Underwater filtering device

Abstract

The invention discloses an underwater filtering device, and relates to the technical field of microfilters before pumping. 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 invention, a cleaning mechanism of an underwater filtering device is improved, and an aeration self-cleaning type pre-pumping micro-filter is designed, so that the self-cleaning effect is effectively improved, the filtering net can keep high-efficiency filtering capacity, and the maintenance period of the filtering net is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of pre-pump microfilters, and in particular to an underwater filtering device. Background Art

[0002] The pre-pump microfilter is a filtering device installed in front of the pump. It is used to filter the raw water that needs to be filtered. The filtered clean water is extracted by a water pump and provided to the water-saving irrigation system as drip irrigation water.

[0003] When a conventional pre-pump microfilter is used for filtering, the filter screen is generally cleaned by continuously flushing the filter screen cylinder with pressurized water jets to keep the filter screen clean at all times.

[0004] However, this water jet cleaning method is greatly affected by water resistance underwater, and the water pressure of the jet water is greatly weakened before reaching the filter, resulting in very general cleaning effect. Summary of the invention

[0005] The main purpose of the present invention is to provide an underwater filtering device, aiming to improve the self-cleaning effect of the underwater filtering device, so that the filter net can maintain a high-efficiency filtering capacity and reduce the maintenance cycle of the filter net.

[0006] To achieve the above object, the present invention provides an underwater filtering 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 arranged on one side of the filter body and allows the bubbles discharged from the bubble outlet hole to at least partially pass through the filter body, so as to aerate and clean the filter body.

[0009] Optionally, the filter body includes a support assembly and a filter element, and the filter element is arranged on the support assembly and extends in a direction parallel to a horizontal plane.

[0010] Optionally, the filter element is rotatably disposed in the support assembly via a rotating shaft, an air supply channel is provided inside the rotating shaft, and 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.

[0011] Optionally, the bubble outlet element is arranged in parallel with the filter element.

[0012] Optionally, the bubble outlet holes are opened on a side of the bubble outlet component opposite to the filter component, the bubble outlet component is a tubular structure, and the bubble outlet holes on the bubble outlet component are symmetrical about the rotation axis.

[0013] Optionally, the aeration and cleaning mechanism further comprises a transition cavity provided on the support assembly, the transition cavity being provided with a transition cavity for caching gas, one end of the transition cavity being connected to the rotating shaft, and the other end of the transition cavity being connected to the bubble generator.

[0014] Optionally, the filter body also includes a water outlet pipe installed on the support assembly, the water outlet pipe is provided with a water inlet and a water outlet, the water inlet of the water outlet pipe is arranged on the lower side of the bubbler, and the water outlet of the water outlet pipe is suitable for connecting to a water pump.

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

[0016] Optionally, the flow equalizer is a circular plate structure and the diameter of the flow equalizer 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 300 mm.

[0018] In the technical solution of the present invention, the underwater filtering device includes a filtering 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, the bubble outlet is provided with at least one bubble outlet hole, the bubble outlet is arranged on one side of the filtering body and allows at least part of the bubbles discharged from the bubble outlet hole to pass through the filtering body, so as to aerate and clean the filtering body. It can be understood that the present invention proposes an aeration self-cleaning pre-pump micro-filtration device, which effectively improves the self-cleaning effect, enables the filter to maintain a high-efficiency filtering capacity, and reduces the maintenance cycle of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the application of the underwater filtering device of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the underwater filtering device of the present invention;

[0022] Figure 3It is a working schematic diagram of the underwater filtering device of the present invention;

[0023] Figure 4 is a cross-sectional view of the underwater filtering device of the present invention;

[0024] Figure 5 It is a top view of the underwater filtering device of the present invention.

[0025] Description of Figure 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 cavity; 31. Flow equalizing element; 32. Water outlet pipe; 200. Water pump.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention provides an underwater filtering device, in particular a pre-pump micro-filter, which is not limited here.

[0033] Reference Figures 1 to 5 In one embodiment of the present invention, the underwater filtering device includes a filtering 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 arranged on one side of the filtering body 10 and allows at least part of the bubbles discharged from the bubble outlet 22a to pass through the filtering body 10, so as to aerate and clean the filtering body 10.

[0034] In this embodiment, the filter body 10 may include a support assembly 11 and a filter element 12 provided with a filter screen, and 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 may be rotatably arranged in the support assembly 11 through a hollow rotating shaft 23 shown in the figure, and may be driven to rotate by bubbles, or may be provided with rotating blades to drive the rotating shaft 23 to rotate, or may be provided with a driving motor to drive the rotating shaft 23 to rotate, 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 special aerator, etc., which is not limited here.

[0036] The principle is that the impurities and sediments intercepted by the filter are backwashed by the large-flow bubbles output by the aeration and cleaning mechanism 20, thereby achieving the cleaning of the filter.

[0037] It can be understood that the present invention proposes an aerated self-cleaning pre-pump microfiltration device, which effectively improves the self-cleaning effect, enables the filter to maintain a high-efficiency filtering capacity, and reduces the maintenance cycle of the filter.

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

[0039] Specifically, the filter element 12 can use a cylindrical barrel as a shell, a filter screen is set on the upper plane of the top of the barrel, and the bottom of the barrel is connected to the water outlet pipe 32. The raw water flows from the top through the filter screen into the barrel, and impurities in the water body such as mud, algae, etc. are intercepted by the filter screen on the upper surface of the filter screen.

[0040] Reference Figures 1 to 5 In one embodiment, the filter element 12 is rotatably disposed in the support assembly 11 via a rotating shaft 23, and an air delivery channel is provided inside the rotating shaft 23, and the two ends of the air delivery channel are respectively connected to the output end of the bubble generator 21 and the input end of the bubble outlet 22. In this way, by using the rotating shaft 23 as an aeration delivery pipe, the compactness of the structure of the underwater filtering device is improved, and the cost is lower; in addition, the synchronous rotation of the bubble outlet 22 and the filter element 12 is achieved, which is conducive to improving the self-cleaning effect.

[0041] In order 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 holes 22a may be opened on the side of the bubble element 22 opposite to the filter element 12, the bubble element 22 is a tubular structure and the bubble holes 22a on the bubble element 22 are symmetrical about the rotation axis 23.

[0042] In this embodiment, a bubble outlet member 22 is provided at the bottom of the rotating shaft 23, and the bubble outlet member 22 is divided into two bubble outlet pipes by the rotating shaft 23, and the bubble outlet holes 22a on the two bubble outlet pipes are symmetrically arranged. In the process of discharging bubbles from the two bubble outlet pipes, the positive and negative forces of the bubbles drive the bubble outlet pipes to rotate. The bubbles discharged from the bubble outlet pipes rise rapidly, explode when hitting the filter screen, and form a turbulent water flow, and 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 flush away impurities such as mud and sand originally intercepted on the filter screen, so that the filter screen is cleaned and its efficient filtering ability is maintained.

[0043] Reference Figures 1 to 4 In one embodiment, the aeration cleaning mechanism 20 may further include a transition cavity 24 disposed on the support assembly 11, the transition cavity 24 is provided with a transition cavity for caching 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. Such a configuration helps the bubble outlet 22 to continuously and stably discharge bubbles, further improving the stability of aeration cleaning.

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

[0045] In order to improve the filtration efficiency and deliver the filtered water to the irrigation system, etc., refer to Figures 1 to 4 In one embodiment, the filter body 10 also includes a water outlet pipe 32 installed on the support assembly 11, the water outlet pipe 32 is provided with a water inlet and a water outlet, the water inlet of the water outlet pipe 32 is arranged on the lower side of the bubble piece 22, and the water outlet of the water outlet pipe 32 is suitable for connecting with the water pump 200.

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

[0047] In this embodiment, the flow equalizer 31 may be a circular plate structure and the diameter of the flow equalizer 31 may be 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 filtering device and the filter element 12 is greater than 300 mm.

[0049] In this embodiment, a float can be arranged above the filter body 10, or support feet can be directly set on 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 300 mm, thereby 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 microfilters use high-pressure water to flush the filter screen, which requires a water spray device and a sufficient number of nozzles. In particular, the underwater water jet is greatly hindered, and high-lift, high-flow cleaning water is required to effectively clean the filter screen. The energy consumption is large and the structure is complex, and the failure rate is also high. Compared with the prior art, the underwater filter device of the present invention uses a large flow of gas provided by an aeration generator, which is transported to the bubble outlet 22, and a large number of bubbles are continuously emitted from its side. The rising and breaking of the bubbles cause the water body to move, forming a backwash water flow, which can clean the filter screen. The bubbles emitted in the forward and reverse directions of the two bubble outlet pipes drive the bubble outlet 22 to rotate, and the circular plane of the filter screen can be continuously aerated and cleaned. In addition, the underwater filter device of the present invention also has the advantages of low energy consumption, simple structure, and low failure rate.

[0051] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An underwater filtering 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 arranged on one side of the filter body and allows the bubbles discharged from the bubble outlet hole to at least partially pass through the filter body, so as to aerate and clean the filter body.

2. The underwater filtering device according to claim 1, characterized in that: The filter body comprises a support assembly and a filter element. The filter element is arranged on the support assembly and extends in a direction parallel to a horizontal plane.

3. The underwater filtering device according to claim 2, characterized in that: The filter element is rotatably arranged in the support assembly via a rotating shaft, an air delivery channel is arranged inside the rotating shaft, and two ends of the air delivery channel are respectively connected to the output end of the bubble generator and the input end of the bubble outlet element.

4. The underwater filtering device according to claim 2 or 3, characterized in that: The foaming element is arranged in parallel with the filtering element.

5. The underwater filtering device according to claim 3, characterized in that: The bubble outlet holes are opened on the side of the bubble outlet component opposite to the filter component. The bubble outlet component is a tubular structure and the bubble outlet holes on the bubble outlet component are symmetrical about the rotation axis.

6. The underwater filtering device according to claim 3, characterized in that: The aeration and cleaning mechanism further comprises a transition cavity provided on the support assembly, wherein the transition cavity is provided with a transition cavity for caching 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 filtering device according to claim 2, characterized in that: The filter body also includes a water outlet pipe installed on the support assembly, the water outlet pipe is provided with a water inlet and a water outlet, the water inlet of the water outlet pipe is arranged on the lower side of the bubbler, and the water outlet of the water outlet pipe is suitable for connecting with a water pump.

8. The underwater filtering device according to claim 7, characterized in that: A flow equalizer is provided between the water inlet of the water outlet pipe and the bubble outlet, and the flow equalizer is used to prevent bubbles from entering the water outlet pipe and disperse the suction force of the water outlet pipe to prevent the water flow from forming a vortex.

9. The underwater filtering device according to claim 8, characterized in that: The flow equalizer is a circular plate-shaped structure and the diameter of the flow equalizer is greater than the inner diameter of the water outlet pipe.

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

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