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 a water-gas combined cleaning mechanism, the water-gas combined cleaning mechanism comprises a bubble cleaning assembly and a water spraying assembly; the bubble cleaning assembly is arranged on the lower side of the filtering main body and is used for forming bubbles so as to clean the bubbles; the water spraying assembly is arranged on at least one side of the filtering main body to spray water to clean the filtering main body. According to the invention, a cleaning mechanism of an underwater filtering device is improved, and a pre-pumping micro filter in a water-gas combined cleaning form is designed, so that the self-cleaning effect is greatly improved.

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 micro-filter is a filtering device installed in the water of the pool in front of the first pump station of water-saving irrigation. It is an all-in-one machine with a buoy that can float independently. It first filters the water in the pool in front of the pump station, and then the filtered clean water is sucked by the pump to provide it to the water-saving irrigation system for drip irrigation. It ensures that the filtered water quality meets the drip irrigation water standard and prevents the silt and impurities in the water body from clogging the drip irrigation belt, resulting in ineffective drip irrigation to the plants.

[0003] At present, when the pre-pump microfilter is used for filtering, it is necessary to continuously and reliably clean the filter screen at any time to prevent the filter screen from being blocked continuously. The filter screen is cleaned while filtering, and the filter screen is always kept clean. Most of the self-cleaning functions of the existing pre-pump filters use high-pressure water to spray high-speed water through the nozzle to flush the filter screen to clean the filter screen cylinder. However, this single water spray cleaning method has limited cleaning effect on the filter screen, and the filter screen will still be blocked after the pre-pump microfilter has been running for a long time. Summary of the invention

[0004] The main purpose of the present invention is to provide an underwater filtering device, aiming to improve the cleaning effect of the filter screen.

[0005] To achieve the above object, the present invention provides an underwater filtering device, comprising:

[0006] Filter body; and

[0007] The water-gas combined cleaning mechanism comprises a bubble cleaning component and a water spray component; the bubble cleaning component is arranged on the lower side of the filter body and is used to form bubbles to perform bubble cleaning on it; the water spray component is arranged on at least one side of the filter body to perform water spray cleaning on it.

[0008] Optionally, the bubble cleaning assembly includes an air pump and an exhaust pipe connected to the air pump, the exhaust pipe is provided with a plurality of air outlet holes, and the bubbles discharged from the plurality of air outlet holes at least partially pass through the filter body during the floating process.

[0009] Optionally, the exhaust pipe is an annular aeration foaming pipe arranged at the bottom of the filter body, and a plurality of the air outlet holes are evenly arranged on the annular aeration foaming pipe at circumferential intervals.

[0010] Optionally, the bubble cleaning assembly further includes a bubble breaking component, which is arranged on the movement trajectory of the bubble and is used to puncture the bubble.

[0011] Optionally, the filter body includes a support frame, a filter cartridge and blades; the filter cartridge is rotatably arranged in the support frame through a rotating shaft; the blades are sleeved on the rotating shaft, and the blades are used to rotate under the drive of water flow and drive the filter cartridge to rotate.

[0012] Optionally, the bubble breaking component includes a mounting arm and two bubble breaking arms respectively connected to the two ends of the mounting arm, the middle part of the mounting arm is sleeved on the rotating shaft so as to rotate synchronously driven by the rotating shaft, and the two bubble breaking arms are respectively arranged on both sides of the filter cartridge and are each provided with a plurality of spike portions.

[0013] Optionally, the bubble breaking arm is extended along the axial direction of the rotating shaft.

[0014] Optionally, the rotating shaft includes a central shaft tube and an outer sleeve sleeved on the outer circumference of the central shaft tube, a water supply channel is formed between the outer sleeve and the central shaft tube, and one end of the outer sleeve is suitable for connecting to the water outlet end of a water pump; the water spray assembly includes a first water spray pipe arranged inside the filter cartridge, the first water spray pipe is connected to the water supply channel of the outer sleeve and is used to spray water from the inside of the filter cartridge to the outside thereof.

[0015] Optionally, the water spray assembly further includes a second water spray pipe, which is disposed outside the filter cartridge, and one end of the second water spray pipe is suitable for connecting to a water outlet end of the water pump and for spraying water from the outside of the filter cartridge to the inside thereof.

[0016] Optionally, a water guide cylinder is provided on the outer periphery of the blade, and a water inlet is formed at the upper end of the water guide cylinder. The water guide cylinder is suitable for connecting to the water pumping end of the water pump. The water outlet end of the water pump is connected to the outer casing and is suitable for transporting filtered water to the irrigation water system.

[0017] In the technical solution of the present invention, the underwater filter device includes a filter body and a water-gas combined cleaning mechanism; the water-gas combined cleaning mechanism includes a bubble cleaning component and a water spray component; the bubble cleaning component is arranged on the lower side of the filter body and is used to form bubbles to perform bubble cleaning on it; the water spray component is arranged on at least one side of the filter body to perform water spray cleaning on it. It can be understood that the present invention improves the cleaning mechanism of the underwater filter device, designs a pre-pump microfilter in the form of water-gas combined cleaning, and greatly improves the self-cleaning effect.

[0018] The present invention cleans the annular cylindrical surface of the filter cartridge with bubbles. The air pump continuously emits bubbles, which rise rapidly and explode in the water body, causing violent agitation of the water body. The filter net can be cleaned efficiently by utilizing the violent agitation. 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 an application of an underwater filtering device according to an embodiment of the present invention;

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

[0022] Figure 3 It is a schematic diagram of the structure of an exhaust pipe in an embodiment of an underwater filtering device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the bubble breaking arm in one embodiment of the underwater filtering device of the present invention.

[0024] Description of Figure Numbers:

[0025] 10. Filter body; 20. Water-gas combined cleaning mechanism; 210. Bubble cleaning assembly; 220. Water spray assembly; 211. Air pump; 212. Exhaust pipe; 212a. Air outlet; 213. Bubble breaking member; 11. Support frame; 12. Filter cartridge; 13. Blades; 14. Rotating shaft; 201. Mounting arm; 202. Bubble breaking arm; 2021. Spike; 221. First water spray pipe; 222. Nozzle; 131. Water guide tube; 100. Underwater filtering device; 300. Water pump.

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The present invention provides an underwater filtering device, in particular a pre-pump micro-filter, which is not limited here.

[0032] Reference Figure 1 and Figure 2 In one embodiment of the present invention, the underwater filtering device 100 includes a filtering body 10 and a water-gas combined cleaning mechanism 20; the water-gas combined cleaning mechanism 20 includes a bubble cleaning component 210 and a water spray component 220; the bubble cleaning component 210 is arranged on the lower side of the filtering body 10 and is used to form bubbles to perform bubble cleaning thereon; the water spray component 220 is arranged on at least one side of the filtering body 10 to perform water spray cleaning thereon.

[0033] In this embodiment, the filter body 10 may include a support frame 11, a filter cartridge 12 and blades 13; the filter cartridge 12 is rotatably disposed in the support frame 11 via a rotating shaft 14, and a filter screen for filtering water is disposed on the filter cartridge 12; the blades 13 are sleeved on the rotating shaft 14, and the blades 13 are used to rotate under the drive of the water flow and drive the filter cartridge 12 to rotate. Of course, in some other embodiments, the filter body 10 may also be composed of other underwater filtering structures, which are not limited here.

[0034] In this embodiment, the bubble cleaning assembly 210 may include any device that can form bubbles, such as an air pump 211, etc., which is not limited here. The water spray assembly 220 may include at least one water spray pipe, and a nozzle 222 may be installed on the water spray pipe to enhance the washing effect.

[0035] It can be understood that the present invention improves the cleaning mechanism of the underwater filtering device 100, designs a pre-pump microfilter in the form of water-gas combined cleaning, and greatly improves the self-cleaning effect.

[0036] To further improve the bubble cleaning effect, refer to Figures 1 to 4 In one embodiment, the bubble cleaning assembly 210 may include an air pump 211 and an exhaust pipe 212 connected to the air pump 211, the exhaust pipe 212 is provided with a plurality of air outlet holes 212a, and the bubbles discharged from the plurality of air outlet holes 212a at least partially pass through the filter body 10 during the floating process.

[0037] In this embodiment, the exhaust pipe 212 can be an annular aeration foaming pipe arranged at the bottom of the filter body 10, and a plurality of air outlet holes 212a are evenly arranged on the annular aeration foaming pipe at circumferential intervals. When the air pump 211 is working, the annular aeration foaming pipe continuously emits bubbles, and the volume of the bubbles gradually expands as they rise, and the airflow drives the formation of an ascending water flow. In this way, it helps to improve the uniformity of the self-cleaning effect of the underwater filter device.

[0038] The bottom of the filter screen of the underwater filter device 100 of the present invention is provided with an annular aeration foaming pipe, which is connected to the air pump 211 for aeration in the pump room through an external pipeline. When the air pump 211 is working, a large flow of low-compression air is delivered into the annular aeration foaming pipe. The top of the annular aeration foaming pipe is provided with an air outlet 212a, and a large flow of bubbles are emitted through the air outlet 212a. The bubbles rise sharply in the water body and explode, which will cause a violent disturbance to the water body.

[0039] Reference Figures 1 to 4 In one embodiment, the bubble cleaning assembly 210 may further include a bubble breaking member 213, which is disposed on the movement trajectory of the bubble and is used to puncture the bubble. This helps to rupture more bubbles and greatly enhance the bubble cleaning effect; in addition, the bubble can also be ruptured at the target position to perform targeted cleaning on the target position of the filter body 10.

[0040] In this embodiment, the bubble breaking component 213 may include a mounting arm 201 and two bubble breaking arms 202 respectively connected to the two ends of the mounting arm 201. The middle part of the mounting arm 201 is sleeved on the rotating shaft 14 so as to rotate synchronously driven by the rotating shaft 14. The two bubble breaking arms 202 are respectively arranged on both sides of the filter cartridge 12 and are each provided with a plurality of spike portions 2021.

[0041] Preferably, the bubble breaking arm 202 is extended along the axial direction of the rotating shaft 14 to enhance the cleaning effect on the entire cylindrical surface of the filter screen.

[0042] The blades 13 drive the rotating shaft 14 to rotate, thereby driving Figure 2The bubble breaking arms 202 on the left and right sides rotate synchronously. The bubble breaking arms 202 are provided with needle-like protrusions. When rotating at high speed, the needle-like protrusions pierce bubbles. The explosion of the bubbles rapidly moves the water body, which can further carry the impurities flushed out from the inside away from the filter at high speed, so that the filter can be efficiently cleaned and the filtering capacity can be maintained continuously. In addition, this cleaning method has low energy consumption.

[0043] Main reference Figure 2 In one embodiment, the rotating shaft 14 may include a central shaft tube and an outer sleeve sleeved on the outer periphery of the central shaft tube, a water supply channel is formed between the outer sleeve and the central shaft tube, and one end of the outer sleeve is suitable for connecting to the water outlet end of the water pump 300; the water spray assembly 220 includes a first water spray pipe 221 arranged inside the filter cartridge 12, the first water spray pipe 221 is connected to the water supply channel of the outer sleeve and is used to spray water from the inside of the filter cartridge 12 to the outside thereof.

[0044] Furthermore, the water spray assembly 220 may also include a second water spray pipe (not shown), which is disposed outside the filter cartridge 12, and one end of the second water spray pipe is suitable for connecting to the water outlet of the water pump 300 and is used to spray water from the outside of the filter cartridge 12 to the inside thereof. In this way, the cleaning effect of the filter screen can be further improved.

[0045] Specifically, the first water spray pipe 221 is arranged inside the filter body 10, and the first water spray pipe 221 sprays water in a first direction to wash the filter body 10. The second water spray pipe is arranged outside the filter body 10, and the second flushing assembly sprays water in a second direction to wash the filter body 10. The first direction intersects with the contour line of the filter cartridge 12 at point A, and the intersection of the first direction and the contour line of the filter cartridge 12 is point B. Point A and point B coincide on the top projection surface of the filter cartridge 12. Such an arrangement can achieve a better flushing effect.

[0046] Reference Figures 1 to 4 In one embodiment, the outer periphery of the blade 13 may be sleeved with a water guide tube 131, the upper end of the water guide tube 131 forms a water guide inlet, and the water guide tube 131 is suitable for connecting the water pumping end of the water pump 300. The water outlet end of the water pump 300 is connected to the outer casing and is suitable for conveying filtered water to the irrigation water system. The present invention uses the water pump 300 as the water supply device of the water spraying assembly 220, thereby reducing one water supply device and greatly reducing the cleaning cost.

[0047] In the present invention, the underwater filter device 100 is connected to the pumping end of the pump 300 through a pipeline. The pump 300 sucks the clean water filtered by the filter cartridge 12, and then pressurizes the clean water and delivers it to the irrigation water system, wherein a small amount of high-pressure water is returned for the water spraying assembly 220 of the underwater filter device 100 as water for backwashing the filter. After the backwashing water enters the filter cartridge 12 through the pipeline, it is divided into two high-pressure water spraying pipes, and nozzles 222 that can spray fan-shaped water flow are distributed on the water spraying pipes, which can spray water from the inside to the outside to wash the filter, thereby flushing the impurities and sediment intercepted on the filter during filtration away from the filter.

[0048] In the present invention, when the water pump 300 in the pump station pumps water, the blades 13 drive the nozzle in the filter cartridge 12 to rotate under the action of the water flow power, and the nozzle 222 sprays flushing water to flush the filter screen; at the same time, the rotating shaft 14 drives the bubble breaking arm 202 outside the filter screen to rotate synchronously. The bubble breaking arm 202 has needle-like protrusions, which puncture bubbles and produce explosions when rotating at high speed, and the surrounding water body moves rapidly accordingly, hitting the impurities intercepted by the filter screen and causing them to fall out of the screen. At the same time, the rising water flow quickly removes impurities such as mud and sand from the filter screen, and efficiently cleans the filter screen, so that its filtering performance is restored, which helps to reduce the maintenance cycle and extend the service life of the filter screen.

[0049] In the present invention, aeration cleaning is introduced into the cleaning of the filter cartridge 12 of the microfilter in front of the pump station forebay for water-saving irrigation, which greatly enhances the cleaning effect of the filter screen. The normal bursting of bubbles in water bodies mainly occurs when the bubbles rise from the bottom of the water to the surface of the water, so the disturbing effect of the bubbles is general. The present invention configures a synchronously rotating bubble breaking arm 202, which is provided with a needle-like protrusion, which can puncture the bubble when it rotates and hits the bubble, and can puncture the bubble at the target position, so that the water flow in the area produces violent movement, and the debris on the filter screen is rapidly disturbed.

[0050] 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 The water-gas combined cleaning mechanism comprises a bubble cleaning component and a water spray component; the bubble cleaning component is arranged on the lower side of the filter body and is used to form bubbles to perform bubble cleaning on it; the water spray component is arranged on at least one side of the filter body to perform water spray cleaning on it.

2. The underwater filtering device according to claim 1, characterized in that: The bubble cleaning assembly includes an air pump and an exhaust pipe connected to the air pump. The exhaust pipe is provided with a plurality of air outlets. The bubbles discharged from the plurality of air outlets at least partially pass through the filter body during the floating process.

3. The underwater filtering device according to claim 2, characterized in that: The exhaust pipe is an annular aeration foaming pipe arranged at the bottom of the filter body, and a plurality of the air outlet holes are evenly arranged on the annular aeration foaming pipe at circumferential intervals.

4. The underwater filtering device according to claim 2, characterized in that: The bubble cleaning component also includes a bubble breaking component, which is arranged on the movement trajectory of the bubble and is used to puncture the bubble.

5. The underwater filtering device according to claim 4, characterized in that: The filter body comprises a support frame, a filter cartridge and blades; the filter cartridge is rotatably arranged in the support frame via a rotating shaft; the blades are sleeved on the rotating shaft, and the blades are used to rotate under the drive of water flow and drive the filter cartridge to rotate.

6. The underwater filtering device according to claim 5, characterized in that: The bubble breaking component includes a mounting arm and two bubble breaking arms respectively connected to the two ends of the mounting arm. The middle part of the mounting arm is sleeved on the rotating shaft so as to rotate synchronously under the drive of the rotating shaft. The two bubble breaking arms are respectively arranged on both sides of the filter cartridge and are each provided with a plurality of spike portions.

7. The underwater filtering device according to claim 6, characterized in that: The bubble breaking arm is extended along the axial direction of the rotating shaft.

8. The underwater filtering device according to claim 5, characterized in that: The rotating shaft includes a central shaft tube and an outer sleeve sleeved on the outer circumference of the central shaft tube, a water supply channel is formed between the outer sleeve and the central shaft tube, and one end of the outer sleeve is suitable for connecting to the water outlet end of a water pump; the water spray assembly includes a first water spray pipe arranged inside the filter cartridge, the first water spray pipe is connected to the water supply channel of the outer sleeve and is used to spray water from the inside of the filter cartridge to the outside thereof.

9. The underwater filtering device according to claim 8, characterized in that: The water spray assembly also includes a second water spray pipe, which is arranged outside the filter cartridge. One end of the second water spray pipe is suitable for connecting to the water outlet end of the water pump and is used to spray water from the outside of the filter cartridge to the inside thereof.

10. The underwater filtering device according to claim 8, characterized in that: The outer periphery of the blade is sleeved with a water guide cylinder, the upper end of which forms a water guide inlet, and the water guide cylinder is suitable for connecting to the water pumping end of the water pump. The water outlet end of the water pump is connected to the outer sleeve and is suitable for conveying filtered water to the irrigation water system.

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