CN206089412U

CN206089412U - Excess sludge drying device of city treatment of domestic sewage factory

Info

Publication number: CN206089412U
Application number: CN201621142990.3U
Authority: CN
Inventors: 李琛; 唐志华
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2016-10-20
Filing date: 2016-10-20
Publication date: 2017-04-12
Anticipated expiration: 2026-10-20

Abstract

The utility model discloses an excess sludge drying device of city treatment of domestic sewage factory, include: sludge bucket, charging means, superheated steam drying chamber, drying cabinet, screw rod, drive mechanism, drying cabinet, upper cover, box, agitator, discharge gate, flapper, superheated steam inlet, blast pipe. Compared with the prior art, the utility model has the advantages of the utility model discloses simple structure, it is efficient to dewater, and the heat transfer is effectual, and mud is difficult caking in dry run, is difficult for gluing the wall.

Description

A kind of city domestic sewage processes plant excess sludge drying device

Technical field

The utility model is related to a kind of mud drying device, belongs to environmental technology field, more particularly to a kind of dirt of urban life Water treatment plant's excess sludge drying device.

Background technology

The widely used activated sludge process of city domestic sewage treatment plant of China, the technique has stable, hydraulic load Greatly, the low advantage of operating cost, but, again substantial amounts of excess sludge can be produced simultaneously during the process operation, in these sludge Containing substantial amounts of organic matter, cellulosic, protein etc., with wide resource and recovery energy prospect.But, city life The moisture content of sewage treatment plant residual sludge living is 99.5% or so, even if the evaporation plant dehydration of Jing city domestic sewages treatment plant Sludge afterwards, still 80% or so, this present situation constrains city domestic sewage and processes plant excess sludge its moisture content significantly Resource and recovery energy, accordingly, it would be desirable to be further dried to the sludge of city domestic sewage treatment plant preliminary hydro-extraction, reduce Its moisture content.Conventional sludge drying technique has sludge drying bed, solar energy desiccation and an external heat source mummification, sludge drying bed and Solar energy desiccation technology carries out mummification, the major defect of this kind of technology to sludge by gravity-flow ventilation, Action of Gravity Field and solar energy It is that drying time is long, efficiency is low, is easily affected by weather and weather, easily causes air pollution.External heat source drying technique is then needed Extra thermal source is provided, accelerates the evaporation of moisture in sludge, realize the mummification of sludge, this kind of technology needs to be additionally provided heat Source, can preferentially use when having industrial exhaust heat near sludge drying bed, in the case where industrial exhaust heat is lacked, can pass through excellent Change energy resource supply mode, improvement drying process to improve mummification effect, reduce energy resource consumption.Superheat steam drying is one new dry Dry technology, it directly removes a kind of drying mode of moisture removal using superheated steam with being contacted by dry material, with superheated steam work For a kind of convective drying mode of dried medium, it is particularly suitable for high moisture content, enormous amount and is worth the drying of relatively low product Process, it is adaptable to the drying of excess sludge.But, because sludge is that a kind of moisture content is high, the paste that viscosity is big, loose porous Matter, after the drying easily viscous wall caking phenomenon in the phase to traditional Sluge over-heated steam drying device there is, and serious hinders in sludge The drying of portion's moisture.Therefore, the utility model is by drying device structure design, overcome caking in overheating steam drying process, Wall sticking phenomenon.

Utility model content

The purpose of this utility model be that in order to solve existing city domestic sewage excess sludge desiccation apparatus high energy consumption, Dewatering efficiency is low, be easy to viscous wall in dry run, the shortcoming of caking and a kind of city domestic sewage is provided and processes plant excess sludge Drying device.

The utility model is achieved through the following technical solutions above-mentioned purpose：A kind of city domestic sewage treatment plant is remaining dirty Mud drying device, including sludge bucket 1, feeder 2, superheat steam drying chamber 3, drying box 4 constitute, wherein, 2 centers of feeder Screw rod 21 is axially installed with, the end of screw rod 21 is provided with transmission mechanism 22, and drying box 4 is made up of upper lid 41 and casing 42, casing 42 Be axially installed with agitator 421, the end bottom of casing 42 is provided with discharging opening 422, and discharging opening is provided with flapper 4221, upper lid 41 are provided with superheated steam entrance 411 and blast pipe 412.

Sludge bucket 1 is connected to feeder 2 by flange seal, and end and the superheat steam drying chamber 3 of feeder 2 pass through method Orchid is tightly connected, and superheat steam drying chamber 3 is connected to superheated steam entrance 411, blast pipe with drying box 4 by flange seal 412 are connected in upper lid 41 by flange seal, and discharging opening 422 is adopted with casing 42, discharging opening 422 and turnover plate type valve 4221 Flange seal connects, and blast pipe 412 passes through hinge and screw threads for fastening by the upper lid 41 of flange seal connection, upper lid 41 and casing 42 Part is fixedly connected, and contact surface is sealed using wedge-shaped slot sealing surface.

Described feeder is screw feeder.

Described transmission mechanism is preferably chain type transmission mechanism.

Described agitator is arm stirrer.

Described flapper is Weight type flapper.

The beneficial effects of the utility model are：The utility model simple structure, dewatering efficiency is high, good effect of heat exchange, dirty Mud is prevented from caking in dry run, wall not easy to stick.

Description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the utility model auger structure schematic diagram.

Fig. 3 is the utility model drying box structural representation.

Fig. 4 is the utility model A-A sectional schematic diagrams.

Fig. 5 is the utility model flapper structural representation.

In Fig. 1 ~ 5：1- sludge buckets, 2- feeders, 3- superheat steam dryings chamber, 4- drying boxes, 21- screw rods, 22- drivers Lid, 42- casings, 421- agitators, 422- discharging openings, 4221- flappers, 411- superheated steams enter on structure, 4- drying boxes, 41- Mouth, 412- blast pipes.

Specific embodiment

Below in conjunction with the accompanying drawings 1 ~ 5 the utility model is described in further detail：As shown in Fig. 1 ~ 4：The utility model includes dirt Bucket 1, feeder 2, superheat steam drying chamber 3, drying box 4, screw rod 21, transmission mechanism 22, drying box 4, upper lid 41, casing 42nd, agitator 421, discharging opening 422, flapper 4221, superheated steam entrance 411, blast pipe 412.

As shown in Fig. 1 ~ 5：Sludge Jing sludge buckets 1 after sludge from wastewater treatment plant evaporation plant preliminary hydro-extraction are entered and added Glassware 2, under the rotation and promotion of screw rod 21, sludge is dried in superheated steam drying chamber 3, and under gravity In falling into drying box 4, sludge and superheated steam are fully contacted in drying box 4, and the moisture in sludge is able to from sludge Spin off, sludge in drying box 4 under the stirring of agitator 421 to another end motion of drying box 4, do in motion It is dry, due to the stirring of blade, make sludge loose, it is easy to the evaporation of internal moisture, drying efficiency is high, simultaneously because the stirring of blade Effect, sludge is not allowed to be also easy to produce caking phenomenon and wall sticking phenomenon when being dried under superheated steam effect, as sludge is pushed ahead, Drying sludge process is gradually completing, and dried sludge is pushed to discharging opening, when the sludge accumulation in discharging opening is to certain weight After amount, flapper turnover panel is opened, and sludge is discharged, and the superheated steam after heat exchange is then discharged by blast pipe, is reclaimed into heat exchanger Discharge after heat energy.

Claims

1. a kind of city domestic sewage processes plant excess sludge drying device, it is characterised in that：Including：（1）Sludge bucket,（2）Plus Glassware,（3）Superheat steam drying chamber,（4）Drying box,（21）Screw rod,（22）Transmission mechanism,（4）Drying box,（41）Upper lid, （42）Casing,（421）Agitator,（422）Discharging opening,（4221）Flapper,（411）Superheated steam entrance,（412）Blast pipe.

2. a kind of city domestic sewage according to claim 1 processes plant excess sludge drying device, it is characterised in that：Institute The central axial of the feeder stated is provided with described screw rod.

3. a kind of city domestic sewage according to claim 1 processes plant excess sludge drying device, it is characterised in that：Institute The drying box stated is made up of described upper lid and described casing, and described upper lid and described casing is tight by hinge and screw thread Firmware is fixedly connected, and contact surface is sealed using wedge-shaped slot sealing surface, and described casing is axially installed with described agitator.

4. a kind of city domestic sewage according to claim 1 processes plant excess sludge drying device, it is characterised in that：Institute The transmission mechanism stated is preferably chain type transmission mechanism.

5. a kind of city domestic sewage according to claim 1 processes plant excess sludge drying device, it is characterised in that：Institute The agitator stated is arm stirrer.

6. a kind of city domestic sewage according to claim 1 processes plant excess sludge drying device, it is characterised in that：Institute The flapper stated is Weight type flapper.