CN220812184U - Sludge dewatering system - Google Patents
Sludge dewatering system Download PDFInfo
- Publication number
- CN220812184U CN220812184U CN202322586666.7U CN202322586666U CN220812184U CN 220812184 U CN220812184 U CN 220812184U CN 202322586666 U CN202322586666 U CN 202322586666U CN 220812184 U CN220812184 U CN 220812184U
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- sludge
- stirring
- box body
- mud
- feeding
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- 239000010802 sludge Substances 0.000 title claims abstract description 51
- 238000003756 stirring Methods 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 239000000706 filtrate Substances 0.000 claims description 26
- 238000004062 sedimentation Methods 0.000 claims description 22
- 239000003814 drug Substances 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 13
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 239000013043 chemical agent Substances 0.000 abstract description 12
- 239000002002 slurry Substances 0.000 abstract description 12
- 239000011499 joint compound Substances 0.000 description 26
- 239000008394 flocculating agent Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model relates to a sludge dewatering system, which comprises a belt type dewatering machine, wherein the belt type dewatering machine comprises a frame, a feeding section is arranged at the top end of one side of the frame, a stirring mechanism is arranged on one side of the belt type dewatering machine, which is close to the feeding section, and the stirring mechanism is used for mixing mud and flocculant; the stirring mechanism comprises a hollow stirring box body, one side of the top of the stirring box body, which is close to the feeding port, is provided with an overflow port, and the overflow port is connected with the feeding section; the feeding section comprises an inclined conveying plate connected with the frame, and the upper end of the inclined conveying plate is formed into a feeding hole. According to the utility model, the stirring mechanism is additionally arranged in front of the feeding section of the belt dehydrator, so that the slurry can be effectively ensured to be uniformly mixed with the flocculant as much as possible before entering the belt dehydrator, thereby reducing the use amount of chemical agents and lowering the cost.
Description
Technical Field
The utility model belongs to the technical field of sludge dewatering, and particularly relates to a sludge dewatering system.
Background
The sludge is used as a byproduct generated in sewage treatment, has complex components and high organic matter content, and belongs to hydrophilic substances with colloidal structures. In order to reduce the volume of the sludge and thus the cost of transportation and disposal, the sewage is required to be dehydrated; among these, mechanical dewatering is a currently commonly used sludge dewatering method.
Before mechanical dewatering of sludge, the sludge is usually pretreated, and dewatering is performed after the dewatering performance is improved. The most common pretreatment method is to add a chemical agent (such as a polymeric flocculant) to the sludge. In order to ensure that the chemical agent plays the maximum role, fully stirring the sludge and the chemical agent before the filter pressing dehydration operation; in the prior art, such as CN116693164a, a stirring mechanism for mixing sludge and flocculant is provided at one side of the press box. However, the structural design of the stirring mechanism in the technical scheme is not suitable for the belt type sludge dewatering machine, so that the stirring mechanism suitable for the belt type sludge dewatering machine is necessary to be designed, the sludge is ensured to be fully mixed with the chemical agent before being conveyed to the belt type filter press, the using amount of the chemical agent is reduced properly, and the cost is reduced.
Meanwhile, partial chemical agents still remain in the desliming water (filtered water) generated after the filter belt extrusion, the partial filtrate can be collected and recycled, and the use amount of the chemical agents is further reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a sludge dewatering system, which can be used for avoiding the problem that the existing belt-type sludge dewatering machine is insufficient in mixing of sludge and chemical agents when in use, and achieving the effects of saving the chemical agents and reducing the water content of the sludge.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The sludge dewatering system comprises a belt type dewatering machine, wherein the belt type dewatering machine comprises a frame, a feeding section is arranged at the top end of one side of the frame, and the feeding section is connected with a sludge distribution unit; the side of the belt dehydrator, which is close to the feeding section, is provided with a stirring mechanism, and the stirring mechanism is used for mixing mud and flocculant;
the stirring mechanism comprises a hollow stirring box body, an overflow port is formed in one side, close to the feeding section, of the top of the stirring box body, and the overflow port is connected with the feeding section;
The feeding section comprises an inclined conveying plate connected with the frame, the upper end of the inclined conveying plate is formed into a feeding port, and the feeding port is connected with the overflow port;
the lower end of the oblique transport plate is connected with the mud distribution unit.
Further perfecting the technical scheme, the lower part of one side of the frame, which is close to the stirring mechanism, is connected with two horizontal connecting brackets which are arranged at intervals, and the lower surface of the stirring box body is connected to the connecting brackets;
The side surface of the stirring box body opposite to the rack is attached to and connected with the rack.
Further, a mud inlet is formed in the bottom of the stirring box body, and the mud inlet is formed between the two connecting brackets;
The mud inlet extends outwards and is connected with a feeding pipeline, and the free end of the feeding pipeline is connected with a mud storage tank through a mud pump; and the feeding pipeline is also connected with a medicament inlet pipe.
Further, the free end of the medicament inlet pipe is connected with the medicament adding pond through a medicament pump;
and stop valves are arranged on the feeding pipeline and the medicament inlet pipe.
Further, be equipped with vertical (mixing) shaft in the stirring box, the bottom of (mixing) shaft is equipped with stirring vane, and the top of (mixing) shaft is connected with a driving motor's output, driving motor installs in the top of stirring box.
Further, the belt dehydrator further comprises an extrusion dehydration unit;
The outlet end of the extrusion dehydration unit is provided with a liquid collecting tank, the liquid collecting tank is connected with a filtrate sedimentation tank so as to collect and sediment filtrate, and the filtrate sedimentation tank is connected with the mud storage tank so as to reflux supernatant into the mud storage tank.
Further, the filtrate sedimentation tank is provided with a water inlet, a water outlet and a sludge discharge port, the sludge discharge port is arranged at the bottom of the filtrate sedimentation tank so as to discharge bottom sludge, the water inlet and the water outlet are both arranged on the side wall of the filtrate sedimentation tank, and the height of the water inlet is lower than that of the water outlet;
the water outlet is connected with a water pump, and the water outlet end of the water pump is connected with the mud storage pool.
Further, the belt dehydrator also comprises a plurality of filter cloth deviation correcting devices, each filter cloth deviation correcting device comprises a deviation correcting cylinder and an air pipe, one end of each air pipe is connected with the corresponding deviation correcting cylinder, the other end of each air pipe is connected with an air compressor, and one end, close to the corresponding deviation correcting cylinder, of each air pipe is arranged on the frame and fixed on the outer side face of the frame through a plurality of fixing belts.
Compared with the prior art, the utility model has the following beneficial effects:
1. The utility model discloses a sludge dewatering system, which is based on the structural characteristics of a feeding section of a belt type dewatering machine, wherein a stirring box body of a stirring mechanism is arranged in a manner of being attached to a rack close to the feeding section, and overflow ports are correspondingly formed in the stirring box body, so that slurry and flocculant uniformly mixed in the stirring box body enter the feeding section of the belt type dewatering machine through the overflow ports, and a follow-up sludge distributor is convenient for uniformly distributing the slurry to a gravity dewatering area.
2. According to the sludge dewatering system, the flocculating agent is extremely soluble in water, mud and water separation is realized after the flocculating agent mixed with the mud passes through the extrusion dewatering area, a large amount of filtrate is collected into the filtrate sedimentation tank for sedimentation, and supernatant fluid is returned into the mud storage tank for recycling, so that the addition of the flocculating agent can be further reduced, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a sludge dewatering system (excluding a sludge storage tank and a filtrate settling tank) according to an embodiment;
FIG. 2 is a schematic illustration of the connection of the stirring mechanism to the feed end of the belt dehydrator in the example;
FIG. 3 is a block diagram of a sludge dewatering system according to an embodiment;
Wherein, store up mud pond 1, rabbling mechanism 2, stirring box 21, overflow mouth 22, first extension 221, second extension 222, connecting portion 23, belt hydroextractor 3, frame 31, linking bridge 311, slant transport plate 32, feed inlet 321, first filter cloth 33, second filter cloth 34, filtrate sedimentation tank 4, feeding pipeline 5, medicament import pipe 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
Referring to fig. 1-3, a sludge dewatering system of a specific embodiment includes a belt type dewatering machine 3, wherein the belt type dewatering machine 3 includes a frame 31, a feeding section is arranged at the top end of one side of the frame 31, and the feeding section is connected with a sludge distributing unit; the side of the belt dehydrator 3, which is close to the feeding section, is provided with a stirring mechanism 2, and the stirring mechanism 2 is used for mixing mud and flocculant;
The stirring mechanism 2 comprises a hollow stirring box body 21, wherein an overflow port 22 is formed in one side, close to the feeding section, of the top of the stirring box body 21, and the overflow port 22 is connected with the feeding section;
The feeding section comprises an inclined conveying plate 32 connected with the frame 31, the upper end of the inclined conveying plate 32 is formed into a feeding hole 321, and the feeding hole 321 is connected with the overflow hole 22;
the lower end of the inclined transport plate 32 is connected to the mud distribution unit.
According to the sludge dewatering system, based on the structural characteristics of the feeding section of the belt dewaterer 3, the stirring box body 21 of the stirring mechanism 2 is attached to the rack 31 close to the feeding section, and the overflow port 22 is correspondingly formed in the stirring box body 21, so that the slurry and the flocculating agent which are uniformly mixed in the stirring box body 21 can enter the feeding section of the belt dewaterer 3 through the overflow port 22, the slurry is uniformly distributed onto the gravity dewatering unit by a subsequent slurry distribution unit conveniently, and therefore, the stirring mechanism 2 is additionally arranged before the feeding section of the belt dewaterer 3, and the slurry can be effectively ensured to be uniformly mixed with the flocculating agent as much as possible before entering the belt dewaterer 3, so that the use amount of chemical agents is reduced, and the cost is reduced.
With continued reference to fig. 2, the lower part of the frame 31 near one side of the stirring mechanism 2 is connected with two horizontal connecting brackets 311 arranged at intervals, and the lower surface of the stirring box 21 is connected to the connecting brackets 311;
The side of the stirring tank body 21 is attached to and connected with the opposite side of the frame 31.
In this way, it is easy to attach the agitation enclosure 21 to one side of the frame 31.
Wherein, a mud inlet is arranged at the bottom of the stirring box body 21, and the mud inlet is arranged between the two connecting brackets 311;
The mud inlet extends outwards and is connected with a feeding pipeline 5, and the free end of the feeding pipeline 5 is connected with a mud storage tank 1 through a mud pump; the feeding pipeline 5 is also connected with a medicament inlet pipe 6.
In this way, the slurry is thoroughly mixed with the flocculant by the stirring mechanism 2 before it enters the belt dewaterer 3.
Wherein the free end of the medicament inlet tube 6 is connected with a medicament adding pond (not shown) through a medicament pump (not shown);
and the feed pipeline 5 and the medicament inlet pipe 6 are respectively provided with a stop valve.
Thus, the pumping amount of the slurry and the use amount of the flocculant (chemical agent) can be controlled as required.
Wherein, be equipped with vertical (mixing) shaft in the stirring box 21, the bottom of (mixing) shaft is equipped with stirring vane, and the top of (mixing) shaft is connected with a driving motor's output, driving motor installs in the top of stirring box 21.
When the method is implemented, the stirring box body 21 is an octahedron, and the octahedral structure can effectively reduce the accumulation of sludge and flocculant at the corners of the stirring box body 21; two stirring shafts can be arranged in the stirring box body 21 at intervals along the length direction of the overflow port 22, and correspondingly, two driving motors are arranged, so that the side surface, connected with the frame, of the octahedron is correspondingly widened.
As shown in fig. 2, the overflow port 22 is in a horizontal strip shape, the overflow port 22 is flush with the feeding port 321, a first extension section 221 is provided at the lower end of the overflow port 22 in an obliquely downward extending manner, and the first extension section 221 is overlapped with the oblique transport plate 32;
Connecting parts 23 are arranged on two sides of the inclined transport plate 32, the height of the connecting parts 23 is higher than that of the feeding holes 321, and the surface, close to the stirring box body 21, of the connecting parts 23 is flush with the frame 31 and is attached to and connected with the stirring box body 21;
The two side walls of the overflow port 22 are flush with the two ends of the feed port 321, and the two side walls of the overflow port 22 are provided with second extending sections 222 in an outward extending manner, and the second extending sections 222 on the two sides of the overflow port 22 are overlapped with the two connecting parts 23.
In practice, the overflow port 22 is set to have the same width as the inclined transportation plate 32, and the first extension section 221 and the second extension section 222 ensure that the slurry mixed with the flocculant enters the belt dehydrator 3 along the inclined transportation plate 32 under the action of gravity, so that the slurry is uniformly transported to the subsequent process.
Wherein the belt dehydrator 3 further comprises an extrusion dehydration unit; the squeezing dehydration unit comprises a first filter cloth 33 and a second filter cloth 34 which are independently circulated, wherein the outer sides of part of filter cloth sections of the first filter cloth 33 and the second filter cloth 34 are attached (used for clamping middle sludge) and form an S-shaped squeezing section with a plurality of squeezing rollers which are arranged on a frame in a staggered manner;
The outlet end of the squeezing dehydration unit is provided with a liquid collecting tank (not shown in the figure), the liquid collecting tank is connected with a filtrate sedimentation tank 4 so as to collect and sediment filtrate, and the filtrate sedimentation tank 4 is connected with the mud storage tank 1 so as to reflux supernatant into the mud storage tank 1.
Thus, as the flocculating agent is extremely soluble in water, mud and water separation is realized after the flocculating agent is mixed with the slurry through the extrusion dewatering area, a large amount of filtrate is collected into the filtrate sedimentation tank 4 for sedimentation, supernatant fluid is refluxed into the mud storage tank 1, and wastewater recycling is realized, so that the addition of the flocculating agent can be further reduced, and the cost is reduced.
The filtrate sedimentation tank 4 is provided with a water inlet, a water outlet and a sludge discharge port, the sludge discharge port is arranged at the bottom of the filtrate sedimentation tank 4 so as to discharge bottom sludge, the water inlet and the water outlet are both arranged on the side wall of the filtrate sedimentation tank 4, and the height of the water inlet is lower than that of the water outlet;
the water outlet is connected with a water pump, and the water outlet end of the water pump is connected with the mud storage pool 1.
Therefore, the structural design of the filtrate sedimentation tank 4 is convenient for extracting supernatant and has good sedimentation effect.
The belt dehydrator 3 further comprises a plurality of filter cloth deviation correcting devices (not shown in the figure), each filter cloth deviation correcting device comprises a deviation correcting cylinder and an air pipe, one end of each air pipe is connected with the corresponding deviation correcting cylinder, the other end of each air pipe is connected with an air compressor (not shown in the figure), and one end, close to the corresponding deviation correcting cylinder, of each air pipe is arranged on the frame 31 in an external mode and is fixed on the outer side face of the frame 31 through a plurality of fixing belts.
Thus, compared with the air pipe installed on the inner side of the frame 31, the air pipe is convenient to maintain and replace, the installation environment of the air pipe is dry, and the service life of the air pipe is prolonged.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (8)
1. The sludge dewatering system comprises a belt type dewatering machine, wherein the belt type dewatering machine comprises a frame, a feeding section is arranged at the top end of one side of the frame, and the feeding section is connected with a sludge distribution unit; the method is characterized in that: the side of the belt dehydrator, which is close to the feeding section, is provided with a stirring mechanism, and the stirring mechanism is used for mixing mud and flocculant;
the stirring mechanism comprises a hollow stirring box body, an overflow port is formed in one side, close to the feeding section, of the top of the stirring box body, and the overflow port is connected with the feeding section;
The feeding section comprises an inclined conveying plate connected with the frame, the upper end of the inclined conveying plate is formed into a feeding port, and the feeding port is connected with the overflow port;
the lower end of the oblique transport plate is connected with the mud distribution unit.
2. A sludge dewatering system as claimed in claim 1, wherein: the lower part of one side of the frame, which is close to the stirring mechanism, is connected with two connecting brackets which are horizontally arranged at intervals, and the lower surface of the stirring box body is connected to the connecting brackets;
The side surface of the stirring box body opposite to the rack is attached to and connected with the rack.
3. A sludge dewatering system as claimed in claim 2, wherein: the bottom of the stirring box body is provided with a mud inlet which is arranged between the two connecting brackets;
The mud inlet extends outwards and is connected with a feeding pipeline, and the free end of the feeding pipeline is connected with a mud storage tank through a mud pump; and the feeding pipeline is also connected with a medicament inlet pipe.
4. A sludge dewatering system as claimed in claim 3, wherein: the free end of the medicament inlet pipe is connected with the medicament adding pond through a medicament pump;
and stop valves are arranged on the feeding pipeline and the medicament inlet pipe.
5. A sludge dewatering system as claimed in claim 1, wherein: the stirring box body is internally provided with a vertical stirring shaft, the bottom end of the stirring shaft is provided with stirring blades, the top end of the stirring shaft is connected with the output end of a driving motor, and the driving motor is arranged at the top of the stirring box body.
6. A sludge dewatering system as claimed in claim 3, wherein: the belt dehydrator further comprises an extrusion dehydration unit;
The lower part of the extrusion dehydration unit is provided with a liquid collecting tank, the liquid collecting tank is connected with a filtrate sedimentation tank so as to collect and sediment filtrate, and the filtrate sedimentation tank is connected with the mud storage tank so as to reflux supernatant into the mud storage tank.
7. The sludge dewatering system of claim 6, wherein: the filtrate sedimentation tank is provided with a water inlet, a water outlet and a sludge discharge port, the sludge discharge port is arranged at the bottom of the filtrate sedimentation tank so as to discharge bottom sludge, the water inlet and the water outlet are both arranged on the side wall of the filtrate sedimentation tank, and the height of the water inlet is lower than that of the water outlet;
the water outlet is connected with a water pump, and the water outlet end of the water pump is connected with the mud storage pool.
8. A sludge dewatering system as claimed in claim 1, wherein: the belt dehydrator further comprises a plurality of filter cloth deviation correcting devices, each filter cloth deviation correcting device comprises a deviation correcting cylinder and an air pipe, one end of each air pipe is connected with the corresponding deviation correcting cylinder, the other end of each air pipe is connected with an air compressor, and one end, close to the corresponding deviation correcting cylinder, of each air pipe is arranged on the frame and fixed on the outer side face of the frame through a plurality of fixing belts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322586666.7U CN220812184U (en) | 2023-09-22 | 2023-09-22 | Sludge dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322586666.7U CN220812184U (en) | 2023-09-22 | 2023-09-22 | Sludge dewatering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220812184U true CN220812184U (en) | 2024-04-19 |
Family
ID=90702984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322586666.7U Active CN220812184U (en) | 2023-09-22 | 2023-09-22 | Sludge dewatering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220812184U (en) |
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2023
- 2023-09-22 CN CN202322586666.7U patent/CN220812184U/en active Active
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