CN101857347B

CN101857347B - Sludge ultrasonic roller drier

Info

Publication number: CN101857347B
Application number: CN2010101724604A
Authority: CN
Inventors: 陈振乾; 赵芳
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2010-05-14
Filing date: 2010-05-14
Publication date: 2012-09-05
Anticipated expiration: 2030-05-14
Also published as: CN101857347A

Abstract

The invention discloses a sludge ultrasonic roller drier. A drying cylinder is provided with a feeding opening, an exhaust opening, an ultrasonic probe and a discharging opening, wherein the ultrasonic probe is inserted into the drying cylinder and is connected with an ultrasonic generator; a hot air generator is connected with the drying cylinder; the drying cylinder is sleeved with a gear ring and a rolling ring; the rolling ring is arranged on a riding wheel and is supported by the riding wheel; the drier also comprises an adjustable speed motor; and the output shaft of the adjustable speed motor is provided with a gear which is engaged with the gear ring. In the process of drying, sludge is stirred continuously along with the rotation of the drying cylinder so as to finish drying under the combined action of ultrasonic wave and a hot air device. Due to the adoption of the sludge ultrasonic roller drier, the shortcomings of low efficiency, high operating cost and the like in the conventional sludge drying equipment are overcome; dewatering performance of the sludge is improved in a short period; a drying rate is improved; treating cost is reduced; and simultaneously sludge floc particles become uniform and fine by the ultrasonic wave so as to contribute to post sludge resource treatment and improve energy ultilization rate.

Description

A kind of sludge ultrasonic roller drier

Technical field

The present invention relates to technical field of drying, be applicable to the dry field of mud, coal slime, slag and solid waste, relate in particular to a kind of sludge ultrasonic roller drier.

Technical background

Mud is the secondary product of WWT, along with the raising year by year of China's treatment rate of domestic sewage, and the corresponding rapid increase of the output of mud.Contain heavy metals such as a large amount of pathogenic micro-organisms and lead, cadmium, mercury, copper, zinc in the mud, environment is caused very big pollution.The processing of mud has become current social and has pressed for one of subject matter of solution, and it is the major obstacle that faces in the current sludge treatment that moisture percentage in sewage sludge height, viscosity reach the solid-liquid separation poor performance greatly.Moisture percentage in sewage sludge reaches more than 95% usually; High-moisture percentage causes sludge volume huge, has increased the transportation cost and the facility expense of treating processes, simultaneously because the existence of moisture; Mud is prone to metamorphic reaction takes place, and brings a series of environmental problems such as stench, water body and soil pollution.The mechanical dehydration that adopts at present; Can make moisture percentage in sewage sludge on average reduce to about 80%; Can not fundamentally change the handlability of mud, subsequent disposal such as landfill, compost and burning need drop to water ratio below 60%, therefore; How efficient moisture percentage in sewage sludge is further reduced, become the key issue of the effective treating processes of mud.

Because constituent is complicated and contain a large amount of zoogloeas in the mud, contains and is difficult to remove planar water and combination water in a large number, present existing sludge drier running cost is higher and drying efficiency is low.To the weak point of existing sludge drier, the present invention proposes a kind of ultrasonic roller drier, utilizes hyperacoustic cavitation effect, mechanical effect and heat effect; Destroy zoogleic structure and microbial cell wall in the mud, difficult planar water, the combination water that breaks away from the mud become free water, improved the dewatering of mud at short notice; Under the hot gas flow effect of lesser temps; Also can reach dry requirement, and keep higher drying rate, effectively reduce processing cost.UW changes the mud internal structure simultaneously, and it is evenly tiny that the mud floc particle becomes, and helps the recycling treatment of the mud in later stage, has effectively remedied the weak point of existing sludge drier.

Summary of the invention

The objective of the invention is to propose a kind of sludge ultrasonic roller drier that helps drying sludge.

The present invention adopts following technical scheme to be achieved:

A kind of sludge ultrasonic roller drier comprises: drying cylinder is provided with opening for feed, venting port, ultrasonic probe and discharge gate on drying cylinder; Described ultrasonic probe inserts in the drying cylinder and ultrasonic probe is connected in ultrasonic generator, on drying cylinder, is connected with heat blower, on drying cylinder, is arranged with gear ring and rolling ring; Rolling ring is located on the support roller and by support roller and supports; Said moisture eliminator also comprises buncher, on the output shaft of buncher, is provided with gear, and gear is meshed with gear ring.

The present invention adopts technique scheme, compared with prior art has following advantage:

Since in the mud constituent complicated and contain a large amount of zoogloeas, present existing sludge drier running cost is higher and drying efficiency is low.To the weak point of existing sludge drier, a kind of ultrasonic roller drier that the present invention proposes utilizes hyperacoustic cavitation effect, mechanical effect and heat effect; Destroy zoogleic structure and microbial cell wall in the mud, difficult planar water, the combination water that breaks away from the mud become free water, improved the dewatering of mud; Under the hot gas flow effect of lesser temps; Also can reach dry requirement, and keep higher drying rate, effectively reduce processing cost.

2. ultrasonic technology and rotating drum dryer are organically combined, ultrasonic cumulative probe is embedded in the mud, and ultrasonic energy is concentrated; Improve the dewatering of mud in short period of time, effectively reduce processing cost, because UW changes the internal structure of mud; It is evenly tiny that the mud floc particle becomes; Impurity in the mud is broken, helps the recycling treatment of the mud in later stage, has effectively improved energy utilization rate.

3. in the drying sludge process, mud rotates and constantly stirs with drying cylinder, and UW and hot blast have improved drying efficiency to mud even action and abundant, have shortened the sludge treatment time.

4. compact equipment is simple to operation.

Description of drawings

Fig. 1 is a sludge ultrasonic roller drier structural representation of the present invention.

Fig. 2 is the right view of sludge ultrasonic roller drier A-A section of the present invention.

Wherein: 1-opening for feed, 2-venting port, 3-drying cylinder, 4-rolling ring, 5-ultrasonic probe, 6-ultrasonic generator, 7-heat blower, 8-discharge gate, 9-buncher, 10-gear, 11-gear ring, 12-support roller.

Embodiment

With reference to the accompanying drawings, specific embodiments of the present invention is made more detailed explanation:

Like Fig. 1, shown in Figure 2; A kind of sludge ultrasonic roller drier is provided with opening for feed 1, venting port 2, ultrasonic probe 5 and discharge gate 8 on drying cylinder 3, described ultrasonic probe 5 inserts in the drying cylinder 3 and ultrasonic probe 5 is connected in ultrasonic generator 6; On drying cylinder 3, be connected with heat blower 7; On drying cylinder 3, be arranged with gear ring 11 and rolling ring 4, rolling ring 4 is located on the support roller 12 and by support roller 12 supportings, said moisture eliminator also comprises buncher 9; On the output shaft of buncher 9, be provided with gear 10, gear 10 is meshed with gear ring 11.

Like Fig. 1, shown in Figure 2; The quantity of ultrasonic probe 5 of the present invention is at least 2; Said ultrasonic probe 5 is along the axial array of drying cylinder 3, and the projection of said ultrasonic probe 5 in the axial vertical plane of drying cylinder 3 intersect, and the quantity of said ultrasonic probe 5 specifically can be 2,5,8 etc.; The ultrasonic frequency of being sent by ultrasonic probe 5 is 10-200kHz.

Like Fig. 1, shown in Figure 2; Buncher 9 is a clockwise and anticlockwise motor; Drying cylinder 3 central axis and horizontal plane angle are 0～5 °; Opening for feed 1 and discharge gate 8 are arranged at the two ends of drying cylinder 3 respectively, and drying cylinder 3 ends at opening for feed 1 place are higher than drying cylinder 3 ends at discharge gate 8 places, and material is along with the rotation of drying cylinder 3 arrives discharge end under action of gravity.

As shown in Figure 1, heat blower 7 of the present invention places drying cylinder 3 ends at discharge gate 8 places, and hot blast becomes counter current contact with material.Hot air apparatus waste heat also capable of using, used heat and flue gas replace.

Like Fig. 1, shown in Figure 2, sludge ultrasonic roller drier of the present invention, in the drying process, when drying cylinder 3 rotated, ultrasonic probe 5 cooperated with mud in the drying cylinder 3 with heat blower 7, accomplishes the drying process of mud jointly.Number that ultrasonic probe 5 is opened and correspondent frequency, power can freely be set according to the state and the treatment capacity of wet stock.

Claims

1. sludge ultrasonic roller drier, comprising: drying cylinder (3) is characterized in that; On drying cylinder (3), be provided with opening for feed (1), venting port (2), ultrasonic probe (5) and discharge gate (8); Described ultrasonic probe (5) inserts in the drying cylinder (3) and ultrasonic probe (5) is connected in ultrasonic generator (6), on drying cylinder (3), is connected with heat blower (7), on drying cylinder (3), is arranged with gear ring (11) and rolling ring (4); Rolling ring (4) is located at support roller (12) and goes up and supported by support roller (12); Said moisture eliminator also comprises buncher (9), on the output shaft of buncher (9), is provided with gear (10), and gear (10) is meshed with gear ring (11).

2. sludge ultrasonic roller drier according to claim 1; It is characterized in that; The quantity of ultrasonic probe (5) is at least 2, and said ultrasonic probe (5) is along drying cylinder (3) axial array, and the projection of said ultrasonic probe (5) in the axial vertical plane of drying cylinder (3) intersected.

3. sludge ultrasonic roller drier according to claim 1 is characterized in that, the ultrasonic frequency of being sent by ultrasonic probe (5) is 10-200kHz.

4. sludge ultrasonic roller drier according to claim 1; It is characterized in that; Buncher (9) is a clockwise and anticlockwise motor; Drying cylinder (3) central axis and horizontal plane angle are 0～5 °, and opening for feed (1) and discharge gate (8) are arranged at the two ends of drying cylinder (3) respectively, and drying cylinder (3) end at opening for feed (1) place is higher than drying cylinder (3) end at discharge gate (8) place.

5. sludge ultrasonic roller drier according to claim 1 is characterized in that, heat blower (7) places drying cylinder (3) end at discharge gate (8) place.