A filter assembly with self-maintenance function and an environmentally friendly dust collector

Abstract

The present invention relates to the technical field related to dust removal equipment, and discloses a filter assembly with self-maintenance function and an environmentally friendly dust collector, wherein the filter assembly comprises a dustproof shell and a barrel-shaped filter element arranged inside the dustproof shell, a purification ring cavity is formed between the filter element and the dustproof shell, the filter element is a plurality of annular filter cottons arranged at intervals, a detonation excitation ring is arranged between two adjacent filter cottons, a gas-liquid dust removal part is arranged in the inner cavity of the filter element, the gas-liquid dust removal part comprises a central tube, a jet disk is sleeved on the outer wall of the central tube, a dust reduction cylinder is connected to the end of the filter element, a spray disk is sleeved on the outer wall of the central tube, the central tube is connected to a high-pressure gas generator and a dust reduction pump, the high-pressure gas generator is connected to the jet disk through a pipeline, and the high-pressure gas generator is connected to the purification ring cavity through a pipeline, the dust reduction pump is connected to the spray disk through a pipeline, the detonation excitation ring generates high-frequency vibration, dust can quickly separate from the filter cotton, and the high-pressure gas generator generates high-pressure gas to blow dust into the inner cavity of the barrel-shaped filter element.

Description

Technical Field

[0001] The present invention belongs to the technical field related to dust removal equipment, and more specifically, particularly relates to a filter assembly with a self-maintenance function and an environmentally friendly dust collector. Background Art

[0002] The existing dust collector includes a power kit, a shell and a filter kit arranged in the shell. The filter kit usually includes a filter element. After long-term use, the filter element itself will accumulate a lot of dust and bacteria, and the filter kit needs to be cleaned, replaced and maintained regularly.

[0003] In order to reduce manual operation and improve the ability of automatic maintenance, the prior art proposes a solution to clean the air filter using high-pressure gas, for example: the automatic cleaning system, blockage identification and automatic cleaning method of the air filter in Chinese patent CN115608079A. The automatic cleaning of the filter assembly using the above solution still has the following technical problems:

[0004] The strong convection cleaning of the filter kit using compressed air will be hindered by the filter kit itself. When the thickness of the filter kit is too large, the flow rate of the airflow will decrease when passing through the filter kit, and it may even be difficult to penetrate the filter kit, which greatly reduces the cleaning effect.

[0005] When using compressed air to clean the filter kit, dust mixes with air and easily leaks out to the outside, causing air pollution. Therefore, how to reduce dust is also a problem we need to pay attention to.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a filter component and an environmentally friendly dust collector with self-maintenance function are provided, in order to achieve a more practical purpose. Summary of the invention

[0007] The present invention provides a filter assembly and an environmentally friendly dust collector with a self-maintenance function, which are used to overcome the above-mentioned defects in the prior art.

[0008] The purpose and efficacy of a filter assembly and an environmentally friendly dust collector with a self-maintenance function of the present invention are achieved by the following specific technical means: comprising a dustproof shell and a barrel-shaped filter element arranged inside the dustproof shell, a purification annular cavity is formed between the filter element and the dustproof shell, the filter element is a plurality of annular filter cottons arranged at intervals, a detonation excitation ring is arranged between two adjacent filter cottons, a gas-liquid dust removal part is arranged in the inner cavity of the filter element, the gas-liquid dust removal part comprises a central tube, the outer wall of the central tube is sleeved with a jet disk, the jet disk has a jet port for jetting toward the axial direction of the filter element, the end of the filter element is connected with a dust reduction cylinder, the dust outlet of the dust reduction cylinder passes through the dustproof shell, the outer wall of the central tube is sleeved with a spray disk, the spray disk has a liquid spray port for spraying liquid toward the inner cavity of the dust reduction cylinder, the central tube is connected with a high-pressure gas generator and a dust reduction pump, the high-pressure gas generator is connected with the jet disk through a pipeline, and the high-pressure gas generator is connected with the purification annular cavity through a pipeline, and the dust reduction pump is connected with the spray disk through a pipeline.

[0009] According to a further technical solution, the detonation excitation ring includes two relatively arranged vibration rings, which directly abut against the adjacent annular filter cotton. An elastic support member is arranged between the two vibration rings to form an active gap between the two vibration rings, and a high-frequency vibration annular piezoelectric piece is inserted into the active gap.

[0010] A further technical solution is that the high-frequency vibration annular piezoelectric piece includes an inner ring portion and an outer ring portion, the outer ring portion is thicker than the inner ring portion, the outer ring portion directly abuts against the two vibration rings, the inner ring portion is suspended in the active gap, the inner ring portion is provided with a plurality of strip grooves extending radially along the inner ring portion for enhancing the vibration amplitude of the inner ring portion on its circumference, and the vibration ring is provided with a plurality of ventilation holes near the strip grooves.

[0011] A further technical solution is that an arc-shaped enclosing plate that can move at high speed toward the filter element is arranged in the purification ring cavity, the arc-shaped enclosing plate encloses the filter element, and a high-pressure sealing cavity is formed between the arc-shaped enclosing plate and the inner wall of the dust-proof shell, the arc-shaped enclosing plate and the dust-proof shell are connected by a limiting assembly, and the high-pressure sealing cavity and the purification ring cavity are connected by a one-way valve for intake of air into the high-pressure sealing cavity.

[0012] A further technical solution is that the two vibration rings have a plurality of first protrusions on one side opposite to the other, an excitation sheet capable of radial movement is arranged in the movable gap, and the two side surfaces of the excitation sheet have a plurality of second protrusions capable of contacting the first protrusions, and the excitation sheet extends toward the purification ring cavity and is connected to the inner wall of the arc-shaped enclosing plate.

[0013] A further technical solution is that the jet disk includes a first conical outer shell and a first elastic base, the inner wall of the first conical outer shell has a first inner conical surface, the outer side surface of the first elastic base is a first outer conical surface, the first inner conical surface cooperates with the first outer conical surface, a first gas space is formed between the first conical outer shell and the first elastic base, and the center tube has an air hole connected to the first gas space.

[0014] A further technical solution is that the spray disc includes a second conical outer shell and a second elastic base, a second gas space is formed between the second conical outer shell and the second elastic base, the inner wall of the second conical outer shell has a second inner conical surface, the second elastic base has a second outer conical surface matching the second inner conical surface, a liquid channel is opened on the second elastic base, the second inner conical surface blocks the opening of the liquid channel, and a liquid infusion tube connected to the liquid channel passes through the central tube.

[0015] A further technical solution is that a sealing ring is installed in the dust outlet of the dust suppression cylinder, and a sealing door is hinged on the inner wall of the dust suppression cylinder. The sealing door can resist the sealing ring to block the dust outlet of the dust suppression cylinder, and a telescopic rod is hinged on the inner wall of the dust suppression cylinder, and the end of the telescopic rod is hinged to the sealing door.

[0016] A further technical solution is that a rotating cylinder is sleeved on the outside of the central tube, a motor is installed on the rotating cylinder, the shaft of the motor is fixedly connected to the central tube, the outer wall of the rotating cylinder is connected to the jet disk and the spray disk, and the outer wall of the rotating cylinder is also circumferentially distributed with ultraviolet disinfection devices.

[0017] An environmentally friendly dust collector comprises the above-mentioned filter assembly with self-maintenance function, the environmentally friendly dust collector comprises an air inlet assembly and an air outlet assembly, the air inlet assembly and the air outlet assembly are respectively connected to the two ends of the dustproof shell, the cavity of the air inlet assembly is connected to the inner cavity of the filter element, and the inner cavity of the air outlet assembly is connected to the purification ring cavity.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, a filter component with a self-maintenance function is provided with a special filter element, the filter element includes a plurality of annular filter cottons arranged at intervals, and a detonation excitation ring is arranged in the gap between two adjacent filter cottons. The detonation excitation ring generates high-frequency vibrations to drive the filter cotton itself to generate high-frequency vibrations so that dust can quickly break away from the filter cotton, and a high-pressure gas generator generates high-pressure gas, the gas is blown to the outside of the filter cotton, and the dust is blown into the inner cavity of the barrel-shaped filter element, thereby realizing the function of efficiently cleaning the dust. Since the present invention adopts multiple groups of detonation excitation rings to be embedded in the filter element at intervals, the distance between two adjacent detonation excitation rings is small, and the vibration can be evenly transmitted to the filter element itself, thereby reducing vibration attenuation and improving the dust cleaning effect.

[0020] In a filter assembly with a self-maintenance function of the present invention, a gas-liquid dust removal part is arranged in the inner cavity of the filter element, and the gas-liquid dust removal part is provided with a jet disk and a spray disk. The high-pressure gas sprayed by the jet disk takes away the dust in the inner cavity of the barrel-shaped filter element, and the mixture of gas and dust enters the dust reduction cylinder. The spray disk located at the opening of the dust reduction cylinder sprays water mist, and the mixture of gas and dust mixes with the water mist. The dust is dissolved in the water and accumulated in the dust reduction cylinder under the action of gravity and discharged to the outside, so as to reduce the risk of dust leakage into the outside air.

[0021] In the present invention, a detonation excitation ring of a filter component with a self-maintenance function includes a high-frequency vibration annular piezoelectric piece, and the high-frequency vibration annular piezoelectric piece includes an inner ring portion and an outer ring portion, a plurality of strip grooves are provided on the circumference of the inner ring portion, a plurality of ventilation holes are provided at the position of the vibration ring close to the strip grooves, and the outer ring portion has the effect of directly transmitting vibration to the filter cotton. Since the inner ring portion itself has a plurality of strip grooves for enhancing the amplitude of vibration, and since the thickness of the inner ring portion is relatively small and the inertia is small, it is easier to produce larger amplitude vibrations. The inner ring portion greatly vibrates in the active gap, and the air in the active gap is affected by the inner ring portion. The air exchanges high frequency with the gas in the filter cotton through the ventilation holes on the vibration ring, thereby further increasing the speed at which dust leaves the filter cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the environmentally friendly dust collector in the present invention;

[0023] Figure 2 is a partial cross-sectional view of the dustproof housing in the present invention;

[0024] Figure 3 It is a structural schematic diagram of the filter element in the present invention;

[0025] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 5 It is a schematic diagram of the structure of the high-frequency vibration annular piezoelectric piece in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the gas-liquid dust removal part of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the jet disk in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the spray disc in the present invention;

[0030] Fig. 9 It is an enlarged schematic diagram of the dust suppression cylinder structure in the present invention;

[0031] Fig.10 yes Figure 2 Cross-sectional view at AA in the middle.

[0032] Description of reference numerals:

[0033] 10 dustproof housing, 11 filter element, 12 purification ring cavity, 13 filter cotton, 14 detonation excitation ring, 15 gas-liquid dust removal part, 16 center tube, 17 jet disk, 18 dust suppression cylinder, 19 spray disk, 20 vibration ring, 21 inner ring part, 22 outer ring part, 23 movable gap, 24 strip groove, 26 arc-shaped surrounding plate, 27 high-pressure sealing cavity, 28 limit assembly, 29 one-way valve, 30 first conical housing, 31 first elastic base, 32 first inner cone surface, 33 first outer cone surface, 34 first gas space, 35 second conical housing, 36 second elastic base, 37 second gas space, 38 second inner cone surface, 39 second outer cone surface, 40 liquid channel, 41 sealing ring, 42 sealing door, 43 telescopic rod, 44 dust outlet, 45 air inlet assembly, 46 air outlet assembly. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment 1: Refer to the attached Figure 1 To Attachment Fig.10 The present invention provides a filter assembly with a self-maintenance function, such as Figure 2 As shown, it includes a dustproof housing 10 and a barrel-shaped filter element 11 disposed inside the dustproof housing 10, and a purification annular cavity 12 is formed between the filter element 11 and the dustproof housing 10. Figure 3 As shown, the filter element 11 is a plurality of annular filter cottons 13 arranged at intervals, and a detonation excitation ring 14 is arranged between two adjacent filter cottons 13. Figure 6 As shown, a gas-liquid dust removal unit 15 is provided in the inner cavity of the filter element 11, and the gas-liquid dust removal unit 15 includes a central tube 16, and a jet disk 17 is provided on the outer wall of the central tube 16. The jet disk 17 has a jet port for jetting toward the axial direction of the filter element 11, as shown in FIG. Figure 2 As shown, the end of the filter element 11 is connected to a dust suppression cylinder 18, and the dust outlet 44 of the dust suppression cylinder 18 passes through the dustproof shell 10. The outer wall of the central tube 16 is covered with a spray disk 19, and the spray disk 19 has a liquid spray port for spraying liquid toward the inner cavity of the dust suppression cylinder 18. The central tube 16 is connected to a high-pressure gas generator and a dust suppression pump. The high-pressure gas generator is connected to the spray disk 17 through a pipeline, and the high-pressure gas generator is connected to the purification ring cavity 12 through a pipeline, and the dust suppression pump is connected to the spray disk 19 through a pipeline.

[0038] In this embodiment, the gas enters the inner cavity of the filter element 11, and after the filtering effect of the filter element 11, the gas enters the purification ring cavity 12 and is discharged, completing the purification of the air. After a certain period of time, the filter element 11 will accumulate a lot of dust, which affects the purification effect. In order to automatically purify the filter element 11, the detonation excitation ring 14 located between the filter cottons 13 generates high-frequency vibrations, driving the filter cottons 13 themselves to generate high-frequency vibrations, so that the dust can quickly separate from the filter cottons 13, and the high-pressure gas generator replenishes high-pressure gas into the purification ring cavity 12 through a pipeline, and the gas The dust is blown toward the filter cotton 13 into the inner cavity of the barrel-shaped filter element 11, the gas-liquid dust removal part 15 is started, and the high-pressure gas generator replenishes high-pressure gas to the spray disk 17. The high-pressure gas is sprayed out through the jet port and takes away the dust in the inner cavity of the barrel-shaped filter element 11. The mixture of gas and dust enters the dust reduction cylinder 18, and the dust reduction pump replenishes liquid to the spray disk 19 through the pipeline, and sprays water mist into the dust reduction cylinder 18 through the liquid spray port. The mixture of gas and dust mixes with the water mist, and the dust is dissolved in the water and accumulated in the dust reduction cylinder 18 under the action of gravity and discharged to the outside.

[0039] Preferably, Figure 4 As shown, the detonation excitation ring 14 includes two relatively arranged vibration rings 20, and the vibration ring 20 directly abuts against the adjacent annular filter cotton 13. An elastic support member is arranged between the two vibration rings 20 to form an active gap 23 between the two vibration rings 20, and a high-frequency vibration annular piezoelectric piece is inserted into the active gap 23.

[0040] In this embodiment, the power supply unit drives the high-frequency vibration annular piezoelectric piece to generate high-frequency vibration, and the high-frequency vibration is transmitted to the vibration ring 20. The vibration ring 20 transmits the vibration to the adjacent filter cotton 13, and the high-frequency vibration is used to quickly separate the dust from the filter cotton 13.

[0041] Preferably, Figure 4-5 As shown, the high-frequency vibration annular piezoelectric sheet includes an inner ring portion 21 and an outer ring portion 22. The thickness of the outer ring portion 22 is greater than that of the inner ring portion 21. The outer ring portion 22 directly abuts against the two vibration rings 20. The inner ring portion 21 is suspended in the active gap 23. The inner ring portion 21 is provided with a plurality of strip grooves 24 extending radially along the inner ring portion 21 for enhancing the vibration amplitude of the inner ring portion 21. The vibration ring 20 is provided with a plurality of ventilation holes near the strip grooves 24.

[0042] In this embodiment, the outer ring portion 22 has the effect of transmitting vibration. Since the inner ring portion 21 itself has a number of strip grooves 24 for enhancing the amplitude of vibration, and since the inner ring portion 21 is thinner in thickness and smaller in inertia, it is easier to produce larger amplitude vibrations. The inner ring portion 21 greatly vibrates in the active gap 23. The air in the active gap 23 is affected by the inner ring portion 21. The air exchanges high frequency with the gas in the filter cotton 13 through the air holes on the vibration ring 20, further increasing the speed at which dust leaves the filter cotton 13.

[0043] Preferably, Fig.10 As shown, an arc-shaped enclosing plate 26 capable of moving at high speed toward the filter element 11 is provided in the purification annular cavity 12, the arc-shaped enclosing plate 26 encloses the filter element 11, and a high-pressure sealing cavity 27 is formed between the arc-shaped enclosing plate 26 and the inner wall of the dustproof housing 10, the arc-shaped enclosing plate 26 and the dustproof housing 10 are connected by a limiting assembly 28, and the high-pressure sealing cavity 27 and the purification annular cavity 12 are connected by a one-way valve 29 for air intake into the high-pressure sealing cavity 27.

[0044] In this embodiment, the high-pressure gas in the purification ring cavity 12 enters the high-pressure sealing cavity 27 through the one-way valve 29. When the pressure exceeds the set value, the limit assembly 28 is opened and the arc-shaped surrounding plate 26 is unlocked. Driven by the high pressure, the arc-shaped surrounding plate 26 hits the outer surface of the filter element 11 at high speed, providing a strong impact to the filter element 11, so as to facilitate the dust to leave the filter element 11.

[0045] Preferably, the two vibration rings 20 have a plurality of first protrusions on one side opposite to the other, and a radially movable excitation plate is arranged in the movable gap 23. The two side surfaces of the excitation plate have a plurality of second protrusions that can contact the first protrusions. The excitation plate extends toward the purification ring cavity 12 and is connected to the inner wall of the arc-shaped enclosing plate 26.

[0046] In this embodiment, when the arc-shaped surrounding plate 26 impacts the outer surface of the filter element 11, the arc-shaped surrounding plate 26 drives the excitation plate to move rapidly, and the second protrusion of the excitation plate hits the first protrusion on the vibration ring 20, thereby providing vibration for the vibration ring.

[0047] Preferably, Figure 7 As shown, the jet disk 17 includes a first conical outer shell 30 and a first elastic base 31, the inner wall of the first conical outer shell 30 has a first inner conical surface 32, the outer side surface of the first elastic base 31 is a first outer conical surface 33, the first inner conical surface 32 cooperates with the first outer conical surface 33, and a first gas space 34 is formed between the first conical outer shell 30 and the first elastic base 31, and the central tube 16 has an air hole connected to the first gas space 34.

[0048] In this embodiment, the high-pressure gas generator fills the central tube 16 with high-pressure gas, and the high-pressure gas in the central tube 16 enters the first gas space 34 through the air holes. When the gas pressure exceeds the threshold, the first elastic base 31 itself is deformed, and the first conical shell 30 and the first elastic base 31 are separated from each other, so that the first outer cone surface 33 and the first inner cone surface 32 are separated from each other, and the high-pressure gas is sprayed toward the inner cavity of the filter element 11 through the annular gap between the first outer cone surface 33 and the first inner cone surface 32.

[0049] Preferably, Figure 8 As shown, the spray disc 19 includes a second conical shell 35 and a second elastic base 36, a second gas space 37 is formed between the second conical shell 35 and the second elastic base 36, the inner wall of the second conical shell 35 has a second inner conical surface 38, the second elastic base 36 has a second outer conical surface 39 matching the second inner conical surface 38, a liquid channel 40 is opened on the second elastic base 36, the second inner conical surface 38 blocks the opening of the liquid channel 40, and a liquid infusion tube connected to the liquid channel 40 passes through the central tube 16.

[0050] In this embodiment, high-pressure gas flows into the second gas space 37. When the gas pressure exceeds the threshold, the second inner cone 38 and the second outer cone 39 move away from each other to form an annular gap. High-speed airflow passes through the annular gap, and negative pressure is formed near the high-speed airflow to suck out water in the liquid channel 40. The gas and liquid mix to form water mist, and the water mist mixes with dust to achieve a dust reduction effect.

[0051] Preferably, Fig. 9 As shown, a sealing ring 41 is installed in the dust outlet 44 of the dust suppression cylinder 18, and a sealing door 42 is hinged on the inner wall of the dust suppression cylinder 18. The sealing door 42 can resist the sealing ring 41 to block the dust outlet 44 of the dust suppression cylinder 18. A telescopic rod 43 is hinged on the inner wall of the dust suppression cylinder 18, and the end of the telescopic rod 43 is hinged to the sealing door 42.

[0052] In this embodiment, during daily air purification of the device, the telescopic rod 43 drives the sealing door 42 to seal the dust removal port; when the filter element 11 needs to be dusted, the telescopic rod 43 pushes the sealing door 42 to open the dust removal port.

[0053] Preferably, the central tube 16 is covered with a rotating cylinder, a motor is installed on the rotating cylinder, the shaft of the motor is fixedly connected to the central tube 16, the outer wall of the rotating cylinder is connected to the jet disk 17 and the spray disk 19, and the outer wall of the rotating cylinder is also circumferentially distributed with ultraviolet disinfection devices.

[0054] In this embodiment, when the mixture of air and dust flows in the inner cavity of the filter element 11, the motor drives the rotating drum and the ultraviolet disinfection device to disinfect the mixture of air and dust.

[0055] Embodiment 2: An environmentally friendly dust collector, such as Figure 1-Figure 2 As shown, including the above-mentioned filter assembly with self-maintenance function, the environmentally friendly dust collector includes an air inlet assembly 45 and an air outlet assembly 46, the air inlet assembly 45 and the air outlet assembly 46 are respectively connected to the two ends of the dustproof shell 10, the cavity of the air inlet assembly 45 is connected to the inner cavity of the filter element 11, and the inner cavity of the air outlet assembly 46 is connected to the purification ring cavity 12.

[0056] Specific use of the present invention:

[0057] First, the air purification process:

[0058] The gas enters the inner cavity of the filter element 11 through the air inlet assembly 45, and after being filtered by the filter element 11, the gas enters the purification ring cavity 12 and is discharged through the air outlet assembly 46, thereby completing the purification of the air.

[0059] Second, filter element 11 self-maintenance:

[0060] The detonation excitation ring 14 located between the filter cottons 13 generates high-frequency vibrations, driving the filter cotton 13 itself to generate high-frequency vibrations so that the dust can quickly break away from the filter cotton 13, and the high-pressure gas generator replenishes high-pressure gas into the purification ring cavity 12 through a pipeline, and the gas blows toward the filter cotton 13 to blow the dust into the inner cavity of the barrel-shaped filter element 11, and the gas-liquid dust removal unit 15 is started, and the high-pressure gas generator replenishes high-pressure gas to the jet disk 17, and the high-pressure gas is ejected through the jet port and takes away the dust in the inner cavity of the barrel-shaped filter element 11, and the mixture of gas and dust enters the dust reduction cylinder 18, and the dust reduction pump replenishes liquid to the spray disk 19 through a pipeline, and sprays water mist into the dust reduction cylinder 18 through the liquid spray port, and the mixture of gas and dust mixes with the water mist, and the dust is dissolved in the water and accumulates in the dust reduction cylinder 18 under the action of gravity and is discharged to the outside.

[0061] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A filter assembly with a self-maintenance function, comprising a dustproof housing and a barrel-shaped filter element arranged inside the dustproof housing, characterized in that: The filter element is provided with a plurality of annular filter cottons arranged at intervals, a detonation excitation ring is provided between two adjacent filter cottons, a gas-liquid dust removal part is provided in the inner cavity of the filter element, and the gas-liquid dust removal part comprises a central tube, the outer wall of the central tube is provided with a jet disk, the jet disk has a jet port for jetting along the axial direction of the filter element, the end of the filter element is connected with a dust suppression cylinder, the dust outlet of the dust suppression cylinder passes through the dust prevention shell, the outer wall of the central tube is provided with a spray disk, the spray disk has a liquid spray port for spraying liquid toward the inner cavity of the dust suppression cylinder, the central tube is connected with a high-pressure gas generator and a dust suppression pump, the high-pressure gas generator is connected with the jet disk through a pipeline, and the high-pressure gas generator is connected with the purification annular cavity through a pipeline, and the dust suppression pump is connected with the spray disk through a pipeline; The detonation excitation ring includes two vibration rings arranged opposite to each other, the vibration rings directly abut against the adjacent annular filter cotton, an elastic support is arranged between the two vibration rings to form an active gap between the two vibration rings, and a high-frequency vibration annular piezoelectric piece is inserted into the active gap; The high-frequency vibration annular piezoelectric sheet comprises an inner ring portion and an outer ring portion, the outer ring portion is thicker than the inner ring portion, the outer ring portion directly abuts against the two vibration rings, the inner ring portion is suspended in the active gap, the inner ring portion is provided with a plurality of strip grooves extending radially along the inner ring portion for enhancing the vibration amplitude of the inner ring portion, and the vibration ring is provided with a plurality of vent holes at a position close to the strip grooves; An arc-shaped surrounding plate capable of high-speed movement toward the filter element is arranged in the purification ring cavity, the arc-shaped surrounding plate surrounds the filter element, and a high-pressure sealing cavity is formed between the arc-shaped surrounding plate and the inner wall of the dustproof housing, the arc-shaped surrounding plate and the dustproof housing are connected via a limiter assembly, and the high-pressure sealing cavity and the purification ring cavity are connected via a one-way valve for air intake toward the high-pressure sealing cavity; The two vibration rings have a plurality of first protrusions on one side opposite to the other, and a radially movable excitation sheet is arranged in the movable gap. The two side surfaces of the excitation sheet have a plurality of second protrusions that can contact the first protrusions. The excitation sheet extends toward the purification ring cavity and is connected to the inner wall of the arc-shaped surrounding plate.

2. A filter assembly with self-maintenance function according to claim 1, characterized in that: The jet disk includes a first conical shell and a first elastic base. The inner wall of the first conical shell has a first inner conical surface. The outer side surface of the first elastic base is a first outer conical surface. The first inner conical surface matches the first outer conical surface. A first gas space is formed between the first conical shell and the first elastic base. The center tube has an air hole connected to the first gas space.

3. The filter assembly with self-maintenance function according to claim 1, characterized in that: The spray disc includes a second conical shell and a second elastic base, a second gas space is formed between the second conical shell and the second elastic base, the inner wall of the second conical shell has a second inner conical surface, the second elastic base has a second outer conical surface matching the second inner conical surface, a liquid channel is opened on the second elastic base, the second inner conical surface blocks the opening of the liquid channel, and a liquid infusion tube connected to the liquid channel passes through the central tube.

4. The filter assembly with self-maintenance function according to claim 1, characterized in that: A sealing ring is installed in the dust outlet of the dust suppression cylinder, and a sealing door is hinged on the inner wall of the dust suppression cylinder. The sealing door can resist the sealing ring to block the dust outlet of the dust suppression cylinder. A telescopic rod is hinged on the inner wall of the dust suppression cylinder, and the end of the telescopic rod is hinged to the sealing door.

5. The filter assembly with self-maintenance function according to claim 1, characterized in that: The central tube is covered with a rotating cylinder, a motor is installed on the rotating cylinder, the shaft of the motor is fixedly connected to the central tube, the outer wall of the rotating cylinder is connected to the jet disk and the spray disk, and the outer wall of the rotating cylinder is also circumferentially distributed with ultraviolet disinfection devices.

6. An environmentally friendly dust collector, comprising a filter assembly with a self-maintenance function as claimed in any one of claims 1 to 5, characterized in that: The environmentally friendly dust collector includes an air inlet assembly and an air outlet assembly, wherein the air inlet assembly and the air outlet assembly are respectively connected to two ends of the dustproof housing, the cavity of the air inlet assembly is connected to the inner cavity of the filter element, and the inner cavity of the air outlet assembly is connected to the purification ring cavity.

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