CN113798069A - Rotary part for thickener and thickener - Google Patents
Rotary part for thickener and thickener Download PDFInfo
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- CN113798069A CN113798069A CN202111098220.9A CN202111098220A CN113798069A CN 113798069 A CN113798069 A CN 113798069A CN 202111098220 A CN202111098220 A CN 202111098220A CN 113798069 A CN113798069 A CN 113798069A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
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Abstract
The invention discloses a thickener, comprising: the base, be equipped with the housing on the base, the housing includes housing and last housing down, housing and last housing form down and hold the chamber, it is equipped with rotary part to hold the intracavity, rotary part's one end is run through the housing and is connected with the main motor that sets up on the base, rotary part's the other end runs through the housing and is connected with the vice motor that sets up on the base.
Description
Technical Field
The invention relates to the field of centrifugal thickeners, in particular to a rotating part for a thickener and the thickener.
Background
In municipal sewage treatment process, municipal excess sludge needs to be concentrated before dehydration, and if no concentration process exists, the concentration of sludge entering a dewatering centrifuge can be very low, and the feeding amount of the centrifuge can be very large, so that the treatment of the dewatering centrifuge is not facilitated.
At present, the equipment adopted in the concentration process comprises a centrifugal concentrator improved by a common large-scale horizontal screw centrifugal machine, a gravity concentration tank, a belt concentrator, a drum concentrator and the like.
The centrifugal concentrator improved from a general large-scale horizontal screw centrifuge settles by the centrifugal force generated by high rotating speed. The principle is as follows: the suspension to be separated is continuously sent into the machine through a material pipe, and enters a rotary drum driven by a motor to rotate at a high speed after being accelerated by a bin of a screw conveyor, under the action of centrifugal force, the suspension forms annular liquid flow in the rotary drum, solid-phase particles with high specific gravity are deposited on the inner wall of the rotary drum to form a concentrated layer, and the screw conveyor moving relative to the rotary drum (powered by a differential and an auxiliary motor) continuously scrapes off the concentrated layer particles deposited on the inner wall of the rotary drum and pushes the concentrated layer particles to a slag discharge port at the small end of the conical section rotary drum; the liquid layer depth of the annular liquid flow can be adjusted through an overflow baffle at the large end of the rotary drum, and different separation effects of the concentrated liquid and the clear liquid are obtained. The separated clear liquid is discharged through an overflow port, the concentrated liquid is discharged from a discharge port of the conical section rotary drum, the concentrated liquid and the separated liquid are respectively collected in respective collecting bins in the casing, and finally the concentrated liquid and the separated liquid are discharged out of the machine under the action of gravity. The equipment has high automation degree and is closed.
The equipment needs large sewage treatment capacity, so the type is large, the energy consumption is large, the equipment is formed by transforming a horizontal screw centrifuge for sludge dewatering, the equipment comprises a conical section rotary drum and a straight section rotary drum, the settling length of the equipment is reduced greatly under the condition of the same length-diameter ratio, the equipment is not beneficial to clear liquid, and meanwhile, the equipment cannot run at low flow (the discharged sludge is dry and does not flow). Because the municipal sludge has high organic components and very fine sludge particles with the density close to that of water, according to the Stokes sedimentation formula, the municipal sludge is difficult to separate (under the condition of certain sedimentation length) because of sedimentation by gravity and centrifugal force, and a flocculating agent with ultrahigh molecular weight must be added to increase the particle diameter of the municipal sludge. And the price of the flocculating agent is expensive, and the treatment cost is increased by using a large amount of the flocculating agent.
The gravity concentration tank naturally settles by gravity, has the defects of large occupied area and small treatment capacity, releases odor containing nitrogen and phosphorus elements to pollute air, and is not suitable for the days of land shortage.
The belt type thickener is equipment for concentrating by utilizing filter cloth filter pressing, has the defects of small treatment capacity, large occupied area, high cost for replacing the filter cloth, and capability of releasing odor polluted air containing nitrogen and phosphorus elements.
The drum concentrator is one of the concentrating methods using a screen and gravity filtration, and has a disadvantage of low throughput.
Disclosure of Invention
The invention aims to provide a rotating component for a concentrator and the concentrator, aiming at solving the technical problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a thickener, comprising: the base, be equipped with the housing on the base, the housing includes housing and last housing down, housing and last housing form down and hold the chamber, it is equipped with rotary part to hold the intracavity, rotary part's one end is run through the housing and is connected with the main motor that sets up on the base, rotary part's the other end runs through the housing and is connected with the vice motor that sets up on the base.
In some embodiments, the rotating component comprises: the device comprises a straight-section rotary drum and a spiral conveyor, wherein an installation cavity is arranged in the straight-section rotary drum; the screw conveyor is rotatably arranged in the mounting cavity of the straight drum, and comprises: the spiral conveyor comprises a spiral conveyor main body and spiral blades arranged on the outer side of the spiral conveyor main body, wherein a discharging cavity is arranged in one end of the spiral conveyor main body, and a feeding pipe on the discharging cavity penetrates through one end part of a straight-section rotary drum; a feeding cavity is arranged between the spiral conveyor main body and the side wall of the straight rotary drum, and a spiral discharge hole communicated with the feeding cavity is formed in the side wall of the discharging cavity; the concentrated solution discharge passage that runs through the straight section rotary drum is equipped with between the other end of auger delivery main part and another tip of straight section rotary drum, concentrated solution discharge passage with the pay-off chamber is through seting up the mud discharging passage intercommunication at auger delivery main part tip, is equipped with the liquid skimming pipe on auger delivery main part lateral wall, and the clear solution water conservancy diversion chamber is formed with the lateral wall of auger delivery main part to the liquid skimming pipe, and the one end in clear solution water conservancy diversion chamber is close to the mud discharging passage setting, and the clear solution export intercommunication of seting up on the other end in clear solution water conservancy diversion chamber and a tip of straight section rotary drum.
In some embodiments, the straight-section rotary drum comprises a straight-section rotary drum body, a clear liquid end cover component and a concentrated end cover component which are arranged at two sides of the straight-section rotary drum body as end parts, the clear liquid end cover component comprises a clear liquid end cover, the middle part of the clear liquid end cover is provided with a first axial installation section, a first through cavity is arranged in the first axial installation section, a clear liquid end bearing seat is arranged on the outer wall of the first axial mounting section, the clear liquid end bearing seat is arranged on the base, a first main bearing is sleeved outside the first axial installation section and arranged in a clear liquid end bearing seat, the first axial installation section is connected with a driven belt pulley, the driven belt pulley is connected with a main motor, a feeding pipe seat is arranged on the side part of the clear liquid end bearing seat, a shielding cavity for accommodating the driven belt pulley is formed in the feeding pipe seat, and the feeding pipe is fixedly arranged on the feeding pipe seat; the spiral conveyor comprises a spiral conveyor body and is characterized in that a directional mandrel is arranged at one end of the spiral conveyor body, a balance shaft is arranged at the end of the directional mandrel, a through second cavity is axially arranged on the balance shaft, the balance shaft is rotatably connected with the second cavity through a bearing, and a feeding pipe is arranged in the first cavity and communicated with a discharging cavity.
In some embodiments, an internal spline connecting disc is connected inside the other end of the spiral conveyor main body, a spiral baffle is arranged at the end part of the other end of the spiral conveyor main body, and the spiral baffle is fixedly connected with the internal spline connecting disc; the concentrated end cover part comprises a concentrated end cover, the concentrated end cover is fixedly connected with the straight section rotary drum main body, a concentrated liquid outlet communicated with the concentrated liquid discharge channel is arranged on the concentrated end cover, a second axial installation section is arranged in the middle of the concentrated end cover, a third through cavity is arranged in the second axial installation section, a concentrated end bearing seat is arranged on the outer wall of the second axial installation section, the concentrated end bearing seat is fixedly arranged on the base, a second main bearing is sleeved outside the second axial installation section and arranged in the concentrated end bearing seat, a spline shaft is arranged in the third cavity, one end of the spline shaft is in key connection with the inner spline connection disc, and the other end of the spline shaft is connected with the differential; the auxiliary motor is connected with the differential; the second axial installation section is connected with the spiral baffle plate through a radial thrust bearing.
In some embodiments, the helical baffle comprises: the spiral baffle outer ring is annular, and a sludge discharge channel is arranged on the outer edge of the spiral baffle; the inner ring of the outer ring of the spiral baffle is provided with an installation step; the inner ring of the spiral baffle is arranged on the outer ring of the spiral baffle in a sealing manner through a mounting step; the inner ring of the spiral baffle is connected with the inner spline connecting disc; the centripetal thrust bearing is arranged on the inner ring of the spiral baffle.
In some embodiments, notches are symmetrically milled on two sides of the outer edge of the outer ring of the spiral baffle, transition blades are respectively arranged in the notches, the transition blades are obliquely arranged, one end of each transition blade is connected with the end of each notch, and the other end of each transition blade and the corresponding notch form a sludge discharge channel; and the transition blades on the upper side and the lower side are spirally arranged.
In some embodiments, the concentrate discharge passage is L-shaped, and a wear ring is arranged at a corner of the L-shaped concentrate discharge passage and is fixedly arranged on the concentrate end cover; wear-resisting pieces and wear-resisting ribs are arranged on the inner wall of the straight section rotary drum main body and close to the wear-resisting rings, and the wear-resisting ribs and the wear-resisting pieces form a convex prism-shaped structure.
In some embodiments, the spiral baffle outer ring is provided with a mud breaking scraper on the side far away from the spiral baffle inner ring.
In some embodiments, the wear rings, wear plates, and wear ribs are made of a ceramic material.
In some embodiments, a spiral sealing baffle is arranged on one side, close to the clear liquid end cover, of the spiral conveyor main body, the spiral sealing baffle is connected with the straight-section rotary drum main body in a sealing manner, a clear liquid recovery cavity independent from the feeding cavity is formed between the spiral sealing baffle and the clear liquid end cover, the other end of the clear liquid diversion cavity penetrates through the spiral sealing baffle and is communicated with the clear liquid recovery cavity, and the clear liquid recovery cavity is communicated with a clear liquid outlet formed in the clear liquid end cover; and a clear liquid outlet cavity and a concentrated liquid outlet cavity are arranged between the lower cover shell and the upper cover shell, the clear liquid outlet is communicated with the clear liquid outlet cavity, and the concentrated liquid outlet is communicated with the concentrated liquid outlet cavity.
Drawings
FIG. 1 is a schematic diagram of a thickener according to an embodiment;
fig. 2 is a schematic structural diagram of a thickener according to the present embodiment;
FIG. 3 is a schematic diagram of a thickener according to an exemplary embodiment;
FIG. 4 is a schematic diagram of a rotating component of a thickener according to an exemplary embodiment;
FIG. 5 is a schematic structural diagram of a rotating member of a thickener according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a spiral baffle of a thickener according to an embodiment;
FIG. 7 is a schematic diagram illustrating the operation of a thickener according to an embodiment;
the labels in the figure are: 1-a feed pipe, 2-a feed pipe seat, 3-a clear liquid end cover component, 4-a screw conveyor, 5-a screw discharge port, 6-a screw baffle, 7-a concentrated end cover component, 8-a spline shaft, 9-a differential mechanism, 10-a straight section rotary drum main body, 12-a driven pulley, 14-a clear liquid end bearing seat, 15-a first main bearing, 16-a first axial installation section, 17-a centripetal shaft, 18-a balance shaft, 19-a clear liquid end cover, 20-a screw conveyor main body, 21-a discharge cavity, 22-a screw seal baffle, 23-a clear liquid recovery cavity, 26-a feed cavity, 27-a screw blade, 28-a liquid skimming pipe, 29-a mud breaking scraper, 30-a concentrated end cover and 31-a screw baffle outer ring, 32-concentrated solution discharge channel, 35-concentrated end bearing seat, 36-second main bearing, 37-second axial installation section, 38-radial thrust bearing, 39-internal spline connecting disc, 40-wear ring, 41-wear resistant sheet, 42-wear resistant rib, 43-spiral baffle inner ring, 44-transition blade, 45-sludge discharge channel, 46-base, 47-lower encloser, 48-upper encloser, 49-rotating part, 50-main motor, 51-auxiliary motor, 52-clear solution discharge cavity and 53-concentrated solution discharge cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.
The rotating member for a thickener according to an embodiment of the present invention, which can be rapidly replaced, will be described in detail with reference to fig. 1 to 7. It is to be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.
In an embodiment of the present application, as shown in fig. 1-3, a concentrator may include: the motor comprises a base 46, the base 46 is provided with a cover casing, the cover casing comprises a lower cover casing 47 and an upper cover casing 48, the lower cover casing 47 and the upper cover casing 48 form a containing cavity, a rotating part 49 is arranged in the containing cavity, one end of the rotating part 49 penetrates through the cover casing to be connected with a main motor 50 arranged on the base 46, and the other end of the rotating part 49 penetrates through the cover casing to be connected with an auxiliary motor 51 arranged on the base 46. The two end faces of the upper cover shell 48 are provided with observation hole covers, the purpose of the observation hole covers is to observe the abrasion condition, the observation hole covers are connected with the upper cover shell 48 through screws, and rubber surface sealing is arranged between the observation hole covers and the upper cover shell 48. The upper cover shell 48 and the lower cover shell 47 are both made of anti-corrosion materials through welding. The lower cover 47 is welded to the base 46, and the upper cover 48 is screwed to the lower cover 47.
As shown in fig. 4-6, the rotating member 49 may include: the device comprises a straight-section rotary drum and a spiral conveyor 4, wherein an installation cavity is arranged in the straight-section rotary drum; the screw conveyor 4 is rotatably arranged in a mounting cavity of the straight-section rotary drum, and the screw conveyor 4 comprises: the spiral conveyor comprises a spiral conveyor main body 20 and spiral blades 27 arranged on the outer side of the spiral conveyor main body 20, wherein a discharging cavity 21 is arranged in one end of the spiral conveyor main body 20, and a feeding pipe 1 on the discharging cavity 21 penetrates through one end part of a straight-section rotary drum; a feeding cavity 26 is arranged between the spiral conveyor main body 20 and the side wall of the straight rotary drum, and a spiral discharging hole 5 communicated with the feeding cavity 26 is formed in the side wall of the discharging cavity 21; a concentrated solution discharge channel 32 penetrating through the straight-section rotary drum is arranged between the other end of the spiral conveyor main body 20 and the other end of the straight-section rotary drum, the concentrated solution discharge channel 32 is communicated with the feeding cavity 26 through a mud discharge channel 45 arranged at the end of the spiral conveyor main body 20, a liquid skimming pipe 28 is arranged on the outer side wall of the spiral conveyor main body 20, the liquid skimming pipe 28 and the outer side wall of the spiral conveyor main body 20 form a clear solution diversion cavity, one end of the clear solution diversion cavity is arranged close to the mud discharge channel 45, and the other end of the clear solution diversion cavity is communicated with a clear solution outlet arranged at one end of the straight-section rotary drum.
A spiral sealing baffle 22 is arranged on one side, close to a clear liquid end cover 19, of the spiral conveyor main body 20, the spiral sealing baffle 22 is in sealing connection with the straight section rotary drum main body 10, a clear liquid recovery cavity 23 which is independent of the feeding cavity 26 is formed between the spiral sealing baffle 22 and the clear liquid end cover 19, the other end of the clear liquid diversion cavity penetrates through the spiral sealing baffle 22 to be communicated with the clear liquid recovery cavity 23, and the clear liquid recovery cavity 23 is communicated with a clear liquid outlet formed in the clear liquid end cover 19; a clear liquid outlet cavity 52 and a concentrated liquid outlet cavity 53 are arranged between the lower cover shell 47 and the upper cover shell 48, the clear liquid outlet is communicated with the clear liquid outlet cavity 52, and the concentrated liquid outlet is communicated with the concentrated liquid outlet cavity 53.
The auger body 20 is centrifugally cast from duplex stainless steel, having higher strength and better stiffness (higher natural frequency). The rotation direction of the helical blade 27 and the differential rotation direction have a mutual relation, namely when the straight section rotary drum and the screw conveyor 4 are in differential motion, the helical blade 27 pushes materials towards the concentrating end. The screw conveyor body 20 is provided with a plurality of skimmer tubes 28, which are provided to open a flow path for the supernatant liquid so that the supernatant liquid flows toward the clear liquid end. The gap between the spiral sealing plate and the skimming tube 28 is fully welded, and the upper flow channel in the drum can only flow out of the skimming tube 28 into the clear liquid recovery chamber 23, as shown in fig. 7.
In some embodiments, the straight-section drum comprises a straight-section drum body 10, a clear liquid end cover part 3 and a concentrated end cover 30 part 7 which are arranged at two sides of the straight-section drum body 10 as end parts, and the straight-section drum body 10 is formed by centrifugal casting of duplex stainless steel, so that the strength is high, and materials are saved. The centrifugal concentrator is used as the most important part of the centrifugal concentrator and provides a corresponding place for separation. Clear liquid end cover part 3 includes clear liquid end cover 19, clear liquid end cover 19's middle part is equipped with first axial installation section 16, be equipped with the first cavity that runs through in the first axial installation section 16 be equipped with clear liquid end bearing frame 14 on the outer wall of first axial installation section 16, clear liquid end bearing frame 14 is installed on base 46, is equipped with first base bearing 15 at 16 overcoat of first axial installation section, first base bearing 15 sets up in clear liquid end bearing frame 14, be connected with driven pulley 12 on the first axial installation section 16, clear liquid end bearing frame 14's lateral part is equipped with feed tube seat 2, the inside chamber that shelters from that holds driven pulley 12 that forms of feed tube seat 2 shelters from, shelters from the chamber and is annular housing, and shelters from and has seted up the belt on the chamber and import and export.
The feeding pipe 1 is fixedly arranged on the feeding pipe seat 2; one end of the screw conveyor main body 20 is provided with a directional spindle 17, the end part of the directional spindle 17 is provided with a balance shaft 18, the balance shaft 18 is provided with a second through cavity along the axial direction, the balance shaft 18 and the second through cavity are rotatably connected through a bearing, and the feeding pipe 1 is arranged in the first through cavity and communicated with the discharging cavity 21. The feeding pipe 1 is a suspension liquid inlet channel and is made of an anti-corrosion material, and the feeding pipe 1 is provided with a machine-halt water return drainage device.
When the thickener provided by the invention works, suspension enters the discharge cavity 21 from the feeding pipe 1, because the discharge cavity 21 is in a state of telling rotation, the entering suspension can be thrown out to the feeding cavity 26 from the spiral discharge port 5, then under the action of centrifugal force, the suspension can be layered according to the mass, the suspension with large mass can be thrown to the inner wall of the straight drum main body 10, the suspension with small mass can be arranged close to the spiral conveyor main body 20, because the straight drum and the spiral conveyor 4 have different rotating speeds, the spiral blade 27 can drive the divided suspension to push materials to a concentration end, and then concentrated solution with large density is discharged from a concentrated solution discharge port arranged on a concentrated end cover 30 through the mud discharge passage 45 and the concentrated solution discharge passage 32. The clear liquid with low density moves from the skimming tube 28 to the clear liquid end cover 19, enters the clear liquid recovery cavity 23 and flows out from the clear liquid outlet of the clear liquid end cover 19.
In some embodiments, an internal spline connecting disc 39 is connected inside the other end of the screw conveyor main body 20, a screw baffle 6 is arranged at the end part of the other end of the screw conveyor main body 20, and the screw baffle 6 is fixedly connected with the internal spline connecting disc 39; the concentrated end cover 30 part 7 comprises a concentrated end cover 30, the concentrated end cover 30 is fixedly connected with the straight section rotary drum main body 10, a second axial installation section 37 is arranged in the middle of the concentrated end cover 30, a third through cavity is arranged in the second axial installation section 37, a concentrated end bearing seat 35 is arranged on the outer wall of the second axial installation section 37, the concentrated end bearing seat 35 is fixedly arranged on a base 46, a second main bearing 36 is sleeved outside the second axial installation section 37, the second main bearing 36 is arranged in the concentrated end bearing seat 35, a spline shaft 8 is arranged in the third through cavity, one end of the spline shaft 8 is in key connection with an internal spline connection disc 39, and the other end of the spline shaft 8 is connected with a differential 9; the connection between the second axial mounting section 37 and the helical baffle 6 is by means of a radial thrust bearing 38. The differential mechanism 9 has the function of enabling the screw conveyor 4 and the rotary drum to form a differential rotation speed, and only when the differential rotation speed is formed, the screw conveyor 4 can play a role in conveying slag and pushing materials. It may be a hydraulic differential 9, a planetary differential 9, a cycloidal-pin differential 9. The housing of which is bolted to the differential 9 attachment plate of the concentrator end piece. In this case a planetary differential 9, the belt pulley of the input shaft of the differential 9 and the driving belt pulley of the secondary motor 51 form a belt transmission.
In some embodiments, the helical baffle 6 comprises: the spiral baffle outer ring 31 is annular, and a sludge discharge channel 45 is arranged on the outer edge of the spiral baffle 6; the inner ring of the outer ring 31 of the spiral baffle is provided with a mounting step; the spiral baffle inner ring 43 is arranged on the spiral baffle outer ring 31 in a sealing mode through a mounting step; the spiral baffle inner ring 43 is connected with the inner spline connecting disc 39; the angular contact bearing 38 is mounted on the helical baffle inner ring 43. Notches which are symmetrically arranged on two sides in a milling mode are formed in the outer edge of the outer ring 31 of the spiral baffle, transition blades 44 are arranged in the notches respectively, the transition blades 44 are arranged in an inclined mode, one ends of the transition blades 44 are connected with the end portions of the notches, and mud discharge channels 45 are formed between the other ends of the transition blades 44 and the notches; and the transition blades 44 on the upper and lower sides are spirally arranged.
According to the invention, the traditional spiral baffle 6 structure is divided into the spiral baffle outer ring 31 and the spiral baffle inner ring 43, meanwhile, the transition blades 44 are arranged on the spiral baffle outer ring 31 to form the sludge discharge channel 45, so that the abrasion is mainly concentrated on the transition blades 44, and then the spiral baffle outer ring 31 can be replaced according to the maintenance time, for example, when the maintenance is carried out once a year, the transition blades 44 can be replaced, new transition blades 44 are welded again, and if the maintenance is carried out once two years, the spiral baffle outer ring 31 can be directly replaced. However, no matter which kind of the spiral baffle inner ring 43 is replaced, the spiral baffle inner ring does not need to be replaced, the spiral baffle inner ring can be replaced rapidly, the material cost is saved, the maintenance period is shortened, and the disassembly difficulty is reduced.
In some embodiments, the concentrate discharge passage 32 is L-shaped, and a wear ring 40 is disposed at a corner of the L-shaped concentrate discharge passage 32, wherein the wear ring 40 is fixed to the concentrate end cap 30; the inner wall of the straight-section drum main body 10 is provided with wear-resistant pieces 41 and wear-resistant ribs 42 close to the wear-resistant ring 40, and the wear-resistant ribs 42 and the wear-resistant pieces 41 form a convex prism-shaped structure. The wear-resistant ring 40, the wear-resistant pieces 41 and the wear-resistant ribs 42 are all made of ceramic materials.
The rotating part 49 of the present application uses ceramic wear rings 40, ceramic wear plates 41, and ceramic wear ribs 42 at the corners of the L-shaped concentrate discharge passage 32, where the concentrate discharge passage 32 is most worn. A recess is cut into the concentrator end cap 30 and a ceramic wear ring 40 is secured by screws and structural adhesive to form the same profile as the prior art centrifugal concentrator. The ceramic wear-resistant pieces 41 and the ceramic wear-resistant ribs 42 are bonded on the inner wall of the rotary drum by structural glue. At this time, the sludge discharge passage 45 is protected by the ceramic.
In some embodiments, the spiral baffle outer ring 31 is provided with a mud scraper 29 on the side away from the spiral baffle inner ring 43. The mud-breaking scraper 29 is made of tungsten carbide and has high hardness, so that harder materials deposited inside the rotary drum can be broken so as to facilitate the transition blades 44 to discharge concentrated liquid. The transition blades 44 are made of ceramic and have extremely high hardness, and the purpose of the transition blades is to play a role in loosening a sedimentary material layer and dredging a sludge discharge channel 45, so that concentrated solution is discharged more quickly.
The thickener provided by the invention is a parallel flow centrifugal thickener which has no cone section rotary drum, an ultra-long sedimentation length, an ultra-deep liquid pool (an ultra-large equivalent area) and does not use a flocculating agent.
The centrifugal hydraulic pressure difference principle (U-shaped pipe principle) is adopted, and sludge can be discharged under the condition of no conical section rotary drum. The whole drum length is a settling zone, so that the settling time is greatly increased by more than 0.5 time compared with that of a common thickener, and clear liquid is clearer.
The ultra-deep liquid pool depth enables the concentrator to have an ultra-large equivalent sedimentation area, and the treatment capacity of the equipment is increased by more than 0.5 time for centrifuges with the same model.
The concentrator runner adopts the concurrent flow formula design, compares with the concentrator of same type, has better flow layer. The lower layer of the inner wall of the rotary drum is of a downstream type, the spiral pushing direction is the same as the flow direction of the suspension, the disturbance of the spiral to the material is further reduced, and clarification is facilitated.
The benefits that may be provided by the thickeners disclosed herein include, but are not limited to:
1. the centrifugal hydraulic pressure difference principle (U-shaped pipe principle) is adopted, and sludge can be discharged under the condition of no conical section rotary drum. The whole drum length is a settling zone, so that the settling time is greatly increased by more than 0.5 time compared with that of a common thickener, and clear liquid is clearer.
2. The full-straight section conical section rotary drum is adopted, and the conical section rotary drum is omitted, so that the material types are reduced, and the material cost and the processing management cost are reduced. The parallel flow type retention is adopted, the suspension settling section is of a forward flow type, the separation effect is greatly improved, meanwhile, the super-long length-diameter ratio is adopted, so that the concentration work can be completed without using a flocculating agent (the flocculating agent is expensive) in the whole separation process, and the operation cost and the equipment cost (a flocculating agent preparation device, a pump and the like are not needed) are greatly reduced.
3. The application provides a rotary part for concentrator adopts split type spiral baffle outer ring and spiral baffle inner ring to make with spiral baffle, and sets up transition blade formation row mud passageway on the spiral baffle outer ring, when wearing and tearing need be changed, can adopt change transition blade or spiral baffle outer ring, can be rapid change, material saving cost reduces the maintenance cycle, reduces and dismantles the degree of difficulty.
4. The abrasion between the end cover and the inner wall of the rotary drum is reduced, the service lives of the two parts are prolonged, the workload of after-sale maintenance is reduced, and the cost is saved. The ceramic material has the advantages of low price, light weight, corrosion resistance, extremely high hardness (higher than that of hard alloy), easy replacement and convenient maintenance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A thickener, comprising: the base, be equipped with the housing on the base, the housing includes housing and last housing down, housing and last housing form down and hold the chamber, it is equipped with rotary part to hold the intracavity, rotary part's one end is run through the housing and is connected with the main motor that sets up on the base, rotary part's the other end runs through the housing and is connected with the vice motor that sets up on the base.
2. A thickener according to claim 1, wherein the rotary member comprises: the device comprises a straight-section rotary drum and a spiral conveyor, wherein an installation cavity is arranged in the straight-section rotary drum; the screw conveyor is rotatably arranged in the mounting cavity of the straight drum, and comprises: the spiral conveyor comprises a spiral conveyor main body and spiral blades arranged on the outer side of the spiral conveyor main body, wherein a discharging cavity is arranged in one end of the spiral conveyor main body, and a feeding pipe on the discharging cavity penetrates through one end part of a straight-section rotary drum; a feeding cavity is arranged between the spiral conveyor main body and the side wall of the straight rotary drum, and a spiral discharge hole communicated with the feeding cavity is formed in the side wall of the discharging cavity; the concentrated solution discharge passage that runs through the straight section rotary drum is equipped with between the other end of auger delivery main part and another tip of straight section rotary drum, concentrated solution discharge passage with the pay-off chamber is through seting up the mud discharging passage intercommunication at auger delivery main part tip, is equipped with the liquid skimming pipe on auger delivery main part lateral wall, and the clear solution water conservancy diversion chamber is formed with the lateral wall of auger delivery main part to the liquid skimming pipe, and the one end in clear solution water conservancy diversion chamber is close to the mud discharging passage setting, and the clear solution export intercommunication of seting up on the other end in clear solution water conservancy diversion chamber and a tip of straight section rotary drum.
3. The thickener of claim 2, wherein the straight drum comprises a straight drum body, a clear solution end cover member and a concentration end cover member disposed at two sides of the straight drum body as end portions, the clear solution end cover member comprises a clear solution end cover, a first axial mounting section is disposed at a middle portion of the clear solution end cover, a first cavity penetrating through the first axial mounting section is disposed in the first axial mounting section, a clear solution end bearing seat is disposed on an outer wall of the first axial mounting section, the clear solution end bearing seat is mounted on a base, a first main bearing is sleeved outside the first axial mounting section and disposed in the clear solution end bearing seat, a driven pulley is connected to the first axial mounting section and connected to a main motor, a feeding pipe seat is disposed at a side portion of the clear solution end bearing seat, and a shielding cavity for accommodating the driven pulley is formed inside the feeding pipe seat, the feeding pipe is fixedly arranged on the feeding pipe seat; the spiral conveyor comprises a spiral conveyor body and is characterized in that a directional mandrel is arranged at one end of the spiral conveyor body, a balance shaft is arranged at the end of the directional mandrel, a through second cavity is axially arranged on the balance shaft, the balance shaft is rotatably connected with the second cavity through a bearing, and a feeding pipe is arranged in the first cavity and communicated with a discharging cavity.
4. The thickener of claim 3, wherein the other end of the screw conveyor body is internally connected with an internal spline connecting disc, and the end part of the other end of the screw conveyor body is provided with a screw baffle which is fixedly connected with the internal spline connecting disc; the concentrated end cover part comprises a concentrated end cover, the concentrated end cover is fixedly connected with the straight section rotary drum main body, a concentrated liquid outlet communicated with the concentrated liquid discharge channel is arranged on the concentrated end cover, a second axial installation section is arranged in the middle of the concentrated end cover, a third through cavity is arranged in the second axial installation section, a concentrated end bearing seat is arranged on the outer wall of the second axial installation section, the concentrated end bearing seat is fixedly arranged on the base, a second main bearing is sleeved outside the second axial installation section and arranged in the concentrated end bearing seat, a spline shaft is arranged in the third cavity, one end of the spline shaft is in key connection with the inner spline connection disc, and the other end of the spline shaft is connected with the differential; the auxiliary motor is connected with the differential; the second axial installation section is connected with the spiral baffle plate through a radial thrust bearing.
5. A thickener according to claim 4 wherein said helical baffle comprises: the spiral baffle outer ring is annular, and a sludge discharge channel is arranged on the outer edge of the spiral baffle; the inner ring of the outer ring of the spiral baffle is provided with an installation step; the inner ring of the spiral baffle is arranged on the outer ring of the spiral baffle in a sealing manner through a mounting step; the inner ring of the spiral baffle is connected with the inner spline connecting disc; the centripetal thrust bearing is arranged on the inner ring of the spiral baffle.
6. The thickener according to claim 5, wherein notches are symmetrically milled on two sides of the outer edge of the outer ring of the spiral baffle, transition blades are respectively arranged in the notches, the transition blades are obliquely arranged, one end of each transition blade is connected with the end part of each notch, and the other end of each transition blade and the notches form a mud discharge channel; and the transition blades on the upper side and the lower side are spirally arranged.
7. A thickener according to claim 3, wherein the concentrate discharge passage is L-shaped, and wear rings are provided at corners of the L-shaped concentrate discharge passage, the wear rings being secured to the thickener end cap; wear-resisting pieces and wear-resisting ribs are arranged on the inner wall of the straight section rotary drum main body and close to the wear-resisting rings, and the wear-resisting ribs and the wear-resisting pieces form a convex prism-shaped structure.
8. The thickener of claim 7 wherein the outer spiral baffle ring is provided with a mud scraper on a side thereof remote from the inner spiral baffle ring.
9. The thickener of claim 7 wherein said wear rings, said wear plates and said wear ribs are made of a ceramic material.
10. The thickener according to claim 4, wherein a spiral sealing baffle is arranged on one side of the spiral conveyor main body close to the clear liquid end cover, the spiral sealing baffle is connected with the straight drum main body in a sealing manner, a clear liquid recovery cavity which is independent from the feeding cavity is formed between the spiral sealing baffle and the clear liquid end cover, the other end of the clear liquid diversion cavity penetrates through the spiral sealing baffle to be communicated with the clear liquid recovery cavity, and the clear liquid recovery cavity is communicated with a clear liquid outlet which is arranged on the clear liquid end cover; and a clear liquid outlet cavity and a concentrated liquid outlet cavity are arranged between the lower cover shell and the upper cover shell, the clear liquid outlet is communicated with the clear liquid outlet cavity, and the concentrated liquid outlet is communicated with the concentrated liquid outlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098220.9A CN113798069B (en) | 2021-09-18 | 2021-09-18 | Rotary part for thickener and thickener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098220.9A CN113798069B (en) | 2021-09-18 | 2021-09-18 | Rotary part for thickener and thickener |
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| CN113798069A true CN113798069A (en) | 2021-12-17 |
| CN113798069B CN113798069B (en) | 2023-04-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204601715U (en) * | 2015-03-04 | 2015-09-02 | 成都天保重型装备股份有限公司 | A kind of thickener |
| CN105130159A (en) * | 2015-09-24 | 2015-12-09 | 天圣环保工程（成都）有限公司 | Sludge thickening machine for sludge treatment |
| CN205874184U (en) * | 2016-06-30 | 2017-01-11 | 成都天翔环境股份有限公司 | A pneumatic auxiliary structure for on concentrated machine |
| CN205867674U (en) * | 2016-06-30 | 2017-01-11 | 成都天翔环境股份有限公司 | A rotary drum mud scrapping device for on concentrated machine |
| CN212916141U (en) * | 2020-07-02 | 2021-04-09 | 江苏图胜离心机制造有限公司 | Horizontal spiral discharge concentration filtration type centrifuge |
-
2021
- 2021-09-18 CN CN202111098220.9A patent/CN113798069B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204601715U (en) * | 2015-03-04 | 2015-09-02 | 成都天保重型装备股份有限公司 | A kind of thickener |
| CN105130159A (en) * | 2015-09-24 | 2015-12-09 | 天圣环保工程（成都）有限公司 | Sludge thickening machine for sludge treatment |
| CN205874184U (en) * | 2016-06-30 | 2017-01-11 | 成都天翔环境股份有限公司 | A pneumatic auxiliary structure for on concentrated machine |
| CN205867674U (en) * | 2016-06-30 | 2017-01-11 | 成都天翔环境股份有限公司 | A rotary drum mud scrapping device for on concentrated machine |
| CN212916141U (en) * | 2020-07-02 | 2021-04-09 | 江苏图胜离心机制造有限公司 | Horizontal spiral discharge concentration filtration type centrifuge |
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| Publication number | Publication date |
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| CN113798069B (en) | 2023-04-28 |
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