CN110395874A - A kind of city sludge multistage high-speed screw line style extruding drying device - Google Patents
A kind of city sludge multistage high-speed screw line style extruding drying device Download PDFInfo
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- CN110395874A CN110395874A CN201910669964.8A CN201910669964A CN110395874A CN 110395874 A CN110395874 A CN 110395874A CN 201910669964 A CN201910669964 A CN 201910669964A CN 110395874 A CN110395874 A CN 110395874A
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- sludge
- line type
- heating space
- spiral line
- hot air
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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
-
- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of city sludge multistage high-speed screw line styles to squeeze drying device, including hothouse, sludge input mechanism and sludge output mechanism, heating space is equipped in hothouse, multiple coil pressing mechanism is set in heating space, multiple coil pressing mechanism includes the spiral line type extruder of layered arrangement above and below multistage, and the lower section of every layer of spiral line type extruder corresponds to and is disposed with hot wind spray head, sprays hot wind at the line style sludge item that hot wind spray head is squeezed out to corresponding spiral line type extruder；Hot air circulating system is further connected on hothouse, hot air circulating system includes the air outlet being connected to the heating space of hothouse, and air outlet connects hot air circulating pipe, and hot air circulating pipe is connect with hot wind spray head.The present invention is suitable for the drying of city sludge, and sludge is squeezed as line style sludge item by spiral line type extruder, and heating surface area can be increased in heating space, strengthens exchange rate, acceleration sludge dewatering, raising dehydration rate.
Description
Technical field
The present invention relates to sludge drying technique fields, and in particular to a kind of city sludge multistage high-speed screw line style extruding stem
Dry device.
Background technique
Sludge is a kind of porous dielectric substance of high-moisture, and untreated moisture percentage in sewage sludge is up to 95% or more.Especially
It is city sludge, since it combines moisture and free moisture to be all larger than general dried object, and physical aspect is such as micelle, cohesive force
Greatly, it therefore is not easy to be dehydrated, and it is big to consume energy, and can also give out stench, pollutes environment.With the increasingly serious and cities and towns of environmental requirement
Change the quickening of pace of construction, city sludge is treated as one and compels problem to be saved, and the water content for reducing sludge is sludge
Minimizing, recycling (agricultural, burn etc.) premise.
As the utility model patent of notification number CN203307193U discloses a kind of screw extrusion sludge dewatering equipment, including level
The sludge box of the tubular of placement, the right end of the sludge box have the sludge inlet of opening upwards, and the left end of the sludge box opens up
There is sludge outlet, and the lower part of the sludge box is made of strainer, the extruding screw with flabellum is provided in the sludge box, it should
The left end of extruding screw is connected with driving device, and the first terminals are provided on the extruding screw, are arranged on the strainer
There are the second terminals.The utility model is substantially increased de- by being respectively connected to positive and negative anodes charge on extruding screw and strainer
The efficiency of water, while also having the characteristics that dehydration is stable, noise is lower low with improvement cost.
As the patent of invention of notification number CN101913750A discloses a kind of sludge granulation dryer and method, the device packet
Screw extrusion granule-forming machine, spouted fluidized bed and dewatered sludge particle feed bin composition are included, screw extrusion granule-forming machine is by passing
Moving axis, screw feeder, sludge extrusion forming orifice plate and rotating blade, method are to be drawn spouted fluidized bed with intermediate bulkhead
It is divided into two regions of spouted bed and fluidized bed for keeping connection up and down, the wet mud that will be come out from screw extrusion granule-forming machine
Grain is downwardly into spouted bed from spouted bed bed face, and the sludge shaped granule after preliminarily dried flows from spouted bed lower openings
Fluidized bed bottom, another part hot gas medium, which enters fluidized bed from fluidized wind air inlet, does mud granule progress depth
Dry, the mud granule after drying moves upward to fluidized bed layer surface from fluidized-bed bottom, and last overflow goes out fluidized bed, enters
Dewatered sludge particle storehouse.
As the utility model patent of notification number CN202246357U discloses a kind of steam spiral sludge dewatering machine, including spiral shell
Extrusion chamber is revolved, screw extrusion room one end is equipped with into mud device, and the other end is equipped with mud discharging device, and the periphery of screw extrusion room is equipped with envelope
Shell is closed, the downside of screw extrusion room is equipped with filtrate collection bucket, is equipped with steam-heating system in screw extrusion room.The utility model
Dehydration and the primary completion of drying can be realized to sludge, are reduced equipment investment quantity, are saved floor occupying area, reduce material transfer, fit
Conjunction once carries out deep dehydration processing to the sludge of high throughput.
But above-mentioned technical proposal remains the problem of big energy consumption, costs and poor dehydration results.
Summary of the invention
The purpose of the present invention is to provide a kind of city sludge multistage high-speed screw line styles to squeeze drying device.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of city sludge multistage high-speed screw line style extruding drying device, including hothouse, sludge input mechanism and sludge are defeated
Mechanism out, the hothouse is interior to be equipped with heating space, sets multiple coil pressing mechanism, multiple coil pressing mechanism in heating space
Spiral line type extruder including layered arrangement above and below multistage, upper layer spiral line type extruder squeeze sludge for line style sludge item
It is discharged from discharge port, and falls into the feed inlet of adjacent lower spiral line type extruding, and the lower section of every layer of spiral line type extruder is equal
It is corresponding to be disposed with hot wind spray head, hot wind is sprayed at the line style sludge item that hot wind spray head is squeezed out to corresponding spiral line type extruder；
Wherein the feed inlet of the spiral line type extruder of top layer is connect with sludge input mechanism, and undermost spiral line type squeezes
The discharge port of machine is connect with sludge output mechanism；
It is further connected with hot air circulating system on the hothouse, hot air circulating system includes going out of being connected to the heating space of hothouse
Air port, air outlet connects hot air circulating pipe, and hot air circulating pipe is connect with hot wind spray head.
The hot air circulating pipe is pumped equipped with hot air circulation.
The hot air circulating pipe is equipped with hot air circulation control valve.
It is connected to exhaust duct on the hot air circulating pipe, air draft control valve is set on exhaust duct.
The heating space is enclosed by the heating layer for surrounding its setting, is also surrounded outside heating layer and is equipped with insulating layer.
The heating layer is heat pipe-type structure.
In the multiple coil pressing mechanism, the feed inlet of the spiral line type extruder of top layer is located at outside heating space,
And its discharge port is located in heating space；The inlet port and outlet port of remaining spiral line type extruder are respectively positioned on heating space.
The sludge input mechanism includes the sludge input channel connecting with the feed inlet of top layer spiral line type extruder,
Sludge front pump is arranged on sludge input channel；
The sludge output mechanism includes the closed discharger being correspondingly arranged with the discharge port of lowest level spiral line type extruder.
The inner wall of the heating space is equipped with non-sticky coating.
The air outlet is located at the upper half of heating space.
The beneficial effects of the present invention are:
1. being equipped with heating space in the present invention in hothouse, multiple coil pressing mechanism is set in heating space, spiral line type squeezes
Machine by sludge squeeze for line style sludge item from discharge port be discharged, during extrusion forming can temperature arrising caused by friction, obtain fast dewatering；
Simultaneously because spiral line type extruder squeezes sludge for line style sludge item, heating surface area can be increased in heating space, by force
Change exchange rate, accelerate sludge dewatering, improves dehydration rate；And what the line style sludge item fallen was also sprayed by hot wind spray head
Strength hot wind washes away, and can further strengthen exchange rate, improves dehydration rate.
Hot air circulating system is further connected on hothouse, the hot wind in heating space can be directed at through hot air circulating pipe by circulation
Hot wind spray head, hot wind are recycled, and low energy consumption, heat loss is small, and drying process will not excessive stench, the feature of environmental protection is good.
And air outlet is located at the upper half of heating space, can be improved exchange efficiency.
2. the multiple coil pressing mechanism in the present invention includes the spiral line type extruder of multiple layered arrangements up and down, can
Extend sludge in the indoor transport path of drying and time of delivery, enables sludge by enough heated-air dryings, improve drying
Time and drying efficiency.
3, heating space is enclosed by the heating layer for surrounding its setting in the present invention, is also surrounded outside heating layer and is equipped with heat preservation
Layer, low energy consumption, heat loss is small.The inner wall of heating space is additionally provided with non-sticky coating, can prevent sludge from adhering to.
4, sludge input mechanism includes that the sludge that connect with the feed inlet of top layer spiral line type extruder is defeated in the present invention
Enter pipeline, sludge front pump is arranged on sludge input channel；Sludge output mechanism includes and lowest level spiral line type extruder
The closed discharger that discharge port is correspondingly arranged facilitates and realizes closed feeding and discharging.
5, the feed inlet of the spiral line type extruder of top layer is located at outside heating space in the present invention, and its discharge port is located at
In heating space；The inlet port and outlet port of remaining spiral line type extruder are respectively positioned on heating space, guarantee that line style sludge item is complete
Under the premise of portion is in heating space, thermal losses is reduced to the greatest extent, improve resource utilization.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
It elaborates below in conjunction with attached drawing to a specific embodiment of the invention.
As shown in Figure 1, a kind of city sludge multistage high-speed screw line style of the invention squeezes drying device, including drying
Room, sludge input mechanism 1 and sludge output mechanism 14, hothouse is interior to be equipped with heating space 5.In the present embodiment, heating space 5 by
The heat pipe-type heating layer 3 for surrounding its setting encloses, and also surrounds outside heat pipe-type heating layer 3 and is equipped with insulating layer 2, low energy consumption,
Heat loss is small.The inner wall of heating space 5 is additionally provided with the non-sticky coating of nanometer, can prevent sludge from adhering to.
Multiple coil pressing mechanism is set in heating space 5, according to dry needs, multiple coil pressing mechanism be can be set to
It is more than second level, three-level or three-level.The multiple coil pressing mechanism of the present embodiment includes the helix of layered arrangement above and below three-level
Type extruder, respectively spiral line type extruder 4, spiral line type extruder 7 and spiral line type extruder 9, so as to extend
Sludge enables sludge by enough heated-air dryings, improves drying time in the indoor transport path of drying and time of delivery
And drying efficiency.Upper layer spiral line type extruder by sludge squeeze for line style sludge item from discharge port be discharged, and fall into it is adjacent under
The feed inlet of layer spiral line type extruder, and the lower section of every layer of spiral line type extruder correspondence is disposed with hot wind spray head, respectively
For hot wind spray head 5, hot wind spray head 8 and hot wind spray head 10, the line style that hot wind spray head is squeezed out to corresponding spiral line type extruder is dirty
Hot wind is sprayed at mud item.
Wherein the feed inlet of the spiral line type extruder 4 of top layer is connect with sludge input mechanism 1, sludge input mechanism 1
Including the sludge input channel connecting with the feed inlet of spiral line type extruder 4, sludge front pump is arranged on sludge input channel,
The discharge port of undermost spiral line type extruder 9 is connect with sludge output mechanism 14, and sludge output mechanism 14 is and helix
The closed discharger that the discharge port of type extruder 9 is correspondingly arranged facilitates and realizes closed feeding and discharging.
In the present embodiment, the feed inlet of spiral line type extruder 4 is located at outside heating space, and its discharge port is located at heating sky
Between in 5, the inlet port and outlet port of spiral line type extruder 7 and spiral line type extruder 9 are respectively positioned in heating space 5, are guaranteed
Line style sludge item all in heating space under the premise of, reduce thermal losses to the greatest extent, improve resource utilization.
Hot air circulating system is further connected on hothouse, hot air circulating system includes being connected to the heating space 8 of hothouse
Air outlet, air outlet are located at the upper half of heating space 5, can be improved exchange efficiency.Air outlet connects hot air circulating pipe, and
Hot air circulating pipe is connect with hot wind spray head 5,8,10.Hot air circulation pump 13 and hot air circulation are also equipped on hot air circulating pipe
Control valve 11.
And it is connected to exhaust duct on hot air circulating pipe, sets air draft control valve 12 on exhaust duct, when hot air circulation, row
Wind control valve 12 is closed, and hot air circulation control valve 11 is opened；When hot air circulation to a certain degree after humidity increase larger, openable row
Wind control valve 12 simultaneously closes hot air circulation control valve 11, and the higher hot wind of humidity is concentrated emission treatment.
Present invention is particularly suitable for the dryings of city sludge, select 35% or more sludge of moisture content to enter the device, can dry
To moisture content 25% or so.In the present embodiment, selecting the moisture content for entering the sludge of the device is 35%.
Working principle of the present invention is as follows: sludge first by sludge input mechanism 1 enter spiral line type extruder 4 into
Sludge is squeezed and is discharged for line style sludge item from discharge port, can rubbed during extrusion forming by material mouth, spiral line type extruder 4
Heating, obtains fast dewatering；And the line style sludge item squeezed out drops into the feed inlet of spiral line type extruder 7, the line fallen
The strength hot wind that type sludge item is also sprayed by hot wind spray head 6 washes away, and can further strengthen exchange rate, improves dehydration rate.
Then sludge is squeezed and is discharged for line style sludge item from discharge port by spiral line type extruder 7, and falls into spiral line type
The feed inlet of extruder 9 is washed away in the strength hot wind that this process line style sludge item is sprayed by hot wind spray head 8；Later, helix
Sludge is squeezed and is discharged for line style sludge item from discharge port by type extruder 9, and falls into closed discharger, in this process line style sludge
Item is washed away by the strength hot wind that hot wind spray head 10 sprays, and sludge is by continuous drying and dehydrating.
Simultaneously as spiral line type extruder 4,7,9 by the line style sludge item of extrusion in heating space 5 constantly to junior
Conveying is squeezed, line style sludge item can increase heating surface area in heating space, strengthen exchange rate, accelerate sludge dewatering, mention
High dehydration rate.
Hot air circulating system is further connected on hothouse, the hot wind in heating space 5 can be led through hot air circulating pipe by circulation
To hot wind spray head 6,8,10, hot wind is recycled, and low energy consumption, heat loss is small, and drying process will not excessive stench, ring
Guarantor property is good.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
In the description of the present invention, it is to be understood that, term "front", "rear", on ", "lower", the instruction such as "left", "right"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be only for ease of description the present invention and simplification retouch
It states, rather than indicates or imply signified device or element and must have a particular orientation, construct and operate for specific orientation,
It thus should not be understood as the limitation to present invention protection content.
Claims (10)
1. a kind of city sludge multistage high-speed screw line style squeezes drying device, including hothouse, sludge input mechanism and sludge
Output mechanism, it is characterised in that: it is equipped with heating space in the hothouse, sets multiple coil pressing mechanism in heating space, it is more
Grade screw extrusion machinery includes the spiral line type extruder of layered arrangement above and below multistage, and upper layer spiral line type extruder squeezes sludge
Pressure is that line style sludge item is discharged from discharge port, and falls into the feed inlet of adjacent lower spiral line type extruding, and every layer of spiral line type
The lower section of extruder is corresponding to be disposed with hot wind spray head, the line style sludge item that hot wind spray head is squeezed out to corresponding spiral line type extruder
Place sprays hot wind；
Wherein the feed inlet of the spiral line type extruder of top layer is connect with sludge input mechanism, and undermost spiral line type squeezes
The discharge port of machine is connect with sludge output mechanism；
It is further connected with hot air circulating system on the hothouse, hot air circulating system includes going out of being connected to the heating space of hothouse
Air port, air outlet connects hot air circulating pipe, and hot air circulating pipe is connect with hot wind spray head.
2. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: described
Hot air circulating pipe is pumped equipped with hot air circulation.
3. city sludge multistage high-speed screw line style according to claim 1 or 2 squeezes drying device, it is characterised in that:
The hot air circulating pipe is equipped with hot air circulation control valve.
4. city sludge multistage high-speed screw line style according to claim 3 squeezes drying device, it is characterised in that: described
It is connected to exhaust duct on hot air circulating pipe, air draft control valve is set on exhaust duct.
5. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: described
Heating space is enclosed by the heating layer for surrounding its setting, is also surrounded outside heating layer and is equipped with insulating layer.
6. city sludge multistage high-speed screw line style according to claim 5 squeezes drying device, it is characterised in that: described
Heating layer is heat pipe-type structure.
7. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: described
In multiple coil pressing mechanism, the feed inlet of the spiral line type extruder of top layer is located at outside heating space, and its discharge port position
In in heating space；The inlet port and outlet port of remaining spiral line type extruder are respectively positioned on heating space.
8. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: described
Sludge input mechanism includes the sludge input channel connecting with the feed inlet of top layer spiral line type extruder, sludge input channel
Upper arranging sludge front pump；
The sludge output mechanism includes the closed discharger being correspondingly arranged with the discharge port of lowest level spiral line type extruder.
9. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: described
The inner wall of heating space is equipped with non-sticky coating.
10. city sludge multistage high-speed screw line style according to claim 1 squeezes drying device, it is characterised in that: institute
State the upper half that air outlet is located at heating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669964.8A CN110395874B (en) | 2019-07-24 | 2019-07-24 | Multi-stage high-speed spiral line type extrusion drying device for urban sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669964.8A CN110395874B (en) | 2019-07-24 | 2019-07-24 | Multi-stage high-speed spiral line type extrusion drying device for urban sludge |
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| Publication Number | Publication Date |
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| CN110395874A true CN110395874A (en) | 2019-11-01 |
| CN110395874B CN110395874B (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954366A (en) * | 1975-01-06 | 1976-05-04 | Fields Reuben T | Two-stage single screw extrusion apparatus |
| CN101913750A (en) * | 2010-08-11 | 2010-12-15 | 东南大学 | Sludge granulation and drying device and method |
| CN105253978A (en) * | 2015-11-13 | 2016-01-20 | 黑龙江中科瑞合环保技术服务有限公司 | Mixed dewatering device and dewatering method for replacing flocculating agents with straw |
| CN205773998U (en) * | 2016-05-20 | 2016-12-07 | 东莞市绿革环保科技有限公司 | Highly effective sludge drying system |
| CN106390555A (en) * | 2016-10-11 | 2017-02-15 | 鹤壁职业技术学院 | Automatic screw-extrusion dewatering device |
| CN109516668A (en) * | 2018-12-19 | 2019-03-26 | 湖南大学 | A kind of new type low temperature hot wind sludge drying machine |
-
2019
- 2019-07-24 CN CN201910669964.8A patent/CN110395874B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954366A (en) * | 1975-01-06 | 1976-05-04 | Fields Reuben T | Two-stage single screw extrusion apparatus |
| CN101913750A (en) * | 2010-08-11 | 2010-12-15 | 东南大学 | Sludge granulation and drying device and method |
| CN105253978A (en) * | 2015-11-13 | 2016-01-20 | 黑龙江中科瑞合环保技术服务有限公司 | Mixed dewatering device and dewatering method for replacing flocculating agents with straw |
| CN205773998U (en) * | 2016-05-20 | 2016-12-07 | 东莞市绿革环保科技有限公司 | Highly effective sludge drying system |
| CN106390555A (en) * | 2016-10-11 | 2017-02-15 | 鹤壁职业技术学院 | Automatic screw-extrusion dewatering device |
| CN109516668A (en) * | 2018-12-19 | 2019-03-26 | 湖南大学 | A kind of new type low temperature hot wind sludge drying machine |
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