Underwater filtering device

Abstract

The utility model discloses an underwater filtering device, and relates to the technical field of micro filters in front of a pump. The underwater filtering device comprises a filtering main body and an aeration cleaning mechanism, wherein the aeration cleaning mechanism is used for generating bubbles; the aeration cleaning mechanism comprises a bubble generator and a bubble outlet piece, the bubble generator is communicated with the bubble outlet piece, at least one bubble outlet hole is formed in the bubble outlet piece, and the bubble outlet piece is arranged on one side of the filtering main body and enables at least part of bubbles discharged by the bubble outlet hole to pass through the filtering main body so as to perform aeration cleaning on the filtering main body. According to the utility model, the cleaning mechanism of the underwater filtering device is improved, and the aeration self-cleaning type pre-pumping micro filter is designed, so that the self-cleaning effect is effectively improved, the efficient filtering capacity of the filter screen can be kept, and the maintenance period of the filter screen is shortened.

Description

Technical Field

[0001] This utility model relates to the field of pre-pump microfiltration technology, and in particular to an underwater filtration device. Background Technology

[0002] A pre-pump microfiltration unit is a filtration device installed before a pump. It is used to filter the raw water that needs to be filtered, and the filtered clean water is then pumped out by a water pump and provided to a water-saving irrigation system for drip irrigation.

[0003] In conventional pre-pump microfiltration machines, the filter screen is typically cleaned by continuously rinsing the filter cylinder with pressurized water jets to keep the filter screen clean at all times.

[0004] However, this water spray cleaning method is greatly affected by water resistance underwater. The water pressure of the sprayed water is significantly weakened before reaching the filter screen, resulting in a very poor cleaning effect. Utility Model Content

[0005] The main purpose of this invention is to provide an underwater filtration device that improves the self-cleaning effect of the underwater filtration device, enabling the filter screen to maintain high filtration efficiency and reducing the maintenance cycle of the filter screen.

[0006] To achieve the above objectives, this utility model proposes an underwater filtration device, comprising:

[0007] Filter body; and

[0008] An aeration and cleaning mechanism is used to generate bubbles; the aeration and cleaning mechanism includes a bubble generator and a bubble outlet, the bubble generator is connected to the bubble outlet, the bubble outlet is provided with at least one bubble outlet hole, the bubble outlet is located on one side of the filter body and the bubbles discharged from the bubble outlet hole pass at least partially through the filter body to aerate and clean the filter body.

[0009] Optionally, the filter body includes a support assembly and a filter element, the filter element being disposed on the support assembly and extending in a direction parallel to the horizontal plane.

[0010] Optionally, the filter element is rotatably mounted within the support assembly via a rotating shaft, and the rotating shaft has an internal air supply channel, the two ends of which are respectively connected to the output end of the bubble generator and the input end of the bubble outlet element.

[0011] Optionally, the bubble outlet and the filter element are arranged in parallel.

[0012] Optionally, the bubble outlet is located on the side of the bubble outlet relative to the filter element, the bubble outlet has a tubular structure and the bubble outlet on the bubble outlet is symmetrical about the rotation axis.

[0013] Optionally, the aeration and cleaning mechanism further includes a transition cavity disposed on the support assembly. The transition cavity is provided with a transition chamber for buffering gas. One end of the transition cavity is connected to the rotating shaft, and the other end of the transition cavity is connected to the bubble generator.

[0014] Optionally, the filter body further includes a water outlet pipe installed on the support assembly. The water outlet pipe has an inlet and an outlet. The inlet of the water outlet pipe is located on the lower side of the bubble outlet element, and the outlet of the water outlet pipe is adapted to be connected to a water pump.

[0015] Optionally, a flow equalization element is provided between the water inlet of the water outlet pipe and the bubble outlet element. The flow equalization element is used to prevent air bubbles from entering the water outlet pipe and to disperse the suction force of the water outlet pipe to prevent the water flow from forming a vortex.

[0016] Optionally, the flow equalization element is a circular plate structure and the diameter of the flow equalization element is larger than the inner diameter of the water outlet pipe.

[0017] Optionally, the distance between the working water level line of the filter body and the filter element is greater than 300mm.

[0018] In the technical solution of this utility model, the underwater filtration device includes a filter body and an aeration and cleaning mechanism. The aeration and cleaning mechanism is used to generate bubbles. The aeration and cleaning mechanism includes a bubble generator and a bubble outlet. The bubble generator is connected to the bubble outlet, which has at least one bubble outlet hole. The bubble outlet is located on one side of the filter body, and the bubbles discharged from the bubble outlet hole pass at least partially through the filter body to aerate and clean the filter body. It can be understood that this utility model proposes an aeration self-cleaning pre-pump microfiltration device, which effectively improves the self-cleaning effect, allows the filter screen to maintain high-efficiency filtration capacity, and reduces the maintenance cycle of the filter screen. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram illustrating the application of the underwater filtration device of this utility model;

[0021] Figure 2 This is a schematic diagram of the underwater filtration device of this utility model;

[0022] Figure 3 This is a schematic diagram of the underwater filtration device of this utility model.

[0023] Figure 4 This is a cross-sectional view of the underwater filtration device of this utility model;

[0024] Figure 5 This is a top view of the underwater filtration device of this utility model.

[0025] Explanation of icon numbers:

[0026] 10. Filter body; 20. Aeration and cleaning mechanism; 21. Bubble generator; 22. Bubble outlet; 22a. Bubble outlet hole; 11. Support assembly; 12. Filter element; 23. Rotating shaft; 24. Transition chamber; 31. Flow equalization element; 32. Water outlet pipe; 200. Water pump.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model proposes an underwater filtration device, particularly a pre-pump microfilter, but is not limited thereto.

[0033] Reference Figures 1 to 5 In one embodiment of the present invention, the underwater filtration device includes a filter body 10 and an aeration and cleaning mechanism 20. The aeration and cleaning mechanism 20 is used to generate bubbles. The aeration and cleaning mechanism 20 includes a bubble generator 21 and a bubble outlet 22. The bubble generator 21 is connected to the bubble outlet 22. The bubble outlet 22 is provided with at least one bubble outlet hole 22a. The bubble outlet 22 is located on one side of the filter body 10 and the bubbles discharged from the bubble outlet hole 22a pass through at least part of the filter body 10 to aeration and clean the filter body 10.

[0034] In this embodiment, the filter body 10 may include a support assembly 11 and a filter element 12 with a filter screen. The filter screen may be a planar structure or a cylindrical structure, which is not limited here. The filter element 12 may be fixedly installed in the support assembly 11, or it may be rotatably installed in the support assembly 11 via the hollow rotating shaft 23 shown in the figure. It may be rotated by air bubbles, or it may be driven by rotating blades to rotate the rotating shaft 23, or it may be driven by a drive motor, etc., which is not limited here.

[0035] In this embodiment, the aeration and cleaning mechanism 20 may include any device that can form bubbles, such as an aeration pump or a dedicated aerator, etc., which is not limited here.

[0036] The principle is that the impurities and silt filtered and intercepted by the filter screen are backwashed by the large flow of air bubbles output by the aeration and cleaning mechanism 20, thereby cleaning the filter screen.

[0037] It is understood that this utility model proposes an aeration self-cleaning pre-pump microfiltration device, which effectively improves the self-cleaning effect, enables the filter screen to maintain high-efficiency filtration capacity, and reduces the maintenance cycle of the filter screen.

[0038] To achieve efficient cleaning of the filter, refer to Figures 1 to 5 In one embodiment, the filter body 10 includes a support component 11 and a filter element 12. The filter element 12 is disposed on the support component 11 and extends in a direction parallel to the horizontal plane. The bubble outlet 22 is disposed parallel to the filter element 12.

[0039] Specifically, the filter element 12 can be a cylindrical shell with a filter screen on the top surface of the shell and a water outlet pipe 32 connected to the bottom of the shell. Raw water flows from the top through the filter screen into the shell, and impurities in the water, such as mud, sand, and algae, are intercepted on the surface of the filter screen.

[0040] Reference Figures 1 to 5 In one embodiment, the filter element 12 is rotatably mounted within the support assembly 11 via a rotating shaft 23. The rotating shaft 23 has an internal air supply channel, the two ends of which are connected to the output end of the bubble generator 21 and the input end of the bubble outlet element 22, respectively. Thus, by using the rotating shaft 23 as an aeration delivery pipe, the structural compactness of the underwater filtration device is improved, and the cost is reduced. Furthermore, the synchronous rotation of the bubble outlet element 22 and the filter element 12 is achieved, which is beneficial for improving the self-cleaning effect.

[0041] To further improve the cleaning effect of the aeration cleaning mechanism 20 on the filter body 10, refer to Figures 1 to 5 In one embodiment, the bubble outlet 22a may be formed on the side of the bubble outlet 22 opposite to the filter element 12. The bubble outlet 22 has a tubular structure and the bubble outlet 22a on the bubble outlet 22 is symmetrical about the rotation axis 23.

[0042] In this embodiment, a bubble outlet 22 is provided at the bottom of the rotating shaft 23. The bubble outlet 22 is divided into two bubble outlet tubes by the rotating shaft 23, and the bubble outlet holes 22a on the two bubble outlet tubes are symmetrically arranged. During the process of venting bubbles, the bubbles exert opposing forces to drive the bubble outlet tubes to rotate. The bubbles vented from the bubble outlet tubes rise rapidly and explode when they hit the filter screen, forming a turbulent water flow. The water flow oscillates and flows from the inside to the outside of the filter screen. This water flow has a strong flushing ability, which can wash away the mud and sand and other impurities that were originally intercepted on the filter screen, thus cleaning the filter screen and maintaining its high-efficiency filtration capacity.

[0043] Reference Figures 1 to 4 In one embodiment, the aeration and cleaning mechanism 20 may further include a transition cavity 24 disposed on the support assembly 11. The transition cavity 24 has a transition chamber for buffering gas. One end of the transition cavity 24 is connected to the rotating shaft 23, and the other end of the transition cavity 24 is connected to the bubble generator 21. This arrangement helps the bubble outlet 22 to continuously and stably discharge bubbles, further improving the stability of the aeration and cleaning process.

[0044] In this embodiment, an external aeration pump is connected to the transition chamber 24 on the frame of the underwater filter device via a pipeline. A large flow of air is input through the air source inlet. The airflow continues to be delivered to the bubble outlet 22 in the transition chamber 24, and then outputs from the bubble outlet 22a of the bubble outlet 22, forming a large number of bubbles in the cylinder. The bubbles rise to the filter screen to clean it.

[0045] To improve filtration efficiency and simultaneously deliver the filtered purified water to irrigation systems, etc., refer to Figures 1 to 4 In one embodiment, the filter body 10 further includes a water outlet pipe 32 installed on the support assembly 11. The water outlet pipe 32 is provided with an inlet and an outlet. The inlet of the water outlet pipe 32 is located on the lower side of the bubble outlet 22, and the outlet of the water outlet pipe 32 is adapted to be connected to the water pump 200.

[0046] Reference Figures 1 to 5 In one embodiment, a flow equalization element 31 is provided between the inlet of the water outlet pipe 32 and the bubble outlet element 22. The flow equalization element 31 is used to prevent air bubbles from entering the water outlet pipe 32 and to disperse the suction of the water outlet pipe 32 to prevent the water flow from forming a vortex. In this way, it can be ensured that the air bubbles rise to the filter element 12 as much as possible, and it can also prevent air bubbles from entering the water pump 200 through the water outlet pipe 32 and affecting its operation.

[0047] In this embodiment, the flow equalization element 31 can be a circular plate structure and the diameter of the flow equalization element 31 is larger than the inner diameter of the water outlet pipe 32, so as to achieve the flow equalization function without affecting the water outlet efficiency of the water outlet pipe 32.

[0048] Main reference Figure 3 In one embodiment, the distance between the working water level line of the underwater filtration device and the filter element 12 is greater than 300 mm.

[0049] In this embodiment, a float can be configured above the filter body 10, or a support foot can be directly set at the bottom of the pool to support the filter body 10 and raise it to the target height, so as to control the water level difference between the water surface and the filter element 12 to be more than 300mm, ensuring that the raw water flows from top to bottom through the filter element 12 and then flows to the outlet pipe 32 for discharge.

[0050] Conventional pre-pump microfiltration machines use high-pressure water to wash the filter screen, requiring a spray device and a sufficient number of nozzles. Especially underwater, the resistance of the water jet is significant, necessitating high head and large flow rate of cleaning water for effective filter screen cleaning. This results in high energy consumption, complex structure, and a high failure rate. In contrast, this underwater filtration device utilizes a high-flow-rate gas supplied by an aerator, delivered to the bubble outlet 22. A large number of bubbles are continuously emitted from its side. The rising and breaking of these bubbles causes water agitation, forming a backwash flow that effectively cleans the filter screen. The bubbles emitted in opposite directions from the two bubble outlets drive the bubble outlet 22 to rotate, continuously aerating and cleaning the circular surface of the filter screen. Furthermore, this underwater filtration device also boasts advantages such as low energy consumption, simple structure, and low failure rate.

[0051] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An underwater filtration device, characterized in that, include: Filter body; as well as An aeration and cleaning mechanism is used to generate bubbles; the aeration and cleaning mechanism includes a bubble generator and a bubble outlet, the bubble generator is connected to the bubble outlet, the bubble outlet is provided with at least one bubble outlet hole, the bubble outlet is located on one side of the filter body and the bubbles discharged from the bubble outlet hole pass at least partially through the filter body to aerate and clean the filter body.

2. The underwater filtration device as described in claim 1, characterized in that, The filter body includes a support assembly and a filter element, the filter element being disposed on the support assembly and extending in a direction parallel to the horizontal plane.

3. The underwater filtration device as described in claim 2, characterized in that, The filter element is rotatably mounted inside the support assembly via a rotating shaft. The rotating shaft has an internal air supply channel, and the two ends of the air supply channel are respectively connected to the output end of the bubble generator and the input end of the bubble outlet element.

4. The underwater filtration device as described in claim 2 or 3, characterized in that, The bubble outlet and the filter are arranged in parallel.

5. The underwater filtration device as described in claim 3, characterized in that, The bubble outlet is located on the side of the bubble outlet relative to the filter element. The bubble outlet has a tubular structure and the bubble outlet on the bubble outlet is symmetrical about the axis of rotation.

6. The underwater filtration device as described in claim 3, characterized in that, The aeration and cleaning mechanism further includes a transition cavity disposed on the support assembly. The transition cavity is provided with a transition chamber for buffering gas. One end of the transition cavity is connected to the rotating shaft, and the other end of the transition cavity is connected to the bubble generator.

7. The underwater filtration device as described in claim 2, characterized in that, The filter body also includes a water outlet pipe installed on the support assembly. The water outlet pipe has an inlet and an outlet. The inlet of the water outlet pipe is located on the lower side of the bubble outlet element, and the outlet of the water outlet pipe is adapted to be connected to a water pump.

8. The underwater filtration device as described in claim 7, characterized in that, A flow equalization element is provided between the water inlet of the water outlet pipe and the bubble outlet element. The flow equalization element is used to prevent air bubbles from entering the water outlet pipe and to disperse the suction force of the water outlet pipe to prevent the water flow from forming a vortex.

9. The underwater filtration device as described in claim 8, characterized in that, The flow equalization element is a circular plate structure, and the diameter of the flow equalization element is larger than the inner diameter of the outlet pipe.

10. The underwater filtration device as described in claim 2, characterized in that, The distance between the working water level line of the filter body and the filter element is greater than 300mm.

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