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 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 utility model, the cleaning mechanism of the underwater filtering device is improved, and the pre-pumping micro filter in a water-air combined cleaning form is designed, so that the self-cleaning effect is greatly improved.

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 machine is a filtration device installed in the forebay of a water-saving irrigation head pump station. It is an integrated machine with a float that can float independently. It filters the water in the forebay first, and then the water pump draws the filtered clean water to provide drip irrigation water for the water-saving irrigation system. This ensures that the filtered water quality meets the drip irrigation water standards and prevents silt and impurities in the water from clogging the drip irrigation tape, which would prevent effective drip irrigation to plants.

[0003] Currently, pre-pump microfiltration machines require continuous and reliable cleaning of the filter screen during filtration applications to prevent continuous clogging. The screen is cleaned while filtration is in progress, ensuring it remains clean at all times. Most existing pre-pump filters use high-pressure water jets sprayed through nozzles to clean the filter media. However, this single water spray cleaning method has limited effectiveness, and the filter screen still tends to clog after prolonged operation. Utility Model Content

[0004] The main purpose of this invention is to provide an underwater filtration device that improves the cleaning effect of the filter screen.

[0005] To achieve the above objectives, this utility model proposes an underwater filtration device, comprising:

[0006] Filter body; and

[0007] A combined water and air cleaning mechanism includes a bubble cleaning component and a water spraying component; the bubble cleaning component is located on the lower side of the filter body and is used to form bubbles for bubble cleaning; the water spraying component is located on at least one side of the filter body for water spray cleaning.

[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 outlets, and the bubbles discharged from the plurality of air outlets pass through the filter body at least partially during the rising process.

[0009] Optionally, the exhaust pipe is an annular aeration foaming pipe located at the bottom of the filter body, and a plurality of air outlets are evenly spaced circumferentially on the annular aeration foaming pipe.

[0010] Optionally, the bubble cleaning assembly further includes a bubble breaker, which is disposed 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 cylinder, and blades; the filter cylinder is rotatably mounted inside 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 cylinder to rotate.

[0012] Optionally, the bubble-breaking component includes a mounting arm and two bubble-breaking arms connected to both 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 located on both sides of the filter cartridge and each is provided with multiple spikes.

[0013] Optionally, the bubble-breaking arm extends axially along the rotation axis.

[0014] Optionally, the rotating shaft includes a central shaft tube and an outer sleeve sleeved around the outer periphery of the central shaft tube, forming a water supply channel between the outer sleeve and the central shaft tube, and one end of the outer sleeve is adapted to connect to the outlet end of a water pump; the water spray assembly includes a first water spray pipe disposed inside the filter cylinder, the first water spray pipe being connected to the water supply channel of the outer sleeve and used to spray water from the inside of the filter cylinder to its outside.

[0015] Optionally, the water spray assembly further includes a second water spray pipe, which is located outside the filter cylinder. One end of the second water spray pipe is adapted to connect to the outlet of the water pump and is used to spray water from the outside of the filter cylinder into its interior.

[0016] Optionally, a water guide tube is provided around the outer periphery of the blade, and a water inlet is formed at the upper end of the water guide tube. The water guide tube is adapted to connect to the pumping end of the water pump, and the outlet end of the water pump is connected to the outer sleeve and adapted to transport the filtered water to the irrigation water system.

[0017] In the technical solution of this utility model, the underwater filtration device includes a filter body and a water-air combined cleaning mechanism; the water-air combined cleaning mechanism includes a bubble cleaning component and a water spraying component; the bubble cleaning component is located on the lower side of the filter body and is used to form bubbles for bubble cleaning; the water spraying component is located on at least one side of the filter body for water spraying cleaning. It can be understood that this utility model improves the cleaning mechanism of the underwater filtration device and designs a pre-pump microfilter with a water-air combined cleaning method, significantly improving the self-cleaning effect.

[0018] This invention uses bubble cleaning on the annular cylindrical surface of the filter cylinder. An air pump continuously emits bubbles, which rise rapidly in the water and explode, creating a violent agitation in the water. This violent agitation is used to achieve highly efficient cleaning 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 an embodiment of the underwater filtration device of this utility model;

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

[0022] Figure 3 This is a schematic diagram of the exhaust pipe structure in one embodiment of the underwater filtration device of this utility model;

[0023] Figure 4 This is a schematic diagram of the bubble-breaking arm in one embodiment of the underwater filtration device of this utility model.

[0024] Explanation of icon numbers:

[0025] 10. Filter body; 20. Water and air combined cleaning mechanism; 210. Bubble cleaning component; 220. Water spray component; 211. Air pump; 212. Exhaust pipe; 212a. Air outlet; 213. Bubble breaking component; 11. Support frame; 12. Filter cartridge; 13. Blade; 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 filtration device; 300. Water pump.

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This utility model proposes an underwater filtration device, particularly a pre-pump microfilter, but is not limited thereto.

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

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

[0034] In this embodiment, the bubble cleaning assembly 210 may include any device capable of generating 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, on which nozzles 222 may be installed to enhance the rinsing effect.

[0035] It is understood that this utility model improves the cleaning mechanism of the underwater filter device 100 and designs a pre-pump microfilter with water and air combined cleaning, which 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 outlets 212a. The bubbles discharged from the plurality of air outlets 212a pass through the filter body 10 at least partially during the rising process.

[0037] In this embodiment, the exhaust pipe 212 can be an annular aeration foaming pipe located at the bottom of the filter body 10, with multiple air outlets 212a evenly spaced circumferentially on the annular aeration foaming pipe. When the air pump 211 is working, the annular aeration foaming pipe continuously emits bubbles, which gradually expand in volume as they rise, and the airflow drives the formation of an upward water flow. This helps to improve the uniformity of the self-cleaning effect of the underwater filtration device.

[0038] The underwater filtration device 100 of this invention has an annular aeration and foaming pipe at the bottom of its filter screen, which is connected to an air pump 211 for aeration in a pump room via an external pipe. When the air pump 211 is working, it delivers a large flow of low-compressed air into the annular aeration and foaming pipe. An air outlet 212a is opened at the top of the annular aeration and foaming pipe, through which a large flow of bubbles is emitted. The bubbles rise rapidly in the water and explode, creating a violent turbulence in the water.

[0039] Reference Figures 1 to 4 In one embodiment, the bubble cleaning assembly 210 may further include a bubble-breaking element 213, which is disposed on the movement trajectory of the bubble and used to puncture the bubble. This helps to break more bubbles, greatly enhancing the bubble cleaning effect; in addition, it can also cause the bubbles to break at the target location for targeted cleaning of the target location 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 connected to both 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 under the drive of the rotating shaft 14. The two bubble-breaking arms 202 are respectively located on both sides of the filter cylinder 12 and each is provided with multiple spikes 2021.

[0041] Preferably, the bubble-breaking arm 202 is arranged to extend axially along the rotation axis 14 to enhance the cleaning effect on the entire cylindrical surface of the filter screen.

[0042] The blade 13 drives the rotating shaft 14 to rotate, which in turn drives... Figure 2 The bubble-breaking arms 202 on the left and right sides rotate synchronously. The bubble-breaking arms 202 are equipped with needle-shaped protrusions. When rotating at high speed, the needle-shaped protrusions puncture the bubbles. The bubbles explode and violently agitate the water, which can further carry away the impurities washed out from the inside away from the filter screen at high speed, so that the filter screen is cleaned efficiently and maintains continuous filtration capacity. Moreover, 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 around the outer periphery of the central shaft tube, forming a water supply channel between the outer sleeve and the central shaft tube, and one end of the outer sleeve is adapted to connect to the outlet end of the water pump 300; the water spray assembly 220 includes a first water spray pipe 221 disposed inside the filter cylinder 12, the first water spray pipe 221 being connected to the water supply channel of the outer sleeve and used for spraying water from the inside of the filter cylinder 12 to its outside.

[0044] Furthermore, the water spray assembly 220 may also include a second water spray pipe (not shown in the figure), which is located outside the filter cylinder 12. One end of the second water spray pipe is adapted to connect to the outlet of the water pump 300 and is used to spray water from the outside of the filter cylinder 12 into its interior. In this way, the cleaning effect on the filter screen can be further improved.

[0045] Specifically, the first water spray pipe 221 is located inside the filter body 10, and sprays water along a first direction to rinse the filter body 10. The second water spray pipe is located outside the filter body 10, and the second rinsing assembly sprays water along a second direction to rinse the filter body 10. The first and second directions intersect. The second direction is defined as tangent to the outline of the filter cylinder 12 at point A, and the intersection of the first direction and the outline of the filter cylinder 12 is defined as point B. Points A and B coincide on the top view projection surface of the filter cylinder 12. This arrangement can achieve a better rinsing effect.

[0046] Reference Figures 1 to 4 In one embodiment, a water guide tube 131 may be fitted around the outer periphery of the blade 13. The upper end of the water guide tube 131 forms a water inlet. The water guide tube 131 is adapted to connect to the pumping end of the water pump 300. The outlet end of the water pump 300 is connected to the outer sleeve and is adapted to deliver the filtered water to the irrigation water system. By using the water pump 300 as the water supply device for the spray assembly 220, this utility model reduces the number of water supply devices and greatly reduces cleaning costs.

[0047] In this invention, the underwater filtration device 100 is connected to the pumping end of the water pump 300 via a pipe. The water pump 300 draws in the purified water filtered by the filter cylinder 12, then pressurizes the purified water and delivers it to the irrigation water system. A small amount of high-pressure water is returned to the spray assembly 220 of the underwater filtration device 100 for backwashing the filter screen. The backwash water enters the filter cylinder 12 through the pipe and splits into two high-pressure spray pipes. Each spray pipe is equipped with nozzles 222 that can spray fan-shaped water streams, which can spray water from the inside to the outside of the filter screen to wash away impurities and sediment trapped on the filter screen during filtration.

[0048] In this invention, when the water pump 300 in the pumping station pumps water, the blades 13, under the action of water flow, drive the nozzle inside the filter cylinder 12 to rotate, and the nozzle 222 sprays flushing water to wash 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 that puncture the bubbles and cause an explosion when rotating at high speed. The surrounding water moves rapidly, impacting the impurities intercepted by the filter screen and causing them to fall off the screen. At the same time, the rising water flow quickly carries away impurities such as mud and sand from the filter screen, effectively cleaning the filter screen, restoring its filtration performance, and helping to reduce the maintenance cycle and extend the service life of the filter screen.

[0049] In this invention, aeration cleaning is introduced into the cleaning of the filter cartridge 12 of the microfilter in the forebay of the pumping station in water-saving irrigation, significantly enhancing the cleaning effect on the filter screen. Normally, bubbles in water burst when they rise from the bottom to the surface, resulting in only a moderate turbulence effect. This invention, by configuring a synchronously rotating bubble-breaking arm 202 with needle-like protrusions, can puncture bubbles upon contact with them during rotation. This allows for targeted bubble bursting at the target location, causing violent water flow in that area and rapidly disturbing the debris on the filter screen.

[0050] 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 A combined water and air cleaning mechanism includes a bubble cleaning component and a water spraying component; the bubble cleaning component is located on the lower side of the filter body and is used to form bubbles for bubble cleaning; the water spraying component is located on at least one side of the filter body for water spray cleaning.

2. The underwater filtration device as described in 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 has several air outlets, and the bubbles discharged from the several air outlets pass through the filter body at least partially during their ascent.

3. The underwater filtration device as described in claim 2, characterized in that, The exhaust pipe is an annular aeration foaming pipe located at the bottom of the filter body, and a plurality of air outlets are evenly spaced around the annular aeration foaming pipe.

4. The underwater filtration device as described in claim 2, characterized in that, The bubble cleaning assembly also includes a bubble-breaking element, which is disposed on the movement trajectory of the bubble and is used to puncture the bubble.

5. The underwater filtration device as described in claim 4, characterized in that, The filter body includes a support frame, a filter cylinder, and blades; the filter cylinder is rotatably mounted inside the support frame via a rotating shaft; the blades are sleeved on the rotating shaft and are used to rotate under the drive of water flow, thereby driving the filter cylinder to rotate.

6. The underwater filtration device as described in claim 5, characterized in that, The bubble-breaking component includes a mounting arm and two bubble-breaking arms connected to both ends of the mounting arm. The middle part of the mounting arm is sleeved on the rotating shaft so that it rotates synchronously under the drive of the rotating shaft. The two bubble-breaking arms are respectively located on both sides of the filter cylinder and each is provided with multiple spikes.

7. The underwater filtration device as described in claim 6, characterized in that, The bubble-breaking arm extends axially along the rotation axis.

8. The underwater filtration device as described in claim 5, characterized in that, The rotating shaft includes a central shaft tube and an outer sleeve sleeved around the outer periphery of the central shaft tube. A water supply channel is formed between the outer sleeve and the central shaft tube. One end of the outer sleeve is adapted to connect to the outlet end of a water pump. The water spray assembly includes a first water spray pipe disposed inside the filter cylinder. 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 cylinder to the outside.

9. The underwater filtration device as described in claim 8, characterized in that, The water spray assembly further includes a second water spray pipe, which is located outside the filter cylinder. One end of the second water spray pipe is adapted to connect to the outlet of the water pump and is used to spray water from the outside of the filter cylinder into its interior.

10. The underwater filtration device as described in claim 8, characterized in that, The blade is fitted with a water guide tube on its outer periphery. The upper end of the water guide tube forms a water inlet. The water guide tube is adapted to connect to the pumping end of the water pump. The pumping end is connected to the outer sleeve and is adapted to transport the filtered water to the irrigation water system.

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