CN105080210A - Aerated filtration treatment device for aquaculture wastewater - Google Patents

Abstract

The invention discloses an aeration and filtration treatment device for aquaculture wastewater, and aims to provide an aeration and filtration treatment device for aquaculture wastewater that can perform circular treatment and utilization of aquaculture wastewater. It includes a sedimentation tank, an aeration tank, mechanical filtration equipment and an aeration tank, the sedimentation tank is connected with the aeration tank, the mechanical filtration equipment includes a suction pipe, a water pump and a first drain pipe, and one end of the suction pipe is It is connected with the aeration tank, the other end is connected with the water inlet of the water pump, the water inlet port of the first drain pipe is connected with the water outlet of the water pump, and the water outlet port of the first drain pipe is connected with the aeration tank.

Description

Aeration and filtration treatment device for aquaculture wastewater

technical field

The invention relates to a water particle cleaning device, in particular to an aeration and filtration treatment device for aquaculture wastewater.

Background technique

In recent years, with the rapid development of high-density artificial aquaculture and the aggravation of aquaculture environmental pollution, the degree of pollution of aquaculture water far exceeds the purification capacity of the water itself. Pollutants formed by residual feed and fish excrement in the process of artificial aquaculture cause water body self-pollution and even water quality deterioration, manifested as: severe eutrophication of water body, increase of suspended solids in water body, biological oxygen demand, chemical oxygen demand , nitrite nitrogen, etc. content increased, dissolved oxygen decreased.

The traditional aquaculture wastewater treatment method is to discharge the aquaculture water and inject it into a fresh water body; this kind of aquaculture wastewater treatment method is likely to cause water pollution, and the light ones will have adverse effects on the growth, development, and reproduction of aquatic economic animals; It will destroy the microenvironmental ecosystem of the water body. Therefore, the treatment and recycling of aquaculture wastewater has gradually attracted attention.

On the other hand, the current solid/liquid separation technology is mainly a wastewater treatment technology for the removal of suspended solids in aquaculture wastewater. The removal of suspended solid waste is a solid/liquid separation process, which mainly includes the following two separation methods: gravity separation and mechanical filtration. The gravity separation method is to use gravity to separate solid particles from the liquid phase; due to the different density of solid particles and liquid phase (that is, the density of particles is high), in a relatively static liquid column, solid particles are deposited under the action of gravity, thereby achieving Solid/liquid separation.

The mechanical filtration method is easy to use and flexible, and it is the fastest and most economical method to remove suspended solid particles. It is the main means for solid/liquid separation in aquaculture systems. A filter with a certain pore size intercepts particulate matter to achieve the purpose of removing suspended solid particles. Although the mechanical filtration method is convenient and flexible to use; however, in the process of filtering suspended solid particles in the current mechanical filtration device, a large amount of suspended solid particles will gather on the surface of the filter layer, which will easily block the filter layer and cause the filter layer to fail. The problem of reduced filtration efficiency and reduced filtration effect.

Contents of the invention

The first object of the present invention is to overcome the deficiencies in the prior art, and to provide an aeration and filtration treatment device for aquaculture wastewater that is recycled and utilized.

Another purpose of the present invention on the basis of the first purpose is to provide an aeration and filtration treatment device for aquaculture wastewater in order to overcome the deficiencies in the prior art mechanical filtration devices. The mechanical filtration equipment in the device is easy to operate, and the equipment High utilization rate, good filtration effect, can effectively clean up suspended solid particles in aquaculture wastewater; and can effectively solve the problem that the filter layer is easy to block during the filtration of suspended solid particles, causing the filter layer to fail, reducing the filtration efficiency and the filtration effect. question.

Technical scheme of the present invention is:

An aeration and filtration treatment device for aquaculture wastewater, comprising a sedimentation tank, an aeration tank, mechanical filtration equipment and an aeration tank, the sedimentation tank is connected to the aeration tank, and the mechanical filtration equipment includes a suction pipe, a water pump and The first drainage pipe, one end of the pumping pipe is connected to the aeration tank, the other end is connected to the water inlet of the water pump, the water inlet port of the first drainage pipe is connected to the water outlet of the water pump, and the first drainage pipe The water outlet is connected to the oxygenation pool.

The aeration and filtration treatment device for aquaculture wastewater of the present scheme can perform recycling treatment and utilization of aquaculture wastewater.

Preferably, the sedimentation tank is divided into tortuous water flow channels by setting several partition walls, and an aeration device is provided at the bottom of the aeration tank.

As preferably, the mechanical filtering device also includes a frame, a diversion pipe coaxially arranged on the frame and a cleaning pipe, a first shaft rod coaxially arranged in the diversion pipe, arranged on the frame and connected to the first shaft The rods are parallel to the first guide rail, the sliding seat that can slide along the first guide rail, the first pushing actuator used to move the sliding seat, the first on-off sliding sleeve that can be slidably arranged in the guide pipe, and can be slidably arranged on the Clean the piston body in the pipeline, the second on-off sliding sleeve and the particle filter device; the two ends of the diversion pipeline are closed, and the diversion pipeline is provided with a diversion pipeline inlet and a diversion pipeline outlet; one end of the cleaning pipeline Opening, the other end is closed, and the opening end of the cleaning pipeline is close to the diversion pipeline, and the cleaning pipeline is provided with a cleaning pipeline inlet and a cleaning pipeline outlet; Connect; the water inlet port of the first drainage pipe is sealed with the outlet of the cleaning pipe;

Both ends of the first shaft run through the diversion pipe, one end of the first shaft is rotatably connected to the sliding seat through a bearing or a bearing seat, and the other end is connected to the piston body. On the first shaft, A drive impeller is located in the guide pipe, the first on-off sliding sleeve is connected to the first shaft through a first connecting rod, and a first front sealing ring and a first rear sealing ring are arranged on the outer surface of the first on-off sliding sleeve. A sealing ring; the inner wall of the cleaning pipeline is provided with a limit projection, the piston body and the opening end of the cleaning pipeline are located on the same side of the limit projection, and the inlet of the cleaning pipeline, the second on-off sliding sleeve and the cleaning pipeline The closed ends are all located on the same side of the limit protrusion, and a compression spring is provided between the second on-off sliding sleeve and the closed end of the cleaning pipeline to make the second on-off sliding sleeve lean against the limit protrusion, An axially extending ejector rod is provided on the end surface of the second on-off sliding sleeve close to the piston body, and a second front sealing ring and a second rear sealing ring are provided on the outer surface of the second on-off sliding sleeve; the particle filtering device includes A plurality of spacer sleeves that can be slidably arranged in the second on-off sliding sleeve, a filter layer arranged in each spacer sleeve and a second connecting shaft rod connected with the piston body, the second connecting shaft rod and the first shaft rod The rods are coaxial, and the second connecting shaft and the first shaft are located on opposite sides of the piston body, the second connecting shaft passes through each filter layer, and each spacer is connected to the second connecting shaft through a connecting piece;

A first limit stopper and a second limit stopper are provided on the first guide rail, and the first limit stopper and the second limit stopper are located on opposite sides of the slide seat;

When the sliding seat moves along the first guide rail and abuts against the first limit stopper: the inlet of the diversion pipe is located between the first front sealing ring and the first rear sealing ring, and the piston body is located between the cleaning pipe inside, and the end of the ejector rod abuts against the end face of the piston body, the second on-off sliding sleeve is located between the cleaning pipeline inlet and the cleaning pipeline outlet, and each spacer is located in the second on-off sliding sleeve;

When the sliding seat moves along the first guide rail and abuts against the second limit block: the first on-off sliding sleeve is located between the inlet of the diversion pipe and the outlet of the diversion pipe, and the piston body and the particle filter The device is located outside the cleaning pipeline, the second on-off sliding sleeve abuts against the limit projection, and the inlet of the cleaning pipeline is located between the second front sealing ring and the second rear sealing ring.

The aeration and filtration treatment device for aquaculture wastewater of this scheme is easy to operate, has high equipment utilization rate and good filtering effect, and can effectively clean suspended solid particles in the aquaculture wastewater; Blockage, causing the filter layer to fail, reducing the filtration efficiency and the filtration effect.

Preferably, it also includes a self-cleaning device, the self-cleaning device includes a limit lever arranged between the diversion pipe and the cleaning pipe, a number of first bushes that are rotatably arranged on the second connecting shaft, and are arranged on each The brush rods on the first shaft sleeves and the self-adaptive stop structures arranged at the ends of the brush rods, the first shaft sleeves are equidistantly distributed, and one filter filter is provided between two adjacent first shaft sleeves. A mesh layer, the brush rod extends radially along the second connecting shaft, and a number of bristles are provided on the outer surface of the brush rod;

The limit gear rod is parallel to the first shaft, and the distance between the limit gear rod and the axis of the first shaft is greater than the radius of the outer peripheral surface of the spacer,

The self-adaptive stop structure includes a stop bar rotatably arranged at the end of the brush bar through a rotating shaft, and the rotating shaft is perpendicular to the second connecting shaft.

The self-cleaning device of this scheme can not only effectively clean the suspended solid particles accumulated on each filter layer under the premise of ensuring the normal operation of the aeration and filtration treatment device for aquaculture wastewater; it also makes full use of the aeration and filtration treatment of aquaculture wastewater The existing power source in the device is used to clean the suspended solid particles on each filter layer without adding additional power equipment, which can effectively improve equipment utilization and reduce equipment cost and energy consumption.

Preferably, a magnet is provided inside the limit gear lever, and a rubber sleeve is provided outside the limit gear lever; the stop gear lever is an iron rod.

Preferably, the self-cleaning device includes several cleaning nozzles arranged on the frame and between the guide pipe and the cleaning pipeline, the cleaning nozzles are located above the cleaning pipeline, and the nozzles of the cleaning nozzles face downward. The self-cleaning device of this solution is beneficial to improve the cleaning effect on the filter net layer, so that the particle filtering device can be used for a long time and improve the filtering effect.

Preferably, a limit rod is coaxially provided in the cleaning pipeline, and the limit rod is located between the second on-off sliding sleeve and the closed end of the cleaning pipeline, and one end of the limit rod extends into the second on-off sliding sleeve, and The limit rod and the second on-off sliding sleeve are connected through the second connecting rod; when the slide seat moves along the first guide rail and abuts against the first limit block: the limit rod and the cleaning pipeline The distance between the closed ends of the cleaning pipe is smaller than the distance between the outlet of the cleaning pipe and the second on-off sliding sleeve.

The structural limit rod of this scheme can prevent the second on-off sliding sleeve from blocking the outlet of the cleaning pipeline, which affects the support and use of the aeration and filtration treatment device for aquaculture wastewater.

Preferably, the compression spring is sleeved on the limit rod, and one end of the compression spring abuts against the second connecting rod, and the other end abuts against the closed end of the cleaning pipeline.

As a preference, a second shaft sleeve is sleeved on the first shaft in the first on-off sliding sleeve, and the second shaft sleeve is connected to the first shaft through a bearing. between the broken sliding sleeve and the second shaft sleeve, and connect the first on-off sliding sleeve and the second shaft sleeve.

Preferably, a flow meter is provided between the water inlet port of the first drain pipe and the outlet of the cleaning pipe. This scheme uses a flowmeter to measure the flow rate in the outlet of the cleaning pipeline. During the process of filtering suspended solid particles, when the flow rate measured by the flowmeter is less than the set value, it means that there are too many suspended solid particles accumulated on the filter layer, resulting in The water flow is blocked; at this time, the first shaft rod can be driven by the first pushing actuator, so that the piston body and the particle filtering device can be moved to the outside of the cleaning pipeline for cleaning, which is beneficial to improving the cleaning efficiency of suspended solid particles in the water area.

Preferably, the first push actuator is a push cylinder.

Preferably, it also includes a garbage recovery bucket with an open upper end, the garbage recovery bucket is located between the diversion pipe and the cleaning pipeline, and the open end of the cleaning pipeline extends directly above the garbage collection bucket.

The beneficial effects of the present invention are:

First, it can recycle and utilize aquaculture wastewater.

Second: The mechanical filtration equipment has the characteristics of convenient operation, high equipment utilization rate, good filtration effect, and can effectively clean the suspended solid particles in the aquaculture wastewater, and can effectively solve the problem that the filter layer is easy to block during the filtration of suspended solid particles, causing The failure of the filter layer reduces the filtration efficiency and the filtration effect.

Description of drawings

Fig. 1 is a kind of structure diagram of the aeration filtration treatment device of aquaculture wastewater of the present invention.

Fig. 2 is a structural schematic view of the mechanical filtering device of the present invention during operation.

Fig. 3 is a schematic diagram of a partial structure of the cleaning pipeline in Fig. 2 .

Fig. 4 is a partial enlarged view of A in Fig. 3 .

Fig. 5 is another structural schematic view of the mechanical filtering device of the present invention during operation.

Fig. 6 is a schematic diagram of a partial structure of the cleaning pipeline in Fig. 5 .

FIG. 7 is a partial enlarged view of B in FIG. 5 .

In the figure: sedimentation tank 1c, partition wall 1c1; aeration tank 2c; aeration tank 4c; mechanical filtration equipment 3c, water pump 1, water inlet pipe 1a, diversion pipe 2, diversion pipe inlet 2a, diversion pipe inlet 2b , cleaning pipeline 3, cleaning pipeline inlet 31, cleaning pipeline outlet 32, flow meter 33, pumping pipeline 3c1, first drain pipe 3c2, second drain pipe 3c3, second on-off sliding sleeve 4, second front sealing ring 41, The second rear sealing ring 42, the particle filter device 5, the second connecting shaft rod 51, the spacer 52, the filter layer 53, the piston body 6, the self-cleaning device 7, the limit lever 71, the first bushing 72, the brush Rod 73, bristles 74, stop gear rod 75, rotating shaft 76, first shaft rod 8, second bushing 9, first on-off sliding sleeve 10, driving impeller 11, first push actuator 12, first limit Block 13, sliding seat 14, first guide rail 15, second limit block 16, garbage collection bin 17, ejector rod 18, limit bump 19, compression spring 20, limit rod 21, second connecting rod twenty two.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in FIG. 1 , an aeration and filtration treatment device for aquaculture wastewater includes a sedimentation tank 1c, an aeration tank 2c, a mechanical filtration device 3c and an aeration tank 4c. In the sedimentation tank, several partition walls 1c1 are arranged to divide the sedimentation tank into tortuous water flow channels. There is an aeration device at the bottom of the aeration tank. An aeration machine is provided in the aeration pool.

As shown in Figure 2, the mechanical filtering device 3c comprises a frame, a garbage collection bucket 17 with an upper end opening, a water suction pipe 3c1, a first drain pipe 3c2, a second drain pipe 3c3, a water pump 1, and a self-cleaning device 7 coaxially arranged on The diversion pipeline 2 and the cleaning pipeline 3 on the frame are coaxially arranged on the first shaft 8 in the diversion duct, and the first guide rail 15 which is arranged on the frame and is parallel to the first shaft can move along the first The sliding seat 14 of the guide rail is arranged on the frame to be used for moving the first push actuator 12 of the sliding seat, the first on-off sliding sleeve 10 that can be slidably arranged in the flow guide pipe, and the first on-off sliding sleeve 10 that can be slidably arranged in the cleaning pipe Piston body 6, second on-off sliding sleeve 4 and particle filtering device 5. The first guide rail is provided with a first limit stop 13 and a second limit stop 16, and the first limit stop and the second limit stop are located on opposite sides of the sliding seat. The first push actuator is a push cylinder.

Diversion pipes and cleaning pipes are set horizontally. The diversion pipe and the cleaning pipe are circular pipes. There is a gap between the diversion pipe and the cleaning pipe. Both ends of the diversion pipe are closed. The diversion pipe is provided with a diversion pipe inlet 2a and a diversion pipe inlet 2b, and the diversion pipe inlet is close to the cleaning pipe, and the diversion pipe outlet is away from the cleaning pipe. One end of the cleaning pipe is open and the other end is closed, and the opening end of the cleaning pipe is close to the diversion pipe, and the closed end of the cleaning pipe is far away from the diversion pipe. The cleaning pipeline is provided with a cleaning pipeline inlet 31 and a cleaning pipeline outlet 32, and the cleaning pipeline inlet is close to the opening end of the cleaning pipeline, and the cleaning pipeline outlet is close to the closed end of the cleaning pipeline. The inlet of the diversion pipe and the inlet of the cleaning pipe are respectively connected to the water outlet of the water pump through the water inlet pipe 1a. The rubbish recycling bin 17 is located between the diversion pipe and the cleaning pipe, the rubbish recycling bin is located below the diversion pipe and the cleaning pipe, and the open end of the cleaning pipe extends to the top of the rubbish recycling bin.

Both ends of the first shaft run through the diversion pipe, specifically, shaft holes are respectively provided at the centers of both ends of the diversion pipe, and the first shaft passes through the shaft holes at both ends of the diversion pipe. A shaft hole sealing ring matched with the first shaft rod is respectively arranged on the inner surfaces of the two shaft holes. Bearings or second shaft sleeves are also arranged in the two shaft holes, and the first shaft passes through the bearings or the second shaft sleeves in the shaft holes. The first shaft can rotate relative to the shaft hole, and the first shaft can move along the axial direction of the shaft hole. One end of the first shaft rod is rotatably connected with the slide seat through a bearing or a bearing seat, and the other end is fixedly connected with the piston body. A driving impeller 11 is fixed on the first shaft and is located in the guide duct. The driving impeller is located between the inlet of the diversion duct and the outlet of the diversion duct. The first on-off sliding sleeve is connected with the first shaft through the first connecting rod. Specifically, the second shaft sleeve 9 is sleeved on the first shaft in the first on-off sliding sleeve, and the second shaft sleeve is connected to the first shaft. The first shaft rods are connected by bearings, the first connecting rod is located between the first on-off sliding sleeve and the second shaft sleeve, and connects the first on-off sliding sleeve and the second shaft sleeve. The second shaft sleeve can rotate relative to the first shaft, but cannot move along the axial direction of the first shaft. A first front sealing ring and a first rear sealing ring are arranged on the outer surface of the first on-off sliding sleeve.

As shown in FIG. 3 , a limiting protrusion 19 is provided on the inner wall of the cleaning pipeline. The piston body and the opening end of the cleaning pipeline are located on the same side of the limit projection. The inlet of the cleaning pipeline, the second on-off sliding sleeve and the closed end of the cleaning pipeline are all located on the same side of the limiting projection. A limit rod 21 is coaxially arranged in the cleaning pipeline, and the limit rod is located between the second on-off sliding sleeve and the closed end of the cleaning pipeline. One end of the limiting rod extends into the second on-off sliding sleeve, and the limiting rod and the second on-off sliding sleeve are connected through a second connecting rod 22 . A compression spring 20 is provided between the second on-off sliding sleeve and the closed end of the cleaning pipeline to make the second on-off sliding sleeve lean against the limit projection. The compression spring is sheathed on the limit rod, one end of the compression spring is against the second connecting rod, and the other end is against the closed end of the cleaning pipeline. An axially extending push rod 18 is arranged on the end surface of the second on-off sliding sleeve close to the piston body. The push rod is parallel to the first shaft. A second front sealing ring 41 and a second rear sealing ring 42 are arranged on the outer surface of the second on-off sliding sleeve.

The particle filtering device 5 comprises a plurality of spacers 52 slidably arranged in the second on-off sliding sleeve, a filter layer 53 arranged in each spacer, an outer sealing ring arranged on the outer surface of each spacer and the piston body. The connected second connecting shaft 51 . The second connecting shaft rod and the piston body are connected by thread. Each spacer is equidistantly distributed, and each filter mesh layer is equidistantly distributed. The second connecting shaft is coaxial with the first shaft, and the second connecting shaft and the first shaft are located on opposite sides of the piston body. The second connecting shaft passes through each filter layer, and each spacer is connected with the second connecting shaft through a connecting piece. Each spacer can move to the outside of the second on-off sliding sleeve.

As shown in Fig. 2, Fig. 4 and Fig. 7, the self-cleaning device 7 includes a limit gear lever 71 arranged between the diversion pipe and the cleaning pipe, and several first bushes which are rotatably arranged on the second connecting shaft 72. The brush rods 73 arranged on the first bushings, the self-adaptive stop structures arranged at the ends of the brush rods, and a number of cleaning nozzles arranged on the frame and located between the diversion pipe and the cleaning pipe. Each cleaning nozzle is located above the diversion pipe and the cleaning pipe, and the nozzles of the cleaning nozzles are arranged downward. Each cleaning nozzle is located directly above the waste collection bin. The first shaft sleeves are equidistantly distributed. One filter layer is provided between two adjacent first shaft sleeves 72 , that is, one spacer sleeve is provided between two adjacent first shaft sleeves 72 . The brush rod extends radially along the second connecting shaft, and a plurality of bristles 74 are evenly provided on the outer surface of the brush rod. The ends of the bristles rest against the surface of the corresponding filter layer. The limit gear lever is parallel to the first shaft. The distance between the limiting rod and the axis of the first shaft is greater than the radius of the outer peripheral surface of the spacer. The self-adaptive stop structure includes a stop bar 75 rotatably arranged at the end of the brush bar through a rotating shaft 76, and the rotating shaft is perpendicular to the second connecting shaft. The distance between the limit gear lever and the axis of the first shaft is smaller than the sum of the lengths of the stop gear lever and the brush lever. A magnet is arranged in the limit gear lever, and a rubber sleeve is arranged on the outer cover of the limit gear lever. The stop lever is iron.

As shown in Figure 2 and Figure 3, when the sliding seat moves along the first guide rail and abuts against the first limit stopper: the inlet of the diversion pipe is located between the first front sealing ring and the first rear sealing ring; The piston body is located in the cleaning pipeline, and the end of the push rod is against the end surface of the piston body; the second on-off sliding sleeve is located between the cleaning pipeline inlet and the cleaning pipeline outlet, and each spacer is located in the second on-off sliding sleeve; The distance between the limit rod and the closed end of the cleaning pipeline is smaller than the distance between the outlet of the cleaning pipeline and the second on-off sliding sleeve.

As shown in Figure 5 and Figure 6, when the sliding seat moves along the first guide rail and abuts against the second limit stopper: the first on-off sliding sleeve is located between the inlet of the diversion pipe and the outlet of the diversion pipe; The piston body and the particle filtering device are located outside the cleaning pipeline; the second on-off sliding sleeve abuts against the limit protrusion, and the inlet of the cleaning pipeline is located between the second front sealing ring and the second rear sealing ring.

As shown in Figure 1, the sedimentation tank is connected with the aeration tank. The pumping pipe, the first drain pipe and the second drain pipe are flexible pipes. One end of the pumping pipe 3c1 is connected with the aeration tank, and the other end is connected with the water inlet of the water pump 1 . The water inlet port of the first drain pipe 3c2 is in communication with the water outlet of the water pump 1 , specifically, the water inlet port of the first drain pipe is in sealing connection with the cleaning pipe outlet 32 . The outlet port of the first drainage pipe is connected with the oxygenation pool 4c. A flow meter 33 is arranged between the water inlet port of the first drain pipe and the outlet of the cleaning pipe. One port of the second drainage pipe 3c3 is in sealing connection with the diversion pipe outlet 2b, and the other port of the second drainage pipe is connected with the aeration tank 2c.

The specific working process of the aeration filtration treatment device of the aquaculture wastewater of the present invention is as follows:

First, the aquaculture wastewater in the artificial aquaculture pond enters the sedimentation tank and flows through the tortuous water flow channel separated by the partition wall. During this process, the particulate matter in the aquaculture wastewater undergoes preliminary precipitation;

Second, the aquaculture wastewater flows into the aeration tank and is aerated through the aeration device;

Third, the particulate matter in the aerated aquaculture wastewater is further filtered through mechanical filtration equipment, and the filtered water is discharged into the aeration tank. The specific working process of the mechanical filtration equipment is as follows:

A: As shown in Figure 2 and Figure 3, the sliding seat is driven to move along the first guide rail to the direction of the first limit stop by the first pushing actuator, and the driving impeller is driven by the first shaft rod, and the first on-off sliding sleeve , the piston body and the particle filtering device move together with the sliding seat.

When the sliding seat abuts against the first limit block: the inlet of the diversion pipe is located between the first front sealing ring and the first rear sealing ring; the piston body is located in the cleaning pipe, and the end of the ejector rod is against the piston On the end face of the body, the push rod pushes the second on-off sliding sleeve to move to the closed end of the cleaning pipe, so that the second on-off sliding sleeve is located between the cleaning pipe inlet and the cleaning pipe outlet, and at the same time, each spacer moves to the second on-off sliding sleeve Inside; at this time, the inlet of the diversion pipe is closed, and the inlet of the cleaning pipe is connected.

On the other hand, since the rotating shaft 76 is perpendicular to the second connecting shaft, when the brush rod enters the second on-off sliding sleeve, the stop lever can rotate around the rotating shaft without contact with the second on-off sliding sleeve. Interference occurs and cannot enter the second on-off sliding sleeve.

B: Turn on the water pump, pump the aquaculture wastewater in the aeration tank into the pumping pipe, and then flow through the water pump, the water inlet pipe, clean the pipe inlet, clean the pipe, clean the pipe outlet, and discharge it into the aeration tank through the first drain pipe .

When the water flows through the cleaning pipeline, the suspended garbage in the water flow will be filtered by each filter layer of the particle filter device, thereby realizing the cleaning of the suspended garbage in the water body. During this process, the flow meter is used to measure the water flow in the outlet of the cleaning pipe. When the flow measured by the flow meter is less than the set value, it means that there is too much garbage accumulated on the filter layer, resulting in a blockage of water flow: the water pump is turned off at this time , and at the same time, the first pushing actuator drives the sliding seat to move along the first guide rail until the sliding seat abuts against the second limit block.

As shown in Figure 5 and Figure 6, when the sliding seat abuts against the second limit stopper: the first on-off sliding sleeve is located between the inlet of the diversion pipe and the outlet of the diversion pipe, and the piston body and the particle filtering device are located Clean the outside of the pipe; the second on-off sliding sleeve moves toward the limit bump under the action of the compression spring, and leans against the limit bump, and the inlet of the clean pipe is located between the second front seal ring and the second rear seal ring Time; at this time, the diversion pipe inlet is open, and the cleaning pipe inlet is closed.

C: Turn on the water pump, and at the same time, the cleaning nozzle of the self-cleaning device sprays water towards each filter layer; at this time, the water pumped by the water pump will flow from the water inlet pipe to the inlet of the diversion pipe, the diversion pipe, and the outlet of the diversion pipe. And flow back into the aeration tank through the second drain pipe; in this process, the water flow will drive the driving impeller to rotate, and then drive the first shaft and each filter layer to rotate together.

During the rotation of the first shaft, the brush rod and the bristles will rotate with the first shaft because the bristles are against the filter layer, and the stop bar will be straightened under the action of centrifugal force during the rotation of the brush rod ( brush lever and stop lever on the same straight line), as shown in Figure 4 and Figure 6, thereafter, during the rotation of the brush lever, the stop lever 75 will abut against the limit lever 71, and at the same time due to the rotating shaft 76 and the first The two connecting shafts are perpendicular (that is, the rotating shaft 76 is perpendicular to the limit gear lever), so when the stop gear lever abuts against the limit gear lever, the brush rod and the bristles are limited and no longer rotate. Simultaneously, since the limit gear rod is provided with a magnet, the stop gear rod is an iron rod; and the outer cover of the limit gear rod is provided with a rubber sleeve; During the rotation process, the rubber sleeve can effectively prevent the stop gear lever from rotating around the rotating shaft.

When the brush bar and the bristles are limited and no longer rotate, the first shaft continues to drive the filter layers to rotate together, and the bristles will cooperate with the cleaning nozzle to remove the particles on the filter layers.

Then, the water pump is closed, and the cleaning nozzle of the self-cleaning device is closed.

D: Return to step A to continue the action, so as to effectively further filter the particulate matter in the aerated aquaculture wastewater, and can effectively solve the problem that the filter layer is easy to block during the filtration process of suspended solid particles, causing the filter layer to fail. The problems of reduced filtering efficiency and reduced filtering effect; and the mechanical filtering device of the present invention is easy to operate, has high equipment utilization rate and good filtering effect.

Fourth, the water body in the oxygenation pool is oxygenated through the aeration machine; then the water body is returned to the artificial breeding pool.

Claims (10)

1. an aeration filtration treatment device for aquaculture waste water, it is characterized in that, comprises settling tank, aeration tank, mechanical filter equipment and aeration tank, described settling tank is connected with aeration tank, and described mechanical filter equipment It includes a suction pipe, a water pump and a first drainage pipe. One end of the suction pipe is connected to the aeration tank, the other end is connected to the water inlet of the water pump, and the water inlet port of the first drainage pipe is connected to the water outlet of the water pump. , the outlet port of the first drainage pipe is connected with the aeration pool. 2. The aeration and filtration treatment device for aquaculture wastewater according to claim 1, characterized in that, in the sedimentation tank, several partition walls are set to separate the sedimentation tank into tortuous water flow channels, and the bottom of the aeration tank is provided with Aeration device. 3. The aeration and filtration treatment device of aquaculture wastewater according to claim 1, wherein the mechanical filtration equipment also includes a frame, a diversion pipe and a cleaning pipe coaxially arranged on the frame, coaxial The first shaft arranged in the guide pipe, the first guide rail arranged on the frame and parallel to the first shaft, the slide seat that can slide along the first guide rail, and the first push of the mobile slide seat device, the first on-off sliding sleeve slidably arranged in the diversion pipe, the piston body slidably arranged in the cleaning pipe, the second on-off sliding sleeve and the particle filtering device; The two ends of the diversion pipe are closed, and the diversion pipe is provided with a diversion pipe inlet and a diversion pipe outlet; one end of the cleaning pipe is open, and the other end is closed, and the opening end of the cleaning pipe is close to the diversion pipe, and the cleaning pipe There is a cleaning pipe inlet and a cleaning pipe outlet; the diversion pipe inlet and the cleaning pipe inlet are respectively connected to the water outlet of the water pump through the water inlet pipe; the water inlet port of the first drain pipe is sealed and connected to the cleaning pipe outlet ; Both ends of the first shaft run through the diversion pipe, one end of the first shaft is rotatably connected to the sliding seat through a bearing or a bearing seat, and the other end is connected to the piston body. On the first shaft, A drive impeller is located in the guide pipe, the first on-off sliding sleeve is connected to the first shaft through a first connecting rod, and a first front sealing ring and a first rear sealing ring are arranged on the outer surface of the first on-off sliding sleeve. sealing ring; The inner wall of the cleaning pipeline is provided with a limiting protrusion, the piston body and the opening end of the cleaning pipeline are located on the same side of the limiting protrusion, and the inlet of the cleaning pipeline, the second on-off sliding sleeve and the closed end of the cleaning pipeline are all Located on the same side of the limiting protrusion, a compression spring is provided between the second on-off sliding sleeve and the closed end of the cleaning pipeline to make the second on-off sliding sleeve lean against the limiting protrusion, close to the piston body The end surface of the second on-off sliding sleeve is provided with an axially extending ejector rod, and the outer surface of the second on-off sliding sleeve is provided with a second front sealing ring and a second rear sealing ring; The particle filtering device includes a plurality of spacers slidably arranged in the second on-off sliding sleeve, a filter layer arranged in each spacer and a second connection shaft connected to the piston body, the second connection The shaft rod is coaxial with the first shaft rod, and the second connecting shaft rod and the first shaft rod are located on opposite sides of the piston body, the second connecting shaft rod passes through each filter layer, and each spacer is connected to the second shaft rod through the connecting piece. The connecting shaft is connected. 4. The aeration and filtration treatment device for aquaculture wastewater according to claim 2, characterized in that, the first guide rail is provided with a first limit stopper and a second limit stopper, and the first limit stopper The block and the second limit block are located on opposite sides of the slide seat; When the sliding seat moves along the first guide rail and abuts against the first limit stopper: the inlet of the diversion pipe is located between the first front sealing ring and the first rear sealing ring, and the piston body is located between the cleaning pipe inside, and the end of the ejector rod abuts against the end face of the piston body, the second on-off sliding sleeve is located between the cleaning pipeline inlet and the cleaning pipeline outlet, and each spacer is located in the second on-off sliding sleeve; When the sliding seat moves along the first guide rail and abuts against the second limit block: the first on-off sliding sleeve is located between the inlet of the diversion pipe and the outlet of the diversion pipe, and the piston body and the particle filter The device is located outside the cleaning pipeline, the second on-off sliding sleeve abuts against the limit projection, and the inlet of the cleaning pipeline is located between the second front sealing ring and the second rear sealing ring. 5. The aeration and filtration treatment device for aquaculture wastewater according to claim 3, wherein the mechanical filtration equipment also includes a self-cleaning device, and the self-cleaning device includes a self-cleaning device arranged between the diversion pipeline and the cleaning pipeline. Limiting levers, a number of first shaft sleeves rotatably arranged on the second connecting shaft rod, brush rods arranged on each first shaft sleeve and self-adaptive stop structures arranged at the ends of each brush rod, each second A shaft sleeve is equidistantly distributed, and a filter layer is provided between two adjacent first shaft sleeves, the brush rod extends radially along the second connecting shaft rod, and the outer surface of the brush rod is provided with have a number of bristles; The limit gear rod is parallel to the first shaft, and the distance between the limit gear rod and the axis of the first shaft is greater than the radius of the outer peripheral surface of the spacer, The self-adaptive stop structure includes a stop bar rotatably arranged at the end of the brush bar through a rotating shaft, and the rotating shaft is perpendicular to the second connecting shaft. 6. The aeration and filtration treatment device for aquaculture wastewater according to claim 5, wherein a magnet is arranged inside the limit gear lever, and a rubber sleeve is provided on the outer cover of the limit gear lever; the stop gear The rods are irons. 7. The aeration and filtration treatment device for aquaculture wastewater according to claim 5 or 6, characterized in that, the self-cleaning device includes several self-cleaning devices that are arranged on the frame and are positioned between the diversion pipeline and the cleaning pipeline. Clean the nozzle, the cleaning nozzle is located above the cleaning pipe, and the nozzle of the cleaning nozzle is facing downward. 8. The aeration and filtration treatment device for aquaculture wastewater according to claim 3, characterized in that, the cleaning pipeline is coaxially provided with a limit rod, and the limit rod is located between the second on-off sliding sleeve and the cleaning pipeline. Between the closed ends, one end of the limit rod extends into the second on-off sliding sleeve, and the limit rod and the second on-off sliding sleeve are connected by a second connecting rod; When the sliding seat moves along the first guide rail and abuts against the first limit block: the distance between the limit rod and the closed end of the cleaning pipeline is smaller than that between the outlet of the cleaning pipeline and the second on-off sliding sleeve Pitch. 9. The aeration and filtration treatment device for aquaculture wastewater according to claim 3, characterized in that, the first shaft in the first on-off sliding sleeve is covered with a second shaft sleeve, and the second shaft The sleeve and the first shaft rod are connected by a bearing, and the first connecting rod is located between the first on-off sliding sleeve and the second shaft sleeve, and connects the first on-off sliding sleeve and the second shaft sleeve. 10 . The aeration and filtration treatment device for aquaculture wastewater according to claim 3 , wherein a flow meter is arranged between the water inlet port of the first drain pipe and the outlet of the cleaning pipe. 11 .