CN113562839B - Three-section type biological rotating disc sewage treatment device - Google Patents
Three-section type biological rotating disc sewage treatment device Download PDFInfo
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- CN113562839B CN113562839B CN202110972461.5A CN202110972461A CN113562839B CN 113562839 B CN113562839 B CN 113562839B CN 202110972461 A CN202110972461 A CN 202110972461A CN 113562839 B CN113562839 B CN 113562839B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a three-section type biological rotating disc sewage treatment device, which comprises a rotating shaft, a rotating disc and a plurality of biological contact bodies, wherein the biological contact bodies are fixed on the rotating shaft through the rotating disc; the turntable is concentrically arranged with the rotating shaft and comprises two outer turnplates and two inner turnplates, the two outer turnplates are respectively fixed at two ends of the rotating shaft, and the two inner turnplates are uniformly and detachably arranged in the middle of the rotating shaft; the biological contact bodies are arranged between the outer rotating disc and the inner rotating disc and between the two inner rotating discs, and the biological contact bodies and the rotating shaft are arranged concentrically; the rotating shaft comprises a driving shaft head, a driven shaft head and a rotating shaft main body, the rotating shaft main body is of a hollow cylindrical structure and is formed by connecting a plurality of sections of hollow cylinders end to end, the driving shaft head is fixedly connected to one end of the rotating shaft main body, and the driven shaft head is detachably connected to the other end of the rotating shaft main body; the driving shaft head and the driven shaft head are arranged concentrically with the rotating shaft main body.
Description
Technical Field
The invention belongs to the technical field of environmental protection equipment, and particularly relates to a three-section type biological rotating disc sewage treatment device.
Background
With the development of industrial industry and the improvement of national living standard, the discharge amount of domestic sewage and industrial wastewater is increased year by year, and great challenges are formed on the technical level and the treatment capacity of the existing and newly-built sewage treatment plants. The biological sewage treatment technology is an important component in the field of water treatment, and has wide application fields. The biomembrane process technology is characterized in that domesticated microorganisms are cultured to form a biomembrane, sewage flows through the biomembrane, organic matters are degraded under the biochemical action of the microorganisms, and the biomembrane process has the advantages of environmental protection and high efficiency.
The skilled in the art has made many studies on the implementation devices of the biofilm method technology, i.e. the biological rotating disc and the related equipment, in the aspect of improving the contact effect between the sewage and the biofilm, and continuously optimizes the structure of the biological rotating disc. However, in the face of increasing wastewater throughput, it is conventional practice to increase the number of bio-discs and their associated equipment, which requires a larger footprint or space, and it is another practice to continually increase the size of the bio-discs and their associated equipment, which presents challenges to the versatile performance of the equipment. However, as the size of the bio-disc and the associated equipment increases, the weight of the bio-disc increases, or the number of the bio-discs is required to increase, which has a serious challenge to the stress performance of the rotating shaft of the existing bio-disc.
In addition, in the face of the continuous improvement of the standard reaching standard of sewage treatment, the standard lifting and transformation tasks of the old sewage treatment plant are heavy, the biological rotating disc and related equipment meeting the requirements are installed on the basis of the existing site or treatment pool, a device with stronger applicability needs to be developed, and the challenge is brought to technical personnel in the field.
Disclosure of Invention
Aiming at the problems, the invention provides a three-section type biological rotating disc sewage treatment device which comprises a rotating shaft, a rotating disc and a plurality of biological contact bodies, wherein the biological contact bodies are fixed on the rotating shaft through the rotating disc;
the turntable is concentrically arranged with the rotating shaft and comprises two outer turnplates and two inner turnplates, the two outer turnplates are respectively fixed at two ends of the rotating shaft, and the two inner turnplates are uniformly and detachably arranged in the middle of the rotating shaft;
the biological contact bodies are arranged between the outer rotating disc and the inner rotating disc and between the two inner rotating discs, and the biological contact bodies and the rotating shaft are arranged concentrically;
the rotating shaft comprises a driving shaft head, a driven shaft head and a rotating shaft main body, wherein the rotating shaft main body is of a hollow cylindrical structure and is formed by connecting a plurality of sections of hollow cylinders end to end, the driving shaft head is fixedly connected to one end of the rotating shaft main body, and the driven shaft head is detachably connected to the other end of the rotating shaft main body; the driving shaft head and the driven shaft head are concentrically arranged with the rotating shaft main body.
Optionally, the outside of the front end of the hollow cylinder body is provided with an external thread, the inside of the rear end is provided with an internal thread, and the internal thread and the external thread of two adjacent hollow cylinder bodies are matched with each other, so that the two hollow cylinder bodies are connected end to end.
The rotating shaft is designed into a multi-section connection type, so that the purpose of flexibly adjusting the length of the rotating shaft is achieved, the biological contact bodies with different numbers are adapted, the number of the biological contact bodies can be increased or decreased by the three-section type biological rotating disc sewage treatment device according to different sewage treatment loads, or the three-section type biological rotating disc sewage treatment device is improved and transformed according to different sizes of sewage treatment pools according to different requirements, so that the length of the device is flexibly changed, and a simple threaded connection mode is selected, so that the rotating shaft is convenient to disassemble and assemble.
Specifically, the outer diameter of the front end of each hollow cylinder is slightly smaller than the inner diameter of the rear end of the adjacent hollow cylinder, and after the two adjacent hollow cylinders are connected back and forth, the outer diameters of the two hollow cylinders at the joint are the same, so that smooth transition of the joint is realized.
Optionally, a supporting device is arranged inside the rotating shaft main body, the supporting device includes a hollow first cylinder, a plurality of supporting blocks and a supporting rod, a plurality of through holes which are symmetrical up and down are arranged on the outer wall of the first cylinder, the supporting blocks can extend out of or retract into the first cylinder through the through holes, the supporting rod is arranged inside the first cylinder and can horizontally move in the first cylinder, and when the supporting rod moves between the two supporting blocks which are symmetrical up and down, the two supporting blocks are ejected out of the first cylinder.
Optionally, the supporting blocks are arranged on the first cylinder in pairs which are vertically symmetrical, and the horizontal distance between two adjacent pairs of supporting blocks is equal to the length of one hollow cylinder, so that each pair of supporting blocks corresponds to the joint of the adjacent hollow cylinders; the height sum of each pair of supporting blocks and the supporting rod is equal to the inner diameter of the joint of the adjacent hollow cylinder bodies, namely the inner diameter of the front end of each hollow cylinder body.
When two supporting blocks of longitudinal symmetry are pushed out of the first barrel by the supporting rod, the top of each supporting block abuts against the inner wall of the joint of the adjacent hollow barrels, and one supporting force is provided on the basis of threaded connection of the hollow barrels, so that the connection firmness of the hollow barrels is strengthened, and the strength of the rotating shaft main body is enhanced.
Optionally, the supporting block and the supporting rod are both solid, and when the supporting block extends out of the first cylinder, sufficient supporting strength is provided for the hollow cylinder of the rotating shaft main body.
Optionally, the outer diameter of the front end of the supporting rod is smaller than that of the other parts of the supporting rod, that is, the front end of the supporting rod is of an arrow structure and has an inclined slope; the supporting shoe is in the inside one end of first barrel and has the slope towards the rotation axis main part rear end, and the structural feature of above-mentioned bracing piece and supporting shoe can mutually support for a pair of supporting shoe of stacking about the front end of bracing piece easily separates.
When the hollow cylinder is used, the front end of the first cylinder is in contact with the tail part of the driving shaft head, and the position of the first cylinder is fixed through the contact of the upper and lower supporting blocks and the inner wall of the hollow cylinder; the first cylinder body and the supporting rod are equal in length, the front end of the first cylinder body is sealed, the rear end of the first cylinder body is provided with an opening, and the rear end of the first cylinder body is provided with a rear cover which can seal the rear end of the first cylinder body; the supporting rod enters the first barrel from the opening at the rear end of the first barrel, the supporting rod sequentially jacks each pair of supporting blocks and completely enters the first barrel, the rear end of the first barrel is covered by a rear cover, and the supporting rod is fixed in the first barrel; the rear cover is in contact with the front end of the driven shaft head, and the position of the first cylinder in the rotating shaft main body is fixed.
In order to enhance the connection strength and the overall strength of the hollow rotating shaft main bodies connected in a sectional mode, the supporting device is designed, the length of the supporting device is adapted to the length of the rotating shaft main bodies and is arranged in the rotating shaft main bodies, the supporting blocks extend out of or retract into the first cylinder bodies under the action of the supporting rods, the positions of the supporting blocks correspond to the connection positions of the two hollow cylinder bodies of the rotating shaft main bodies, the positions are the weakest positions of the rotating shaft main bodies, short plates with insufficient structural strength of the detachable hollow rotating shaft main bodies can be obviously supplemented due to the arrangement of the supporting blocks, the connection strength and the overall strength of the rotating shaft main bodies are greatly improved, the supporting device is ingenious in structural design, and the supporting device can be operated through mechanical action and is simple and convenient to use.
Optionally, a connecting disc is arranged on the outer side of the rotating shaft, and the connecting disc and the rotating shaft are arranged concentrically; the connecting discs comprise two outer disc connecting discs and two inner disc connecting discs, the positions of the two outer disc connecting discs respectively correspond to the two outer rotating discs, and the positions of the two inner disc connecting discs respectively correspond to the two inner rotating discs.
Optionally, the connecting disc and the rotary disc at the corresponding position are positioned by adopting a spigot and are fixedly connected through a hinged hole bolt.
Further optionally, two ends of the rotating shaft main body are respectively provided with an outer disc connecting disc, and the outer disc connecting discs are sleeved on the outer side of the rotating shaft main body and are connected in a welding mode and used for being connected with the outer rotating disc.
Further optionally, the inner disc connecting disc is sleeved on the outer side of the middle part of the rotating shaft main body; the two inner disc connecting discs divide the main body part of the rotating shaft between the two outer disc connecting discs into three sections and are used for connecting the inner discs.
Optionally, the outer surface of the hollow cylinder body is provided with a circle of sunken clamping grooves for installing and fixing the inner disc connecting discs, the inner disc connecting discs are of a hoop structure, when the length of the rotating shaft main body is adjusted, the positions of the inner disc connecting discs are correspondingly changed, the two inner disc connecting discs are always kept to equally divide the rotating shaft main body part between the two outer disc connecting discs into three sections, and after the positions of the inner disc connecting discs are determined, the inner disc connecting discs are fastened in the clamping grooves of the hollow cylinder body closest to the positions.
Optionally, the driving shaft head is fixedly connected with the front end of the rotating shaft main body through the first connecting portion, and the driven shaft head is detachably connected with the rear end of the rotating shaft main body through the second connecting portion.
Further optionally, the first connecting portion comprises a first supporting ring, a plurality of first reinforcing ribs and a second supporting ring, the first supporting ring and the second supporting ring are sequentially sleeved on the outer side of the driving shaft head, and the first reinforcing ribs are arranged between the first supporting ring and the second supporting ring and are uniformly distributed along the circumferential direction of the driving shaft head.
Further optionally, the second connecting portion comprise a third support ring, a plurality of second reinforcing ribs and a fourth support ring, the third support ring and the fourth support ring are sequentially sleeved on the outer side of the driven shaft head, and the second reinforcing ribs are arranged between the third support ring and the fourth support ring and are uniformly distributed along the circumferential direction of the driven shaft head.
Optionally, a plurality of welding holes are formed in the side wall of the front end of the rotating shaft main body, and are used for welding and connecting the first support ring and the second support ring with the inner wall of the rotating shaft main body; be equipped with a plurality of bolt hole on the lateral wall of the rear end of axis of rotation main part, be used for with third support ring and fourth support ring with the inner wall of axis of rotation main part passes through the bolt and can dismantle the connection.
Optionally, the three-section type biological rotating disc sewage treatment device further comprises a connecting and fixing assembly, the connecting and fixing assembly comprises a reinforcing rib welding piece and a supporting shaft, the reinforcing rib welding piece comprises an outer reinforcing rib welding piece and an inner reinforcing rib welding piece, the inner reinforcing rib welding piece is connected between the two inner rotating discs, and the outer reinforcing rib welding piece is connected between the inner rotating discs and the outer rotating discs;
the back shaft includes outer support shaft and interior support shaft, interior support shaft connection is between two inner turnplates to run through the biological contact body between two inner turnplates in proper order, outer support shaft connects between inner turnplate and outer turnplate, and runs through the biological contact body between inner turnplate and the outer turnplate in proper order.
Optionally, the carousel is equipped with the bellying of a plurality of outside protrusion along circumference, the bellying that corresponds of the adjacent carousel of both ends difference fixed connection of strengthening rib seam piece.
Further optionally, an outer reinforcing rib welding piece is connected between the protruding portions of the corresponding positions of the outer rotating disc and the inner rotating disc, the outer reinforcing rib welding piece is of a rod-shaped structure, one end of the outer reinforcing rib welding piece is connected with the protruding portion of the outer rotating disc, and the other end of the outer reinforcing rib welding piece is connected with the protruding portion of the inner rotating disc.
Further optionally, an inner reinforcing rib welding piece is connected between the protruding parts of the corresponding positions of the two inner rotary discs, the inner reinforcing rib welding piece is of a rod-shaped structure, one end of the inner reinforcing rib welding piece is connected with the protruding part of each inner rotary disc, and the other end of the inner reinforcing rib welding piece is connected with the protruding part of each adjacent inner rotary disc.
Optionally, the biological contact body includes six fan-shaped dictyosome to arrange in proper order and constitute circularly, the dictyosome is equipped with six mounting holes the periphery of mounting hole forms the featheredge through the hot pressing, and the thickness of featheredge is less than the thickness in other regions of dictyosome.
Optionally, a plurality of connection pipe fitting has been cup jointed in the outside of back shaft, connect the end to end connection each other of pipe fitting, the back shaft runs through the cavity pipeline at a plurality of connection pipe fitting middle part, the position of end to end connection is in the position of the mounting hole of dictyosome.
Optionally, the connecting pipe sequentially comprises an external thread connecting end, a hollow pipe and an internal thread connecting end, a first pressure plate is arranged between the external thread connecting end and the hollow pipe, a second pressure plate is arranged between the hollow pipe and the internal thread connecting end, and the external thread connecting end, the internal thread connecting end, the first pressure plate and the second pressure plate are all arranged concentrically with the hollow pipe; the hollow pipe, the external thread connecting end and the internal thread connecting end are all hollow, and form a hollow pipeline; the first pressure plate and the second pressure plate are arranged outside the hollow pipeline.
Optionally, outer carousel and inner dial are circular, and the position that corresponds the mounting hole of biological contact body is equipped with the through hole, the through hole is used for the back shaft to run through the carousel, and so far, the fixed back shaft of carousel, back shaft support biological contact body accomplish the fixed of biological contact body.
Optionally, the outer support shaft sequentially penetrates through the outer rotating disc, the biological contact body and the inner rotating disc at corresponding positions of the through hole and the mounting hole; the inner supporting shaft is arranged at the corresponding position of the through hole and the mounting hole and sequentially penetrates through the inner rotating disc, the biological contact body and the other inner rotating disc.
The three-section type biological rotating disc sewage treatment device has the following beneficial effects:
(1) Compared with the existing three turntables, the four turntables are far away from the maximum bending moment, so that the stress condition of the rotating shaft is improved; the invention cancels the reinforcing rib at the joint of the rotating disc and the rotating shaft in the prior art, the rotating disc is directly connected with the rotating shaft, the welding stress is greatly reduced, and the stress removing process of the heat treatment after welding is added, so that the welding stress is almost close to zero;
(2) The invention adopts the design that the driving shaft head, the driven shaft head and the rotating shaft main body are matched, so that the auxiliary shaft (namely the rotating shaft main body) for fixing the biological contact body is shortened, the rigidity is enhanced, the swinging amount of the biological contact body in the operation process is reduced, the load alternation amplitude is reduced, and the safety and the service life are enhanced;
(3) The main body of the rotating shaft is of a mesoporous structure, so that the weight of the rotating shaft is reduced; meanwhile, the main body of the rotating shaft is formed by connecting a plurality of sections of hollow cylinders end to end, so that the purpose of adjusting the length of the rotating shaft is realized, the rotating shaft is suitable for biological contact bodies with different quantities or different sizes of sewage treatment tanks needing upgrading and reconstruction, and the rotating shaft is more flexible to apply;
(4) The supporting device is used for enhancing the connection strength and the overall strength of the hollow rotating shaft main bodies connected in a sectional mode, the supporting blocks correspond to the connection positions of the two hollow cylinders of the rotating shaft main bodies, the positions are the weakest positions of the rotating shaft main bodies, and the supporting blocks can obviously supplement short plates with insufficient structural strength of the detachable hollow rotating shaft main bodies;
(5) The connecting disc on the rotating shaft main body is connected with the turntable through the spigot positioning and the reamed hole bolt connection mode, so that the connection is stable and reliable, the welding area of the connecting disc and the turntable is reduced, and no additional stress is generated; meanwhile, when the turntable is not connected, the space size of the rotating shaft is smaller, the stress relief heat treatment can be easily realized, the possibility of generating cold cracks and delayed cracks is almost reduced to zero, and the mechanical comprehensive performance of the turntable is improved;
(6) Utilize strengthening rib seam piece and back shaft are connected carousel and biological contact body, have improved biological contact body's firm in connection nature.
Drawings
Fig. 1 is a structural view of a hollow cylinder.
Fig. 2 is a structural view of the rotating shaft, the turntable and the supporting device.
Fig. 3 is an enlarged view of a portion of fig. 2.
Fig. 4 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 2.
Fig. 5 is a sectional view of the rotating shaft.
Fig. 6 is a side view of the rotating shaft.
FIG. 7 is a structural diagram of the three-stage biological rotating disk sewage treatment device.
Fig. 8 is a sectional view of B-B in fig. 7.
Fig. 9 is a cross-sectional view of C-C in fig. 7.
Fig. 10 is an enlarged view of I in fig. 7.
Fig. 11 is an enlarged view of II in fig. 7.
In the drawing, 1-rotating shaft, 2-rotating disc, 201-outer rotating disc, 202-inner rotating disc, 203-through hole, 3-reinforcing rib welding part, 301-outer reinforcing rib welding part, 302-inner reinforcing rib welding part, 4-hinged hole bolt, 5-outer disc connecting disc, 6-inner disc connecting disc, 7-bulge part, 8-lightening hole, 9-driving shaft head, 10-driven shaft head, 11-rotating shaft body, 1101-hollow cylinder, 12-first connecting part, 1201-first supporting ring, 1202-second supporting ring, 1203-first reinforcing rib, 13-second connecting part, 1301-third supporting ring, 1302-fourth supporting ring, 1303-second reinforcing rib, 14-welding hole, 15-biological contact body, 16-supporting shaft, 1601-outer supporting shaft, 1601-inner supporting shaft, 17-mounting hole, 18-thin edge, 19-connecting pipe, 20-outer thread connecting end, 21-hollow pipe, 22-inner thread connecting end, 23-first supporting disc, 24-second supporting disc, 25-pressing disc groove, 26-rubber washer, 27-28027-supporting disc, 29-supporting sleeve, 29-first supporting block, 1302-first supporting ring, 29-second supporting ring, and 29-third supporting ring.
Detailed Description
The three-section biological rotating disc sewage treatment device comprises a rotating shaft 1, a rotating disc 2 and a plurality of biological contact bodies 15, wherein the biological contact bodies 15 are fixed on the rotating shaft 1 through the rotating disc 2;
the turntable 2 is arranged concentrically with the rotating shaft 1, the turntable 2 comprises two outer turntables 201 and two inner turntables 202, the two outer turntables 201 are respectively fixed at two ends of the rotating shaft 1, and the two inner turntables 202 are uniformly and detachably arranged in the middle of the rotating shaft 1;
the biological contact body 15 is arranged between the outer rotating disc 201 and the inner rotating disc 202 and between the two inner rotating discs 202, and the biological contact body 15 is arranged concentrically with the rotating shaft 1;
the rotating shaft 1 comprises a driving shaft head 9, a driven shaft head 10 and a rotating shaft main body 11, wherein the rotating shaft main body 11 is of a hollow cylindrical structure and is formed by connecting a plurality of sections of hollow cylinders 1101 end to end, the driving shaft head 9 is fixedly connected to one end of the rotating shaft main body 11, and the driven shaft head 10 is detachably connected to the other end of the rotating shaft main body 11; the driving stub shaft 9 and the driven stub shaft 10 are concentrically disposed with the rotation shaft body 11.
The rotating shaft main body 11 is of a hollow barrel structure, so that the overall weight of the three-section type biological rotating disc sewage treatment device can be obviously reduced, and the weight load is reduced.
As shown in fig. 1, optionally, an external thread is disposed on the outer side of the front end of the hollow cylinder 1101, an internal thread is disposed on the inner side of the rear end, and the internal thread and the external thread of two adjacent hollow cylinders 1101 are matched, so that the two hollow cylinders are connected end to end.
Specifically, the outer diameter of the front end of the hollow cylinder 1101 is slightly smaller than the inner diameter of the rear end of the adjacent hollow cylinder, and after the two adjacent hollow cylinders are connected front and back, the outer diameters of the two hollow cylinders at the joint are the same, so that smooth transition of the joint is realized.
Optionally, as shown in fig. 2 to 3, a supporting device 28 is disposed inside the rotating shaft body 11, the supporting device 28 includes a hollow first cylinder 2801, a plurality of supporting blocks 2802, and a supporting rod 2803, a plurality of through holes which are symmetrical up and down are disposed on an outer wall of the first cylinder 2801, the supporting blocks 2802 can extend out of or retract into the first cylinder 2801 through the through holes, the supporting rod 2803 is disposed inside the first cylinder 2801 and can horizontally move inside the first cylinder, and when the supporting rod 2803 moves between two supporting blocks 2802 which are symmetrical up and down, the two supporting blocks are ejected out of the first cylinder.
Optionally, the supporting blocks 2802 are arranged in pairs on the first cylinder 2801, and the horizontal distance between two adjacent pairs of supporting blocks 2802 is equal to the length of one hollow cylinder 1101, so that each pair of supporting blocks 2802 corresponds to the joint of the adjacent hollow cylinders 1101; the sum of the heights of each pair of support blocks 2802 and support rods 2803 is equal to the inner diameter of the joint of the adjacent hollow cylinder 1101, i.e., the inner diameter of the front end of the hollow cylinder 1101.
When the two support blocks 2802 which are symmetrical up and down are ejected out of the first cylinder 2801 by the support rod 2803, the tops of the support blocks 2802 abut against the inner wall of the joint of the adjacent hollow cylinders, and a supporting force is provided on the basis of the threaded connection of the hollow cylinders, so that the connection firmness of the hollow cylinders 1101 is enhanced, and the strength of the rotating shaft main body 11 is enhanced.
Alternatively, the support block 2802 and the support rod 2803 are both solid to provide sufficient support strength for the hollow cylinder 1101 of the main body 11 of the rotating shaft when the support block 2802 extends out of the first cylinder 2801.
Optionally, the outer diameter of the front end of the supporting rod 2803 is smaller than the rest of the supporting rod, that is, the front end of the supporting rod has an arrow structure and has an inclined slope; the supporting block 2802 has an inclined slope toward the rear end of the rotating shaft body 11 at an end thereof located inside the first cylinder, and the supporting bar 2803 and the supporting block 2802 are configured to be capable of cooperating with each other, so that the front end of the supporting bar 2803 can be easily separated into a pair of supporting blocks 2802 stacked up and down.
Optionally, a plurality of rings of support ring bodies are arranged outside the first cylinder 2801, and the outer edge of each support ring body contacts with the inner wall of the rotating shaft main body, so as to support and fix the first cylinder 2801 inside the rotating shaft main body.
When the device is manufactured, the lengths of the first cylinder 2801 and the support rod 2803 can be adjusted according to the length of the rotating shaft body 11, and when the device is used, the front end of the first cylinder 2801 is in contact with the tail part of the driving shaft head 9, and the position of the first cylinder 2801 is fixed through the contact between the upper and lower support blocks 2802 and the inner wall of the hollow cylinder 1101; the first cylinder 2801 and the support bar 2803 are equal in length, the front end of the first cylinder 2801 is sealed, the rear end of the first cylinder 2801 is provided with an opening, and the rear end of the first cylinder 2801 is provided with a rear cover capable of sealing the rear end of the first cylinder 2801; the supporting rod 2803 enters the first cylinder from the rear end opening of the first cylinder 2801, the supporting rod 2803 sequentially pushes each pair of supporting blocks 2802 open and completely enters the first cylinder, the rear end of the first cylinder is covered by a rear cover, and the supporting rod 2803 is fixed inside the first cylinder; the rear cover contacts the front end of the driven stub shaft 10, fixing the position of the first cylinder 2801 in the rotating shaft body 11.
Optionally, the three-stage biological rotating disc sewage treatment plant further comprises a connecting and fixing component, the connecting and fixing component comprises a reinforcing rib welding part 3 and a support shaft 16, the reinforcing rib welding part 3 comprises an outer reinforcing rib welding part 301 and an inner reinforcing rib welding part 302, the inner reinforcing rib welding part 302 is connected between the two inner rotating discs 202, and the outer reinforcing rib welding part 301 is connected between the inner rotating discs 202 and the outer rotating disc 201;
Optionally, a connecting disc is arranged on the outer side of the rotating shaft 1, and the connecting disc and the rotating shaft 1 are arranged concentrically; the connecting discs comprise two outer disc connecting discs 5 and two inner disc connecting discs 6, the positions of the two outer disc connecting discs 5 correspond to the two outer discs 201 respectively, and the positions of the two inner disc connecting discs 6 correspond to the two inner discs 202 respectively.
Optionally, the connecting discs at the corresponding positions and the turntables 2 are positioned by using rabbets and are fixedly connected by using the hinge hole bolts 4, that is, the two outer disc connecting discs 5 respectively correspond to the two outer turntables 201 and are connected by using the rabbets and the hinge hole bolts; the two inner disk connecting disks 6 respectively correspond to the two inner disks 202, and are in spigot positioning and reamed hole bolt connection.
Further optionally, two ends of the rotating shaft main body 11 are respectively provided with an outer disc connecting disc 5, and the outer disc connecting discs 5 are sleeved outside the rotating shaft main body 11 and are connected by welding to connect with the outer disc 201.
Further optionally, the inner disc connecting disc 6 is sleeved outside the middle part of the rotating shaft main body 11; the two inner disk connecting disks 6 divide the rotating shaft main body 11 portion between the two outer disk connecting disks 5 equally into three sections for connecting the inner disk 202.
Optionally, the outer surface of the hollow cylinder 1101 is provided with a circle of sunken clamping grooves for installing and fixing the inner disc connecting discs 6, the inner disc connecting discs 6 are of a hoop structure, when the length of the rotating shaft main body 11 is adjusted, the positions of the inner disc connecting discs 6 are correspondingly changed, the two inner disc connecting discs 6 are always kept to equally divide the rotating shaft main body part between the two outer disc connecting discs 5 into three sections, and after the positions of the inner disc connecting discs 6 are determined, the inner disc connecting discs 6 are fastened in the clamping grooves of the hollow cylinder closest to the positions.
The method comprises the following steps that (1) each connecting disc and a rotary disc (2) are positioned by using a tool to perform spigot positioning, after the relative position distance of the four connecting discs to a rotating shaft (1) and the concentricity of the connecting discs are ensured, four rotary discs (2) are respectively installed on the corresponding connecting discs by a reaming bolt pair (4), then reinforcing rib welding pieces (3) are installed, an outer disc connecting disc (5) is symmetrically welded by a welding robot at the same time, and the distance and the concentricity between the rotary discs are ensured; the axis of rotation 1 that will weld the completion, carry out thermal treatment destressing back, carry out the secondary finish machining to the initiative spindle nose 9 and the driven spindle nose 10 at both ends, guarantee the required precision of both ends spindle nose. And all assembly parts of the three-section type biological rotating disc sewage treatment device are subjected to heavy anti-corrosion treatment, so that good anti-corrosion performance is ensured.
Optionally, as shown in fig. 4, the turntable 2 is provided with a plurality of protrusions 7 protruding outward along the circumferential direction, and two ends of the reinforcing rib welding part 3 are respectively and fixedly connected to the corresponding protrusions 7 of the adjacent turntable 2.
In one embodiment of the invention, the turntable 2 is uniformly provided with six protrusions 7 along the circumferential direction, the included angle between two adjacent protrusions 7 is 60 degrees, and the end part of the reinforcing rib welding piece 3 is connected with the protrusions 7 by using a bolt pair; carousel 2 forms sunk structure between two adjacent bellying 7 for carousel 2 lightens the quality under the prerequisite of guaranteeing the performance, reduces carousel 2's moment of inertia, improves the atress operating mode.
Further optionally, an outer reinforcement welding piece 301 is connected between the outer turnplate 201 and the protruding portion 7 of the corresponding position of the inner turnplate 202 by using a bolt pair, the outer reinforcement welding piece 301 is a rod-shaped structure, one end of the outer reinforcement welding piece is connected with the protruding portion of the outer turnplate 201, and the other end of the outer reinforcement welding piece is connected with the protruding portion of the inner turnplate 202.
Further optionally, a bolt pair is used to connect the inner reinforcing rib welding part 302 between the protruding parts 7 of the two corresponding positions of the inner rotary disk 202, the inner reinforcing rib welding part 302 is a rod-shaped structure, one end of the inner reinforcing rib welding part is connected with the protruding part of the inner rotary disk 202, and the other end of the inner reinforcing rib welding part is connected with the protruding part of the adjacent inner rotary disk 202.
In one embodiment of the present invention, six protrusions 7 are uniformly arranged on both the outer dial 201 and the inner dial 202 along the circumferential direction, and an included angle between two adjacent protrusions 7 on the same dial is 60 degrees; the outer reinforcing rib welding piece 301 is connected between the convex parts 7 at the corresponding positions of the outer turnplate 201 and the inner turnplate 202 by bolts, namely six outer reinforcing rib welding pieces 301 are connected between the outer turnplate 201 and the inner turnplate 202; the inner reinforcing rib welding parts 302 are connected between the convex parts 7 at the corresponding positions of the two inner rotary discs 202 by bolts, namely, six inner reinforcing rib welding parts 302 are connected between the two inner rotary discs 202; that is, the side of the protruding portion of the inner dial 202 facing the adjacent outer dial 201 is connected to the outer rib weldment 301, and the side facing the adjacent inner dial 202 is connected to the inner rib weldment 302.
Optionally, a plurality of lightening holes 8 are formed in the turntable 2, the lightening holes 8 are uniformly distributed along the circumferential direction of the turntable 2 and are concentrically arranged with the turntable 2, so that the weight of the turntable 2 is further reduced, the inertia moment of the turntable 2 is reduced, the stress working condition is improved, the load bearing capacity of the turntable 2 is greatly improved, the welding stress is reduced, and the service life of the turntable is further prolonged.
Optionally, the rotating shaft 1, as shown in fig. 5 to 6, includes a driving shaft head 9, a driven shaft head 10 and a rotating shaft main body 11, where the driving shaft head 9 and the driven shaft head 10 are respectively connected to two ends of the rotating shaft main body 11, and the driving shaft head 9 and the driven shaft head 10 are concentrically arranged with the rotating shaft main body 11;
the driving shaft head 9 is fixedly connected with the front end of the rotating shaft main body 11 through a first connecting portion 12, and the driven shaft head 10 is detachably connected with the rear end of the rotating shaft main body 11 through a second connecting portion 13.
Optionally, the rear end of the driving spindle head 9 is inserted into the front end of the rotating shaft main body 11, and the front end of the driven spindle head 10 is inserted into the rear end of the rotating shaft main body 11.
In order to adapt to various severe working conditions, the wall thickness of the rotating shaft main body 11 is 20-25mm.
Optionally, the driving shaft head 9 and/or the driven shaft head 10 may be externally provided with a bolt hole and/or a stepped clamping structure connected with an external driving device.
Optionally, the first connecting portion 12 includes a first support ring 1201, a plurality of first reinforcing ribs 1203 and a second support ring 1202, the first support ring 1201 and the second support ring 1202 are sequentially sleeved on the outer side of the driving spindle head 9, and the first reinforcing ribs 1203 are disposed between the first support ring 1201 and the second support ring 1202 and are uniformly distributed along the circumferential direction of the driving spindle head 9.
In an embodiment of the present invention, the first connecting portion 12 includes four first reinforcing ribs 1203, the first reinforcing ribs 1203 have a rectangular parallelepiped structure, and the length directions of the first reinforcing ribs 1203 are respectively directed to the first support ring 1201 and the second support ring 1202.
Alternatively, the second support ring 1202 is located near the rear end of the driving stub shaft 9, and the first support ring 1201 is located near the front end of the rotating shaft body 11 when the rear end of the driving stub shaft 9 is inserted into the front end of the rotating shaft body 11.
Optionally, the first reinforcing ribs 1203 are all welded on the outer side of the driving spindle head 9, and the first supporting ring 1201 and the second supporting ring 1202 are both welded on the outer side of the driving spindle head 9 and the inner wall of the rotating spindle body 11.
Optionally, the first support ring 1201 and the second support ring 1202 are in interference fit with the rotating shaft body 11.
The second connecting portion 13 comprises a third support ring 1301, a plurality of second reinforcing ribs 1303 and a fourth support ring 1302, the third support ring 1301 and the fourth support ring 1302 are sequentially sleeved on the outer side of the driven shaft head 10, and the second reinforcing ribs 1303 are arranged between the third support ring 1301 and the fourth support ring 1302 and are uniformly distributed along the circumferential direction of the driven shaft head 10.
In an embodiment of the present invention, the second connection portion 13 includes four second reinforcing ribs 1303, the second reinforcing ribs 1303 have a rectangular parallelepiped structure, and the length directions of the second reinforcing ribs 1303 are respectively directed to the third support ring 1301 and the fourth support ring 1302.
Alternatively, the fourth support ring 1302 is located at a position close to the front end of the driven shaft head 10, and when the front end of the driven shaft head 10 is inserted into the rear end of the rotating shaft body 11, the third support ring 1301 is located at a position close to the rear end of the rotating shaft body 11.
Optionally, the second reinforcing ribs 1303 are welded to the outer side of the driven shaft head 10.
Optionally, the third support ring 1301 and the fourth support ring 1302 are in interference fit with the rotating shaft body 11.
Optionally, a plurality of welding holes 14 are formed in a side wall of the front end of the rotating shaft main body 11, and are used for welding and connecting the first support ring 1201 and the second support ring 1202 with the inner wall of the rotating shaft main body 11; the side wall of the rear end of the rotating shaft main body 11 is provided with a plurality of bolt holes 29, and the third support ring 1301 and the fourth support ring 1302 are detachably connected with the inner wall of the rotating shaft main body 11 through bolts.
In one embodiment of the present invention, two sets of through holes 14 are respectively formed in the front end of the rotating shaft body 11 along the circumferential direction, each set includes six through holes, the positions of the two sets of through holes respectively correspond to the first support ring 1201 and the second support ring 1202, and after the driving spindle head 9 is pressed into the rotating shaft body 11, plug welding is performed through the through holes 14, so that the first connecting portion 12 is welded and fixed to the rotating shaft body 11; two sets of bolt holes 29 are respectively formed in the rear end of the rotating shaft body 11 along the circumferential direction, each set includes six bolt holes, the positions of the two sets of bolt holes correspond to the bolt holes of the third support ring 1301 and the fourth support ring 1302, and after the driven spindle head 10 is pressed into the rotating shaft body 11, the second connecting portion 13 is fixedly connected with the rotating shaft body 11 through bolts.
As shown in fig. 7-11, optionally, the biological contact body 15 comprises six fan-shaped mesh bodies, which are sequentially arranged to form a circle, the mesh bodies are provided with six mounting holes 17, thin edges 18 are formed at the peripheries of the mounting holes 17 through hot pressing, and the thickness of the thin edges 18 is smaller than that of other areas of the mesh bodies. The mounting hole 17 is used for mounting the supporting shaft 16, and the thin edge 18 can ensure the strength and the mounting requirement of the biological contact body 15.
In one embodiment of the present invention, three mounting holes 17 are respectively disposed on three edges of the fan-shaped mesh body, that is, six mounting holes are disposed on one fan-shaped mesh body.
Optionally, a plurality of connecting pipe fittings 19 are sleeved on the outer side of the supporting shaft 16, the connecting pipe fittings 19 are connected end to end, the supporting shaft 16 penetrates through hollow pipelines in the middle of the connecting pipe fittings 19, and the end to end connecting positions are located in the positions of the mounting holes 17 of the meshed body.
Optionally, the connecting pipe 19 sequentially includes an external thread connecting end 20, a hollow pipe 21 and an internal thread connecting end 22, a first pressure plate 23 is arranged between the external thread connecting end 20 and the hollow pipe 21, a second pressure plate 24 is arranged between the hollow pipe 21 and the internal thread connecting end 22, and the external thread connecting end 20, the internal thread connecting end 22, the first pressure plate 23 and the second pressure plate 24 are all arranged concentrically with the hollow pipe 21; the hollow pipe 21, the external thread connecting end 20 and the internal thread connecting end 22 are all hollow, and form a hollow pipeline; the first platen 23 and the second platen 24 are both provided outside the hollow duct.
Connect pipe fitting 19 wholly for cylindrical, the outer wall of thread connection end 20 is equipped with the external screw thread, and thread connection end 22's inner wall is equipped with the internal thread, external screw thread and internal thread mutually support for two adjacent thread connection end 20 and the thread connection end 22 swivelling joint of connecting pipe fitting 19.
Further alternatively, the first pressure plate 23 and the second pressure plate 24 may be provided with a plurality of reinforcing ribs on the sides facing each other, for example, the first pressure plate may be provided with four reinforcing ribs on the side facing the second pressure plate and arranged uniformly in the axial direction of the first pressure plate, and the second pressure plate may be provided with four reinforcing ribs on the side facing the first pressure plate and arranged uniformly in the axial direction of the second pressure plate, so as to enhance the strength of the first pressure plate and the second pressure plate, and to support the biological contact body 15 with sufficient strength when the first pressure plate and the second pressure plate contact and fix the mesh body of the biological contact body 15.
Optionally, the connection between the female connection end 22 and the second platen 24 is provided with a circle of pressing groove 25 recessed toward the inside of the second platen, and when the male connection end 20 of the previous connection pipe 19 is screwed into the female connection end 22 of the next connection pipe, the tail edge of the male connection end 20 can be inserted into the pressing groove 25 of the next connection pipe, so that the connection firmness of the two connection pipes 19 is enhanced. In practical application, the distance between the tail edge of the external thread connecting end 20 and the rear end of the pressing groove 25 of the next connecting pipe fitting is ensured to be 0.1-0.5 mm.
Optionally, the outer turntable 201 and the inner turntable 202 are both circular, and a through hole 203 is formed in a position corresponding to the mounting hole 17 of the biological contact body 15, the through hole 203 is used for enabling the support shaft 16 to penetrate through the turntable 2, so that the turntable 2 fixes the support shaft 16, the support shaft 16 supports the biological contact body 15, and the biological contact body 15 is fixed.
Optionally, the position of mounting hole 17 is equipped with two end to end's connecting pipe fittings 19, the threaded connection end 20 of the preceding connecting pipe fitting connects the threaded connection end 22 of the following connecting pipe fitting, centre gripping the featheredge 18 of mounting hole 17 between the first pressure disk 23 of the preceding connecting pipe fitting and the second pressure disk 24 of the following connecting pipe fitting, and be equipped with rubber packing ring 26, the hollow pipe of two connecting pipe fittings 19 forms a continuous hollow pipeline that runs through mounting hole 17, back shaft 16 penetrates connecting pipe fitting 19, can run through hollow pipeline, passes the mounting hole of biological contact 15 simultaneously.
The method for installing and fixing the biological contact bodies 15 avoids the problem that the supporting shaft 16 directly penetrates through the installing hole 17 but cannot fix the front and back positions of each biological contact body 15, so that the biological contact bodies 15 slide on the supporting shaft 16 front and back, the plurality of connecting pipe fittings 19 are mutually screwed up step by step in a front and back connection mode, a continuous hollow pipeline is formed on the basis of fixing the relative position of each biological contact body 15, the supporting shaft 16 penetrates through the installing hole 17 to fix the biological contact bodies 15, and the reliability of connection of the plurality of biological contact bodies 15 is ensured.
Optionally, the outer support shaft 1601 sequentially penetrates through the outer dial 201, the biological contact 15 and the inner dial 202 at the corresponding positions of the through hole 203 and the mounting hole 17; the inner support shaft 1602 penetrates the inner reel 202, the biological contact body 15, and the other inner reel in this order at the corresponding positions of the through-hole 203 and the mounting hole 17.
In an embodiment of the present invention, 11 biological contact bodies 15 are disposed between the outer rotating disk 201 and the inner rotating disk 202, and are used as an outer group biological contact body, 8 biological contact bodies 15 are disposed between the two inner rotating disks 202, and are used as an inner group biological contact body, when the biological contact bodies are mounted, the biological contact bodies of the middle 8 groups are mounted by using a plurality of connecting pipe fittings 19 and inner supporting shafts 1602, and then the biological contact bodies of the 11 biological contact bodies on both sides are mounted by using a plurality of connecting pipe fittings 19 and outer supporting shafts 1601. In order to ensure that the installation intervals of each group of biological contact bodies are uniform, the first pressure plate 23 and the second pressure plate 24 are adopted as unilateral connecting components on two sides of each biological contact body, field repair and assembly can be carried out, the biological contact bodies 15 are assembled according to the installation size of the rotary table 2, and the requirement on the manufacturing precision of the rotary table 2 is reduced.
Optionally, the supporting shaft 16 is a stainless steel pipe, two ends of the stainless steel pipe are in transition fit and press-fit into a section of stainless steel round steel, and circumferential welding is performed on the end portion of the stainless steel round steel, and the turntable 2 is arranged between the stainless steel pipe and the stainless steel round steel, namely the supporting shaft 16 can be clamped on the turntable 2 by the stainless steel round steel and is not easy to fall off; and a plurality of plug welding holes are uniformly formed in the two ends of the stainless steel pipe along the circumference so as to ensure the connection strength of the round steel and the steel pipe.
Optionally, a radial through hole is formed in one end of the outer support shaft 1601 and used for axially positioning the outer support shaft 1601.
Further optionally, a support sleeve 27 is arranged at the through hole 203 of the outer rotating disc 201, an inner opening pin hole and an outer opening pin hole are arranged on the support sleeve 27, the inner opening pin hole is used for fixing the outer support shaft 1601, so that the radial through hole of the outer support shaft 1601 is aligned to the inner opening pin hole, and a first bolt simultaneously penetrates through the radial through hole and the inner opening pin hole, so that the outer support shaft 1601 is connected with the support sleeve 27, and the axial movement of the outer support shaft 1601 is limited; a second bolt penetrates through the outer opening pin hole and abuts against the end portion of the outer supporting shaft 1601, and the second bolt is used for ensuring that the outer supporting shaft 1601 cannot jump out of the outer rotating disc 201 after connection failure of the inner opening pin hole.
The biological contact body 15 is formed by a solid fan-shaped reticular body which is processed and formed by polyvinylidene chloride (PVDC) serving as a high-quality material, the porosity is more than 95-98 percent in a silk screen state, and a biological layer can enter the inside of the reticular body, so that the falling of the biological layer on the surface of the biological contact body can be avoided, and the biological attachment amount is greatly improved and is 900 times of that of a conventional carrier.
Claims (5)
1. A three-section type biological rotating disc sewage treatment device is characterized by comprising a rotating shaft, a rotating disc and a plurality of biological contact bodies, wherein the biological contact bodies are fixed on the rotating shaft through the rotating disc;
the turntable is concentrically arranged with the rotating shaft and comprises two outer turnplates and two inner turnplates, the two outer turnplates are respectively fixed at two ends of the rotating shaft, and the two inner turnplates are uniformly and detachably arranged in the middle of the rotating shaft;
the biological contact bodies are arranged between the outer rotating disc and the inner rotating disc and between the two inner rotating discs, and the biological contact bodies and the rotating shaft are arranged concentrically;
the rotating shaft comprises a driving shaft head, a driven shaft head and a rotating shaft main body, the rotating shaft main body is of a hollow cylindrical structure and is formed by connecting a plurality of sections of hollow cylinders end to end, the driving shaft head is fixedly connected to one end of the rotating shaft main body, and the driven shaft head is detachably connected to the other end of the rotating shaft main body; the driving shaft head and the driven shaft head are arranged concentrically with the rotating shaft main body;
a supporting device is arranged inside the rotating shaft main body and comprises a hollow first cylinder, a plurality of supporting blocks and supporting rods;
the supporting rod is arranged in the first barrel and can horizontally move in the first barrel, and when the supporting rod moves between two supporting blocks which are symmetrical up and down, the two supporting blocks are ejected out of the first barrel;
the outer side of the front end of each hollow cylinder is provided with an external thread, the inner side of the rear end of each hollow cylinder is provided with an internal thread, and the internal threads and the external threads of two adjacent hollow cylinders are matched, so that the two hollow cylinders are connected end to end; the horizontal distance between two adjacent pairs of supporting blocks is equal to the length of one hollow cylinder, so that each pair of supporting blocks corresponds to the joint of the adjacent hollow cylinders;
when the supporting rod moves to a position between two vertically symmetrical supporting blocks to push the two supporting blocks out of the first cylinder, the height sum of each pair of supporting blocks and the supporting rod is equal to the inner diameter of the joint of the adjacent hollow cylinders, namely the inner diameter of the front end of each hollow cylinder;
the outer diameter of the front end of the supporting rod is smaller than that of other parts of the supporting rod, and the front end of the supporting rod is of an arrow structure and has an inclined slope;
one end of the supporting block, which is positioned in the first cylinder, is provided with an inclined slope facing the rear end of the rotating shaft main body, so that the front end of the supporting rod is easy to separate a pair of supporting blocks stacked up and down;
the lengths of the first cylinder and the supporting rod can be adjusted according to the length of the rotating shaft main body;
the front end of the first cylinder body is in contact with the tail part of the driving shaft head, and the position of the first cylinder body is fixed through the contact of the upper and lower supporting blocks and the inner wall of the hollow cylinder body;
the first cylinder body and the supporting rod are equal in length, the front end of the first cylinder body is closed, the rear end of the first cylinder body is provided with an opening, and the rear end of the first cylinder body is provided with a rear cover which can close the rear end of the first cylinder body;
the supporting rod enters the first barrel from the opening at the rear end of the first barrel, the supporting rod sequentially jacks up each pair of supporting blocks and completely enters the first barrel, the rear end of the first barrel is covered by a rear cover, and the supporting rod is fixed in the first barrel;
the rear cover is in contact with the front end of the driven shaft head, and the position of the first cylinder in the rotating shaft main body is fixed.
2. The sewage treatment plant with the three-section biological rotating disc according to claim 1, wherein a connecting disc is arranged outside the rotating shaft, and the connecting disc and the rotating shaft are arranged concentrically; the connecting discs comprise two outer disc connecting discs and two inner disc connecting discs, the positions of the two outer disc connecting discs respectively correspond to the two outer rotating discs, and the positions of the two inner disc connecting discs respectively correspond to the two inner rotating discs;
the connecting disc and the rotary disc at the corresponding positions are positioned by adopting a spigot and are fixedly connected through a reaming hole bolt.
3. The three-section biological rotating disk sewage treatment plant according to claim 1, wherein the driving shaft head is fixedly connected with the front end of the rotating shaft main body through a first connecting portion, and the driven shaft head is detachably connected with the rear end of the rotating shaft main body through a second connecting portion.
4. The three-section biological rotating disc sewage treatment plant according to claim 1, further comprising a connection fixing component, wherein the connection fixing component comprises a reinforcing rib welding piece and a support shaft, the reinforcing rib welding piece comprises an outer reinforcing rib welding piece and an inner reinforcing rib welding piece, the inner reinforcing rib welding piece is connected between two inner rotating discs, and the outer reinforcing rib welding piece is connected between the inner rotating discs and the outer rotating discs;
the back shaft includes outer support shaft and interior support shaft, interior support shaft is connected between two inner turntables to run through the biological contact body between two inner turntables in proper order, outer support shaft connect between inner turntable and outer turntable, and run through the biological contact body between inner turntable and the outer turntable in proper order.
5. The sewage treatment plant with the three-stage biological rotating disc according to claim 4, wherein the biological contact body comprises six fan-shaped mesh bodies which are sequentially arranged to form a circle, the mesh bodies are provided with six mounting holes, thin edges are formed at the peripheries of the mounting holes through hot pressing, and the thickness of the thin edges is smaller than that of other areas of the mesh bodies;
the outside of back shaft has cup jointed a plurality of and has connected the pipe fitting, connect the end to end connection each other of pipe fitting, the back shaft runs through the cavity pipeline at a plurality of connection pipe fitting middle part, the position of end to end connection is in the position of the mounting hole of dictyosome.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110972461.5A CN113562839B (en) | 2021-08-24 | 2021-08-24 | Three-section type biological rotating disc sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110972461.5A CN113562839B (en) | 2021-08-24 | 2021-08-24 | Three-section type biological rotating disc sewage treatment device |
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| CN113562839B true CN113562839B (en) | 2023-03-14 |
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| CN114538714B (en) * | 2022-03-08 | 2023-05-16 | 青海洁神环境科技股份有限公司 | Sewage treatment method by utilizing MBBR to cooperate with BBR |
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| CN202924821U (en) * | 2012-11-28 | 2013-05-08 | 成都新筑展博环保科技有限公司 | Integrated rotating biological disc sewage treatment device |
| CN103097305A (en) * | 2010-12-06 | 2013-05-08 | 积水设备系统株式会社 | Waste water treatment apparatus |
| CN206298414U (en) * | 2016-10-28 | 2017-07-04 | 重庆川仪环境科技有限公司 | A kind of rotating shaft for biological rotating disk sewage-treatment plant |
| CN110627202A (en) * | 2018-09-25 | 2019-12-31 | 青海洁神环境能源产业有限公司 | Three-dimensional rotary type net contact body assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2962049B1 (en) * | 2010-07-02 | 2015-04-24 | Veolia Water Solutions & Tech | WATER TREATMENT DEVICE COMPRISING A FULL FILTER DRUM |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097305A (en) * | 2010-12-06 | 2013-05-08 | 积水设备系统株式会社 | Waste water treatment apparatus |
| CN202924821U (en) * | 2012-11-28 | 2013-05-08 | 成都新筑展博环保科技有限公司 | Integrated rotating biological disc sewage treatment device |
| CN206298414U (en) * | 2016-10-28 | 2017-07-04 | 重庆川仪环境科技有限公司 | A kind of rotating shaft for biological rotating disk sewage-treatment plant |
| CN110627202A (en) * | 2018-09-25 | 2019-12-31 | 青海洁神环境能源产业有限公司 | Three-dimensional rotary type net contact body assembly |
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