CN107216012B - Sludge heating and drying system and method - Google Patents
Sludge heating and drying system and method Download PDFInfo
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- CN107216012B CN107216012B CN201710425560.5A CN201710425560A CN107216012B CN 107216012 B CN107216012 B CN 107216012B CN 201710425560 A CN201710425560 A CN 201710425560A CN 107216012 B CN107216012 B CN 107216012B
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- 239000010802 sludge Substances 0.000 title claims abstract description 161
- 238000001035 drying Methods 0.000 title claims abstract description 105
- 238000010438 heat treatment Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 70
- 238000004140 cleaning Methods 0.000 claims abstract description 58
- 238000001125 extrusion Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000018044 dehydration Effects 0.000 claims abstract description 33
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 33
- 239000010865 sewage Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 17
- 208000005156 Dehydration Diseases 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 21
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 230000007723 transport mechanism Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
- B01F27/806—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/85—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers on separate shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
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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
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge heating and drying system, which comprises a pretreatment mechanism, a conveying mechanism and a drying mechanism, wherein the pretreatment mechanism comprises a dehydration cavity and a dispersion cavity, a dehydration cylinder and an extrusion device are arranged in the dehydration cavity, an inclined table and a dispersion device are arranged in the dispersion cavity, the drying mechanism comprises a drying box body and a heating device, and the drying method comprises the following steps: (1) primary dewatering treatment of sludge; (2) sludge dispersion treatment; (3) drying the sludge; (4) cleaning, checking and repairing. The sludge dewatering device is simple in structure and high in practicability, most of sewage in sludge is removed through the dewatering cavity, and then the extruded and agglomerated sludge is subjected to dispersion treatment through the dispersion cavity, so that the working pressure of the drying box body is reduced, the drying effect and the drying quality of the sludge are improved, water resources are saved, and the comprehensive utilization rate is improved.
Description
Technical Field
The invention relates to a sludge heating and drying system and a method thereof.
Background
The urbanization process of China is in a continuously accelerated stage, the environment pollution condition is aggravated, and the sludge problem becomes a great problem related to the life of people. Annual sludge yield in China is huge and weight is extremely staggering. Meanwhile, the total sewage discharge amount of most cities is on the trend of increasing rapidly, however, the corresponding sewage treatment rate is not increased correspondingly, and the discharge and stacking of the sludge become new important pollution sources. Aiming at the sludge with larger quantity, effective measures are taken to dehydrate the sludge with larger quantity, so that the aims of no harm to the environment, reduction of the discharge quantity, recycling of resources and the like are achieved, and the method becomes a key focus topic of workers in China.
At present, domestic sludge treatment technologies are numerous, and the technologies comprise three aspects of sludge dehydration, concentration and drying. The sludge drying is an important link in the sludge treatment process, and the sludge can be conveniently and subsequently treated and reused after being dried.
Disclosure of Invention
The invention aims to provide a technical scheme of a sludge heating and drying system aiming at the defects in the prior art, which comprises the steps of removing most of sewage in sludge through a dehydration cavity, and dispersing and treating the extruded and agglomerated sludge through a dispersion cavity, so that the working pressure of a drying box body is reduced, the drying effect and the drying quality of the sludge are improved, water resources are saved, and the comprehensive utilization rate is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a mud heating and drying system, includes pretreatment mechanism, transport mechanism and drying mechanism, its characterized in that: pretreatment mechanism is linked together through transport mechanism and drying mechanism, pretreatment mechanism includes dehydration chamber and dispersion chamber, the dehydration chamber, the dispersion chamber sets gradually from left to right, dehydration intracavity is provided with dewatering cylinder and extrusion device, extrusion device sets up in dewatering cylinder, be provided with tiltboard and dispersion device in the dispersion chamber, drive mechanism includes conveyer belt and support, the conveyer belt passes through support fixed stay, drying mechanism includes drying box and heating device, drying box's inside is provided with agitating unit and elastic buffer board, agitating unit is located elastic buffer board's top, agitating unit includes agitator motor, (mixing) shaft and frame stirring rake, agitator motor is located drying box's left side upper end, frame stirring rake passes through the (mixing) shaft and is connected with agitator motor, the crisscross setting about the elastic buffer board, elastic buffer board's below is provided with out the mud groove.
Further, the below of dewatering cylinder is provided with the filter screen, and the filter screen includes first filter screen and second filter screen, and the sieve mesh diameter of first filter screen is greater than the sieve mesh diameter of second filter screen, and the design of first filter screen and second filter screen can get rid of the foreign particles that contain in sewage, and the effect of getting rid of impurity in the sewage can be further improved in the design of the sieve mesh diameter of first filter screen and second filter screen, designs more rationally.
Further, evenly be provided with the hole that leaks on the lower lateral wall of dehydration section of thick bamboo, all be provided with the membrane of permeating water on the hole that leaks, the left end of dehydration section of thick bamboo is provided with left sealing ring, the feeder hopper passes in left sealing ring extends to the dehydration section of thick bamboo, the right-hand member of dehydration section of thick bamboo is the opening form, the right-hand member of dehydration section of thick bamboo extends to the dispersion intracavity, the design in the hole that leaks can be convenient for extrude the discharge of sewage, the design in the membrane of permeating water not only can be convenient for the discharge of sewage, but also can hinder.
Further, extrusion device is including the extrusion cylinder, the stripper plate and smash the tooth, the extrusion cylinder is located the top surface in dehydration chamber, the piston rod of atmospheric pressure cylinder passes the inside that the top surface of dehydration section of thick bamboo extends to the dehydration section of thick bamboo and is connected with the stripper plate, it evenly sets up on the bottom surface of stripper plate to smash the tooth, it passes through mounting panel and stripper plate fixed connection to smash the tooth, the reciprocating of stripper plate is driven through the piston rod to the extrusion cylinder, thereby carry out the extrusion operation to the mud in the dehydration section of thick bamboo, thereby make most sewage discharge in the mud, it can smash the hard matter in the mud to smash the tooth.
Further, dispersion devices includes rotating electrical machines, dispersion axle and dispersion impeller, and rotating electrical machines is connected with the dispersion impeller, and the dispersion axle passes the surface of sloping platform and is connected with the dispersion impeller, and the dispersion impeller is evenly established at the dispersion epaxially, and rotating electrical machines drives the rotation of dispersion axle to the rotation that drives the dispersion impeller carries out dispersion treatment to mud, and the operation is automatic, and it is convenient to use.
Further, be provided with belt cleaning device on dispersion devices's the top surface, belt cleaning device includes the telescopic link and washs the dish, the telescopic link is the cavity form with the inside of wasing the dish, the telescopic link up with wasing the dish mutually, the lower extreme of telescopic link is connected with wasing the dish, and extend to the inside of wasing the dish, the upper end of telescopic link and the top lateral wall fixed connection in dispersion chamber, the upper end of telescopic link is connected with the water tank through the elasticity conveyer pipe, the water tank is located the right side upper end in dispersion chamber, belt cleaning device's design can regularly carry out the cleaning operation to dispersion device, avoid mud to glue the surface of gluing at dispersion devices, influence the decentralized.
Furthermore, a partition board is arranged between the cleaning device and the dispersing device, the partition board comprises a frame plate and a sealing door plate, a perforation is arranged in the center of the frame plate, the perforation is matched with the cleaning disc, the sealing door plate is positioned on the bottom surface of the frame plate, the diameter of the sealing door plate is larger than that of the perforation, the left end of the sealing door plate is fixedly connected with the bottom surface of the frame plate through an elastic pressure spring, a first permanent magnet is arranged on the bottom surface of the right end of the sealing door plate, a second permanent magnet corresponding to the first permanent magnet is arranged on the bottom surface of the frame plate, the first permanent magnet and the second permanent magnet attract each other, the partition board can protect the cleaning device, when the dispersing device is used for dispersing sludge, the sludge is prevented from splashing and sticking to the bottom surface of the cleaning disc, the use of the cleaning device is influenced, the elastic pressure spring can be convenient for the rotation and the reset of the sealing door plate, the, structural design is more reasonable, and when belt cleaning device during operation, the telescopic link moved down, drives and washs the dish and passes the perforation and extrude sealed door plant's surface, and when big extrusion force was greater than the appeal between first permanent magnet and the second permanent magnet, sealed door plant's right-hand member was opened for wash the dish and can continue to move down.
Further, heating device includes hot plate and heater strip, and the heater strip is located the hot plate, and the inside wall fixed connection of hot plate and drying box evenly is provided with the heat conduction hole on a side end face of hot plate, and the heat of can being convenient for of the design in heat conduction hole transmits fast for the drying effect of mud is better, and drying rate is also faster, designs more rationally.
The drying method adopting the sludge heating and drying system is characterized in that: the method comprises the following steps:
1) primary sludge dewatering treatment:
the sludge is conveyed into a dewatering cavity for dewatering treatment, the sludge enters a dewatering cylinder from a feed hopper, an extrusion device starts to work, an extrusion cylinder drives an extrusion plate through a piston rod to compress and extrude the sludge in the dewatering cylinder, so that sewage in the sludge is discharged into the bottom of the dewatering cavity from water leakage holes in the lower side wall of the dewatering cylinder, and then is discharged from a water outlet in the bottom for centralized treatment of the sewage;
2) sludge dispersion treatment:
(1) the sludge dehydrated by the dehydrating cylinder enters the inclined table of the dispersing cavity from the right end of the dehydrating cylinder, the dispersing devices start to work simultaneously, the sludge on the inclined table is dispersed by the plurality of dispersing devices, and the rotating motor drives the dispersing shaft to rotate, so that the dispersing disc is driven to rotate to disperse the extruded sludge, the extruded sludge is crushed into particles, the subsequent drying treatment of the sludge is facilitated, the dispersing speed of the sludge can be improved, the treatment speed of the sludge is accelerated, the quality of the subsequently treated sludge is better, and the working pressure of the drying box is reduced;
(2) and meanwhile, the dispersing device is cleaned at regular intervals, the cleaning disc moves downwards through the telescopic rod, the distance between the cleaning disc and the dispersing device is shortened, water in the water tank is conveyed into the telescopic rod from the elastic conveying pipe through the reverse suction pump, and finally the water enters the cleaning disc and is sprayed out from the bottom surface of the cleaning disc, so that the dispersing device is cleaned.
3) Drying treatment of sludge:
(1) conveying the dispersed sludge to the inside of a drying box body through a conveying belt to perform drying treatment;
(2) before the sludge enters the drying box body, a heating device in the drying box body preheats the sludge, a heating wire in a heating plate heats the sludge and then the sludge is distributed out through heat conducting holes in the surface of the heating plate, so that the temperature in the drying box body reaches the drying temperature of the sludge;
(3) after the sludge enters the drying box body, the heating device continuously heats the sludge to dry the sludge, and meanwhile, the stirring device stirs the sludge to increase the surface area of the sludge and ensure that heat is fully contacted with the sludge, thereby improving the drying effect and quality of the sludge;
(4) the drying time of mud is further prolonged through the cushioning effect of elastic buffer board to the mud after the drying for the stoving effect of mud is better, and reentrant mud groove discharges from mud groove.
4) Cleaning, checking and repairing:
regularly clear up and maintain the inside of dehydration section of thick bamboo, filter screen and the inside of drying box, will glue glutinous residual sludge and impurity removal to the processing of follow-up mud of being convenient for.
Further, in step 1), the sewage discharged from the water leakage hole of the dewatering cylinder is filtered by the particle impurities of the sewage through the double filtration of the first filter screen and the second filter screen, so that the sewage can be recycled conveniently in the later period.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the sludge is dehydrated through the dehydration cavity, and most of sewage in the sludge is removed, so that the subsequent drying treatment of the sludge is facilitated, the working pressure of a drying box body is reduced, and meanwhile, the separated sewage is subjected to centralized treatment and utilization, so that water resources are effectively saved, and the loss of energy consumption is reduced;
2. the dispersing device in the dispersing cavity is used for dispersing the extruded and agglomerated sludge, so that the drying effect of the subsequent sludge is improved conveniently, and meanwhile, the plurality of dispersing devices are used for dispersing the sludge, so that the dispersing speed is improved, the sludge treatment speed and treatment quality are improved, the design is more reasonable, and the use is more convenient;
3. carry out the regular cleaning operation to the dispersion devices of dispersion intracavity through belt cleaning device, will glue the mud of gluing on dispersion devices and clear away totally to the dispersion of the follow-up mud of being convenient for improves the overall treatment rate and the quality of mud, uses convenient more reasonable of operation.
The sludge dewatering device is simple in structure and high in practicability, most of sewage in sludge is removed through the dewatering cavity, and then the extruded and agglomerated sludge is subjected to dispersion treatment through the dispersion cavity, so that the working pressure of the drying box body is reduced, the drying effect and the drying quality of the sludge are improved, water resources are saved, and the comprehensive utilization rate is improved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a sludge heating and drying system according to the present invention;
FIG. 2 is an internal structure view of a drying cabinet according to the present invention;
FIG. 3 is an internal structure view of a dehydrating cylinder according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 1 at I;
fig. 5 is an internal structure view of the heating plate of the present invention.
In the figure: 1-a dehydration cavity; 2-a dispersion chamber; 3-a dewatering cylinder; 4-a tilting table; 5, a conveyor belt; 6-a scaffold; 7-drying the box body; 8-an elastic buffer plate; 9-a stirring motor; 10-a stirring shaft; 11-frame type stirring paddle; 12-a mud outlet groove; 13-a first filter; 14-a second filter screen; 15-water leakage holes; 16-an extrusion cylinder; 17-a stripper plate; 18-crushing teeth; 19-mounting a plate; 20-a rotating electrical machine; 21-a dispersion axis; 22-a dispersion tray; 23-a telescopic rod; 24-a wash tray; 25-an elastic conveying pipe; 26-a water tank; 27-a frame plate; 28-sealing door panel; 29-perforating; 30-elastic compression spring; 31-a first permanent magnet; 32-a second permanent magnet; 33-a heating plate; 34-heating wires; 35-heat conduction holes; 36-feed hopper.
Detailed Description
As shown in fig. 1 to 5, the sludge heating and drying system of the present invention comprises a pretreatment mechanism, a conveying mechanism and a drying mechanism, wherein the pretreatment mechanism is communicated with the drying mechanism through the conveying mechanism, the pretreatment mechanism comprises a dehydration chamber 1 and a dispersion chamber 2, and the dehydration chamber 1 and the dispersion chamber 2 are sequentially arranged from left to right.
A dewatering cylinder 3 and an extrusion device are arranged in the dewatering cavity 1, the extrusion device is arranged in the dewatering cylinder 3, water leakage holes 15 are uniformly arranged on the lower side wall of the dewatering cylinder 3, a permeable membrane is arranged on the water leakage holes 15, a left sealing ring is arranged at the left end of the dewatering cylinder 3, a feed hopper 36 penetrates through the left sealing ring and extends into the dewatering cylinder 3, the right end of the dewatering cylinder 3 is in an open shape, the right end of the dewatering cylinder 3 extends into the dispersion cavity 2, the discharge of extruded sewage can be facilitated by the design of the water leakage holes 15, the discharge of sewage can be facilitated by the design of the permeable membrane, and the discharge of sludge can be blocked, a filter screen is arranged below the dewatering cylinder 3, the filter screen comprises a first filter screen 13 and a second filter screen 14, the diameter of the filter screen of the first filter screen 13 is larger than that of the second filter screen 14, the design of the first filter screen 13 and the second filter screen 14 can remove impurity particles contained, the design of the mesh diameters of the first filter screen 13 and the second filter screen 14 can further improve the removal effect of impurities in sewage, the design is more reasonable, the extrusion device comprises an extrusion cylinder 16, an extrusion plate 17 and crushing teeth 18, the extrusion cylinder 16 is positioned on the top surface of the dewatering cavity 1, a piston rod of an air pressure cylinder penetrates through the top surface of the dewatering cylinder 3 and extends to the inside of the dewatering cylinder 3 to be connected with the extrusion plate 17, the crushing teeth 18 are uniformly arranged on the bottom surface of the extrusion plate 17, the crushing teeth 18 are fixedly connected with the extrusion plate 17 through a mounting plate 19, the extrusion cylinder 16 drives the extrusion plate 17 to move up and down through the piston rod, thereby extruding the sludge in the dewatering cylinder 3, most of the sewage in the sludge is discharged, the crushing teeth 18 can crush hard substances in the sludge, the sludge is dehydrated through the dewatering cavity 1, most of the sewage in the sludge is removed, thereby be convenient for follow-up sludge drying process, slow down the operating pressure of drying box 7, carry out the centralized processing utilization with the sewage after the separation again simultaneously, effective water economy resource, the loss of energy saving consumption.
The dispersing cavity 2 is internally provided with an inclined platform 4 and a dispersing device, the dispersing device comprises a rotating motor 20, a dispersing shaft 21 and a dispersing disc 22, the rotating motor 20 is connected with the dispersing shaft 21, the dispersing shaft 21 penetrates through the surface of the inclined platform 4 to be connected with the dispersing disc 22, the dispersing disc 22 is uniformly arranged on the dispersing shaft 21, the rotating motor 20 drives the dispersing shaft 21 to rotate, so as to drive the dispersing disc 22 to rotate to disperse sludge, the operation is automatic and convenient to use, the top surface of the dispersing device is provided with a cleaning device, the cleaning device comprises a telescopic rod 23 and a cleaning disc 24, the interiors of the telescopic rod 23 and the cleaning disc 24 are hollow, the telescopic rod 23 is communicated with the cleaning disc 24, the lower end of the telescopic rod 23 is connected with the cleaning disc 24 and extends into the interior of the cleaning disc 24, the upper end of the telescopic rod 23 is fixedly connected with the top side wall of the dispersing cavity 2, and the upper end of the telescopic rod 23, the water tank 26 is arranged at the upper end of the right side of the dispersing cavity 2, the cleaning device is designed to clean the dispersing device regularly to prevent the sludge from being adhered to the surface of the dispersing device and affecting the subsequent dispersing treatment of the sludge, the transmission mechanism comprises a conveyor belt 5 and a bracket 6, the conveyor belt 5 is fixedly supported by the bracket 6, a partition plate is arranged between the cleaning device and the dispersing device, the partition plate comprises a frame plate 27 and a seal door plate 28, a perforation 29 is arranged at the center of the frame plate 27, the perforation 29 is matched with the cleaning disc 24, the seal door plate 28 is arranged on the bottom surface of the frame plate 27, the diameter of the seal door plate 28 is larger than that of the perforation 29, the left end of the seal door plate 28 is fixedly connected with the bottom surface of the frame plate 27 through an elastic pressure spring 30, a first permanent magnet 31 is arranged at the right end of the bottom surface of the seal door plate 28, the first permanent magnet 31 and the second permanent magnet 32 attract each other, the design of the partition plate can protect the cleaning device, when the dispersing device is used for dispersing sludge, the sludge is splashed and adhered to the bottom surface of the cleaning disc 24, the use of the cleaning device is influenced, the design of the elastic pressure spring 30 can facilitate the rotation and the reset of the sealing door plate 28, the design of the first permanent magnet 31 and the second permanent magnet 32 can facilitate the connection firmness between the sealing door plate 28 and the frame plate 27, the structural design is more reasonable, when the cleaning device works, the telescopic rod 23 moves downwards to drive the cleaning disc 24 to penetrate through the through hole 29 to extrude the surface of the sealing door plate 28, when the large extrusion force is larger than the attraction force between the first permanent magnet 31 and the second permanent magnet 32, the right end of the sealing door plate 28 is opened, so that the cleaning disc 24 can continuously move downwards, the sludge extruded into blocks is dispersed and treated by the dispersing device in the dispersing cavity 2, thereby be convenient for improve the drying effect of follow-up mud, carry out dispersion treatment to mud through a plurality of dispersion devices simultaneously, improve dispersion speed, accelerate the processing rate and the treatment quality of mud, design more rationally, it is also more convenient to use, carry out the regular cleaning operation to the dispersion device in dispersion chamber 2 through belt cleaning device, it is clean to glue the mud of gluing on dispersion device, thereby be convenient for the dispersion of follow-up mud, improve the overall treatment speed and the quality of mud, use convenient more reasonable of operation.
The drying mechanism comprises a drying box body 7 and a heating device, a stirring device and an elastic buffer plate 8 are arranged in the drying box body 7, the stirring device is positioned above the elastic buffer plate 8 and comprises a stirring motor 9, (mixing) shaft 10 and frame stirring rake 11, agitator motor 9 is located the left side upper end of drying cabinet 7, frame stirring rake 11 is connected with agitator motor 9 through (mixing) shaft 10, crisscross setting about elastic buffer board 8, elastic buffer board 8's below is provided with out mud groove 12, heating device includes hot plate 33 and heater strip 34, heater strip 34 is located hot plate 33, hot plate 33 and drying cabinet 7's inside wall fixed connection, evenly be provided with heat conduction hole 35 on a side end face of hot plate 33, the heat fast transmission can be convenient for in heat conduction hole 35's design, make the drying effect of mud better, drying rate is also faster, it is more reasonable to design.
The drying method adopting the sludge heating and drying system comprises the following steps:
1) primary sludge dewatering treatment:
firstly, sludge is conveyed into a dehydration cavity 1 for dehydration treatment, the sludge enters a dehydration cylinder 3 from a feed hopper 36, an extrusion device starts to work, an extrusion cylinder 16 drives an extrusion plate 17 through a piston rod to compress and extrude the sludge in the dehydration cylinder 3, so that sewage in the sludge is discharged into the bottom of the dewatering cavity 1 from the water leakage holes 15 on the lower side wall of the dewatering cylinder 3 and then is discharged from the water discharge port at the bottom for centralized treatment of the sewage, the sewage discharged from the water leakage holes 15 of the dewatering cylinder 3 is subjected to double filtration by the first filter screen 13 and the second filter screen 14 in sequence to filter particle impurities of the sewage, thereby facilitating the later-stage sewage treatment and reuse, simultaneously, when the extrusion plate 17 compresses and extrudes the sludge, the crushing teeth 18 on the bottom surface of the extrusion plate 17 crush hard particles in the sludge, so that the dehydration efficiency of the sludge can be improved, and the extrusion plate 17 can be protected;
2) sludge dispersion treatment:
(1) sludge dehydrated by the dehydration cylinder 3 enters the inclined table 4 of the dispersion chamber 2 from the right end of the dehydration cylinder 3, the dispersion devices start to work simultaneously, the sludge on the inclined table 4 is dispersed by the dispersion devices, the rotating motor 20 drives the dispersion shaft 21 to rotate, so that the dispersion disc 22 is driven to rotate to disperse the extruded sludge, the extruded sludge is crushed into particles, the drying treatment of the subsequent sludge is facilitated, the dispersion rate of the sludge can be improved, the sludge treatment speed is accelerated, the quality of the subsequently treated sludge is better, and the working pressure of the drying box 7 is reduced;
(2) meanwhile, the dispersing device is cleaned periodically, the cleaning disc 24 moves downwards through the telescopic rod 23, the distance between the cleaning disc 24 and the dispersing device is shortened, water in the water tank 26 is conveyed into the telescopic rod 23 from the elastic conveying pipe 25 through the reverse suction pump, and finally enters the cleaning disc 24 and is sprayed out from the bottom surface of the cleaning disc 24, so that the dispersing device is cleaned.
3) Drying treatment of sludge:
(1) the dispersed sludge is conveyed to the interior of the drying box body 7 through the conveying belt to be dried;
(2) before the sludge enters the drying box 7, a heating device in the drying box 7 preheats the sludge, a heating wire 34 in a heating plate 33 heats the sludge and then radiates the sludge through a heat conduction hole 35 on the surface of the heating plate 33, so that the temperature in the drying box 7 reaches the drying temperature of the sludge;
(3) after the sludge enters the drying box body 7, the heating device continuously heats the sludge to dry the sludge, and meanwhile, the stirring device stirs the sludge to increase the surface area of the sludge so that heat is fully contacted with the sludge, thereby improving the drying effect and quality of the sludge;
(4) the dried sludge is further prolonged in drying time through the buffering effect of the elastic buffering plate 8, so that the drying effect of the sludge is better, and the sludge enters the sludge outlet groove 12 and is discharged from the sludge outlet groove 12.
4) Cleaning, checking and repairing:
regularly clear up and maintain the inside of dewatering cylinder 3, the inside of filter screen and drying cabinet 7, will glue glutinous residual sludge and impurity removal to the processing of follow-up mud of being convenient for.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (2)
1. The utility model provides a mud heating and drying system, includes pretreatment mechanism, transport mechanism and drying mechanism, its characterized in that: the pretreatment mechanism is communicated with the drying mechanism through the conveying mechanism, the pretreatment mechanism comprises a dewatering cavity and a dispersion cavity, the dewatering cavity and the dispersion cavity are sequentially arranged from left to right, a dewatering cylinder and an extrusion device are arranged in the dewatering cavity, a filter screen is arranged below the dewatering cylinder and comprises a first filter screen and a second filter screen, the diameter of a sieve mesh of the first filter screen is larger than that of a sieve mesh of the second filter screen, water leakage holes are uniformly formed in the lower side wall of the dewatering cylinder, permeable membranes are arranged on the water leakage holes, a left sealing ring is arranged at the left end of the dewatering cylinder, a feed hopper penetrates through the left sealing ring and extends into the dewatering cylinder, the right end of the dewatering cylinder is open, the right end of the dewatering cylinder extends into the dispersion cavity, and the extrusion device is arranged in the dewatering cylinder, the squeezing device comprises a squeezing cylinder, a squeezing plate and smashing teeth, the squeezing cylinder is located on the top surface of the dewatering cavity, a piston rod of the squeezing cylinder penetrates through the top surface of the dewatering cylinder and extends to the inside of the dewatering cylinder to be connected with the squeezing plate, the smashing teeth are evenly arranged on the bottom surface of the squeezing plate and fixedly connected with the squeezing plate through a mounting plate, an inclined table and a dispersing device are arranged in the dispersing cavity, the dispersing device comprises a rotating motor, a dispersing shaft and a dispersion disc, the rotating motor is connected with the dispersing shaft, the dispersing shaft penetrates through the surface of the inclined table to be connected with the dispersion disc, the dispersion disc is evenly arranged on the dispersing shaft, a cleaning device is arranged on the top surface of the dispersing device and comprises an expansion link and a cleaning disc, and the expansion link and the cleaning disc are hollow, the cleaning device comprises a cleaning disc, a telescopic rod, a water tank, a separating plate, a cleaning device and a dispersing device, wherein the telescopic rod is communicated with the cleaning disc, the lower end of the telescopic rod is connected with the cleaning disc and extends to the inside of the cleaning disc, the upper end of the telescopic rod is fixedly connected with the top side wall of the dispersing cavity, the upper end of the telescopic rod is connected with the water tank through an elastic conveying pipe, the water tank is positioned at the upper end of the right side of the dispersing cavity, the separating plate is arranged between the cleaning device and the dispersing device and comprises a frame plate and a sealing door plate, a perforation is arranged at the center of the frame plate and matched with the cleaning disc, the sealing door plate is positioned on the bottom surface of the frame plate, the diameter of the sealing door plate is larger than that of the perforation, the left end of the sealing door plate is fixedly, the bottom surface of the frame plate is provided with a second permanent magnet corresponding to the first permanent magnet, the first permanent magnet and the second permanent magnet attract each other, the conveying mechanism comprises a conveying belt and a support, the conveying belt passes through the support fixed support, the drying mechanism comprises a drying box body and a heating device, a stirring device and an elastic buffer plate are arranged inside the drying box body, the stirring device is positioned above the elastic buffer plate, the stirring device comprises a stirring motor, a stirring shaft and a frame type stirring paddle, the stirring motor is positioned at the upper end of the left side of the drying box body, the frame type stirring paddle is connected with the stirring motor through the stirring shaft, the elastic buffer plate is arranged in a left-right staggered mode, a sludge outlet groove is arranged below the elastic buffer plate, the heating device comprises a heating plate and a heating wire, and the heating wire is positioned in the heating plate, the heating plate is fixedly connected with the inner side wall of the drying box body, and heat conducting holes are uniformly formed in one side end face of the heating plate.
2. The drying method using the sludge heating and drying system according to claim 1, characterized by comprising the steps of:
1) primary sludge dewatering treatment:
the sludge is conveyed into a dewatering cavity for dewatering treatment, the sludge enters a dewatering cylinder from a feed hopper, an extrusion device starts to work, an extrusion cylinder drives an extrusion plate through a piston rod to compress and extrude the sludge in the dewatering cylinder, so that sewage in the sludge is discharged into the bottom of the dewatering cavity from water leakage holes in the lower side wall of the dewatering cylinder, and then is discharged from a water outlet in the bottom for centralized treatment of the sewage, the sewage discharged from the water leakage holes of the dewatering cylinder is subjected to double filtration by a first filter screen and a second filter screen in sequence, and particle impurities in the sewage are filtered, so that the sewage is conveniently treated and reused in the later period, and meanwhile, when the extrusion plate is used for compressing and extruding the sludge, crushing teeth on the bottom surface of the extrusion plate crush hard particles in the sludge, so that the dewatering efficiency of the sludge is improved, and the extrusion plate is protected;
2) sludge dispersion treatment:
(1) sludge subjected to dehydration treatment by the dehydration cylinder enters the inclined table of the dispersion chamber from the right end of the dehydration cylinder, the dispersion devices start to work simultaneously, the sludge on the inclined table is subjected to dispersion treatment by the plurality of dispersion devices, and the rotary motor drives the dispersion shaft to rotate, so that the dispersion disc is driven to rotate to perform dispersion treatment on the extruded sludge, the extruded sludge is crushed into particles, drying treatment of subsequent sludge is facilitated, the dispersion rate of the sludge is increased, the treatment speed of the sludge is increased, the quality of the subsequently treated sludge is better, and the working pressure of a drying box body is reduced;
(2) meanwhile, cleaning operation is carried out on the dispersing device at regular intervals, the cleaning disc moves downwards through the telescopic rod, the distance between the cleaning disc and the dispersing device is shortened, water in the water tank is conveyed into the telescopic rod from the elastic conveying pipe through the reverse suction pump, and finally the water enters the cleaning disc and is sprayed out from the bottom surface of the cleaning disc, so that the dispersing device is cleaned;
3) drying treatment of sludge:
(1) conveying the dispersed sludge to the inside of a drying box body through a conveying belt to perform drying treatment;
(2) before the sludge enters the drying box body, a heating device in the drying box body preheats the sludge, a heating wire in a heating plate heats the sludge and then the sludge is distributed out through heat conducting holes in the surface of the heating plate, so that the temperature in the drying box body reaches the drying temperature of the sludge;
(3) after the sludge enters the drying box body, the heating device continuously heats the sludge to dry the sludge, and meanwhile, the stirring device stirs the sludge to increase the surface area of the sludge and ensure that heat is fully contacted with the sludge, thereby improving the drying effect and quality of the sludge;
(4) the dried sludge is subjected to the buffering action of the elastic buffer plate, the drying time of the sludge is further prolonged, the drying effect of the sludge is better, and the sludge enters the sludge outlet groove and is discharged from the sludge outlet groove;
4) cleaning, checking and repairing:
regularly clear up and maintain the inside of dehydration section of thick bamboo, filter screen and the inside of drying box, will glue glutinous residual sludge and impurity removal to the processing of follow-up mud of being convenient for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710425560.5A CN107216012B (en) | 2017-06-08 | 2017-06-08 | Sludge heating and drying system and method |
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| CN201710425560.5A CN107216012B (en) | 2017-06-08 | 2017-06-08 | Sludge heating and drying system and method |
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| CN107216012A CN107216012A (en) | 2017-09-29 |
| CN107216012B true CN107216012B (en) | 2020-11-20 |
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