CN220376488U

CN220376488U - Aeration system and combined constructed wetland

Info

Publication number: CN220376488U
Application number: CN202321420091.5U
Authority: CN
Inventors: 江昕怡; 梁建华
Original assignee: China Aviation Changsha Design And Research Co ltd
Current assignee: China Aviation Changsha Design And Research Co ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2024-01-23
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses an aeration system and a combined constructed wetland, wherein the aeration system comprises a first cavity, an air inlet pipe and an air outlet pipe; a piston plate is arranged in the first cavity, the piston plate divides the first cavity into an upper cavity and a lower cavity, the side wall of the piston plate is connected with the inner wall of the first cavity in a sliding and sealing manner, and the piston plate is connected with the bottom wall of the first cavity through a reset element; a cam which is in butt joint with the piston plate is arranged in the upper cavity and is driven by the driving mechanism to rotate; the air inlet pipe and the air outlet pipe are both communicated with the lower cavity, a first one-way valve is arranged on the air inlet pipe, and a second one-way valve or a liquid seal structure is arranged on the air outlet pipe. The aeration system can realize continuous aeration, and can increase the oxygen content in the water body of the constructed wetland when being used for the constructed wetland, thereby improving the sewage treatment efficiency.

Description

Aeration system and combined constructed wetland

Technical Field

The utility model belongs to the technical field of water treatment equipment, and particularly relates to an aeration system and a combined constructed wetland.

Background

Microorganisms in the wetland system are the main force for degrading pollutants in water, aerobic microorganisms decompose most of organic matters in wastewater into carbon dioxide and water through respiration, anaerobic bacteria decompose the organic matters into carbon dioxide and methane, nitrifying bacteria nitrify ammonium salts, denitrifying bacteria reduce nitrate nitrogen into nitrogen, and the like. Therefore, in order to improve the efficiency and quality of sewage treatment, many cities today are provided with artificial wetlands for sewage treatment. However, in actual use, due to interception of suspended matters in sewage and accumulation and falling of biological films on the surfaces of matrixes, the problem of blockage of the constructed wetland is easily caused in actual operation, and meanwhile, after long-time use, the oxygen content in the water body of the constructed wetland is reduced, and the treatment efficiency of the constructed wetland on sewage is also greatly reduced.

Disclosure of Invention

The utility model aims to provide an aeration system and a combined constructed wetland, wherein the aeration system can realize continuous aeration, and can increase the oxygen content in the water body of the constructed wetland when being used for the constructed wetland, thereby improving the sewage treatment efficiency.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an aeration system comprises a first cavity, an air inlet pipe and an air outlet pipe; a piston plate is arranged in the first cavity, the piston plate divides the first cavity into an upper cavity and a lower cavity, the side wall of the piston plate is connected with the inner wall of the first cavity in a sliding and sealing manner, and the piston plate is connected with the bottom wall of the first cavity through a reset element; a cam which is in butt joint with the piston plate is arranged in the upper cavity and is driven by the driving mechanism to rotate; the air inlet pipe and the air outlet pipe are both communicated with the lower cavity, and a first one-way valve is arranged on the air inlet pipe and only allows air to enter the lower cavity through the air inlet pipe; and a second one-way valve or a liquid sealing structure is arranged on the exhaust pipe, and the second one-way valve or the liquid sealing structure only allows the gas in the lower cavity to be exhausted through the exhaust pipe.

When the cam is rotated under the action of the driving mechanism, the cam compresses the piston plate to move downwards when the cam rotates downwards, the volume of a closed space formed by the piston plate and the lower cavity is reduced, and air in the closed space is discharged through a one-way valve or a liquid seal structure on the exhaust pipe; when the cam rotates upwards, the piston plate moves upwards under the action of the reset element, the volume of a closed space formed by the piston plate and the lower cavity is increased, external air enters the closed space through the one-way valve on the air inlet pipe for storage, and when the closed space is compressed, the air in the closed space can be discharged. The aeration system can realize continuous aeration, and can continuously increase the oxygen content in the water body of the constructed wetland when being applied to the constructed wetland, thereby improving the sewage treatment efficiency.

Preferably, the liquid seal structure is an n-type liquid seal pipe, the height of the n-type liquid seal pipe is larger than the maximum height of the piston plate in the first cavity, and liquid is arranged in the outlet end of the exhaust pipe.

Preferably, the return element is a return spring.

Based on the same inventive concept, the utility model also provides a combined constructed wetland, which comprises a pool body and is structurally characterized in that: the device also comprises a base and an aeration system as described above, wherein the first cavity is arranged on the base; the cell body sets up in one side of base, the exit end of blast pipe is linked together with the cell body. By arranging the aeration system, the oxygen content in the water body of the constructed wetland can be continuously increased, so that the sewage treatment efficiency is improved.

Preferably, a horizontal pipe is arranged on the inner wall of the tank body, the horizontal pipe is communicated with the exhaust pipe, and a plurality of aeration holes are arranged on the peripheral wall of the horizontal pipe. A plurality of aeration holes are arranged, so that the tank body can be fully aerated.

Preferably, the base is also provided with a filter tank, and the outlet of the water inlet pipe is arranged above the filter tank; the filter tank is characterized in that a drain pipe is arranged at the bottom of the side wall of the filter tank, the extension end of the drain pipe is positioned above the tank body, and a filter screen is arranged between the water inlet pipe and the drain pipe. The sewage enters the filter tank through the drain pipe, impurities in the sewage are filtered through the filter screen, and then enter the tank body through the drain pipe, and the sewage is purified through plants planted on the water surface of the tank body water body and used for purifying and decomposing the sewage.

Preferably, a first transmission roller is arranged in the filter tank, and a second transmission roller is arranged outside the filter tank; the filter screen is wound on the first transmission roller and the second transmission roller, a brush plate is arranged on the outer side of the second transmission roller, and bristles of the brush plate are abutted to the filter screen. After the filter screen is used for a period of time, impurities are accumulated, the first conveying roller and the second conveying roller are rotated, impurities on the filter screen are cleaned through the brush plate, the filter screen is prevented from being blocked by the impurities, and the service life of the filter screen can be prolonged.

Preferably, the base is further provided with a placing groove, the second conveying roller is arranged in the placing groove, and the brush plate is arranged on the side wall of the placing groove; the bottom of the placing groove is provided with a slag collecting groove, and the slag collecting groove arranged below the brush plate is communicated with the placing groove. The slag collecting groove is arranged to facilitate the collection and cleaning of impurities on the filter screen.

Preferably, the cam is connected with a second driving wheel through a second rotating shaft, and the second rotating shaft is connected with the output end of the driving mechanism; the first transmission roller is connected with a first transmission wheel through a first rotating shaft, and a transmission belt is sleeved on the first transmission wheel and the second transmission wheel together. The driving mechanism drives the second driving wheel and the cam to rotate through the second rotating shaft, the cam rotates to realize continuous aeration on the tank body, and the second driving wheel drives the first driving wheel to rotate through the driving belt, so that the first transmission roller is driven to rotate towards the direction where the brush plate is located, the filter screen drives impurities on the filter screen to be close to the brush plate, and the filter screen can be cleaned. The combined constructed wetland can clean the filter screen while aerating, and the aeration system and the filter screen share the same driving mechanism, so that the occupied space of equipment can be reduced.

Preferably, a one-way bearing is further arranged between the first driving wheel and the first rotating shaft. The unidirectional bearing only allows the first transmission roller to rotate towards the direction where the brush plate is located, as a certain amount of impurities can be borne on the filter screen, when the filter screen needs to be cleaned, the driving mechanism drives the second driving wheel to rotate, and the driving belt drives the first driving wheel to rotate, so that the first transmission roller is driven to rotate towards the direction where the brush plate is located, the first transmission roller is driven to move towards one side of the brush plate by the filter screen, and the filter screen drives the impurities on the filter screen to be close to the brush plate, so that the filter screen can be cleaned. When the filter screen is not required to be cleaned, the driving motor drives the second driving wheel to rotate in the opposite direction, at the moment, the first driving wheel synchronously rotates, but under the action of the one-way bearing, the first rotating shaft does not rotate, and the filter screen does not move at the moment, so that the filter screen can be periodically cleaned.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the combined constructed wetland, the oxygen content in the constructed wetland water body can be continuously increased by arranging the aeration system, so that the sewage treatment efficiency is improved.

2. According to the combined constructed wetland, impurities in sewage can be effectively intercepted by the filter screen, and the tank body can be continuously aerated, so that the oxygen content of the water body in the tank body is increased, and the sewage treatment efficiency of a wetland system in the tank body is improved.

3. The combined constructed wetland can clean the filter screen while aerating, and the aeration system and the filter screen share the same driving mechanism, so that the occupied space of equipment can be reduced.

4. The combined constructed wetland can periodically remove impurities and clean the filter screen, thereby avoiding the filter screen from being blocked by the impurities and prolonging the service life.

Drawings

FIG. 1 is a schematic view of a combined constructed wetland body structure according to the present utility model;

FIG. 2 is a schematic rear side view of the structure of FIG. 1;

fig. 3 is a schematic view of another combined constructed wetland body structure according to the utility model.

In the figure:

1-base, 2-pool body, 3-wetland foundation, 4-horizontal pipe, 5-first cavity, 6-spring, 7-piston plate, 8-air inlet pipe, 9-exhaust pipe, 10-cam, 11-filter tank, 12-water inlet pipe, 13-placing tank, 14-first transmission roller, 15-filter screen, 16-brush plate, 17-slag collecting tank, 18-drain pipe, 19-first driving wheel and 20-driving belt; 21-a second driving wheel; 22-a second rotating shaft; 23-a second transfer roller; 24-a first rotating shaft; 25-a first one-way valve; 26-a second one-way valve; 27-liquid seal structure.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

Example 1:

as shown in fig. 1, the combined constructed wetland comprises a tank body 2, a wetland foundation 3 is arranged at the inner bottom wall of the tank body 2, and plants for purifying and decomposing sewage are planted on the water surface of the water body of the tank body 2. The horizontal pipe 4 is fixedly arranged on the inner wall of the tank body 2 horizontally, and a plurality of aeration holes are communicated with the peripheral wall of the horizontal pipe 4. The wetland foundation 3 is sequentially provided with an element filling layer, a concrete layer, an HDPE impermeable membrane, a lower pebble layer, an upper pebble layer and sand from bottom to top, and granular impurities in sewage can be precipitated and filtered through the wetland foundation 3.

The outer side of the left side wall of the tank body 2 is provided with a base 1, the upper part of the base 1 is provided with a filter tank 11, the inner wall of the filter tank 11 is horizontally provided with a placing groove 13, a first conveying roller 14 is arranged in the filter tank 11, and a second conveying roller 23 is arranged in the placing groove 13. The first conveying roller 14 and the second conveying roller 23 are horizontally arranged and are positioned at the same height, and the first conveying roller 14 and the second conveying roller 23 are sleeved with the filter screen 15 together. A water inlet pipe 12 for leading in sewage is fixedly arranged above the base 1, and the opening of the lower end of the water inlet pipe 12 is opposite to the upper end face of the filter screen 15. Be equipped with in the standing groove 13 with filter screen 15 complex clean mechanism, clean mechanism includes the brush board 16 of horizontal fixed mounting on the standing groove 13 cell wall, brush hair of brush board 16 all the time with filter screen 15 lateral wall looks butt, then along with the rotation of filter screen 15, brush board 16 can carry out edulcoration clean to filter screen 15. The inner bottom wall of the placing groove 13 is vertically provided with a slag collecting groove 17 which is opposite to the brush plate 16, the wall of the slag collecting groove 17 is provided with a slag discharging port, and a sealing door is arranged in the slag discharging port, so that impurities in the slag collecting groove 17 can be conveniently discharged. The bottom of the inner side wall of the filter tank 11 is provided with a drain pipe 18, and one end of the drain pipe 18 far away from the filter tank 11 is positioned above the opening of the tank body 2.

The base 1 is also provided with a first cavity 5, a piston plate 7 is arranged in the first cavity 5, the piston plate 7 divides the first cavity 5 into an upper cavity and a lower cavity, and the side wall of the piston plate 7 is in sliding sealing connection with the inner wall of the first cavity 5. The piston plate 7 is connected with the bottom wall of the first cavity 5 through a reset element 6, and the reset element 6 is a reset spring. A cam 10 abutting against the piston plate 7 is arranged in the upper cavity, and the cam 10 rotates under the drive of the driving mechanism. An air inlet pipe 8 is arranged on the side wall of the lower cavity, an air outlet pipe 9 is arranged between the lower cavity and the side wall of the tank body 2, and the air outlet pipe 9 is communicated with the horizontal pipe 4. The air inlet pipe 8 is internally provided with a first one-way valve 25, the air outlet pipe 9 is internally provided with a second one-way valve 26, the first one-way valve 25 in the air inlet pipe 8 only allows external air to enter the lower cavity through the air inlet pipe 8, and the second one-way valve 26 in the air outlet pipe 9 only allows air in the lower cavity to enter the horizontal pipe 4 through the air outlet pipe 9.

As shown in fig. 1 and 2, the cam 10 is connected to a second rotating shaft 22, and one end of the second rotating shaft 22 extends out of the base 1 and is coaxially and fixedly sleeved with a second driving wheel 21. The driving mechanism is fixedly arranged on the base 1, the driving mechanism adopts a driving motor, and an output shaft of the driving motor is fixedly connected with the second rotating shaft 22 in a coaxial way. The first transmission roller 14 is provided with a first rotating shaft 24, one end of the first rotating shaft 24 extends out of the base 1 and is rotatably sleeved with a first driving wheel 19 through a one-way bearing, and the first driving wheel 19 and the second driving wheel 21 are jointly sleeved with a driving belt 20.

The functional principle of the combined constructed wetland is illustrated by the following operation modes: during operation, sewage falls on filter screen 15 from inlet tube 12, and impurity in the sewage is intercepted by filter screen 15, and sewage falls in cell body 2 through drain pipe 18, and the wetland system in cell body 2 overflows the discharge after purifying and decomposing sewage. At the same time, the driving motor is started in the forward direction, the driving motor drives the second rotating shaft 22 to rotate in the forward direction, the second rotating shaft 22 drives the first driving wheel 19 to synchronously rotate in the forward direction through the transmission of the second driving wheel 21 and the driving belt 20, and the first rotating shaft 24 is kept motionless under the action of the unidirectional bearing. Along with the rotation of the second rotating shaft 22, the second rotating shaft 22 drives the cam 10 to rotate rapidly, and as the peripheral wall of the cam 10 abuts against the upper surface of the piston plate 7 and the reset element 6 is arranged, the piston plate 7 moves up and down along the vertical direction, so that external gas can be periodically pumped and evenly injected into the water body in the tank body 2 through the exhaust pipe 9 and the horizontal pipe 4, the water body in the tank body 2 can be aerated, the oxygen content in the water body in the tank body 2 is improved, and the sewage treatment efficiency of a wetland system in the tank body 2 is improved.

After accumulating more impurity above filter screen 15, reverse start driving motor, driving motor drive second pivot 22 reverse rotation, through the transmission of second drive wheel 21 and drive belt 20, first drive wheel 19 synchronous reverse rotation, under the effect of one-way bearing, first pivot 24 rotates, first pivot 24 drives corresponding first transmission roller 14 rotation, first transmission roller 14 drives filter screen 15 anticlockwise rotation, filter screen 15 drives impurity on it and is close to brush board 16, brush board 16 carries out edulcoration cleaning to filter screen 15, thereby avoid filter screen 15 to be blocked.

Example 2:

as shown in fig. 3, the combined constructed wetland according to the present embodiment is different from that according to embodiment 1 only in that the exhaust pipe 9 is not provided with the second check valve 26, but a liquid seal structure 27 is used. The fluid seal 27 is an n-type fluid seal tube having a height greater than the maximum height of the piston plate 7 within the first chamber 5. By providing an n-type liquid seal tube, only the gas in the lower portion of the first chamber 5 is allowed to enter the horizontal tube 4 through the exhaust pipe 9. In this way, during the upward movement of the piston plate 7, the external air enters the lower part of the first cavity 5 through the air inlet pipe 8, and the liquid in the tank body 2 enters the n-type liquid seal pipe to form a liquid seal, so that the first cavity 5 is inflated. In the process of downward movement of the piston plate 7, due to the existence of the first one-way valve 25, the gas can only drive the liquid seal in the liquid seal pipe to enter the tank body 2, so that the gas is pressed into the horizontal pipe 4, and aeration of the tank body is realized.

The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the present utility model, in which equivalents thereof will occur to persons skilled in the art upon reading the present utility model, are intended to fall within the scope of the utility model as defined by the appended claims.

Claims

1. An aeration system, characterized in that: comprises a first cavity (5), an air inlet pipe (8) and an air outlet pipe (9);

a piston plate (7) is arranged in the first cavity (5), the piston plate (7) divides the first cavity (5) into an upper cavity and a lower cavity, the side wall of the piston plate (7) is in sliding sealing connection with the inner wall of the first cavity (5), and the piston plate (7) is connected with the bottom wall of the first cavity (5) through a reset element (6); a cam (10) which is in butt joint with the piston plate (7) is arranged in the upper cavity, and the cam (10) rotates under the drive of the driving mechanism;

the air inlet pipe (8) and the air outlet pipe (9) are communicated with the lower cavity, a first one-way valve (25) is arranged on the air inlet pipe (8), and the first one-way valve (25) only allows air to enter the lower cavity through the air inlet pipe (8); the exhaust pipe (9) is provided with a second one-way valve (26) or a liquid sealing structure (27), and the second one-way valve (26) or the liquid sealing structure (27) only allows the gas in the first cavity (5) to be exhausted through the exhaust pipe (9).

2. An aeration system according to claim 1, wherein: the liquid seal structure (27) is an n-type liquid seal pipe, the height of the n-type liquid seal pipe is larger than the maximum height of the piston plate (7) in the first cavity (5), and liquid is arranged in the outlet end of the exhaust pipe (9).

3. An aeration system according to claim 1, wherein: the reset element (6) is a reset spring.

4. A combined constructed wetland comprises a pool body (2); the method is characterized in that: -a base (1) and an aeration system according to any one of claims 1 to 3, the first chamber (5) being arranged on the base (1); the pool body (2) is arranged on one side of the base (1), and the outlet end of the exhaust pipe (9) is communicated with the pool body (2).

5. The combined constructed wetland according to claim 4, wherein: the water tank is characterized in that a horizontal pipe (4) is arranged on the inner wall of the tank body (2), the horizontal pipe (4) is communicated with an exhaust pipe (9), and a plurality of aeration holes are formed in the peripheral wall of the horizontal pipe (4).

6. The combined constructed wetland according to claim 4, wherein: a filter tank (11) is further arranged on the base (1), and an outlet of the water inlet pipe (12) is arranged above the filter tank (11); the filter tank is characterized in that a drain pipe (18) is arranged at the bottom of the side wall of the filter tank (11), the extension end of the drain pipe (18) is positioned above the tank body (2), and a filter screen (15) is arranged between the water inlet pipe (12) and the drain pipe (18).

7. The combined constructed wetland according to claim 6, wherein: a first transmission roller (14) is arranged in the filter tank (11), and a second transmission roller (23) is arranged outside the filter tank (11); the filter screen (15) is wound on the first conveying roller (14) and the second conveying roller (23), a brush plate (16) is arranged on the outer side of the second conveying roller (23), and bristles of the brush plate (16) are abutted to the filter screen (15).

8. The combined constructed wetland according to claim 7, wherein: a placing groove (13) is further formed in the base (1), the second conveying roller (23) is arranged in the placing groove (13), and the brush plate (16) is arranged on the side wall of the placing groove (13); the bottom of the placing groove (13) is provided with a slag collecting groove (17), and the slag collecting groove (17) arranged below the brush plate (16) is communicated with the placing groove (13).

9. The combined constructed wetland according to claim 7, wherein: the cam (10) is connected with a second driving wheel (21) through a second rotating shaft (22), and the second rotating shaft (22) is connected with the output end of the driving mechanism; the first transmission roller (14) is connected with a first transmission wheel (19) through a first rotating shaft (24), and a transmission belt (20) is sleeved on the first transmission wheel (19) and the second transmission wheel (21) together.

10. The combined constructed wetland according to claim 9, wherein: a one-way bearing is also arranged between the first driving wheel (19) and the first rotating shaft (24).