V-shaped filter tank backwashing device based on ultrasonic waves

Abstract

The invention discloses an ultrasonic wave-based V-shaped filter tank backwashing device, and relates to the technical field of filter tank backwashing, the ultrasonic wave-based V-shaped filter tank backwashing device comprises a filter tank and an ultrasonic wave cleaning member, the ultrasonic wave frequency generated by an ultrasonic transducer initiates a cavitation effect in a liquid, gas dissolved in the liquid forms tiny bubbles under the action of an ultrasonic wave, and the tiny bubbles are separated from the filter tank. Bubbles are periodically expanded, compressed and continuously vibrated along with sound waves, shock waves of the cavitation bubbles destroy pollutants and adsorbates on the surface of the filter material, so that attachments such as organic matters, colloids and microorganisms are fatigued and fall off, residual pollutants are further removed, and the sound waves are transmitted into water through sound transmission gel in the elastic wrapping sleeve. The acoustic transmission gel can reduce loss of sound wave energy, the damper further relieves vibration caused by ultrasonic waves, the stainless steel filter plate is protected, the stripping effect of surface sludge and impurities is improved through cooperation of the vibration balls reserved in the coarse sand, and the backwashing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filter backwashing, and more particularly to an ultrasonic-based V-shaped filter backwashing device. Background Art

[0002] As a high-efficiency filtration structure widely used in water treatment processes, the V-type filter has a reasonable structural design and stable operation. It plays an important role in urban water supply and sewage treatment. In actual operation, as pollutants such as suspended matter, colloids and microorganisms in the water to be treated are continuously retained in the filter material layer, an attachment layer gradually forms on the surface of the filter material, resulting in a decrease in the porosity of the filter layer and an increase in water flow resistance, which in turn causes problems such as filter blockage, shortened filtration cycle, and fluctuation in effluent water quality. In order to restore the filtration performance of the filter, backwashing operations must be performed regularly.

[0003] At present, V-type filters generally adopt a combined air-water backwashing method, that is, air and water are backwashed at the same time, so that the filter particles are disturbed by the gas and impacted by the water flow and rub against each other, thereby peeling off the attached sludge; then they are rinsed with clean water alone to further remove residual impurities. In addition, during the backwashing process, the filter still maintains a small amount of water intake, and water is sprayed through the small holes at the bottom of the V-shaped groove to sweep the water surface, which helps to guide the floating impurities to the drain tank for discharge.

[0004] In actual use of the existing technology, due to the high compaction degree of the filter media in the V-type filter, the gaps between the filter media particles are small and the fluidity is poor during the backwashing process. The vibration and friction between the filter media during air and water backwashing are small, which makes it difficult for the sludge attached to the filter media to be separated. Relying solely on air and water backwashing can no longer meet the needs of efficient and thorough cleaning of the filter media. Therefore, in response to the above technical problems, it is necessary to provide a V-type filter backwashing device based on ultrasound. Summary of the Invention

[0005] The object of the present invention is to provide a V-type filter backwashing device based on ultrasound to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by one embodiment of the present invention is as follows: A V-type filter backwashing device based on ultrasonic wave, comprising: A filter tank, wherein a water collection trough is provided at the bottom of the inner cavity of the filter tank, a vacuum pump is installed on the outer wall of the water collection trough, a plurality of drainage pipes are fixedly embedded in the upper part of the inner cavity of the filter tank, a stainless steel filter plate is fixedly connected to the inner cavity of the filter tank, a supporting layer is covered on the upper part of the stainless steel filter plate, a filter material layer is covered on the upper part of the supporting layer, a drainage trough is provided in the inner cavity of the filter tank, an air and water distribution channel is provided in the inner cavity of the water collection trough, a water distribution hole is provided below the air and water distribution channel, an air distribution hole is provided above the air and water distribution channel, and a plurality of vibrating balls are mixed inside the supporting layer; The ultrasonic cleaning component includes multiple protective covers fixedly connected to the lower surface of the stainless steel filter plate. The bottom of the inner cavity of the protective cover is fixedly connected to an ultrasonic transducer and is connected to the interior of the protective cover. The upper end of the stainless steel filter plate and the inner cavity of the protective cover is fixedly connected to an elastic wrapping sleeve. The inner cavity of the elastic wrapping sleeve is wrapped with sound-transparent gel. A vibration plate is installed on the upper surface of the stainless steel filter plate.

[0007] A damper is fixedly connected to the middle part of the lower surface of the protective cover, the lower end of the damper is fixedly connected to the bottom of the inner cavity of the filter tank, and the protective cover is welded and fixed to the stainless steel filter plate.

[0008] The emitting end of the ultrasonic transducer abuts against the lower surface of the elastic wrapping sleeve, and the elastic wrapping sleeve is made of a transparent material.

[0009] The vibration plate includes a protective layer fixedly connected to the upper surface of the stainless steel filter plate, the protective layer is provided with filter holes corresponding to the stainless steel filter plate, and a plurality of arc-shaped covers are evenly and fixedly connected to the protective layer.

[0010] The arc-shaped cover is located directly above the protective cover and the diameters of the arc-shaped cover and the protective cover are the same. A plurality of water inlet holes are provided on the outer surface of the arc-shaped cover.

[0011] The inner cavity of the arc-shaped cover is fixedly connected with an elastic plate, and the inner cavity of the elastic plate is inlaid with a magnetic block 1.

[0012] The vibration ball includes lightweight spheres uniformly mixed inside a supporting layer, and the lightweight spheres are hollow inside.

[0013] The inner cavity of the lightweight sphere is movably connected to a second magnetic block, which is spherical.

[0014] A plurality of elastic rods are evenly and fixedly connected to the outer surface of the lightweight sphere, and the elastic rods are inserted into the supporting layer.

[0015] The filter material layer is composed of quartz sand, and the supporting layer is composed of coarse quartz sand.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This scheme injects compressed air into the filter media layer through the air distribution holes of the air and water distribution channel. The bubbles stir the filter media during their rise, causing slight vibrations, enhancing the collision and friction between particles, removing mud balls and flocs on the filter media surface, and initially loosening the pollutants. Then, backwash water is injected through the water distribution holes. The direction of the water flow is opposite to the filtration direction. The high-speed water flow flushes the loosened pollutants together with the debris generated by the cavitation effect into the drainage trough. The upper and lower filter tanks share a set of backwash and inlet and outlet water systems. The cleaning of the two layers of filter media is controlled separately by independent drainage troughs and air and water distribution channels. The double-layer filter tank achieves twice the filtration capacity under the same floor space, reducing the processing cost.

[0017] (2) This scheme triggers the cavitation effect in the liquid through the ultrasonic frequency generated by the ultrasonic transducer. The dissolved gas in the liquid forms tiny bubbles under the action of the sound waves. The bubbles expand and compress periodically with the sound waves and vibrate continuously. The shock waves of the cavitation bubbles destroy the pollutants and the adsorbents on the surface of the filter material, causing the attachments such as organic matter, colloids, and microorganisms to fatigue and fall off, further removing the residual pollutants. The sound waves are transmitted to the water through the sound-transparent gel inside the elastic wrapping sleeve. The sound-transparent gel can reduce the loss of sound wave energy. The damper further alleviates the vibration caused by the ultrasound and protects the stainless steel filter plate.

[0018] (4) In this scheme, the arc cover is located directly above the sound-transmitting gel, and the sound wave energy received by the water source inside the arc cover is the strongest. At this time, the cavitation bubbles generated by the water source in the arc cover will release a high-intensity impact force at the moment of bursting, impacting the elastic plate, causing it to generate low-frequency vibration. When the elastic plate vibrates, the magnetic force of the internal magnetic block 1 and magnetic block 2 drives the lightweight sphere to also vibrate. The lightweight sphere produces random rolling and collision under the combined action of the cavitation bubbles generated by the ultrasonic wave and the elastic plate. The lightweight sphere and the elastic rod on its outer surface reciprocate to collide with the large-grained quartz sand in the supporting layer, causing impact resonance on the coarse sand, and can also rub against its surface to improve the stripping effect of surface sludge and impurities, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a schematic cross-sectional view of a local structure of the present invention; Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 This is a schematic diagram of the arc cover structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the ultrasonic cleaning component of the present invention after being disassembled; Figure 7 This is a schematic diagram of the structure of the vibration ball of the present invention; Figure 8 It is a schematic cross-sectional view of the vibrating ball structure of the present invention.

[0020] Description of the numbers in the figure: 1. Filter tank; 2. Water collection tank; 3. Vacuum pump; 4. Drain pipe; 5. Stainless steel filter plate; 6. Support layer; 7. Filter material layer; 8. Drain trough; 9. Air and water distribution channel; 10. Water distribution hole; 101. Air distribution hole; 11. Ultrasonic cleaning component; 1101. Protective cover; 1102. Damper; 1103. Ultrasonic transducer; 1104. Elastic wrapping sleeve; 1105. Sound-transmitting gel; 12. Vibrating plate; 1201. Protective layer; 1202. Curved cover; 1203. Water inlet; 1204. Elastic plate; 1205. Magnetic block 1; 13. Vibrating ball; 1301. Lightweight sphere; 1302. Elastic rod; 1303. Magnetic block 2. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-Figure 3 A V-shaped filter backwashing device based on ultrasound comprises a filter 1 and an ultrasonic cleaning component 11. A water collecting trough 2 is provided at the bottom of the inner cavity of the filter 1, a vacuum pump 3 is installed on the outer wall of the water collecting trough 2, a plurality of drainage pipes 4 are embedded and fixed on the upper part of the inner cavity of the filter 1, a stainless steel filter plate 5 is fixedly connected to the inner cavity of the filter 1, a supporting layer 6 is covered on the top of the stainless steel filter plate 5, a filter material layer 7 is covered on the supporting layer 6, a drainage trough 8 is provided in the inner cavity of the filter 1, an air and water distribution channel 9 is provided in the inner cavity of the water collecting trough 2, a water distribution hole 10 is provided below the air and water distribution channel 9, and an air distribution hole 101 is provided above the air and water distribution channel 9.

[0024] Specifically, the water to be treated enters the filter tank 1 from the drainage pipe 4 pre-buried at the top of the filter tank 1. The drainage pipe 4 is distributed along the filter tank 1. When the water flows through the filter material layer 7 (quartz sand or sea sand with a particle size of 0.85-1.2 mm), pollutants such as suspended matter, colloids, and microorganisms are retained on the surface of the filter material or in the internal pores, thereby achieving water purification. The supporting layer 6 (coarse quartz sand with a particle size of 2-4 mm) supports the filter material layer 7 to prevent the loss of the filter material and at the same time evenly distributes the water flow. A negative pressure is formed by the vacuum pump 3 (the body of the vacuum pump 3 is installed on the outer wall and is connected to the inside of the water collection tank 2 through a pipe) to enhance the filtration speed. The stainless steel filter plate 5 isolates the filter material from the lower water collection tank 2. The vacuum pump 3 evacuates the water collection tank 2 to form a local negative pressure environment, which increases the water flow speed and keeps the seepage diameter unchanged. The pollutants are adsorbed or retained by the surface of the filter material, and the clean water enters the water collection tank 2 through the pores of the stainless steel filter plate 5 and is discharged through the pipe.

[0025] The filter tank 1 is cast with reinforced concrete, and the inner wall is smooth and resistant to acid and alkali corrosion. A drainage pipe 4 is embedded on the top of the filter tank 1. The pipe diameter is designed according to the water treatment volume to ensure a stable water flow. The water collection tank 2 is located at the bottom of the filter tank 1 and is used to collect the filtered clean water.

[0026] The air and water distribution channel 9 integrates the water distribution hole 10 and the air distribution hole 101, which are used to input the air-water mixture during backwashing. When backwashing the filter material, compressed air is injected into the filter material layer 7 through the air distribution hole 101 of the air and water distribution channel 9. The filter material is stirred during the rising process of the bubbles, causing the filter material to vibrate slightly, enhancing the collision and friction between the particles, removing the mud balls and flocs on the surface of the filter material, and preliminarily loosening the pollutants. Backwash water is injected through the water distribution hole 10. The direction of the water flow is opposite to the filtration direction. The high-speed water flow flushes the loosened pollutants together with the debris generated by the cavitation effect into the drain trough 8. It can be designed as a double-layer filter structure as needed and supported by a concrete structure. The upper and lower filter tanks 1 share a set of backwashing and water inlet and outlet systems. The cleaning of the two layers of filter material is controlled separately by independent drain troughs 8 and air and water distribution channels 9. The double-layer filter tank 1 achieves twice the filtration capacity under the same footprint, reducing processing costs.

[0027] The apertures of the water distribution hole 10 and the air distribution hole 101 are designed according to the backwash intensity requirements. The drainage trough 8 is located on the upper part of the filter tank 1 to ensure that the backwash wastewater is quickly discharged to avoid secondary pollution.

[0028] Example 2

[0029] See also Figure 1 、 Figure 2 , Figure 3 、 Figure 6 A V-type filter tank backwashing device based on ultrasound also includes an ultrasonic cleaning part 11, including multiple protective covers 1101 fixedly connected to the lower surface of the stainless steel filter plate 5, an ultrasonic transducer 1103 is fixedly connected to the bottom of the inner cavity of the protective cover 1101 and is communicated with the interior thereof, an elastic wrapping sleeve 1104 is fixedly connected to the upper end of the inner cavity of the stainless steel filter plate 5 and the protective cover 1101, the inner cavity of the elastic wrapping sleeve 1104 is wrapped with a sound-transmitting gel 1105, and a vibration plate 12 is installed on the upper surface of the stainless steel filter plate 5.

[0030] Specifically, a damper 1102 is fixedly connected to the middle part of the lower surface of the protective cover 1101, the lower end of the damper 1102 is fixedly connected to the bottom of the inner cavity of the filter tank 1, the protective cover 1101 is welded and fixed to the stainless steel filter plate 5, and the transmitting end of the ultrasonic transducer 1103 is in contact with the lower surface of the elastic wrapping sleeve 1104, and the elastic wrapping sleeve 1104 is made of transparent material.

[0031] An ultrasonic transducer 1103 is mounted at the bottom of the inner cavity of protective cover 1101. Protective cover 1101 is installed below the stainless steel filter plate 5. Dampers 1102 absorb some of the vibration energy, reducing mechanical fatigue damage to the stainless steel filter plate 5 caused by ultrasonic vibrations. Protective cover 1101 is welded integrally with the stainless steel filter plate 5 from stainless steel, eliminating gaps that could allow moisture to enter. This protects ultrasonic transducer 1103 and prevents entanglement with debris. Damper 1102, which can be a rubber or spring damper, effectively absorbs vibration energy and reduces mechanical fatigue damage to the stainless steel filter plate 5.

[0032] The ultrasonic frequency (typically 20-100 kHz) generated by ultrasonic transducer 1103 triggers cavitation in the liquid. Dissolved gases in the liquid form tiny bubbles under the action of the sound waves. These bubbles periodically expand and contract with the sound waves, continuously vibrating. The shockwaves from these cavitation bubbles disrupt the bonds between pollutants and the surface of the filter media, the quartz sand. This causes organic matter, colloids, microorganisms, and other attached materials to fatigue and fall off. The shear force generated by the bubble vibrations directly scrubs the filter media surface, further removing any residual pollutants. The sound waves are then transmitted into the water through acoustically transparent gel 1105 within the elastic sheath 1104. This gel reduces sound wave energy loss, and its acoustic impedance is close to that of water, ensuring efficient transmission of the ultrasound waves into the water.

[0033] Example 3

[0034] See also Figures 1-8 , a V-type filter backwashing device based on ultrasound, also includes a plurality of vibration balls 13 mixed inside the supporting layer 6, and a vibration plate 12 is installed on the upper surface of the stainless steel filter plate 5.

[0035] Specifically, the vibration plate 12 includes a protective layer 1201 fixedly connected to the upper surface of the stainless steel filter plate 5, and the protective layer 1201 is provided with filter holes corresponding to the stainless steel filter plate 5. A plurality of arc-shaped covers 1202 are evenly fixedly connected to the protective layer 1201, and the inner cavity of the arc-shaped cover 1202 is fixedly connected to an elastic plate 1204, and the inner cavity of the elastic plate 1204 is inlaid with a magnetic block 1205.

[0036] The upper surface of the stainless steel filter plate 5 is isolated from the impact of cavitation bubbles by a protective layer 1201 (such as tungsten carbide, ceramic coating or elastic polymer coating) to avoid the instantaneous high pressure of up to thousands of atmospheres and microjets generated when the ultrasonic cavitation bubbles burst, which will produce high-frequency impact on the surface of the stainless steel filter plate 5. Long-term exposure may cause cavitation corrosion, similar to "the metal surface is continuously bombarded by micro-explosions", which manifests as pitting, pits and even penetrating holes on the surface, thereby affecting the strength of the stainless steel filter plate 5.

[0037] The arc-shaped cover 1202 is located directly above the protective cover 1101 and the diameters of the arc-shaped cover 1202 are the same. A plurality of water inlet holes 1203 are formed on the outer surface of the arc-shaped cover 1202 .

[0038] The interior of the arc cover 1202 is filled with water through the water inlet hole 1203. Since the arc cover 1202 is located directly above the sound-permeable gel 1105, the sound wave energy received by the water source inside the arc cover 1202 is the strongest. At this time, the cavitation bubbles generated by the water source in the arc cover 1202 will release high-intensity impact force when they burst, impacting the elastic plate 1204 and causing it to generate low-frequency vibration. The aperture of the water inlet hole 1203 is smaller than the quartz sand in the filter layer 7, avoiding accumulation and blockage caused by the entry of filter material. The elastic plate 1204 has good elasticity and corrosion resistance.

[0039] The vibrating ball 13 includes a lightweight sphere 1301 uniformly mixed inside the supporting layer 6. The lightweight sphere 1301 is a hollow sphere. The inner cavity of the lightweight sphere 1301 is movably connected to a magnetic block 2 1303. The magnetic block 2 1303 is spherical. The outer surface of the lightweight sphere 1301 is uniformly fixedly connected to a plurality of elastic rods 1302. The elastic rods 1302 are interspersed inside the supporting layer 6.

[0040] When the elastic plate 1204 vibrates, the magnetic force of the internal magnetic block 1205 and the magnetic block 2 1303 drives the lightweight sphere 1301 to vibrate as well. The lightweight sphere 1301 produces random rolling and collision under the combined action of the cavitation bubbles generated by the ultrasound and the elastic plate 1204. The lightweight sphere 1301 and the elastic rod 1302 on its outer surface reciprocate to collide with the large-grained quartz sand in the supporting layer 6. This physical impact cooperates with the ultrasonic cavitation effect and the air-water recoil to effectively destroy the pollutant aggregates in the gaps between the large-grained quartz sand, thereby improving the cleaning effect and helping the large-grained quartz sand to better remove stains.

[0041] Magnetic block 1205 is made of neodymium iron boron permanent magnets, which enable it to generate a strong adsorption force. Magnetic block 2 1303 is made of ferromagnetic material, which is easily magnetized by an external magnetic field. Because it is sensitive to the magnetic field generated by neodymium iron boron, magnetic block 2 1303 is effectively attracted to magnetic block 1205. When magnetic block 1205 moves due to the low-frequency vibration of elastic plate 1204, the strong magnetic force it generates is transmitted through space to magnetic block 2 1303, attracting magnetic block 1205 and moving with it. This allows for synchronized movement even without direct physical contact between the two.

[0042] The vibrating balls 13 are mixed in the supporting layer 6 and support the filter together. The size of the vibrating balls 13 is smaller than the coarse quartz sand in the supporting layer 6 and larger than the fine quartz sand in the filter layer 7, and they just fill the gaps in the supporting layer 6.

[0043] Working principle: The water to be treated flows evenly into the inner cavity of the filter tank 1 through the drainage pipe 4 pre-buried on the top of the filter tank 1. The drainage pipe 4 distributed along the filter tank 1 ensures the stability of the water inlet flow. The water flows from top to bottom through the filter material layer 7, the supporting layer 6 and the stainless steel filter plate 5. The filter material layer 7 intercepts pollutants such as suspended matter, colloids and microorganisms in the water by virtue of its pore structure to achieve water purification. On the one hand, the supporting layer 6 supports the filter material layer 7 to prevent loss, and on the other hand, it evenly distributes the water flow to avoid local overflow. The vacuum pump 3 is connected to the water collection tank 2 at the bottom of the filter tank 1 through a pipeline, and the water collection tank 2 is evacuated to form a local negative pressure environment. The negative pressure enhances the driving force of water flowing through the filter material layer 7, and increases the filtration speed under the premise of unchanged seepage diameter, so that pollutants are more efficiently adsorbed or retained by the filter material surface. The filtered clean water enters the water collection tank 2 through the aperture of the stainless steel filter plate 5 and is finally discharged through the pipeline.

[0044] The backwash process consists of three coordinated steps: air flushing, water flushing, and ultrasonic-assisted cleaning. When backwash is initiated, compressed air is injected into the filter media layer 7 through the air distribution holes 101 in the air and water distribution channel 9. The rising bubbles agitate the filter media, causing it to vibrate slightly. This initial loosening of mud balls and flocs on the surface occurs through friction between particles. Subsequently, backwash water is injected through the water distribution holes 10, flowing in the opposite direction of the filtration phase. The high-velocity water flow flushes the loosened contaminants into the drain trough 8 at the top of the filter tank 1, achieving the initial cleaning of the filter media achieved by conventional air-water backwashing. The ultrasonic cleaning element 11, fixed to the lower surface of the stainless steel filter plate 5, is then activated simultaneously. The ultrasonic transducer 1103 generates high-frequency vibrations of 20-100 kHz. This energy is transmitted to the water above the stainless steel filter plate 5 through the acoustically transparent gel 1105, triggering a cavitation effect. This disrupts the adsorption bonds between contaminants and the quartz sand surface of the filter media, dislodging organic matter, colloids, and other adhering matter. Simultaneously, shear forces directly scrub residual contaminants from the filter media surface.

[0045] The elastic plate 1204 in the arc-shaped cover 1202 is vibrated by the cavitation impact, driving the magnetic block 1205 to move synchronously, and driving the vibrating ball 13 in the supporting layer 6 through magnetic force. The magnetic block 2 1303 inside the lightweight sphere 1301 of the vibrating ball 13 interacts with the magnetic block 1205, causing the lightweight sphere to roll randomly in the gap of the supporting layer 6 and collide with the coarse quartz sand. The elastic rod 1302 on the outer surface reciprocates to hit the surface of the particles, destroying the pollutant agglomerates in the gaps between large particles of quartz sand.

[0046] The ultrasonic cavitation effect and air-water backwash form a multiple cleaning mechanism, in which the apertures of the water distribution holes 10 and the air distribution holes 101 are designed according to the backwash intensity to ensure that the air-water mixture is evenly distributed. The drainage trough 8 is located on the upper part of the filter 1 to quickly discharge the backwash wastewater to prevent secondary pollution. The double-layer filter structure controls the cleaning of two layers of filter media through independent drainage troughs 8 and air and water distribution channels 9, achieving double the filtration capacity under the same footprint and reducing processing costs. During the entire working process, the vacuum pump 3, ultrasonic transducer 1103 and vibration plate 12 work together to combine the mechanical loosening of traditional air-water backwash, the physical peeling of ultrasonic cavitation and the physical impact of the vibration ball 13, significantly improving the filter media cleaning efficiency, extending the filtration cycle, and ensuring the efficient and stable operation of the V-type filter.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A V-type filter backwashing device based on ultrasonic wave, characterized by: include: A filter tank (1), wherein a water collecting trough (2) is provided at the bottom of the inner cavity of the filter tank (1), a vacuum pump (3) is installed on the outer wall of the water collecting trough (2), a plurality of drainage pipes (4) are fixedly embedded in the upper part of the inner cavity of the filter tank (1), a stainless steel filter plate (5) is fixedly connected to the inner cavity of the filter tank (1), a supporting layer (6) is covered above the stainless steel filter plate (5), a filter material layer (7) is covered above the supporting layer (6), a drainage trough (8) is provided in the inner cavity of the filter tank (1), an air distribution channel (9) is provided in the inner cavity of the water collecting trough (2), a water distribution hole (10) is provided below the air distribution channel (9), an air distribution hole (101) is provided above the air distribution channel (9), and a plurality of vibration balls (13) are mixed inside the supporting layer (6); The ultrasonic cleaning component (11) comprises a plurality of protective covers (1101) fixedly connected to the lower surface of a stainless steel filter plate (5), wherein an ultrasonic transducer (1103) is fixedly connected to the bottom of the inner cavity of the protective cover (1101) and is in communication with the interior thereof, an elastic wrapping sleeve (1104) is fixedly connected to the upper end of the inner cavity of the stainless steel filter plate (5) and the protective cover (1101), and the inner cavity of the elastic wrapping sleeve (1104) is wrapped with a sound-transmitting gel (1105), and a vibration plate (12) is mounted on the upper surface of the stainless steel filter plate (5).

2. The ultrasonic-based V-type filter backwashing device according to claim 1, characterized in that: A damper (1102) is fixedly connected to the middle of the lower surface of the protective cover (1101), the lower end of the damper (1102) is fixedly connected to the bottom of the inner cavity of the filter tank (1), and the protective cover (1101) is fixed to the stainless steel filter plate (5) by welding.

3. The ultrasonic-based V-type filter backwashing device according to claim 1, characterized in that: The emitting end of the ultrasonic transducer (1103) abuts against the lower surface of the elastic wrapping sleeve (1104), and the elastic wrapping sleeve (1104) is made of a transparent material.

4. The ultrasonic-based V-type filter backwashing device according to claim 1, characterized in that: The vibration plate (12) comprises a protective layer (1201) fixedly connected to the upper surface of the stainless steel filter plate (5), the protective layer (1201) being provided with filter holes corresponding to the stainless steel filter plate (5), and a plurality of arc-shaped covers (1202) being evenly fixedly connected to the protective layer (1201).

5. The ultrasonic-based V-type filter backwashing device according to claim 4, characterized in that: The arc-shaped cover (1202) is located directly above the protective cover (1101) and the two have the same diameter. A plurality of water inlet holes (1203) are provided on the outer surface of the arc-shaped cover (1202).

6. The ultrasonic-based V-type filter backwashing device according to claim 5, characterized in that: The inner cavity of the arc-shaped cover (1202) is fixedly connected to an elastic plate (1204), and the inner cavity of the elastic plate (1204) is inlaid with a magnetic block 1 (1205).

7. The ultrasonic-based V-type filter backwashing device according to claim 1, characterized in that: The vibrating ball (13) comprises a lightweight sphere (1301) uniformly mixed inside the supporting layer (6), and the lightweight sphere (1301) is a sphere with a hollow interior.

8. The ultrasonic-based V-type filter backwashing device according to claim 7, characterized in that: The inner cavity of the lightweight sphere (1301) is movably connected to a second magnetic block (1303), and the second magnetic block (1303) is spherical.

9. The ultrasonic-based V-type filter backwashing device according to claim 8, characterized in that: A plurality of elastic rods (1302) are evenly and fixedly connected to the outer surface of the lightweight sphere (1301), and the elastic rods (1302) are interspersed and arranged inside the supporting layer (6).

10. The ultrasonic-based V-type filter backwashing device according to claim 1, characterized in that: The filter material layer (7) is composed of quartz sand, and the supporting layer (6) is composed of coarse quartz sand.

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