CN112239258A - Peripheral transmission type high-speed solid-liquid separation equipment for large-flow circulating granulation fluidized bed - Google Patents
Peripheral transmission type high-speed solid-liquid separation equipment for large-flow circulating granulation fluidized bed Download PDFInfo
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- CN112239258A CN112239258A CN202011089676.4A CN202011089676A CN112239258A CN 112239258 A CN112239258 A CN 112239258A CN 202011089676 A CN202011089676 A CN 202011089676A CN 112239258 A CN112239258 A CN 112239258A
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- 238000005243 fluidization Methods 0.000 claims abstract description 19
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2433—Discharge mechanisms for floating particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
- B01D21/286—Means for gentle agitation for enhancing flocculation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/28—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using special binding agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention provides a peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device, wherein a stirring shaft is driven to rotate by a peripheral transmission type stirring driving motor; the peripheral transmission type stirring driving motor comprises a supporting rail, the stirring driving motor is installed on the supporting rail, the stirring driving motor is connected with a traveling frame, the traveling frame is connected with a central pillar for transmission, and the central pillar drives a stirring shaft to rotate; a water distribution device is arranged in the mixing area; a water collecting device is arranged in the water collecting area; the open top end of the inner cylinder is provided with an inner cylinder mud particle flow guide device which can enable mud particles flowing out of the granulation fluidization area to flow to the reflux area; the top end of the middle cylinder is provided with an outer cylinder mud particle flow guide device, so that mud particles flowing out of the granulation fluidization area flow to the mud settling area. The peripheral transmission type driving motor meets the requirement of high flow rate of stirring and mud scraping integration, the maximum diameter can exceed 20m, and the safety factor of the whole equipment is increased.
Description
Technical Field
The invention belongs to the field of water treatment, relates to a granulation fluidized bed, and particularly relates to a peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device.
Background
In recent years, in the field of feedwater treatment, with increasing emphasis on environmental and resource efficient utilization issues, water purification and wastewater recycling have been more and more emphasized. Therefore, the research of new medicaments and new processes for water quality treatment is a development direction of the research field of water treatment turbidity removal.
With the shortage of water resources, the serious environmental pollution and the deepened implementation of national energy-saving and emission-reducing policies, the task of water pollution treatment is heavier and heavier, the concentration of suspended matters in water is higher and heavier, and the task of removing the suspended matters in a water treatment process is heavier and heavier, so that the development and research of efficient sewage turbidity control devices are inevitable development trends. Various treatment technologies are developed at home and abroad for single high-turbidity water, low-temperature low-turbidity water and high-algae water, and are applied to practical engineering. Such as synergistic clarification technology and agglomeration flocculation technology applied to low-temperature and low-turbidity water; the improved vortex type precipitation technology and the secondary coagulation precipitation technology are applied to high-turbidity water, air floatation technology and ACTIFLO technology, and have strong algae removal capability. The water quality conditions can appear alternately in surface water source water along with seasons, and at present, the main mode for solving the problems is to add a pretreatment and strengthening treatment unit, but a series of problems of complex purification process, large floor area, inconvenient operation and management and the like can be caused. The main mode for solving the problems is to add a pretreatment and strengthening treatment unit, but the problems of complex purification process, large occupied area, inconvenient operation and management and the like are caused.
The prior art discloses a high-low turbidity water quality purification device which is also provided with a reaction area, a separation area and a sludge concentration area, has the treatment capacity of high-turbidity water and low-temperature low-turbidity water, but has no circulating granulation function, has small treatment flow and cannot meet the treatment requirement of large flow.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation equipment, which has the capability of treating various water qualities and solves the technical problems that the existing granulation fluidized bed has small treated water amount and the required power is increased after improvement.
In order to solve the technical problems, the invention adopts the following technical scheme:
a peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device comprises a fluidized bed main body device, wherein the circulating granulation fluidized bed main body device comprises a base frame, a tank body is fixedly arranged on the base frame, and the tank body sequentially comprises a sludge concentration area, a circulating granulation area, a separation area and a water collection area from bottom to top;
the circulating granulation area is internally provided with a middle cylinder and an inner cylinder, the tank body, the middle cylinder and the inner cylinder are coaxially arranged from outside to inside in sequence, the inner cylinder is internally provided with a granulation fluidization area, a reflux area is arranged between the inner cylinder and the middle cylinder, and a sludge settling area is arranged between the middle cylinder and the tank body;
the top ends of the middle cylinder and the inner cylinder are open, and the top end of the middle cylinder is higher than the top end of the inner cylinder to form a backflow water inlet;
the bottom end of the inner cylinder is open, and the bottom end of the middle cylinder is contracted inwards at a position close to the bottom end of the inner cylinder, so that a backflow water outlet slit is formed between the bottom end of the inner cylinder and the contracted inner wall of the middle cylinder and is used for forming local negative pressure and providing backflow power;
the bottom end of the contracted inner wall of the middle cylinder is provided with a mixing area with an open top end and a closed bottom end, and the backflow water outlet slit is communicated with the top end of the mixing area;
the stirring device is arranged in the inner cylinder, the top end of a stirring shaft of the stirring device extends out of the top end of the inner cylinder, penetrates through the separation region and the water collection region and extends out of the top end of the tank body, and the stirring shaft is driven to rotate by a peripheral transmission type stirring driving motor;
the peripheral transmission type stirring driving motor comprises a supporting rail, a roller driven by the stirring driving motor and capable of moving on the supporting rail is mounted on the supporting rail, the roller is mounted at one end of a traveling frame, the other end of the traveling frame is connected with a central pillar for transmission, and the central pillar drives a stirring shaft to rotate;
a water distribution device is arranged in the mixing area and is communicated with a water inlet pipe, and the water inlet pipe penetrates through the side wall of the tank body and extends out of the tank body;
a water collecting device is arranged in the water collecting area, the water collecting device is communicated with a water outlet pipe, and the water outlet pipe penetrates through the side wall of the tank body and extends out of the tank body;
the open top end of the inner cylinder is provided with an inner cylinder mud particle flow guide device which can enable mud particles flowing out of the granulation fluidization area to flow to the reflux area;
the top end of the middle cylinder is provided with an outer cylinder mud particle flow guide device, so that mud particles flowing out of the granulation fluidization area flow to the mud settling area.
The invention also has the following technical characteristics:
the top end of a first stirring shaft sleeve is fixedly connected to the inner top wall of the tank body, and the stirring shaft penetrates through the first stirring shaft sleeve and can rotate in the first stirring shaft sleeve;
the inner cylinder mud particle flow guide device comprises one ends of a plurality of first pipe bodies which are uniformly distributed along the radial direction and fixed on the side wall of the bottom of the first stirring shaft sleeve, the other end of each first pipe body is fixed on the inner cylinder, the other end of each first pipe body is open, a first inclined plate is arranged in each first pipe body, and a plurality of first through holes are formed in the bottom of each first pipe body;
the outer barrel mud particle flow guide device comprises one ends of a plurality of second pipe bodies which are uniformly distributed along the radial direction and fixed on the side wall of the bottom of the first stirring shaft sleeve, the other end of each second pipe body is fixed on the middle barrel, the other end of each second pipe body is open, a second inclined plate is arranged in each second pipe body, and a plurality of second through holes are formed in the bottom of each second pipe body.
The inner diameters of the first pipe body and the first pipe body are gradually increased from the first stirring shaft sleeve along the radial direction outwards.
A stirring shaft in a granulation fluidization area in the inner cylinder is provided with stirring blades; a mud scraping plate arranged on the inner side of the bottom of the tank body is arranged in the sludge concentration area; the bottom rotary type of (mixing) shaft install on the jar body of sludge thickening district bottom, the bottom and the mud scraper of (mixing) shaft are fixed continuous, single stirring driving motor passes through the (mixing) shaft and drives stirring vane and mud scraper simultaneously and rotate together.
A separation area of the fluidized bed main body device is internally provided with a suspension layer filtering solid-liquid separation device;
the suspension layer filtering solid-liquid separation device is divided into an upper part and a lower part, wherein the upper part is a static suspension layer, the lower part is a stirring suspension layer, an isolation screen is arranged above the static suspension layer, and the edge of the isolation screen is fixedly arranged on the inner wall of the tank body of the separation zone;
the static suspension layer and the stirring suspension layer are filled with floating light suspension beads, a stirring shaft connecting sleeve fixedly sleeved on the stirring shaft is arranged in the stirring suspension layer, the bottom end of the stirring shaft connecting sleeve is fixedly provided with a cross-shaped support frame, and a plurality of filter layer stirring blades positioned in the stirring suspension layer are uniformly and fixedly distributed on the cross-shaped support frame along the axial direction;
and a single stirring driving motor simultaneously drives the filter layer stirring blade, the stirring blade and the mud scraper to rotate together through the stirring shaft.
The tank body is connected with the middle cylinder through rib plates, and the middle cylinder is connected with the inner cylinder through rib plates.
The water distribution device comprises a water distribution cavity consisting of a pair of water distribution plates, a plurality of water distribution branch pipes are communicated with the water distribution cavity, the end parts of the water distribution branch pipes, which extend out of the water distribution plates at the top of the water distribution cavity, are closed, and a plurality of water distribution holes are uniformly formed in the side edges of the water distribution branch pipes; a second stirring shaft sleeve is arranged in the center of the water distribution plate, and the stirring shaft penetrates through the second stirring shaft sleeve and the water inlet pipe and can rotate in the second stirring shaft sleeve and the water inlet pipe; a sliding seal sleeve is arranged between the bottom of the water inlet pipe and the stirring shaft.
The sludge concentration area in be provided with the support frame, the top of support frame supports in the bottom of mixing area, the bottom mounting of support frame is on jar internal wall.
The water collecting device comprises a plurality of water collecting pipes which are communicated, the water collecting pipes are communicated with the water outlet pipe, and a plurality of water collecting holes are formed in the middle of each water collecting pipe.
The water collecting holes are obliquely arranged at an angle of 45 degrees.
Compared with the prior art, the invention has the following technical effects:
the fluidized bed equipment has the advantages that the diameter of the fluidized bed equipment is much larger than that of the conventional fluidized bed equipment, the mud particle flow guide devices are additionally arranged at the tops of the inner cylinder and the middle cylinder to prevent mud particles from depositing in a circulating granulation area, a particle circulating fluidization structure is designed between the inner cylinder and the middle cylinder, and the mud particles formed in the inner cylinder of the fluidized bed are recycled between the inner cylinder and the middle cylinder, so that suspended matters are continuously supplemented in the inner cylinder, the growth and the updating of the mud particles in the inner cylinder are ensured, and the problems that the supply of the suspended matters is insufficient and the particles in a separation area cannot grow are solved.
The diameter of the fluidized bed equipment is much larger than that of the traditional fluidized bed equipment, the perforated water distribution device is arranged on the water inlet pipe, so that water inlet of the equipment is uniform, and the holes of the water distribution device are arranged at the inclined lower part to prevent mud above the equipment from entering a pipeline. The water outlet pipe is provided with the perforated water collecting device, and water in all directions is collected through the pressure of the equipment, so that the water outlet is convenient and rapid.
(III) the peripheral transmission type driving motor not only meets the high-power requirement of stirring and mud scraping integration, but also increases the safety factor of the whole equipment. The overall height of the equipment is reduced, and the installation height of the equipment is reduced. Meanwhile, the problem of water leakage of the bottom motor is avoided, the workload of equipment installation and later maintenance is reduced, the operation is simpler and more convenient, the manufacturing cost is reduced, the energy consumption is reduced, and the method can be widely popularized and applied.
(IV) the invention has good treatment effect on various water qualities. When water with high organic particle content is treated and the density of suspended matters is low, the device mainly operates by sand adding circulation granulation, and micro sand is added to provide high-density nuclei for particles in a separation area so as to generate high-density particles; and the micro-sand is recycled by the reinforced stirring and separating action of the particle circulating slit and the side wall of the mud-water separator; when water with high content of soluble organic matters is treated, the device mainly operates by powder carbon circulation granulation, and the particle density of a suspension layer is improved by adding powder carbon with relatively high density; and the powder carbon is recycled by the reinforced stirring and separating action of the particle circulating slit and the side wall of the mud-water separator.
(V) the separation zone of the present invention may be provided with no separation apparatus or with a separation apparatus. When the separation device is installed, a vertical vortex strengthened separation device can be used, a suspension layer filtration solid-liquid separation device can also be used, different devices can be selected according to the different water quality and the requirement of effluent turbidity, and the separation device can also be selected not to be installed. The vertical vortex strengthening and separating device can generate vertical vortex, has secondary growth promotion effect on small particles entering the device, improves the yield of large particles and improves the separation efficiency. The suspended layer filtering solid-liquid separation device can effectively intercept tiny particles which cannot be removed at the bottom of the fluidized bed, so that the effluent turbidity and suspended matters are obviously reduced, and the treatment effect is more obvious.
(VI) the suspension layer filtering solid-liquid separation device can effectively intercept tiny particles which can not be removed at the bottom of the fluidized bed, so that the turbidity and suspended matters of the effluent are obviously reduced, and the treatment effect is more obvious. The present invention makes good use of the high density properties of the granules rising from the bottom granulation zone to the separation zone. The fine particles in the raw water gradually form a spherical body with larger effective density through the agglomeration and flocculation process in the granulation area. Bigger spheroid granule directly turns into the sludge concentration district behind the inner tube, and the tiny particle that the bottom can't get rid of then gets into suspension layer filtration separation district, through stirring suspension layer, tiny particle can be held back by intensive suspension layer. If particles which are not intercepted exist, the particles can be intercepted when the particles ascend and pass through the static suspension layer, and the static suspension layer ensures a certain safety height. Through holding back to little granule, static suspension layer density increases and can drop to the stirring part, because the stirring effect, the granule surface mud that drops can drop to the bottom, and suspended material can continue to rise to top suspension layer because density diminishes, guarantees that suspension layer can have certain suspension height always. The suspension layer can continuously realize the interception of small particles through the processes of continuous filtration, density increase, mud surface falling and density reduction.
Drawings
FIG. 1 is a schematic structural diagram of a peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device.
Fig. 2 is a schematic structural diagram of the middle-drum mud particle diversion device.
Fig. 3 is a schematic structural diagram of the outer sludge particle diversion device.
Fig. 4 is a schematic structural view of a perforated water distribution device.
Fig. 5 is a schematic structural view of a perforated water collecting apparatus.
FIG. 6 is a schematic structural diagram of a suspension layer filtration solid-liquid separation device.
The meaning of the individual reference symbols in the figures is: 1-a base frame, 2-a tank body, 3-a sludge concentration zone, 4-a circulating granulation zone, 5-a separation zone, 6-a water collection zone, 7-a middle cylinder, 8-an inner cylinder, 9-a granulation fluidization zone, 10-a reflux zone, 11-a sludge settling zone, 12-a reflux water inlet, 13-a contraction inner wall, 14-a reflux water outlet slit, 15-a mixing zone, 16-a water inlet pipe, 17-a water outlet pipe, 18-a stirring device, 19-a stirring shaft, 2002-a stirring driving motor, 21-a mud scraping plate, 22-a suspension layer filtration solid-liquid separation device, 23-a stirring blade, 24-a water distribution device, 25-a water collection device, 26-a support frame, 27-a mud discharge pipe, 28-an inner cylinder mud particle diversion device and 29-an outer cylinder mud particle diversion device, 30-a first stirring shaft sleeve, 31-a second stirring shaft sleeve, and 34-a ribbed plate;
2001-support rail, 2002-stirring driving motor, 2003-traveling rack, 2004-center post, 2005-roller;
2201-static suspension layer, 2202-stirring suspension layer, 2203-isolation screen, 2204-light suspension beads, 2205-stirring shaft connecting sleeve, 2206-cross supporting frame and 2207-filtering layer stirring blade;
2401-water distribution plate, 2402-water distribution cavity, 2403-water distribution branch pipe, 2404-water distribution hole and 2405-sliding seal sleeve;
2501-water collecting pipe, 2502-water collecting hole;
2801-a first tube, 2802-a first sloping plate, 2803-a first aperture;
2901-second tube 2902-second inclined plate 2903-second through hole.
The present invention will be explained in further detail with reference to examples.
Detailed Description
It is to be understood that all components and devices of the present invention, unless otherwise specified, are constructed using components known in the art.
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
the embodiment provides a peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device, which comprises a fluidized bed main body device, as shown in fig. 1 to 6, wherein the fluidized bed main body device comprises a base frame 1, a tank body 2 is fixedly arranged on the base frame 1, and the tank body 2 sequentially comprises a sludge concentration zone 3, a circulating granulation zone 4, a separation zone 5 and a water collection zone 6 from bottom to top;
a middle cylinder 7 and an inner cylinder 8 are arranged in the circulating granulation area 4, the tank body 2, the middle cylinder 7 and the inner cylinder 8 are coaxially arranged from outside to inside in sequence, a granulation fluidization area 9 is arranged in the inner cylinder 8, a reflux area 10 is arranged between the inner cylinder 8 and the middle cylinder 7, and a sludge settling area 11 is arranged between the middle cylinder 7 and the tank body 2;
the top ends of the middle cylinder 7 and the inner cylinder 8 are open, and the top end of the middle cylinder 7 is higher than the top end of the inner cylinder 8 to form a backflow water inlet 12;
the bottom end of the inner cylinder 8 is opened, and the bottom end of the middle cylinder 7 is contracted inwards at a position close to the bottom end of the inner cylinder 8, so that a backflow water outlet slit 14 is formed between the bottom end of the inner cylinder 8 and a contracted inner wall 13 of the middle cylinder 7 and is used for forming local negative pressure and providing backflow power;
the bottom end of the contraction inner wall 13 of the middle cylinder 7 is provided with a mixing area 15 with an open top end and a closed bottom end, and the backflow water outlet slit 14 is communicated with the top end of the mixing area 15;
a stirring device 18 is arranged in the inner cylinder 8, the top end of a stirring shaft 19 of the stirring device 18 extends out of the top end of the inner cylinder 8, passes through the separation region 5 and the water collection region 6 and extends out of the top end of the tank body 2, and the stirring shaft 19 is driven to rotate by a peripheral transmission type stirring driving motor 20;
the peripheral transmission type stirring driving motor 20 comprises a supporting rail 2001, wherein a roller 2005 which is driven by a stirring driving motor 2002 and can move on the supporting rail 2001 is installed on the supporting rail 2001, the roller 2005 is installed at one end of a row frame 2003, the other end of the row frame 2003 is connected with a central support 2004 for transmission, and the central support 2004 drives a stirring shaft 19 to rotate;
a water distribution device 24 is arranged in the mixing area 15, the water distribution device 24 is communicated with the water inlet pipe 16, and the water inlet pipe 16 penetrates through the side wall of the tank body 2 and extends out of the tank body 2;
a water collecting device 25 is arranged in the water collecting area 6, the water collecting device 25 is communicated with a water outlet pipe 17, and the water outlet pipe 17 penetrates through the side wall of the tank body 2 and extends out of the tank body 2;
an inner cylinder mud particle flow guide device 28 is arranged at the open top end of the inner cylinder 8, so that mud particles flowing out of the granulation fluidization area 9 can flow to the reflux area 10;
the top end of the middle cylinder 7 is provided with an outer cylinder mud particle flow guide device 29, so that mud particles flowing out of the granulation fluidization area 9 flow to the mud sedimentation area 5.
As a preferable proposal of the embodiment, the height of the tank body 2 is generally 8 to 10 m. The diameter of the tank body 2 can exceed 20m at most due to the increase of the flow to be carried and the adoption of peripheral transmission type mud scraping.
In this embodiment, the supporting rail 2001 may be fixed to the sidewall of the top of the tank 2 by a triangular supporting frame, or may be fixed in other ways as required. The traveling frame 2003 is a known stainless steel traveling frame commonly used in the art. When the peripheral transmission type stirring driving motor 20 works, the stirring driving motor 2002 is electrified to drive the roller 2005 to slide on the support rail 2001, the traveling frame 2003 is driven to rotate in the sliding process, and the traveling frame 2003 rotates to further drive the stirring shaft 19 to rotate, so that the stirring and mud scraping processes are completed.
As a specific scheme of this embodiment, a top end of a first stirring shaft sleeve 30 is fixedly connected to an inner top wall of the tank body 2, and the stirring shaft 19 passes through the first stirring shaft sleeve 30 and can rotate in the first stirring shaft sleeve 30;
the inner cylinder mud particle diversion device 28 includes one end of a plurality of first pipe bodies 2801 uniformly arranged in the radial direction fixed on the side wall of the bottom of the first stirring shaft sleeve 30, the other end of each first pipe body 2801 is fixed on the inner cylinder 8, the other end of each first pipe body 2801 is open, a first inclined plate 2802 is arranged in each first pipe body 2801, and a plurality of first through holes 2803 are formed in the bottom of each first pipe body 2801;
the outer sludge particle diversion device 29 includes one end of a plurality of second pipe bodies 2901 uniformly arranged along a radial direction fixed on a side wall of the bottom of the first stirring shaft sleeve 30, the other end of each second pipe body 2901 is fixed on the middle cylinder 7, the other end of each second pipe body 2901 is open, a second inclined plate 2902 is arranged in each second pipe body 2901, and a plurality of second through holes 2903 are formed in the bottom of each second pipe body 2901.
Preferably, the inner diameters of the first pipe body 2801 and the first pipe body 2901 gradually increase radially outward from the first stirring shaft sleeve 30. So that the muddy water can better flow from inside to outside along the pipe body.
The first perforation 2803 and the second perforation 2903 ensure that the muddy water can flow upward,
the first inclined plate 2802 and the second inclined plate 2902 can intercept mud particles to flow to the return flow zone 10 and the sludge settling zone 11.
As a preferable scheme of this embodiment, the stirring shaft 19 in the granulation fluidization region 9 in the inner cylinder 8 is provided with stirring blades 23; a mud scraping plate 21 arranged at the inner side of the bottom of the tank body 2 is arranged in the sludge concentration area 3; the bottom end of the stirring shaft 19 is rotatably installed on the tank body 2 at the bottom of the sludge concentration area 3, the bottom of the stirring shaft 19 is fixedly connected with the mud scraper 21, and the single stirring driving motor 2002 simultaneously drives the stirring blades 23 and the mud scraper 21 to rotate together through the stirring shaft 19.
As a preferable scheme of this embodiment, a suspension layer filtration solid-liquid separation device 22 is provided in the separation zone 5 of the fluidized bed main body device;
the suspension layer filtering solid-liquid separation device 22 is divided into an upper part and a lower part, wherein the upper part is a static suspension layer 2201, the lower part is a stirring suspension layer 2202, an isolation screen 2203 is arranged above the static suspension layer 2201, and the edge of the isolation screen 2203 is fixedly arranged on the inner wall of the tank body 2 of the separation zone 5;
floating light suspension beads 2204 are filled in the static suspension layer 2201 and the stirring suspension layer 2202, a stirring shaft connecting sleeve 2205 fixedly sleeved on the stirring shaft 19 is arranged in the stirring suspension layer 2202, a cross support frame 2206 is fixedly arranged at the bottom end of the stirring shaft connecting sleeve 2205, and a plurality of filter layer stirring blades 2207 positioned in the stirring suspension layer 2202 are uniformly and fixedly distributed on the cross support frame 2206 along the axial direction;
the single stirring drive motor 2002 simultaneously rotates the filter layer stirring vanes 2207, the stirring vanes 23 and the mud scraper 21 together via the stirring shaft 19.
As a preferable proposal of the embodiment, the tank body 2 and the middle cylinder 7 and the inner cylinder 8 are connected by the rib 34. As the flow to be carried is increased, the diameters of the tank body 2, the middle barrel 7 and the inner barrel 8 are increased, and the rib plates 34 can fix the tank body, the middle barrel 7 and the inner barrel together more stably.
As a specific scheme of this embodiment, the water distribution device 24 includes a water distribution chamber 2402 composed of a pair of water distribution plates 2401, the water distribution chamber 2402 is communicated with a plurality of water distribution branches 2403, the end of the water distribution branch extending out of the water distribution plate 2401 at the top of the water distribution chamber 2402 is closed, and a plurality of water distribution holes 2404 are uniformly formed on the side edge; a second stirring shaft sleeve 31 is arranged in the center of the water distribution plate 2401, and the stirring shaft 19 penetrates through the second stirring shaft sleeve 31 and the water inlet pipe 16 and can rotate in the second stirring shaft sleeve 31 and the water inlet pipe 16; a sliding sealing sleeve 2405 is arranged between the bottom of the water inlet pipe 16 and the stirring shaft 19.
Preferably, a support frame 26 is arranged in the sludge concentration zone 3, the top end of the support frame 26 is supported at the bottom of the mixing zone 15, and the bottom end of the support frame 26 is fixed on the inner wall of the tank body 2.
As a specific scheme of this embodiment, the water collecting device 25 includes a plurality of water collecting pipes 2501 communicated with each other, the water collecting pipes 2501 are communicated with the water outlet pipe 17, and a plurality of water collecting holes 2502 are formed in the middle of the water collecting pipes 2501.
Preferably, the water collecting holes 2502 are formed in an inclined manner at an angle of 45 degrees. So that the water collection is more smooth.
As a preferable scheme of the embodiment, the inner diameter of the mixing area 15 is smaller than that of the inner cylinder 8, and the bottom of the tank body 2 is provided with a conical hopper bottom.
As a preferable proposal of the embodiment, a sludge discharge pipe 27 communicated with the sludge concentration area 3 in the tank body 2 is arranged on the bottom of the tank body 2. In this embodiment, after the sludge particles in the inner cylinder 8 and the middle cylinder 7 reach the dynamic balance, a part of the sludge particles fall into the sludge settling area 11, and when the sludge in the sludge settling area 11 is accumulated to a certain height, the sludge is discharged through the sludge discharge pipe 27.
In this embodiment, the stirring blades 23 are installed at a certain distance from each other, the uppermost stirring blade 23 does not exceed the top end of the inner cylinder 8, and the lowermost stirring blade 23 is just arranged at the position of the particle circulation slit 14, so as to enhance the side wall effect and the effect of separating mud from water. As a preferable mode of the present embodiment, the stirring blade 23 may be provided by a mechanical stirring method such as a slant paddle stirring method, a propeller stirring method, or the like.
In this embodiment, the top end of the middle cylinder 7 is at a certain adjustable height from the top end of the inner cylinder 8, and the middle cylinder 7 is at a certain adjustable height from the bottom end of the separation region 5.
When the device is used, drugs such as micro-sand and/or powdered carbon and the like can be added into raw water as required, the raw water enters the tank body 2 through the water inlet pipe 16, and continuously rises under the stirring of the stirring blades 23 in the granulation fluidization region 9 of the circulating granulation region 4, the particles gradually become larger, sludge particles in the granulation fluidization region 9 of the inner cylinder 8 reach dynamic balance under the action of inlet water flow power and self gravity, part of formed sludge particles rise to the top of the inner cylinder 8 along with water flow, and before reaching the top of the middle cylinder 7, the sludge particles turn down through the inner cylinder sludge particle flow guide device 28 and enter the interlayer backflow region 10 between the inner cylinder 8 and the middle cylinder 7 to reflux and circulate and granulate.
When muddy water circularly flows back to the backflow water outlet slit 14, negative pressure is formed locally, and due to the side wall reinforced stirring effect, the micro sand and/or the powdered carbon are separated from the sludge core body, so that the micro sand and/or the powdered carbon can be recycled. The micro sand and the sludge particles flow back to the granulation fluidization area 9 in the inner cylinder 8 again, and the circulation is carried out until the height of the suspension layer reaches the top end of the middle cylinder 7, the large particles fall down through the middle cylinder sludge particle guiding device 29, and enter the sludge concentration area 3 from the sludge settling area 11 until the large particles are settled to the bottom end of the tank body 2.
After the flow is guided by the inner cylinder mud particle flow guiding device 28 and the middle cylinder mud particle flow guiding device 29, if a small amount of micro particles continuously rise to the separation area 5 along with the water flow. The particles enter the suspension layer filtration solid-liquid separation device 22 of the separation zone 5, sequentially pass through the agitation suspension layer 2204 and the static suspension layer 2203 along with water, and are stirred by the filter layer stirring blades in the agitation suspension layer 2204, so that the small particles can be intercepted by the light suspension beads 2204 in the dense agitation suspension layer 2204. If there are particles that are not trapped, the particles will be trapped by the lightweight suspension beads 2204 in the static suspension layer 2203 when rising through the static suspension layer 2203, and the static suspension layer 2203 ensures a certain safety height. By trapping small particles, the density increase of the lightweight suspended beads 2204 in the static suspended layer 2203 drops to the agitation suspended layer 2204, and due to the stirring action, the mud on the surface of the dropped lightweight suspended beads 2204 drops to the bottom and automatically drops to the sludge concentration zone 3 due to the action of gravity.
After being separated by the suspension layer filtering solid-liquid separation device 22, the water quality is changed into clear water, and the clear water is discharged from the water collecting area 6 through the water outlet pipe 17.
In the whole process, the single stirring driving motor 2002 simultaneously drives the filter layer stirring blade 2207, the stirring blade 23 and the mud scraper 21 to rotate together through the stirring shaft 19.
Claims (10)
1. A peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device comprises a circulating granulation fluidized bed main body device, wherein the fluidized bed main body device comprises a base frame (1), a tank body (2) is fixedly arranged on the base frame (1), and the tank body (2) is sequentially provided with a sludge concentration area (3), a circulating granulation area (4), a separation area (5) and a water collection area (6) from the bottom to the top;
a middle cylinder (7) and an inner cylinder (8) are arranged in the circulating granulation area (4), the tank body (2), the middle cylinder (7) and the inner cylinder (8) are coaxially arranged from outside to inside in sequence, a granulation fluidization area (9) is arranged in the inner cylinder (8), a reflux area (10) is arranged between the inner cylinder (8) and the middle cylinder (7), and a sludge settling area (11) is arranged between the middle cylinder (7) and the tank body (2);
the top ends of the middle cylinder (7) and the inner cylinder (8) are open, and the top end of the middle cylinder (7) is higher than the top end of the inner cylinder (8) to form a backflow water inlet (12);
the bottom end of the inner cylinder (8) is opened, and the bottom end of the middle cylinder (7) is contracted inwards at a position close to the bottom end of the inner cylinder (8), so that a backflow water outlet slit (14) is formed between the bottom end of the inner cylinder (8) and a contracted inner wall (13) of the middle cylinder (7) and is used for forming local negative pressure and providing backflow power;
the bottom end of the contraction inner wall (13) of the middle barrel (7) is provided with a mixing area (15) with an open top end and a closed bottom end, and the backflow water outlet slit (14) is communicated with the top end of the mixing area (15);
the method is characterized in that:
a stirring device (18) is arranged in the inner cylinder (8), the top end of a stirring shaft (19) of the stirring device (18) extends out of the top end of the inner cylinder (8), passes through the separation region (5) and the water collection region (6) and extends out of the top end of the tank body (2), and the stirring shaft (19) is driven to rotate by a peripheral transmission type stirring driving motor (20);
the peripheral transmission type stirring driving motor (20) comprises a supporting rail (2001), a roller (2005) which is driven by a stirring driving motor (2002) and can move on the supporting rail (2001) is installed on the supporting rail (2001), the roller (2005) is installed at one end of a traveling frame (2003), the other end of the traveling frame (2003) is connected with a central support column (2004) for transmission, and the central support column (2004) drives a stirring shaft (19) to rotate;
a water distribution device (24) is arranged in the mixing area (15), the water distribution device (24) is communicated with the water inlet pipe (16), and the water inlet pipe (16) penetrates through the side wall of the tank body (2) and extends out of the tank body (2);
a water collecting device (25) is arranged in the water collecting area (6), the water collecting device (25) is communicated with a water outlet pipe (17), and the water outlet pipe (17) penetrates through the side wall of the tank body (2) and extends out of the tank body (2);
the open top end of the inner cylinder (8) is provided with an inner cylinder mud particle flow guide device (28) which can enable mud particles flowing out of the granulation fluidization area (9) to flow to the reflux area (10);
the top end of the middle cylinder (7) is provided with an outer cylinder mud particle flow guide device (29) to ensure that mud particles flowing out of the granulation fluidization area (9) flow to the sludge settling area (5).
2. The peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation equipment as claimed in claim 1, wherein the top end of a first stirring shaft sleeve (30) is fixedly connected to the inner top wall of the tank body (2), and the stirring shaft (19) passes through the first stirring shaft sleeve (30) and can rotate in the first stirring shaft sleeve (30);
the inner cylinder mud particle flow guide device (28) comprises one ends of a plurality of first pipe bodies (2801) which are uniformly distributed along the radial direction and fixed on the side wall of the bottom of a first stirring shaft sleeve (30), the other end of each first pipe body (2801) is fixed on an inner cylinder (8), the other end of each first pipe body (2801) is open, a first inclined plate (2802) is arranged in each first pipe body (2801), and a plurality of first through holes (2803) are formed in the bottom of each first pipe body (2801);
the outer mud particle flow guide device (29) comprises one ends of a plurality of second pipe bodies (2901) which are uniformly distributed along the radial direction and fixed on the side wall of the bottom of the first stirring shaft sleeve (30), the other end of each second pipe body (2901) is fixed on the middle cylinder (7), the other end of each second pipe body (2901) is open, a second inclined plate (2902) is arranged in each second pipe body (2901), and a plurality of second through holes (2903) are formed in the bottom of each second pipe body (2901).
3. The peripheral driven high flow rate circulating granulation fluidized bed high speed solid-liquid separation device according to claim 2, wherein the inside diameter of the first pipe (2801) and the first pipe (2901) is gradually increased from the first stirring shaft sleeve (30) outward in the radial direction.
4. The peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation equipment according to claim 1, characterized in that a stirring shaft (19) in a granulation fluidization area (9) in the inner cylinder (8) is provided with a stirring blade (23); a mud scraping plate (21) arranged on the inner side of the bottom of the tank body (2) is arranged in the sludge concentration area (3); the bottom rotary type of (mixing) shaft (19) install on jar body (2) of sludge concentration district (3) bottom, the bottom and the mud scraper (21) of (mixing) shaft (19) are fixed continuous, single stirring driving motor (2002) pass through (mixing) shaft (19) and drive stirring vane (23) and mud scraper (21) together and rotate.
5. The peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation equipment according to claim 4, characterized in that a suspension layer filtering solid-liquid separation device (22) is arranged in the separation zone (5) of the fluidized bed main body device;
the suspension layer filtering solid-liquid separation device (22) is divided into an upper part and a lower part, the upper part is a static suspension layer (2201), the lower part is a stirring suspension layer (2202), an isolation screen (2203) is arranged above the static suspension layer (2201), and the edge of the isolation screen (2203) is fixedly arranged on the inner wall of the tank body (2) of the separation zone (5);
the static suspension layer (2201) and the stirring suspension layer (2202) are filled with floating light suspension beads (2204), a stirring shaft connecting sleeve (2205) fixedly sleeved on the stirring shaft (19) is arranged in the stirring suspension layer (2202), the bottom end of the stirring shaft connecting sleeve (2205) is fixedly provided with a cross-shaped support frame (2206), and a plurality of filter layer stirring blades (2207) positioned in the stirring suspension layer (2202) are uniformly and fixedly distributed on the cross-shaped support frame (2206) along the axial direction;
a single stirring driving motor (2002) drives the filter layer stirring blade (2207), the stirring blade (23) and the mud scraper (21) to rotate together through the stirring shaft (19).
6. Peripheral driven high flow circulating granulation fluid bed apparatus according to claim 1, characterized in that the tank (2) and the intermediate drum (7) and the inner drum (8) are connected by ribs (34).
7. The peripheral transmission type large-flow circulating granulation fluidized bed equipment according to claim 1, wherein the water distribution device (24) comprises a water distribution cavity (2402) consisting of a pair of water distribution plates (2401), the water distribution cavity (2402) is communicated with a plurality of water distribution branch pipes (2403), the end parts of the water distribution plates (2401) extending out of the top of the water distribution cavity (2402) of the water distribution branch pipes are closed, and a plurality of water distribution holes (2404) are uniformly formed in the side edges of the water distribution branch pipes; a second stirring shaft sleeve (31) is arranged in the center of the water distribution plate (2401), and a stirring shaft (19) penetrates through the second stirring shaft sleeve (31) and the water inlet pipe (16) and can rotate in the second stirring shaft sleeve (31) and the water inlet pipe (16); a sliding sealing sleeve (2405) is arranged between the bottom of the water inlet pipe (16) and the stirring shaft (19).
8. The peripheral transmission type large-flow circulating granulation fluidized bed equipment according to claim 7, wherein a support frame (26) is arranged in the sludge concentration zone (3), the top end of the support frame (26) is supported at the bottom of the mixing zone (15), and the bottom end of the support frame (26) is in close contact with the inner wall of the tank body (2) and can slide.
9. The peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device according to claim 1, wherein the water collection device (25) comprises a plurality of water collection pipes (2501) communicated with each other, the water collection pipes (2501) are communicated with the water outlet pipe (17), and a plurality of water collection holes (2502) are formed in the middle of each water collection pipe (2501).
10. The peripheral transmission type high-flow circulating granulation fluidized bed high-speed solid-liquid separation device according to claim 9, wherein the water collecting holes (2502) are formed at an angle of 45 degrees.
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| CN202011089676.4A CN112239258B (en) | 2020-10-13 | 2020-10-13 | Peripheral transmission type high-speed solid-liquid separation equipment of large-flow circulating granulation fluidized bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599865A (en) * | 2021-07-26 | 2021-11-05 | 淮北市中芬矿山机器有限责任公司 | Efficient current stabilizer with adjusting mechanism for center transmission thickener |
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