CN113045172B - Self-rotating sedimentation type sludge thickener - Google Patents
Self-rotating sedimentation type sludge thickener Download PDFInfo
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- CN113045172B CN113045172B CN202110364695.1A CN202110364695A CN113045172B CN 113045172 B CN113045172 B CN 113045172B CN 202110364695 A CN202110364695 A CN 202110364695A CN 113045172 B CN113045172 B CN 113045172B
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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Abstract
The invention discloses a spin precipitation type sludge concentration tank, which comprises a cylindrical concentration tank main body and is characterized in that muddy water is led to the top of the cylindrical concentration tank main body through a muddy water inlet pipe, and is respectively connected with a plurality of drainage pipes which are deep into the inner cavity of the cylindrical concentration tank main body through sub-connectors, a bent tangential mud outlet is arranged at the outlet of the bottom of each drainage pipe, and the muddy water is led into the inner wall of the cylindrical concentration tank main body through the tangential mud outlets and is guided by the inner wall to rotate.
Description
Technical Field
The invention belongs to the technical field of sludge concentration treatment equipment, and particularly relates to a technology for improving a structure of a sludge concentration tank.
Background
At present, a sludge concentration device used in a sewage treatment plant or a chemical plant is basically a sludge concentration tank, and the sludge concentration tank is used for reducing the water content of sludge and reducing the volume of the sludge, so that the subsequent treatment cost is reduced.
Traditional gravity sludge concentration pond is from sludge concentration pond top center sludge water of discharging into, and mud after the concentration is discharged from sludge concentration pond bottom, specifically is: solid particles in the sludge discharged into the sludge concentration tank descend to the bottom of the sludge concentration tank by virtue of self gravity, the solid particles are discharged from the bottom of the sludge concentration tank through a discharge pipe, and the sewage is discharged from a weir crest on the surface of the sludge concentration tank in an overflowing manner, so that the purposes of sludge sedimentation and concentration are achieved; however, since the settling speed of the sludge solid particles in the sludge water is low, the sludge solid particles can stay in the sludge concentration tank for 12-24 hours to complete settling, so that the conventional gravity sludge concentration tank has the problems of low sludge concentration efficiency and high water content.
Disclosure of Invention
Aiming at the defects and problems of the existing sludge concentration tank in the sludge concentration process, the invention provides a self-rotating sedimentation type sludge concentration tank, which can improve the separation efficiency of the sludge gravity concentration tank, reduce the sludge concentration time and improve the sludge concentration.
The technical scheme for solving the technical problem is as follows: the self-spinning sedimentation type sludge concentration tank is adopted and comprises a cylindrical concentration tank main body, and is characterized in that slurry is led to the top of the cylindrical concentration tank main body through a slurry inlet pipe, and then is respectively connected with a plurality of drainage pipes which are deep into the inner cavity of the cylindrical concentration tank main body through sub-connectors, a bent tangential slurry outlet is arranged at the outlet of the bottom of each drainage pipe, the slurry is led into the inner wall of the cylindrical concentration tank main body through the tangential slurry outlet and is guided by the inner wall to rotate, an overflow port is arranged at the top of the inner cavity of the cylindrical concentration tank main body and communicated with an overflow pipe, and a slurry outlet pipe and a corresponding valve are arranged at the bottom of the inner cavity of the cylindrical concentration tank main body; a partition plate is arranged in the cylindrical concentration tank main body between the drainage tube and the sludge outlet tube, and hermetically divides the cylindrical concentration tank main body into an upper sedimentation cavity and a lower sewage discharge cavity from top to bottom; a plurality of strip-shaped sludge discharge grooves which axially penetrate through the partition plate are uniformly formed in the partition plate along the circumference, and the sludge discharge grooves are formed in the radial direction; a mud blocking filter plate is arranged on a partition plate on the upstream side of the mud discharge groove, and the upstream side of the mud blocking filter plate is flush with the upstream side of the mud discharge groove; the lower sewage discharging cavity is internally matched with an inverted cone-shaped mud collecting pipe, the top end of the mud collecting pipe is connected with the bottom surface of the partition plate in a sealing mode, the plurality of mud discharging grooves are located in the top opening of the mud collecting pipe, and the bottom opening of the mud collecting pipe is connected with the mud inlet of the mud discharging pipe.
The plurality of drainage tubes are respectively and vertically arranged on the same circumferential surface in the inner cavity of the cylindrical concentration tank main body.
The tangential mud outlets at the bottom of each drainage tube are transverse tubes perpendicular to the vertical drainage tubes, and the outlet directions of the transverse tubes are positioned in the tangential direction of the circumferential surface and are consistent.
And the drainage tubes are respectively fixed on the inner wall of the cylindrical concentration tank main body by an inner wall bracket from top to bottom.
An overflow port ring body with the diameter smaller than the inner wall of the cylindrical thickening tank main body is arranged at the upper end of the inner cavity of the cylindrical thickening tank main body, an annular overflow groove is formed between the overflow port ring body and the cylindrical thickening tank main body, the bottom of the annular overflow groove is sealed, and an outward overflow port is arranged on the outer side wall of the annular overflow groove and is connected with the overflow pipe through an overflow port joint.
A plurality of layers of annular support frames are fixed among the vertical drainage tubes, and the annular support frames on any layer connect the plurality of drainage tubes in series and are fixed together to form an integral structure.
The side of the cylindrical concentration tank main body is provided with an escalator, and the top of the cylindrical concentration tank main body is provided with a guardrail.
The top end of the mud blocking filter plate is obliquely arranged towards the back surface of the corresponding mud discharging groove.
The mud discharging groove and one groove wall adjacent to the inner ring wall of the cylindrical concentration tank main body are arranged in a scattering shape in an upward inclined mode and are connected with the inner ring wall of the cylindrical concentration tank main body, and the mud blocking filter plate and one end adjacent to the inner ring wall of the cylindrical concentration tank main body are connected with the inner ring wall of the cylindrical concentration tank main body along the mud discharging groove.
The invention has the beneficial effects that: the invention realizes the unpowered rotational flow sedimentation function by arranging the sludge inlet pipe, can accelerate sedimentation and promote sludge-water separation, and realizes the purpose of accelerating concentration.
The sludge water output from the tail end of the drainage tube rotates along the inner wall of the cylindrical concentration tank main body, the drainage tube provides continuous rotating power to finally push the sludge water in the inner cavity of the cylindrical concentration tank main body to integrally rotate, and eddy current phenomenon is formed in the inner cavity of the cylindrical concentration tank main body after rotation, so that sludge with larger specific gravity moves and gathers towards the edge of the concentration tank due to centrifugal action; in the process of sludge rotational flow sedimentation, sludge with high specific gravity is guided and intercepted by the sludge blocking filter plate, falls through the sludge discharge groove along the sludge blocking filter plate, falls into the sludge accumulation pipe in the lower sludge discharge cavity of the cylindrical concentration tank main body, falls along the conical inner cavity wall of the sludge accumulation pipe and is accumulated at the sewage discharge port, and is discharged out of the cylindrical concentration tank main body through the sludge discharge pipe, so that the sludge concentration treatment effect is improved, and the purpose of accelerating concentration is realized; and the sewage with smaller specific gravity is retained in the center of the vortex and is pressed to rotate and move upwards, flows along with the side wall of the inner cavity of the main body of the cylindrical concentration tank, flows to the upper layer of sewage, overflows from the edge of the ring body of the overflow port, enters the annular overflow groove for temporary storage, enters the overflow pipe through the joint of the overflow port from the annular overflow groove and then is discharged, so that the continuous operation of the sewage can be realized.
The invention provides a spin precipitation type sludge thickening tank which is unique in structure and convenient to operate, and not only effectively solves the problems of low separation efficiency and long sludge thickening time of the traditional gravity sludge thickening tank, but also effectively solves the problems of poor sludge thickening treatment effect and incapability of continuously performing sludge thickening operation of the traditional gravity sludge thickening tank.
Drawings
FIG. 1 is a side view of a sludge concentrating tank according to the present invention.
FIG. 2 is a side view of the thickening tank body of the present invention.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a top view of fig. 2.
FIG. 5 is a schematic view showing the internal structure of the main body of the cylindrical thickening tank of the present invention.
FIG. 6 is a schematic view of the position of the partition plate mud discharge groove.
FIG. 7 is a schematic view showing the connection of the sludge discharge groove of the present invention to the inner wall of the main body of the cylindrical thickening tank.
Fig. 8 is one of the structures of the mud-blocking filter plate of the present invention.
Fig. 9 is a second schematic view of the mud-blocking filter plate according to the present invention.
Fig. 10 is a schematic view of the inclined direction of the mud discharging groove wall of the present invention.
Fig. 11 is a schematic view of the position of the vertical filter plate according to the present invention.
Reference numbers in the figures: the device comprises a cylindrical concentration tank main body 1, an upper settling chamber 101, a lower sewage discharging chamber 102, a reinforced concrete base 2, a base layer 3, a guardrail 4, a staircase 5, a mud inlet pipe 6, a tee joint 7, a drainage pipe 8, a tangential mud outlet 9, a mud outlet pipe 10, an inner wall support 11, an overflow port ring body 12, an annular overflow groove 13, an overflow port joint 14, an overflow pipe 15, a manual ball valve 16, a partition plate 17, a mud discharging groove 18, a mud blocking filter plate 19, a mud collecting pipe 20, a vertical filter plate 21 and a conical ring-shaped sewage blocking net 22.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the drawings.
Example 1: as shown in the figures 1 and 3, the sludge thickening tank mainly comprises a cylindrical thickening tank main body 1, wherein a staircase is arranged on the side surface of the cylindrical thickening tank main body, and a guardrail is arranged on the top of the cylindrical thickening tank. And a reinforced concrete base 2 is constructed on the base layer 3, and the bottom of the cylindrical concentration tank main body 1 is fixed on the reinforced concrete base 2. The pump body connected with the mud inlet pipe and the mud outlet pipe is omitted in the figure.
Corresponding pipe arrangement is as shown in fig. 2 and 4, advances mud pipe 6 and upwards drains along the lateral wall of cylinder thickening pond main part 1 and becomes horizontal at cylinder thickening pond main part 1 top, advances the terminal position in cylinder thickening pond main part 1 top center of mud pipe 6 to, it leads muddy water to cylinder thickening pond main part 1 top center to advance mud pipe 6, so as to do benefit to evenly to each branch pipe output mud.
The tail end of the mud inlet pipe 6 is connected with a tee joint 7, two branch pipes of the tee joint are respectively connected with two drainage pipes 8, and each drainage pipe 8 extends into the deep part of the inner cavity of the cylindrical concentration tank main body 1. As can be seen from the figure, the bottom outlets of the two drainage tubes are provided with elbow-shaped tangential mud outlets 9, the mud water is introduced into the inner wall of the cylindrical thickening tank body 1 through the tangential mud outlets 9 and guided by the inner wall to rotate, specifically, the tangential mud outlet 9 at the bottom of each drainage tube is a transverse tube perpendicular to the vertical drainage tube, and the outlet direction of the transverse tube is in the tangential direction of the circumferential surface and has the same direction, and the mud outlets 9 have various types, for example: the mud outlet 9 is a right-angle joint which is sleeved at the tail end of the drainage tube in a matching way; the top of the inner cavity of the cylindrical concentration tank body 1 is provided with an overflow port and is communicated with an overflow pipe 15.
A sludge outlet pipe 10 and a corresponding valve are arranged at the bottom of the inner cavity of the cylindrical concentration tank main body 1, and a partition plate 17 is arranged in the cylindrical concentration tank main body 1 between the drainage pipe 8 and the sludge outlet pipe 10, as shown in fig. 5 and 6, the cylindrical concentration tank main body 1 is hermetically divided into an upper sedimentation cavity 101 and a lower drainage cavity 102 from top to bottom by the partition plate 17; a plurality of strip-shaped sludge discharge grooves 18 which axially penetrate through the partition plate 17 are uniformly formed in the partition plate 17 along the circumference, and the number of the sludge discharge grooves 18 is not less than 6; the partition plate 17 on the water-facing door surface side of the sludge discharge groove 18 is provided with a sludge blocking filter plate 19, the sludge blocking filter plate 19 is arranged along the direction of the opening of the sludge discharge groove 18, the water-facing surface of the sludge blocking filter plate 19 is flush with the water-facing surface of the sludge discharge groove, and filter holes are distributed in the sludge blocking filter plate 19 and used for intercepting sludge particles which follow the sludge and rotate along the inner wall of the bottom of the inner wall of the cylindrical concentration tank main body 1, so that the sludge particles pass through the sludge discharge groove 18 and fall into the lower sewage discharge cavity.
Lower blowdown intracavity 102 interior matching is equipped with back taper and gathers mud pipe 20, gathers the top and the baffle 17 bottom surface sealing connection of mud pipe 20, and a plurality of mud discharging groove 18 all are located the top of gathering mud pipe 20, and the end opening that gathers mud pipe 20 is connected with play mud pipe 10 mud inlet, and the mud that passes baffle 17 can drop to gathering in the mud pipe 20 to the toper inner annular wall that gathers mud pipe falls to the mud inlet department of play mud pipe 10, the outside mud of discharging of being convenient for.
When in use, as shown in fig. 8, the output sludge water rotates along the inner wall of the cylindrical thickening tank main body 1 through the tail end of the drainage tube 8, the drainage tube 8 continuously outputs the sludge water into the cylindrical thickening tank main body 1, so that the drainage tube 8 provides continuous rotating power, and finally the sludge water in the sedimentation chamber 101 on the cylindrical thickening tank main body 1 is pushed to integrally rotate, after the rotation, an eddy phenomenon is formed in the inner chamber of the upper sedimentation chamber 101 of the cylindrical thickening tank main body 1, so that the sludge with higher specific gravity moves and gathers towards the edge of the thickening tank due to centrifugal action, thereby accelerating the separation speed of the sludge and the sewage in the sludge water, accelerating the sedimentation speed of the sludge, and the sludge with higher specific gravity in the sludge water rotates along with the rotating sludge water, the sludge water rotates continuously through the filter holes of the sludge blocking filter plate 19 during the rotation process, while the sludge particles in the sludge water cannot pass through the filter holes, thereby being intercepted by the sludge blocking filter plate 19, and fall through the sludge groove into the sludge gathering pipe 20 of the cylindrical thickening tank main body (1) and fall into the conical wall of the sludge gathering pipe, thereby realizing the effect that the sludge in the sludge outlet of the cylindrical thickening tank (17) is not influenced by the rotating sludge pipe, thereby realizing the sludge discharge of the sludge concentrating tank, and the sludge discharge target sludge discharge pipe (17); while the sewage with lower specific gravity is left at the center of the vortex and is forced to rotate and move upwards.
As shown in fig. 5, in this embodiment, an overflow ring 12 with a diameter smaller than the inner wall of the cylindrical thickening tank body 1 is further disposed at the upper end of the inner cavity of the cylindrical thickening tank body 1, an annular overflow groove 13 is formed between the overflow ring 12 and the cylindrical thickening tank body 1, the bottom of the annular overflow groove 13 is sealed, and the outer side wall has an outward overflow port and is connected to the overflow pipe 15 through an overflow port joint 14. Therefore, the upper layer of the sewage which rotates upwards along with the side wall of the inner cavity of the cylindrical concentration tank body 1 overflows from the edge of the overflow port ring body 12 and enters the annular overflow groove 13 for temporary storage, and then enters the overflow pipe 15 from the annular overflow groove 13 through the overflow port joint 14 and is discharged. Therefore, when the sludge concentration tank provided by the embodiment is used, the sludge with larger specific gravity in the sludge water automatically moves and gathers towards the edge of the concentration tank, so that the separation speed of the sludge and the sewage in the sludge water is increased, and the time required by natural sedimentation of the sludge is shortened; in the process of sludge rotational flow sedimentation, sludge with high specific gravity is guided by the sludge blocking filter plate to be intercepted, falls through the sludge discharge groove along the sludge blocking filter plate, falls into the sludge collecting pipe in the lower sewage discharge cavity of the cylindrical concentration tank main body, falls along the conical inner cavity wall of the sludge collecting pipe and is collected at the sewage discharge port, and is discharged out of the cylindrical concentration tank main body through the sludge discharge pipe, so that the sludge concentration treatment effect is improved, and the purpose of accelerating concentration is realized; and the sewage with smaller specific gravity is retained in the center of the vortex and is pressed to rotate and move upwards, flows along with the side wall of the inner cavity of the main body of the cylindrical concentration tank, flows to the upper layer of sewage, overflows from the edge of the ring body of the overflow port, enters the annular overflow groove for temporary storage, enters the overflow pipe through the joint of the overflow port from the annular overflow groove and then is discharged, so that the continuous operation of the sewage can be realized.
Example 2: another kind of unpowered whirl deposits formula sludge thickening tank, on embodiment 1 major structure basis, this embodiment leads muddy water to behind the cylinder thickening tank main part 1 top through advancing mud pipe 6, and the rethread piecings connect a plurality of drainage tubes 8 of deepening the cylinder thickening tank main part 1 inner chamber depths respectively. The bottom outlet of each drainage tube is provided with a bent tangential mud outlet 9, mud water is introduced into the inner wall of the cylindrical concentration tank main body 1 through the tangential mud outlet 9 and is guided by the inner wall to rotate, the top of the inner cavity of the cylindrical concentration tank main body 1 is provided with an overflow port and communicated with an overflow pipe 15, and the bottom of the inner cavity of the cylindrical concentration tank main body 1 is provided with a mud outlet pipe 10 and a corresponding valve.
Wherein, a plurality of drainage tubes are respectively and vertically arranged on the same circumferential surface in the inner cavity of the cylindrical concentration tank main body 1. The tangential mud outlets 9 at the bottom of each drainage tube are transverse tubes perpendicular to the vertical drainage tubes, and the outlet directions of the transverse tubes are positioned in the tangential direction of the circumferential surface and are consistent.
Furthermore, each drainage tube is fixed on the inner wall of the cylindrical concentration tank main body 1 by an inner wall bracket 11 from top to bottom.
Example 3
The difference between the embodiment 3 and the embodiment 2 is that, as shown in fig. 9, a wall of the sludge discharge groove 18 adjacent to the inner circumferential wall of the cylindrical thickener body 1 is inclined upward in a scattering manner, and is connected with the inner annular wall of the cylindrical concentration tank main body 1, and one end of the sludge-blocking filter plate 19 adjacent to the inner annular wall of the cylindrical concentration tank main body (1) is connected with the inner annular wall of the cylindrical concentration tank main body 1 along the sludge discharge groove 18, when in use, the sludge water which is input into the cylindrical thickening tank main body 1 through the drainage tube 8 and to the sludge outlet 9 can rotate along the inner wall of the cylindrical thickening tank main body 1 in the cylindrical thickening tank main body 1, finally, the sludge with higher specific gravity in the sludge water moves and gathers to the edge of the thickening tank due to the centrifugal action, thereby accelerating the separation speed of the sludge and the sewage in the sludge water, accelerating the sedimentation speed of the sludge, and the sludge with larger specific gravity in the sludge water can rotate along with the rotating sludge water in the sedimentation process, the sewage can pass through the filtering holes of the sludge blocking filtering plate 19 to continue rotating in the sludge water rotating process, and the sludge particles in the sludge water can not pass through the filtering holes, thereby being intercepted by the mud-blocking filter plate 19, falling along the mud-blocking filter plate 19, passing through the mud discharge groove, falling into the mud-gathering pipe 20 of the cylindrical concentration tank main body (1), and falling to the mud inlet of the mud outlet pipe 10 along the conical inner ring wall of the mud-gathering pipe, the mud pipe is discharged out of the cylindrical concentration tank main body (1) to achieve the purpose of accelerating concentration, compared with the embodiment 2, because the mud-blocking filter plate 19 in the concentration tank provided by the embodiment is connected with the cylindrical concentration tank main body 1, and one wall of the sludge discharge groove 18 adjacent to the inner annular wall of the cylindrical thickening tank body 1 is inclined upwards in a scattering shape, so that the sludge in the sludge water can be prevented from being accumulated on the partition plate 17 between the sludge discharge groove 18 and the inner annular wall of the cylindrical thickening tank body 1.
Example 4
Example 4 differs from example 3 in that the top ends of the mud-blocking filter plates are inclined toward the back surface of the corresponding mud discharge groove.
As shown in fig. 7 and 10, the top end of the sludge-blocking filter plate 19 is inclined towards the back surface of the sludge discharge groove, when in use, when sludge water carries sludge particles gathered at the edge of the concentration tank due to centrifugal action to rotate and contact with the sludge-blocking filter plate 19, sewage in the sludge water can directly pass through the filter hole of the sludge-blocking filter plate 19 to continue to rotate, the sludge particles in the sludge water can be intercepted by the sludge-blocking filter plate 19 to fall downwards, and the sludge particles can still be influenced by the rotation of the sludge water in the falling process to drive the sludge particles to collide with the upstream surface of the sludge-blocking filter plate 19, because the top end of the sludge-blocking filter plate 19 is inclined towards the back surface of the sludge discharge groove, the inclined sludge-blocking filter plate 19 can play a role in guiding the falling sludge particles, so that the sludge particles can rapidly fall into the sludge discharge groove, the concentration speed of the sludge is accelerated, and the time required for natural settling of the sludge is shortened.
Example 5
The difference between the embodiment 5 and the embodiment 4 is that, as shown in fig. 11, a vertical filter plate 21 is fixed on the inner annular wall of the cylindrical thickening tank main body 1 above each sludge discharge groove 18, filter holes identical to the sludge blocking filter plates 19 are distributed on the vertical filter plates 21, the top ends of the vertical filter plates 21 extend upwards along the inner annular wall of the cylindrical thickening tank main body 1 and are connected with the bottom of the overflow port ring body 12, the bottom ends of the vertical filter plates 21 extend downwards along the inner annular wall of the cylindrical thickening tank main body 1 to the front side of the water surface of the corresponding sludge blocking filter plates 19 or are connected with the top ends of the corresponding sludge blocking filter plates 19, when a vortex phenomenon is formed in the inner cavity of the upper settling chamber 101 of the cylindrical thickening tank main body 1, so that sludge with a higher specific gravity moves and accumulates toward the edge of the thickening tank due to centrifugal action, the vertical filter plates 21 block sludge accumulating at the edge of the thickening tank and rotating along the sludge discharge groove 18, and the accumulated sludge directly falls down along the sludge discharge groove 18 along the vertical filter plates 21 and enters the sludge accumulation groove above the sludge in the thickening tank, thereby avoiding sludge from accumulating along the inner annular wall of the sludge discharge groove, and the sludge of the sludge concentration tank, and the sludge in the sludge discharge groove 21, which the sludge can be directly shorten the sludge accumulation time required by the sludge in the sludge discharge groove.
Example 6
Embodiment 6 differs from embodiment 5 in that a cone-ring-shaped trash rack is fittingly installed on the overflow port ring body, and the diameter of the upper end ring opening of the cone-ring-shaped trash rack is smaller than that of the inner ring surface of the overflow port ring body.
As shown in fig. 5, the overflow opening ring 12 is provided with a conical ring-shaped trash rack 22 in a matching manner, and the diameter of the upper end ring opening of the conical ring-shaped trash rack is smaller than the diameter of the inner ring surface of the overflow opening ring, and the conical ring-shaped trash rack 22 is arranged in various manners, for example: a cone ring-shaped steel structure frame is fixed on the top end of the overflow port ring body 12, a layer of trash blocking net is laid on the inner cone ring surface of the steel structure frame, when sewage with smaller specific gravity is kept in the center of a vortex and is pressed to rotate and move upwards, and when flowing upper-layer sewage overflows from the edge of the overflow port ring body and enters the annular overflow groove to be temporarily stored, the cone ring-shaped trash blocking net 22 can block and filter the overflowing sewage, the content of sludge particles in the sewage is further reduced, and the diameter of the upper end ring opening of the cone ring-shaped trash blocking net is smaller than that of the inner ring surface of the overflow port ring body, so that the intercepted sludge particles fall into the cylindrical concentration tank main body 1 below the cone ring-shaped trash blocking net 22 downwards.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. For example, the upper edge of the overflow ring body 12 at the upper end of the inner cavity of the cylindrical thickening tank body 1 can be provided with a convex-concave annular structure, so that the plurality of grooves on the upper edge of the annular body can be used for uniformly overflowing towards the circumferential edge and isolating possible floating objects. Or a plurality of layers of annular support frames are fixed among the vertical drainage tubes, and the plurality of drainage tubes are connected and fixed together in series by any layer of annular support frame to form an integral structure. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A spin precipitation type sludge concentration tank comprises a cylindrical concentration tank main body and is characterized in that sludge water is led to the top of the cylindrical concentration tank main body through a sludge inlet pipe and is respectively connected with a plurality of drainage pipes which go deep into the inner cavity of the cylindrical concentration tank main body through sub-connectors, a bent tangential sludge outlet is arranged at the outlet of the bottom of each drainage pipe, the sludge water is led into the inner wall of the cylindrical concentration tank main body through the tangential sludge outlets and is guided by the inner wall to rotate, an overflow port is arranged at the top of the inner cavity of the cylindrical concentration tank main body and communicated with an overflow pipe, and a sludge outlet pipe and a corresponding valve are arranged at the bottom of the inner cavity of the cylindrical concentration tank main body; a partition plate is arranged in the cylindrical concentration tank main body between the drainage tube and the sludge outlet tube, and hermetically divides the cylindrical concentration tank main body into an upper sedimentation cavity and a lower sewage discharge cavity from top to bottom; a plurality of strip-shaped sludge discharge grooves which axially penetrate through the partition plate are uniformly formed in the partition plate along the circumference, and the sludge discharge grooves are formed in the radial direction; a mud blocking filter plate is arranged on a partition plate on the upstream side of the mud discharge groove, and the upstream side of the mud blocking filter plate is flush with the upstream side of the mud discharge groove; the lower sewage discharging cavity is internally and fittingly provided with an inverted cone-shaped mud collecting pipe, the top end of the mud collecting pipe is hermetically connected with the bottom surface of the partition plate, the plurality of mud discharging grooves are all positioned in the top opening of the mud collecting pipe, and the bottom opening of the mud collecting pipe is connected with the mud inlet of the mud discharging pipe; the drainage tubes are respectively and vertically arranged on the same circumferential surface in the inner cavity of the cylindrical concentration tank main body, the tangential sludge outlet at the bottom of each drainage tube is a transverse tube which is perpendicular to the vertical drainage tube, and the outlet direction of the transverse tube is positioned in the tangential direction of the circumferential surface and has the same direction.
2. The spin precipitation type sludge concentrating tank according to claim 1, wherein the drainage tubes are respectively fixed on the inner wall of the cylindrical concentrating tank main body by inner wall brackets from top to bottom.
3. The spin-sedimentation sludge thickener according to claim 1, wherein an overflow ring having a diameter smaller than that of the inner wall of the cylindrical thickener body is provided at the upper end of the inner chamber of the cylindrical thickener body, an annular overflow tank is formed between the overflow ring and the cylindrical thickener body, the bottom of the annular overflow tank is sealed, and the outer side wall has an outward overflow port and is connected to the overflow pipe through an overflow port joint.
4. The spin precipitation sludge thickener of claim 1, wherein a plurality of layers of annular supports are fixed between the vertical drainage tubes, and the annular supports of any layer connect the plurality of drainage tubes in series and fix the plurality of drainage tubes together to form an integral structure.
5. The spin precipitation type sludge thickener of claim 1, wherein the cylindrical thickener body has a staircase at a side thereof and a guard rail at a top thereof.
6. The spin-sedimentation sludge thickener according to claim 1, wherein the top end of the sludge-blocking filter plate is inclined toward the back surface of the corresponding sludge discharge tank.
7. The spin-sedimentation sludge thickener according to claim 1, wherein a wall of the sludge discharge chute adjacent to the inner circumferential wall of the cylindrical thickener body is inclined upward in a scattering manner and is connected to the inner circumferential wall of the cylindrical thickener body, and one end of the sludge blocking filter plate adjacent to the inner circumferential wall of the cylindrical thickener body is connected to the inner circumferential wall of the cylindrical thickener body along the sludge discharge chute.
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| CN113480119B (en) * | 2021-07-23 | 2023-01-10 | 深圳市市政工程总公司 | Dredged sediment solidification modification streamline device |
| CN114651780B (en) * | 2022-04-26 | 2024-03-22 | 宜宾职业技术学院 | Stable rotary sedimentation and sewage discharge device and method for fecal sewage in aquaculture water |
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| CN101982425A (en) * | 2010-11-08 | 2011-03-02 | 新疆石油勘察研究设计院（有限公司） | In-tank filtering backwashing water recycle device |
| CN201842724U (en) * | 2010-11-16 | 2011-05-25 | 北京朗新明环保科技有限公司南京分公司 | Combined clarifier |
| KR101302269B1 (en) * | 2013-03-18 | 2013-09-02 | 강석웅 | Hydrocyclone concentrator |
| CN107555646A (en) * | 2016-07-01 | 2018-01-09 | 江苏巨昌环保集团有限公司 | A kind of high-efficiency cyclone sewage purification device |
| CN111762904A (en) * | 2019-04-02 | 2020-10-13 | 北京华夏壹泰科技有限公司 | High-efficiency cyclone multistage purification device for mine wastewater treatment |
| CN210030390U (en) * | 2019-04-22 | 2020-02-07 | 江苏东方生态清淤工程有限公司 | Movable slurry preparation tank |
| CN211521810U (en) * | 2019-12-26 | 2020-09-18 | 河南郑楷环保工程有限公司 | High-efficiency rotational flow sewage purifier |
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