CN108409101B - Centrifugal sludge dewatering device - Google Patents
Centrifugal sludge dewatering device Download PDFInfo
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- CN108409101B CN108409101B CN201810476569.3A CN201810476569A CN108409101B CN 108409101 B CN108409101 B CN 108409101B CN 201810476569 A CN201810476569 A CN 201810476569A CN 108409101 B CN108409101 B CN 108409101B
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- driving motor
- stirring
- centrifugal
- shaft
- shell
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Centrifugal Separators (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention aims to provide a centrifugal sludge dewatering device which comprises a shell, a base, a centrifugal cylinder, a stirring mechanism, a first driving motor and a second driving motor, wherein the base is arranged on the shell; the shell is of a cylindrical structure, the shell is reversely buckled on the base in a mode that the bottom of the shell faces upwards, the centrifugal cylinder is coaxially arranged in the shell, and the centrifugal cylinder is fixedly arranged on the base in a rotatable mode; the stirring mechanism comprises an upper driving shaft, an installation box, two third driving motors, two transverse stirring shafts and a longitudinal stirring shaft; can carry out abundant dehydration to mud for can reach the moisture standard of regulation after the sludge dewatering handles, thereby do benefit to the subsequent processing and use, do benefit to the environmental protection, do benefit to the miniaturization moreover, facilitate the use.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to a centrifugal sludge dewatering device.
Background
With the aggravation of human production activities, a large amount of sewage is generated in the production activities, flocculation and sedimentation are required to be carried out in the sewage treatment process to form sludge, and the sludge contains more than 95% of water, so that the sludge needs to be dewatered for environmental protection, and the existing sludge dewatering equipment has the following defects: the existing sludge dewatering equipment adopts modes such as press dewatering and centrifugal dewatering, wherein the press dewatering can be fully dewatered, but the structure is complex, the equipment is large in size and high in use cost, and is not beneficial to miniaturized sludge treatment, while the existing centrifugal dewatering is beneficial to miniaturized sludge dewatering treatment, but the existing sludge dewatering equipment cannot fully dewater, the water content of the treated sludge is still higher than the specified standard, and when the sludge is directly buried and composted, the environmental impact is large, and the environmental protection is not good.
Therefore, in order to solve the above technical problems, a new centrifugal sludge dewatering device needs to be provided.
Disclosure of Invention
In view of the above, the present invention provides a centrifugal sludge dewatering device, which can dewater sludge sufficiently to reach a specified water content standard after the sludge dewatering treatment, so as to facilitate subsequent treatment and application, protect environment, facilitate miniaturization, and facilitate use.
The invention aims to provide a centrifugal sludge dewatering device which comprises a shell, a base, a centrifugal cylinder, a stirring mechanism, a first driving motor and a second driving motor, wherein the base is arranged on the shell;
the shell is of a cylindrical structure, the shell is reversely buckled on the base in a mode that the bottom of the shell faces upwards, the centrifugal cylinder is coaxially arranged in the shell and fixedly arranged on the base in a rotatable mode, and the second driving motor drives the centrifugal cylinder to rotate;
the stirring mechanism comprises an upper driving shaft, an installation box, two third driving motors, two transverse stirring shafts and a longitudinal stirring shaft;
the upper end of the upper driving shaft extends out of the bottom of the shell and is in transmission connection with a first driving motor, the lower end of the upper driving shaft extends into the middle of the centrifugal cylinder and is fixedly connected with the outer side wall of the box cover of the installation box, the upper end of the longitudinal stirring shaft is fixedly connected with the outer side wall of the bottom of the box body of the installation box, the lower end of the longitudinal stirring shaft is a free end, the upper driving shaft and the longitudinal stirring shaft are coaxially arranged, and the side wall of the longitudinal stirring shaft is provided with a spiral stirring paddle;
the two third driving motors are arranged in the installation box, the power output directions of the two third driving motors are opposite, one ends of the two transverse stirring shafts are respectively in transmission connection with the two third driving motors, the other ends of the two transverse stirring shafts horizontally extend out of the side wall of the installation box to the centrifugal cylinder, and the extending ends of the two transverse stirring shafts are respectively provided with a plate-shaped stirring blade.
Further, the spiral radius of the spiral stirring paddle on the longitudinal stirring shaft is gradually reduced from bottom to top.
Furthermore, each transverse stirring shaft is provided with two platy stirring blades, the two platy stirring blades of the same transverse stirring shaft are obliquely arranged, and the two platy stirring blades are symmetrically arranged by taking the axis of the transverse stirring shaft as a symmetry axis.
Further, the rotation directions of the two third driving motors are opposite.
Further, the rotation directions of the first driving motor and the second driving motor are opposite.
Further, the centrifugal sludge dewatering device operates as follows:
s1, in the sludge injection process, a first driving motor acts, and a second driving motor and a third driving motor do not act, so that sludge does not settle at the bottom of a centrifugal cylinder in the sludge injection process;
s2, after the sludge injection is finished, the first driving motor and the third driving motor simultaneously act to fully stir the sludge in the centrifugal cylinder;
s3, after the first driving motor and the third driving motor jointly act for a set time A, the second driving motor acts to carry out centrifugal dehydration, and the rotating speed of the first driving motor is gradually reduced to a set rotating speed R when the second driving motor starts to act;
s4, after the second driving motor acts for the set time B, reducing the rotating speed of the second driving motor, increasing the rotating speed of the first driving motor, and keeping the set time C;
s5, increasing the rotating speed of the second driving motor and controlling the first driving motor to keep at the rotating speed R after the time C is reached;
repeating steps S1 to S5 until centrifugal dewatering is completed.
Further, the base be provided with cyclic annular boss, the upper surface of cyclic annular boss sinks and forms the ring channel, be provided with the ball in the ring channel, be provided with the ball retaining plate on the cyclic annular boss, ball retaining plate top is provided with the layer board, the lower surface of layer board is provided with the ball groove, the ball groove just right with the ring channel and the ball imbeds respectively in ring channel and ball inslot.
Further, the ball holding plate is provided with a plurality of ball holes, the diameter of which is larger than that of the balls, and the ball holes are uniformly arranged in the circumferential direction of the ball holding plate.
Furthermore, a flange plate is fixedly arranged on the outer side of the bottom of the centrifugal cylinder, a transmission shaft is fixedly arranged on the lower surface of the flange plate, the transmission shaft and the centrifugal cylinder are coaxially arranged, and the power input end of the transmission shaft is in transmission connection with a second driving motor.
Further, layer board, ball keep plate and base are provided with the hole of stepping down that is used for stepping down to the transmission shaft.
The invention has the beneficial effects that: according to the invention, the spiral stirring paddle and the transverse stirring paddle are used for stirring in different directions, so that on one hand, the sludge can be effectively prevented from settling during feeding and being incapable of being fully dehydrated, and on the other hand, the sludge can be fully dehydrated through stirring in the centrifugal dehydration process, so that the sludge can reach the specified water content standard after dehydration treatment, and therefore, the sludge dewatering treatment method is beneficial to subsequent treatment application, environmental protection, sludge treatment miniaturization and convenience in use.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the base structure of the present invention.
Fig. 3 is a schematic structural diagram of a pallet of the present invention.
FIG. 4 is a schematic diagram of a ball retainer plate structure according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings, in which:
the invention aims to provide a centrifugal sludge dewatering device, which comprises a shell 5, a base 14, a centrifugal cylinder 4, a stirring mechanism, a first driving motor 1 and a second driving motor 11;
the shell 5 is a cylindrical structure, the shell 5 is reversely buckled on the base 14 in a mode that the bottom of the shell faces upwards, the centrifugal cylinder 4 is coaxially arranged in the shell, the centrifugal cylinder 14 is fixedly arranged on the base 14 in a rotatable mode, and the second driving motor 11 drives the centrifugal cylinder 14 to rotate;
the stirring mechanism comprises an upper driving shaft 3, a mounting box 18, two third driving motors 22, two transverse stirring shafts 20 and a longitudinal stirring shaft 6;
the upper end of the upper driving shaft 3 extends out of the bottom of the shell 5 and is in transmission connection with the first driving motor 1, the lower end of the upper driving shaft 3 extends into the middle of the centrifugal cylinder 4 and is fixedly connected with the outer side wall of the box cover of the mounting box 18, the upper end of the longitudinal stirring shaft 6 is fixedly connected with the outer side wall of the bottom of the box body of the mounting box 18, the lower end of the longitudinal stirring shaft 6 is a free end, the upper driving shaft 3 and the longitudinal stirring shaft 6 are coaxially arranged, and for the rotation stability of a stirring structure, the mounting box is also in a cylindrical structure and is coaxial with the upper driving shaft and the longitudinal stirring; the side wall of the longitudinal stirring shaft 6 is provided with a spiral stirring paddle 7; the mounting box is made of the existing heat conducting materials, such as heat conducting metal materials, heat conducting alloy materials or heat conducting polymer materials, and on one hand, the mounting box is used for mounting and fixing the motor and the transverse stirring shaft, and also plays a role in power transmission and transmits power to the longitudinal stirring shaft from the upper connecting shaft;
the two third driving motors 22 are arranged in the installation box, the power output directions of the two third driving motors 22 are opposite, one ends of the two transverse stirring shafts 20 are respectively in transmission connection with the two third driving motors 22, the other ends of the two transverse stirring shafts 20 horizontally extend out of the side wall of the installation box 18 to the centrifugal cylinder 4, the extending ends of the two transverse stirring shafts 20 are respectively provided with a plate-shaped stirring blade 19, the transmission connection modes of the first driving motor, the second driving motor and the third driving motor are the same and are connected through the existing speed reduction transmission mechanisms (2,21,12), wherein the speed reduction transmission mechanisms comprise a speed reducer and a coupling, the speed reducer and the connecting shaft belong to the prior art and are not described herein, wherein the device is further provided with a feeding cylinder 23, the feeding cylinder 23 extends into the centrifugal cylinder 4 from the bottom of the shell 5, a water outlet 8 is arranged on the side wall of one end of the shell 5 connected with the base 14, and a discharge outlet 17 is arranged on the side wall of the bottom of the centrifugal cylinder 4, wherein the discharge outlet is closed in the dehydration process, and the shell and the base are detachably connected through bolts, so that the shell and the base are favorable for overhauling on one hand and discharging dehydrated sludge on the other hand; according to the invention, the stirring of the spiral stirring paddle and the transverse stirring paddle in different directions is utilized, so that on one hand, the sludge can be effectively prevented from settling and being incapable of being fully dehydrated during feeding, and on the other hand, the sludge can be fully dehydrated further by stirring in the centrifugal dehydration process, so that the sludge can reach the specified water content standard after dehydration treatment, thereby being beneficial to subsequent treatment application, being beneficial to environmental protection, being beneficial to sludge treatment miniaturization and being convenient to use.
In this embodiment, the helix radius from the bottom up of the spiral stirring rake 7 on the longitudinal stirring shaft 6 reduces gradually, and through this kind of structure, on the one hand, utilize the stirring rake of spiral to carry out horizontal stirring, and on the other hand, the above-mentioned structure that utilizes the spiral stirring rake rolls mud from top to bottom to ensure the sufficiency of stirring.
In this embodiment, each transverse stirring shaft 20 is provided with two plate-shaped stirring blades 19, the two plate-shaped stirring blades 19 of the same transverse stirring shaft 20 are obliquely arranged, the two plate-shaped stirring blades 19 are symmetrically arranged with the axis of the transverse stirring shaft 20 as a symmetry axis, the axis of the transverse stirring shaft is parallel to the plate surface extending direction of the plate-shaped stirring blades, and the rotation directions of the two third driving motors 22 are opposite, that is, the rotation directions of the two transverse stirring shafts are opposite.
In this embodiment, the rotation directions of the first driving motor 1 and the second driving motor 11 are opposite, and in the centrifugal dewatering process, if the rotation directions of the first driving motor and the second driving motor are the same, the sludge cannot be sufficiently stirred, so that the dewatering effect is affected.
In this embodiment, the base 14 is provided with the annular boss 15, the upper surface of the annular boss 15 sinks to form the annular groove 27, the ball 16 is arranged in the annular groove 27, the ball retaining plate 10 is arranged on the annular boss 15, the supporting plate 9 is arranged above the ball retaining plate 10, the ball groove 24 is arranged on the lower surface of the supporting plate 9, the ball groove 24 is opposite to the annular groove 27, and the ball 16 is respectively embedded in the annular groove and the ball groove, by virtue of the structure, the centrifugal cylinder is favorably mounted, so that the weight of the centrifugal cylinder is prevented from being completely born by the driving shaft, the normal operation of the whole device can be ensured, and in the structure, the resistance born by the centrifugal cylinder can be effectively reduced, and the centrifugal dehydration effect can be ensured, wherein the bottom of the centrifugal cylinder is fixedly connected with the upper surface of the supporting plate, and the bolt connection mode is limitedly adopted, the disassembly and maintenance are convenient, and of course, a welding mode can be directly adopted.
In this embodiment, the ball holding plate 10 is provided with a plurality of ball holes 26, the diameter of the ball holes 26 is larger than that of the balls 16, and the ball holes 26 are uniformly arranged along the circumferential direction of the ball holding plate, so that the phenomenon of clamping stagnation caused by mutual contact of the balls can be effectively prevented, and the smoothness of rotation of the centrifuge tube can be ensured.
In this embodiment, the fixed ring flange 28 that is provided with in the bottom outside of centrifuge bowl 4, the fixed transmission shaft 13 that is provided with of lower surface of ring flange 28, transmission shaft 13 is connected with the transmission of centrifuge bowl 4 coaxial arrangement and the power input end of transmission shaft and second driving motor 11, layer board 9, ball retaining plate 10 and base 14 are provided with the hole 25 of stepping down that is used for stepping down to transmission shaft 13, through this kind of structure, do benefit to and carry out the transmission with second driving motor with centrifuge bowl and be connected, ensure the smoothness nature and the stability of device operation.
In this embodiment, the centrifugal sludge dewatering device operates as follows:
s1, in the sludge injection process, a first driving motor acts, and a second driving motor and a third driving motor do not act, so that sludge does not settle at the bottom of a centrifugal cylinder in the sludge injection process;
s2, after the sludge injection is finished, the first driving motor and the third driving motor simultaneously act to fully stir the sludge in the centrifugal cylinder; in this step, the uniformity of the sludge is further ensured, thereby facilitating the dehydration,
s3, after the first driving motor and the third driving motor jointly act for a set time A, the second driving motor acts to carry out centrifugal dehydration, and the rotating speed of the first driving motor is gradually reduced to a set rotating speed R when the second driving motor starts to act; by the mode, the blocking effect of the stirring mechanism on sludge in the centrifugal cylinder can be effectively reduced, full dehydration can be ensured, and on the other hand, the second driving motor and the third driving motor are still in a rotating state and are also rolled and stirred in the dehydration process, so that the phenomenon that sedimentation is formed in the axis area of the centrifugal cylinder to influence dehydration is reduced, and the phenomenon that excessive aggregation is formed in the wall area of the centrifugal cylinder to influence the dehydration effect can be reduced;
s4, after the second driving motor acts for the set time B, reducing the rotating speed of the second driving motor, increasing the rotating speed of the first driving motor, and keeping the set time C; in the centrifugal dehydration process, the sludge still forms sedimentation and aggregation in the wall area of the centrifugal cylinder and the vicinity of the axis area of the centrifugal cylinder, so that the dehydration sufficiency is influenced, in the step, the aggregation of the sludge to the wall area is reduced by reducing the rotating speed of the centrifugal cylinder, and the uniformity of the sludge in the current state is ensured under the high-speed stirring of the stirring mechanism, so that the re-dehydration is facilitated;
s5, increasing the rotating speed of the second driving motor and controlling the first driving motor to keep at the rotating speed R after the time C is reached;
and repeating the steps S1 to S5 until the centrifugal dehydration is completed, wherein the number of times of repeating the steps S1 to S5 is set according to practical situations, such as the property of the sludge, tax-containing standard of the dehydrated sludge and the like, wherein the time A, B and the time C can be set to be equal or unequal and are set according to practical requirements.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (3)
1. The utility model provides a centrifugal sludge dewatering device which characterized in that: comprises a shell, a base, a centrifugal cylinder, a stirring mechanism, a first driving motor and a second driving motor;
the shell is of a cylindrical structure, the shell is reversely buckled on the base in a mode that the bottom of the shell faces upwards, the centrifugal cylinder is coaxially arranged in the shell and fixedly arranged on the base in a rotatable mode, and the second driving motor drives the centrifugal cylinder to rotate;
the stirring mechanism comprises an upper driving shaft, an installation box, two third driving motors, two transverse stirring shafts and a longitudinal stirring shaft;
the upper end of the upper driving shaft extends out of the bottom of the shell and is in transmission connection with a first driving motor, the lower end of the upper driving shaft extends into the middle of the centrifugal cylinder and is fixedly connected with the outer side wall of the box cover of the installation box, the upper end of the longitudinal stirring shaft is fixedly connected with the outer side wall of the bottom of the box body of the installation box, the lower end of the longitudinal stirring shaft is a free end, the upper driving shaft and the longitudinal stirring shaft are coaxially arranged, and the side wall of the longitudinal stirring shaft is provided with a spiral stirring paddle;
the two third driving motors are arranged in the installation box, the power output directions of the two third driving motors are opposite, one ends of the two transverse stirring shafts are respectively in transmission connection with the two third driving motors, the other ends of the two transverse stirring shafts horizontally extend out of the side wall of the installation box to the centrifugal cylinder, and the extending ends of the two transverse stirring shafts are respectively provided with a plate-shaped stirring blade;
the radius of a spiral line of a spiral stirring paddle on the longitudinal stirring shaft is gradually reduced from bottom to top;
the centrifugal sludge dewatering device operates according to the following modes:
s1, in the sludge injection process, a first driving motor acts, and a second driving motor and a third driving motor do not act, so that sludge does not settle at the bottom of a centrifugal cylinder in the sludge injection process;
s2, after the sludge injection is finished, the first driving motor and the third driving motor simultaneously act to fully stir the sludge in the centrifugal cylinder;
s3, after the first driving motor and the third driving motor jointly act for a set time A, the second driving motor acts to carry out centrifugal dehydration, and the rotating speed of the first driving motor is gradually reduced to a set rotating speed R when the second driving motor starts to act;
s4, after the second driving motor acts for the set time B, reducing the rotating speed of the second driving motor, increasing the rotating speed of the first driving motor, and keeping the set time C;
s5, increasing the rotating speed of the second driving motor and controlling the first driving motor to keep at the rotating speed R after the time C is reached;
repeating the steps S1 to S5 until centrifugal dehydration is completed;
two platy stirring blades are arranged on each transverse stirring shaft, the two platy stirring blades of the same transverse stirring shaft are obliquely arranged, and the two platy stirring blades are symmetrically arranged by taking the axis of the transverse stirring shaft as a symmetry axis;
the rotation directions of the two third driving motors are opposite;
the first driving motor and the second driving motor rotate in opposite directions;
the base is provided with an annular boss, the upper surface of the annular boss sinks to form an annular groove, balls are arranged in the annular groove, a ball retaining plate is arranged on the annular boss, a supporting plate is arranged above the ball retaining plate, a ball groove is arranged on the lower surface of the supporting plate, the ball groove is opposite to the annular groove, and the balls are respectively embedded into the annular groove and the ball groove;
the ball holding plate is provided with a plurality of ball holes, the diameters of the ball holes are larger than those of the balls, and the ball holes are uniformly arranged along the circumferential direction of the ball holding plate.
2. The centrifugal sludge dewatering device of claim 1, wherein: the centrifugal cylinder is characterized in that a flange plate is fixedly arranged on the outer side of the bottom of the centrifugal cylinder, a transmission shaft is fixedly arranged on the lower surface of the flange plate, the transmission shaft and the centrifugal cylinder are coaxially arranged, and the power input end of the transmission shaft is in transmission connection with a second driving motor.
3. The centrifugal sludge dewatering device of claim 1, wherein: the supporting plate, the ball retaining plate and the base are provided with yielding holes used for yielding the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476569.3A CN108409101B (en) | 2018-05-17 | 2018-05-17 | Centrifugal sludge dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476569.3A CN108409101B (en) | 2018-05-17 | 2018-05-17 | Centrifugal sludge dewatering device |
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| Publication Number | Publication Date |
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| CN108409101A CN108409101A (en) | 2018-08-17 |
| CN108409101B true CN108409101B (en) | 2020-08-28 |
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| CN201810476569.3A Expired - Fee Related CN108409101B (en) | 2018-05-17 | 2018-05-17 | Centrifugal sludge dewatering device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127673A (en) * | 2018-09-21 | 2019-01-04 | 深圳市伟绿达科技有限公司 | A kind of film slag abatement system |
| CN109007539A (en) * | 2018-09-26 | 2018-12-18 | 安徽朱隆记食品有限公司 | A kind of soy sauce production material cooking device |
| CN109179627B (en) * | 2018-10-29 | 2024-04-19 | 河北雄安德荫源环境科技有限公司 | Centrifugal sewage treatment device and sewage treatment system |
| CN109250888A (en) * | 2018-11-21 | 2019-01-22 | 璁稿嘲 | A kind of sludge treatment equipment |
| CN112358044A (en) * | 2020-10-29 | 2021-02-12 | 江苏理文造纸有限公司 | Anaerobic reactor with anticorrosive function |
| CN115321765A (en) * | 2022-08-04 | 2022-11-11 | 靖江市华晟重金属防控有限公司 | Sludge dewatering device for sewage treatment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207085779U (en) * | 2017-07-12 | 2018-03-13 | 厦门市瑞思医药科技有限公司 | A kind of agitating device applied to sticky material mixing |
| CN107512798A (en) * | 2017-09-11 | 2017-12-26 | 广州林腾生物科技有限公司 | A kind of continuous water treatment facilities of block-resistant type |
| CN107970795A (en) * | 2017-12-11 | 2018-05-01 | 大连百达开成不动产咨询有限公司 | The horizontal agitating device of milk of lime agitator tank |
| CN108033664A (en) * | 2017-12-13 | 2018-05-15 | 天津中天精科科技有限公司 | A kind of basket centrifuges formula sludge dewatering environment-friendly processing unit |
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2018
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