CN106186139A - Slag air floatation machine scraped by floating drum - Google Patents

Abstract

The invention discloses a buoy slag scraping air flotation machine, the structure of which comprises a water tank, a dissolved air tank, a buoy slag scraping mechanism, a slag discharge pipe and a water outlet pipe; The outlet pipe where the water is drained, and the other side is provided with a return pipe connected to the dissolved air tank; use a booster pump to pressurize part of the water of the air flotation machine into the dissolved air tank through the return pipe, and pressurize the dissolved air tank at the same time Compressed air, under high pressure, the compressed air dissolves into the water through the inlet pipe; the floating scum is scraped to the slag discharge pipe under the action of the scum scraping mechanism of the buoy, and the clean water is discharged through the outlet pipe in the middle of the air flotation machine . The invention uses compressed air to make the buoy move, and then realizes the principle of scraping the slag of the air flotation machine, which can be used as a new technology for the slag scraping system in the treatment equipment of the air flotation machine. low cost. Therefore, it has a good application value in the air flotation machine equipment.

Description

Buoy scraping slag air flotation machine

technical field

The invention relates to waste treatment equipment, in particular to an air flotation machine for scraping slag with buoys.

Background technique

The air flotation machine is a dissolved air system that produces a large number of fine bubbles in the water, so that the air attaches to the suspended particles in the form of highly dispersed tiny bubbles, resulting in a state of density lower than that of water. -Water treatment equipment for liquid separation. It is currently used in water supply, industrial wastewater and urban sewage treatment. The advantage of the air flotation machine is that its solid-liquid separation equipment has the characteristics of less investment, a small footprint, a high degree of automation, and convenient operation and management.

In sewage treatment, air flotation machines are often used in general production. Its structure is simple and it can effectively remove some solid floating objects in sewage. But the existing air flotation machine consumes a lot of energy. At present, the slag scraper of the air flotation machine is basically composed of a stroke control switch and an electric slag scraper. This slag scraping system is complex to manufacture, expensive to manufacture, and high in operating costs.

The scum scraper in the prior art is usually driven by the motor to extend downwards below the liquid surface, and then move the scum horizontally under the drive of the motor to scrape off the scum and touch the travel switch at the other end to make the motor reverse. Rotate, and then move horizontally back to the initial position driven by the motor. In this way, the motor will continue to rotate forward and reverse, which increases the frequency of motor start and stop, and the start and stop of the motor consumes electric energy, and the equipment structure is more complicated.

Contents of the invention

The object of the present invention is to provide an air flotation machine for scraping slag with a buoy, which uses compressed air to make the buoy move, and then realizes the principle of scraping the slag of the air flotation machine, so that the stroke switch control system and the electric slag scraping system can be subtracted, Reduce investment costs, reduce maintenance costs, but also reduce business operating costs.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the buoy slag scraping air flotation machine proposed by the present invention, its structure includes a water tank, a dissolved air tank, a buoy slag scraping mechanism, a slag discharge pipe and a water outlet pipe; one side of the water tank is provided with a The outlet pipe where the water is drained has a return pipe connected to the dissolved air tank on the other side; use a booster pump to pressurize part of the water of the air flotation machine into the dissolved air tank through the return pipe, and pressurize and compress the dissolved air tank at the same time Air, compressed air under high pressure dissolves into the water through the intake pipe; the floating scum is scraped to the slag discharge pipe under the action of the scum scraping mechanism of the buoy, and the clean water is discharged through the outlet pipe in the middle of the air flotation machine.

In the buoy slag-scraping air flotation machine of the present invention, the dissolving tanks are respectively connected to dissolving pipes and release pipes; the dissolving pipes buffer the water discharged from the dissolving tanks and divert them into each release pipe; the releasing pipes connect the dissolving pipes The dissolved compressed air is released through the release tube.

In the buoy slag scraping air flotation machine of the present invention, the buoy slag scraping mechanism includes: two slag scraping cylinders floating on the water surface; two slag scraping guide rails that are installed on the position where the air flotation machine controls the water level; The air intake pipe of the slag scraping cylinder; the air injection pipe that sprays compressed air to provide force for the slag scraping cylinder; the solenoid valve installed on the intake pipe; and the time control switch that controls the solenoid valve by setting the time; the slag scraping cylinder Two intake pipes are connected to the top of the cylinder to connect with compressed air, and each slag scraping cylinder is equipped with an air jet pipe.

In the buoy slag scraping air flotation machine of the present invention, the solenoid valve is made of stainless steel; the air intake pipe is made of a telescopic hose, and its length is set according to the length of the slag scraper; the slag scraper cylinder is made of DN110 PVC pipe; The slag scraping guide rail is made of stainless steel pipe.

The buoy slag-scraping air flotation machine of the present invention also includes a vent pipe, which is arranged at the bottom of the box body, and its function is to discharge the air flotation machine. The box body is made of carbon steel plate.

In the buoy scraper and slag scraping air flotation machine of the present invention, a plurality of perforated pipes are arranged under the outlet pipe to facilitate the collection of clear water in the same layer.

By means of the above technical solution, the present invention has the following advantages and beneficial effects:

1. The present invention utilizes the principle of time-controlled switch and buoy air-jet walking, and only needs to install two buoys and two time-controlled switch systems to realize the scraping of the air flotation machine.

2. The present invention can reduce the travel switch control system and the electric slag scraping system, reduce investment costs, reduce maintenance costs, and also reduce enterprise operating costs.

3. The invention uses compressed air to make the buoy move, and then realizes the principle of air flotation machine scraping slag, which can be used as a new technology of air flotation machine treatment equipment for slag scraping system, with mature technology, low investment cost, and simple operation and maintenance , low operating cost. Therefore, it has a good application value in the air flotation machine equipment.

Description of drawings

Fig. 1 is an elevation view of the main box of the buoy scraping slag-scraping air flotation machine of the present invention.

Fig. 2 is a plan view of the main box of the buoy scraping slag air flotation machine of the present invention.

Fig. 3 is a side view of the buoy scraping slag air flotation machine of the present invention.

Figure 4 is a large-scale drawing of the buoy for scraping slag.

Figure 5 is a large sample diagram of the water outlet collection pipe.

1: Water tank 11: Outlet pipe 111: Perforated pipe 12: Return pipe

2: Dissolving air tank 21: Dissolving air pipe 22: Release pipe

3: Float scraping mechanism 31, 31’: Time control switch 32, 32’: Solenoid valve

33, 33': Intake pipe 34, 34': Slag scraper 35, 35': Air injection pipe

36: Slag scraping guide rail 4: Slag discharge pipe

5: Outlet pipe 6: Vent pipe

detailed description

Please refer to Figs. 1-3, the structure of the buoy scraping slag flotation machine of the present invention mainly includes a water tank 1, a dissolved air tank 2, a buoy slag scraping mechanism 3, a slag discharge pipe 4, an outlet pipe 5 and a discharge pipe. Empty tube6. Use the booster pump to pressurize part of the water of the air flotation machine into the air-dissolving tank 2 through the return pipe 12, and simultaneously pressurize the air-dissolving tank 2 with compressed air, and the compressed air is dissolved into the water through the intake pipe under high pressure.

One side of the water tank 1 is provided with an outlet pipe 11 , and the other side is provided with a return pipe 12 . The function of the outlet pipe 11 is to drain the water after the air flotation of the air flotation machine. The bottom of the outlet pipe 11 is provided with a plurality of perforated pipes 111 to facilitate the collection of the same layer of clear water, and adopts a circular blind plate to seal the bottom. The function of the return pipe 12 is to return a part of the clear water of the air flotation machine to the dissolved air tank 2 for pressurizing the compressed air.

The dissolving tank 2 is respectively connected with a dissolving pipe 21 and a release pipe 22 . The air-dissolving pipe 21 can buffer the water discharged from the air-dissolving tank 2 and divide it into each release pipe 22 . The release pipe 22 can release the compressed air dissolved in the air-dissolving tank 2 through the release pipe 22. Since the release is the compressed air dissolved in the water before normal pressure, a large number of air bubbles are formed and released to achieve the effect of air flotation. .

This buoy drum scraping mechanism 3 comprises: time control switch 31,31 ', electromagnetic valve 32,32 ', air intake pipe 33,33 ', scraping barrel 34,34 ', jet pipe 35,35 ' and scraping guide rail 36. The time control switch 31, 31' controls the opening and stopping of the electromagnetic valve 32, 32' by setting the time. This electromagnetic valve 32,32 ' adopts stainless steel material, and effect is the control switch of air intake, controls air intake and closes air. This air inlet pipe 33,33 ' adopts flexible hose, and its length is set according to the length of scraping slag, and effect is that compressed air is introduced into PVC scraping slag cylinder 34,34 '. This PVC slag scraping cylinder 34, 34 ' adopts the PVC pipe of DN110 model to make, and the effect is to float on the water surface, split the compressed air, walk back and forth by the effect of air flow and scrape the scum on the air flotation machine. This jet pipe 35,35' adopts four-point PVC pipe to make, and the effect is that compressed air is sprayed out, provides active force to PVC slag scraping cylinder 34,34 ', makes it walk back and forth to scrape slag.

The slag scraping guide rail 36 is made of stainless steel pipe, on the one hand, it plays an anti-corrosion effect, and on the other hand, it reduces the resistance of the PVC slag scraping cylinder 34, 34', and its function is to stabilize the PVC slag scraping cylinder 34, 34' and make it fixed. Walking back and forth.

Install two guide rails (slag scraping guide rails 36) on the position where the air flotation machine controls the water level, and then install two buoys (slag scraping cylinders 34, 34') to float on the water surface, and each buoy is connected with two Air intake pipes 33, 33' are connected with compressed air, and each buoy is equipped with exhaust pipes (jet pipes 35, 35'). When you want the buoy to walk in which direction, you only need to control the corresponding air intake switch (time control switch 31, 31 ') to realize that the buoy can walk in the opposite direction of the jet, so that the two buoys continue to walk in opposite directions. The purpose of scraping off the scum of the air flotation machine is realized.

The effect of this slag discharge pipe 4 is to drain away the scum. The air flotation machine starts to run and enters water, the particles in the water float up under the action of dissolved air bubbles, and the floating scum is scraped to the slag discharge pipe 4 under the action of the buoy scraper mechanism 3 and discharged, and the clean water is discharged in the air flotation The middle part of the machine is discharged through the outlet pipe 5.

This vent pipe 6 is arranged on the bottom of casing, and its effect is to vent the air flotation machine, is mainly used for maintenance and uses. The box body is made of carbon steel plate.

Its operating principle of the buoy slag scraping air flotation machine of the present invention can be expressed as follows:

When the air flotation machine is running, the solenoid valves 32 and 32' are linked to provide power to the solenoid valves 32 and 32', and the solenoid valves 32 and 32' start to work. Under the control of the time control switch, the solenoid valve 32 on the left is first started to open, and the compressed air enters the PVC slag scraping cylinder 34 along the intake pipe 33 through the solenoid valve 32, and is then ejected from the exhaust pipe on the left. Under the force of the jet pipe 35, the PVC slag scraping cylinder 34 moves to the right, and the scum on the water surface on the right side is scraped off to the slag discharge pipe 4 on the right side to be discharged.

Under the control of the time control switch 31, the electromagnetic valve 32 on the left stops the air intake, and the electromagnetic valve 32' on the right starts to intake air. Similarly, the PVC slag scraping cylinder 34' moves to the left to scrape the scum on the water surface on the left to the left. The slag discharge pipe on the left is discharged at 4 places; the purpose of scraping the scum of the air flotation machine is realized through the left and right movement of the PVC slag scraping cylinders 34 and 34'.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form, so any simple modification made to the above embodiments according to the technical essence of the present invention does not depart from the content of the technical solution of the present invention. , equivalent changes and modifications all still belong to the scope of the technical solution of the present invention.

Claims (6)

1. A pontoon scraping slag air flotation machine is characterized in that: its structure includes a water tank, a dissolved air tank, a pontoon slag scraping mechanism, a slag discharge pipe and an outlet pipe; The outlet pipe where the floated water is drained has a return pipe connected to the dissolved air tank on the other side; a booster pump is used to pressurize part of the water of the air flotation machine into the dissolved air tank through the return pipe, and at the same time, the dissolved air tank Compressed air is pressurized, and under high pressure, the compressed air dissolves into the water through the intake pipe; the floating scum is scraped to the slag discharge pipe under the action of the scum scraping mechanism of the buoy, and the clean water passes through the outlet in the middle of the air flotation machine. Hose drained. 2. The buoy scraping slag flotation machine according to claim 1, characterized in that: said dissolving tanks are respectively connected with dissolving pipes and release pipes; said dissolving pipes buffer the water discharged from the dissolving tanks and divert them to each release pipe Middle; the release pipe releases the compressed air dissolved in the air dissolving tank through the release pipe. 3. The slag-scraping air flotation machine according to claim 1, characterized in that: the slag-scraping mechanism of the pontoon comprises: two scraping cylinders floating on the water surface; Two slag-scraping guide rails running on the buoy; the intake pipe connected to the slag-scraping cylinder; the air injection pipe that sprays compressed air to provide force for the slag-scraping cylinder; the solenoid valve installed on the intake pipe; and the solenoid valve is controlled by setting the time The time-controlled switch; the top of the slag-scraping cylinder is connected with two air intake pipes to connect with compressed air, and each slag-scraping cylinder is equipped with an air jet pipe. 4. The buoy slag-scraping air flotation machine according to claim 3, characterized in that: the solenoid valve is made of stainless steel; the air intake pipe is a telescopic hose, and its length is set according to the length of the scraping slag; The slag cylinder is made of DN110 PVC pipe; the slag scraping guide rail is made of stainless steel pipe. 5. The buoy scraper and slag-scraping air flotation machine according to claim 1, characterized in that: it also includes a vent pipe, which is arranged at the bottom of the box body, and its function is to discharge the air flotation machine, and the box body is made of carbon steel plate. 6. The buoy scraper and slag-scraping air flotation machine according to claim 1, characterized in that: a plurality of perforated pipes are arranged under the outlet pipe to facilitate the collection of clean water in the same layer.