CN115321781A

CN115321781A - Device for sludge dewatering

Info

Publication number: CN115321781A
Application number: CN202211248068.2A
Authority: CN
Inventors: 庄淑星
Original assignee: Nantong Aidong Petrochemical Equipment Manufacturing Co ltd
Current assignee: Nantong Aidong Petrochemical Equipment Manufacturing Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2022-11-11
Anticipated expiration: 2042-10-12
Also published as: CN115321781B

Abstract

The invention relates to the technical field of sludge treatment, in particular to a device for sludge dewatering. A device for sludge dewatering comprises a shell, a drying mechanism, a flushing compression piece, a rotary ring, an adjusting mechanism and a driving mechanism. The spin-drying mechanism comprises a filter screen, a first spiral groove and a second spiral groove. The flushing compression piece can be arranged in the filter screen along the axis of the filter screen in a vertically moving mode, a first sliding block is arranged on the outer peripheral wall of the flushing compression piece, and the rotating ring is rotatably arranged in the flushing compression piece. The invention provides a device for sludge dewatering, which aims to solve the problems that a dewatering cavity in dewatering equipment in the prior art is limited by capacity, the device is possibly blocked by the existence of sludge, the energy consumption for manually cleaning the sludge is high, the water pollution treatment efficiency is low, and the working strength is high.

Description

Device for sludge dewatering

Technical Field

The invention relates to the technical field of sludge treatment, in particular to a device for sludge dewatering.

Background

Sludge is a product after sewage treatment, is a very complex heterogeneous body consisting of organic debris, bacterial thallus, inorganic particles, colloidal sludge and the like, and is cleaned if being discharged at will to cause water pollution and further pollute the environment.

Chinese patent CN1477070A discloses a sludge thickening and dewatering device, which comprises a box body composed of two water sealing plates, two overflow plates, a flow dividing plate and a flow stabilizing plate, wherein the top of the box body is a detachable sealing cover, and the bottom of the box body is a conical hopper with a drainage outlet. The device has the advantages of simple internal structure, small volume, no need of power drive, no rotating part, good concentration and dehydration effect and capability of meeting the concentration and dehydration of sludge with medium and low concentration. While feeding continuously, the concentrated sludge and the separated clear water can be discharged continuously. The sludge concentration and dehydration device can be used for the concentration and dehydration of sludge in municipal sewage plants, coal washing in coal mines, food pharmacy, petrochemical industry, ferrous metallurgy and other industries.

The dehydration chamber in the dewatering equipment receives the restriction of capacity at the dehydration process, the existence of mud simultaneously may block up the device, and artifical clearance mud is unfavorable for energy saving and consumption reduction, and through artifical material loading, the efficiency of filter-pressing is lower moreover, and working strength is great.

Disclosure of Invention

The invention provides a device for sludge dewatering, which aims to solve the problems that a dewatering cavity in dewatering equipment in the prior art is limited by capacity, the device is possibly blocked by the existence of sludge, the energy consumption for manually cleaning the sludge is high, the water pollution treatment efficiency is low, and the working strength is high.

The device for sludge dewatering adopts the following technical scheme: a device for sludge dewatering comprises a shell, a drying mechanism, a flushing compression piece, a rotary ring, an adjusting mechanism and a driving mechanism. The spin-drying mechanism comprises a filter screen, a first spiral groove and a second spiral groove. The filter screen is rotationally arranged in the shell, the first spiral groove and the second spiral groove are fixedly arranged on the inner peripheral wall of the filter screen, and the rotating directions of the first spiral groove and the second spiral groove are opposite.

The flushing compression piece can be arranged in the filter screen along the axis of the filter screen in a vertically moving mode, a first sliding block is arranged on the outer peripheral wall of the flushing compression piece, and in an initial state, the first sliding block is arranged in the first spiral groove in a sliding mode. The radial of washing compression spare is provided with a plurality of connecting axles, is provided with a plurality of first compression boards in the washing compression spare, and first compression board rotates around the connecting axle. The flushing compression piece is circumferentially and uniformly provided with a plurality of flushing water inlets.

The swivel is rotationally arranged in the flushing compression piece, a plurality of flushing ports are uniformly distributed in the circumferential direction of the swivel and used for being in one-to-one correspondence with the flushing water inlets, and the flushing ports are in a closed state in the initial state. The adjusting mechanism is used for rotating the rotating ring so as to change the overlapping area of the flushing port and the flushing water inlet. The driving mechanism is used for rotating the spin-drying mechanism.

Further, the flushing compressor is provided with a first sliding groove and a second sliding groove along the axial direction thereof. The adjusting mechanism comprises a connecting plate and a sliding block. The connecting plate can be set up in first sliding tray with reciprocating, and has frictional force between connecting plate and the first sliding tray. The connecting plate is in spiral fit with the rotating ring, and a first stop block is arranged on the peripheral wall of the connecting plate. The sliding block is arranged in the second sliding groove in a sliding mode, and friction force exists between the sliding block and the second sliding groove. The inner peripheral wall of the sliding block is provided with a second stop dog, and the second stop dog is abutted to the first stop dog in an initial state. The second sliding block is arranged on the peripheral wall of the sliding block, and in an initial state, the second sliding block is arranged in the first spiral groove in a sliding mode.

Further, a spring sleeve is arranged on the lower surface of the sliding block. The adjusting mechanism further comprises an induction plate, the spring sleeve is sleeved on the induction plate, and elastic pieces are arranged in the spring sleeve and the induction plate.

Further, a spiral protrusion is arranged on the outer peripheral wall of the rotating ring, and a third spiral groove is formed in the inner wall of the connecting plate. The spiral protrusion is slidably disposed in the third spiral groove.

Further, the driving mechanism comprises a transmission belt, and the transmission belt is connected with the filter screen.

Furthermore, the first spiral groove and the second spiral groove are arranged in a crossed mode, the thread pitch of the second spiral groove is increased from top to bottom, and the thread pitch of the second spiral groove is larger than that of the first spiral groove.

Further, a volute spiral spring is arranged in the first compression plate and the connecting shaft. The second compression plate is arranged in the flushing compression piece and connected with the connecting shafts, and due to the action of the volute spiral spring, when the flushing compression piece descends, a gap between the first compression plate and the second compression plate is in a closed state. When the flushing compression piece is lifted, the gap between the first compression plate and the second compression plate is in an open state.

Furthermore, only the peripheral wall of the filter screen is provided with the filter holes.

Further, a device for sludge dewatering still includes the waste water entry, and the waste water entry sets up on the shell, is provided with the hole the same with washing the water inlet on the waste water entry.

Furthermore, a plurality of filter holes are arranged on the first compression plate and the second compression plate.

The invention has the beneficial effects that: the device for sludge dewatering senses the accumulated amount of sludge at the bottom of the filter screen, adjusts the time for sensing the sludge by the sensing plate, and further changes the stroke for flushing the compression piece to compress the sludge.

The change of the stroke amount of the downward compression of the flushing compression piece changes the rotating angle of the rotating ring, and further changes the area of the coincidence of the flushing opening and the flushing water inlet. When filter screen bottom mud was less promptly, when the stroke volume that washes the compression piece was big more, the water yield through washing mouthful with washing the water inlet was big more, when saving the resource, can wash the mud of jam totally.

Along with the rotation of filter screen, wash the compression spare and can turn to according to the accumulation volume automation of mud, its work efficiency is high, and water pollution handles efficiently, and environmental protection is effectual.

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 description of the embodiments or the prior art will be briefly described below, and 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 these drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of an apparatus for sludge dewatering according to the present invention;

FIG. 2 is a cross-sectional view of an embodiment of an apparatus for dewatering sludge according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic structural view of a spin-drying mechanism of an embodiment of an apparatus for sludge dewatering according to the present invention;

FIG. 5 is a top cross-sectional view of an embodiment of an apparatus for dewatering sludge according to the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is a partial schematic structural view of an embodiment of an apparatus for sludge dewatering according to the present invention;

FIG. 8 is a schematic structural view of a swivel and an adjusting mechanism of an embodiment of an apparatus for sludge dewatering according to the present invention;

FIG. 9 is a side sectional view of FIG. 8;

FIG. 10 is an enlarged view at C of FIG. 9;

FIG. 11 is a state diagram of an embodiment of the apparatus for sludge dewatering of the present invention during operation.

In the figure: 110. a housing; 120. a transmission belt; 130. a wastewater inlet; 140. a spin-drying mechanism; 141. a filter screen; 142. a first helical groove; 143. a second helical groove; 150. flushing the compression member; 151. flushing the water inlet; 152. a second sliding groove; 153. a first slider; 160. rotating the ring; 161. flushing the opening; 170. a slider; 171. a second slider; 172. a second stopper; 174. a spring sleeve; 180. a connecting plate; 181. a first stopper; 182. a third helical groove; 183. a first sliding groove; 191. a first compression plate; 192. a second compression plate; 193. a connecting shaft; 221. a sensing plate.

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.

An embodiment of an apparatus for dehydrating sludge according to the present invention, as shown in fig. 1 to 11, includes a housing 110, a spin-drying mechanism 140, a flushing compression member 150, a swivel 160, an adjustment mechanism, and a driving mechanism. The spin-drying mechanism 140 includes a filter screen 141, a first spiral groove 142, and a second spiral groove 143. The filter screen 141 is rotatably disposed in the outer shell 110, the first spiral groove 142 and the second spiral groove 143 are fixedly disposed on the inner circumferential wall of the filter screen 141, and the rotation directions of the first spiral groove 142 and the second spiral groove 143 are opposite.

The flushing compressor 150 is disposed in the filter screen 141 so as to be movable up and down along the axis of the filter screen 141, a first slide block 153 is disposed on the outer peripheral wall of the flushing compressor 150, and the first slide block 153 is disposed in the first spiral groove 142 so as to slide in an initial state. A plurality of coupling shafts 193 are radially provided to the flush compressor 150, and a plurality of first compression plates 191 are provided to the flush compressor 150, the first compression plates 191 rotating about the coupling shafts 193. The flushing compressor 150 has a plurality of flushing inlets 151 distributed circumferentially.

The rotary ring 160 is rotatably disposed in the flushing compression member 150, a plurality of flushing ports 161 are uniformly distributed on the rotary ring 160 in the circumferential direction, the flushing ports 161 are in one-to-one correspondence with the flushing water inlets 151, and in an initial state, the flushing ports 161 are in a closed state. The adjustment mechanism is used to rotate the swivel 160 and thereby change the area of the flush port 161 coinciding with the flush inlet 151. The driving mechanism serves to rotate the spin-drying mechanism 140.

In the present embodiment, as shown in fig. 7, 8 and 10, the flushing compressor 150 is provided with a first sliding groove 183 and a second sliding groove 152 in the axial direction thereof. The adjustment mechanism includes a connecting plate 180 and a slider 170. The connecting plate 180 is disposed in the first sliding groove 183 so as to be movable up and down, and friction is generated between the connecting plate 180 and the first sliding groove 183. The connecting plate 180 is spirally matched with the rotating ring 160, and a first stop 181 is arranged on the outer peripheral wall of the connecting plate 180. The sliding block 170 is slidably disposed in the second sliding groove 152, and there is a friction force between the sliding block 170 and the second sliding groove 152. The inner peripheral wall of the slider 170 is provided with a second stopper 172, and in an initial state, the second stopper 172 abuts against the first stopper 181. The outer peripheral wall of the slider 170 is provided with a second slide block 171, and in an initial state, the second slide block 171 is slidably disposed in the first spiral groove 142. When the filter screen 141 rotates clockwise, the second sliding block 171 and the first sliding block 153 descend along the first spiral groove 142, and the flushing compressor 150 is driven to move downwards. When the slider 170 ascends or descends with respect to the second slide groove 152, the slider 170 pushes the connection plate 180 to ascend or descend, and thus the rotary ring 160 rotates, thereby changing the overlapping area of the flushing port 161 and the flushing inlet 151.

In this embodiment, as shown in fig. 8, the lower surface of the slider 170 is provided with a spring sleeve 174. The adjusting mechanism further comprises an induction plate 221, the spring sleeve 174 is sleeved on the induction plate 221, and elastic pieces are arranged in the spring sleeve 174 and the induction plate 221. When the flushing compressor 150 moves down to a certain extent, the sensing plate 221 senses the presence of sludge, the elastic member between the sensing plate 221 and the spring sleeve 174 is compressed, and the second sliding block 171 is forced upward.

In this embodiment, as shown in fig. 10, a spiral protrusion is provided on the outer circumferential wall of the rotary ring 160, and a third spiral groove 182 is provided on the inner wall of the connecting plate 180. The helical protrusion is slidably disposed within the third helical groove 182. When the connecting plate 180 is raised or lowered relative to the flush compressor 150, the connecting plate 180 rotates the swivel 160.

In this embodiment, as shown in fig. 1, the driving mechanism includes a belt 120, and the belt 120 is connected to a filter screen 141. The driving belt 120 is externally connected to a motor to drive the filter screen 141 to rotate clockwise. When the filter screen 141 is filled with the wastewater, the filter screen 141 rotates clockwise.

In the present embodiment, as shown in fig. 11, the first helical groove 142 and the second helical groove 143 are arranged to intersect, the pitch of the second helical groove 143 increases from top to bottom, and the pitch of the second helical groove 143 is larger than the pitch of the first helical groove 142. Because the thread pitch of the lowest end of the second spiral groove 143 is the largest, the second sliding block 171 pushes the connecting plate 180 to move upwards for the largest distance relative to the flushing compression member 150, and further the rotating angle of the rotating ring 160 is driven to be the largest, the overlapping area of the flushing port 161 and the flushing water inlet 151 is the largest, and the flow rate of the flushing water passing through at this time is larger.

In the present embodiment, as shown in fig. 5, a spiral spring is provided in the first compression plate 191 and the coupling shaft 193. The second compression plate 192 is further provided in the flushing compressor 150, the second compression plate 192 is connected to a plurality of connection shafts 193, and when the flushing compressor 150 descends due to the action of the spiral spring, a gap between the first compression plate 191 and the second compression plate 192 is closed. When the flushing compressor 150 is raised, the gap between the first and

second compression plates

191 and 192 is opened.

In the present embodiment, as shown in fig. 4, only the peripheral wall of the filter net 141 is provided with filter holes. The filtered residue falls to the bottom of the filter screen 141.

In this embodiment, as shown in fig. 1, an apparatus for sludge dewatering further includes a waste water inlet 130, the waste water inlet 130 is provided on the housing 110, and the same hole as the flushing water inlet 151 is provided on the waste water inlet 130. Waste water enters the housing 110 from the waste water inlet 130 and flush water enters the flush water inlet 151 through the same bore as the flush water inlet 151.

In the present embodiment, as shown in fig. 5, a plurality of filter holes are provided on the first and

second compression plates

191 and 192.

The working process comprises the following steps: wastewater enters the housing 110 through the wastewater inlet 130, and the housing 110 is filled with wastewater. The driving belt 120 is externally connected to a motor and always drives the filter screen 141 to rotate clockwise. When the strainer 141 rotates clockwise, the second sliding block 171 and the first sliding block 153 descend along the first spiral groove 142, and the flushing compression element 150 is driven to move downwards, and at this time, the first compression plate 191 closes the gap between the first compression plate 192 and the second compression plate 191 under the action of the spiral spring. The flushing compression member 150 moves downward to compress the sludge in the filter screen 141 to a certain extent, and the sludge is compressed to the bottom of the filter screen 141.

When the flushing compression member 150 moves downwards to a certain extent, the sensing plate 221 senses the existence of sludge, the elastic member between the sensing plate 221 and the spring sleeve 174 is compressed, the second sliding block 171 is forced upwards, the second sliding block 171 cannot rise due to the fact that the second sliding block 171 is located in the first spiral groove 142, and when the second sliding block 171 comes to the intersection point of the first spiral groove 142 and the second spiral groove 143, the second sliding block 171 changes direction to come into the second spiral groove 143 under the action of the elastic member. At this time, the first slide block 153 slides in the first spiral groove 142, the second slide block 171 slides in the second spiral groove 143, the second slide block 171 rises relative to the flushing compressor 150, the slide block 170 rises relative to the second slide groove 152, and the second stopper 172 abuts against the first stopper 181, so that the slide block 170 pushes the connecting plate 180 to move upward relative to the flushing compressor 150, and further the rotary ring 160 rotates, and at this time, the overlapping area of the flushing port 161 and the flushing water inlet 151 is gradually increased, and the flushing water inlet 151 is opened. Because the thread pitch of the lowermost end of the second spiral groove 143 is the largest, the slider 170 pushes the connecting plate 180 to move upward for the maximum distance of the flushing compression member 150, and further the rotating angle of the rotating ring 160 is driven to be the largest, the overlapping area of the flushing port 161 and the flushing water inlet 151 is the largest, the flow rate of the flushing water passing through at the moment is larger, and the flushing water washes away the sludge attached to the filtering holes on the peripheral wall of the filtering net 141.

When the first sliding block 153 comes to the intersection point of the first spiral groove 142 and the second spiral groove 143, the first sliding block 153 is no longer subjected to guiding force, at this time, the second sliding block 171 moves in the second spiral groove 143, and is subjected to upward force, and because of the friction force between the sliding block 170 and the second sliding groove 152, the sliding block 170 drives the flushing compression member 150 to ascend, that is, the first sliding block 153 enters the second spiral groove 143 to move, and at this time, one-time steering is completed.

At this time, the first sliding block 153 and the second sliding block 171 move in the second spiral groove 143, and as the flushing compression member 150 moves upward, the first compression plate 191 opens a gap with the second compression plate 192 by the action of the spiral spring, so that the sludge above the flushing compression member 150 passes through. At this time, the position of the slider 170 relative to the second sliding groove 152 is lowered, that is, the first stopper 172 is separated from the second stopper 181, and since there is a friction force between the connection plate 180 and the first sliding groove 183, the connection plate 180 is not lowered, that is, the swivel 160 is not rotated, and the overlapping area of the flushing port 161 and the flushing inlet 151 is not changed. The washing of the filter net 141 is completed during the upward movement of the washing compression member 150.

When the flushing compression member 150 moves upward to the highest point, the waste water inlet 130 presses the connection plate 180 back to the initial position, and the connection plate 180 moves downward to rotate the rotary ring 160, so that the flushing port 161 is closed. When the second sliding block 171 reaches the intersection of the highest first spiral groove 142 and the highest second spiral groove 143, the second sliding block 171 first enters the first spiral groove 142 and is subjected to a downward force, the first sliding block 153 is subjected to an upward force at the second spiral groove 143, and the sliding block 170 overcomes the friction force between the second sliding groove 152 and moves downward relative to the second sliding groove 152 to return to the initial position. The first slide block 153 then moves to the first spiral groove 142, completing another commutation.

Along with the accumulation of the mud at the bottom of the filter screen 141 increases, the time that the sensing plate 221 senses the mud is advanced, and then the time that the elastic part in the sensing plate 221 is compressed is advanced, that is, the downward stroke of the flushing compression part 150 is reduced, and the amount of the mud accumulated on the inner wall of the filter screen 141 at the moment is also reduced, so that the area of the coincidence of the flushing port 161 and the flushing water inlet 151 is increased, that is, the flow of the passing flushing water is reduced along with the change of the moving distance of the sliding block 170 relative to the second sliding groove 152, and then the change of the rotating angle of the rotating ring 160 is reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. A device for sludge dewatering, characterized in that:

comprises a shell, a spin-drying mechanism, a flushing compression piece, a rotary ring, an adjusting mechanism and a driving mechanism; the spin-drying mechanism comprises a filter screen, a first spiral groove and a second spiral groove; the filter screen is rotationally arranged in the shell, the first spiral groove and the second spiral groove are fixedly arranged on the inner peripheral wall of the filter screen, and the rotating directions of the first spiral groove and the second spiral groove are opposite;

the flushing compression piece can be arranged in the filter screen in a way of moving up and down along the axis of the filter screen, a first sliding block is arranged on the peripheral wall of the flushing compression piece, and the first sliding block is arranged in the first spiral groove in a sliding way in an initial state; a plurality of connecting shafts are radially arranged on the flushing compression piece, a plurality of first compression plates are arranged in the flushing compression piece, and the first compression plates rotate around the connecting shafts; a plurality of flushing water inlets are uniformly distributed in the circumferential direction of the flushing compression piece;

the rotating ring is rotationally arranged in the flushing compression piece, a plurality of flushing ports are uniformly distributed in the circumferential direction of the rotating ring, the flushing ports are used for being in one-to-one correspondence with the flushing water inlets, and in an initial state, the flushing ports are in a closed state; the adjusting mechanism is used for rotating the rotating ring so as to change the overlapping area of the flushing port and the flushing water inlet; the driving mechanism is used for rotating the spin-drying mechanism.

2. An apparatus for dewatering sludge according to claim 1, characterised in that:

the flushing compression piece is provided with a first sliding groove and a second sliding groove along the axial direction of the flushing compression piece; the adjusting mechanism comprises a connecting plate and a sliding block; the connecting plate can be arranged in the first sliding groove in a vertically moving mode, and friction force exists between the connecting plate and the first sliding groove; the connecting plate is spirally matched with the rotating ring, and a first stop block is arranged on the outer peripheral wall of the connecting plate; the sliding block is arranged in the second sliding groove in a sliding manner, and friction force exists between the sliding block and the second sliding groove; a second stop block is arranged on the inner peripheral wall of the sliding block, and the second stop block abuts against the first stop block in an initial state; the second sliding block is arranged on the peripheral wall of the sliding block, and in an initial state, the second sliding block is arranged in the first spiral groove in a sliding mode.

3. An apparatus for dewatering sludge according to claim 2, characterised in that:

the lower surface of the sliding block is provided with a spring sleeve; the adjusting mechanism further comprises an induction plate, the spring sleeve is sleeved on the induction plate, and elastic pieces are arranged in the spring sleeve and the induction plate.

4. An apparatus for dewatering sludge according to claim 2, further comprising:

a spiral bulge is arranged on the outer peripheral wall of the rotating ring, and a third spiral groove is arranged on the inner wall of the connecting plate; the spiral protrusion is slidably disposed in the third spiral groove.

5. An apparatus for dewatering sludge according to claim 1, characterised in that:

the driving mechanism comprises a transmission belt, and the transmission belt is connected with the filter screen.

6. An apparatus for dewatering sludge according to claim 1, further comprising:

the first spiral groove and the second spiral groove are arranged in a crossed mode, the pitch of the second spiral groove increases from top to bottom, and the pitch of the second spiral groove is larger than that of the first spiral groove.

7. An apparatus for dewatering sludge according to claim 1, characterised in that:

a volute spiral spring is arranged in the first compression plate and the connecting shaft; the flushing compression piece is internally provided with a second compression plate which is connected with a plurality of connecting shafts, and the clearance between the first compression plate and the second compression plate is in a closed state when the flushing compression piece descends due to the action of the volute spiral spring; when the flushing compression piece is lifted, the gap between the first compression plate and the second compression plate is in an open state.

8. An apparatus for dewatering sludge according to claim 1, further comprising:

only the peripheral wall of the filter screen is provided with filter holes.

9. An apparatus for dewatering sludge according to claim 1, characterised in that:

still include the waste water entry, the waste water entry sets up on the shell, is provided with the hole the same with washing the water inlet on the waste water entry.

10. An apparatus for dewatering sludge according to claim 7, further comprising:

the first compression plate and the second compression plate are provided with a plurality of filter holes.