CN110776039A

CN110776039A - Sludge collecting and conveying device for air floatation and scum dehydration integrated equipment

Info

Publication number: CN110776039A
Application number: CN201911050569.8A
Authority: CN
Inventors: 柴晓利; 陆斌; 周政; 戴晓虎
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-11

Abstract

The invention provides a sludge storage and conveying device for air floatation and scum dehydration integrated equipment, which comprises: scrape the sediment machine, deposit sediment fill, screw conveyer and mud sediment pipeline, deposit the sediment fill and install under scraping sediment machine end, air supporting mud sediment is collected in depositing the sediment fill through scraping the sediment machine, deposits the bottom of sediment fill and has seted up the mud discharging hole, screw conveyer install in deposit the bottom of sediment fill, screw conveyer is used for depositing air supporting mud sediment propelling movement to the mud discharging hole in the sediment fill, and the mud discharging hole is used for being connected with the mud sediment hydroextractor through mud sediment pipeline, and the overhead gage of depositing the sediment fill is circular-arc for the indent with the terminal movement track laminating of scum board, and the lower part baffle of depositing the sediment fill is the evagination circular-arc, makes the sediment fill volume bigger, scrapes the mud clean smooth-going forward, has avoided the disturbance to the mud layer, is favorable to improving mud sediment collection efficiency. And set up screw conveyer, effectively solve the difficult, easy jam problem of advancing that air supporting mud sediment mobility is poor to lead to.

Description

Sludge collecting and conveying device for air floatation and scum dehydration integrated equipment

Technical Field

The invention relates to the field of air floatation, in particular to a sludge storage and conveying device for air floatation and scum dehydration integrated equipment.

Background

The air floatation technology is widely applied to the treatment of municipal sewage, oily wastewater and other sewage. The air floatation treatment of sewage can generate a large amount of scum, and the scum has high water content and needs to be dewatered and then subjected to subsequent treatment. In the conventional process, an air floatation scum collecting and treating system is operated separately, and scum is collected by a scum scraper and the like and then is conveyed to a scum dehydrator through a manual transfer or a sludge pump. The air floatation sludge collection and treatment link has low efficiency and high cost.

Disclosure of Invention

The invention aims to provide a sludge storage and conveying device for air floatation and scum dehydration integrated equipment, and aims to solve the problems that a scum scraping machine and the like need to convey the scum to a sludge dehydrator through manual transportation or a sludge pump after scum is collected, the air floatation sludge collection and treatment link is low in efficiency and high in cost.

In order to achieve the above purpose, the solution of the invention is as follows:

a sludge storage and conveying device for air floatation and scum dehydration integrated equipment,

the method comprises the following steps: scrape the sediment machine, deposit sediment fill and mud sediment pipeline, deposit the sediment fill install in scrape under the sediment machine tip, the air supporting mud sediment passes through scrape the sediment machine collect in deposit in the sediment fill, the mud discharging opening has been seted up to the bottom of depositing the sediment fill, the mud discharging opening intercommunication mud sediment pipeline, mud sediment pipeline is used for carrying the air supporting mud sediment to the mud sediment hydroextractor on.

Preferably, the upper baffle of the slag storage hopper is in an inward concave arc shape attached to the motion track of the tail end of the slag scraper, and the lower baffle of the slag storage hopper is in an outward convex arc shape.

Preferably, the inner wall of the slag storage hopper is coated with an anti-sticking coating to prevent air-floated sludge from adhering to the surface of the device.

Preferably, the device also comprises a screw conveyor, wherein the screw conveyor is arranged at the bottom of the residue storage hopper, and the screw conveyor is used for pushing the air-floatation sludge in the residue storage hopper to the sludge discharge port to avoid blockage.

Preferably, the bottom of the slag storage hopper is a cylindrical cavity.

Preferably, the device also comprises an electrode type liquid level meter and an intelligent control switch, wherein the electrode type liquid level meter is arranged on the slag storage hopper and is connected with the intelligent control switch so as to control the opening and closing of the screw conveyor and the sludge dehydrator.

Preferably, the inner wall of the slag storage hopper is provided with a first liquid level and a second liquid level, and the electrode type liquid level meter is used for detecting the position relation between the storage amount of the air-floatation sludge in the slag storage hopper and the first liquid level and the second liquid level, controlling the start and the stop of the screw conveyor and the sludge dehydrator and realizing high start and low stop.

Preferably, the washing device comprises a washing spray head and an air floatation tank, the washing spray head is arranged on the slag storage hopper, the washing spray head is connected with a water outlet of the air floatation tank through a washing pipeline, and the air floatation tank is used for providing high-pressure water flow to wash the slag storage hopper.

Preferably, the sludge conveying pipeline conveys sludge by gravity without pumping or manual transfer.

Due to the adoption of the scheme, the invention has the beneficial effects that:

1. the air-float sludge can be directly dewatered without conditioning, so that a secondary chemical adding system is omitted, and no secondary pollution is caused.

2. The arc-shaped slag storage bucket has larger volume and the upper part is attached to the track of the slag scraping plate, mud is scraped cleanly and smoothly, the disturbance to a mud layer is avoided, and the mud collecting efficiency is favorably improved.

3. The anti-sticking coating and the washing device effectively solve the problems of sludge adhesion and foam accumulation.

4. The screw conveyor can effectively solve the problems of difficult sludge feeding and easy blockage caused by poor flowability of the air floatation sludge.

5. The sludge conveying pipeline does not need pumping or manual transportation, and sludge enters the dewatering equipment in the conveying pipeline by virtue of gravity, so that the equipment and energy consumption are saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a front view of a sludge receiving and conveying device of the integrated air floatation scum dewatering equipment;

FIG. 2 is a top view of the sludge storage and transportation device of the integrated air floatation scum dehydration equipment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

wherein, in the figures, the respective reference numerals:

slag storage hopper-1 screw conveyor-2 electrode type liquid level meter-3 flushing device-4

A sludge conveying pipeline-5 sludge scrapers-6 sludge dewaterers-7 air floatation tanks-8

Upper baffle-11 lower baffle-12 mud discharging port-13 intelligent switch-31

A dissolved air water pipe-81 flushing pipe-41 flushing nozzle-42.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

Referring to fig. 1 and 2, the present invention provides a sludge storing and conveying apparatus for an integrated air flotation and scum dewatering apparatus, comprising: deposit sediment fill 1, screw conveyer 2, electrode type level gauge 3, washing unit 4, mud sediment pipeline 5, the cooperation is conventional scrapes sediment machine 6, mud sediment hydroextractor 7 and air supporting pond 8 and uses.

Referring to fig. 3, in the present embodiment, the slag storage hopper 1 is installed right below the end of the slag scraper 6, the screw conveyor 2 is installed at the bottom of the slag storage hopper 1, and the side surface of the bottom of the slag storage hopper is provided with the sludge discharge port 13 connected with one end of the sludge conveying pipeline 5. The other end of the sludge conveying pipeline 5 is connected with a sludge dehydrator 7, the electrode type liquid level meter 3 is installed on the sludge storage hopper 1, and the electrode type liquid level meter 3 is connected with the intelligent control switch to control the opening and closing of the screw conveyor and the sludge dehydrator. Specifically, the inner wall of the slag storage hopper is provided with a first liquid level and a second liquid level, and the electrode type liquid level meter is used for detecting the position relation between the storage amount of air-floatation sludge in the slag storage hopper and the first liquid level and the second liquid level, controlling the start and the stop of the screw conveyor and the sludge dehydrator, and realizing high start and low stop, for example, after sewage enters the air floatation tank 8 for treatment, water is discharged from a water outlet. Air floatation scum floating on the liquid level is collected to a scum depositing bucket 1 through a scum scraper 6, when the scum in the scum depositing bucket 1 reaches a second liquid level (starting liquid level) of an electrode type liquid level meter 3, an intelligent switch 31 starts a spiral conveyor 2 and scum dewatering equipment 8, the scum in the bucket is conveyed to a scum discharge port 13 by the spiral conveyor 2 at the bottom of the scum depositing bucket 1, and the scum in the bucket begins to reduce; when the sludge in the hopper is reduced to the first liquid level (shutdown liquid level) of the electrode type liquid level meter 3, it is worth mentioning that the first liquid level and the second liquid level are sequentially arranged from bottom to top in the sludge storage hopper 1, the position of the second liquid level is higher than that of the first liquid level, the intelligent switch 31 turns off the power supply of the screw conveyor 2, and the sludge conveying is stopped. The sludge automatically flows into the dewatering equipment 7 for dewatering from the sludge discharge port 13 by means of gravity, extrusion force and the like, so that the sludge dewatering machine is prevented from being worn due to no material load.

As shown in fig. 3, further, the upper baffle 11 of the slag storage bucket 1 is in an inward concave arc shape which is attached to the motion track of the slag scraping plate of the slag scraping machine, and the lower baffle 12 of the slag storage bucket 1 is in an outward convex arc shape, so that the capacity of the slag storage bucket is larger than that of a straight plate-shaped slag storage bucket with the same size; the mud scraping is clean and smooth, and no dead water area exists, so that the mud residue collecting efficiency is improved. Meanwhile, in order to prevent sludge from adhering to the slag storage hopper 1 and reduce the available volume, the inner wall of the slag storage hopper 1 is coated with an anti-sticking coating, for example, the inner wall is coated with a teflon coating.

Furthermore, in order to solve the problem that the foam on the surface of the sludge in the sludge storage hopper 1 is accumulated and overflows, a flushing device 4 is arranged. Washing unit is including washing shower nozzle 42 and flushing pipe 41, washing shower nozzle set up in deposit the sediment and fight, and be located deposit the upper portion that the sediment was fought, washing shower nozzle 42 with flushing pipe 41 links to each other, flushing pipe is used for the intercommunication and dissolves gas water pipeline 81 with the air supporting pond, utilizes the high pressure cleaning who dissolves in the gas water pipeline 81, need not extra water installations.

Specifically, for making things convenient for the equipment nimble to place, mud sediment pipeline 5 in this embodiment is PVC steel wire hose, and both ends are respectively with connecting row mud mouth 13 and dewatering equipment feed inlet.

Specifically, the air flotation tank referred to in this embodiment may be in various forms, including dissolved air flotation, electric air flotation, mechanical air flotation, and the like. The sludge dewatering machine in this embodiment may be a centrifugal dewatering machine or other dewatering equipment such as a stacked screw type sludge dewatering machine. The invention is suitable for air floatation tanks and dewatering equipment with different forms and models.

According to the technical scheme, the air flotation sludge is directly dehydrated without conditioning, a secondary dosing system is omitted, and secondary pollution is avoided. The arc-shaped slag storage bucket has larger volume and the upper part is attached to the track of the slag scraping plate, mud is scraped cleanly and smoothly, the disturbance to a mud layer is avoided, and the mud collecting efficiency is favorably improved. The anti-sticking coating and the washing device effectively solve the problems of sludge adhesion and foam accumulation. The screw conveyor can effectively solve the problems of difficult sludge feeding and easy blockage caused by poor flowability of the air floatation sludge. The sludge conveying pipeline does not need pumping or manual transportation, and sludge enters the dewatering equipment in the conveying pipeline by virtue of gravity, so that the equipment and energy consumption are saved.

The embodiments described above are intended to facilitate the understanding and appreciation of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a conveyor is received to mud sediment that is used for integrative equipment of air supporting dross dehydration which characterized in that includes: scrape the sediment machine, deposit sediment fill and mud sediment pipeline, deposit the sediment fill install in scrape under the sediment machine tip, the air supporting mud sediment passes through scrape the sediment machine collect in deposit in the sediment fill, the mud discharging opening has been seted up to the bottom of depositing the sediment fill, the mud discharging opening intercommunication mud sediment pipeline, mud sediment pipeline is used for carrying the air supporting mud sediment to the mud sediment hydroextractor on.

2. The sludge collecting and conveying device for the air flotation scum dewatering integrated equipment as claimed in claim 1, wherein the upper baffle of the sludge storage hopper is shaped like an inward arc fitted with the motion track of the tail end of the scum scraping machine, and the lower baffle of the sludge storage hopper is shaped like an outward arc.

3. The apparatus as claimed in claim 1, wherein the inner wall of the residue storage hopper is coated with an anti-sticking coating to prevent the air-floated sludge from adhering to the surface of the apparatus.

4. The mud residue collecting and conveying device for the integrated air floatation scum dehydration equipment as claimed in claim 1, further comprising a screw conveyor, wherein the screw conveyor is installed at the bottom of the residue storage hopper, and the screw conveyor is used for pushing the air floatation mud residues in the residue storage hopper to the mud discharge port to avoid blockage.

5. The sludge collecting and conveying device for the air floatation integrated scum dewatering equipment as claimed in any one of claims 1 to 4, wherein the bottom of the sludge storage hopper is a cylindrical cavity.

6. The sludge collection and conveying device for the air-flotation scum dehydration integrated equipment as claimed in claim 1, further comprising an electrode type liquid level meter and an intelligent control switch, wherein the electrode type liquid level meter is mounted on the sludge storage hopper and connected with the intelligent control switch so as to control the opening and closing of the screw conveyor and the sludge dehydrator.

7. The apparatus as claimed in claim 6, wherein the inner wall of the residue storage hopper has a first liquid level and a second liquid level, and the electrode level gauge is used for detecting the position relationship between the air-float sludge storage in the residue storage hopper and the first liquid level and the second liquid level, so as to control the start and stop of the screw conveyor and the sludge dewatering machine, and realize "high start and low stop".

8. The sludge collecting and conveying device for the integrated air floatation scum dehydration equipment as claimed in claim 1, further comprising a flushing device, wherein the flushing device comprises a flushing nozzle and a flushing pipeline, the flushing nozzle is arranged on the residue storage hopper, the flushing nozzle is connected with the flushing pipeline, and the flushing pipeline is used for communicating with a gas-dissolved water pipeline connected with a water outlet of the air floatation tank.

9. The sludge collecting and conveying device for the air floatation scum dehydration integrated equipment as claimed in claim 1, wherein the sludge conveying pipeline conveys the sludge by gravity and automatically without pumping or manual transportation.