CN113798070A - Rotary part for thickener - Google Patents
Rotary part for thickener Download PDFInfo
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- CN113798070A CN113798070A CN202111098211.XA CN202111098211A CN113798070A CN 113798070 A CN113798070 A CN 113798070A CN 202111098211 A CN202111098211 A CN 202111098211A CN 113798070 A CN113798070 A CN 113798070A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
Abstract
The invention discloses a rotary part for a concentrator, which 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 rotationally arranged in the mounting cavity of the straight-section rotary 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 the 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; a concentrated liquid discharge passage penetrating through the straight-section rotary drum is arranged between the other end of the spiral conveyor main body and the other end of the straight-section rotary drum, the concentrated liquid discharge passage is communicated with the feeding cavity through a sludge discharge passage arranged at the end of the spiral conveyor main body, and a liquid skimming pipe is arranged on the outer side wall of the spiral conveyor main body.
Description
Technical Field
The invention relates to the field of centrifugal thickeners, in particular to a rotating part for a 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, which aims to solve the technical problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rotary member for a thickener comprising: 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 drum comprises a straight-section drum body, a clear liquid end cover component and a concentrated end cover component, wherein the clear liquid end cover component and the concentrated end cover component are arranged at two sides of the straight-section drum body as end parts, the clear liquid end cover component comprises a clear liquid end cover, a first axial installation section is arranged in the middle of the clear liquid end cover, a first penetrating 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 installation section, a first main bearing is sleeved outside the first axial installation section and is arranged in the clear liquid end bearing seat, a driven pulley is connected to the first axial installation section, a feeding pipe seat is arranged on the side part of the clear liquid end bearing seat, a shielding cavity for accommodating the driven pulley is formed inside 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 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, 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 connecting plate, and the other end of the spline shaft 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.
Drawings
FIG. 1 is a schematic diagram of a rotary member for a thickener according to an embodiment;
fig. 2 is a schematic structural diagram of a rotating member for a thickener according to the present embodiment;
FIG. 3 is a schematic structural view of a spiral baffle of a rotary member for a thickener according to the present 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-centripetal thrust bearing, 39-internal spline connecting disc, 40-wear-resistant ring, 41-wear-resistant sheet, 42-wear-resistant rib, 43-spiral baffle inner ring, 44-transition blade and 45-sludge discharge channel.
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 3. 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. 1-2, a rotary member for a thickener 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 4 main body and spiral blades 27 arranged on the outer side of the spiral conveyor 4 main body, wherein a discharging cavity 21 is arranged in one end of the spiral conveyor 4 main body, 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 main body of the spiral conveyor 4 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 passage 32 penetrating through the straight-section rotary drum is arranged between the other end of the main body of the spiral conveyor 4 and the other end of the straight-section rotary drum, the concentrated solution discharge passage 32 is communicated with the feeding cavity 26 through a mud discharge passage 45 arranged at the end of the main body of the spiral conveyor 4, a liquid skimming pipe 28 is arranged on the outer side wall of the main body of the spiral conveyor 4, the liquid skimming pipe 28 and the outer side wall of the main body of the spiral conveyor 4 form a clear solution diversion cavity, one end of the clear solution diversion cavity is arranged close to the mud discharge passage 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 the 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 and is 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.
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 rotary drum can only flow out of the skimming tube 28 and enter the clear liquid recovery cavity 23.
In some embodiments, the straight-section drum comprises a straight-section drum body 10, a clear liquid end cover component 3 and a concentrated end cover component 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 solution end cover part 3 includes clear solution end cover 19, clear solution 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 solution end bearing frame 14 on the outer wall of first axial installation section 16, be equipped with first main bearing 15 at 16 overcoat of first axial installation section, first main bearing 15 sets up in clear solution end bearing frame 14, be connected with driven pulley 12 on the first axial installation section 16, the lateral part of clear solution end bearing frame 14 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 rotating component for 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 the suspension can be layered according to the mass under the action of centrifugal force, 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 the concentration end cover 30 through the mud discharge channel 45 and the concentrated solution discharge channel 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 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, 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 connecting plate 39, and the other end of the spline shaft 8 is connected with the differential mechanism 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 gear differential 9, and a belt pulley of an input shaft of the differential 9 and a driving belt pulley of an auxiliary motor form a belt transmission.
In some embodiments, as shown in fig. 3, 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 of the application adopts a ceramic wear-resisting ring 40, a ceramic wear-resisting sheet 41 and a ceramic wear-resisting rib 42 at the most seriously worn position of the concentrated liquid discharge channel 32, namely the corner of the L-shaped concentrated liquid discharge channel 32. 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.
In some embodiments, the invention also provides a thickener comprising a rotating member for any of the above thickeners. The thickener is a parallel flow centrifugal thickener which has no cone section rotary drum, ultra-long settling length, ultra-deep liquid pool (ultra-large equivalent area) and does not use 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 rotary components for the thickener 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 (9)
1. A rotary member for a thickener, comprising: 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.
2. The rotating member for the thickener according to claim 1, wherein the straight drum comprises a straight drum body, a clear solution cover member and a thickener cover member provided at both sides of the straight drum body as end portions, 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 installation section, a first main bearing is sleeved outside the first axial installation section, the first main bearing is arranged in a clear liquid end bearing seat, the first axial installation section is connected with a driven belt pulley, 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.
3. The rotating component for the concentrator according to claim 2, 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 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, 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 connecting plate, and the other end of the spline shaft is connected with the differential; the second axial installation section is connected with the spiral baffle plate through a radial thrust bearing.
4. A rotary member for a thickener according to claim 3 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.
5. A rotating component for a thickener according to claim 4, 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 corresponding notch form a sludge discharge channel; and the transition blades on the upper side and the lower side are spirally arranged.
6. A rotary member for a thickener according to claim 2, wherein the concentrate discharge passage is L-shaped, and a wear ring is provided at a corner of the L-shaped concentrate discharge passage, the wear ring being fixedly provided on 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.
7. A rotary member for a thickener according to claim 5 wherein the outer ring of the spiral baffle is provided with a mud scraper on the side remote from the inner ring of the spiral baffle.
8. A rotary part for a thickener according to claim 6 wherein said wear rings, wear plates and wear ribs are made of a ceramic material.
9. The rotating component for the concentrating machine according to claim 2, 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 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 to be 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.
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| CN202111098211.XA CN113798070B (en) | 2021-09-18 | 2021-09-18 | Rotary part for thickener |
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| CN202111098211.XA CN113798070B (en) | 2021-09-18 | 2021-09-18 | Rotary part for thickener |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0957152A (en) * | 1995-08-21 | 1997-03-04 | Tsukishima Kikai Co Ltd | Centrifugal concentrator |
| JPH0957153A (en) * | 1995-08-21 | 1997-03-04 | Tsukishima Kikai Co Ltd | Centrifugal concentrator |
| JP2013198876A (en) * | 2012-03-26 | 2013-10-03 | Sumitomo Heavy Industries Environment Co Ltd | Sludge 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 |
| 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 |
| CN107755101A (en) * | 2017-10-13 | 2018-03-06 | 重庆江北机械有限责任公司 | A kind of sleeping spiral shell sedimentation concentration centrifuge |
-
2021
- 2021-09-18 CN CN202111098211.XA patent/CN113798070B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0957152A (en) * | 1995-08-21 | 1997-03-04 | Tsukishima Kikai Co Ltd | Centrifugal concentrator |
| JPH0957153A (en) * | 1995-08-21 | 1997-03-04 | Tsukishima Kikai Co Ltd | Centrifugal concentrator |
| JP2013198876A (en) * | 2012-03-26 | 2013-10-03 | Sumitomo Heavy Industries Environment Co Ltd | Sludge 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 |
| 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 |
| CN107755101A (en) * | 2017-10-13 | 2018-03-06 | 重庆江北机械有限责任公司 | A kind of sleeping spiral shell sedimentation concentration centrifuge |
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| CN113798070B (en) | 2023-04-28 |
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