CN114988661A - Sewage treatment equipment for sludge dewatering - Google Patents
Sewage treatment equipment for sludge dewatering Download PDFInfo
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- CN114988661A CN114988661A CN202210924417.1A CN202210924417A CN114988661A CN 114988661 A CN114988661 A CN 114988661A CN 202210924417 A CN202210924417 A CN 202210924417A CN 114988661 A CN114988661 A CN 114988661A
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- sludge
- pipe
- filter
- feeding pipe
- rod
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/17—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
- B01D33/42—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection concentrically or coaxially
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the field of sludge treatment, in particular to sewage treatment equipment for sludge dewatering, which comprises a filtering device, a feeding pipe, a pushing rod and a driving device, wherein the filtering device is used for automatically precipitating sludge in the feeding pipe after standing for a period of time, and the pushing rod slides along the feeding pipe to preliminarily extrude impurities. Under the drive of the first driving unit, the multi-layer filter discs synchronously rotate, and the centrifugal force of the sludge in different filter discs is different. Under the drive of second drive unit, make the inlet pipe rotate and at the uniform velocity rebound, the promotion pole pushes down the mud in the inlet pipe, the inlet pipe progressively upwards slides, in mud evenly discharges a plurality of filter disks, when the filter disk rotates, the centrifugal force that the mud of different particle diameter size received is different, avoids when dehydrating mud, the drainage hole jam of filter disk is blocked to the mud of particle diameter size difference, and then improves the efficiency to sludge treatment.
Description
Technical Field
The invention relates to the field of sludge treatment, in particular to sewage treatment equipment for sludge dewatering.
Background
With the enhancement of water pollution treatment in China, the sludge disposal problem is increasingly shown and valued. From sludge composting, to secondary combustion and landfill treatments. The existing sludge has high water content, so that the treatment effect is poor due to the limitation of large drying energy consumption and high cost, and secondary pollution to the environment is easily caused by discharging the sludge which is not treated well to the natural environment. The existing common mechanical drainage mode for filtering sewage is used for primary dewatering of sludge, but because the sludge is mixed with various impurities, the diameters of the impurities are different, the filter screen is extremely easy to block, and the effect of sludge dewatering and the efficiency of the blocked filter screen on sludge dewatering are reduced.
Disclosure of Invention
The invention provides sewage treatment equipment for sludge dewatering, which aims to solve the problem that a filter screen is easy to block when the existing mechanical dewatering device dewaters sludge.
The sewage treatment equipment for sludge dewatering adopts the following technical scheme:
a sewage treatment device for sludge dewatering comprises a fixed cylinder, a filtering device, a feeding pipe, a push rod and a driving device; the fixed cylinder is provided with a dehydration cavity which penetrates through the fixed cylinder from top to bottom, a first plugging plate and a second plugging plate which are used for plugging the dehydration cavity are fixedly arranged at the upper end and the lower end of the fixed cylinder, and a drain pipe is arranged on the second plugging plate; the filtering device is rotatably arranged in the dehydration cavity and comprises a plurality of layers of filtering discs, each layer of filtering disc is arranged at intervals and is fixedly connected in sequence, and the linear speeds of the layers of filtering discs are different; the feeding pipe can penetrate through the first plugging plate in a vertically sliding mode, and a feeding hole is formed in the lower end of the feeding pipe, so that impurities in the feeding pipe can enter each layer of filter disc through the feeding hole; the pushing rod can be arranged along the inner part of the feeding pipe in a sliding manner, so that when the feeding pipe slides upwards, the pushing rod is close to the lower end of the feeding pipe to extrude sludge, and the sludge is discharged from the feeding port of the feeding pipe; the driving device comprises a first driving unit and a second driving unit, wherein the first driving unit is used for driving the filter disc to rotate so as to separate water in the sludge from the sludge under the action of centrifugal force; the second driving unit is used for driving the feeding pipe to move upwards in the rotating process, so that the pushing rod pushes the sludge to flow out from the lower end of the feeding pipe.
Furthermore, the diameters of the multiple layers of filter discs of the filter device are sequentially reduced from top to bottom, so that the side walls of the multiple filter discs are of a frustum structure, and the linear velocities of the filter discs are different when the multiple filter discs are driven to rotate simultaneously;
the inlet pipe and the coaxial setting of a plurality of filter disks, and the lower extreme of inlet pipe can slide from top to bottom along the axis of a plurality of filter disks to impurity in the inlet pipe is after the quiet, and the diameter top-down of impurity increases in proper order in the inlet pipe, makes the different filter disks of the interior different impurity entering of particle size of inlet pipe.
Further, first drive unit includes first actuating lever, and first actuating lever fixed connection is in the filter disc of lower extreme, and first actuating lever is rotatable and runs through the setting of second shutoff board, and first actuating lever drives and rotates through first power supply.
Further, the second driving unit comprises a shaft sleeve, a second driving rod and a guide pipe; the shaft sleeve is rotatably sleeved between the feeding pipe and the multi-layer filter disc, and one end of the shaft sleeve is fixedly connected to the fixed cylinder; the upper end of a second driving rod is fixedly connected to the lower end of the feeding pipe, the side wall of the second driving rod is in transmission connection with the shaft sleeve, and the feeding pipe is driven by a second power source to rotate so as to slide upwards along the shaft sleeve when the feeding pipe rotates; the two ends of the guide pipe are respectively and fixedly connected to the lower end of the feed pipe and the end of the push rod, so that when the feed pipe rotates and slides upwards along the shaft sleeve, the push rod moves along the guide pipe, and the distance between the lower end of the guide pipe and the lower end of the feed pipe is reduced.
Further, the sludge pre-extrusion device comprises a pre-pressing assembly, wherein the pre-pressing assembly is a pre-pressing rod, the pre-pressing rod is arranged in the push rod in a vertically sliding mode, a first limiting part is arranged between the pre-pressing rod and the push rod and used for limiting relative movement between the pre-pressing rod and the push rod, and when the push rod slides downwards, the lower end of the push rod is used for pre-extruding sludge.
Further, the axle sleeve includes first section and second section, and first section sets up in filter disc axis department, and the second section sets up in the filter disc lower extreme, and the lateral wall and the second actuating lever threaded connection of second section to when the inlet pipe rotates, make the second actuating lever slide from top to bottom along the second section of axle sleeve.
Furthermore, the guide pipe is an elastic spiral guide pipe, the number of thread turns of the elastic spiral guide pipe is the same as that of the second section of the shaft sleeve, and the speed of the lower end of the push rod moving along the elastic spiral guide is equal to the speed of the second driving rod sliding upwards.
Further, still include the mount, the fixed disk is provided with to the mount lower part is fixed, mount upper end fixed connection in fixed section of thick bamboo lower extreme.
Furthermore, the first power source is a first motor, the first motor is fixedly arranged on the fixed disc, and a first transmission belt is arranged between a power output shaft of the first motor and the first driving rod; the second power supply is the second motor, and the second motor is fixed to be set up at first shutoff board, is provided with the second drive belt between the power take off shaft of second motor and the inlet pipe.
The invention has the beneficial effects that: the sewage treatment equipment for sludge dewatering comprises a filtering device, a feeding pipe, a pushing rod and a driving device, sludge to be treated is placed in the feeding pipe, the sludge is kept still for a period of time to be automatically precipitated in the feeding pipe, impurities with large particles in the sludge are precipitated to the lower end of the feeding pipe, the pushing rod is pressed downwards to slide along the feeding pipe, and the impurities in the feeding pipe are preliminarily extruded. The first driving unit and the second driving unit are started at the moment, the multi-layer filter discs are driven by the first driving unit to synchronously rotate, and the centrifugal force of sludge in different filter discs is different due to the fact that the linear speeds of the outermost ends of every two filter discs are different. Under the drive of second drive unit, make the inlet pipe rotate, and at the uniform velocity rebound when the pivoted, and the catch bar keeps motionless, make the catch bar promote downwards to the mud in the inlet pipe, make the inlet pipe upwards slide step by step from bottom to top, and make mud evenly discharge in a plurality of filter discs from bottom to top, then the particle diameter of the mud that gets into the lower extreme filter disc is great, the particle diameter of the mud that gets into the upper end filter disc is less, when the filter disc rotates, the centrifugal force that the mud of different particle diameter size received is different, avoid when dehydrating mud, the drainage hole jam of filter disc is blockked up to the mud of particle diameter size difference, and then improve the efficiency to sludge treatment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a sewage treatment apparatus for sludge dewatering according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is an exploded view of an embodiment of the present invention with the first power source removed;
FIG. 5 is an elevational view of the filter assembly and the first drive rod in an embodiment of the present invention;
FIG. 6 is a cross-sectional view of the connection of the filter assembly and the first drive rod in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an elastic spiral guide tube in an embodiment of the invention.
In the figure: 110. a fixed cylinder; 111. a dehydration cavity; 120. a first plugging plate; 130. a second plugging plate; 140. a drain pipe; 150. a fixed mount; 160. fixing the disc; 170. an auxiliary frame; 210. a filter tray; 220. a filter screen; 310. a feed pipe; 311. a feed inlet; 410. a push rod; 420. a piston plate; 430. a storage groove; 510. a first drive lever; 530. rotating the sleeve; 540. a shaft sleeve; 541. a first stage; 542. a second stage; 543. a feed chute; 550. a second drive lever; 560. an elastic spiral guide tube; 610. pre-pressing the rod; 620. a first limit screw; 630. a second limit screw; 640. a synchronous frame; 710. a first motor; 720. a first drive belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
An embodiment of a sewage treatment apparatus for sludge dewatering according to the present invention, as shown in fig. 1 to 7, includes a fixed cylinder 110, a filtering device, a push rod 410, a driving device, and a pre-pressing assembly. The fixed cylinder 110 has a dewatering cavity 111 penetrating up and down, the upper and lower ends of the fixed cylinder 110 are fixedly provided with a first blocking plate 120 and a second blocking plate 130 for blocking the dewatering cavity 111, and the second blocking plate 130 is provided with a drain pipe 140 so as to discharge water in sludge through the drain pipe 140. The lower end of the second blocking plate 130 is fixedly provided with a fixing frame 150, and the lower portion of the fixing frame 150 is fixedly provided with a fixing disc 160, so that the position of the fixing cylinder 110 is kept stable. The upper end of the first blocking plate 120 is fixedly provided with an auxiliary frame 170.
The filtering device is rotatably arranged in the dewatering cavity 111 and comprises a plurality of layers of filtering disks 210, the filtering disks 210 are arranged at intervals and are sequentially and fixedly connected, and the linear velocity between every two layers of filtering disks 210 is different. Specifically, each filter disc 210 is a circular structure with different sizes, the diameters of the multiple layers of filter discs 210 are sequentially reduced from top to bottom, and the side wall formed by the multiple filter discs 210 is of a frustum structure, so that the linear velocities of the edges of each filter disc 210 are different when the multiple filter discs 210 are driven to rotate simultaneously. Each filter disc 210 is coaxially arranged, the side wall of each filter disc 210 is provided with a filter screen 220 with the same filter hole size, and the filter screens 220 among the filter discs 210 are fixedly connected to ensure that the water content of the filtered sludge is basically kept consistent.
The axial center of each filter disc 210 is provided with a chute which penetrates through the filter disc up and down and has the same diameter, the feed pipe 310 penetrates through the first blocking plate 120 in a vertically slidable manner, the lower end of the feed pipe 310 is arranged in the chute in a vertically slidable manner, and the lower end of the feed pipe 310 is provided with a feed port 311, so that impurities in the feed pipe 310 enter each layer of filter disc 210 through the feed port 311. In the initial state, the sludge in the feeding pipe 310 is naturally precipitated, so that impurities with larger particles in the sludge are precipitated to the lower end of the feeding pipe 310, and then the impurities with smaller particles in the sludge are moved up to the upper end of the feeding pipe 310, and the lower end of the feeding pipe 310 is at the same level with the lowest filtering tray 210, so that the sludge in the feeding pipe 310 is distributed in the filtering trays 210 with different sizes according to the particle diameter when the sludge in the feeding pipe 310 starts to enter the multi-layer filtering tray 210 from the feeding hole 311.
The lower end of the pushing rod 410 is fixedly provided with a piston plate 420, and the piston plate 420 is slidably disposed inside the feeding pipe 310 up and down, so that when the feeding pipe 310 slides upwards, the piston plate 420 and the lower end of the feeding pipe 310 approach each other, so that the piston plate 420 extrudes the sludge and the sludge is discharged from the feeding port 311 of the feeding pipe 310 into the filter disc 210.
The driving device comprises a first driving unit and a second driving unit, wherein the first driving unit is used for driving the filter disc 210 to rotate, so that water in the sludge is separated from the sludge under the action of centrifugal force. Specifically, the first driving unit includes a first driving rod 510 and a first motor 710, the first driving rod 510 is vertically disposed, an upper end of the first driving rod 510 is fixedly connected to the lowermost filter tray 210, a middle portion of the first driving rod 510 is disposed to penetrate through the second blocking plate 130, a rotating sleeve 530 is fixedly disposed on an outer side of a lower portion of the first driving rod 510, and a lower end of the rotating sleeve 530 is rotatably connected to the fixed tray 160. The first motor 710 is fixedly connected to the fixed tray 160, and a transmission belt is disposed between a power output shaft of the first motor 710 and the rotating sleeve 530, so that when the first motor 710 is started, the power output shaft of the first motor 710 drives the first driving rod 510 to rotate, and the multi-layer filter tray 210 rotates synchronously.
The second driving unit is used to drive the feeding pipe 310 to move upwards in the process of rotation, so that the pushing rod 410 pushes the sludge to flow out from the lower end of the feeding pipe 310. Specifically, the second driving unit includes a shaft sleeve 540, a second driving rod 550 and a guide tube, the shaft sleeve 540 is rotatably disposed in the slide way, and one end of the shaft sleeve 540 is fixedly connected to the fixed disk 160. The upper end of the second driving rod 550 is fixedly connected to the lower end of the feeding tube 310, the lower portion of the second driving rod 550 is rotatably disposed inside the first driving rod 510, and the sidewall of the second driving rod 550 is drivingly connected to the shaft sleeve 540, and the feeding tube 310 is driven by the second power source to rotate, so that the feeding tube 310 slides upwards along the shaft sleeve 540 when the feeding tube 310 rotates. The guide tube has both ends fixedly connected to the inner lower end of the feed tube 310 and the piston plate 420 of the push rod 410, respectively, so that when the feed tube 310 rotates and slides upward along the shaft sleeve 540, the push rod 410 moves along the guide tube, and the distance between the piston plate 420 and the lower end of the feed tube 310 decreases. Specifically, the shaft sleeve 540 is arranged in a stepped manner, the shaft sleeve 540 is provided with a first section 541 and a second section 542, the first section 541 is rotatably arranged in the slideway and is rotatably arranged outside the feeding pipe 310, the side wall of the first section 541 is provided with a plurality of feeding grooves 543 arranged at intervals, and the feeding grooves 543 are arranged corresponding to the multi-layer filtering plate, so that when the feeding port 311 at the lower end of the feeding pipe 310 corresponds to the feeding grooves 543 of the first section 541, sludge enters the filtering plate 210. The second section 542 is disposed at the lower end of the filter tray 210, the sidewall of the second section 542 is sleeved between the second driving rod 550 and the first driving rod 510, the outer sidewall of the second section 542 is rotatably connected to the first driving rod 510, the inner sidewall of the second section 542 is in threaded connection with the second driving rod 550, the lower end of the second section 542 is fixedly connected to the fixed tray 160, and the second section 542 is fixedly connected to the first section 541, so that when the feeding pipe 310 rotates, the second driving rod 550 slides up and down along the second section 542 of the shaft sleeve 540. Further, the push rod 410 is provided therein with a receiving groove 430 axially arranged along the push rod 410, and a slider is arranged on a lower end side wall of the receiving groove 430. The guide pipe is an elastic spiral guide pipe 560, the number of thread turns of the elastic spiral guide pipe 560 is the same as that of the second section 542 of the shaft sleeve 540, so that the moving speed of the slider at the lower end of the push rod 410 along the elastic spiral guide pipe 560 is equal to the upward sliding speed of the second driving rod 550, the amount of sludge entering the multi-layer filter discs 210 is kept stable, and when the feed pipe 310 moves to the uppermost filter disc 210, the feed pipe 310 contacts with the push rod 410, so that the elastic spiral guide pipe 560 moves to the accommodating groove 430 of the push rod 410.
In this embodiment, the pre-pressing component is a pre-pressing rod 610, the upper end of the pre-pressing rod 610 is slidably connected to the auxiliary frame 170 up and down, the lower end of the pre-pressing rod 610 is slidably disposed in the pushing rod 410 up and down, a first limiting member is disposed between the pre-pressing rod 610 and the pushing rod 410, and the first limiting member is used for limiting the relative movement between the pre-pressing rod 610 and the pushing rod 410, so that when the pushing rod 410 slides down, the lower end of the pushing rod 410 performs pre-pressing treatment on sludge. Specifically, the lower end of the pre-pressing rod 610 is slidably disposed in the accommodating groove 430, the first limiting member is a first limiting screw 620, the first limiting screw 620 is in threaded connection with the sidewall of the push rod 410, so that the pre-pressing rod 610 is fixedly connected with the push rod 410 when the first limiting screw 620 is screwed down, and when the pre-pressing rod 610 is pushed to slide downwards, the piston plate 420 at the lower end of the push rod 410 is made to slide downwards, thereby changing the thread pitch of the elastic spiral guide tube 560 disposed between the piston plate 420 and the inner lower end of the feeding tube 310, but the number of thread turns of the elastic spiral guide tube 560 remains unchanged.
In this embodiment, the present invention further includes a second limiting member, the second limiting member includes a second limiting screw 630 and a synchronization frame 640, the synchronization frame 640 is rotatably disposed on the pre-pressing rod 610, the synchronization frame 640 enables the fixing frame 150 to be fixedly connected with the sidewall of the feeding tube 310 through the limiting of the second limiting screw 630, so that the pre-pressing rod 610 and the feeding tube 310 are axially and fixedly disposed, so as to drive the pre-pressing rod 610 to synchronously slide upwards in the process that the feeding tube 310 moves upwards, so that the pre-pressing rod 610 slides upwards in the accommodating groove 430, and a space is reserved for the elastic spiral guiding tube 560 to enter the accommodating groove 430.
In this embodiment, the first power source is a first motor 710, the first motor 710 is fixedly disposed on the fixed tray 160, and a first transmission belt 720 is disposed between a power output shaft of the first motor 710 and the first driving rod 510. The second power source is a second motor, the second motor is fixedly arranged on the first blocking plate 120, a second transmission belt is arranged between a power output shaft of the second motor and the feeding pipe 310, and the second transmission belt can slide up and down along the outer side edge of the feeding pipe 310.
With the above embodiments, the usage principle and working process of the present invention are as follows:
during operation, put into the inlet pipe 310 with mud in, and static a period, make mud carry out the natural sedimentation in inlet pipe 310, the great mud of particle diameter deposits to the lower extreme of inlet pipe 310, the less mud of particle diameter removes the upper end to inlet pipe 310, will fix depression bar 610 and catch bar 410 through first stop screw 620 this moment, and through exerting certain pressure to depression bar 610, carry out preliminary extrusion treatment to the mud in the inlet pipe 310, discharge a large amount of impurity that contains in the mud.
When sludge is pre-extruded, the thread space between the lower end of the push rod 410 and the elastic spiral guide tube 560 at the lower end of the interior of the feed pipe 310 is changed, but the total number of thread turns of the elastic spiral guide tube 560 is kept unchanged. The first limiting screw 620 is released at this time so that the relative sliding between the pushing rod 410 and the pre-pressing rod 610 can occur, and the feeding tube 310 and the pre-pressing rod 610 are slid up and down synchronously by the synchronizing frame 640 by tightening the second limiting screw 630 at this time.
The first motor 710 and the second motor are started, the power output shaft of the first motor 710 is in transmission connection with the rotating sleeve 530 through the first transmission belt 720, the rotating sleeve 530 is fixedly connected with the first driving rod 510, the upper end of the first driving rod 510 is fixedly connected to the filter disc 210 at the lowest end, and the plurality of filter discs 210 are driven by the first motor 710 to rotate synchronously. Since the diameters of the filter discs 210 decrease from top to bottom, the angular velocities of the filter discs 210 are consistent, but the linear velocities of the edges of the filter discs 210 are different. The power output shaft of the second motor is in transmission connection with the feeding pipe 310 through a second transmission belt, and the second transmission belt can slide up and down along the outer side edge of the feeding pipe 310. Because the lower end of the feeding pipe 310 is fixedly provided with the second driving rod 550, the second driving rod 550 can be rotatably arranged inside the first driving rod 510, and the second section 542 of the shaft sleeve 540 is arranged between the second driving rod 550 and the first driving rod 510, the lower end of the second section 542 of the shaft sleeve 540 is fixedly connected to the fixed disk 160, the outer side wall of the second section 542 of the shaft sleeve 540 is rotatably connected with the first driving rod 510, the inner side wall of the second section 542 of the shaft sleeve 540 is in threaded transmission connection with the first driving rod 510, and the number of thread turns between the second section 542 of the shaft sleeve 540 and the first driving rod 510 is consistent with the number of thread turns of the elastic spiral guide pipe 560. When the second motor drives the feed pipe 310 to rotate, the feed pipe 310 is rotated while sliding upward. Because the lower end of the elastic spiral guide pipe 560 is fixedly connected to the lower end of the interior of the feeding pipe 310, in the process that the feeding pipe 310 rotates and moves upwards, the elastic spiral guide pipe 560 synchronously rotates, the upper end of the elastic spiral guide pipe 560 is in sliding connection with the slide block on the side wall of the receiving groove 430 at the lower end of the push rod 410, so that the elastic spiral guide pipe 560 gradually slides into the receiving groove 430, at the moment, the lower end of the push rod 410 is gradually close to the lower end of the feeding pipe 310 to extrude the sludge in the feeding pipe 310, so that the sludge is gradually discharged from the feeding port 311 at the lower end of the feeding pipe 310 and uniformly enters the multi-layer filter disc 210, because the particle diameter of the sludge entering the filter disc 210 at the lowest end is larger, and the linear velocity at the edge filter screen 220 of the filter disc 210 at the lowest end is smaller, the centrifugal force applied to the sludge with larger particles in the filter disc 210 at the lowest end is smaller, and because the gap among the sludge with larger particle diameter is larger, so that the water in the sludge can be separated from the sludge under the action of smaller centrifugal force.
Since the number of turns of the second section 542 of the sleeve 540 between the first driving rod 510 is the same as the number of turns of the elastic spiral guide tube 560, the lower end of the feeding tube 310 is in contact with the lower end of the pushing rod 410 when the lower end of the feeding tube 310 moves to the uppermost filter tray 210 as the feeding tube 310 rotates, and the sludge with smaller particle diameter is discharged into the uppermost filter tray 210, the linear velocity of the filter screen 220 at the edge of the filter tray 210 is the largest due to the largest diameter of the uppermost filter tray 210, so that the sludge with smaller particle diameter is subjected to a larger centrifugal force in the uppermost filter tray 210, and the moisture in the sludge is separated from the sludge, and the sludge can be uniformly distributed on the sidewall of the uppermost filter tray 210 due to the largest area of the sidewall of the uppermost filter tray 210, so that the filter tray 210 is not easily clogged.
The water discharged from the sludge is discharged through the drain pipe 140 opened at the first closure plate 120 at the lower end of the fixed cylinder 110.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A sewage treatment device for sludge dewatering is characterized in that: the method comprises the following steps:
the device comprises a fixed cylinder, a water outlet pipe and a water outlet pipe, wherein the fixed cylinder is provided with a dewatering cavity which penetrates through the fixed cylinder from top to bottom, a first plugging plate and a second plugging plate which are used for plugging the dewatering cavity are fixedly arranged at the upper end and the lower end of the fixed cylinder, and a water outlet pipe is arranged on the second plugging plate;
the filtering device is rotatably arranged in the dehydration cavity and comprises a plurality of layers of filtering discs, each layer of filtering disc is arranged at intervals and is fixedly connected in sequence, and the linear speeds of the layers of filtering discs are different;
the feeding pipe can penetrate through the first plugging plate in a vertically sliding mode, and a feeding hole is formed in the lower end of the feeding pipe, so that impurities in the feeding pipe can enter each layer of filter disc through the feeding hole;
the pushing rod can be arranged along the interior of the feeding pipe in a sliding mode, so that when the feeding pipe slides upwards, the pushing rod is close to the lower end of the feeding pipe, sludge is extruded, and the sludge is discharged from the feeding hole of the feeding pipe;
the driving device comprises a first driving unit and a second driving unit, and the first driving unit is used for driving the filter disc to rotate so as to separate water in the sludge from the sludge under the action of centrifugal force; the second driving unit is used for driving the feeding pipe to move upwards in the rotating process, so that the pushing rod pushes the sludge to flow out from the lower end of the feeding pipe.
2. The sewage treatment apparatus for sludge dewatering according to claim 1, characterized in that: the diameters of the multiple layers of filter discs of the filter device are sequentially reduced from top to bottom, so that the side walls of the multiple filter discs are of frustum structures, and the linear velocities of the filter discs are different when the multiple filter discs are driven to rotate simultaneously;
the inlet pipe and the coaxial setting of a plurality of filter disks, and the lower extreme of inlet pipe can slide from top to bottom along the axis of a plurality of filter disks to impurity in the inlet pipe is after the quiet, and the diameter top-down of impurity increases in proper order in the inlet pipe, makes the different filter disks of the interior different impurity entering of particle size of inlet pipe.
3. The sewage treatment apparatus for sludge dewatering according to claim 1, characterized in that: first drive unit includes first actuating lever, first actuating lever fixed connection in the filter disc of bottom, and first actuating lever is rotatable and runs through the setting of second shutoff board, and first actuating lever drives and rotates through first power supply.
4. The sewage treatment apparatus for sludge dewatering according to claim 1, characterized in that: the second driving unit comprises a shaft sleeve, a second driving rod and a guide pipe; the shaft sleeve is rotatably sleeved between the feeding pipe and the multi-layer filter disc, and one end of the shaft sleeve is fixedly connected to the fixed cylinder; the upper end of a second driving rod is fixedly connected to the lower end of the feeding pipe, the side wall of the second driving rod is in transmission connection with the shaft sleeve, and the feeding pipe is driven by a second power source to rotate so as to slide upwards along the shaft sleeve when the feeding pipe rotates; the two ends of the guide pipe are respectively and fixedly connected to the lower end of the feed pipe and the end of the push rod, so that when the feed pipe rotates and slides upwards along the shaft sleeve, the push rod moves along the guide pipe, and the distance between the lower end of the guide pipe and the lower end of the feed pipe is reduced.
5. The sewage treatment apparatus for sludge dewatering according to claim 4, characterized in that: the sludge pre-extrusion device is characterized by further comprising a pre-pressing assembly, the pre-pressing assembly is a pre-pressing rod, the pre-pressing rod can be arranged in the push rod in a vertically sliding mode, a first limiting part is arranged between the pre-pressing rod and the push rod and used for limiting relative movement between the pre-pressing rod and the push rod, and when the push rod slides downwards, the lower end of the push rod is used for pre-extruding sludge.
6. The sewage treatment apparatus for sludge dewatering according to claim 5, characterized in that: the shaft sleeve comprises a first section and a second section, the first section is arranged at the axis of the filter disc, the second section is arranged at the lower end of the filter disc, and the side wall of the second section is in threaded connection with the second driving rod, so that the second driving rod slides up and down along the second section of the shaft sleeve when the feeding pipe rotates.
7. The sewage treatment apparatus for sludge dewatering according to claim 6, characterized in that: the guide pipe is an elastic spiral guide pipe, the number of thread turns of the elastic spiral guide pipe is the same as that of the second section of the shaft sleeve, and the speed of the lower end of the push rod moving along the elastic spiral guide is equal to the speed of the second driving rod sliding upwards.
8. The sewage treatment apparatus for sludge dewatering according to claim 1, characterized in that: the fixing device is characterized by further comprising a fixing frame, a fixing disc is fixedly arranged on the lower portion of the fixing frame, and the upper end of the fixing frame is fixedly connected to the lower end of the fixing cylinder.
9. The sewage treatment apparatus for sludge dewatering according to any one of claims 1 to 8, characterized in that: the first power source is a first motor, the first motor is fixedly arranged on the fixed disc, and a first transmission belt is arranged between a power output shaft of the first motor and the first driving rod; the second power supply is the second motor, and the second motor is fixed to be set up at first shutoff board, is provided with the second drive belt between the power take off shaft of second motor and the inlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210924417.1A CN114988661B (en) | 2022-08-03 | 2022-08-03 | Sewage treatment equipment for sludge dewatering |
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| CN202210924417.1A CN114988661B (en) | 2022-08-03 | 2022-08-03 | Sewage treatment equipment for sludge dewatering |
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| CN114988661A true CN114988661A (en) | 2022-09-02 |
| CN114988661B CN114988661B (en) | 2022-10-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117959816A (en) * | 2024-04-01 | 2024-05-03 | 山西省建筑科学研究院集团有限公司 | Novel filter for adhesive |
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| CN114988661B (en) | 2022-10-25 |
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