CN111921239B - Cloth mud pressure filter device - Google Patents
Cloth mud pressure filter device Download PDFInfo
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- CN111921239B CN111921239B CN202010890851.3A CN202010890851A CN111921239B CN 111921239 B CN111921239 B CN 111921239B CN 202010890851 A CN202010890851 A CN 202010890851A CN 111921239 B CN111921239 B CN 111921239B
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- 239000004744 fabric Substances 0.000 title claims abstract description 93
- 238000009826 distribution Methods 0.000 claims abstract description 87
- 238000003825 pressing Methods 0.000 claims abstract description 87
- 239000000463 material Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000011085 pressure filtration Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 23
- 230000018044 dehydration Effects 0.000 abstract description 7
- 238000006297 dehydration reaction Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 description 26
- 239000003921 oil Substances 0.000 description 20
- 238000001914 filtration Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/30—Feeding devices ; Discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
- B01D25/343—Particular measures for replacing or isolating one or more filtering elements; Transport systems for the filtering apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/38—Removal of the filter cakes by moving parts, e.g. scrapers, contacting stationary filter elements sprayers
- B01D25/386—Nozzles
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a mud distribution pressure filtration device, which comprises a mud distribution machine and a filter press which are matched to work; the mud distributing machine comprises a mud distributing main pipe, a plurality of mud distributing branch pipes and a movable supporting mechanism; the filter press is arranged beside a material distribution outlet of the mud distribution machine and comprises a filter pressing assembly, a lifting mechanism and a press machine. The solid-liquid separation mud-discharging speed of the filter press cloth mud device is high, the dehydration rate is high, the requirement on the filter cloth is low, and the occupied area is small.
Description
Technical Field
The invention belongs to the technical field of solid-liquid separation, and particularly relates to a mud distribution pressure filtration device.
Background
The process of separating solids from liquids is solid-liquid separation, and there are many methods, sedimentation, filtration, membrane filtration, press filtration, vacuum, centrifuge, etc. The common solid-liquid separation equipment in the prior art comprises a spiral shell stacking machine, a cloth belt type filter press, a spiral solid-liquid separator and a plate-and-frame filter press.
The disadvantage of the spiral shell-overlapped sludge dehydrator is that: 1. the maximum treatment capacity of the designed machine type is about 400-800kg/h of the absolute sludge, and enterprises with the large sewage treatment plant of more than 30 ten thousand tons may need more; 2. the spiral shell stacking machine cannot process sludge containing sand, stone and other hard particles, otherwise, the dynamic and static rings and the screw shaft are worn; 3. the treated sludge must be added with flocculant and can form good flocs for treatment, otherwise, the phenomenon of mud leakage of a dynamic ring and a static ring is easy to occur; 4. the equipment realizes continuous operation, and the water content of the sludge is generally about 80%.
The cloth belt filter press belongs to a continuous working device, and has larger treatment capacity; is generally used for large sewage treatment plants, water works and the like. Disadvantages: the sludge has high water content, high energy consumption and difficult maintenance.
Screw extrusion type solid-liquid separator structure: after the solid-liquid mixture enters the separator, the material is conveyed and pressed under pressure by the rotation action of the screw rod, the liquid component is pressed into the screen, and the solid part is collected at the lower part of the separator. It is suitable for the solid content of fecal sewage of 5-10% and the water content of extruded solid of 65-70%.
The plate-and-frame filter press has the advantages that: the device belongs to an indirect working device, and the treatment capacity is smaller than that of a belt conveyor; generally, the method is used for the dehydration of plant sludge, the solid-liquid separation of chemical intermediates and the like, and has low solid water content. The disadvantage is that the treatment capacity is small and the filter cloth replacement is troublesome.
The technological principles of the filter pressing devices are different due to different structural forms, but from the aspects of dehydration effect and automation degree, no device can operate fully automatically and ensure that the dehydration rate is below 38%. Meanwhile, the existing filter pressing system is relatively low in automation degree, high in labor cost, large in occupied area, low in mud cake discharging speed and high in requirement on filter cloth.
Disclosure of Invention
The invention aims to provide a mud-distributing and pressure-filtering device so as to realize the effects of high mud-separating speed, high dehydration rate, low requirement on filter cloth and small occupied area of the mud-distributing and pressure-filtering device.
The invention adopts the following technical scheme: the mud distribution and filtration device comprises a mud distribution machine and a filter press which are matched to work;
wherein, cloth mud machine includes:
a mud distribution main pipe for conveying the materials to be treated;
A plurality of cloth mud branch pipes, from top to bottom set up side by side in proper order, every cloth mud branch pipe: the inlet ends of the two mud distribution nozzles are communicated with a mud distribution main pipe, and the outlet ends of the two mud distribution nozzles are provided with mud distribution nozzles for distributing materials;
The movable supporting mechanism is used for providing a platform for reciprocating the mud distribution main pipe and the plurality of mud distribution branch pipes in the horizontal direction;
the filter press sets up in the cloth of cloth mud machine export by including:
A filter pressing assembly comprising a plurality of filter pressing plates which are horizontally arranged in sequence from top to bottom, wherein the upper surface of each filter pressing plate 15 is used for distributing materials;
The lifting end of the lifting mechanism is connected to the filter pressing assembly, and the lifting action of the lifting mechanism is used for respectively realizing two functions: driving each filter press plate to rise and enabling gaps to be formed between adjacent filter press plates; driving each filter press plate to descend and enabling each filter press plate to be in close contact;
the press is vertically arranged at the top of the press filtration assembly and is used for pressing the press filtration assembly downwards to press-filter materials;
The mud distribution branch pipe is used for horizontally moving forward to place a plurality of mud distribution nozzles on the mud distribution branch pipe in the gap for distribution when gaps are generated between the adjacent filter pressing plates; and the device is also used for horizontally backing to withdraw from the gap after the cloth is finished, and restarting the press.
Further, the movable supporting mechanism includes:
the support frame is arranged on the mud distribution main pipe or any one of the mud distribution branch pipes, and the support frame is provided with a sliding block;
The support is provided with a track matched with the sliding block and used for realizing horizontal reciprocating movement of the support frame on the support;
And the end part of the telescopic rod of the mud distribution oil cylinder is connected to the support frame and is used for realizing the movement of the sliding block on the track through the telescopic action of the telescopic rod, thereby realizing the horizontal reciprocating movement of the mud distribution branch pipe.
Further, a mud limiting plate for limiting the thickness of the cloth mud and a filter cloth cleaning nozzle for cleaning the cloth mud nozzle are arranged beside the outlet of the cloth mud nozzle of each cloth mud branch pipe.
Further, the elevating mechanism includes:
The hanging plates are connected and arranged between the adjacent filter pressing plates, and are used for keeping the distance between the filter pressing plates within a certain interval range in a separated state;
The telescopic rod of the jacking oil cylinder is connected to one filter pressing plate at the topmost layer, and the bottom of the cylinder body of the jacking oil cylinder is fixedly arranged on the bottom plate; the telescopic rod is used for realizing the distance adjustment between the filter press plates through the telescopic action of the telescopic rod.
Further, the press includes:
A press upper platen;
a main press cylinder, the cylinder body of which is fixedly connected to the upper platform of the press;
The pressing table of the pressing machine is connected to the end part of the telescopic rod of the main pressing machine oil cylinder;
Four filter pressing board guide posts are vertically arranged between the upper platform and the bottom plate of the press and are positioned around the main press oil cylinder.
Further, the filter pressing plate comprises:
the water permeable plate is of a flat plate structure provided with a plurality of water permeable holes;
the bottom sealing plate is arranged below the water permeable plate at intervals, a closed water containing space is formed between the bottom sealing plate and the water permeable plate, and a water outlet is formed in the side part of the bottom sealing plate;
The filter cloth is horizontally and annularly arranged on the water permeable plate and the bottom sealing plate, the upper surface of the filter cloth is used for placing materials to be distributed, and the filter cloth is also used for rotating around the water permeable plate and the bottom sealing plate and then outputting the materials to be distributed after filter pressing outwards;
And the rubber sealing strip is arranged at the bottom of the bottom sealing plate.
Further, a groove is formed in the periphery of the outer side of the bottom sealing plate, a plurality of compression springs are vertically arranged in the groove, one end of each compression spring is fixedly arranged at the bottom sealing plate, and the other end of each compression spring is connected with a reset plate.
Further, the filter pressing plate further comprises:
the two mud scraping plates are connected with the side wall of the bottom sealing plate and are respectively positioned on the feeding side and the discharging side of the filter pressing plate.
Further, the filter pressing plate further comprises:
And the four guide sleeves are of annular structures, are arranged on two sides of the bottom sealing plate and are correspondingly sleeved on the guide posts of each filter pressing plate.
The second technical scheme adopted by the invention is that the working method of the mud-distribution pressure filtration device is implemented according to the following steps:
s1, lifting an oil cylinder to separate each laminated filter plate;
S2, the mud distributing oil cylinder stretches out to push the mud distributing nozzle to enter between the laminated filter plates for mud distribution; after the mud distribution is finished, the mud distribution cylinder contracts to drive the mud distribution nozzle to retract;
s3, the jacking oil cylinder descends to drive each laminated filter plate to be tightly attached, and meanwhile, the press presses down each filter plate to filter the materials.
The beneficial effects of the invention are as follows:
1. The invention provides another mud-distributing pressure filtration device with a brand new structure, wherein each layer of filter plate is provided with a roller for rotation to drive the filter cloth to rotate and be used for mud discharging, so that each layer can simultaneously discharge mud, and the overall mud discharging efficiency is high;
2. The press machine is a four-column press machine, and the material between filter cloth is forcedly dehydrated, and the maximum tonnage of the press machine can reach 320t, so the maximum dehydration rate can reach about 38 percent.
3. The filter cloth in the invention is a closed annular structure arranged around each filter pressing plate, and the length of each filter pressing plate is usually 1-2 m, so that the requirements on the pressure bearing capacity and softness of the filter cloth are reduced, and only the requirement on the water permeability is met.
4. The filter cloth of the filter press is longitudinally overlapped, the mud distribution and the filter pressing can be completed at the same station, and compared with a multi-station press, the floor space is reduced.
Drawings
FIG. 1 is a front view of a mud spreader of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic diagram of the mud-distributing pressure filter device in the mud-distributing state;
FIG. 5 is a schematic diagram of the structure of the mud-distribution filter device in the filter-pressing state;
FIG. 6 is a front view of a filter plate of the cloth filter press of the present invention;
FIG. 7 is a top view of FIG. 6;
Fig. 8 is a longitudinal cross-sectional view of fig. 6.
The hydraulic system comprises a press, a press upper platform, a main press oil cylinder, a press pressing platform, a press filter plate guide pillar, a press filter plate, a filter cloth cleaning nozzle, a bottom plate, a jacking oil cylinder, a sliding block, a mud distribution oil cylinder, a bracket, a mud distribution nozzle, a hanging plate, a mud limiting plate, a track, a bottom sealing plate, a rubber sealing strip, a compression spring, a water permeable plate, a reset plate, a mud scraping plate, a water outlet, a guide sleeve, a groove and a drainage groove, wherein the main press oil cylinder, the press upper platform, the main press oil cylinder, the press pressing platform, the press filter plate guide pillar, the press filter plate, the filter cloth cleaning nozzle, the bottom plate, the jacking oil cylinder, the sliding block, the mud distribution oil cylinder, the bracket, the mud distribution nozzle, the hanging plate and the water draining groove. 41. A mud distribution main pipe, 42 a mud distribution branch pipe and 43 a support frame.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
1. The invention provides a mud distribution pressure filtration device, which comprises a mud distribution machine and a filter press arranged beside a mud distribution nozzle 22 of the mud distribution machine, and comprises a filter pressing assembly, a lifting mechanism and a press machine 1, as shown in figures 4-5. The filter press and the mud distributing machine are two devices which work cooperatively, when each filter press plate 15 of the filter press is opened, the mud distributing nozzle 22 horizontally advances between each filter press plate 15 to start mud distribution; when the press filter starts to press the filter, the mud distribution nozzle 22 horizontally retreats to stop distributing mud, and each press filter plate 15 is combined and press-filters the materials distributed among each press filter plate 15. The material to be treated can be sewage treatment plant sludge, grain processing plant sludge, brewery sludge, dairy product plant sludge and separated kitchen garbage.
1. As shown in fig. 1 to 3, the mud distributor includes a mud distribution main 41, a plurality of mud distribution branch pipes 42, and a moving support mechanism. The specific structure is described as follows:
1.1, a mud distribution main pipe 41 can be arranged vertically generally and is used as an inlet for conveying materials to be treated; is communicated with an outlet of the conditioning tank 3; the plurality of mud distributing branch pipes 42 are arranged side by side in sequence from top to bottom, each mud distributing branch pipe 42 comprises an outlet end and an inlet end, the outlet ends of the mud distributing branch pipes are provided with mud distributing nozzles 22 for distributing materials, and the inlet ends of the mud distributing branch pipes are communicated with the mud distributing main pipe 41. Wherein, a mud limiting plate 44 for limiting the mud thickness and a filter cloth cleaning nozzle 16 for cleaning the mud distributing nozzles 22 are arranged beside the outlet of each mud distributing nozzle 22.
And 1.2, a movable supporting mechanism is used for providing a platform for reciprocating the mud distribution main pipe 41 and the plurality of mud distribution branch pipes 42 in the horizontal direction. Specifically comprising a support 43, a bracket 45 and a mud distribution cylinder 20. The support frame 43 is connected with the main sludge distribution pipe 41 or any branch sludge distribution pipe 42, and is used for combining the main sludge distribution pipe 41 and a plurality of branch sludge distribution pipes 42 into a whole structure, and the support frame 43 is provided with a slide block 19. The support 45 is a fixed-position support structure, the track 25 matched with the slide block 19 is arranged on the support structure, the slide block 19 can horizontally reciprocate along the track 25, the movement of the slide block 19 can be transmitted to the mud distribution main pipe 41 and the plurality of mud distribution branch pipes 42 through the support frame 43, and then the horizontal reciprocation of the mud distribution nozzle 22 is finally realized. The end of the telescopic rod of the mud distributing cylinder 20 is connected to the supporting frame 43, so as to realize the movement of the sliding block 19 on the track 25 through the telescopic action of the telescopic rod, thereby realizing the horizontal reciprocating movement of the mud distributing branch pipe 42. Provides a foundation for realizing intermittent mud distribution in the follow-up process.
1.3, A support frame 43 and a support frame 45 are formed by welding profile steel, a mud distribution main pipe 41 and each mud distribution branch pipe 42 are supported by the support frame 43, a track 25 is arranged on the support frame 45, and the position of the track 25 is fixed. The mud distributing oil cylinder 20 extends forwards, the mud distributing main pipe 41 drives each mud distributing branch pipe 42 and the sliding block 19 to slide forwards on the track 25, the mud distributing nozzle 22 enters between adjacent filter pressing plates 15, the electric valves of the mud distributing oil cylinder 20 and the uppermost three layers of mud distributing branch pipes 42 are opened, materials to be treated are sprayed on filter cloth of the filter pressing plates 15 of the upper three layers in a solid-liquid mixture mode, a driving motor of the filter cloth of the filter pressing plates 15 rotates leftwards, the filter cloth moves forwards with the solid-liquid mixture, and the solid-liquid mixture is uniformly distributed on the filter cloth between the layers of the filter pressing plates 15 through the mud limiting plates 14 in front of the mud distributing nozzle 22. Next, by analogy, each three layers are arranged at intervals from top to bottom until the cloth is finished after the solid-liquid mixture is uniformly distributed on the filter cloth of all the filter press plates, the rods of the cloth mud cylinders 20 are retracted, the whole cloth mud brackets 43 are retracted, the cloth mud nozzles 22 also exit the layers of the filter press plates 15, and the work is stopped after the backward travel of the cloth mud cylinders 20 is finished.
The number of the sludge distribution branch pipes 42 is determined according to the number of the filter pressing plates 15, and the number of the filter pressing plates 15 is reduced by one, namely the number of the sludge distribution branch pipes 42, and the working principles of the sludge distribution branch pipes 42 are the same.
2. The filter press comprises a filter pressing assembly, a lifting mechanism and a press machine 1, and the specific structure is as follows:
2.1, filter pressing subassembly, including a plurality of filter presses 15 that set up one by one from top to bottom, the upper surface of each filter press 15 is used for the cloth.
As shown in fig. 6 to 8, the press plate 15 includes: a water permeable plate 34 having a flat plate structure provided with a plurality of water permeable holes; the bottom sealing plate 31 is arranged below the water permeable plate 34 at intervals, a closed water containing space is formed between the bottom sealing plate and the water permeable plate 34, and a water outlet 37 is formed in the side part of the bottom sealing plate; the filter cloth is horizontally and annularly arranged on the water permeable plate 34 and the bottom sealing plate 31, the upper surface of the filter cloth is used for placing materials to be distributed, and the filter cloth is also used for rotating around the water permeable plate 34 and the bottom sealing plate 31 and then outputting the materials to be distributed after filter pressing outwards; i.e. the filter cloth is used for the mud distribution and the mud discharge. Two rollers can be arranged at two ends of the inside of each layer of filter cloth, one is an unpowered roller, the other is an electric roller, the filter cloth is directly driven to rotate by driving the electric roller, and the mud discharging speed is high. A rubber seal 32 is provided at the bottom of the bottom sealing plate 31.
Wherein, around the outside week of bottom shrouding 31 being equipped with the recess, vertically be provided with a plurality of hold-down springs 33 in the recess, the one end fixed mounting of every hold-down spring 33 is in bottom closure plate 31 department, the other end is connected with reset plate 35. When the filter press plates 15 are pressed and tightly attached, the reset plate 35 of the lower filter press plate 15 generates upward pressure on the upper filter press plate 15 under the action of the pressing spring 33, so that the contact pressure between the adjacent filter press plates 15 is enhanced.
A large amount of liquid is generated around the filter press plate 15 during the press filtration process, and the liquid enters the water containing space through the water permeable plate 34 and is discharged from the water outlet 37.
The filter press plate 15 may further comprise one or two scraper plates 36, typically the scraper plates 36 are connected to the side walls of the bottom sealing plate 31, on the feed side and the discharge side of the filter press plate 15, respectively. The scraper 36 is used for scraping mud to separate the mud cake from the filter cloth.
The filter pressing assembly is a core component of the full-automatic intelligent filter press, and at least two or more filter pressing plates 15 are needed to be simultaneously operated to perform filter pressing operation. When the upper surface of each filter press plate 15 is covered with material, the cylinder 12 of the main press machine descends, and when each upper filter press plate 15 is pressed downwards, in the two adjacent filter press plates 15, the rubber sealing strip 32 at the bottom of the upper filter press plate 15, together with the filter cloth, the material to be treated in a solid-liquid mixed state, and the filter cloth of the lower filter press plate 15 are pressed downwards, the rubber sealing strip 32 of the upper filter press plate 15 drives the double-layer filter cloth to contact with the reset plate 35 in the groove 39 of the lower filter press plate 15, and the upward reaction force generated by the continuously pressing compression spring 33 pushes the upper filter cloth and the rubber sealing strip 32, so that the continuously pressing will be tighter and play a sealing role. But only the mud and not the water, and even if some water leaks, the water leaks into the groove 39, and the bottom of the groove 39 is provided with a drain groove 40.
The material to be treated on the filter cloth is wrapped in a space with the periphery being relatively sealed and cannot overflow, the main press cylinder 12 continues to press downwards, the material to be treated is extruded by the upper laminated filter plate 15 and the lower laminated filter plate 15 in the process, the waste water is extruded, moves downwards under the action of gravity, flows into a closed water containing space between the bottom sealing plate 3 and the water permeable plate 34 through the small holes of the water permeable plate 34, and is converged in the drainage tank 40 until flowing out from the water outlet 37.
2.2, Elevating system is connected to on the filter-pressing subassembly, its elevating system is used for realizing two effects respectively: driving each filter press plate 15 to rise and generating uniform gaps between adjacent filter press plates 15; the respective filter presses 15 are driven downward and brought into close contact with each filter press 15.
The invention provides a specific structure as follows:
The invention uses a plurality of hanging plates 23, each hanging plate 23 is crescent or semicircular, and the hanging plate 23 is a common part. A plurality of hanging plates 23 are connected and arranged between the adjacent filter pressing plates 15, so that the distance between the filter pressing plates 15 is kept within a certain interval range in a separated state. The hanging plates 23 are connected and arranged between the adjacent filter pressing plates 15, when each filter pressing plate 15 needs to be separated, a certain distance can be kept between every two filter pressing plates due to the length limitation of the hanging plates 23; the hanging plate 23 is provided so as not to affect the contact and separation actions of the filter press plate 15, and is only used for limiting the filter press plate 15 not to be separated at will when separated.
And a lifting oil cylinder 18 is also arranged, and the telescopic rod of the lifting oil cylinder is connected with one filter pressing plate 15 at the topmost layer. When the telescopic rod of the jack cylinder 18 is extended and contracted, the respective filter press plates 15 are driven to be lifted and lowered. Meanwhile, the filter press plates 15 are uniformly spaced apart while ascending and closely contact while descending. When the respective filter press plates 15 are at the time of producing uniform intervals, the upper surfaces of the respective filter press plates 15 can be distributed.
The main press cylinder 12 rises to drive the press pressing table 13 to rise, the jacking cylinder 18 rises to drive the uppermost filter pressing plate 15 to move upwards, the semicircular hanging plates 23 on two sides of the filter pressing plate 15 also move upwards to drive the suction and lamination filter plates to drive the next semicircular hanging plate to move upwards, all the filter pressing plates 15 are opened at one time, and the jacking cylinder 18 also has all the travel and pressure maintaining.
2.3, Press 1, vertical setting is in the top of filter-pressing subassembly is used for a plurality of under the filter-pressing board 15 close contact state, to filter-pressing subassembly produces decurrent pressure, in order to accomplish the filter-pressing to the material of cloth. The materials are solid-liquid mixture.
Specifically, the press 1 includes a press upper table 11 whose position is kept fixed; a main press cylinder 12 is provided, comprising a cylinder body and a telescopic rod, wherein the cylinder body is fixedly connected to the press upper platform 11, and the end part of the telescopic rod is connected with a press pressing table 13. The press 1 further comprises four press-filter plate guide posts 14, wherein the four press-filter plate guide posts 14 are vertically arranged around the main press cylinder 12 and are positioned between the press upper platform 11 and the bottom plate 17.
The press plate 15 may further include four guide sleeves 38, where each guide sleeve 38 has an annular structure, and is disposed on two sides of the bottom sealing plate 31, and is used for being correspondingly sleeved on each guide post 14 of the press plate.
2.4. The working process of the filter press comprises the following steps:
The main press cylinder 12 drives the press platen 13 to press down onto the topmost press filter plate 15. The jacking cylinder 18 descends to drive all the filter press plates 15 to descend until all the filter press plates 15 are closed, and at the moment, the pressure of the press 1 is maintained for 10 minutes. In the pressure maintaining process, the filter-pressed wastewater is discharged to a total wastewater collecting pipe through a water outlet 37 on the side surface of the filter-pressing plate 15, the wastewater of the total wastewater collecting pipe directly flows into a wastewater collecting pit and is pumped to a wastewater treatment station for treatment, and the wastewater is discharged to a river channel or a city pipe network after reaching standards. After the pressure is maintained for 10 minutes, the main press cylinder 12 drives the press platen 13 to ascend until the travel is completed. The jacking cylinder 18 acts to jack up to drive each laminated filter plate 15 to be uniformly opened, the solid-liquid substance after press filtration becomes mud cake at the moment, each laminated filter plate 15 acts to rotate the filter cloth through the corresponding driving motor, the filter cloth moves forward towards the mud discharging direction, the mud cake is separated from the filter cloth and falls onto the belt conveyor after passing through the mud scraping plate 36 when going to the end, and the mud cake is sent out of the workshop until the mud cake collecting hopper, so far, the whole press filtration process is finished.
At this time, the sludge pump 20 is turned on, the sludge distributing nozzle 22 is controlled by a group of electromagnetic valves every three routes, the cloth winding motor drives the filter cloth to start to rotate forwards until the material to be treated is fully distributed on the whole filter pressing plate 15, and the motor stops rotating. The mud distributing cylinder 20 is retracted pneumatically, and the entire mud distributing pipeline is retracted and moved out of the space between adjacent filter presses 15. Next, the main press cylinder 12 and the jacking cylinder 18 are simultaneously pressed down until all the press filters 15 are completely closed, and then the pressure is maintained for 10 minutes, and the whole press filter process is finished.
3. The working process of the mud-distribution pressure filtration device is implemented according to the following steps:
S1, lifting the oil cylinder 18 to open each laminated filter plate 15;
s2, the mud distributing cylinder 20 extends out to push the mud distributing nozzle 22 to enter between the laminated filter plates 15 for mud distribution; after the mud distribution is finished, the mud distribution cylinder 20 is contracted to drive the mud distribution nozzle 22 to retract;
And S3, the jacking oil cylinder 18 descends to drive each laminated filter plate 15 to be tightly attached, and the press 1 presses down each filter pressing plate 15 to perform filter pressing.
One working cycle of mud distribution filter pressing is as follows: in a state where a gap is generated between the adjacent filter press plates 15, the sludge distributing branch pipes 42 horizontally move forward to place the plurality of sludge distributing nozzles 22 thereon in the gap for distributing; after the cloth is finished, the cloth mud branch pipe 42 horizontally retreats to withdraw the gap, and then the press 1 is started for press filtration.
Specifically, the press 1 is retracted to the original position, the jacking cylinders 18 are ejected, the laminated filter plates 15 are opened at uniform intervals, and the hanging plate 23 is installed between each laminated filter plate 15. The mud distributing cylinder 20 extends out, the mud distributing nozzles 22 arranged in multiple layers enter the gaps between adjacent layers of the filter pressing plates 15 arranged in multiple layers, and the materials to be treated are conditioned to be solid-liquid mixtures, so that filter pressing can be pumped. The driving motor of each filter press plate 15 acts, the filter cloth will rotate around the filter press plate 15 where it is, the solid-liquid mixture can be sent to the whole filter press plate 15, and mud can be evenly distributed through the limit of the mud scraping plate 36. When the solid-liquid mixture is distributed to the end of the filter pressing plate 15 far away from the mud distributing nozzle 22, the mud pump 20 is controlled to stop working by a sensor arranged on the end, the mud distributing cylinder 20 is retracted, the mud distributing nozzle 22 completely exits from the plate layers of each filter pressing plate 15, and mud distribution is stopped.
According to the invention, the rollers arranged on each layer of filter plates rotate to drive the filter cloth to rotate and are used for discharging mud, so that each layer can discharge mud simultaneously, and the overall mud discharging efficiency is high. Whereas the usual sludge outlet device is a continuous Z-folded filter cloth, the time for which the cake takes to transport and discharge this form of filter cloth is relatively long.
The press machine is a four-column press machine or a frame press machine, and the material between filter cloth is forcedly dehydrated, and the maximum tonnage of the press machine can reach 320t, so that the maximum dehydration rate can reach about 38 percent. The separated product generally comprises mud cake with water content of 38-45% and separated sewage. The purpose of solid-liquid separation is mainly to provide conditions for later mud cake landfill, incineration and organic fertilizer fermentation. Pollution of landfill sites and underground water can be reduced after sludge is dehydrated; the incineration cost can be reduced after the sludge is dehydrated; after the sludge is dehydrated, the fermentation speed of the organic fertilizer can be increased, the pollution to the environment and the atmosphere can be greatly reduced, and the long-term economic benefit and social benefit are realized.
In the prior art, the basic requirement on the filter cloth is that the filter cloth has better water permeability. The commonly used Z-shaped filter cloth arrangement form can use filter cloth with the length of 500 meters at one station, and the filter cloth needs to achieve certain strength because the span of the filter cloth is large and the filter cloth needs to bear certain pressure; however, in order to facilitate folding and to require a certain softness of the filter cloth, a certain required water permeability must be ensured. The requirements for the filter cloth are high in finishing and the cost is high. The filter cloth in the invention is a closed annular structure arranged around each filter pressing plate, and the length of each filter pressing plate is usually 1-2 m, so that the requirements on the pressure bearing capacity and softness of the filter cloth are reduced, and only the requirement on the water permeability is met.
Claims (7)
1. The mud distribution pressure filtration device is characterized by comprising a mud distribution machine and a filter press which work in a matching way;
Wherein, cloth mud machine includes:
a mud distribution main pipe (41) for conveying materials to be treated;
A plurality of mud distribution branch pipes (42), which are arranged side by side in sequence from top to bottom, wherein each mud distribution branch pipe (42): the inlet ends of the two mud distribution main pipes are communicated with the mud distribution main pipe (41), and the outlet ends of the two mud distribution main pipes are provided with mud distribution nozzles (22) for distributing materials;
a movable supporting mechanism for providing a platform for reciprocating the main pipe (41) and the plurality of branch pipes (42) in the horizontal direction;
The filter press, set up in by cloth outlet of cloth mud machine includes:
The filter pressing assembly comprises a plurality of filter pressing plates (15) which are horizontally arranged in sequence from top to bottom, and the upper surface of each filter pressing plate (15) is used for distributing materials;
the lifting end of the lifting mechanism is connected to the filter pressing assembly, and the lifting action of the lifting mechanism is used for respectively realizing two functions: driving each filter press plate (15) to rise and enabling gaps to be formed between adjacent filter press plates (15); driving each filter press plate (15) to descend and enabling each filter press plate (15) to be in close contact;
the press machine (1) is vertically arranged at the top of the filter pressing assembly and is used for pressing down the filter pressing assembly to filter and press materials;
wherein, the mud distributing branch pipe (42) is used for horizontally moving forward to place a plurality of mud distributing nozzles (22) on the mud distributing branch pipe into the gap for distributing when the gap is generated between the adjacent filter pressing plates (15); and is also used for horizontally retreating to withdraw the gap after the cloth is finished, and restarting the press (1);
the movement support mechanism includes:
A support frame (43) arranged on the mud distribution main pipe (41) or any one of the mud distribution branch pipes (42), wherein a sliding block (19) is arranged on the support frame (43);
A support (45) on which a track (25) is provided, matching with the slide, for the horizontal reciprocal movement of the support (43) thereon;
The end part of the telescopic rod of the mud distribution oil cylinder (20) is connected to the supporting frame (43) and is used for realizing the movement of the sliding block (19) on the track (25) through the telescopic action of the telescopic rod so as to realize the horizontal reciprocating movement of the mud distribution branch pipe (42);
A mud limiting plate (44) for limiting the thickness of the mud and a filter cloth cleaning nozzle (16) for cleaning the mud distributing nozzle (22) are arranged beside the outlet of the mud distributing nozzle (22) of each mud distributing branch pipe (42);
The lifting mechanism comprises:
A plurality of hanging plates (23) which are connected and arranged between the adjacent filter pressing plates (15) and are used for keeping the distance between the filter pressing plates (15) within a certain interval range in a separated state;
A jacking cylinder (18) with a telescopic rod connected to one of the press filter plates (15) at the topmost layer, wherein the bottom of the cylinder body of the jacking cylinder (18) is fixedly arranged on the bottom plate (17); the distance between the filter pressing plates (15) is adjusted through the telescopic action of the telescopic rod.
2. A cloth mud press as set forth in claim 1, wherein the press (1) comprises:
a press upper platen (11);
A main press cylinder (12) with a cylinder body fixedly connected to the press upper platform (11);
A press platen (13) connected to the end of the telescopic rod of the main press cylinder (12);
four filter pressing board guide posts (14) are vertically arranged between the upper press platform (11) and the bottom plate (17) and are positioned around the main press oil cylinder (12).
3. The cloth mud press as set forth in claim 2, wherein the press plate (15) comprises:
A water permeable plate (34) which is a flat plate structure provided with a plurality of water permeable holes;
a bottom sealing plate (31) which is arranged below the water permeable plate (34) at intervals, a closed water containing space is formed between the bottom sealing plate and the water permeable plate (34), and a water outlet (37) is formed in the side part of the bottom sealing plate;
The filter cloth is horizontally and annularly arranged on the water permeable plate (34) and the bottom sealing plate (31), the upper surface of the filter cloth is used for placing materials to be distributed, and the filter cloth is also used for rotating around the water permeable plate (34) and the bottom sealing plate (31) and then outputting the materials to be distributed after filter pressing outwards;
And a rubber sealing strip (32) arranged at the bottom of the bottom sealing plate (31).
4. A cloth mud filter press as set forth in claim 3, wherein a groove is provided around the outer circumference of the bottom sealing plate (31), a plurality of hold-down springs (33) are vertically provided in the groove, one end of each hold-down spring (33) is fixedly installed at the bottom sealing plate (31), and the other end is connected with a reset plate (35).
5. The cloth mud press as set forth in claim 3 or 4, wherein the press plate (15) further comprises:
The two scraping plates (36) are connected with the side wall of the bottom sealing plate (31) and are respectively positioned on the feeding side and the discharging side of the filter pressing plate (15).
6. A cloth mud press as set forth in claim 3, wherein the press plate (15) further comprises:
and the four guide sleeves (38), wherein each guide sleeve (38) is of an annular structure, is arranged on two sides of the bottom sealing plate (31) and is correspondingly sleeved on each guide post (14) of the filter pressing plate.
7. A method of operating a cloth mud press filter device as set forth in any one of claims 1 to 6, characterized by the following steps:
s1, lifting an oil cylinder (18) to separate each laminated filter plate (15);
S2, a mud distribution cylinder (20) stretches out to push a mud distribution nozzle (22) to enter between the laminated filter plates (15) for mud distribution; after the mud distribution is finished, the mud distribution cylinder (20) contracts to drive the mud distribution nozzle (22) to retract;
s3, the jacking oil cylinder (18) descends to drive each laminated filter plate (15) to be tightly attached, and meanwhile, the press (1) presses down each filter pressing plate (15) to filter-press the materials.
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| CN113698062B (en) * | 2021-09-07 | 2024-03-08 | 聂麒曌 | Full-automatic horizontal deep solid-liquid separator and working method thereof |
| CN116808655A (en) * | 2023-08-28 | 2023-09-29 | 南京通钰环保科技有限公司 | Vertical squeezer for automatically feeding and discharging cloth and washing cloth in slag |
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| SU1719020A1 (en) * | 1988-10-10 | 1992-03-15 | Предприятие П/Я Р-6273 | Filter press |
| JP3919182B2 (en) * | 2002-06-28 | 2007-05-23 | 月島機械株式会社 | Dehydration drying method using filter press apparatus and filter press apparatus |
| CN201988240U (en) * | 2011-01-28 | 2011-09-28 | 王辉锋 | Closed type filter cloth cleaning device |
| CN104623937A (en) * | 2013-11-07 | 2015-05-20 | 张民良 | Filter element with raw material supply regulator for hydraulic squeezing |
| CN204502505U (en) * | 2015-03-31 | 2015-07-29 | 北京同创碧源水务科技发展有限公司 | Hydraulic pressure closes chamber filter press plate |
| CN205287760U (en) * | 2015-12-07 | 2016-06-08 | 昆山金力诚金属制品有限公司 | Silt separator |
| CN108404474B (en) * | 2018-05-20 | 2020-11-17 | 中国计量大学 | Split type multi-cavity filter-pressing sludge dewatering method |
| CN109045784A (en) * | 2018-09-30 | 2018-12-21 | 青岛核盛智能环保设备有限公司 | Multi-tiered plate filter press |
| CN110526538A (en) * | 2019-08-24 | 2019-12-03 | 聂麒曌 | Intelligent sludge handles solid-liquid separation system |
| CN111087158B (en) * | 2020-01-23 | 2024-01-02 | 江苏矿源环保科技有限公司 | Deep sludge filter pressing dehydration device and dehydration method |
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