CN216549793U - Airtight negative pressure stirred tank of function is aerifyd in area - Google Patents

Abstract

The utility model discloses a closed negative pressure stirring tank with an aeration function, which comprises an air inlet pipe and an air outlet pipe, wherein the air inlet pipe and the air outlet pipe penetrate into a tank body through a sealing cover; a plurality of aeration discs are circumferentially and uniformly distributed in the tank body, all the aeration discs are communicated through round pipes, and the round pipes are connected with the air inlet pipe. The bottom end of the bottom of the conical wall of the tank body is provided with a discharging pipe. The aeration disc is adopted to disperse the filled gas into micro bubbles, so that the gas-liquid contact area and the slurry gas dissolution concentration can be effectively increased, and the reaction is promoted to be carried out efficiently; adopt the airtight mode of negative pressure to take out the harmful gas in the space above the liquid level through the draught fan and handle separately, and then avoided the pollution of waste gas to the environment.

Description

Airtight negative pressure stirred tank of function is aerifyd in area

Technical Field

The utility model relates to a stirring aeration device, which is mainly used for stirring aeration treatment of liquid, ore pulp and other materials which need aeration and generate sediments and toxic waste gas.

Background

Gold smelting enterprises adopting cyaniding leaching technology to treat ores produce a large amount of cyanide-containing waste water or ore pulp, such as cyanide-containing waste water treated by an acidification stripping method, cyanide-containing ore pulp pretreated by oxygen or air oxidation, and the like. Because the cyanide-containing waste belongs to hazardous waste, the waste must be subjected to harmless treatment. The innocent treatment technologies of cyanide-containing waste water or ore pulp, such as an acidification method, an ozone oxidation method, an inconel method and the like, need to be aerated, and can generate toxic gases, such as hydrogen cyanide and the like. When the technology is adopted to treat cyanide-containing wastewater or ore pulp, production equipment with the functions of inflation, gas dispersion and stirring is needed, the sealing is good, toxic gas does not overflow, and the cyanide-containing wastewater or ore pulp can be discharged and treated in time. The existing acidification method generally adopts a spraying reverse blowing aeration method, has low treatment capacity, large equipment volume, high price and high capital construction and equipment purchase cost. On the other hand, because the inside of the equipment is in a positive pressure environment, the risk of hydrogen cyanide overflow is high. The existing ozone oxidation method and the existing causal method treatment device adopt an inflation pipeline to introduce gas, and are not provided with gas dispersion devices such as an aeration disc, so that the bubbles are large in size, poor in dispersion effect and poor in oxidation effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a closed negative pressure stirring tank with an aeration function, which is used for realizing the aeration treatment of cyanide-containing wastewater or ore pulp, has good stirring reaction effect and can avoid toxic gas from overflowing.

The technical scheme of the utility model is as follows:

the utility model provides an airtight negative pressure stirred tank of function is aerifyd in area, is including the cell body that has the cylinder cell wall, the cell body still has the conical wall tank bottom that connects in cylinder cell wall lower extreme, circular sealed lid is installed to the up end of cell body, circular sealed covering installs the motor, motor drive is connected with the gearbox, and the gearbox transmission is connected with the (mixing) shaft, and the (mixing) shaft lower extreme has and is located the inside impeller of cell body, still install inlet pipe and discharging pipe, its characterized in that on the cell body: the stirring tank also comprises an air inlet pipe and an air outlet pipe which penetrate into the tank body through a circular sealing cover, the air outlet pipe is connected with an induced draft fan, and the inner port of the air outlet pipe is positioned above the liquid level in the tank body; a plurality of aeration discs which are uniformly distributed in the circumferential direction are arranged in the tank body, all the aeration discs are communicated through round pipes, and the round pipes are connected with the air inlet pipe; and a discharging pipe is arranged at the bottom end of the groove bottom of the conical wall.

Preferably, the stirring tank further comprises a parameter monitoring probe positioned inside the tank body, and a connecting line of the parameter monitoring probe penetrates out of the circular sealing cover and is connected with a monitoring instrument.

Preferably, the aeration disc is a microporous corrosion-resistant aeration disc.

Preferably, the stirring tank further comprises a dosing pipe penetrating into the tank body through the circular sealing cover.

The utility model has the positive effects that:

the aeration disc is adopted to disperse the filled gas into micro bubbles, so that the gas-liquid contact area and the slurry gas dissolution concentration can be effectively increased, and the reaction is promoted to be carried out efficiently; and a negative pressure sealing mode is adopted, and harmful gas in the space above the liquid level is pumped out through the draught fan to be treated, so that the pollution of waste gas to the environment is avoided.

The utility model is especially suitable for aeration treatment of cyanide-containing wastewater (ore pulp) by technologies such as acidification method, ozone or air oxidation method, and inconel method.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The utility model is further illustrated by the following figures and examples.

As shown in fig. 1, the embodiment of the present invention comprises a tank body having cylindrical tank walls 8 and a tapered wall tank bottom 9 connected to the lower end of the cylindrical tank walls 8. And a circular sealing cover 14 is arranged at the upper port of the groove body. And a discharging pipe 10 is arranged at the bottom end of the conical wall groove bottom 9, and a valve 11 is arranged on the discharging pipe 10. The trough body is also provided with a feeding pipe 6 and a discharging pipe 12.

The circular sealing cover 14 is provided with a motor 1, the motor 1 is connected with a gearbox 2 in a transmission manner, the gearbox 2 is connected with a stirring shaft 3 in a transmission manner, and the lower end of the stirring shaft 3 is provided with an impeller 4 positioned in the groove body.

The embodiment also comprises an air inlet pipe 7, an air outlet pipe 16 and a dosing pipe 15 which penetrate into the groove body through the circular sealing cover 14, wherein the air outlet pipe 16 is externally connected with a draught fan, and the inner port of the air outlet pipe 16 is positioned above the liquid level in the groove body. The embodiment also comprises a parameter monitoring probe 13 positioned inside the tank body, and a connecting wire of the parameter monitoring probe 13 penetrates out of the circular sealing cover 14 and is connected with a monitoring instrument.

A plurality of aeration discs 5 which are uniformly distributed in the circumferential direction are arranged in the tank body, all the aeration discs 5 are communicated through a circular tube 17, and the circular tube 17 is connected with the inner end part of the air inlet pipe 7. The aeration disc 5 is preferably a microporous corrosion-resistant aeration disc.

When in use, the slurry enters the tank body through the feeding pipe 6, and is mixed with the gas filled in the aeration subsystem consisting of the aeration pipe 7 and the aeration disc 5 and the medicament added through the medicament adding pipe 15 to react under the stirring action of the stirring subsystem consisting of the motor 1, the gear box 2, the stirring shaft 3 and the impeller 4. The slurry after the reaction is discharged from a discharge pipe 12. The gas which is not completely reacted and the gas which is generated in the reaction process are discharged by the gas outlet pipe 16 under the action of the induced draft fan, and the space above the liquid level of the stirring tank is ensured to be in a negative pressure state, so that the gas is prevented from overflowing. In the reaction process, parameters such as temperature, pH and dissolved oxygen can be monitored by the monitoring probe 13 in real time, and monitoring data is transmitted to a monitoring instrument through a connecting line of the parameter monitoring probe 13. The sediment generated in the tank body is deposited on the cone bottom 9 and can be discharged continuously or discontinuously through a discharge pipe 10 with a valve 11.

Claims (4)

1. The utility model provides an airtight negative pressure stirred tank of function is aerifyd in area, is including the cell body that has cylinder cell wall (8), the cell body still has tapered wall tank bottom (9) that connects in cylinder cell wall (8) lower extreme, circular sealed lid (14) are installed to the upper port of cell body, install motor (1) on circular sealed lid (14), motor (1) transmission is connected with gearbox (2), and gearbox (2) transmission is connected with (mixing) shaft (3), and (mixing) shaft (3) lower extreme has and is located inside impeller (4) of cell body, still install inlet pipe (6) and discharging pipe (12), its characterized in that on the cell body: the stirring tank also comprises an air inlet pipe (7) and an air outlet pipe (16) which penetrate into the tank body through a circular sealing cover (14), the air outlet pipe (16) is connected with an induced draft fan, and the inner port of the air outlet pipe (16) is positioned above the liquid level in the tank body; a plurality of aeration discs (5) which are uniformly distributed in the circumferential direction are arranged in the tank body, all the aeration discs (5) are communicated through round pipes (17), and the round pipes (17) are connected with the air inlet pipe (7); and a discharging pipe (10) is arranged at the bottom end of the conical wall groove bottom (9).

2. The closed negative-pressure stirring tank with the aeration function as claimed in claim 1, wherein: the stirring tank also comprises a parameter monitoring probe (13) positioned inside the tank body, and a connecting line of the parameter monitoring probe (13) penetrates out of the circular sealing cover (14) and is connected with a monitoring instrument.

3. The closed negative-pressure stirring tank with the aeration function according to claim 1 or 2, characterized in that:

the aeration disc (5) is a micropore corrosion-resistant aeration disc.

4. The closed negative-pressure stirring tank with the aeration function according to claim 1 or 2, characterized in that: the stirring tank also comprises a medicine feeding pipe (15) penetrating into the tank body through a circular sealing cover (14).

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