CN211111149U

CN211111149U - Pulse type slag scraper

Info

Publication number: CN211111149U
Application number: CN201921814202.4U
Authority: CN
Inventors: 陆明宇; 纪烈勇; 李坚; 刘晓辉
Original assignee: SHANGHAI TRIUMPH ENERGY CONSERVATION ENGINEERING CO LTD
Current assignee: SHANGHAI TRIUMPH ENERGY CONSERVATION ENGINEERING CO LTD
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-28
Anticipated expiration: 2029-10-28

Abstract

The utility model relates to a water treatment facilities technical field specifically is a sediment ware is scraped to pulsed, scrape the sediment device and be the loop configuration, scrape the sediment device cover and locate on the shell, the vertical center department of locating circular air supporting pond of shell is equipped with the bearing in the shell, the bearing bottom is connected in the turbine, the other air supporting admission pipe and the air supporting admission pipe that are equipped with of turbine extend to the air supporting pond outside, scrape the sediment device and pass through compressed air admission union coupling in gas holder, be equipped with flowmeter and pneumatic control valve on the compressed air admission pipe. The utility model discloses compressed air in the gas holder can spray the air to the surface of water from scraping the sediment device with the form of pulse, forms at the surface of water and uses scraping the annular water ripple that the sediment device was the center to constantly along radially spreading all around to spill, in this breaks away the dross collecting vat to the dross with the surface of water dross, need not to wait that the dross forms certain thickness just start-up work, can realize removing the dregs in real time in succession, reduce to a certain extent and improved the efficiency that the air float process handled sewage.

Description

Pulse type slag scraper

Technical Field

The utility model relates to the technical field of water treatment facilities, specifically a pulsed scum ware.

Background

In the field of sewage treatment, the air flotation method is widely used as a day-to-day mature treatment method, after sewage enters an air flotation tank, the sewage is fed into a reaction zone to enable small suspended particles to be aggregated into large particles, then enters a contact zone filled with dissolved air water, micro-fine bubbles in the dissolved air water are attached to the surfaces of the suspended particles to form flocs with specific gravity smaller than that of the water, and the flocs enter a separation zone to enable the flocs to float out of the water surface to form waste residues. The mechanical reciprocating slag scraper needs to start up the operation when scum forms a certain thickness, can not realize real-time continuous slag removal, and reduces the sewage treatment efficiency of the air floatation method to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problems in the prior art and providing a pulse type slag scraper which can improve the sewage treatment efficiency of the air floatation method.

In order to achieve the aim, the pulse type slag scraper is characterized by comprising a slag scraping device,

the slag scraping device is of a circular ring-shaped structure and is sleeved on the shell, the shell is vertically arranged at the center of the circular air floatation tank, a bearing is arranged in the shell, the bottom end of the bearing is connected to the impeller, an air floatation steam inlet pipe is arranged beside the impeller and extends to the outside of the air floatation tank, the slag scraping device is connected to the air storage tank through a compressed air steam inlet pipe, and a flow meter and a pneumatic regulating valve are arranged on the compressed air steam inlet pipe.

Preferably, the floatation tank is provided with a scum collecting tank around along the circumferential direction thereof.

Preferably, the dross collection groove is opposite to the dross removal device.

Preferably, the upper part of the air floatation tank is provided with a water inlet groove in a surrounding way along the circumferential direction.

Preferably, the lower part of the air flotation tank is provided with a water outlet groove in a surrounding manner along the circumferential direction.

Preferably, the pneumatic regulating valve is controlled to be opened and closed by a pulse signal.

Preferably, annular rectifiers are uniformly arranged at the lower part of the air floatation tank.

Compared with the prior art, the utility model, its advantage lies in:

1. the utility model discloses compressed air provides power, through flowmeter and the pneumatic control valve on adjusting the compressed air admission pipe, compressed air in the gas holder can spray air to the surface of water from scraping the sediment device with the form of pulse, form the annular water ripple that uses scraping the sediment device as the center at the surface of water, and constantly expand to scattering all around along radial, with this break away the surface of water dross to the dross collecting vat in, need not to wait that the dross forms certain thickness and just start work, can realize removing the dregs in real time in succession, reduce to a certain extent and improve the efficiency that the air float process sewage;

2. the scum collecting tank of the utility model is of an annular structure, so that scum and foam carried by annular water ripples can be collected conveniently;

3. the utility model discloses the raw water evenly flows in the air supporting pond by annular intake chamber, and the treated water evenly flows out by annular play basin, and the intake chamber all adopts the annular with going out the basin, has greatly reduced the disturbance of business turn over water to the aquatic body in the air supporting pond, has guaranteed the air supporting performance to a certain extent.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a sectional view B-B of fig. 1.

As shown, in the figure:

1. the device comprises a turbine, 2, a rectifier, 3, an air flotation steam inlet pipe, 4, a water outlet groove, 5, a bearing, 6, a water inlet groove, 7, a slag scraping device, 8, a scum collecting groove, 9, a compressed air steam inlet pipe and 10, an air flotation tank.

Detailed Description

The structure and principle of such a device will be apparent to those skilled in the art from the following further description of the invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, 2 and 3, a pulsed scum scraper mainly comprises a floatation tank 10, a scum scraping device 7, an impeller 1, a floatation steam inlet pipe 3 and a compressed air steam inlet pipe 9, wherein the annular scum scraping device 7 is sleeved on a shell, the shell is vertically arranged at the center of the circular floatation tank 10, a bearing 5 is arranged in the shell, the bottom end of the bearing 5 is connected with the impeller 1, the impeller 1 is driven by the rotation of the bearing 5 to rotate together, and an annular rectifier 2 is uniformly arranged at the lower part of the floatation tank 10. The air-water flow mixture entering the machine chamber of the turbine 1 is fully stirred and cut by the impeller of the turbine 1 to become fine bubbles which are thrown out of the guide blades of the turbine 1 and are evenly and vertically lifted after energy dissipation by the rectifier 2.

The upper part and the lower part of the air floatation tank 10 are respectively provided with an annular water inlet tank 6 and an annular water outlet tank 4. Raw water uniformly flows into the air floatation tank 10 from the annular water inlet groove 6, treated water uniformly flows out from the annular water outlet groove 4, the water inlet groove 6 and the water outlet groove 4 are both annular, disturbance of inlet and outlet water to a water body in the air floatation tank 10 is greatly reduced, and air floatation performance is guaranteed to a certain extent.

An air floatation steam inlet pipe 3 is arranged beside the impeller 1, and the air floatation steam inlet pipe 3 extends to the outside of the air floatation tank 10. Air is introduced to the vicinity of the impeller 1 rotating at a high speed through the air floatation air inlet pipe 3, the introduced air is cut into fine bubbles through the high-speed shearing force of the impeller 1 rotating at a high speed, the bubbles after energy dissipation by the rectifier 2 are uniformly distributed, the bubbles are adhered to particles suspended in water in the floating process to form a water-gas-solid three-phase mixed system, and the particles are adhered to the bubbles and then float to the water surface with the density smaller than that of the water to form a scum layer.

The slag scraping device 7 is connected with the air storage tank through a compressed air inlet pipe 9, a flow meter and a pneumatic regulating valve are arranged on the compressed air inlet pipe 9, and the pneumatic regulating valve is controlled to be opened and closed through pulse signals. The compressed air provides power, and the flow meter and the pneumatic regulating valve are regulated to supply compressed air in a pulse form to the slag scraping device 7. Compressed air in the air storage tank is sprayed to the liquid level in the air floatation tank 10 by the residue scraping device 7 at a certain pressure, flow and time interval, annular water ripples which are centered on the residue scraping device 7 can be stably formed on the water surface, the residue scraping device 7 is right opposite to the scum collecting tank 8, namely, the height of the residue scraping device 7 from the bottom surface of the air floatation tank 10 is equal to the height of the scum collecting tank 8 from the bottom surface of the air floatation tank 10, and the water ripples can push a scum layer into the scum collecting tank 8. The scum collecting tank 8 is of an annular structure so as to collect scum and foam carried by the annular water ripples. In addition, the installation water depth, the pulse frequency and the strength parameters of the air jet of the slag scraping device 7 can be determined by engineering field debugging.

The utility model discloses can realize continuous automatic formula operation, need not shut down almost and wash, can in time clear away surface of water dross and other filths, the great degree is improved and is scraped sediment effect, is improved air floatation method and handles efficiency.

Claims

1. A pulse type slag scraper is characterized by comprising a slag scraping device,

2. The pulse slag scraper as claimed in claim 1,

the floatation tank is provided with a scum collecting tank along the circumferential direction.

3. The pulsed skimmer of claim 2 wherein said pulsed skimmer further comprises a plurality of baffles,

the scum collecting tank faces the scum scraping device.

4. The pulse slag scraper as claimed in claim 1,

and the upper part of the air floatation tank is provided with a water inlet groove in a surrounding way along the circumferential direction.

5. The pulse slag scraper as claimed in claim 1,

and a water outlet groove is formed in the lower part of the air floatation tank in a surrounding manner along the circumferential direction of the air floatation tank.

6. The pulse slag scraper as claimed in claim 1,

the pneumatic regulating valve is controlled to be opened and closed through a pulse signal.

7. The pulse slag scraper as claimed in claim 1,

and annular rectifiers are uniformly arranged at the lower part of the air floatation tank.