDFInfo
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- CN117263485A CN117263485A CN202311342379.XA CN202311342379A CN117263485A CN 117263485 A CN117263485 A CN 117263485A CN 202311342379 A CN202311342379 A CN 202311342379A CN 117263485 A CN117263485 A CN 117263485A
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- 239000010802 sludge Substances 0.000 title claims abstract description 235
- 238000000034 method Methods 0.000 title claims description 32
- 239000004744 fabric Substances 0.000 claims abstract description 207
- 238000003825 pressing Methods 0.000 claims abstract description 92
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 36
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 12
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 238000001035 drying Methods 0.000 description 23
- 238000007599 discharging Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000008569 process Effects 0.000 description 16
- 208000005156 Dehydration Diseases 0.000 description 9
- 238000012545 processing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005496 tempering Methods 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The system comprises a frame, a filter cloth sludge entrainment system and a filter pressing module are arranged on the frame, the filter cloth sludge entrainment system comprises a pumping module, an upper module, a chain plate module, a lower module, a cloth swing module and a charging basket module, the upper module and the lower module are respectively positioned on the upper side and the lower side of the chain plate module, the lower module is used for providing or recovering lower filter cloth, and the upper module is used for providing or recovering upper filter cloth; the pumping module is used for conveying sludge and flowing the sludge onto the lower-layer filter cloth through the sludge outlet, and the upper-layer filter cloth and the lower-layer filter cloth form a filter cloth sludge layer which moves along with the chain plate module after the sludge is entrained with the sludge; the cloth swinging module reciprocates to sequentially laminate the filter cloth sludge layers in the charging basket of the charging basket module; the filter pressing module is used for squeezing and dehydrating the filter cloth sludge layers stacked in the charging basket. According to the invention, through linkage among modules, the cost and the energy consumption are reduced; the automatic and double-station operation is realized, and the use efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of sludge dewatering treatment, relates to structural and performance improvement of sludge dewatering equipment, and particularly relates to an automatic sludge dewatering treatment system and method.
Background
The sludge drying equipment can effectively reduce the weight and volume of materials, realize recycling of the materials and protect the environment, and is widely used in municipal administration, cultivation and sewage treatment of enterprises at present. Common sludge drying treatment processes comprise belt type low-temperature drying, blade drying, belt type extrusion drying, plate and frame filter pressing sludge drying, vertical filter pressing and the like.
The belt type low-temperature drying and blade drying modes are mainly used for dehydration treatment of sludge which is subjected to combustion processing after discharging, and the energy consumption of equipment in the two modes is too high although the water content of the discharging is low. The belt type extrusion drying and plate frame press filtration are required to be added with materials such as lime and the like to assist in dehumidification and water absorption, so that the operation investment and cost are greatly increased. Therefore, compared with vertical filter pressing, the first four modes have the problems of high operation energy consumption and high cost.
The equipment matched with different treatment processes in the vertical filter pressing mode is also different. However, most of the existing vertical sludge dewatering equipment for filter pressing still runs semi-automatically, and needs to manually transport the filter cloth and sludge materials, so that the efficiency is low; the treatment process and the equipment have complex structures and high cost; the running cost and the energy consumption of the equipment are increased.
For example, china patent (issued publication No. CN 111943476B) discloses a filter-pressing type sludge dewatering rapid drying system and a treatment method thereof. The system comprises a control management terminal, a centralized control system, a sludge treatment unit, a dehydration treatment unit, a quick drying unit, a material storage unit and a sewage treatment unit, and relates to the technical field of sludge treatment. According to the filter-pressing type sludge dewatering rapid drying system and the treatment method thereof, pretreatment is carried out before sludge dewatering, tempering is carried out on sludge, the water content of the sludge is reduced, rapid dewatering and drying treatment of the sludge is achieved, then the sludge is subjected to filter pressing treatment through a sludge filter pressing mechanism, rapid drying treatment is carried out on the sludge subjected to filter pressing through an aeration stirring mechanism in a rapid drying unit, the whole system has high dewatering and drying efficiency on the sludge, and intelligent control is carried out through a centralized control system when the whole sludge dewatering rapid drying system works, so that the management efficiency of staff is greatly improved.
Especially for the aquaculture, most of civil enterprises are very concerned about cost and energy consumption investment while meeting the requirements of sludge dewatering and drying effects, environmental protection and quality.
Disclosure of Invention
The invention aims to provide an automatic sludge dewatering treatment system and method, which are used for solving the defects of low efficiency, higher cost and the like of the existing sludge drying vertical filter pressing mode.
In order to achieve the purpose of the invention, the following technical scheme is adopted:
the automatic sludge dewatering treatment system comprises a frame, wherein a filter cloth sludge entrainment system and a filter pressing module are arranged on the frame, the filter cloth sludge entrainment system comprises a pumping module, an upper layer module, a chain plate module, a lower layer module, a cloth arranging module and a charging basket module, the upper layer module and the lower layer module are respectively positioned on the upper side and the lower side of the chain plate module, the lower layer module is used for providing or recovering lower layer filter cloth, the upper layer module is used for providing or recovering upper layer filter cloth, and the lower layer filter cloth and the upper layer filter cloth move along with the chain plate of the chain plate module; the pumping module is used for conveying sludge and flowing onto the lower-layer filter cloth through the sludge outlet, and the upper-layer filter cloth and the lower-layer filter cloth form a filter cloth sludge layer which moves along with the chain plate module after the sludge is entrained with the sludge; the cloth swinging module reciprocates to sequentially laminate the filter cloth sludge layers in the charging basket of the charging basket module; the filter pressing module is used for squeezing and dehydrating the filter cloth sludge layers stacked in the charging basket; after dehydration, the upper layer module and the lower layer module are reversed to drive the filter cloth and sludge layer to separate, and the upper layer filter cloth and the lower layer filter cloth are respectively retracted by the upper layer module and the lower layer module.
In order to further achieve the purpose of the present invention, the following technical solutions may also be adopted:
the automatic sludge dewatering treatment system comprises the feed bin, the material pump, the pipeline, the sludge outlet barrel, the barrel support and the two sets of sludge outlet baffle assemblies, wherein the feed bin is arranged above the material pump, the outlet of the bottom of the feed bin is communicated with the inlet of the material pump, the sludge outlet barrel is fixed with the frame through the barrel support at two longitudinal ends, one side of the sludge outlet barrel is communicated with the material pump through the pipeline, the other side of the sludge outlet barrel is provided with a sludge outlet, and the sludge outlet is positioned above the chain plate module; two sets of mud baffle assemblies are respectively installed at two ends of a mud outlet cylinder, each mud baffle assembly comprises an electric cylinder, a middle connecting rod, an upper baffle and a lower baffle, one ends of the upper baffle and the lower baffle are hinged to a cylinder support, the other ends of the upper baffle and the lower baffle extend out towards the mud outlet side of the mud outlet cylinder, the electric cylinders are installed at the end parts of the mud outlet cylinder, the free ends of piston rods of the electric cylinders are hinged to the middle connecting rod, and the middle connecting rod is installed between the upper baffle and the lower baffle.
The automatic sludge dewatering treatment system comprises an upper layer module and a lower layer module, wherein the upper layer module and the lower layer module respectively comprise a first driving motor, a clutch, and a driving roller, an upper deviation rectifying roller and a lower deviation rectifying roller which are longitudinally and parallelly arranged, the first driving motor is fixed with a rack, a rotating shaft of the first driving motor drives the driving roller through the clutch, the driving roller is used for providing or recovering lower layer filter cloth and lower layer filter cloth, two ends of the upper deviation rectifying roller and two ends of the lower deviation rectifying roller are connected with the rack through mounting seats, and the upper deviation rectifying roller and the lower deviation rectifying roller are respectively arranged on the upper side and the lower side of the driving roller; the upper layer module is provided with parallel press rolls at the rear side of the lower deviation correcting roll, the press rolls are hinged with the frame through press roll supports, and the press rolls are used for spreading, pressing and leveling filter cloth sludge layers moving along with the chain plate modules.
The automatic sludge dewatering treatment system comprises the chain plate module, the chain plate and the chain plate frame, wherein the chain plate frame is fixed on the frame, chains are arranged at two ends of the chain plate, the chains are sleeved on chain wheels at two ends of the chain plate frame, and the second driving motor drives the chain plate to move through the chain wheels and the chains.
The automatic sludge dewatering treatment system comprises the swing cloth module, wherein the swing cloth module comprises a third driving motor, a connecting rod mechanism, a roller driving motor, a roller frame and a plurality of rollers, the rollers are longitudinally and sequentially arranged on the roller frame, the rear end of the roller frame is inclined downwards to the front end, the roller driving motor is arranged on the roller frame, the roller driving motor drives the roller to rotate through a transmission structure, the roller frame is in sliding connection with the frame, the rear end of the roller frame is connected with one end of the connecting rod mechanism, the front end of the roller frame faces the charging basket module, the other end of the connecting rod mechanism is driven by the third driving motor, and the third driving motor drives the roller frame to reciprocate through the connecting rod mechanism.
The automatic sludge dewatering treatment system comprises the charging basket module, the charging basket module and the filter pressing module, wherein the charging basket module comprises a fourth driving motor, a charging basket, a tray and a transmission piece, the charging basket comprises an open basket body, a movable bottom plate is arranged at the inner bottom of the basket body, the charging basket is arranged on the tray, a sliding structure is arranged between the tray and the frame, the tray is clamped with the transmission piece, and the fourth driving motor drives the tray and the charging basket to move between the cloth arranging module and the filter pressing module through the transmission piece; and a lifting mechanism is arranged between the filter pressing module and the cloth swinging module and drives the dehydrated filter cloth sludge layer to move upwards through a bottom plate.
The automatic sludge dewatering treatment system comprises the filter pressing module, the filter pressing module comprises the extrusion mechanism and the drainage groove arranged on the frame, the extrusion mechanism comprises the pressing plate, the hydraulic cylinder and the gate-shaped frame, the gate-shaped frame is fixed with the frame, the pressing plate is positioned below a beam of the gate-shaped frame, the lower end of a piston rod of the hydraulic cylinder passes through the beam of the gate-shaped frame to be fixed with the pressing plate, the pressing plate is matched with a charging basket of the charging basket module, and the hydraulic cylinder drives the pressing plate to move downwards to extrude and dewater a filter cloth sludge layer in the charging basket; the drainage groove is opposite to the drainage port of the charging basket module; the filter pressing module is provided with 2 sets of filter cloth sludge entrainment systems.
The invention provides an automatic sludge dewatering treatment method, which comprises the automatic sludge dewatering treatment system as described in any one of the above, and the method comprises the following steps:
s1, a sludge conveying step, namely starting a pumping module, conveying sludge to a sludge outlet cylinder at the top of a rack through a material pump and a pipeline by a feed bin, and flowing the sludge from a sludge outlet at one side of the sludge outlet cylinder to lower-layer filter cloth paved on a chain plate module;
s2, carrying out sludge entrainment treatment on the filter cloth, wherein the chain plate module is started in a delayed manner to drive the upper filter cloth and the lower filter cloth to carry sludge to move towards a charging basket of the charging basket module;
s3, a cloth-arranging treatment step, namely starting the cloth-arranging module to enable the roller to roll, and enabling the cloth-arranging module to move forwards to drive the filter cloth sludge layer to move forwards, wherein the filter cloth sludge layer falls into the charging basket under the action of gravity; the cloth swinging module moves backwards to drive the filter cloth sludge layer to move backwards, and the filter cloth sludge layer is stacked in the charging basket to be fully loaded by the reciprocating action of the cloth swinging module;
s4, a charging basket moving step, namely, the charging basket is driven by a driving motor of the charging basket module to move to an operating station of the filter pressing module;
s5, starting a filter pressing module, driving a pressing plate to move downwards by a hydraulic cylinder, squeezing a filter cloth sludge layer laminated in a charging basket to dehydrate, and stopping moving upwards again to reset after a set time and multiple times of downward pressing;
s6, resetting and lifting the charging basket, wherein the charging basket moves back to the position above the lifting mechanism, and the lifting mechanism acts to drive the dehydrated filter cloth sludge layer to move upwards by the bottom plate of the charging basket;
s7, a step of separating the filter cloth and the sludge, wherein the upper layer module and the lower layer module are started and reversely rotated to drive the filter cloth and the sludge layer to separate, and the upper layer filter cloth and the lower layer filter cloth are wound and retracted by driving rollers of the upper layer module and the lower layer module respectively, so that the sludge falls into a charging basket; the next cycle then continues from the sludge transfer step.
According to the automatic sludge dewatering treatment method, in the filter pressing step, the pressing plate presses the filter cloth sludge layer to dewater gradually downwards, the set time is 20-40 minutes, and the set pressing times are 15-30 times.
According to the automatic sludge dewatering treatment method, in the charging basket resetting and lifting step, the filter cloth sludge layer moves up to the horizontal height of the chain plate module.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention redesigns the related equipment structure, optimizes the processing flow and process, and reduces the cost and energy consumption by the linkage between modules.
2. The invention realizes automation and double-station operation, reduces labor, improves the use efficiency and reduces the use cost.
3. The method has the advantages that the related data are obtained through multiple experimental tests, after the sludge is dried and dehydrated, the water content of the sludge raw material is about 80% and is dehydrated to about 60%, and for the cultivation industry, the discharged sludge can be directly used for preparing fertilizer by fermenting mixed pig manure, so that the double effects of environmental protection and material recycling are realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a left side view of FIG. 1;
FIG. 5 is a right side view of FIG. 1;
FIG. 6 is a top view of FIG. 1;
FIG. 7 is a bottom view of FIG. 1;
fig. 8 is another state perspective view of fig. 1.
Reference numerals: 10-bin, 101-bin support, 102-bin bottom, 103-bin bottom outlet, 11-material pump, 12-pipeline, 13-mud discharging cylinder, 14-cylinder support, 15-upper baffle and 16-lower baffle;
20-upper first driving motor, 21-upper clutch, 22-upper driving roller, 23-first upper deviation correcting roller, 24-first lower deviation correcting roller, 25-press roller and 26-press roller bracket; 27-a push-push adjustment assembly;
30-lower first driving motor, 31-lower clutch, 32-lower driving roller, 33-second upper deviation correcting roller and 34-second lower deviation correcting roller;
40-a second driving motor, 41-a chain plate and 42-a chain plate frame;
50-third driving motor, 51-connecting rod mechanism, 52-roller driving motor, 53-roller frame and 54-roller;
60-fourth driving motor, 61-charging basket, 62-tray, 63-driving piece, 64-sliding structure and 65-lifting mechanism;
70-pressing plates, 71-hydraulic cylinders and 72-door-shaped frames;
80-a frame, 81-a shell.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is apparent that the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
According to fig. 1-8, this embodiment discloses an automatic sludge dewatering system, which comprises a frame 80, wherein a filter cloth sludge entrainment system and a filter pressing module are installed on the frame 80. The filter cloth sludge entrainment system comprises a pumping module, an upper layer module, a chain plate module, a lower layer module, a cloth swinging module and a charging basket module.
The filter pressing module of this embodiment can dispose 2 sets of filter cloth mud and smuggle the system secretly to realized automation and duplex operation, reduced the manual work, improved availability factor, reduced use cost.
The frame 80 of this embodiment is used as a mounting, positioning and supporting bracket for each module of the filter cloth sludge entrainment system, so that each module is conveniently arranged. A housing 81 is provided outside the filter press module to protect the safety of the filter press process. In addition, the related equipment structure is redesigned according to the defects of the existing vertical filter pressing mode, so that the treatment flow and process are optimized, and the cost and energy consumption are reduced through the linkage between modules.
The filter cloth sludge entrainment system is structurally characterized in that an upper layer module and a lower layer module are respectively positioned on the upper side and the lower side of the chain plate module, the lower layer module is used for providing or recovering lower layer filter cloth, the upper layer module is used for providing or recovering upper layer filter cloth, and the lower layer filter cloth and the upper layer filter cloth move along with the chain plate 41 of the chain plate module. In the using process, the upper layer filter cloth and the lower layer filter cloth are released by the upper layer module and the lower layer module respectively to carry out sludge conveying, extrusion and dehydration and then are respectively retracted and wound, so that automatic material distribution and recycling can be realized.
The pumping module is used for conveying sludge and flowing onto the lower-layer filter cloth through the sludge outlet, and then the upper-layer filter cloth covers the sludge, so that the upper-layer filter cloth and the lower-layer filter cloth entrain the sludge, and a filter cloth sludge layer is formed to move along with the chain plate module to the position of the charging basket 61 of the charging basket module. Meanwhile, the cloth swing module reciprocates to sequentially laminate the filter cloth sludge layers in the basket 61 of the basket module. The filter pressing module is used for squeezing and dehydrating the filter cloth sludge layers stacked in the charging basket 61; after dehydration, the upper layer module and the lower layer module are reversed to drive the filter cloth and sludge layer to separate, and the upper layer filter cloth and the lower layer filter cloth are respectively retracted by the upper layer module and the lower layer module. The dewatered sludge falls into a charging basket 61 and is collected and removed by a collecting mechanism.
As shown in fig. 1, 2 and 8, the pumping module adopted in this embodiment includes a bin 10, a material pump 11, a pipe 12, a mud discharging barrel 13, a barrel bracket 14 and two sets of mud discharging baffle assemblies.
Wherein, the feed bin 10 is open structure to conveniently carry out mechanical equipment and carry out mud material loading. The bin bottom 102 is of an inclined funnel-shaped structure, and can flow by utilizing the gravity of the sludge, so that the water-containing sludge is convenient to convey, and the energy consumption is reduced. The feed bin 10 is installed above the material pump 11 through the feed bin support 101, and the feed bin bottom outlet 103 is directly communicated with the inlet of the material pump 11.
The mud discharging cylinder 13 is positioned at the upper part of the frame 80, is fixed with the frame 80 through cylinder brackets 14 at two longitudinal ends, one side of the mud discharging cylinder 13 is communicated with an outlet of the material pump 11 through a pipeline 12, and a mud discharging opening is formed at the other side of the mud discharging cylinder 13. The pipeline 12 adopts a hose, is convenient to be installed and connected with other parts, and can reduce the sludge conveying resistance and avoid sludge adhesion and blockage. The mud outlet of the mud outlet cylinder 13 is positioned above the chain plate module, so that the mud can flow out to the lower layer filter cloth by utilizing gravity, and the flow speed of the mud discharging is kept stable.
Two sets of mud baffle assemblies are respectively installed at two ends of the mud discharging barrel 13, each mud baffle assembly comprises an electric cylinder, a middle connecting rod, an upper baffle 15 and a lower baffle 16, one ends of the upper baffle 15 and the lower baffle 16 are hinged with the barrel support 14, the other ends of the upper baffle 15 and the lower baffle 16 extend out towards the mud discharging opening side of the mud discharging barrel 13, the electric cylinders are installed at the end parts of the mud discharging barrel 13, the free ends of piston rods of the electric cylinders are hinged with the middle connecting rod, and the middle connecting rod is installed between the upper baffle 15 and the lower baffle 16.
The mud discharging process of the pumping module can also be called as mud feeding process according to the working sequence, namely, mud slurry is sucked into the hose through the bin 10 and the material pump 11 and then enters the subsequent module of the embodiment for dehydration treatment. When the electric cylinder is in operation, the piston rod is controlled by the electric cylinder to drive the middle connecting rod, so that the upper baffle 15 and the lower baffle 16 on the two sides can be lifted and lowered. When the sludge is discharged, the upper baffle plates 15 and the lower baffle plates 16 on the two sides fall onto the filter cloth, so that the sludge discharged from the sludge outlet is stored, and the overflow is prevented.
As shown in fig. 2, 6 and 8, the upper module and the lower module adopted in this embodiment respectively include a first driving motor, a clutch, and a driving roller, an upper deviation correcting roller and a lower deviation correcting roller which are longitudinally arranged in parallel, where the first driving motor is fixed with the frame 80, the driving roller is driven by a rotating shaft of the first driving motor through the clutch, and the driving roller is used for providing or retracting the lower filter cloth and the lower filter cloth, two ends of the upper deviation correcting roller and the lower deviation correcting roller are connected with the frame 80 through mounting seats, and the upper deviation correcting roller and the lower deviation correcting roller are respectively arranged on the upper side and the lower side of the driving roller; the upper layer module is provided with a parallel press roller 25 at the rear side of the lower deviation correcting roller, the press roller 25 is hinged with a frame 80 through a press roller bracket 26, and the press roller 25 is used for spreading, pressing and leveling a filter cloth sludge layer moving along with the chain plate module.
For ease of understanding, the components of the upper module and the lower module are described separately, that is, the upper module includes an upper first driving motor 20, an upper clutch 21, an upper driving roller 22, a first upper deviation correcting roller 23, and a first lower deviation correcting roller 24. In addition, a press roller 25, a press roller bracket 26 and a pressing adjustment assembly 27 are also provided in the upper layer module.
The lower layer module comprises a lower first driving motor 30, a lower clutch 31, a lower driving roller 32, a second upper deviation correcting roller 33 and a second lower deviation correcting roller 34.
After the mud comes out from the mud outlet, the mud flows on the lower layer of filter cloth and is covered by the upper layer of filter cloth to form a filter cloth mud layer. The upper layer filter cloth and the lower layer filter cloth are respectively retracted and released by the driving rollers, one side of each driving roller is provided with a corresponding clutch, and the upper side and the lower side of each driving roller are respectively provided with a deviation correcting roller to prevent the upper layer filter cloth and the lower layer filter cloth from deviating.
The press roller 25 in the mud pressing device is movably fixed on the frame 80 through the press roller bracket 26, and the press roller bracket 26 and the press roller 25 are pressed through the pushing and pressing adjusting assembly 27, so that the filter cloth mud layer can be spread and flattened.
The push adjusting assembly 27 may be constructed using a conventional spring and telescopic rod, and applies downward pressure to the pressing roller 25 by the urging force of the spring.
With continued reference to fig. 1-8, the link plate module adopted in this embodiment includes a second driving motor 40, a link plate 41, and a link plate frame 42, where the link plate frame 42 is fixed on the frame 80, two ends of the link plate 41 are provided with chains, the chains are sleeved on chain wheels at two ends of the link plate frame 42, and the second driving motor 40 drives the link plate 41 to move through the chain wheels and the chains.
The chain plate module is mainly used as a workbench for forming a filter cloth sludge layer and spreading sludge, and is also a component for driving the filter cloth sludge layer to move to the positions of the cloth arranging module and the charging basket module.
The cloth swing module adopted in the present embodiment includes a third driving motor 50, a link mechanism 51, a drum driving motor 52, a drum frame 53, and a plurality of drums 54. The rollers 54 are longitudinally and sequentially arranged on the roller frame 53, the rear end to the front end of the roller frame 53 incline downwards, the roller driving motor 52 is arranged on the roller frame 53, the roller driving motor 52 drives the roller 54 to rotate through a transmission structure, the roller frame 53 is in sliding connection with the frame 80, the rear end of the roller frame 53 is connected with one end of the connecting rod mechanism 51, the front end of the roller frame 53 faces the charging basket module, the other end of the connecting rod mechanism 51 is driven by the third driving motor 50, and the third driving motor 50 drives the roller frame 53 to reciprocate through the connecting rod mechanism 51.
The cloth swing module is used for sequentially stacking the filter cloth sludge layers sent by the chain plate module in the charging basket 61.
A sliding rail is arranged at the bottom of the cloth-arranging module, and the third driving motor 50 drives the connecting rod mechanism 51 to act so as to drive the cloth-arranging module to move along the beam sliding rail of the frame 80. In operation, the swing module is moved while the roller 54 is rotated by the independent roller drive motor 52. The cloth arranging module and the filter cloth sludge layer work synchronously, when one layer of filter cloth sludge layer falls to the charging basket 61, the cloth arranging module moves to the edge position of one side of the charging basket 61, and then the fallen filter cloth sludge layer falls on the roller 54. The cloth swing module returns to work reciprocally, so that the filter cloth sludge layers are sequentially stacked in the charging basket 61.
As shown in fig. 3, 7 and 8, the basket module used in the present embodiment includes a fourth driving motor 60, a basket 61, a tray 62 and a transmission 63. The basket 61 comprises an open basket body, a movable bottom plate is arranged at the inner bottom of the basket body, the basket 61 is arranged on the tray 62, and a sliding structure 64 is arranged between the tray 62 and the frame 80. The tray 62 is clamped with the transmission member 63, and the fourth driving motor 60 drives the tray 62 and the charging basket 61 to move between the cloth arranging module and the filter pressing module through the transmission member 63. A lifting mechanism 65 is arranged between the filter pressing module and the cloth swinging module, and the lifting mechanism 65 drives the dewatered filter cloth sludge layer to move upwards through the bottom plate.
The frame 80 is provided with a chute in the area where the basket 61 moves, the chute and pulleys provided below the tray 62 constituting the sliding structure 64. The basket 61 is composed of a housing and a movable bottom plate, and a tray 62 is provided below the basket 61. When the filter cloth sludge filter device works, after the filter cloth sludge layer is fully arranged in the charging basket 61, the charging basket 61 is driven by the fourth driving motor 60 and the transmission piece 63, and the filter cloth sludge layer moves to a filter pressing module area along the sliding groove through the pulley.
As shown in fig. 1 and 8, the filter pressing module used in this embodiment includes a pressing mechanism and a drain tank provided on a frame 80, and the pressing mechanism includes a pressing plate 70, a hydraulic cylinder 71, and a gate frame 72. The door frame 72 is fixed to the frame 80, and a housing 81 is attached to the outer periphery of the door frame 72.
The pressing plate 70 is located below the beam of the door-shaped frame 72, the lower end of a piston rod of the hydraulic cylinder 71 passes through the beam of the door-shaped frame 72 and is fixed with the pressing plate 70, the pressing plate 70 is matched with a charging basket 61 of the charging basket module, and the hydraulic cylinder 71 drives the pressing plate 70 to move downwards to squeeze and dewater the filter cloth sludge layer in the charging basket 61. The drainage channel is opposite to the drainage port of the charging basket module.
The filter-pressing module is arranged at one side of the machine body. Furthermore, as a preferred scheme, the embodiment is provided with double stations, namely, a filter pressing die is provided with 2 sets of filter cloth sludge entrainment systems (a second set of filter cloth sludge entrainment system is not shown in the figure), and two stations share one set of filter pressing modules. Because the filter pressing process is repeated filter pressing for many times, consuming time is longer, and two stations can realize staggered work when duplex position sets up, have improved the availability factor of filter pressing module to reduce whole energy consumption.
Wherein, the filter-pressing module is equipped with the spacing groove in the crossbeam position of frame 80, and when the pulley moved to the spacing groove, clamp plate 70 sensed the signal and pushed down, after pushing down repeatedly, clamp plate 70 risees.
The corresponding basket 61 and tray 62 have openings, which are water outlets, from which water flows out when the platen 70 is pressed down. The cross beam of the frame 80 is provided with a water collecting tank, the position of the water collecting tank along the charging basket 61 corresponds to the position of the water outlet, water flows out from the water outlet in the filter pressing process, flows into the water collecting tank, and the water collecting tank is connected with a hose to discharge water to the outside.
After the sludge in the filter cloth sludge layer is dehydrated, the charging basket 61 returns to the original station along the beam of the frame 80, and the filter cloth sludge layer is lifted by the lifting mechanism 65.
The lifting mechanism 65 is provided with a driving motor, a lifting screw is fixed on the frame 80, after the charging basket 61 returns to the original station, the lifting screw is driven by the driving motor of the lifting mechanism 65 to act, the bottom plate of the charging basket 61 drives the filter cloth sludge layer to lift, and the lifting mechanism 65 is adopted to lift the material to assist the discharging of dry sludge, so that the dry sludge is prevented from falling off from the charging basket 61 in the sludge discharging process.
In the lifting process, the basket body of the charging basket 61 is not lifted, the bottom plate drives the dehydrated filter cloth sludge layer to rise, the driving motor of the upper layer module, the driving motor of the lower layer module and the clutch are electrified and then reversely rotated, and the upper layer filter cloth, the lower layer filter cloth and the sludge which are originally entrained with the dry sludge are separated. Under the action of automatic deviation correction, the upper filter cloth and the lower filter cloth are wound back to the original discharging state, and the dry mud is collected by the collecting mechanism to complete the whole dehydration work. The upper layer filter cloth and the lower layer filter cloth continue to start the sludge conveying work.
Based on the above disclosed structure and description of each module in this embodiment, the working process of the present invention is as follows:
when the device works, firstly, the sludge is conveyed to a hopper, the material pump 11 conveys the sludge to the top chain plate module, the chain plate module is started in a delayed mode, and the filter cloth sludge layer of the upper layer module and the lower layer module is driven to be conveyed to the position of the charging basket 61; the latter cloth laying module is started, while the drum 54 starts to rotate; the cloth swing module moves forwards so as to carry the filter cloth sludge layer forwards, and the filter cloth sludge layer automatically falls into the charging basket 61 under the action of gravity; the cloth swinging module moves backwards to convey cloth to move backwards, so that the state that the cloth is stacked in the basket 61 in a stroke manner is achieved; after a certain number of cyclic operations, the material basket 61 is filled with materials; at this time, the basket 61 is driven by the fourth driving motor 60 to move below the filter pressing module.
The press filtration module starts the pressing plate 70 to press down, after a certain time and times, the filter cloth sludge layer in the charging basket 61 starts to discharge water, and the water flows into the sewage pipe through the drainage groove to be drained. After a certain time and number of times, the pressing plate 70 stops pressing down and starts to rise, and after reaching the original pressing-down height, the basket 61 moves back to the designated position. At this time, the other station carries the filter cloth sludge layer basket 61 to repeat the above-mentioned actions.
After the basket 61 moves back, the lifting mechanism 65 at the lower part of the basket 61 works, and the movable bottom plate in the basket 61 lifts the pressed material to a certain height by transmission and then stops. Finally, the clutches of the upper layer module and the lower layer module are electrified and sucked, the driving motor drives the driving roller to rotate reversely, the upper layer filter cloth and the lower layer filter cloth start to separate, meanwhile, dry mud is separated at the moment, the filter cloth is wound back to the original discharging state under the action of automatic deviation correction, and the action of conveying the mud is continuously started and repeated.
The embodiment discloses an automatic sludge dewatering treatment method, which comprises the automatic sludge dewatering treatment system, and comprises the following steps: a sludge conveying step, a filter cloth sludge entrainment treatment step, a cloth swing treatment step, a charging basket 61 moving step, a filter pressing step, a charging basket 61 resetting and lifting step and a filter cloth sludge separation step. The specific process is as follows:
s1, a sludge conveying step, namely starting a pumping module, conveying sludge to a sludge outlet cylinder 13 at the top of a rack 80 through a material pump 11 and a pipeline 12 by a material bin 10, and flowing the sludge from a sludge outlet at one side of the sludge outlet cylinder 13 to lower-layer filter cloth paved on a chain plate module;
s2, carrying out sludge entrainment treatment on the filter cloth, wherein a chain plate module is started in a delayed manner to drive upper-layer filter cloth and lower-layer filter cloth to carry sludge to move towards a charging basket 61 of a charging basket module;
the upper layer filter cloth and the lower layer filter cloth carry sludge to form a filter cloth sludge layer, and the sludge is flattened by a press roller 25 in the moving process.
S3, a cloth-arranging treatment step, wherein a cloth-arranging module is started to enable the roller 54 to roll, and the cloth-arranging module moves forwards to drive the filter cloth sludge layer to move forwards, so that the filter cloth sludge layer falls into the charging basket 61 under the action of gravity; the cloth swing module moves backwards to drive the filter cloth sludge layer to move backwards, and the filter cloth sludge layer is stacked in the charging basket 61 until the charging basket 61 is fully loaded through the reciprocating action of the cloth swing module;
s4, a charging basket moving step, namely, a charging basket 61 is driven by a driving motor of a charging basket module to move to a filter pressing module operation station;
and S5, starting a filter pressing module, driving the pressing plate 70 to move downwards by the hydraulic cylinder 71, squeezing the layered filter cloth sludge layers in the charging basket 61 to dehydrate, and stopping moving upwards again for resetting after a set time and multiple times of downward pressing.
In the filter pressing step, the pressing plate 70 presses the filter cloth sludge layer to dewater gradually and downwards, the set time is 20-40 minutes, and the set pressing times are 15-30 times.
S6, resetting and lifting the charging basket 61, wherein the charging basket 61 moves back to the position above the lifting mechanism 65, and the lifting mechanism 65 acts to drive the dehydrated filter cloth sludge layer to move upwards by the bottom plate of the charging basket 61;
s7, a filter cloth and sludge separation step, namely starting and reversing an upper layer module and a lower layer module to drive a filter cloth and sludge layer to separate, wherein the upper layer filter cloth and the lower layer filter cloth are wound and retracted by driving rolls of the upper layer module and the lower layer module respectively, and the sludge falls into a charging basket 61; the next cycle then continues from the sludge transfer step.
The filter cloth is wound back to the original discharging state, the action of sludge conveying is continuously started, the circulation work is realized, and the automatic operation of sludge dewatering and drying treatment is realized.
The test data obtained by the test are shown in the following Table I. The 5 th technical scheme is that after the invention is used for carrying out the sludge dehydration treatment, the raw sludge is dehydrated from about 80% of water content of the raw sludge to about 60% of water content, and after dehydration, the sludge can be directly used for preparing fertilizer by fermenting mixed pig manure.
Meanwhile, the technical scheme of the invention is compared with a plurality of sludge dewatering treatment modes commonly used in the current industry. The belt type extrusion drying and plate frame press filtration are needed to be added with materials such as lime and the like to assist in dehumidification and water absorption. The belt type low-temperature drying and blade drying modes are mainly used for dewatering sludge which is subjected to combustion processing after discharging, although the water content of the discharged material is low, the energy consumption of the two devices is too high, and the same work, and the energy consumption of the two devices is 100 times of the energy consumption of the one-day operation power consumption of the technical scheme of the invention.
List one
The technical content that is not described in detail in the invention is known in the prior art.
Claims (10)
1. The automatic sludge dewatering treatment system comprises a frame and is characterized in that a filter cloth sludge entrainment system and a filter pressing module are arranged on the frame, the filter cloth sludge entrainment system comprises a pumping module, an upper layer module, a chain plate module, a lower layer module, a cloth swing module and a charging basket module, the upper layer module and the lower layer module are respectively positioned on the upper side and the lower side of the chain plate module, the lower layer module is used for providing or recovering lower layer filter cloth, the upper layer module is used for providing or recovering upper layer filter cloth, and the lower layer filter cloth and the upper layer filter cloth move along with the chain plate of the chain plate module; the pumping module is used for conveying sludge and flowing onto the lower-layer filter cloth through the sludge outlet, and the upper-layer filter cloth and the lower-layer filter cloth form a filter cloth sludge layer which moves along with the chain plate module after the sludge is entrained with the sludge; the cloth swinging module reciprocates to sequentially laminate the filter cloth sludge layers in the charging basket of the charging basket module; the filter pressing module is used for squeezing and dehydrating the filter cloth sludge layers stacked in the charging basket; after dehydration, the upper layer module and the lower layer module are reversed to drive the filter cloth and sludge layer to separate, and the upper layer filter cloth and the lower layer filter cloth are respectively retracted by the upper layer module and the lower layer module.
2. The automatic sludge dewatering treatment system according to claim 1, wherein the pumping module comprises a material bin, a material pump, a pipeline, a sludge outlet cylinder, a cylinder support and two sets of sludge outlet baffle assemblies, the material bin is arranged above the material pump, an outlet at the bottom of the material bin is communicated with an inlet of the material pump, the sludge outlet cylinder is fixed with the frame through the cylinder support at two longitudinal ends, one side of the sludge outlet cylinder is communicated with the material pump through the pipeline, the other side of the sludge outlet cylinder is provided with a sludge outlet, and the sludge outlet is positioned above the chain plate module; two sets of mud baffle assemblies are respectively installed at two ends of a mud outlet cylinder, each mud baffle assembly comprises an electric cylinder, a middle connecting rod, an upper baffle and a lower baffle, one ends of the upper baffle and the lower baffle are hinged to a cylinder support, the other ends of the upper baffle and the lower baffle extend out towards the mud outlet side of the mud outlet cylinder, the electric cylinders are installed at the end parts of the mud outlet cylinder, the free ends of piston rods of the electric cylinders are hinged to the middle connecting rod, and the middle connecting rod is installed between the upper baffle and the lower baffle.
3. The automatic sludge dewatering treatment system according to claim 1, wherein the upper layer module and the lower layer module respectively comprise a first driving motor, a clutch, a driving roller, an upper deviation correcting roller and a lower deviation correcting roller which are longitudinally arranged in parallel, the first driving motor is fixed with the frame, a rotating shaft of the first driving motor drives the driving roller through the clutch, the driving roller is used for providing or recovering lower layer filter cloth and lower layer filter cloth, two ends of the upper deviation correcting roller and the lower deviation correcting roller are connected with the frame through mounting seats, and the upper deviation correcting roller and the lower deviation correcting roller are respectively arranged on the upper side and the lower side of the driving roller; the upper layer module is provided with parallel press rolls at the rear side of the lower deviation correcting roll, the press rolls are hinged with the frame through press roll supports, and the press rolls are used for spreading, pressing and leveling filter cloth sludge layers moving along with the chain plate modules.
4. The automatic sludge dewatering treatment system according to claim 1, wherein the chain plate module comprises a second driving motor, a chain plate and a chain plate frame, the chain plate frame is fixed on the frame, chains are arranged at two ends of the chain plate, the chains are sleeved on chain wheels at two ends of the chain plate frame, and the second driving motor drives the chain plate to move through the chain wheels and the chains.
5. The automatic sludge dewatering treatment system according to claim 1, wherein the cloth swing module comprises a third driving motor, a connecting rod mechanism, a roller driving motor, a roller frame and a plurality of rollers, the rollers are longitudinally and sequentially arranged on the roller frame, the rear end of the roller frame is inclined downwards to the front end, the roller driving motor is arranged on the roller frame, the roller driving motor drives the roller to rotate through a transmission structure, the roller frame is in sliding connection with the frame, the rear end of the roller frame is connected with one end of the connecting rod mechanism, the front end of the roller frame faces the basket module, the other end of the connecting rod mechanism is driven by the third driving motor, and the third driving motor drives the roller frame to reciprocate through the connecting rod mechanism.
6. The automatic sludge dewatering treatment system according to claim 1, wherein the charging basket module comprises a fourth driving motor, a charging basket, a tray and a transmission piece, the charging basket comprises an open basket body, a movable bottom plate is arranged at the inner bottom of the basket body, the charging basket is arranged on the tray, a sliding structure is arranged between the tray and the rack, the tray is clamped with the transmission piece, and the fourth driving motor drives the tray and the charging basket to move between the cloth swinging module and the filter pressing module through the transmission piece; and a lifting mechanism is arranged between the filter pressing module and the cloth swinging module and drives the dehydrated filter cloth sludge layer to move upwards through a bottom plate.
7. The automatic sludge dewatering treatment system according to claim 1, wherein the filter pressing module comprises an extrusion mechanism and a drainage groove arranged on a frame, the extrusion mechanism comprises a pressing plate, a hydraulic cylinder and a door-shaped frame, the door-shaped frame is fixed with the frame, the pressing plate is positioned below a beam of the door-shaped frame, the lower end of a piston rod of the hydraulic cylinder passes through the beam of the door-shaped frame to be fixed with the pressing plate, the pressing plate is matched with a charging basket of the charging basket module, and the hydraulic cylinder drives the pressing plate to move downwards to extrude and dewater a filter cloth sludge layer in the charging basket; the drainage groove is opposite to the drainage port of the charging basket module; the filter pressing module is provided with 2 sets of filter cloth sludge entrainment systems.
8. An automatic sludge dewatering treatment method, characterized by comprising the automatic sludge dewatering treatment system according to any one of claims 1 to 7, the method comprising the steps of:
s1, a sludge conveying step, namely starting a pumping module, conveying sludge to a sludge outlet cylinder at the top of a rack through a material pump and a pipeline by a feed bin, and flowing the sludge from a sludge outlet at one side of the sludge outlet cylinder to lower-layer filter cloth paved on a chain plate module;
s2, carrying out sludge entrainment treatment on the filter cloth, wherein the chain plate module is started in a delayed manner to drive the upper filter cloth and the lower filter cloth to carry sludge to move towards a charging basket of the charging basket module;
s3, a cloth-arranging treatment step, namely starting the cloth-arranging module to enable the roller to roll, and enabling the cloth-arranging module to move forwards to drive the filter cloth sludge layer to move forwards, wherein the filter cloth sludge layer falls into the charging basket under the action of gravity; the cloth swinging module moves backwards to drive the filter cloth sludge layer to move backwards, and the filter cloth sludge layer is stacked in the charging basket to be fully loaded by the reciprocating action of the cloth swinging module;
s4, a charging basket moving step, namely, the charging basket is driven by a driving motor of the charging basket module to move to an operating station of the filter pressing module;
s5, starting a filter pressing module, driving a pressing plate to move downwards by a hydraulic cylinder, squeezing a filter cloth sludge layer laminated in a charging basket to dehydrate, and stopping moving upwards again to reset after a set time and multiple times of downward pressing;
s6, resetting and lifting the charging basket, wherein the charging basket moves back to the position above the lifting mechanism, and the lifting mechanism acts to drive the dehydrated filter cloth sludge layer to move upwards by the bottom plate of the charging basket;
s7, a step of separating the filter cloth and the sludge, wherein the upper layer module and the lower layer module are started and reversely rotated to drive the filter cloth and the sludge layer to separate, and the upper layer filter cloth and the lower layer filter cloth are wound and retracted by driving rollers of the upper layer module and the lower layer module respectively, so that the sludge falls into a charging basket; the next cycle then continues from the sludge transfer step.
9. The automatic sludge dewatering treatment method according to claim 8, wherein the press filtration step is performed in such a manner that the press plate presses the filter cloth sludge layer to dewater gradually and downwardly, the set time is 20-40 minutes, and the set number of pressing times is 15-30.
10. The automatic sludge dewatering treatment method according to claim 8, wherein in the basket resetting and lifting step, the filter cloth sludge layer is moved up to the horizontal height of the link plate module.
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| CN110526538A (en) * | 2019-08-24 | 2019-12-03 | 聂麒曌 | Intelligent sludge handles solid-liquid separation system |
| CN111348815A (en) * | 2020-04-10 | 2020-06-30 | 中国科学院城市环境研究所 | Sludge dewatering and drying device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526538A (en) * | 2019-08-24 | 2019-12-03 | 聂麒曌 | Intelligent sludge handles solid-liquid separation system |
| CN111348815A (en) * | 2020-04-10 | 2020-06-30 | 中国科学院城市环境研究所 | Sludge dewatering and drying device and method |
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