CN113798069B - Rotary part for thickener and thickener - Google Patents
Rotary part for thickener and thickener Download PDFInfo
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- CN113798069B CN113798069B CN202111098220.9A CN202111098220A CN113798069B CN 113798069 B CN113798069 B CN 113798069B CN 202111098220 A CN202111098220 A CN 202111098220A CN 113798069 B CN113798069 B CN 113798069B
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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
Abstract
The invention discloses a thickener, comprising: the base, be equipped with the housing on the base, the housing includes lower housing and last housing, lower housing and last housing form and hold the chamber, hold the intracavity and be equipped with rotary part, rotary part's one end runs 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 concentrators, in particular to a rotary part for a concentrator and the concentrator.
Background
In municipal wastewater treatment process, concentration is needed before municipal residual sludge is dehydrated, if the concentration process is not adopted, the concentration of sludge entering a dehydration centrifuge can be very low, and the feeding amount of the centrifuge can be very large, so that the treatment of the dehydration centrifuge is not facilitated.
At present, the concentration process adopts equipment such as (1) a general large-scale horizontal decanter centrifuge improved centrifugal concentrator, (2) a gravity concentration tank, (3) a belt type concentrator, (4) a roller type concentrator and the like.
An improved centrifugal concentrator of a common large-sized horizontal decanter centrifuge is settled by centrifugal force generated by high rotating speed. The principle is as follows: the suspension to be separated is continuously sent into a machine through a material pipe, is accelerated by a material bin of a screw conveyor, enters a rotary drum driven by a motor to rotate at a high speed, forms annular liquid flow in the rotary drum under the action of centrifugal force, solid-phase particles with larger specific gravity are deposited on the inner wall of the rotary drum to form a concentrated layer, and the screw conveyor which moves relative to the rotary drum (is powered by a differential mechanism and a secondary motor) continuously scrapes and pushes the concentrated layer particles deposited on the inner wall of the rotary drum to a slag discharge port at the small end of a cone-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, so that different separation effects of concentrated liquid and clear liquid are obtained. The separated clear liquid is discharged through an overflow port, the concentrated solution is discharged through a cone section rotary drum discharge port, the concentrated solution and the separated solution are respectively collected in respective collection bins in the shell, and finally discharged outside the machine under the action of gravity. The equipment has high automation degree and is airtight.
The equipment needs to treat large amount of sewage, so the model is large, the energy consumption is large, the equipment is modified by a horizontal decanter centrifuge for sludge dewatering and comprises a conical section rotary drum and a straight section rotary drum, the sedimentation length of the equipment is reduced greatly under the condition of the same length-diameter ratio, clear liquid is not easy to clarify, and meanwhile, the equipment cannot run at low flow (dry sludge outlet and no flow). Since municipal sludge has high organic components, very fine sludge particles and density close to that of water, municipal sludge is settled by gravity and centrifugal force according to Stokes settlement formula, and is difficult to separate (under the condition of a certain settlement length), an ultra-high molecular weight flocculant must be added to increase the particle diameter of the municipal sludge. And flocculants are also expensive and use in large quantities increases the cost of the process.
The gravity concentration tank naturally settles by gravity, and has the defects of large occupied area, small treatment capacity, releasing of odor polluted air containing nitrogen and phosphorus elements, and unsuitable for the present day of land shortage.
The belt type thickener is a device for concentrating by utilizing filter cloth for filter pressing, and has the advantages of small treatment capacity, large occupied area, high cost for replacing filter cloth and releasing odor containing shouting nitrogen and phosphorus elements to pollute the air.
The drum type thickener is one type of concentration by using a screen and gravity filtration, and has a disadvantage of small throughput.
Disclosure of Invention
The invention aims to provide a rotating part for a thickener and the thickener, which aim to solve the technical problems in the background technology.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a thickener, comprising: the base, be equipped with the housing on the base, the housing includes lower housing and last housing, lower housing and last housing form and hold the chamber, hold the intracavity and be equipped with rotary part, rotary part's one end runs 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 screw conveyor, wherein a mounting cavity is arranged in the straight-section rotary drum; the screw conveyer rotates the installation intracavity that sets up at straight section rotary drum, the screw conveyer includes: the spiral conveyer comprises a spiral conveyer main body and spiral blades arranged on the outer side of the spiral conveyer main body, wherein a discharging cavity is arranged in one end of the spiral conveyer main body, and a feeding pipe on the discharging cavity penetrates through one end part of the straight rotary drum; a feeding cavity is arranged between the spiral conveyor main body and the side wall of the straight-section rotary drum, and a spiral discharging hole communicated with the feeding cavity is formed in the side wall of the discharging cavity; the concentrated solution discharging channel penetrating 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 solution discharging channel is communicated with the feeding cavity through a mud discharging channel arranged at the end of the spiral conveyor main body, a skimming pipe is arranged on the outer side wall of the spiral conveyor main body, the skimming pipe and the outer side wall of the spiral conveyor main body form a clear liquid diversion cavity, one end of the clear liquid diversion cavity is arranged close to the mud discharging channel, and the other end of the clear liquid diversion cavity is communicated with a clear liquid outlet arranged at one end of the straight section rotary drum.
In some embodiments, the straight section rotary drum comprises a straight section rotary drum body, a clear liquid end cover part and a concentrated end cover part, wherein the clear liquid end cover part and the concentrated end cover part are arranged at two sides of the straight section rotary drum body and serve as end parts, the clear liquid end cover part comprises a clear liquid end cover, a first axial installation section is arranged in the middle of the clear liquid end cover, a first cavity penetrating through the clear liquid end cover 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 arranged in the clear liquid end bearing seat, a driven pulley is connected with a main motor, a feeding pipe seat is arranged at 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 screw conveyer is characterized in that one end of the screw conveyer body is provided with a mandrel, the end part of the mandrel is provided with a balance shaft, the balance shaft is axially provided with a second cavity which penetrates through the mandrel, the balance shaft is rotationally connected with the second cavity through a bearing, and the feeding pipe is arranged in the first cavity and is communicated with the discharging cavity.
In some embodiments, the other end of the screw conveyor body is internally connected with an internal spline connecting disc, and the end of the other end of the screw conveyor body is provided with a screw baffle plate 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 a straight section rotary drum main body, a concentrated liquid outlet communicated with the concentrated liquid discharge channel is formed in the concentrated end cover, a second axial installation section is formed in the middle of the concentrated end cover, a third cavity penetrating through the concentrated end bearing seat is formed in 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 connected with an internal spline connection disc in a key manner, and the other end of the spline shaft is connected with the differential mechanism; the auxiliary motor is connected with the differential mechanism; and the second axial mounting section is connected with the spiral baffle through a radial thrust bearing.
In some embodiments, the helical baffle comprises: the outer ring of the spiral baffle is annular, and a mud discharging channel is arranged on the outer edge of the spiral baffle; an inner ring of the outer ring of the spiral baffle is provided with a mounting step; the spiral baffle inner ring is hermetically arranged on the spiral baffle outer ring through a mounting step; the inner ring of the spiral baffle is connected with the inner spline connecting disc; the radial thrust bearing is arranged on the inner ring of the spiral baffle.
In some embodiments, two symmetrically arranged notches are milled on 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 ends of the transition blades are connected with the end parts of the notches, and the other ends of the transition blades and the notches form a mud discharging channel; and the transition blades on the upper side and the lower side are spirally arranged.
In some embodiments, the concentrate discharge channel is L-shaped, and a wear-resistant ring is arranged at the corner of the L-shaped concentrate discharge channel and fixedly arranged on the concentration end cover; and the inner wall of the straight section drum body is provided with wear-resisting plates and wear-resisting ribs close to the wear-resisting ring, and the wear-resisting ribs and the wear-resisting plates form a bead-shaped structure.
In some embodiments, the helical baffle outer ring is provided with a mud-breaking scraper on a side remote from the helical baffle inner ring.
In some embodiments, the wear ring, wear pad, wear rib are all made of a ceramic material.
In some embodiments, a spiral sealing baffle is arranged on one side of the spiral conveyor main body, which is close to the clear liquid end cover, the spiral sealing baffle is in sealing connection with the straight-section rotary drum main body, a clear liquid recovery cavity which is mutually independent of 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 arranged on the clear liquid end cover; and a clear liquid outlet cavity and a concentrated liquid outlet cavity are arranged between the lower housing and the upper housing, 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 part drawing of a thickener according to the present embodiment;
fig. 2 is a schematic structural view of a thickener according to the present embodiment;
FIG. 3 is a schematic view of a thickener according to the present embodiment;
FIG. 4 is a part view of a rotary part of the thickener provided in this embodiment;
fig. 5 is a schematic structural view of a rotary member of a thickener according to the present embodiment;
FIG. 6 is a schematic view of a spiral baffle of a thickener according to the present embodiment;
fig. 7 is a schematic diagram of the working principle of a thickener according to the present embodiment;
the marks in the figure: 1-feeding pipe, 2-feeding pipe seat, 3-clear liquid end cover part, 4-spiral conveyor, 5-spiral discharge port, 6-spiral baffle, 7-concentrated end cover part, 8-spline shaft, 9-differential, 10-straight section drum body, 12-driven pulley, 14-clear liquid end bearing seat, 15-first main bearing, 16-first axial mounting section, 17-centripetal shaft, 18-balance shaft, 19-clear liquid end cover, 20-spiral conveyor body, 21-discharge cavity, 22-spiral sealing baffle, 23-clear liquid recovery cavity, 26-feeding cavity, 27-spiral blade, 28-skimming pipe, 29-mud breaking scraper, 30-concentrated end cover, 31-spiral baffle outer ring, 32-concentrated liquid discharge channel, 35-concentrated end bearing seat, 36-second main bearing, 37-second axial mounting section, 38-centripetal thrust bearing, 39-internal spline connection disc, 40-wear ring, 41-wear-resistant housing, 42-wear-resistant rib, 43-spiral baffle inner ring, 44-transition blade, 45-discharge channel, 46-motor housing, 46-48-lower housing, 48-upper housing, 48-main housing, and 53-lower housing, main housing, and rotating liquid outlet cavity, 52-concentrated liquid outlet cavity, 53-main housing, and concentrated liquid outlet cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
On the contrary, the application is intended to cover any alternatives, modifications, equivalents, and variations that may be included within the spirit and scope of the application as defined by the appended claims. Further, in the following detailed description of the present application, specific details are set forth in order to provide a more thorough understanding of the present application. The present application will be fully understood by those skilled in the art without a description of these details.
Hereinafter, a rotary member for a centrifugal concentrator according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 7. It is noted that the following examples are only for explaining the present application and are not limiting of the present application.
In an embodiment of the present application, as shown in fig. 1-3, a thickener may include: the base 46, be equipped with the housing on the base 46, the housing includes lower housing 47 and upper housing 48, lower housing 47 and upper housing 48 form the chamber that holds, hold the intracavity and be equipped with rotary part 49, rotary part 49's one end runs through the housing and is connected with the main motor 50 that sets up on the base 46, rotary part 49's the other end runs through the housing and is connected with the sub-motor 51 that sets up on the base 46. The upper casing 48 is provided with a hole cover at both end surfaces for observing wear, and the hole cover is screwed with the upper casing 48 with a rubber surface seal therebetween. The upper housing 48 and the lower housing 47 are welded by adopting anti-corrosion materials. The lower housing 47 is welded to the base 46, and the upper housing 48 is screwed to the lower housing 47.
As shown in fig. 4-6, the rotation member 49 may include: a straight-section rotary drum and a screw conveyor 4, wherein a mounting cavity is arranged in the straight-section rotary drum; the screw conveyor 4 is rotatably arranged in the mounting cavity of the straight-section rotary drum, and the screw conveyor 4 comprises: the spiral conveyer comprises a spiral conveyer main body 20 and spiral blades 27 arranged on the outer side of the spiral conveyer main body 20, wherein a discharging cavity 21 is arranged in one end of the spiral conveyer main body 20, and a feeding pipe 1 on the discharging cavity 21 penetrates through one end part of the straight rotary drum; a feeding cavity 26 is arranged between the spiral conveyor main body 20 and the side wall of the straight-section 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 concentrate discharge channel 32 penetrating 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 concentrate 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 skimming pipe 28 is arranged on the outer side wall of the spiral conveyor main body 20, a clear liquid diversion cavity is formed by the skimming pipe 28 and the outer side wall of the spiral conveyor main body 20, one end of the clear liquid diversion cavity is arranged close to the mud discharge channel 45, and the other end of the clear liquid diversion cavity is communicated with a clear liquid outlet arranged at one end of the straight-section rotary drum.
A spiral sealing baffle 22 is arranged on one side of the spiral conveyor main body 20, which is close to the clear liquid end cover 19, the spiral sealing baffle 22 is in sealing connection with the straight-section rotary drum main body 10, a clear liquid recovery cavity 23 mutually 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 guide 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 arranged on the clear liquid end cover 19; a clear liquid outlet cavity 52 and a concentrated liquid outlet cavity 53 are arranged between the lower housing 47 and the upper housing 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 of duplex stainless steel with greater strength and greater stiffness (higher natural frequency). The rotation direction of the spiral blade 27 is related to the differential rotation speed direction, namely, when the straight-section rotary drum is differential with the spiral conveyor 4, the spiral blade 27 pushes the material towards the concentration end direction. The screw conveyor body 20 is provided with a plurality of skimming tubes 28 for the purpose of opening a flow path for the supernatant liquid so that the supernatant liquid flows in the direction of the liquid end. The gap between the spiral sealing plate and the skim pipe 28 is fully welded, and the upper layer of fluid in the drum can only flow out from the skim pipe 28 into the clear fluid recovery chamber 23, as shown in fig. 7.
In some embodiments, the straight section rotary drum comprises a straight section rotary 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 rotary drum body 10 as end parts, wherein the straight section rotary drum body 10 is formed by centrifugal casting of duplex stainless steel, has high strength and saves materials. Which is the most important component of the centrifugal concentrator and provides corresponding sites for separation. The clear liquid end cover part 3 comprises a clear liquid end cover 19, a first axial installation section 16 is arranged in the middle of the clear liquid end cover 19, a first cavity penetrating through is formed in the first axial installation section 16, a clear liquid end bearing seat 14 is arranged on the outer wall of the first axial installation section 16, the clear liquid end bearing seat 14 is arranged on a base 46, a first main bearing 15 is sleeved outside the first axial installation section 16, the first main bearing 15 is arranged in the clear liquid end bearing seat 14, a driven pulley 12 is connected to the first axial installation section 16, a feeding tube seat 2 is arranged on the side portion of the clear liquid end bearing seat 14, a shielding cavity for accommodating the driven pulley 12 is formed in the feeding tube seat 2, the shielding cavity is an annular shell, and a belt inlet and a belt outlet are formed in the shielding cavity.
The feeding pipe 1 is fixedly arranged on the feeding pipe seat 2; one end of the screw conveyer main body 20 is provided with a mandrel 17, the end part of the mandrel 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 cavity are rotationally connected through a bearing, and the feeding pipe 1 is arranged in the first cavity and is communicated with the discharging cavity 21. The feeding pipe 1 is a suspension liquid inlet channel and is made of anti-corrosion materials, and a shut-down water return drainage device is arranged on the feeding pipe 1.
When the thickener provided by the invention works, suspension enters the discharge cavity 21 from the feed pipe 1, the discharge cavity 21 is in a state of telling rotation, the entered suspension is thrown out from the spiral discharge port 5 to the feed cavity 26, then the suspension is layered according to the mass under the action of centrifugal force, the suspension is thrown onto the inner wall of the straight-section rotary drum main body 10, the suspension is small in mass and is arranged close to the spiral conveyor main body 20, and the spiral blade 27 can drive the separated suspension to push the material to the concentration end due to the differential rotation speed of the straight-section rotary drum and the spiral conveyor 4, and then the concentrated solution with high density is discharged from the 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 low-density clear liquid moves from the skimming tube 28 to the direction of the clear liquid end cover 19, and always 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, the other end of the screw conveyor main body 20 is internally connected with an internal spline connection disc 39, the end of the other end of the screw conveyor main body 20 is provided with a screw baffle 6, and the screw baffle 6 is fixedly connected with the internal spline connection disc 39; the concentrating end cover 30 part 7 comprises a concentrating end cover 30, the concentrating end cover 30 is fixedly connected with the straight section drum main body 10, a second axial installation section 37 is arranged in the middle of the concentrating end cover 30, a third cavity penetrating through the second axial installation section 37 is arranged in the second axial installation section 37, a concentrating end bearing seat 35 is arranged on the outer wall of the second axial installation section 37, the concentrating 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 concentrating end bearing seat 35, a spline shaft 8 is arranged in the third cavity, one end of the spline shaft 8 is connected with an internal spline connection disc 39 in a key way, and the other end of the spline shaft 8 is connected with the differential mechanism 9; between the second axial mounting section 37 and the helical baffle 6 is connected by means of a radial thrust bearing 38. The differential mechanism 9 is used for enabling the screw conveyor 4 to form a differential rotation speed with the rotary drum, and only the differential rotation speed is formed, the screw conveyor 4 can be used for conveying slag and pushing materials. Which may be a hydraulic differential 9, a planetary gear differential 9, a cycloidal pin differential 9. The housing is connected with the differential 9 connecting disc of the concentrated end part through screws. In this case, the planetary gear differential 9, and a belt pulley of an input shaft of the differential 9 and a belt pulley driven by the auxiliary motor 51 form belt transmission.
In some embodiments, the helical baffle 6 comprises: the spiral baffle outer ring 31, the spiral baffle outer ring 31 is annular, and a mud discharging channel 45 is arranged on the outer edge of the spiral baffle 6; an installation step is arranged on the inner ring of the outer ring 31 of the spiral baffle; a spiral baffle inner ring 43, wherein the spiral baffle inner ring 43 is hermetically arranged on the spiral baffle outer ring 31 through a mounting step; the spiral baffle inner ring 43 is connected with the internal spline connecting disc 39; the radial thrust bearing 38 is mounted on a helical baffle inner ring 43. Symmetrically arranged notches are milled on two sides of the outer edge of the spiral baffle outer ring 31, transition blades 44 are respectively arranged in the notches, the transition blades 44 are obliquely arranged, one ends of the transition blades 44 are connected with the end parts of the notches, and the other ends of the transition blades 44 and the notches form a mud discharging channel 45; and the transition blades 44 on the upper and lower sides are spirally arranged.
The traditional spiral baffle 6 structure is split 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 mud discharging channel 45, so that abrasion is mainly concentrated on the transition blades 44, and secondly, the spiral baffle outer ring 31 can be replaced by different parts according to maintenance time, for example, when the spiral baffle outer ring 31 is inspected and repaired once a year, the transition blades 44 can be replaced, new transition blades 44 are welded again, and if the spiral baffle outer ring 31 is inspected and repaired once a year, the spiral baffle outer ring 31 can be directly replaced. However, no matter what kind of replacement is needed, the spiral baffle inner ring 43 does not need to be replaced, so that the replacement can be quickly performed, the material cost is saved, the maintenance period is shortened, and the disassembly difficulty is reduced.
In some embodiments, the concentrate discharge channel 32 is L-shaped, and a wear ring 40 is disposed at a corner of the L-shaped concentrate discharge channel 32, and the wear ring 40 is fixedly disposed on the concentrate end cap 30; wear-resistant plates 41 and wear-resistant ribs 42 are arranged on the inner wall of the straight-section drum body 10 near the wear-resistant ring 40, and the wear-resistant ribs 42 and the wear-resistant plates 41 form a convex-shaped structure. The wear ring 40, wear plate 41 and wear ribs 42 are all made of ceramic material.
The rotating member 49 of the present application employs the ceramic wear ring 40, the ceramic wear plate 41, and the ceramic wear ribs 42 at the most worn place of the concentrate discharge channel 32, i.e., at the corners of the L-shaped concentrate discharge channel 32. A recess is turned into the concentrator end cap 30 and a ceramic wear ring 40 is secured with screws and structural adhesive to form the same shape as the prior art centrifugal concentrator. The ceramic wear-resistant piece 41 and the ceramic wear-resistant ribs 42 are adhered to the inner wall of the rotary drum by structural adhesive. At this time, the sludge discharge passages 45 are protected by the ceramic.
In some embodiments, the helical baffle outer ring 31 is provided with a mud-breaking blade 29 on the side remote from the helical baffle inner ring 43. The mud breaking scraper 29 is made of tungsten carbide, has high hardness, and can break up the hard material deposited in the drum so as to discharge concentrated liquid from the transition blades 44. The material of the transition blade 44 is ceramic, has extremely high hardness, and has the purpose of loosening the sedimentation material layer and dredging the mud discharging channel 45 so as to discharge the concentrated solution more quickly.
The invention also provides a parallel flow centrifugal concentrator which is a cone-free rotary drum, an ultra-long sedimentation length, an 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 discharge can be performed under the condition of no cone-section rotary drum. The whole drum length is a sedimentation zone, so that the sedimentation time is greatly increased by more than 0.5 times compared with that of a common thickener, and the clear liquid is clearer.
The depth of the ultra-deep liquid pool ensures that the concentrator has an ultra-large equivalent sedimentation area and is provided with centrifuges of the same type, and the processing capacity of the equipment is increased by more than 0.5 times.
The flow channel of the concentrator adopts parallel flow type design, and has better flow layer compared with the same type of concentrator. The lower layer of the inner wall of the rotary drum is downstream, the spiral pushing direction is the same as the suspension flow direction, and the disturbance of the spiral on the materials is further reduced, so that clarification is facilitated.
Possible benefits of the concentrator disclosed herein include, but are not limited to:
1. the centrifugal hydraulic pressure difference principle (U-shaped pipe principle) is adopted, and sludge discharge can be performed under the condition of no cone-section rotary drum. The whole drum length is a sedimentation zone, so that the sedimentation time is greatly increased by more than 0.5 times compared with that of a common thickener, and the clear liquid is clearer.
2. The full straight section cone section rotary drum is adopted, the cone section rotary drum is omitted, the types of materials are reduced, and the material cost and the processing management cost are reduced. The parallel flow type is adopted to leave, the suspension sedimentation section is of a parallel flow type, the separation effect is greatly improved, meanwhile, the length-diameter ratio is extremely long, the whole separation process can finish concentration without using flocculating agent (the flocculating agent is high in price), and the running cost and the equipment cost are greatly reduced (a flocculating agent preparation device, a pump and the like are not needed).
3. The utility model provides a rotating member for concentrator adopts split type spiral baffle outer loop and spiral baffle inner ring to make with spiral baffle, and sets up transition blade formation mud passageway on spiral baffle outer loop, when wearing and tearing need change, can adopt to change transition blade or spiral baffle outer loop, can quick change, save material cost reduces maintenance cycle, reduces the dismantlement degree of difficulty.
4. The abrasion of the end cover and the inner wall of the rotary drum is slowed down, 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 cost, light weight, corrosion resistance, extremely high hardness (higher than that of hard alloy), easy replacement and convenient maintenance.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A thickener, comprising: the base is provided with a housing, the housing comprises a lower housing and an upper housing, the lower housing and the upper housing form a containing cavity, a rotating component is arranged in the containing cavity, one end of the rotating component penetrates through the housing to be connected with a main motor arranged on the base, and the other end of the rotating component penetrates through the housing to be connected with a sub-motor arranged on the base;
the rotating member includes: the device comprises a straight-section rotary drum and a screw conveyor, wherein a mounting cavity is arranged in the straight-section rotary drum; the screw conveyer rotates the installation intracavity that sets up at straight section rotary drum, the screw conveyer includes: the spiral conveyer comprises a spiral conveyer main body and spiral blades arranged on the outer side of the spiral conveyer main body, wherein a discharging cavity is arranged in one end of the spiral conveyer main body, and a feeding pipe on the discharging cavity penetrates through one end part of the straight rotary drum; a feeding cavity is arranged between the spiral conveyor main body and the side wall of the straight-section rotary drum, and a spiral discharging hole communicated with the feeding cavity is formed in the side wall of the discharging cavity; a concentrated solution discharge channel penetrating 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 solution discharge channel is communicated with the feeding cavity through a mud discharge channel arranged at the end of the spiral conveyor main body, a skimming pipe is arranged on the outer side wall of the spiral conveyor main body, a clear liquid diversion cavity is formed by the skimming pipe and the outer side wall of the spiral conveyor main body, one end of the clear liquid diversion cavity is arranged close to the mud discharge channel, and the other end of the clear liquid diversion cavity is communicated with a clear liquid outlet arranged at one end of the straight-section rotary drum;
the other end of the spiral conveyor main body is internally connected with an internal spline connecting disc, and the end part of the other end of the spiral conveyor main body is provided with a spiral baffle plate which is fixedly connected with the internal spline connecting disc;
the spiral baffle includes: the outer ring of the spiral baffle is annular, and a mud discharging channel is arranged on the outer edge of the spiral baffle; an inner ring of the outer ring of the spiral baffle is provided with a mounting step; the spiral baffle inner ring is hermetically arranged on the spiral baffle outer ring through a mounting step; the inner ring of the spiral baffle is connected with the inner spline connecting disc; the radial thrust bearing is arranged on the inner ring of the spiral baffle;
gaps which are symmetrically arranged are milled on two sides of the outer edge of the outer ring of the spiral baffle, transition blades are respectively arranged in the gaps, the transition blades are obliquely arranged, one ends of the transition blades are connected with the end parts of the gaps, and the other ends of the transition blades and the gaps form a mud discharging channel; and the transition blades on the upper side and the lower side are spirally arranged.
2. The thickener according to claim 1, wherein the straight-section rotary drum comprises a straight-section rotary drum body, a clear liquid end cover part and a concentration end cover part, wherein the clear liquid end cover part and the concentration end cover part are arranged at two sides of the straight-section rotary drum body and serve as end parts, the clear liquid end cover part comprises a clear liquid end cover, a first axial installation section is arranged in the middle of the clear liquid end cover, a first cavity penetrating through the clear liquid end cover 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 and is arranged on a base, 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 a main motor, a feeding pipe seat is arranged at 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 screw conveyer is characterized in that one end of the screw conveyer body is provided with a mandrel, the end part of the mandrel is provided with a balance shaft, the balance shaft is axially provided with a second cavity which penetrates through the mandrel, the balance shaft is rotationally connected with the second cavity through a bearing, and the feeding pipe is arranged in the first cavity and is communicated with the discharging cavity.
3. The thickener according to claim 2, wherein the thickener end cover part comprises a thickener end cover fixedly connected with the straight drum body, a thickener outlet communicated with the thickener discharge passage is arranged on the thickener end cover, a second axial installation section is arranged in the middle of the thickener end cover, a third cavity penetrating through the thickener end cover is arranged in the second axial installation section, a thickener end bearing seat is arranged on the outer wall of the second axial installation section and fixedly arranged on a base, a second main bearing is sleeved outside the second axial installation section and arranged in the thickener end bearing seat, a spline shaft is arranged in the third cavity, one end of the spline shaft is connected with an internal spline connection disc, and the other end of the spline shaft is connected with a differential mechanism; the auxiliary motor is connected with the differential mechanism; and the second axial mounting section is connected with the spiral baffle through a radial thrust bearing.
4. The 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 concentrating end cover; and the inner wall of the straight section drum body is provided with wear-resisting plates and wear-resisting ribs close to the wear-resisting ring, and the wear-resisting ribs and the wear-resisting plates form a bead-shaped structure.
5. The thickener of claim 4, wherein the outer ring of the spiral baffle is provided with a mud-breaking scraper on a side remote from the inner ring of the spiral baffle.
6. The thickener of claim 4, wherein the wear rings, wear plates, and wear ribs are each made of a ceramic material.
7. A thickener according to claim 3, wherein a spiral sealing baffle is arranged on one side of the spiral conveyor main body, which is close to the clear liquid end cover, and is in sealing connection with the straight-section rotary drum main body, a clear liquid recovery cavity which is mutually 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 which is formed in the clear liquid end cover; and a clear liquid outlet cavity and a concentrated liquid outlet cavity are arranged between the lower housing and the upper housing, 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN113798069A CN113798069A (en) | 2021-12-17 |
| CN113798069B true CN113798069B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111098220.9A Active CN113798069B (en) | 2021-09-18 | 2021-09-18 | Rotary part for thickener and thickener |
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Family Cites Families (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 |
| CN105130159B (en) * | 2015-09-24 | 2017-11-07 | 天圣环保工程（成都）有限公司 | Sludge concentrator for Treatment of Sludge industry |
| 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 |
| 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 |
| 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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Effective date of registration: 20220622 Address after: 610000 2F, building 9, No. 188, Datong Road, Qingbaijiang District, Chengdu, Sichuan Applicant after: Chengdu shenglefu Engineering Technology Co.,Ltd. Address before: 610300 Datong Industrial Zone, Qingbaijiang District, Sichuan, Chengdu Applicant before: Tiansheng Environmental Protection Engineering (Chengdu) Co.,Ltd. |
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