Two-stage jet aeration stirring device

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a two-stage jet aeration stirring device which comprises a sewage pool and a water inlet system, the water inlet system is mounted on the left side of the sewage pool, and a two-stage jet aeration stirring device is arranged on the right side of the water inlet system. According to the two-stage jet aeration stirring device, air above the liquid level of a sewage pool enters the first-stage air suction cavity through the first-stage air suction pipeline to be fully mixed with sewage according to the Bernoulli principle, the sewage subjected to air-liquid mixing passes through the second-stage mixed flow nozzle, and due to the increase of the flow speed, the second-stage mixed flow nozzle generates a secondary Bernoulli effect, so that the sewage is fully mixed; negative pressure is generated in the second-stage mixing cavity, water inlet holes are formed in the periphery of the second-stage mixing cavity, sewage near the device is sucked into the second-stage mixing cavity under the action of the negative pressure to be further mixed with air-dissolved sewage at the front end, then the sewage is sprayed into a sewage body in front through a second-stage diffusion pipe, and impact water flow is formed. And the effects of mixing, stirring and water oxygenation are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a two-stage jet aeration and stirring device. Background Technique

[0002] Sewage treatment: The process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people.

[0003] In traditional sewage treatment processes, the design of aerators directly affects the oxygenation efficiency and stirring effect. In the prior art, single-stage jet aerators have problems such as uneven aeration and low oxygen transfer efficiency.

[0004] Therefore, we urgently need to provide a two-stage jet aeration and stirring device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a two-stage jet aeration and stirring device to solve the problems in the above-mentioned background technique that in traditional sewage treatment processes, the design of aerators directly affects the oxygenation efficiency and stirring effect. In the prior art, single-stage jet aerators have problems such as uneven aeration and low oxygen transfer efficiency.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A two-stage jet aeration and stirring device, including a sewage tank and a water inlet system, the water inlet system is installed on the left side of the sewage tank, and a secondary jet aeration and stirring device is arranged on the right side of the water inlet system.

[0007] The secondary jet aeration and stirring device includes a primary jet unit, an oxygen absorption and mixing unit, a secondary mixed flow unit, and a stirring unit.

[0008] The primary jet unit includes a water inlet coupling device, a primary water inlet chamber, and a primary jet nozzle. The water inlet coupling device is installed on the right side of the water inlet system. The primary water inlet chamber is installed at the drainage port of the water inlet system through a connecting flange, and its right end extends into the interior of the sewage tank. The primary jet nozzle is fixedly connected to the right end of the primary water inlet chamber.

[0009] A further improvement is that the oxygen inhalation mixing unit includes a primary suction chamber, a primary suction pipe, and an intake controller. The primary suction chamber is installed outside the primary jet nozzle. The primary suction pipe is fixedly connected to the center of the top of the primary suction chamber. The intake controller is installed above the outer surface of the primary suction pipe to convey the pressure of the treated liquid mixed sewage into the interior of the primary water inlet chamber. The pressurized sewage is sprayed from the primary jet nozzle connected to the primary water inlet chamber into the interior of the primary suction chamber. Due to the Bernoulli principle, a negative pressure is generated inside the primary suction chamber, causing the air above the sewage pool liquid level to enter the interior of the primary suction chamber through the intake controller and the primary suction pipe and mix fully with the sewage. The setting of the intake controller can flexibly control the air intake volume of the system to meet the different oxygen demand requirements under different water bodies and working conditions.

[0010] A further improvement is that the secondary mixing unit includes a sealed bearing, a connecting pipe, a water distribution plate, and a secondary mixing assembly. The sealed bearing is installed on the outer surface of the right side of the primary suction chamber. The connecting pipe is rotatably connected to the interior of the sealed bearing. The water distribution plate is fixedly connected to the right end of the connecting pipe and has a hollow structure inside. A number of groups of the secondary mixing assemblies are annularly installed on the outer surface of the right side of the water distribution plate.

[0011] A further improvement is that the secondary mixing assembly includes a secondary water inlet chamber, a secondary mixing nozzle, a secondary mixing chamber, and a secondary diffusion pipe. The secondary water inlet chamber is fixedly connected to the outer surface of the right side of the water distribution plate. The secondary mixing nozzle is fixedly connected to the right end of the secondary water inlet chamber. The secondary mixing chamber is installed outside the secondary mixing nozzle. The secondary diffusion pipe is fixedly connected to the right side of the secondary mixing chamber.

[0012] A further improvement is that the outer surface of the secondary mixing chamber is annularly and equidistantly provided with water inlet holes. The sewage after full gas-liquid mixing enters the interior of the water distribution plate through the connecting pipe, flows through the secondary water inlet chamber, and passes through the secondary mixing nozzle under pressure. Due to the increase in flow rate, the secondary mixing nozzle generates a secondary Bernoulli effect, generating a negative pressure inside the secondary mixing chamber. The secondary mixing chamber is designed with water inlet holes around it. Under the action of the negative pressure, the sewage near the device is sucked into the interior of the secondary mixing chamber to further mix with the dissolved gas sewage at the front end, which not only drives the stirring of the sewage in the area but also makes the gas-liquid mixing effect better. Subsequently, it is sprayed into the sewage water body in front through the secondary diffusion pipe to form an impact water flow, meeting the effects of mixing and stirring and water body oxygenation.

[0013] A further improvement is that the stirring unit includes a driving motor, a rotating shaft, and a pulley. The driving motor is installed at the front end of the sewage pool. The rotating shaft is connected to the output end of the driving motor. The pulley is fixedly connected to the right end of the rotating shaft.

[0014] Furthermore, an improvement is that a pulley is also installed on the outer surface of the connecting pipe, and a transmission belt is rotatably connected between the two pulleys. At the same time, the driving motor is started to drive the rotating shaft to rotate, thereby driving the pulley on the right side of the rotating shaft to rotate, and then driving the pulley on the outer surface of the connecting pipe to rotate synchronously through the transmission belt, so that the connecting pipe rotates inside the sealed bearing, thereby driving the overall rotation of the secondary mixing unit to stir the sewage, further improving the effect of stirring and aeration.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. For this two-stage jet aeration stirring device, through the primary action of the self-coupling water inlet system, the air above the sewage pool liquid surface is introduced into the interior of the primary suction chamber to be fully mixed with the sewage by using Bernoulli's principle through the air inlet controller and the primary suction pipeline. Moreover, the setting of the air inlet controller can flexibly control the air intake of the system to meet the different oxygen demand requirements under different water bodies and working conditions.

[0017] 2. For this two-stage jet aeration stirring device, the sewage after gas-liquid mixing passes through the secondary mixing nozzle. Due to the increase in flow rate, the secondary mixing nozzle generates a secondary Bernoulli effect, creating a negative pressure inside the secondary mixing cavity. The secondary mixing cavity is designed with water inlet holes around it, and under the action of the negative pressure, the sewage near the device is sucked into the interior of the secondary mixing cavity to be further mixed with the dissolved air sewage at the front end, which not only drives the stirring of the sewage in the area but also makes the gas-liquid mixing effect better. Subsequently, it is sprayed into the sewage water body in front through the secondary diffusion pipe to form an impact water flow, meeting the effects of mixing and stirring and water body oxygenation.

[0018] 3. For this two-stage jet aeration stirring device, the driving motor is started to drive the rotating shaft to rotate, thereby driving the pulley on the right side of the rotating shaft to rotate, and then driving the pulley on the outer surface of the connecting pipe to rotate synchronously through the transmission belt, so that the connecting pipe rotates inside the sealed bearing, thereby driving the overall rotation of the secondary mixing unit to stir the sewage, further improving the effect of stirring and aeration. Description of the Drawings

[0019] Figure 1 It is a top view structural schematic diagram of the present utility model;

[0020] Figure 2 It is an independent structural schematic diagram of the secondary jet aeration stirring device of the present utility model;

[0021] Figure 3 It is a partial cross-sectional structural schematic diagram of the secondary jet aeration stirring device of the present utility model;

[0022] Figure 4 It is a partial cross-sectional structural schematic diagram of the water distribution plate and the secondary mixing assembly of the present utility model.

[0023] In the figure: 1. Sewage tank; 2. Inlet water system; 301. Inlet water coupling device; 302. Primary inlet water chamber; 303. Primary jet nozzle; 304. Primary air suction chamber; 305. Primary air suction pipe; 306. Air inlet controller; 307. Sealed bearing; 308. Connecting pipe; 309. Water distribution plate; 310. Secondary mixed flow assembly; 3101. Secondary inlet water chamber; 3102. Secondary mixed flow nozzle; 3103. Secondary hybrid chamber; 3104. Secondary diffuser pipe; 311. Driving motor; 312. Rotating shaft; 313. Pulley; 314. Transmission belt. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 4 , the present invention provides a technical solution:

[0026] Embodiment 1:

[0027] A two-stage jet aeration and stirring device includes a sewage tank 1 and an inlet water system 2. The inlet water system 2 is installed on the left side of the sewage tank 1, and a two-stage jet aeration and stirring device is arranged on the right side of the inlet water system 2.

[0028] The two-stage jet aeration and stirring device includes a primary jet unit, an oxygen absorption and mixing unit, and a secondary mixed flow unit.

[0029] The primary jet unit includes an inlet water coupling device 301, a primary inlet water chamber 302, and a primary jet nozzle 303. The inlet water coupling device 301 is installed on the right side of the inlet water system 2. The primary inlet water chamber 302 is installed at the drainage port of the inlet water system 2 through a connecting flange, and its right end extends into the interior of the sewage tank 1. The primary jet nozzle 303 is fixedly connected to the right end of the primary inlet water chamber 302.

[0030] The oxygen intake mixing unit includes a primary intake chamber 304, a primary intake pipe 305, and an intake controller 306. The primary intake chamber 304 is installed outside the primary jet nozzle 303. The primary intake pipe 305 is fixedly connected to the top center of the primary intake chamber 304. The intake controller 306 is installed above the outer surface of the primary intake pipe 305 to convey the pressure of the treated liquid mixed sewage into the interior of the primary water inlet chamber 302. The pressurized sewage is sprayed from the primary jet nozzle 303 connected to the primary water inlet chamber 302 into the interior of the primary intake chamber 304. Due to the Bernoulli principle, a negative pressure effect is generated inside the primary intake chamber 304, causing the air above the liquid level of the sewage tank 1 to enter the interior of the primary intake chamber 304 through the intake controller 306 and the primary intake pipe 305 and mix fully with the sewage. The setting of the intake controller 306 can flexibly control the air intake volume of the system to meet the different oxygen demand requirements under different water bodies and working conditions.

[0031] The secondary mixed flow unit includes a sealed bearing 307, a connecting pipe 308, a water distribution disk 309, and a secondary mixed flow assembly 310. The sealed bearing 307 is installed on the right outer surface of the primary intake chamber 304. The connecting pipe 308 is rotatably connected inside the sealed bearing 307. The water distribution disk 309 is fixedly connected to the right end of the connecting pipe 308, and its interior is a hollow structure. Several groups of secondary mixed flow assemblies 310 are annularly installed on the right outer surface of the water distribution disk 309.

[0032] The secondary mixed flow assembly 310 includes a secondary water inlet chamber 3101, a secondary mixed flow nozzle 3102, a secondary mixing chamber 3103, and a secondary diffusion pipe 3104. The secondary water inlet chamber 3101 is fixedly connected to the right outer surface of the water distribution disk 309. The secondary mixed flow nozzle 3102 is fixedly connected to the right end of the secondary water inlet chamber 3101. The secondary mixing chamber 3103 is installed outside the secondary mixed flow nozzle 3102. The secondary diffusion pipe 3104 is fixedly connected to the right side of the secondary mixing chamber 3103.

[0033] The outer surface of the secondary mixing chamber 3103 is annularly and equidistantly provided with water inlet holes. The sewage after full gas-liquid mixing enters the interior of the water distribution disk 309 through the connecting pipe 308 and flows through the secondary water inlet chamber 3101, and passes through the secondary mixed flow nozzle 3102 under pressure. Due to the increase in flow velocity, the secondary mixed flow nozzle 3102 generates a secondary Bernoulli effect, generating a negative pressure inside the secondary mixing chamber 3103. The secondary mixing chamber 3103 is designed with water inlet holes around it, and under the action of the negative pressure, the sewage near the device is sucked into the interior of the secondary mixing chamber 3103 to further mix with the dissolved gas sewage at the front end, which not only drives the stirring of the sewage in the area but also makes the gas-liquid mixing effect better. Subsequently, it is sprayed into the sewage water body in front through the secondary diffusion pipe 3104, thus completing the effects of mixing, stirring, and oxygenation.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, the secondary jet aeration stirring device includes a stirring unit. The stirring unit includes a driving motor 311, a rotating shaft 312, and a pulley 313. The driving motor 311 is installed at the front end of the sewage tank 1. The rotating shaft 312 is connected to the output end of the driving motor 311. The pulley 313 is fixedly connected to the right end of the rotating shaft 312.

[0036] A pulley 313 is also installed on the outer surface of the connecting pipe 308. A transmission belt 314 is rotatably connected between the two pulleys 313. At the same time, the driving motor 311 is started to drive the rotating shaft 312 to rotate, thereby driving the pulley 313 on the right side of the rotating shaft 312 to rotate, and then driving the pulley 313 on the outer surface of the connecting pipe 308 to rotate synchronously through the transmission belt 314, so that the connecting pipe 308 rotates inside the sealed bearing 307, thereby driving the overall rotation of the secondary mixing unit to stir the sewage and further improving the effect of stirring and aeration.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A two-stage jet aeration and agitation device, comprising a sewage tank (1) and a water inlet system (2), the water inlet system (2) being installed on the left side of the sewage tank (1), characterized in that: A secondary jet aeration and agitation device is provided on the right side of the water inlet system (2). The secondary jet aeration and agitation device includes a primary jet unit, an oxygen absorption and mixing unit, a secondary mixed flow unit, and an agitation unit. The primary jet unit includes a water inlet coupling device (301), a primary water inlet chamber (302), and a primary jet nozzle (303). The water inlet coupling device (301) is installed on the right side of the water inlet system (2). The primary water inlet chamber (302) is installed at the drain outlet of the water inlet system (2) through a connecting flange, and its right end extends into the interior of the sewage tank (1). The primary jet nozzle (303) is fixedly connected to the right end of the primary water inlet chamber (302).

2. The two-stage jet aeration and agitation device according to claim 1, wherein: The oxygen absorption and mixing unit includes a primary air suction chamber (304), a primary air suction pipe (305), and an air inlet controller (306). The primary air suction chamber (304) is installed outside the primary jet nozzle (303). The primary air suction pipe (305) is fixedly connected to the top center of the primary air suction chamber (304). The air inlet controller (306) is installed above the outer surface of the primary air suction pipe (305).

3. A two-stage jet aeration and agitation device according to claim 2, characterized in that: The secondary mixed flow unit includes a sealed bearing (307), a connecting pipe (308), a water distribution plate (309), and a secondary mixed flow assembly (310). The sealed bearing (307) is installed on the outer surface of the right side of the primary air suction chamber (304). The connecting pipe (308) is rotatably connected to the inside of the sealed bearing (307). The water distribution plate (309) is fixedly connected to the right end of the connecting pipe (308), and its interior is a hollow structure. A plurality of groups of the secondary mixed flow assemblies (310) are annularly installed on the outer surface of the right side of the water distribution plate (309).

4. A two-stage jet aeration and agitation device according to claim 3, characterized in that: The secondary mixed flow assembly (310) includes a secondary water inlet chamber (3101), a secondary mixed flow nozzle (3102), a secondary hybrid chamber (3103), and a secondary diffuser pipe (3104). The secondary water inlet chamber (3101) is fixedly connected to the outer surface of the right side of the water distribution plate (309). The secondary mixed flow nozzle (3102) is fixedly connected to the right end of the secondary water inlet chamber (3101). The secondary hybrid chamber (3103) is installed outside the secondary mixed flow nozzle (3102). The secondary diffuser pipe (3104) is fixedly connected to the right side of the secondary hybrid chamber (3103).

5. A two-stage jet aeration and stirring device according to claim 4, characterized in that: Water inlet holes are annularly and equidistantly formed on the outer surface of the secondary hybrid chamber (3103).

6. A two-stage jet aeration and agitation device according to claim 3, characterized in that: The agitation unit includes a driving motor (311), a rotating shaft (312), and a pulley (313). The driving motor (311) is installed at the front end of the sewage tank (1). The rotating shaft (312) is connected to the output end of the driving motor (311). The pulley (313) is fixedly connected to the right end of the rotating shaft (312).

7. A two-stage jet aeration and agitation device according to claim 6, characterized in that: A pulley (313) is also installed on the outer surface of the connecting pipe (308). A transmission belt (314) is rotatably connected between the two pulleys (313).

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