CN219009967U - Vertical dissolved air tank additionally provided with air-water pressure balance control pipe - Google Patents

Abstract

The vertical dissolved air tank with the air-water pressure balance control pipe is characterized in that a safety valve (1), a pressure gauge (2) and an instrument air inlet pipe (9) are arranged at the upper part of the tank body, and the safety valve (1) is connected to the side of the top of the dissolved air tank through a flange; the pressure gauge (2) is connected to the side of the top of the dissolved air tank through a pressure guiding pipe; the instrument air inlet pipe (9) is welded at the upper part of the tank body; a manhole cover (3) and a liquid level meter (4) are arranged at the middle lower part of the tank body; a water inlet pipe interface (5) and a dissolved air release pipe (7) are arranged at the lower part of the tank body, the water inlet pipe interface (5) is welded at the side lower part of the tank body, and the pipe orifice is connected with the water inlet pipe through a flange; the dissolved gas release pipe (7) is welded below the tank body, and the bottom of the tank body is provided with a drain pipe (6); the lower part of the tank body is additionally provided with a pneumatic-hydraulic pressure balance pipe (8). According to the utility model, the air-water pressure balance pipe is additionally arranged, the regulating valve is optimized, the manufacturing cost and the running cost of the dissolved air tank are effectively reduced, and the running stability of the device is improved.

Description

Vertical dissolved air tank additionally provided with air-water pressure balance control pipe

Technical Field

The utility model belongs to the field of chemical environment-friendly devices, and particularly relates to a vertical dissolved air tank with a gas-water pressure balance control pipe.

Background

The vertical gas dissolving tank is widely applied to deep wastewater treatment at present, and is used as a core unit of a gas dissolving system, a certain pressure and a certain gas-water ratio are maintained, so that a large number of tiny bubbles can be brought out of the dissolved gas in the releasing process, colloid and suspended matters in the wastewater can be wrapped, and the colloid and suspended matters in the wastewater can be lifted to the surface of an air floatation tank for removing the colloid and suspended matters in the water. The existing vertical dissolved air tank basically adopts a liquid level interlocking valve to control the pressure and the air-water ratio in the dissolved air tank, in the sewage recycling process, due to the influence of hydrocolloid and suspended matter, a liquid level meter and a regulating valve are extremely easy to clamp or block, so that the pressure in the dissolved air tank cannot maintain a stable state, under extreme conditions, the safety valve of the dissolved air tank can be jumped or emptied, the safe and stable operation of the dissolved air tank is severely restricted, the pump of a matching machine is frequently damaged, meanwhile, the regulating valve is frequently adjusted, the fluctuation of the air-water ratio is large, larger workload is brought to on-site operation, time and energy of operators are seriously consumed, the operation effect is not ideal, and under extreme conditions, the pressure can be effectively operated for less than one hour in one day.

Disclosure of Invention

The utility model aims to provide an improved vertical dissolved air tank with a gas-water pressure balance control pipe, aiming at the defects of the existing vertical dissolved air tank.

The integral conception for improving the existing vertical dissolved air tank is as follows: by on-site operation adjustment, referring to related technological index parameters, two parameters for restricting the stable operation of the dissolved air tank are found out: the first is the pressure in the tank, which is used for ensuring that air can be dissolved in water; the other is the air-water ratio, i.e. the ratio of water to air in the dissolved air tank. In view of the fact that the existing liquid level interlocking control device is easy to cause unbalance of pressure and air-water ratio, under the condition that the existing dissolved air tank water inlet, air inlet, delivery pump and dissolved air release device are kept unchanged, a water inlet regulating valve is canceled, liquid level control interlocking is canceled, on the basis of calculating the air-water ratio and required pressure, an air-water pressure balance control pipe is added at the air water balance point position of the existing vertical dissolved air tank, a flange is used for being connected with the air tank pressure balance point tank body, the discharge amount is controlled by using a ball valve, and the outlet of the pressure balance pipe is empty and located in an air floatation water inlet tank.

The specific technical scheme is as follows:

a vertical dissolved air tank with an additional air-water pressure balance control pipe is provided, wherein a safety valve, a pressure gauge and an instrument air inlet pipe are arranged at the upper part of the tank body, and the safety valve is connected to the side of the top of the dissolved air tank through a flange and is used for pressure relief during overpressure. The pressure gauge is connected to the side of the top of the dissolved air tank through a pressure guiding pipe and is used for monitoring the pressure in the tank. The instrument air inlet pipe is welded on the upper part of the tank body, and an outlet of the air inlet pipe is connected with the air inlet main pipe through a flange and is used for introducing compressed air. The manhole cover and the liquid level meter are arranged at the middle lower part of the tank body, and the manhole cover is arranged at the side of the middle lower part of the tank body through the flange, so that the manual overhaul is convenient. The liquid level meter is connected with two small valves through an upper flange and a lower flange and then welded in the middle of the tank body, and is used for monitoring the water level in the tank. The lower part of the tank body is provided with a water inlet pipe interface and a dissolved air release pipe, the water inlet pipe interface is welded below the side of the tank body, and the pipe orifice is connected with the water inlet pipe through a flange for water inlet. The dissolved gas release pipe is welded below the tank body and is connected with the release main pipe through a flange. The lower part of the tank body is additionally provided with a gas-water pressure balance pipe which is welded at the gas-water balance point position on the wall of the tank body and is communicated with the pressure guiding pipe in the tank body, the balance pipe comprises a first connecting flange, a second connecting flange and a third connecting flange, the first connecting flange is connected with a bent pipe, and the lower end of the bent pipe is connected with the pressure stabilizing regulating valve through the second connecting flange and the third connecting flange. The pressure stabilizing regulating valve is used for controlling the water pressure release amount of the balance air, and the lower part of the balance pipe is directly discharged and inserted into the air floatation water inlet pool. A drain pipe is arranged at the bottom of the tank body.

The beneficial effects of the utility model are as follows:

1. according to the utility model, liquid level interlocking control is not needed, and the gas-water pressure balance pipe is additionally arranged, so that the regulating valve is optimized, and the manufacturing cost and the running cost of the dissolved air tank are effectively reduced.

2. According to the utility model, the dissolved air release effect of the dissolved air tank can be stabilized by additionally arranging the air-water pressure balance pipe, and the running stability of the device is increased.

3. The utility model can slow down the pressure fluctuation of the dissolved air pump and reduce the maintenance times of the pump.

4. According to the utility model, the working frequency of an operator for adjusting the ratio of dissolved air to water is greatly reduced by additionally arranging the air-water pressure balance pipe, so that the labor intensity of workers is reduced.

5. Because the pipe of the air-water pressure balance pipe is positioned at the air water balance point of the tank body, the pressure and the air-water ratio in the dissolved air tank can be effectively stabilized through the release and adjustment of the pressure stabilizing adjusting valve of the pressure balance pipe under the conditions of too high and low pressure, too large and too small air quantity or too large and too small water quantity, and the water-out and air-dissolving effect is ensured to be efficient and stable.

6. The vertical dissolved air tank with the air-water pressure balance pipe can ensure that the air dissolving effect does not fluctuate and change for at least two months, ensures the stable operation of the air dissolving water pump, and basically does not need to be overhauled.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic diagram of the structure of the air-water pressure balance pipe of the present utility model.

Detailed Description

Specific embodiments of the present utility model are further illustrated by the accompanying drawings.

As shown in fig. 1 and 2, a vertical dissolved air tank with an air-water pressure balance control pipe is additionally arranged, a safety valve 1, a pressure gauge 2 and an instrument air inlet pipe 9 are arranged at the upper part of the tank body, and the safety valve 1 is connected to the side of the top of the dissolved air tank through a flange; the pressure gauge 2 is connected to the side of the top of the dissolved air tank through a pressure guiding pipe; the instrument air inlet pipe 9 is welded at the upper part of the tank body; the middle lower part of the tank body is provided with a manhole cover 3 and a liquid level meter 4, and the manhole cover 3 is arranged at the side of the middle lower part of the tank body through a flange; the liquid level meter 4 is connected with two small valves through an upper flange and a lower flange and then welded in the middle of the tank body; the lower part of the tank body is provided with a water inlet pipe interface 5 and a dissolved air release pipe 7, the water inlet pipe interface 5 is welded below the side of the tank body, and the pipe orifice is connected with the water inlet pipe through a flange; the dissolved gas release pipe 7 is welded below the tank body and is connected with the release main pipe through a flange; a drain pipe 6 is arranged at the bottom of the tank body. The lower part of the tank body is additionally provided with a gas-water pressure balance pipe 8 which is welded at a gas-water balance point position on the wall of the tank body and is communicated with a pressure guiding pipe in the tank body, the balance pipe comprises a first connecting flange 11, a second connecting flange 14, a third connecting flange 15 and a pressure stabilizing regulating valve 13, the first connecting flange is connected with a bent pipe 12, and the lower end of the bent pipe 12 is connected with the pressure stabilizing regulating valve 13 through the second connecting flange and the third connecting flange. The pressure stabilizing regulating valve 13 is used for controlling the water pressure release amount of the balance air, and the lower part of the balance pipe is directly discharged and inserted into the air floatation water inlet pool.

Claims (3)

1. The vertical dissolved air tank with the air-water pressure balance control pipe is characterized in that a safety valve (1), a pressure gauge (2) and an instrument air inlet pipe (9) are arranged at the upper part of the tank body, and the safety valve (1) is connected to the side of the top of the dissolved air tank through a flange; the pressure gauge (2) is connected to the side of the top of the dissolved air tank through a pressure guiding pipe; an instrument air inlet pipe (9) is welded at the upper part of the tank body, and a water inlet pipe interface (5) is connected with an air inlet main pipe through a flange; a manhole cover (3) and a liquid level meter (4) are arranged at the middle lower part of the tank body, and the manhole cover (3) is arranged at the side of the middle lower part of the tank body through a flange; the liquid level meter (4) is welded in the middle of the tank body after being connected with two small valves through an upper flange and a lower flange; a water inlet pipe interface (5) and a dissolved air release pipe (7) are arranged at the lower part of the tank body, the water inlet pipe interface (5) is welded at the side lower part of the tank body, and the pipe orifice is connected with the water inlet pipe through a flange; the dissolved gas release pipe (7) is welded below the tank body and is connected with the release main pipe through a flange; the bottom of the tank body is provided with a drain pipe (6), and is characterized in that the lower part of the tank body is provided with a pneumatic-hydraulic pressure balance pipe (8).

2. The vertical dissolved air tank with the additional air-water pressure balance control pipe according to claim 1, characterized in that the air-water pressure balance pipe (8) is communicated with a pressure guiding pipe in the tank body, the balance pipe comprises a first connecting flange (11), a second connecting flange (14), a third connecting flange (15) and a pressure stabilizing regulating valve (13), the first connecting flange is connected with a bent pipe (12), the lower end of the bent pipe (12) is connected with the pressure stabilizing regulating valve (13) through the second connecting flange and the third connecting flange, and the lower part of the balance pipe is directly discharged and inserted into an air floatation water inlet tank.

3. A vertical dissolved air tank with an added gas-water pressure balance control pipe according to claim 1 or 2, characterized in that the gas-water pressure balance pipe (8) is positioned at a gas-water balance point on the tank body wall.

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