Water body rotational flow filtering impurity removal self-cleaning equipment

Abstract

The utility model discloses a water body rotational flow filtration impurity removal self-cleaning device, which belongs to the technical field of industrial fish culture circulating water treatment and comprises a rotational flow separation tank, an overflow port is arranged at the top end of the rotational flow separation tank, and a filter tank for filtering sewage is sleeved on the outer side of the rotational flow separation tank. The interior of the filtering tank is divided into an overflow channel and a filtering layer through a water separation plate, a water outlet is formed in the side wall of any end of the filtering tank located above the filtering layer, the horizontal position of the overflow port is higher than the water outlet, and sewage flowing into the water storage cavity can upwards pass through the filtering layer and is discharged from the water outlet by setting liquid level difference under the action of water potential energy; a double filtering structure is adopted, and the problems that particulate matter impurities in sewage are suddenly increased, the cyclone separation tank cannot achieve an ideal precipitation effect, particles exist in the precipitated sewage, the subsequent sewage treatment effect is affected, and the water quality becomes poor can be solved.

Description

Technical fields:

[0001] This utility model belongs to the field of recirculating aquaculture technology for industrialized fish farming, and more specifically relates to a water vortex filtration and impurity removal self-cleaning equipment. Background technology:

[0002] Recirculating Aquaculture Systems (RAS) are a new, sustainable aquaculture model that integrates modern engineering, recirculating water treatment, high-density aquaculture, and intensive management. RAS features advanced equipment, a controllable environment, high stocking density, high yields, and mechanized or automated operation throughout the entire process. Management, harvesting, quality, and safety are easily controlled, and products can be sold in a balanced manner. With its excellent social, economic, and ecological benefits, RAS is internationally recognized as the future direction of modern aquaculture.

[0003] Fish excrement and uneaten feed increase the organic matter content of aquaculture water. Excessive organic matter promotes the proliferation of organic matter-digesting bacteria, which compete with ammonia-converting bacteria for growth space, dissolved oxygen, and nutrients within the biofilm. Organic matter-digesting bacteria reproduce much faster than ammonia-converting bacteria. Nitrifying bacteria (autotrophic bacteria) struggle to compete with heterotrophic bacteria, resulting in slower nitrifying bacterial growth and lower ammonia removal rates in the aquaculture system's biological filter.

[0004] The wastewater discharged from aquaculture ponds contains a large amount of uneaten feed, feces, and other large particulate matter, which needs to be removed as much as possible in the initial water treatment unit to reduce the organic load on subsequent water treatment units. As the first water treatment unit in the entire system, the solid-liquid separator not only removes uneaten feed, feces, and other large particulate matter to prevent blockages and corrosion of pipelines in subsequent treatment units, but also reduces local head loss in the pipelines, saving system energy. Therefore, this unit is crucial to the removal efficiency of excrement and feed residue in the entire system.

[0005] Currently, in most RAS systems, the primary unit stage typically uses a vertical flow settler, which has a volume of approximately 500L and a surface area of ​​0.45m². 2 Since this system is used in circulating water treatment, based on a 700 cubic meter aquaculture water body, the daily circulating water volume is as high as 12,000 to 16,000 cubic meters, which is far from meeting the sedimentation time of 1 to 1.5 hours. Therefore, the sedimentation efficiency cannot be guaranteed.

[0006] The national utility model patent with patent number 202221668284.8 discloses a hydrocyclone separator for aquaculture wastewater, which effectively solves the problem of poor solid-liquid separation in wastewater. However, pollutants are easily left in the filter screen, causing the filter screen to become clogged, the wastewater flow rate to slow down, and thus affecting the wastewater filtration effect and leading to a deterioration in water quality. Utility model content:

[0007] To solve the above problems and overcome the shortcomings of the existing technology, this utility model provides a water cyclone filtration and impurity removal self-cleaning equipment;

[0008] The first technical problem to be solved was that the sedimentation efficiency could not be guaranteed.

[0009] The second technical problem to be solved was the impact on the effectiveness of wastewater filtration, which led to a deterioration in water quality.

[0010] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows: the water cyclone filtration and impurity removal self-cleaning equipment includes a cyclone separator, the side wall of the cyclone separator is provided with a water inlet pipe along the tangential direction, and a first sediment discharge port is provided below the cyclone separator.

[0011] The cyclone separator is fitted with a filter tank for filtering sewage on the outside. The cyclone separator is located inside the filter tank. The filter tank has an inlet on its side wall that is connected to the inlet pipe. The top of the cyclone separator has an overflow outlet.

[0012] The filter tank is also equipped with a baffle plate inside. The baffle plate and the cyclone separator tank enclose an overflow channel that communicates with the overflow outlet. A filter layer is filled between the baffle plate and the inner wall of the filter tank. The cyclone separator tank and the filter tank located below the filter layer enclose a water storage cavity that communicates with the overflow channel. An outlet is opened on the side wall of either end of the filter tank located above the filter layer.

[0013] Furthermore, the horizontal position of the overflow outlet is higher than that of the outlet.

[0014] Furthermore, a serrated drainage weir is fixedly installed around the overflow outlet on the upper end face of the cyclone separator.

[0015] Furthermore, the top of the baffle plate is higher than or equal to the top position of the sawtooth drainage weir.

[0016] Furthermore, the top of the baffle plate is connected to the inner wall of the top of the filter tank.

[0017] Furthermore, a second sludge discharge port is provided on the bottom wall of the filter tank located at the bottom of the water storage chamber. A one-way throttle valve is provided at the second sludge discharge port. Both the first sludge discharge port and the second sludge discharge port are connected to a solenoid valve by extending to the outside of the filter tank through a sludge discharge pipe.

[0018] Furthermore, a nozzle for backwashing the filter layer is provided above the filter layer.

[0019] The beneficial effects of the utility model are:

[0020] One advantage of this invention is that the cyclone separator is fitted with a filter tank for filtering sewage. The filter tank is divided into an overflow channel and a filter layer by a baffle plate. The dual filtration structure can solve the problem that if the particulate impurities in the sewage suddenly increase, the cyclone separator cannot achieve the ideal sedimentation effect, resulting in particulate matter still being present in the sewage after sedimentation, which affects the effect of subsequent sewage treatment and leads to a deterioration in water quality.

[0021] One advantage of this invention is that the overflow outlet is positioned higher than the outlet. By setting a liquid level difference, the sewage flowing into the storage chamber will rise through the filter layer under the action of water potential energy and be discharged from the outlet. This achieves the filtration of fine particles in the sewage without power, ensuring the filtration effect, and without the need for an additional power source, thus reducing energy consumption. Attached image description:

[0022] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Appendix Figure 2 This is a schematic diagram of another embodiment of the present invention; in the accompanying drawings:

[0024] 1. Cyclone separator; 11. Inlet pipe; 12. Overflow outlet; 121. Serrated drainage weir; 13. First sediment discharge outlet; 2. Filter tank; 21. Water baffle; 22. Overflow channel; 23. Filter layer; 24. Water storage chamber; 25. Outlet; 26. Second sediment discharge outlet; 261. One-way throttle valve; 3. Nozzle; 4. Solenoid valve. Detailed implementation method:

[0025] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "rear," "lower left," "upper right," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] The specific embodiment of this utility model: The water cyclone filtration and impurity removal self-cleaning equipment includes a cyclone separator 1, which is a cylindrical structure. The side wall of the cyclone separator 1 is provided with a water inlet pipe 11 along the tangential direction. With the help of the inlet water flow velocity, a cyclone state is formed in the cyclone separator 1. Under the action of centrifugal force, the heavier particles in the sewage quickly settle to the bottom of the cyclone separator 1. A funnel-shaped sedimentation tank is provided below the cyclone separator 1. The bottom end of the sedimentation tank is provided with a first sediment discharge port 13. The funnel shape facilitates the sliding of sediment to the first sediment discharge port 13.

[0027] As a preferred embodiment of this utility model

[0028] The cyclone separator 1 is fitted with a filter tank 2 for filtering sewage. The cyclone separator 1 is fixedly installed inside the filter tank 2. The side wall of the filter tank 2 is provided with an inlet that communicates with the inlet pipe 11. The top of the cyclone separator 1 is provided with an overflow port 12, located on the upper end face of the cyclone separator 1. A sawtooth drainage weir 121 is fixedly installed around the overflow port 12 to control the flow rate of sewage and prevent excessive flow. The sawtooth drainage weir 121 is purchased from the market and is existing technology. It is not included in the protection scope of this utility model and will not be described in detail here.

[0029] A baffle plate 21 is fixedly installed inside the filter tank 2. The baffle plate 21 surrounds the cyclone separator 1. The baffle plate 21 can be fixed by welding the outer wall of the baffle plate 21 to the inner wall of the filter tank 2 with several fixing columns. An overflow channel 22 communicating with the overflow outlet 12 is enclosed between the baffle plate 21 and the cyclone separator 1. Preferably, the top of the baffle plate 21 is higher than or equal to the top of the sawtooth drainage weir 121 to prevent sewage from flowing directly out of the outlet 25 and affecting the filtration effect.

[0030] The space between the baffle plate 21 and the inner wall of the filter tank 2 is filled with a filter layer 23 for filtering fine particles in sewage. Preferably, the filter layer 23 is made of polyurethane filter cotton. Below the filter layer 23, the cyclone separator 1 and the filter tank 2 enclose a water storage cavity 24 that communicates with the overflow channel 22. Above the filter layer 23, an outlet 25 is provided on the side wall of either end of the filter tank 2. The horizontal position of the overflow outlet 12 is higher than that of the outlet 25. By setting a liquid level difference, under the action of water potential energy, the sewage flowing into the water storage cavity 24 will pass upward through the filter layer 23 and be discharged from the outlet 25. This achieves the filtration of fine particles in sewage without power, ensuring the filtration effect, and without the need for an additional power source, thus reducing energy consumption.

[0031] To prevent wastewater from being discharged directly from the outlet 25 without passing through the filter layer 23, the wastewater inlet flow rate is manually adjusted to control the residence time of the wastewater in the cyclone separator 1 to about 1 minute.

[0032] This dual filtration structure uses a cyclone separator 1 to cause particulate matter in the wastewater to settle into the sedimentation tank at the bottom of the separator 1 under centrifugal force. The supernatant overflows to the filter tank 2, where the filter layer 23 intercepts and filters small suspended particulate matter in the wastewater, ensuring the wastewater treatment effect. The wastewater is also discharged through hydraulic potential energy, achieving non-powered drainage. This also solves the problem of a sudden increase in particulate impurities in the wastewater, which prevents the cyclone separator 1 from achieving the ideal sedimentation effect, resulting in particulate matter still remaining in the settled wastewater, affecting the subsequent wastewater treatment effect and causing water quality deterioration.

[0033] As another embodiment, the baffle plate 21 can also be configured such that the top of the baffle plate 21 is connected to the inner wall of the top of the filter tank 2. With this design, the sewage flowing into the water storage chamber 24 passes through the filter layer 23 under the action of water potential energy and water pressure, and is discharged from the outlet 25. Furthermore, there is no need to adjust the sewage inflow rate and sewage retention time, thus improving the treatment efficiency.

[0034] Preferably, a nozzle 3 is provided above the filter layer 23 for spraying and rinsing the filter layer 23, which is used to backwash the fine particles in the filter layer 23 and increase the service life of the filter layer 23. The nozzle 3 is connected to a water source and a drive source outside the device through a spray pipe. The nozzle 3 can be purchased from the market, and its structure and working principle are existing technologies and are not included in the protection scope of this utility model. Therefore, they will not be described in detail here.

[0035] A second sediment discharge port 26 is provided on the bottom wall of the filter tank 2 located at the bottom of the water storage chamber 24 for discharging sediment in the water storage chamber 24 and particulate matter washed down from the filter layer 23; a one-way throttle valve 261 is provided at the second sediment discharge port 26, and both the first sediment discharge port 13 and the second sediment discharge port 26 are connected to a solenoid valve 4 by extending to the outside of the filter tank 2 through a sludge discharge pipe. The sediment is periodically discharged by manually controlling the one-way throttle valve 261 and the solenoid valve 4.

[0036] It should be noted that this utility model is a water cyclone filtration and self-cleaning device for removing impurities. In specific operation...

[0037] According to the appendix Figure 1As shown, wastewater flows from the inlet tank into the cyclone separator 1. The flow rate of the inlet water creates a swirling state within the cyclone separator 1. Under the action of centrifugal force, heavier particles in the wastewater settle into the sedimentation tank at the bottom of the cyclone separator 1. The supernatant overflows into the filter tank 2, where it passes through the filter layer 23 to intercept and filter small suspended particles in the wastewater. The supernatant flows from the overflow outlet through the sawtooth drainage weir 121, into the overflow channel 22 and the water storage chamber 24. Under the action of water potential energy, the liquid flowing into the water storage chamber 24 rises through the filter layer 23 and is discharged from the outlet 25. The filter layer 23 intercepts and filters small suspended particles in the wastewater, ensuring effective filtration through dual filtration.

[0038] According to the appendix Figure 2 As shown, in another embodiment of the present invention, the top of the baffle plate 21 is connected to the inner wall of the top of the filter tank 2. The supernatant flows from the overflow port through the sawtooth drainage weir 121 into the overflow channel 22 and the water storage chamber 24. Under the action of water potential energy and water pressure, the sewage flowing into the water storage chamber 24 passes through the filter layer 23 and is discharged from the outlet 25.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A water cyclone filtration and impurity removal self-cleaning device, comprising a cyclone separator (1), wherein the side wall of the cyclone separator (1) is provided with a water inlet pipe (11) along the tangential direction, and a first sludge discharge port (13) is provided below the cyclone separator (1); Its features are: The cyclone separator (1) is fitted with a filter tank (2) for filtering sewage. The cyclone separator (1) is located inside the filter tank (2). The side wall of the filter tank (2) is provided with an inlet that communicates with the inlet pipe (11). The top of the cyclone separator (1) is provided with an overflow port (12). The filter tank (2) is also provided with a baffle plate (21). The baffle plate (21) and the cyclone separator (1) enclose an overflow channel (22) that communicates with the overflow port (12). The baffle plate (21) and the inner wall of the filter tank (2) are filled with a filter layer (23). The cyclone separator (1) and the filter tank (2) located below the filter layer (23) enclose a water storage cavity (24) that communicates with the overflow channel (22). An outlet (25) is opened on the side wall of any end of the filter tank (2) located above the filter layer (23).

2. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 1, characterized in that... The overflow outlet (12) is positioned horizontally higher than the outlet (25).

3. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 1, characterized in that... A sawtooth drainage weir (121) is fixedly installed around the overflow port (12) on the upper end face of the cyclone separator (1).

4. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 1, characterized in that... The top of the baffle plate (21) is higher than or equal to the top of the sawtooth drainage weir (121).

5. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 4, characterized in that... The top of the baffle plate (21) is connected to the inner wall of the top of the filter tank (2).

6. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 1, characterized in that... The bottom wall of the filter tank (2) located at the bottom of the water storage chamber (24) is provided with a second sludge discharge port (26), and a one-way throttle valve (261) is provided at the second sludge discharge port (26). The first sludge discharge port (13) and the second sludge discharge port (26) are both connected to a solenoid valve (4) by extending to the outside of the filter tank (2) through a sludge discharge pipe.

7. The water cyclone filtration and impurity removal self-cleaning equipment according to claim 1, characterized in that... A nozzle (3) for backwashing the filter layer (23) is provided above the filter layer (23).

Images