Filter element with self-cleaning function

Abstract

The invention discloses a filter element with a self-cleaning function, and relates to the technical field of air filtration. A filter element with a self-cleaning function comprises a filter element assembly, the filter element assembly comprises a first filter element mechanism, the first filter element mechanism comprises a first filter element, and the two ends of the first filter element are fixedly connected with first element bases respectively; the filter element assembly further comprises a second filter element mechanism, the second filter element mechanism comprises a second filter element, and the two ends of the second filter element are fixedly connected with second element bases respectively. A brush mechanism is arranged between the first filter element mechanism and the second filter element mechanism and comprises a base plate, the two ends of the base plate are fixedly connected with dust storage bases respectively, the dust storage bases are filled with dust sticking glue, one side of the base plate is fixedly connected with a first bristle mechanism, and the other side of the base plate is fixedly connected with a second bristle mechanism; an air pump mechanism is arranged at the bottom of the filter element assembly; according to the filter element with the self-cleaning function, produced clean gas serves as a blowback gas source, and the protection performance of the first filter element mechanism is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air filtration, in particular to a filter element with self-cleaning function. BACKGROUND

[0002] The filter element separates solid particles in liquid or gas, or fully contacts different material components to accelerate reaction time, which can protect the normal operation of equipment or the cleanliness of air. When the fluid enters the filter element with a certain specification filter screen, the impurities are blocked, and the clean fluid flows out of the filter element. The liquid filter element cleans the contaminated liquid to the state required for production and life, that is, the liquid reaches a certain degree of cleanliness. The air filter element cleans the contaminated air to the state required for production and life, that is, the air reaches a certain degree of cleanliness.

[0003] In the fields of industrial dust removal, air purification, liquid filtration, etc., the filter element as the core component bears the role of intercepting pollutants. The core problem of traditional filter elements is that the surface and pores of the filter material are easily blocked by dust, oil sludge, fibers and other pollutants, resulting in rising filtration resistance, decreasing efficiency, frequent disassembly and cleaning or replacement, and high maintenance cost.

[0004] The patent with publication number CN110523150A discloses an energy-saving easy-to-clean filter element, which comprises a base, a filter element body, an outer cylinder, an inner cylinder and a top seat. A gas cylinder is embedded in the middle of the top seat. A piston block is slidably and sealingly connected in the gas cylinder. A driving mechanism for driving the piston block to move up and down is embedded in the upper end of the gas cylinder. The gas cylinder is in communication with the outside through a one-way air inlet channel. The inner cylinder is composed of a plurality of fixed pipes arranged in an annular array and arranged side by side, and an arc-shaped mesh plate fixed between adjacent fixed pipes. A one-way air outlet hole is arranged on the side wall of the fixed pipe. The upper end of the fixed pipe is in communication with the inside of the gas cylinder. By setting the driving mechanism, the piston block and the gas cylinder, external gas can be continuously squeezed into the fixed pipe by the driving mechanism, and then discharged through the one-way air outlet hole. Since the one-way air outlet hole is located inside the filter element body and directly opposite the filter element body, dust can be blown away more accurately, which not only improves the cleaning effect of the filter element, but also greatly reduces energy waste.

[0005] In the above technical solution, compressed air is used to blow back the surface of the filter material to strip off loose particles. However, this technology has limited effect on removing sticky pollutants such as resin, oil mist and submicron particles stuck in the filter holes, and relies on external air source, which has problems such as high energy consumption, insufficient cleanliness of backflushing gas flow leading to secondary pollution, etc.

[0006] Therefore, there is an urgent need for a filter element with self-cleaning function to solve the above problems. SUMMARY

[0007] The filter core with the self-cleaning function aims to solve the problems in the background.

[0008] To achieve the above object, the application provides the following technical scheme: a filter core with a self-cleaning function, comprising a filter core assembly, the filter core assembly comprising a first filter core mechanism, the first filter core mechanism comprising a first filter core, both ends of the first filter core being fixedly connected with first core seats respectively;

[0009] The filter core assembly further comprises a second filter core mechanism sleeved outside the first filter core mechanism, the second filter core mechanism comprising a second filter core, both ends of the second filter core being fixedly connected with second core seats respectively;

[0010] A rotatable brush mechanism is arranged between the first filter core mechanism and the second filter core mechanism, the brush mechanism comprising a spiral base plate, both ends of the base plate being fixedly connected with dust storage seats adapted to be inserted between the first core seats and the second core seats respectively, the dust storage seats being filled with dust-sticking glue, a middle surface of the base plate towards the first filter core mechanism being fixedly connected with a first brush mechanism attached to the first filter core, a middle surface of the base plate towards the second filter core mechanism being fixedly connected with a second brush mechanism attached to the second filter core;

[0011] A gas pump mechanism is arranged at the bottom of the filter core assembly.

[0012] An outer cover mechanism is arranged outside the filter core assembly.

[0013] As a preferred technical scheme of the application, edges of the base plate extend out of the first brush mechanism and the second brush mechanism, and dust guide grooves are arranged at both sides of the edges.

[0014] As a preferred technical scheme of the application, the first brush mechanism is composed of a first brush assembly.

[0015] The first brush assembly comprises a first root brush fixedly connected with the base plate.

[0016] An intermediate brush is fixedly connected with one end of the first root brush away from the base plate, and a threaded brush cover is fixedly connected with an outer side of the intermediate brush.

[0017] An inclined staggered tip brush is fixedly connected with one end of the intermediate brush away from the first root brush.

[0018] As a preferred technical scheme of the application, the second brush mechanism is composed of a second brush assembly.

[0019] The second brush assembly comprises a second root brush fixedly connected with the base plate, a hair wire is fixedly connected with one end of the second root brush away from the base plate, and one end of the hair wire away from the second root brush is smooth.

[0020] As a preferred technical scheme of the present application, the first filter core mechanism is provided with a gas guiding mechanism, which comprises two symmetrical gas plate assemblies, and the two gas plate assemblies are respectively arranged at two ends of the first filter core mechanism;

[0021] Each of the gas plate assemblies comprises a circular plate fixedly connected with a first core seat, an inner surface of the circular plate is uniformly and equidistantly provided with a sealing groove, an outer surface of the circular plate is uniformly and equidistantly provided with a gas passage communicating with the sealing groove, one end of the gas passage towards the sealing groove is inwardly recessed, an inner bottom surface of the sealing groove is fixedly connected with a limiting rod, and an end portion of the limiting rod is fixedly connected with a baffle;

[0022] A connecting rod assembly is arranged between the two gas plate assemblies, the connecting rod assembly comprises a rod head, two ends of the rod head are respectively fixedly connected with connecting rods which are adaptively and insertingly connected with the sealing grooves, and the limiting rod penetrates the connecting rods.

[0023] The gas pump mechanism comprises a gas pump, and a first gas pipe is fixedly and communicatively connected to a side of the gas pump;

[0024] An installation cylinder is fixedly installed between the gas pump and the second core seat below.

[0025] An air flow fan which is movably and insertingly connected in the installation cylinder through a bearing is connected to an output end of the gas pump, and an upper end of the air flow fan is fixedly connected with a dust storage seat below.

[0026] The cover mechanism comprises a top plate above the filter core assembly and a bottom plate below the filter core assembly, and a plurality of gratings are fixedly and equidistantly connected between the top plate and the bottom plate;

[0027] The top plate is fixedly connected with the first filter core above and the second filter core above, and a gas hole opposite to the gas plate assembly is formed in a middle portion of a surface of the top plate;

[0028] The bottom plate is fixedly sleeved with the installation cylinder.

[0029] A gas chamber mechanism is arranged at a side of the cover mechanism, the gas chamber mechanism comprises a gas chamber, a second gas pipe is fixedly and communicatively connected to a side of the gas chamber and connected with the first gas pipe, a sensor is fixedly connected to an upper portion of the gas chamber, a third gas pipe is fixedly and communicatively connected to a lower portion of the gas chamber, one end of the third gas pipe away from the gas chamber is fixedly and communicatively connected with an annular gas cover, and the gas cover covers an outer ring of the gas hole.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] (1) A filter element with self-cleaning function, by injecting high-pressure airflow into the filter element assembly, realizing pulse back flushing, on the one hand, blowing off the impurities attached to the first filter mechanism and the second filter mechanism on one side, blocking the first filter and the second filter, on the other hand, through the pulse effect, the loose dust on the surface of the first filter and the second filter is shaken off, thereby reducing the hard cleaning required by the first filter mechanism and the second filter mechanism, improving the service life of the first filter mechanism and the second filter mechanism.

[0032] (2) A filter element with self-cleaning function, through the annular gas cover, the small part of clean gas produced at the outlet end of the upper part of the filter element assembly is collected in real time, and after buffering in the gas warehouse, it is used as a back flushing gas source, completely avoiding the secondary pollution risk that the traditional external gas source such as compressed air may carry oil stains, rust, etc., the cleanliness of the back flushing gas is improved compared with the external gas source, the chemical corrosion rate of the first filter mechanism is reduced, and the protection performance of the first filter mechanism is improved.

[0033] (3) A filter element with self-cleaning function, when the load is low, the back flushing frequency is automatically reduced to avoid excessive cleaning and cause damage to the first filter mechanism and the second filter mechanism; when the load is high, the back flushing frequency is automatically increased to ensure that the first filter mechanism and the second filter mechanism always maintain the initial filtering resistance, and the pulse back flushing frequency is self-adaptively adjusted to improve the intelligent dynamic performance of self-cleaning.

[0034] (4) A filter element with self-cleaning function, the brush mechanism discards the traditional motor driving mode and directly uses the high-pressure pulse airflow output by the air pump to impact the blades of the airflow fan, converting part of the back flushing airflow kinetic energy into the rotating power of the brush mechanism, compared with electric driving, the power consumption of a single set of filter element assembly is reduced, the motor energy consumption is eliminated, and the maintenance cost is reduced.

[0035] (5) A filter element with self-cleaning function, the substrate of the brush mechanism presents a spiral shape, and the first brush mechanism and the second brush mechanism also present a spiral shape, when processing the long fiber medium adhered to the first filter and the second filter, the spiral cleaning track of the first brush mechanism and the second brush mechanism is longer than the thread of the traditional linear brush washing, which can effectively solve the fiber winding problem and reduce the plugging frequency of the first filter mechanism and the second filter mechanism.

[0036] (6) A filter element with self-cleaning function, the first brush mechanism and the second brush mechanism both present a spiral shape, and when the airflow fan rotates, an axial and circumferential compound motion is formed between the first filter and the second filter, the cleaning track of the filter element assembly is upgraded from the traditional linear type to the spiral coverage type, the cleaning blind area of the wave crest and wave trough of the first filter and the second filter in the crumpled state is reduced, the dust removal rate of the fine structure such as the soldering point of the sintered mesh of the first filter is improved, and the cleaning comprehensiveness is improved.

[0037] (7) A filter cartridge with self-cleaning function, the first brush mechanism and the second brush mechanism induce a rotating vortex between the first filter mechanism and the second filter mechanism when rotating, cooperating with the reverse airflow of pulse backflushing, forming spiral flushing and radial peeling of the first filter and the second filter, thereby improving the peeling efficiency of surface particles, improving the removal rate of long strip-shaped particles stuck in the first filter and the second filter, and improving the self-cleaning quality.

[0038] (8) A filter cartridge with self-cleaning function, the density of the first brush mechanism and the second brush mechanism of the unit point is lower than that of the traditional linear shape, the gap of the first brush assembly and the gap of the second brush assembly are both enlarged, so that impurities are more easily discharged with airflow during brushing, the discharge efficiency of impurities is improved, the circumferential air volume deviation of the filter assembly is reduced, and the problem of one-way air volume decrease caused by impurities accumulation in the brush mechanism is solved. For example, the traditional linear brush is easy to accumulate fibers in one direction, resulting in a decrease in air volume at that location. The air flow uniformity of the filter assembly is improved.

[0039] (9) A filter cartridge with self-cleaning function, the connecting rod assembly cooperates with the air plate assembly to form an air seal. During normal filtration, the connecting rod assembly sinks under the action of gravity to block the lower air plate assembly, ensuring that the airflow is discharged from the upper air plate assembly after being filtered by the first filter mechanism, and improving the guidance of airflow circulation.

[0040] (10) A filter cartridge with self-cleaning function, when the backflushing airflow of the air pump mechanism lifts the connecting rod assembly, the connecting rod on the upper end of the rod head immediately blocks the sealing groove of the upper air plate assembly, so that the backflushing airflow completely reverses through the first filter mechanism and the second filter mechanism. Compared with the traditional open backflushing structure, the airflow utilization rate is improved, the inside flushing intensity uniformity of the first filter mechanism and the second filter mechanism is improved, and the backflushing airflow utilization rate is improved.

[0041] (11) A filter cartridge with self-cleaning function, the air guide mechanism uses gravity and air pressure difference to realize path switching. Compared with electrically controlled valves, circuit failure, coil aging and other problems are avoided. The power consumption of the air guide mechanism is small during normal operation, only the pre-stored clean gas in the air tank is used, no additional driving energy is needed during backflushing, the energy consumption of the filter assembly is lower than that of the traditional electrically controlled switching scheme, and the aging acceleration problem of the filter assembly caused by the heating of the electromagnetic valve coil is eliminated, improving the reliability of gas flow guide.

[0042] (12) A filter cartridge with self-cleaning function, a dust guide groove is provided on the substrate of the brush mechanism, and dust storage seats that can adsorb dust are provided at both ends of the substrate. After the first brush mechanism and the second brush mechanism brush off the dust between the first filter mechanism and the second filter mechanism, the dust is collected in the dust storage seats along the dust guide groove under the action of the backflushing airflow, and the brush mechanism can be pulled out for cleaning by disassembling the air pump mechanism, improving the collection performance of dust and impurities.

[0043] (13) A filter cartridge with self-cleaning function, wherein the brushing function of the first brushing mechanism is gradient-zoned to achieve precise removal of pollutants and effectively improve cleaning efficiency.

[0044] (14) A filter element with self-cleaning function, wherein bristles can be inserted into a second filter element, thereby improving the removal rate of particles stuck in the second filter element, effectively reducing the particle residue rate in the second filter element, and further improving the cleaning efficiency. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the present invention;

[0046] Figure 2 This is a schematic diagram of the filter element assembly docking of the present invention;

[0047] Figure 3 This is a schematic diagram of the filter element assembly of the present invention;

[0048] Figure 4 This is a schematic diagram of the first filter element mechanism of the present invention;

[0049] Figure 5 This is a schematic diagram of the air guiding mechanism of the present invention;

[0050] Figure 6 This is a schematic diagram of the brush mechanism of the present invention;

[0051] Figure 7 For the present invention Figure 6 Enlarged view of point A;

[0052] Figure 8 This is a schematic diagram of the air pump mechanism of the present invention;

[0053] Figure 9 This is a schematic diagram of the outer cover mechanism of the present invention;

[0054] Figure 10 This is a schematic diagram of the air chamber mechanism of the present invention;

[0055] Figure 11 For the present invention Figure 10 Enlarged view of point B;

[0056] Figure 12 This is a schematic diagram of the first brush mechanism of the present invention;

[0057] Figure 13 This is a schematic diagram of the second brush mechanism of the present invention.

[0058] In the figure: 1, first filter core mechanism; 101, first filter core; 102, first core seat; 2, second filter core mechanism; 201, second filter core; 202, second core seat; 3, brush mechanism; 301, ash storage seat; 302, base plate; 303, dust guide groove; 4, first brush mechanism; 401, first root brush; 402, middle brush; 403, hair sleeve; 404, sharp brush; 5, second brush mechanism; 501, second root brush; 502, hair; 6, air pump mechanism; 601, air pump; 602, first air pipe; 603, mounting cylinder; 604, air flow fan; 7, cover mechanism; 701, top plate; 702, air hole; 703, bottom plate; 704, grid; 8, air chamber mechanism; 801, air chamber; 802, second air pipe; 803, inductor; 804, third air pipe; 805, air cover; 9, air guide mechanism; 901, round plate; 902, sealing groove; 903, air passage; 904, limiting rod; 905, baffle; 906, connecting rod; 907, rod head. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0060] Embodiment: please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 A filter core with a self-cleaning function comprises a filter core assembly, the filter core assembly comprises a first filter core mechanism 1, the first filter core mechanism 1 comprises a first filter core 101, and the two ends of the first filter core 101 are fixedly connected with first core seats 102 respectively;

[0061] The filter core assembly further comprises a second filter core mechanism 2 sleeved outside the first filter core mechanism 1, the second filter core mechanism 2 comprises a second filter core 201, and the two ends of the second filter core 201 are fixedly connected with second core seats 202 respectively;

[0062] A brush mechanism 3 rotatable is arranged between the first filter core mechanism 1 and the second filter core mechanism 2, the brush mechanism 3 comprises a helical base plate 302, two ends of the base plate 302 are fixedly connected with dust storage seats 301 respectively adapted to be embedded between the first core seat 102 and the second core seat 202, the dust storage seats 301 are filled with dust-sticking glue, a middle surface of the base plate 302 towards the first filter core mechanism 1 is fixedly connected with a first brush mechanism 4 attached to the first filter core 101, and a middle surface of the base plate 302 towards the second filter core mechanism 2 is fixedly connected with a second brush mechanism 5 attached to the second filter core 201;

[0063] A gas pump mechanism 6 is arranged at the bottom of the filter core assembly;

[0064] An outer cover mechanism 7 is arranged on the outer cover of the filter core assembly.

[0065] Please refer to Figure 7 , edges of the base plate 302 extending out of the first brush mechanism 4 and the second brush mechanism 5 are respectively provided with dust guide grooves 303.

[0066] Please refer to Figure 12 , the first brush mechanism 4 is composed of a first brush assembly;

[0067] The first brush assembly comprises a first root brush 401 fixedly embedded with the base plate 302, and the first root brush 401 is made of silica gel material;

[0068] An intermediate brush 402 is fixedly connected to one end of the first root brush 401 away from the base plate 302, and a threaded brush sleeve 403 is fixedly wound outside the intermediate brush 402;

[0069] An inclined staggered tip brush 404 is fixedly connected to one end of the intermediate brush 402 away from the first root brush 401, the tip brush 404 is made of nylon material, and the flexible contact of the tip brush 404 is used to peel off loose particles such as dust and fibers on the surface of the first filter core 101, so as to avoid damage to the first filter core 101 caused by rigid contact.

[0070] Please refer to Figure 13 , the second brush mechanism 5 is composed of a second brush assembly;

[0071] The second brush assembly comprises a second root brush 501 fixedly embedded with the base plate 302, a hair 502 is fixedly connected to one end of the second root brush 501 away from the base plate 302, one end of the hair 502 away from the second root brush 501 is smooth, the hair 502 can be inserted into the second filter core 201, and particles blocked in the second filter core 201 can be removed, so as to effectively reduce the particle residual rate in the second filter core 201 and further improve the cleaning efficiency.

[0072] Please refer to Figure 1 , Figure 2 ,Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 , the first filter core mechanism 1 is provided with a gas guide mechanism 9, the gas guide mechanism 9 includes two symmetrical air plate assemblies, and the two air plate assemblies are respectively located at two ends of the first filter core mechanism 1;

[0073] Each air plate assembly includes a circular plate 901 fixedly plugged with the first core seat 102, an inward surface of the circular plate 901 is uniformly and equidistantly provided with a sealing groove 902, an outward surface of the circular plate 901 is uniformly and equidistantly provided with a gas passage groove 903 in communication with the sealing groove 902, the gas passage groove 903 is inwardly recessed at one end facing the sealing groove 902, an inner bottom surface of the sealing groove 902 is fixedly connected with a limiting rod 904, and an end portion of the limiting rod 904 is fixedly connected with a baffle 905;

[0074] A connecting rod assembly is arranged between the two air plate assemblies, the connecting rod assembly includes a rod head 907, two ends of the rod head 907 are respectively fixedly connected with a connecting rod 906 adaptively plugged with the sealing groove 902, and the limiting rod 904 penetrates through the connecting rod 906.

[0075] The gas pump mechanism 6 includes a gas pump 601, and a first gas pipe 602 is fixedly connected in communication with a side edge of the gas pump 601;

[0076] The gas pump 601 and the second core seat 202 below are fixedly installed with a mounting cylinder 603;

[0077] An output end of the gas pump 601 is docked with an air flow fan 604 movably embedded in the mounting cylinder 603 through a bearing, and an upper end of the air flow fan 604 is fixedly connected with the ash storage seat 301 below.

[0078] The cover mechanism 7 includes a top plate 701 above the filter core assembly and a bottom plate 703 below the filter core assembly, and a plurality of gratings 704 are fixedly connected in equal intervals and uniformity between the top plate 701 and the bottom plate 703;

[0079] The top plate 701 is fixedly connected with the first filter core 101 above and the second filter core 201 above, and a gas hole 702 opposite to the air plate assembly is through-provided in a middle portion of a surface of the top plate 701;

[0080] The bottom plate 703 is fixedly sleeved with the mounting cylinder 603.

[0081] The side of the cover mechanism 7 is provided with an air chamber mechanism 8, the air chamber mechanism 8 comprises an air chamber 801, the side of the air chamber 801 is fixedly connected with a second air pipe 802 which is in communication with a first air pipe 602, the upper part of the air chamber 801 is fixedly connected with a sensor 803, the lower part of the air chamber 801 is fixedly connected with a third air pipe 804, the end of the third air pipe 804 away from the air chamber 801 is fixedly connected with a ring-shaped air cover 805, and the air cover 805 covers the outer ring of the air hole 702.

[0082] The working principle of the present application is as follows:

[0083] The filter core assembly adopts a double-layer cylindrical structure, the inner layer is a first filter core mechanism 1, the first filter core 101 adopts high-precision filtering material, the outer layer is a second filter core mechanism 2, the second filter core 201 adopts low-precision filtering material, a rotatable brush mechanism 3 is arranged between the first filter core mechanism 1 and the second filter core mechanism 2, and an air pump mechanism 6 is arranged at the bottom of the filter core assembly; high-pressure gas flow is injected into the inside of the filter core assembly through a gas guide mechanism 9 arranged in the first filter core mechanism 1, pulse back blowing is realized, on one hand, the impurities blocking the first filter core 101 and the second filter core 201 on one side of the first filter core mechanism 1 and the second filter core mechanism 2 are blown off, on the other hand, the loose dust on the surface of the first filter core 101 and the second filter core 201 is shaken off through pulse action, thereby the hard cleaning required by the first filter core mechanism 1 and the second filter core mechanism 2 can be reduced, and the service life of the first filter core mechanism 1 and the second filter core mechanism 2 is improved.

[0084] The ring-shaped air cover 805 collects a small part of clean gas produced at the outlet end of the upper part of the filter core assembly in real time, when the filter core works, the clean gas at the outlet end is at normal pressure or slightly higher than normal pressure, and has a continuous flow rate due to the resistance of the filter core, part of the gas is guided into the air chamber 801 by using the flow kinetic energy of the clean gas, as long as the filter core continuously produces gas, the air chamber 801 can continuously accumulate gas, and the air chamber 801 is dynamically and continuously supplemented, so that a sufficient amount of gas can be accumulated, and the accumulated gas in the air chamber 801 is used as a back blowing gas source after buffering, thereby completely avoiding the secondary pollution risk of oil stains and iron rust possibly carried by the traditional external gas source such as compressed air, the cleanliness of the back blowing gas is improved compared with the external gas source, the chemical corrosion rate of the first filter core mechanism 1 is reduced, and the protection performance of the first filter core mechanism 1 is improved.

[0085] The upper part of the air tank 801 is provided with a sensor 803 to monitor the gas volume in the air tank 801 in real time. When the storage capacity of the air tank 801 reaches the rated capacity, it is noted that the rated capacity here is not "several times the volume at normal pressure", but refers to the gas volume of the air tank 801 at normal pressure reaching a set threshold (such as 80%) of its own volume. Since the gas is compressible and the physical volume of the air tank 801 is fixed, the "gas volume" is actually monitored by a pressure sensor. When the gas in the air tank 801 continues to accumulate and the pressure gradually rises (although it is still close to normal pressure, but there is a slight increase), it reaches the set pressure threshold, which is determined as reaching the rated capacity, and the pulse backflush of the air pump mechanism 6 is started. The air volume of the pulse backflush controlled by the air pump mechanism 6 is dynamically adjusted according to the real-time gas production of the filter element assembly. In low load conditions, the backflush frequency is automatically reduced to avoid excessive cleaning leading to damage of the first filter element mechanism 1 and the second filter element mechanism 2. In high load conditions, the backflush frequency is automatically increased to ensure that the first filter element mechanism 1 and the second filter element mechanism 2 always maintain the initial filtering resistance. The pulse backflush frequency is adaptively adjusted to improve the intelligent dynamic performance of self-cleaning.

[0086] The brush mechanism 3 abandons the traditional motor driving mode and directly uses the high-pressure pulse airflow output by the air pump 601 to impact the blades of the airflow fan 604, converting part of the kinetic energy of the backflush airflow into the rotating power of the brush mechanism 3. Compared with electric driving, the power consumption of a single set of filter element assembly is reduced, the motor energy consumption is eliminated, and the maintenance cost is reduced.

[0087] The function positioning of the air pump mechanism 6: it is not directly used for backflush with normal pressure gas in the air tank 801, but as a booster pump to compress the normal pressure gas in the air tank 801 into high-pressure pulse airflow (similar to a pump that compresses normal pressure air into high pressure). The role of the air tank 801 is to "buffer and store" the continuously collected clean gas. The air pump works to extract and boost the gas from the air tank 801. Therefore, the "sufficiency" of the backflush gas source depends on the volume design of the air tank 801 and the boosting capacity of the air pump 601, rather than the initial pressure in the air tank 801.

[0088] The positioning of the brush mechanism 3 is "auxiliary cleaning of floating dust", and the backflush bears the function of "deep cleaning". The airflow is the impact airflow of the airflow fan 604 after being boosted, and it works together with the backflush airflow to assist and enhance the dust cleaning effect.

[0089] This filter element performs a small number of cleanings based on the rated capacity of the air tank 801, so the dust accumulation and blockage of the filter element will be lower compared to the filter element that is cleaned uniformly and once, and thus it is suitable for this type of cleaning method.

[0090] The base plate 302 of the brush mechanism 3 is helical, and the first brush mechanism 4 and the second brush mechanism 5 are also helical. When the long fiber medium adhered to the first filter element 101 and the second filter element 201 is treated, the helical cleaning track of the first brush mechanism 4 and the second brush mechanism 5 is longer than the linear thread of the conventional linear brush washing, which can effectively solve the fiber winding problem and reduce the clogging frequency of the first filter element mechanism 1 and the second filter element mechanism 2.

[0091] The first brush mechanism 4 and the second brush mechanism 5 are helical, and when the air flow fan 604 rotates, axial and circumferential compound motion is formed between the first filter element 101 and the second filter element 201. The cleaning track of the filter element assembly is upgraded from the conventional linear type to the spiral coverage type. The cleaning blind area of the peaks and troughs of the first filter element 101 and the second filter element 201 in the creased state is reduced, the removal rate of dust on the fine structure such as the sintered mesh weld point of the first filter element 101 is improved, and the cleaning comprehensiveness is improved.

[0092] The first brush mechanism 4 and the second brush mechanism 5 induce a rotating vortex between the first filter element mechanism 1 and the second filter element mechanism 2 when rotating, and cooperate with the reverse air flow of pulse back blowing to form spiral flushing and radial peeling of the first filter element 101 and the second filter element 201, thereby improving the peeling efficiency of surface particles, improving the removal rate of long strip-shaped particles stuck in the first filter element 101 and the second filter element 201, and improving the self-cleaning quality.

[0093] The density of the first brush mechanism 4 and the second brush mechanism 5 per unit point is reduced compared with the conventional linear type, the gap of the first brush assembly and the gap of the second brush assembly are both enlarged, so that impurities are more easily discharged with the air flow during brushing, the discharge efficiency of impurities is improved, the circumferential air volume deviation of the filter element assembly is reduced, and the problem of one-way air volume reduction caused by the accumulation of impurities in the brush mechanism 3 is solved. For example, the conventional linear brush is easy to accumulate fibers in one direction, which reduces the air volume at that place, and improves the air flow uniformity of the filter element assembly.

[0094] The connecting rod assembly cooperates with the air plate assembly to form an air seal. During normal filtration, the connecting rod assembly sinks under the action of gravity to block the lower air plate assembly, ensuring that the air flow is discharged from the upper air plate assembly after being filtered by the first filter element mechanism 1, and improving the guidance of air flow circulation.

[0095] When the back blowing air flow of the air pump mechanism 6 lifts the connecting rod assembly, the connecting rod 906 on the upper end of the rod head 907 immediately blocks the sealing groove 902 of the upper air plate assembly, so that the back blowing air flow completely reverses through the first filter element mechanism 1 and the second filter element mechanism 2. Compared with the conventional open back blowing structure, the air flow utilization rate is improved, the inside washing intensity uniformity of the first filter element mechanism 1 and the second filter element mechanism 2 is improved, and the back flushing air flow utilization rate is improved.

[0096] The air guide mechanism 9 switches the path by using the gravity and the air pressure difference, compared with the electric control valve, avoids the problems of circuit failure, coil aging and the like, and has small power consumption during normal operation. Only the clean gas pre-stored in the air tank 801 is used, and no additional driving energy is needed during the back blowing process, so that the energy consumption of the filter core assembly is reduced compared with the traditional electric control switching scheme, and the problem of accelerated aging of the filter core assembly caused by the heating of the electromagnetic valve coil is eliminated, and the reliability of the air guide is improved.

[0097] The base plate 302 of the brush mechanism 3 is provided with a dust guide groove 303, and dust storage seats 301 capable of adsorbing dust are arranged at both ends of the base plate 302. After the dust between the first filter core mechanism 1 and the second filter core mechanism 2 is brushed off by the first brush mechanism 4 and the second brush mechanism 5, the dust is collected in the dust storage seats 301 under the driving of the back blowing air flow along the dust guide groove 303, and the brush mechanism 3 can be pulled out for cleaning by disassembling the air pump mechanism 6, thereby improving the collection performance of dust and impurities.

[0098] The first brush mechanism 4 includes a three-layer composite structure. The tip brush 404 is made of elastic material and is arranged in an inclined angle staggered manner. The flexible contact is used to peel off the loose particles on the surface of the first filter core 101, so as to avoid damage to the first filter core 101 caused by rigid contact, and effectively reduce the breakage rate of the first filter core 101. The outer spiral winding of the middle brush 402 is provided with a brush sleeve 403, which can clamp impurities when the first brush assembly is bent, and destroy the adhesion of pollutants. The first root brush 401 is made of silica gel material, and forms elastic contact with the first filter core 101, so as to prevent the root of the first brush assembly from wearing the first filter core 101, and at the same time generate high-frequency micro-vibration during brushing, which assists the particles to fall off. The gradient zoning of the brushing function of the first brush mechanism 4 realizes accurate peeling of pollutants, and effectively improves the cleaning efficiency.

[0099] The hair 502 of the second brush assembly of the second brush mechanism 5 is made of polyamide elastic material, and the end of the hair 502 away from the second root brush 501 is smooth, which can be inserted into the second filter core 201, improve the removal rate of particles stuck in the second filter core 201, effectively reduce the particle residual rate in the second filter core 201, and further improve the cleaning efficiency.

[0100] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A filter core with self-cleaning function, comprising a filter core assembly, the filter core assembly comprising a first filter core mechanism (1), the first filter core mechanism (1) comprising a first filter core (101), both ends of the first filter core (101) being fixedly connected with a first core seat (102) respectively; characterized in that the filter core assembly further comprising a second filter core mechanism (2) sleeved outside the first filter core mechanism (1), the second filter core mechanism (2) comprising a second filter core (201), both ends of the second filter core (201) being fixedly connected with a second core seat (202) respectively; a rotatable brush mechanism (3) being arranged between the first filter core mechanism (1) and the second filter core mechanism (2), the brush mechanism (3) comprising a spiral base plate (302), both ends of the base plate (302) being fixedly connected with an ash storage seat (301) adapted to be inserted between the first core seat (102) and the second core seat (202) respectively, the ash storage seat (301) being filled with dust-sticking glue, a middle surface of the base plate (302) towards the first filter core mechanism (1) being fixedly connected with a first brush mechanism (4) attached to the first filter core (101), a middle surface of the base plate (302) towards the second filter core mechanism (2) being fixedly connected with a second brush mechanism (5) attached to the second filter core (201); a gas pump mechanism (6) being arranged at the bottom of the filter core assembly; an outer cover mechanism (7) being arranged outside the filter core assembly.

2. The filter cartridge with self-cleaning function according to claim 1, characterized in that: edges of the base plate (302) extending beyond the first brush mechanism (4) and the second brush mechanism (5) and both sides of the base plate (302) being respectively provided with a dust guide groove (303).

3. The filter cartridge with self-cleaning function according to claim 1, characterized in that: the first brush mechanism (4) being composed of a first brush assembly; the first brush assembly comprising a first root brush (401) fixedly inserted into the base plate (302); an end of the first root brush (401) away from the base plate (302) being fixedly connected with a middle brush (402), an outer side of the middle brush (402) being fixedly wound with a threaded brush cover (403); an end of the middle brush (402) away from the first root brush (401) being fixedly connected with an inclined staggered tip brush (404).

4. The filter cartridge with self-cleaning function according to claim 1, characterized in that: the second brush mechanism (5) being composed of a second brush assembly; the second brush assembly comprising a second root brush (501) fixedly inserted into the base plate (302), an end of the second root brush (501) away from the base plate (302) being fixedly connected with a hair (502), an end of the hair (502) away from the second root brush (501) being rounded.

5. The filter cartridge with self-cleaning function according to claim 1, characterized in that: a gas guide mechanism (9) being arranged in the first filter core mechanism (1), the gas guide mechanism (9) comprising two symmetrical gas plate assemblies, both the gas plate assemblies being respectively at both ends of the first filter core mechanism (1). Each of the air plate assemblies comprises a circular plate (901) fixedly connected with a first core seat (102), an inward surface of the circular plate (901) is uniformly and equidistantly provided with sealing grooves (902), an outward surface of the circular plate (901) is uniformly and equidistantly provided with air grooves (903) communicated with the sealing grooves (902), one end of the air grooves (903) towards the sealing grooves (902) is inwardly recessed, an inner bottom surface of the sealing grooves (902) is fixedly connected with a limiting rod (904), and an end of the limiting rod (904) is fixedly connected with a baffle (905). A connecting rod assembly is arranged between two of the air plate assemblies, the connecting rod assembly comprises a rod head (907), two ends of the rod head (907) are fixedly connected with connecting rods (906) adaptively and insertingly connected with the sealing grooves (902), and the limiting rod (904) penetrates the connecting rods (906).

6. The filter cartridge with self-cleaning function according to claim 5, characterized in that: The air pump mechanism (6) comprises an air pump (601), and a side edge of the air pump (601) is fixedly connected with a first air pipe (602). The air pump (601) and the second core seat (202) below are fixedly installed with a mounting cylinder (603). An air flow fan (604) is butted to an output end of the air pump (601) and movably embedded in the mounting cylinder (603) through a bearing, and an upper end of the air flow fan (604) is fixedly connected with the ash storage seat (301) below.

7. The filter cartridge with self-cleaning function according to claim 6, characterized in that: The cover mechanism (7) comprises a top plate (701) above the filter core assembly and a bottom plate (703) below the filter core assembly, and the top plate (701) and the bottom plate (703) are fixedly connected with gratings (704) equidistantly and uniformly. The top plate (701) is fixedly connected with the first filter core (101) above and the second filter core (201) above, and a surface of the top plate (701) is provided with an air hole (702) opposite to the air plate assembly and penetratingly formed in a middle portion of the surface. The bottom plate (703) is fixedly sleeved with the mounting cylinder (603).

8. The filter cartridge with self-cleaning function according to claim 7, characterized in that: The cover mechanism (7) is provided with an air warehouse mechanism (8) on a side edge thereof, the air warehouse mechanism (8) comprises an air warehouse (801), a side edge of the air warehouse (801) is fixedly connected with a second air pipe (802) butted to the first air pipe (602), an upper portion of the air warehouse (801) is fixedly connected with an inductor (803), a lower portion of the air warehouse (801) is fixedly connected with a third air pipe (804), one end of the third air pipe (804) away from the air warehouse (801) is fixedly connected with an annular air cover (805), and the air cover (805) covers an outer ring of the air hole (702).

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