CN221051644U - Multistage layered microfiltration equipment - Google Patents

Abstract

The multistage layered micro-filtration equipment guarantees the flow direction of circulating water flow to be unchanged on the basis of realizing multistage filtration, thereby achieving the design purpose of improving the filtration efficiency and the back flushing cleaning efficiency. The multistage layered microfiltration equipment comprises a tank body, a rotating shaft, a plurality of groups of microfiltration components and a backwash component of a sewage disposal tank component, wherein the backwash component comprises a backwash arm fixedly connected with the tank body, a main backwash pipe is connected to the backwash arm in an extending manner, the main backwash pipe is respectively communicated with backwash pipes and backwash inclined pipes with the same groups of numbers as the microfiltration component, each group of backwash pipes is connected with a group of liquid level sensors and a group of backwash water pumps, and each group of backwash inclined pipes is arranged above the back surface of the microfiltration component.

Description

Multistage layered microfiltration equipment

Technical Field

The utility model relates to multistage layered microfiltration equipment for aquaculture, and belongs to the technical field of aquaculture.

Background

At present, the existing running water culture and circulating water culture technologies are widely popularized and used in the aquaculture industry, and based on culture containers and feed feeding and water treatment equipment in specific spaces, the environment of culture water bodies can be correspondingly improved, the culture density of the water bodies can be improved, and finally higher growth speed and yield can be obtained.

The filtering equipment as a necessary technical link is used for filtering out dirt such as fish manure in water, so as to ensure that the cleanliness of the water meets the cultivation requirement. Taking 1000 cubes of water body filtration as an example, the circulation rate is about 24 times/day, the cultivation density is 30kg/m ³, the daily water exchange amount is 15-20%, the feeding amount is 1-2%, and the corresponding water temperature is about 16-18 ℃. In the circulating water body, the particles with the particle size of more than 60um account for 11% -27% of the total particles, the particles with the particle size of 15-60um account for 33% -40% of the total particles, and the particles with the particle size of less than 15um account for 33% -56% of the total particles. In this regard, the water filtration devices of the prior art generally use filter membranes with different apertures, the total removal effect on the total particulate matters is 10% -33.3%, the average removal effect is only 19.67%, the removal effect is poor, and the design and use requirements are difficult to meet.

At present, a straight-tube type filtering mechanism is generally adopted by the microfiltration equipment, water can seep from the tube wall of the straight-tube type filtering mechanism in the filtering process, namely, the seeping direction of the water is right angle with the tube wall and cannot seep along the water flow direction, so that multistage filtering is difficult to carry out. In addition, the conventional 60um filter membrane has the disadvantages of too simple filtering mode and low efficiency. When the water filter is used for a period of time, back flushing is needed to be carried out for cleaning, and in the back flushing process, the rotary drum rotates and high-pressure back flushing causes that larger particles in the water body are destroyed and torn into particles with smaller particle sizes, so that the amount of the small particles in the water body is increased, and the filtering effect cannot be achieved.

In view of this, the present patent application is specifically filed.

Disclosure of utility model

The multistage layered micro-filtration device provided by the utility model aims to solve the problems in the prior art, and provides a novel multistage layered micro-filtration structure so as to ensure that the flow direction of circulating water flow is unchanged on the basis of realizing multistage filtration, thereby achieving the design purpose of improving the filtration efficiency and the back flushing cleaning efficiency.

To achieve the above design objective, the multi-stage layered micro-filtration device includes:

The groove body is used for accommodating the micro-filtration component and guiding the circulating water to enter and exit, and the side part of the groove body is communicated with the water inlet pipe and the water outlet pipe;

The rotating shaft is axially arranged in the groove body along the water flow direction; the rotating shaft is driven by the gear motor to reciprocally rotate around the axial center of the rotating shaft;

the array micro-filtration components are radially sleeved and fixed on the rotating shaft; the micro-filtration components are arranged in parallel along the axial direction of the rotating shaft, and the direction of the micro-filtration components driven by the rotating shaft to rotate is perpendicular to the water flow direction in the tank body;

The sewage draining groove component is fixedly connected with the groove body and is positioned under the vertical direction of the micro-filtration component; the sewage draining tank assembly is provided with a waste separating tank, a hopper tank and a group of main waste tanks, wherein the waste separating tank and the hopper tank are the same in number as the microfiltration assembly and are communicated with each other;

The back flushing assembly is used for spraying and flushing clear water on the back surface of the micro-filtration assembly; the back flushing assembly comprises a back flushing arm fixedly connected with the tank body, a main back flushing pipe is connected to the back flushing arm in an extending mode, the main back flushing pipe is respectively communicated with back flushing pipes and back flushing inclined pipes with the same groups as the micro-filtration assembly, each group of back flushing pipes is connected with a group of liquid level sensors and a group of back flushing water pumps, and each group of back flushing inclined pipes is arranged above the back of the micro-filtration assembly.

Further, two ends of the rotating shaft are sleeved on the side wall of the groove body through shaft sleeves, a driving gear is fixedly sleeved on an output shaft of the speed reducing motor, a driven gear is fixedly sleeved on the rotating shaft, and the driving gear is meshed with the driven gear; the rotating shaft and the array of micro-filtration components synchronously rotate under the drive of the speed reducing motor;

Further, the two sides of the tank body are symmetrically provided with a plurality of groups of slots, and each group of waste liquid tanks are embedded and connected with one group of slots; the liquid level of the waste liquid separating tank is higher than that of the main waste liquid tank, the liquid level of the funnel tank is higher than that of the waste liquid separating tank, waste liquid flows into the funnel tank through the micro-filtration assembly, is gathered to the main waste liquid tank through the waste liquid separating tank, and finally flows out of the tank body from the main waste liquid tank.

Further, one end of each group of recoil inclined pipes is respectively communicated with the main recoil pipe, and the other end of each group of recoil inclined pipes is respectively communicated with a plurality of spray heads; water sprayed from the spray head is sprayed to the back of the microfiltration assembly for back flushing.

Further, the micro-filtration assembly is provided with a conical funnel structure, the closing end of the funnel structure is fixedly connected with the rotating shaft, the outer side edge of the flaring end of the funnel structure is connected with a sealing ring in a closed loop manner, and the side wall of the conical funnel structure is of a hollow structure and is provided with a plurality of filtering membranes.

Further, the bottom of the groove body is of a semicircular groove structure, the sealing ring is provided with a plurality of layers of lip-shaped elastic parts, and the lip-shaped elastic parts are tightly contacted with the semicircular groove at the bottom of the groove body.

Further, the pore diameter of the filtering membrane of each group of micro-filtration components is gradually reduced along the water flow direction inside the tank body.

In summary, the multistage layered microfiltration device has the following advantages:

1. The multistage layered micro-filtration structure provided by the application adopts the conical filter drum, the aperture of the water inlet is larger than that of the water outlet, and the circulating water flow can seep out along the lower part of the water level line of the conical filter drum, so that the direction of the water flow is unchanged, a multistage layered filtration mode is realized, and the filtration efficiency is obviously improved.

2. Based on a multistage layered micro-filtration structure, the application can sequentially arrange a plurality of filtering membranes with different apertures, so that the arrangement of the filtering structure is more compact, and the filtering rate and index of water body in unit volume are correspondingly improved.

3. The multistage layered conical filter drum provided by the application can not cause that larger particles are crushed to increase the quantity of small particles in the water body in the back flushing process, so that a higher back flushing cleaning effect is achieved.

Drawings

The present application will now be further described with reference to the following drawings;

FIG. 1 is an isometric view of a multi-stage layered microfiltration apparatus of the application;

FIG. 2 is a schematic structural view of a trapway assembly;

FIG. 3 is an isometric view of the microfiltration device of FIG. 1 from another view;

FIG. 4 is a cross-sectional view of the structure shown in FIG. 1;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is an enlarged schematic view of portion A of FIG. 4;

Detailed Description

The utility model provides a multi-level layered micro-filtration device for circulating water culture, which is used for making the purposes, the technical scheme and the effects of the utility model clearer and more definite, and is further described in detail below. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.

Embodiment 1 as shown in fig. 1 to 6, the multistage layered microfiltration device mainly comprises:

A tank 10 for accommodating the micro-filtration assembly and guiding the circulating water in and out; the bottom of the tank body 10 is a semicircular groove structure; a water inlet pipe 11 and a water outlet pipe 12 are communicated with the side part of the tank body 10;

A rotation shaft 20 axially disposed inside the tank 10 in the water flow direction; the rotating shaft 20 is sleeved on the side wall of the groove body 10 through the shaft sleeve 16, and the rotating shaft 20 is driven by the gear motor 14 to rotate reciprocally around the axial center of the rotating shaft; the gear motor 14 is fixedly connected to the tank body 10 through the gear motor bracket 13, a driving gear 15 is fixedly sleeved on an output shaft of the gear motor 14, and correspondingly, a driven gear 21 is fixedly sleeved on the rotating shaft 20, and the driving gear 15 and the driven gear 21 are meshed with each other. The rotating shaft 20 and 3 groups of micro-filtration components synchronously rotate under the drive of the gear motor 14 through the transmission connection among the gears;

The 3 groups of micro-filtration components are radially sleeved and fixed on the rotating shaft 20; the micro-filtration components are arranged in parallel along the axial direction of the rotating shaft 20, and the direction of the micro-filtration components driven by the rotating shaft 20 to rotate is perpendicular to the water flow direction in the tank body 10;

A drain tank assembly 30 fixedly connected to the tank body 10 and located vertically below the microfiltration assembly; the blowdown tank assembly 30 has the same number of sets of waste liquid separating tanks 31 and hopper tanks 32 which are communicated with each other as the microfiltration assembly, and a set of main waste liquid tanks 33; 3 groups of slots 17 are symmetrically arranged on two sides of the tank body 10, and the waste liquid separating tank 31 is connected with the slots 17 in an embedded manner; the liquid level of the waste liquid separating tank 31 is slightly higher than that of the main waste liquid tank 33, the liquid level of the funnel tank 32 is higher than that of the waste liquid separating tank 31, waste liquid flows into the funnel tank 32 through the micro-filtration assembly, then is gathered to the main waste liquid tank 33 through the waste liquid separating tank 31, and finally flows out of the tank body 10 from the main waste liquid tank 33;

The 3 groups of back flushing assemblies are respectively and correspondingly arranged above each group of microfiltration assemblies and are used for spraying and flushing clear water on the back surfaces of the microfiltration assemblies; the back flushing assembly comprises a back flushing arm 40 fixedly connected with the tank body 10, a main back flushing pipe 49 is connected to the back flushing arm 40 in an extending manner, the main back flushing pipe 49 is respectively communicated with back flushing pipes and back flushing inclined pipes with the same group number as the micro-filtration assembly, and each group of back flushing inclined pipes is arranged above the back surface of the micro-filtration assembly; specifically, one ends of the first, second and third backwash pipes 41, 42 and 43 are respectively communicated with the main backwash pipe 49, and the other ends of the three are respectively connected with a group of liquid level sensors and a group of backwash pumps 44; the first liquid level sensor 61 is located at the bottom of the first backwash tube 41, the second liquid level sensor 62 is located at the bottom of the second backwash tube 42 and the third liquid level sensor 63 is located at the bottom of the third backwash tube 43, the water line being indicated by W in fig. 4; one end of the first backflushing inclined tube 46, one end of the second backflushing inclined tube 47 and one end of the third backflushing inclined tube 48 are respectively communicated with the main backflushing tube 49, and the other ends of the first backflushing inclined tube 46, the second backflushing inclined tube 47 and the third backflushing inclined tube are respectively communicated with a plurality of spray heads 45; based on the data detection results of 3 groups of liquid level sensors, when one group or a plurality of groups of backwash water pumps 44 are started, water in the tank body 10 enters a main backwash pipe 49 through a first backwash pipe 41, a second backwash pipe 42 and/or a third backwash pipe 43, and is sprayed out through a plurality of spray heads 45 on a first backwash inclined pipe 46, a second backwash inclined pipe 47 and/or a third backwash inclined pipe 48, and the sprayed water is sprayed to the back surface of the microfiltration assembly to be backwashed, so that larger particles adhered to the back surface of the microfiltration assembly are washed down, and the dropped particles are discharged out of the tank body 10 through a blowdown tank assembly 30;

Further, the micro-filtration assembly has a conical funnel structure, the closing end of the funnel structure is fixedly connected with the rotating shaft 20, the outer side edge of the flaring end of the funnel structure is connected with a sealing ring 50 in a closed loop manner, and the side wall of the conical funnel structure is of a hollow structure and is provided with a plurality of filtering membranes;

The sealing ring 50 is provided with a plurality of layers of lip-shaped elastic parts 54, and the lip-shaped elastic parts 54 are in tight contact with the semicircular grooves at the bottom of the groove body 10;

The aperture of the filtering membrane of each group of micro-filtration components is gradually reduced along the water flow direction in the tank body 10; as shown in the figure, the pore size of the filtering membrane of the first conical filtering rotary drum 51 is 50-60um, the pore size of the filtering membrane of the second conical filtering rotary drum 52 is 30-40um, and the pore size of the filtering membrane of the third conical filtering rotary drum 53 is 10-20 um;

By adopting the structural design of the multistage layered micro-filtration equipment, the circulating aquaculture water filtration method comprising the following steps of:

1) Filtering

The water of the cultured aquatic products is led into the tank body 10 through the water inlet pipe 11, then sequentially flows through 3 groups of micro-filtration components, and finally is discharged out of the tank body 10 along the water outlet pipe 12;

Particles having a diameter greater than 50-60um are trapped as they pass through the first conical filter drum 51 in the direction F1 in FIG. 4 (i.e., region J1 in FIG. 5); particles having a diameter greater than 30-40um are trapped while flowing along the second conical filter drum 52 in the F2 direction (i.e., J2 region); while passing through the third conical filter drum 53 in the direction F3 (i.e., region J3), particles having a diameter greater than 10-20um are retained;

The water filtered by the 3 groups of microfiltration components can meet the requirements of the culture water quality, and finally is discharged out of the tank body 10 along the water outlet pipe 12 to continue to enter the culture recycling process;

Specifically, in the above steps, when water flows through the 3 groups of micro-filtration components, the micro-filtration components can be driven by the rotating shaft 20 to rotate around the axial center of the micro-filtration components, and the rotation direction of the micro-filtration components is perpendicular to the water flow direction in the tank body 10;

further, the inside of the tank body 10 is axially sleeved with a rotating shaft 20 through shaft sleeves 16 at two ends, and the rotating shaft 20 is driven by a gear motor 14 to reciprocally rotate around the axial center thereof; the preferred driving mode is that a driving gear 15 is fixedly sleeved on the output shaft of the gear motor 14, a driven gear 21 is fixedly sleeved on the rotating shaft 20, and the driving gear 15 is meshed with the driven gear 21; the rotating shaft 20 and 3 groups of micro-filtration components synchronously rotate under the drive of the gear motor 14 through the transmission connection among the gears;

The 3 groups of micro-filtration components are radially sleeved and fixed on the rotating shaft 20, and the micro-filtration components are mutually arranged in parallel along the axial direction of the rotating shaft 20;

Each group of micro-filtration components is provided with a conical funnel structure, the closing end of the funnel structure is fixedly connected with the rotating shaft 20, the outer side edge of the flaring end of the funnel structure is connected with a sealing ring 50 in a closed loop manner, and the side wall of the conical funnel structure is of a hollow structure and is provided with a plurality of filtering membranes;

the bottom of the groove body 10 is provided with a semicircular groove structure, the sealing ring 50 is provided with a plurality of layers of lip-shaped elastic parts 54, and the lip-shaped elastic parts 54 are tightly contacted with the semicircular groove at the bottom of the groove body 10 to form a seal;

the aperture of the filtering membrane of each group of micro-filtration components is gradually reduced along the water flow direction in the tank body 10;

2) Back flushing

The liquid level sensor arranged at the bottom of each group of back flushing components detects the water level change of the area in real time;

When the liquid level sensor detects that the water level in the area exceeds the warning value, if the water level in the J1 area where the first liquid level sensor 61 is located, the J2 area where the second liquid level sensor 62 is located and/or the J3 area where the third liquid level sensor 63 is located abnormally rise, the micro-filtration assembly in the corresponding area is blocked by dirt to influence the normal passing of water flow, at this time, the backwash water pump 44 is started, water in the tank body 10 is ejected through the nozzle 45 of the backwash assembly, and the ejected water is sprayed to the back surface (namely the surface B in FIG. 4) of the micro-filtration assembly for backflushing; particulate matter washed from the microfiltration assembly is discharged from the tank body 10 through the blowdown tank assembly 30;

In the back flushing process, the micro-filtration assembly is driven by the rotating shaft 20 to rotate around the axial center of the micro-filtration assembly, and the rotation direction of the micro-filtration assembly is perpendicular to the water flow direction in the tank body 10.

Specifically, a group of blowdown tank assemblies 30 are arranged vertically below each group of microfiltration assemblies, each blowdown tank assembly 30 comprises a waste liquid separating tank 31, a funnel tank 32 and a main waste liquid tank 33, the liquid level of the waste liquid separating tank 31 is slightly higher than that of the main waste liquid tank 33, the liquid level of the funnel tank 32 is higher than that of the waste liquid separating tank 31, waste liquid flows into the funnel tank 32 through the microfiltration assemblies, is gathered to the main waste liquid tank 33 through the waste liquid separating tank 31, and finally flows out of the tank body 10 from the main waste liquid tank 33;

A group of back flushing assemblies are arranged vertically above each group of microfiltration assemblies, each back flushing assembly comprises a back flushing arm 40 fixedly connected with the tank body 10, a main back flushing pipe 49 is connected to the back flushing arm 40 in an extending mode, the main back flushing pipe 49 is respectively communicated with back flushing pipes and back flushing inclined pipes with the same group number as the microfiltration assemblies, each group of back flushing pipes is connected with a group of liquid level sensors and a group of back flushing pumps 44, each group of back flushing inclined pipes is arranged above the back surface of the microfiltration assemblies, and the end parts of the back flushing inclined pipes are communicated with a plurality of spray heads 45;

In summary, the embodiments presented in connection with the figures are only preferred solutions for achieving the object of the utility model. It will be apparent to those skilled in the art from this disclosure that other alternative constructions consistent with the design concept of the utility model may be directly derived. Other structural features thus obtained shall also fall within the scope of the solution according to the utility model.

Claims (7)

1. A multi-stage layered microfiltration device, characterized by: comprises a plurality of steps of the method, including the steps of,

The groove body is used for accommodating the micro-filtration component and guiding the circulating water to enter and exit, and the side part of the groove body is communicated with the water inlet pipe and the water outlet pipe;

The rotating shaft is axially arranged in the groove body along the water flow direction; the rotating shaft is driven by the gear motor to reciprocally rotate around the axial center of the rotating shaft;

the array micro-filtration components are radially sleeved and fixed on the rotating shaft; the micro-filtration components are arranged in parallel along the axial direction of the rotating shaft, and the direction of the micro-filtration components driven by the rotating shaft to rotate is perpendicular to the water flow direction in the tank body;

The sewage draining groove component is fixedly connected with the groove body and is positioned under the vertical direction of the micro-filtration component; the sewage draining tank assembly is provided with a waste separating tank, a hopper tank and a group of main waste tanks, wherein the waste separating tank and the hopper tank are the same in number as the microfiltration assembly and are communicated with each other;

The back flushing assembly is used for spraying and flushing clear water on the back surface of the micro-filtration assembly; the back flushing assembly comprises a back flushing arm fixedly connected with the tank body, a main back flushing pipe is connected to the back flushing arm in an extending mode, the main back flushing pipe is respectively communicated with back flushing pipes and back flushing inclined pipes with the same groups as the micro-filtration assembly, each group of back flushing pipes is connected with a group of liquid level sensors and a group of back flushing water pumps, and each group of back flushing inclined pipes is arranged above the back of the micro-filtration assembly.

2. The multi-stage layered microfiltration device of claim 1, wherein: the two ends of the rotating shaft are sleeved on the side wall of the groove body through shaft sleeves, a driving gear is fixedly sleeved on an output shaft of the speed reducing motor, a driven gear is fixedly sleeved on the rotating shaft, and the driving gear is meshed with the driven gear;

The rotating shaft and the plurality of groups of micro-filtration components synchronously rotate under the drive of the speed reducing motor.

3. The multi-stage layered microfiltration device of claim 1, wherein: the two sides of the tank body are symmetrically provided with a plurality of groups of slots, and each group of waste liquid tanks are connected with one group of slots in an embedded manner;

The liquid level of the waste liquid separating tank is higher than that of the main waste liquid tank, the liquid level of the funnel tank is higher than that of the waste liquid separating tank, waste liquid flows into the funnel tank through the micro-filtration assembly, is gathered to the main waste liquid tank through the waste liquid separating tank, and finally flows out of the tank body from the main waste liquid tank.

4. The multi-stage layered microfiltration device of claim 1, wherein: one end of each group of recoil inclined pipes is respectively communicated with the main recoil pipe, and the other end of each group of recoil inclined pipes is respectively communicated with a plurality of spray heads; water sprayed from the spray head is sprayed to the back of the microfiltration assembly for back flushing.

5. The multi-stage layered microfiltration device according to any one of claims 1 to 4 wherein: the micro-filtration assembly is provided with a conical funnel structure, the closing end of the funnel structure is fixedly connected with the rotating shaft, the outer side edge of the flaring end of the funnel structure is connected with a sealing ring in a closed loop manner, and the side wall of the conical funnel structure is of a hollow structure and is provided with a plurality of filtering membranes.

6. The multi-stage layered microfiltration device of claim 5 wherein: the bottom of the groove body is of a semicircular groove structure, the sealing ring is provided with a plurality of layers of lip-shaped elastic parts, and the lip-shaped elastic parts are tightly contacted with the semicircular groove at the bottom of the groove body.

7. The multi-stage layered microfiltration device of claim 6 wherein: along the water flow direction inside the tank body, the pore diameter of the filtering membrane of each group of micro-filtration components is gradually reduced.