CN100553729C - Automatic sewage decontamination machine - Google Patents

Abstract

A fully automatic sewage decontamination machine, which is used in the sewage filtration process of the sewage source heat pump system, mainly consists of a cylindrical filter, a decontamination scraper, a shaft, a decontamination machine shell, a sewage water separator, an upper cover, a lower Composed of cover plates, partitions and other components. The rotatable decontamination scraper is installed to ensure that there is no dead corner for accumulation of dirt and debris, and to scrape off fibrous dirt and debris on the filter such as animal hair. There is also a sewage water separator, which cooperates with the rotation of the decontamination scraper to realize the water supply of impurity-containing sewage inside the cylindrical filter, the sewage after decontamination is supplied from the outside of the cylinder, and the sewage is returned from the outside of the cylindrical filter after heat exchange. After backwashing, the impurity-containing sewage is discharged from the cylindrical filter. The device of the present invention does not need to be manually opened regularly for decontamination during the working process, and the automatic decontamination function is realized.

Description

Automatic sewage decontamination machine

technical field

The invention relates to a sewage decontamination device, in particular to a fully automatic decontamination machine for filtering sewage impurities in a primary sewage source heat pump system.

Background technique

With the rapid promotion of water source heat pump technology in my country, the primary sewage source heat pump technology has also been developed and applied to a certain extent. This technology obtains heat from urban raw sewage in winter and releases heat in summer, utilizing renewable energy and realizing a circular economy. The biggest problem in using urban raw sewage as the cold and heat source of heat pump air-conditioning units is how to prevent pollution and blockage of pipelines and heat exchange equipment by sewage containing impurities. The patent application number is: 200410043654.9. The invention patent provides a decontamination device that blocks impurities in sewage. The device is composed of a shell, a cylindrical grille filter and a transmission device that drives the cylindrical grille filter to rotate. , the inside of the shell is divided into a water supply area and a return water area. The cylindrical grille filter screen divides the return water area into an inner backwater area and an outer backwater area. The end of the sewage suction pipe is connected to the outer water supply area. The end of the sewage return pipe communicates with the backwater area outside the cylinder. The device basically realizes the blocking of impurities in sewage, but in actual operation, it is easy to form some dead spots for accumulation of impurities in the device, and it does not have the function of removing fibrous impurities such as animal hair and other impurities. Such impurities hanging on the grid filter cannot be washed away, and the filter screen will be blocked, so the device needs to be opened regularly for manual cleaning.

Contents of the invention

In order to solve the problem that the above-mentioned device needs to be manually cleaned regularly, and the hair is not easy to wash off when it hangs on the filter screen, the present invention provides a fully automatic sewage decontamination device. A rotatable decontamination scraper is installed in the device to ensure no pollution. If there is a dead corner where dirt and debris accumulate, scrape off the fibrous dirt on the filter, such as animal hair. A sewage water separator is also set up to cooperate with the rotation of the decontamination scraper to realize the water supply of impurity-containing sewage inside the cylindrical filter, the sewage after decontamination is supplied from the outside of the cylinder, and the sewage is returned from the outside of the cylindrical filter after heat exchange , After backwashing, the impurity-containing sewage is discharged from the cylindrical filter.

The automatic sewage decontamination machine of the present invention is mainly composed of a cylindrical filter screen, a decontamination scraper, a shaft, a decontamination machine shell, a sewage water separator, an upper cover plate, a lower cover plate, a partition and other components. The cylindrical filter screen is divided into 4 parts in the axial direction by the decontamination scraper. The space between the shell of the decontamination machine and the cylindrical filter screen is divided into two parts by a partition welded on the inner wall of the shell of the decontamination machine, and the volume ratio is 3:1.

The raw sewage of the sewage main channel is pumped by the pipeline through the submersible pump to the automatic decontamination machine, and enters the three filter chambers in the cylindrical filter through the sewage outlet set in the sewage water separator. Under the action of pressure, the impurities in the sewage The waste is isolated into the filter chamber by the filter screen, and the filtered sewage enters the water supply chamber between the shell and the cylindrical filter screen, and then the water supply port on the shell provides a low-temperature heat source to the sewage heat exchanger, and the sewage passes through the heat exchanger after heat exchange. The water return port returns to the backwash chamber between the casing and the cylindrical filter, and enters the sewage chamber through the filter under the action of water pressure, backwashes away impurities in the sewage chamber and hair on the filter, and flows out through the drain. Then it is discharged through the pipeline to the downstream of the water intake of the main sewage canal.

While the raw sewage is being filtered, the cylindrical filter screen is driven by the rotating filter cartridge to drive the motor and adjusted by the reducer to drive the cylindrical filter screen to rotate through the connecting shaft, so that 75% of the entire cylindrical filter screen is in the filtering area. 25% of the filter screen is in the backwash area, which realizes the continuous cleaning of the filter surface without stopping the machine. When the cylindrical filter rotates, the dirt hanging on the cylindrical filter is scraped off by the decontamination scraper and floats in the filter chamber. When the accumulated dirt reaches a certain level, the decontamination scraper is driven by the motor and passes through the After the transmission gearbox is adjusted, it outputs a 90-degree rotation action, and the dirt and sundries are returned to the main sewage channel from the sewage outlet, so that the cycle works.

The beneficial effects of the present invention are: there will be no dead corners for accumulation of dirt in the device of the invention, fibrous dirt such as animal hair will no longer be hung on the filter, and there is no need to manually open the device regularly for decontamination, realizing fully automatic decontamination Function.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a sectional view of the present invention.

Fig. 2 is an outline view of the present invention.

In Fig. 1, 1. blowdown room, 2. filter room, 3. filter room, 4. filter room, 5. water supply room, 6. backwash room, 7. cylindrical filter screen, 8. decontamination machine shell, 9 .Water supply port, 10. Water return port, 11. Drainage port, 12. Partition plate, 13. Decontamination scraper, 14. Shaft;

In Fig. 2, 7. cylindrical filter screen, 9. water supply port, 10. water return port, 11. drain port, 14. shaft, 15. sewage port, 16. sewage separator, 17. upper cover plate, 18. Lower cover.

Detailed ways:

The decontamination machine housing (8) of the present invention is provided with a water supply port (9) and a water return port (10), and the two ends of the decontamination machine housing (8) are sealed with an upper cover plate (17) and a lower cover plate (18) , the lower cover plate has a drain outlet (11), and a sewage water separator (16) with a sewage outlet (15) is installed below the upper cover plate (17), and the bottom of the sewage water separator (16) is installed with a shaft (14 ) is the cylindrical filter screen (7) of the center. The space between the decontamination machine shell (8) and the cylindrical filter screen (7) is divided into two parts by the partition plate (12) which is welded on the inner wall of the decontamination machine shell and the same height as the cylindrical filter screen (7); A rotatable decontamination scraper (13) that is in close contact with the filter screen is arranged inside the filter screen (7), and the decontamination scraper and the cylindrical filter screen are of equal height and cross-sectional shape; (12) and the decontamination scraper divide the interior of the decontamination machine into filter chambers for impurity-containing sewage in the cylinder (2), (3), (4), sewage water supply chamber after decontamination outside the cylinder (5), heat exchange outside the cylinder The post-sewage backwashing chamber (6), the impurity-containing sewage discharge chamber in the cylinder (1), and the volume ratio of the sewage water supply chamber (5) after decontamination outside the cylinder to the sewage backwashing chamber (6) after heat exchange outside the cylinder is 3 : 1. The rotatable decontamination scraper (13) and the cylindrical filter screen adopt a coaxial (i.e. shaft (14)) design, and its intermittent rotation is realized jointly by a drive motor, a speed reducer, and an intermittent transmission gearbox.

While raw sewage is being filtered, the cylindrical filter screen (7) is driven by the rotating filter cartridge to drive the motor and adjusted by the reducer to drive the cylindrical filter screen to rotate through the connecting shaft, so that 75% of the entire cylindrical filter screen is in the In the filter area, 25% of the filter screen is in the backwash area, which realizes the continuous cleaning of the filter surface without stopping the machine. When the cylindrical filter screen rotates, the dirt and sundries hanging on the cylindrical filter net are scraped off by the decontamination scraper (13) and float in the filter chamber. , The reducer is adjusted by the intermittent transmission gearbox to output a 90-degree rotation action, and the dirt and debris are returned to the main sewage channel from the sewage outlet, so that the cycle works.

Claims (2)

1, a kind of sewage full-automatic sewage-removing machine, comprise spotter shell (8), drive and the tubular filter screen (7) of continuous rotation by drive motors, be welded on the dividing plate (12) between spotter outer casing inner wall and the tubular filter screen outside, upper cover plate (17), lower cover (18), discharge outlet (11), axle (14) and the feed water inlet (9) and the water return outlet (10) that are provided with at the spotter shell, it is characterized in that: the sewage water knockout drum (16) that between tubular filter screen (7) top and upper cover plate (17), is provided with sewage mouth (15), at the inner rotatable scrubbing scraper plate (13) that closely contacts with the tubular filter screen, the tubular filter screen of being provided with of tubular filter screen, dividing plate (12) and scrubbing scraper plate are divided into an interior impure sewage water filtration chamber (2 with spotter inside, 3,4), sewage water supply chamber (5) after the outer scrubbing of tube, sewage backwash chamber (6) after the outer heat exchange of tube, impure sewage water discharge chamber (1) in the tube; The cross sectional shape across of scrubbing scraper plate; The sewage water knockout drum contacts with spotter shell, tubular filter screen and dividing plate sealing, and in sewage water knockout drum bottom the corresponding opening in area and position and described impure sewage water filtration chamber (2,3,4) is set.

2, sewage full-automatic sewage-removing machine according to claim 1 is characterized in that: rotatable scrubbing scraper plate and tubular filter screen adopt coaxial design, are realized jointly that by drive motors, decelerator and intermittently-driving gear-box rotate the intermittence of scrubbing scraper plate.

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