CN107758813A - A kind of slag scraping mechanism for sewage disposal - Google Patents

Abstract

The invention provides a slag scraping mechanism for sewage treatment, the slag scraping mechanism includes a disk assembly (1), a mud scraping strip assembly (2) and a mud strip assembly (3); the disk assembly (1) and The axes of the scraper assembly (2) are axially parallel to each other, and the distance between the axes is greater than the radius of the disk assembly (1); the mud strip assembly (3) is located on the disk assembly (1) On the upper surface of it, it is arc-shaped, and the center of this arc coincides with the center of revolution of the mud-scraping bar (2). The invention completely scrapes the flocculent sludge containing magnetic seeds from the magnetic disk equipment, and realizes the complete separation of the sludge and the magnetic equipment. It is not only suitable for the supermagnetic sewage treatment process, but also suitable for the sewage treatment process by adding magnetic seeds.

Description

A scraping mechanism for sewage treatment

technical field

The invention belongs to the field of sewage treatment, in particular to a slag scraping mechanism for completely scraping flocculent sludge containing magnetic seeds adsorbed on a magnetic disk.

Background technique

Magnetic separation is a technology that separates substances through the magnetic field attraction provided by magnets. It belongs to the physical separation method and was developed in the United States in the early 1970s. It can quickly separate magnetic impurities in the mixture. Magnetic separation uses waste water Magnetic separation of impurity particles in water, for non-magnetic or weakly magnetic particles in water, magnetic inoculation technology can make them magnetic. With the help of the external magnetic field, the magnetic suspended solids in the wastewater are separated, so as to achieve the purpose of purifying the water. Compared with conventional methods such as sedimentation and filtration, magnetic separation has a series of advantages such as large processing capacity, high efficiency, low energy consumption, simple and compact equipment, etc. It has not only been successfully applied to blast furnace gas washing water, steelmaking smoke and dust purification wastewater, steel rolling The purification of waste water and sintering waste water, and it has great development prospects in the purification of other industrial waste water, urban sewage and land water.

At present, in the ultra-magnetic sewage treatment process, flocculants and coagulants are added to the sewage, and fine magnetic seeds are added at the same time. The pollutants in the sewage form flocs containing magnetic seeds under the action of chemical agents, and contain When the sewage of the flocs passes through the specific magnetic equipment, the flocs will be absorbed by the magnetic equipment under the action of the magnetic field and separated from the magnetic equipment under the action of the separation mechanism, and then enter the specific floc breaking mechanism, so as to realize the separation of magnetic species and The separation of flocs achieves the purpose of magnetic seed recycling. The separation mechanism in the prior art cannot completely separate the flocs from the magnetic equipment, which will affect the adsorption of the flocs by the magnetic equipment after a period of time, reducing the sewage treatment efficiency.

Therefore, there is a need for a separation mechanism that can completely separate the flocs from the magnetic device.

Contents of the invention

In order to meet the needs of the prior art for completely separating the sludge from the magnetic equipment in the supermagnetic sewage treatment process. The invention provides a slag scraping mechanism for completely scraping flocculent sludge containing magnetic seeds from magnetic equipment.

The present invention is achieved through the following technical solutions: a slag scraping mechanism for sewage treatment, the slag scraping mechanism includes a magnetic disk assembly (1), a mud scraping strip assembly (2) and a mud strip assembly (3); the magnetic disk The shafts of the assembly (1) and the mud strip assembly (2) are axially parallel to each other, and the distance between the axes is greater than the radius of the disk assembly (1); the mud strip assembly (3) is located at the On the upper surface of the disk assembly (1), it is arc-shaped, and the center of the arc coincides with the rotation center of the mud scraper (2).

Preferably, the disk assembly (1) includes a disk (1-1), a disk fixing block (1-2) with a radius smaller than that of the disk (1-1) and concentric with it, and a disk fixing block (1-2) ) and the disk chuck (1-3) fixed to the disk (1-1).

Preferably, the magnetic disk 1-1 is made of the following components by mass percentage: 25.5%-27.0% Cr, 14.5%-16.0% Co, 3.0%-3.5% Mo, 0.5%-0.8% Ti , and the rest is Fe.

Preferably, the scraper assembly (2) includes a scraper (2-1) and a scraper fixing block (2-2) fixedly connected to the scraper (2-1); At least one mud scraping bar (2-1) is evenly distributed on the central circumference of the bar fixing block (2-2).

Preferably, the mud scraping strip 2-1 is made of the following components by mass percentage: 4.7% Zn, 1.4% Mg, 0.3Mn, 0.1% Cr, 0.1% Cu, 0.35% Fe, 0.30% Si.

Preferably, the mud scraper is welded to the mud scraper fixing block.

Preferably, the mud strip assembly (3) includes a friction block (3-1), a bracket (3-2), and a length greater than the radius difference between the disk (1-1) and the disk fixing block (1-2), and a mud strip (3-3), a pin shaft (3-4) and a mud strip fixed block (3-5) less than the radius of the magnetic disk (1-1).

Preferably, the mud stick is made of the following components by mass percentage: 4.5-5.6% Mg, 0.05-0.2% Mn, 0.05-0.2% Cr, 0.10% Cu, 0.40% Fe, 0.30% Si, 0.10% Zn, 0.15% Ti, 0.15% impurity, and the rest is Al.

Preferably, the fixing member is a bolt; the mud pocket 3-2 and the bracket 3-2 are fixed by countersunk screws.

Preferably, the friction block (3-1) is fixed on the top of the bracket (3-2) by a fixing member, and the mud pocket strip (3-3) is fixed on the circumference of the bracket (3-2), and the mud pocket The bar fixing block (3-5) is connected with the bracket (3-2) by a pin shaft (3-4).

Preferably, the rotation centers of the magnetic disk 1 and the mud scraper 2 are arranged at a certain distance and angle, the friction block 3-1 at the top of the mud strip 3 rides on the disk fixed block 1-2, and the mud strip fixed block at the other end 3-5 is fixedly connected with the external device through a fixing piece, and the mud strip 3-3 is closely attached to the surface of the magnetic disk 1-1.

Preferably, the fixing member is a bolt.

In the ultra-magnetic sewage treatment process, firstly, when the sewage containing magnetic seed flocs passes through the disk of the magnetic equipment, the flocs containing magnetic seeds will be adsorbed to the disk due to the action of the magnetic field. When the disk rotates clockwise, the mud strip scrapes the sludge containing magnetic seeds adsorbed on the disk into the mud strip, and then the sludge containing magnetic seeds in the mud strip is scraped into the mud strip when the mud scraper assembly rotates counterclockwise In a specific sludge conveying mechanism.

Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

1. The present invention utilizes the combined use of the mud scraping strip assembly and the mud strip assembly to completely scrape the flocculent sludge containing magnetic seeds from the magnetic disk equipment and completely separate the sludge from the magnetic equipment.

2. The mud scraping bar used in the present invention has high strength (360-400MPa), good stress resistance, corrosion performance and excellent welding performance; the mud scraping bar has good corrosion resistance, and the service life of the overall slag scraping mechanism long.

3. The present invention is applicable to various environments, not only to the supermagnetic sewage treatment process, but also to the sewage treatment process by adding magnetic seeds.

Description of drawings

Figure 1 Structural diagram of sludge scraping mechanism

Figure 2 Schematic diagram of the disk assembly structure

Figure 3 Schematic diagram of mud scraper assembly

Figure 4 Schematic diagram of the structure of the mud strip assembly

in:

1-disk assembly; 2-mud scraper assembly; 3-pocket mud assembly; 1-1 disk; 1-2 disk fixing block; 1-3 disk clamp block; 2-1 mud scraper; 2-2 mud scraper Bar fixed block; 3-1 friction block; 3-2 bracket; 3-3 pocket mud bar; 3-4 pin shaft; 3-5 pocket mud bar fixed block.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

1. The structure of the slag scraping mechanism of the present invention

As shown in Figure 1, a new type of scraper mechanism for sewage treatment includes a disk assembly 1, a mud scraper assembly 2, and a mud strip assembly 3;

As shown in Figure 2, the disk assembly includes a disk 1-1, a disk fixing block 1-2, and a disk clamping block 1-3; the disk 1-1 is fixed by the bolts of the disk fixing block 1-1 and the disk clamping block 1-3 as a whole.

As shown in Figure 3, the mud scraper assembly includes a mud scraper 2-1 and a mud scraper fixing block 2-2; the mud scraper 2-1 and the mud scraper fixing block 2-2 are connected by welding, and along the Three scraping mud strips 2-1 are evenly distributed on the central circumference of the pocket mud strip fixing block 2-2;

As shown in Figure 4, the mud strip assembly includes friction block 3-1, bracket 3-2, mud strip 3-3, pin shaft 3-4, mud strip fixing block 3-5; friction block 3- 1 is fixed on the top of the bracket 3-2 by bolts, the mud strip 3-2 is fixed on the circumference of the bracket 3-2 by countersunk screws, and the mud strip fixing block 3-5 is connected to the bracket by the pin shaft 3-4 Rack 3-2 connections.

The rotation centers of the disk 1 and the mud scraper 2 are arranged at a certain distance and angle, and the center of the arc section of the mud scraper 3 coincides with the rotation center of the mud scraper 2, and the friction block 3-1 at the top of the mud scraper 3 rests on the On the disk fixing block 1-2, the mud strip fixing block 3-5 at the other end is fixedly connected with the external device through bolts, and the mud strip 3-3 is closely attached to the surface of the disk 1-1.

The magnetic disk 1-1 is made of the following components by mass percentage: 6.0% Cr, 15.0% Co, 3.2% Mo, 0.7% Ti, and the rest is Fe.

The mud scraper 2-1 is made of the following components by mass percentage: 4.7% Zn, 1.4% Mg, 0.3Mn, 0.1% Cr, 0.1% Cu, 0.35% Fe, 0.30% Si.

The mud strip is made of the following components by mass percentage: 5.3% Mg, 0.16% Mn, 0.16% Cr, 0.10% Cu, 0.40% Fe, 0.30% Si, 0.10% Zn, 0.15% Ti , 0.15% impurity, and the rest is Al.

Two, the working process of the slag scraping mechanism of the present invention

When the sewage containing magnetic flocculent sludge passes through the clockwise rotating disk 1, under the action of the magnetic field, the sludge flocs containing magnetic seeds are adsorbed on the surface of the disk 1;

Along with the rotation of disk 1 (and when this new type is used for scraping slag mechanism normal operation of sewage treatment, pocket mud bar 3 is stationary) the flocculent sludge that contains magnetic seed is picked up by pocket mud bar 3 in the pocket mud bar 3- 3 is completely scraped off, while the mud scraper 2 rotates counterclockwise along the center, and the mud scraper 2-1 scrapes the scraped sludge in the mud pocket 3-3 into the sludge conveying mechanism, thus realizing The purpose of completely scraping off the sludge.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Those of ordinary skill in the art should understand that the specific implementation methods of the present invention can be modified or equivalently replaced with reference to the above embodiments. Any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention are within the protection scope of the claims of the present invention.

Claims (6)

1. a kind of slag scraping mechanism for sewage disposal, it is characterised in that the slag scraping mechanism includes DPU disk pack unit (1), scrapes mud Bar assembly (2) and pocket mud bar assembly (3)；The DPU disk pack unit (1) and scrape mud bar assembly (2) axle it is axially in parallel each other, and institute State the radius that the distance between axle center is more than the DPU disk pack unit (1)；The pocket mud bar assembly (3) is located at the DPU disk pack unit (1) Upper surface on, it is arc, and the arc center overlaps with scraping the centre of gyration of mud bar (2).

A kind of 2. slag scraping mechanism for sewage disposal as claimed in claim 1, it is characterised in that the DPU disk pack unit (1) It is less than disk (1-1) including disk (1-1), radius and is coaxial therewith the disk fixed block (1-2) of heart setting and is consolidated by disk Determine block (1-2) the disk fixture block (1-3) fixed with the disk (1-1).

3. a kind of slag scraping mechanism for sewage disposal as claimed in claim 1, it is characterised in that described to scrape mud bar assembly (2) include scraping mud bar (2-1) and with it is described scrape that mud bar (2-1) is fixedly connected scrape mud bar fixed block (2-2)；Fixed along pocket mud bar The center circumferential of block (2-2) is uniformly at least one to scrape mud bar (2-1).

A kind of 4. slag scraping mechanism for sewage disposal as claimed in claim 1, it is characterised in that the pocket mud bar assembly (3) semidiameter that brake pad (3-1), bracket (3-2), length are more than disk (1-1) and disk fixed block (1-2) is included, and it is small In the pocket mud bar (3-3), bearing pin (3-4) and pocket mud bar fixed block (3-5) of the radius of the disk (1-1).

A kind of 5. slag scraping mechanism for sewage disposal as claimed in claim 4, it is characterised in that the brake pad (3-1) Bracket (3-2) top is fixed on by fixture；The pocket mud bar (3-3) is fixed on bracket (3-2) circumference；The pocket Mud bar fixed block (3-5) is connected by bearing pin (3-4) with bracket (3-2).

6. a kind of slag scraping mechanism for sewage disposal as claimed in claim 1, it is characterised in that disk 1 is with scraping mud bar 2 Pivot is arranged with angle at a certain distance；The brake pad 3-1 on the top of pocket mud bar 3 is ridden on disk fixed block 1-2, Together with other end of pocket mud bar fixed block 3-5 is connected firmly with external equipment by fixture, pocket mud bar 3-3 and disk 1-1's Surface is brought into close contact.