SU435837A1 - DRAINER - Google Patents

Description

one

The invention relates to a technique for separating suspensions in settling tanks and can be used in the chemical, food, light, petrochemical, microbiological, industries, for example, for the purification of the neutralized hydrolytic industry.

A septic tank is known that switches off the housing, inside of which there is a rotating rowing device with a lifting mechanism, made in the form of tines, and a drainage chute.

A disadvantage of the known settling tank is that, if it is necessary to obtain a clarified solution, a layer of particles of resin, gypsum and other substances that contaminate it on the circular edge of the drainage chute accumulates. As a result, the uniformity of discharge of the clarified liquid is disturbed and the quality of the clarification deteriorates. The removal of the contaminated layer in a well-known septic tank is done manually; for this, the septic tank must be periodically stopped, which reduces the productivity of the apparatus and increases operating costs.

In order to improve the performance of the apparatus and improve the quality of clarification, in the proposed sump, a tool for cleaning the edge of the drainage chute, made in the form of a telescopic rod including the bottom pipe and the upper one, on which the scraper is attached to the edge of the drainage chute, is installed in the proposed settling tank.

FIG. 1 shows the proposed settling tank, longitudinal section; in fig. 2 — node I in FIG. one.

In the housing 1 of the sump on the Central shaft 2 is set the rowing device in

as tine 3. The shaft is connected to the drive 4 of the rotation mechanism and the shaft lifting mechanism 5. A loading bowl 6 is fixedly attached to the lid of the housing 1, a fitting 7 is made on the side of the shell of the housing, which communicates with a drainage chute 8. In the lower central part of the housing there is a fitting 9 for discharging sludge. A cleaning device is rigidly attached to the rake 3 of the rake device.

the edges 10 of the drain chute 8, made in the form of a telescopic rod, the lower pipe and which freely enters the upper pipe 12. The pipes 11 and 12 are fixed to each other by means of a removable rod 13, which is placed in guides, for example in longitudinal slits, made in top tube 12.

A spring 14 and a thrust washer 15 are installed between the pipes I and 12 and the scraper 16 is removable and mounted on a stem 17,

which is rigidly fastened to the upper tube 12 of the telescopic rod.

The sump works as follows.

The suspension through the loading cup 6 enters the body, where it is separated into solid and liquid phases. The clarified product is poured over the edge 10 of the drainage chute 8 and is discharged through the fitting 7. The solid phase (sludge) during the rotation of the paddle device is scooped to the clamp 9 and is withdrawn from the apparatus.

In case of overloading of the drive of the rotation mechanism, the lifting mechanism 5 automatically turns on, and the rowing device rises to a certain height.

In the process of draining the clarified liquid through the edge 10 of the discharge chute 8, an uneven thickness of a layer is formed on it from particles of resin, gypsum and other substances that must be cleaned. The cleaning is performed by a scraper 16, which, when the rowing device rotates, moves along the circular edge 10. Scraper 16 is installed at an angle to the radius of the settling tank, which provides more efficient cleaning of the edge 10 and prevents the cleaned sludge from entering the drain chute 8. Spring 14 ensures even pressing of the scraper 16 to the edge 10 in the lower position of the paddle device. As the paddle device is raised, the scraper 16 presses against the edge 10 with the weight of the upper part of the telescopic rod. The vertical movement of the lower and upper tubes of the telescopic bar relative to each other occurs along guide slots, in which the ends of the rod 13 enter at their ends, at the same time protecting the pipe 12 from turning. Cleaning the edge of the drain gutter in the proposed device occurs when the device is running, regardless of whether the rowing device is in the lower or upper position. This increases the productivity of the apparatus, improves the quality of the clarification of the product, eliminates manual labor and reduces operating costs.

Subject invention

A settling tank comprising a housing, inside of which is placed a rotating paddle device with a lifting mechanism, made in the form of a tine arm, and a drainage chute, characterized in that, in order to increase

performance of the device and improving the quality of clarification of the product, a device for cleaning the edge of the drain chute, made in the form of a telescopic

a rod comprising a lower pipe and an upper pipe, on which a scraper is fixed, which is in contact with the edge of the drainage chute.

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