CN223641565U - A new type of self-cleaning air filtration device - Google Patents

Abstract

The utility model discloses novel self-cleaning air filtering equipment which comprises a machine case, a fan, a cyclone device, a filter vat, a self-cleaning module, a first dust collecting box and a second dust collecting box, wherein the first dust collecting box and the second dust collecting box are arranged below the cyclone device and the filter vat and are used for receiving filter residues, the cyclone device divides the machine case from top to bottom, the second cavity in the middle of the cyclone device corresponds to a first air inlet of the machine case, a fourth cavity and a sixth cavity are respectively arranged in the machine case and are respectively used for accommodating the filter vat and the self-cleaning module, a fifth cavity is arranged between the fourth cavity and the sixth cavity and communicated with each other, an inlet and an outlet of the fan are respectively arranged in the fifth cavity and the sixth cavity, a first one-way valve is arranged between the first cavity and the fourth cavity and communicated with a first air outlet of the machine case.

Description

Novel self-cleaning air filtration equipment

Technical field:

The utility model relates to the field of environmental protection equipment, in particular to novel self-cleaning air filtering equipment.

The background technology is as follows:

An air filter is a device for removing harmful substances in air, and is widely applied to industrial production. In industrial processes such as machining, chemical production and combustion, a large amount of toxic and harmful exhaust gas and particulate matters such as oil mist, dust, volatile Organic Compounds (VOCs) and smoke are generated, and the pollutants pose a threat to the health of workers and the normal operation of equipment. The industrial air filter can effectively remove particulate matters and harmful gases in waste gas through multistage filtering technology such as bag filters, HEPA filters, activated carbon filters, electrostatic precipitators and the like, improve workshop environment, reduce equipment loss and ensure to meet environmental protection emission standards.

For example, in the technical scheme disclosed in the patent, an air filtering treatment device for a machine tool is disclosed in CN202962159U, wherein an air inlet is formed at one end of a machine case, a negative pressure forming box is arranged at the other end of the machine case, an air outlet is formed on the negative pressure forming box, a filtering mechanism is arranged in the machine case and comprises a support arranged in a filtering cavity, a diffusion flow guiding structure and a filtering structure which are axially distributed along the air inlet are arranged on the support, a sewage draining mechanism is respectively arranged at the lower parts of the machine case and the negative pressure forming box, an installation opening for installing the filtering mechanism is formed at the upper part of the machine case, a cover plate is connected to the installation opening through an opening and closing mechanism, and a sealing structure is arranged between the cover plate and the installation opening. The diffusion guide structure and the filter structure are arranged to be favorable for enhancing the filter precision of the whole device, improving the filter effect, prolonging the service life of the filter device, and the mounting opening and the opening and closing mechanism are arranged to be favorable for the disassembly and the cleaning of the filter mechanism.

However, the above prior art has the following problems:

1. the filter mechanism 4 needs to be frequently disassembled and cleaned, so that the work of a machine tool is influenced, time and labor are wasted, and the cost is high;

2. the single filtering mechanism 4 has limited filtering range, can not realize high-efficiency filtering of particles with different sizes, is extremely easy to cause the reduction of the filtering effect of the filtering mechanism 4 and needs frequent maintenance;

3. The negative pressure forming box 3 and the air inlet 2 are respectively positioned at two ends of the case 1, so that air flow directly impacts the filtering mechanism 4, a buffering and flow equalizing space is lacked, the flow speed is too fast, and the filtering effect of the filtering mechanism 4 is reduced.

In view of this, the present inventors have proposed the following means.

The utility model comprises the following steps:

The utility model aims to overcome the defects of the prior art and provides novel self-cleaning air filtering equipment.

The novel self-cleaning air filtering device comprises a machine case, a fan, a cyclone device, a filter vat, a self-cleaning module, a first dust collecting box and a second dust collecting box, wherein the first dust collecting box and the second dust collecting box are arranged below the cyclone device and the filter vat and are used for receiving filter residues, the cyclone device divides the machine case from top to bottom into a first cavity, a second cavity and a third cavity, the second cavity in the middle of the cyclone device corresponds to a first air inlet of the machine case, a fourth cavity and a sixth cavity are further arranged in the machine case and are respectively used for accommodating the filter vat and the self-cleaning module, a fifth cavity is arranged between the fourth cavity and the sixth cavity and communicated with each other, an inlet and an outlet of the fan are respectively arranged in the fifth cavity and the sixth cavity, a first one-way valve is arranged between the first cavity and the fourth cavity, and the sixth cavity is communicated with a first air outlet of the machine case.

Furthermore, in the above technical scheme, the self-cleaning module comprises a rotary back-blowing device which is positioned in the filter vat and can rotate, a gas storage tank which is arranged in the machine case, a connecting hose which is used for connecting the gas storage tank with the rotary back-blowing device, a gas valve which is arranged on the connecting hose, and an oil-water separation device which is arranged on a connecting pipe of the gas storage tank and an external gas source.

Furthermore, in the above technical scheme, the rotary blowback device is including butt joint coupling hose and extend to the stay tube in the filter vat and in order to install in the stay tube lower extreme and can be to the rotatory jet-propelled pipe support of side blowout air current with rotatable mode, be provided with two at least rows of vertical range's fumaroles on this rotatory jet-propelled pipe support.

Furthermore, in the above technical scheme, the first apron is installed to the cover slip sheet on the stay tube, and the diameter of this first apron is greater than the first communication hole between fourth cavity and the fifth cavity, and the collection fan housing that can cover on the first apron is installed to the upper end of stay tube, and the upper end of first apron is provided with the sleeve portion that can stretch into in the collection fan housing, is provided with on the pipe wall of stay tube and is used for letting in the air current in the collection fan housing in order to promote the pressure release hole of first apron covering first communication hole downwards, and still overlaps on the stay tube to establish and install the reset spring that is used for opening first communication hole with first apron jack-up.

Furthermore, in the above technical scheme, the case is further provided with a second one-way valve located beside the filter vat and used for discharging gas rapidly when the rotary back blowing device blows, the outer side of the second one-way valve is provided with a silencing cover, the upper end of the silencing cover is communicated with the sixth cavity, and the first air outlet of the case is located at the upper end of the silencing cover.

In the technical scheme, the air valve is an electromagnetic valve and has two modes of switchable timing air explosion and manual air explosion, a selection switch for switching the timing air explosion and the manual air explosion is arranged on the case, a timer for controlling the air valve to generate the air explosion at the timing is arranged in the case, and a pulser is arranged beside the timer.

Furthermore, in the above technical scheme, the cyclone device comprises a second air inlet located at the center and corresponding to the second cavity, a plurality of second air outlets and dust discharging ports arranged at the periphery of the second air inlet and respectively facing upwards and downwards, and a plurality of flow guiding air passages connected to the second air inlet at the center and spirally wound on the second air outlets one by one outwards, wherein the second air outlets and the dust discharging ports are respectively located in the first cavity and the third cavity, and the dust discharging ports are funnel-shaped.

Furthermore, in the above technical solution, the cyclone device is provided with a plurality of cyclone devices, a first mounting plate which is located between the first cavity and the second cavity and is used for mounting the cyclone device is disposed in the chassis, and the first mounting plate is obliquely mounted so that the second air outlet faces the first one-way valve.

Furthermore, in the above technical scheme, be provided with the first filter screen that is used for filtering large granule thing in the first air intake, this first filter screen is located between first air intake and the second cavity, and is provided with the income oral cavity that is used for holding large granule debris in the first air intake.

In the technical scheme, the machine case comprises an upper machine case and a lower machine case, wherein the fan and the self-cleaning module are located in the upper machine case, the cyclone device and the filter vat are located in the lower machine case, the first dust collecting box and the second dust collecting box are symmetrically installed at the bottom of the lower machine case and can be respectively pulled out towards two sides, the upper machine case is internally provided with an inner shell which is covered above the filter vat and forms a fifth cavity, the fan is installed on the inner shell, and one end of the self-cleaning module penetrates through the inner shell and extends into the filter vat.

Compared with the prior art, the utility model has the advantages that the fan is adopted to generate negative pressure suction in the case, external air is sucked from the first air inlet of the case, centrifugal separation is carried out through the cyclone device, large particle dust in the air is separated and falls into the first dust collecting box, air which enters the fourth cavity after being filtered is filtered again through the filter barrel and enters the fifth cavity, and is pumped out by the fan and discharged to the sixth cavity, and finally is discharged from the first air outlet, thereby realizing multiple filtration of the air.

Description of the drawings:

FIG. 1 is a schematic view of the internal structure of the present utility model;

FIG. 2 is a schematic illustration of the flow of gas in a filtered state according to the present utility model;

FIG. 3 is a schematic illustration of the flow of gas in a backwash state according to the present utility model;

FIG. 4 is a schematic view of the sound attenuating cap of the present utility model;

FIG. 5 is a schematic view of the internal structure of the upper case in the open state;

FIG. 6 is a second schematic view of the internal structure of the upper case in the open state of the present utility model;

FIG. 7 is a perspective view of the present utility model;

FIG. 8 is a schematic view of a rotary blowback apparatus according to the present utility model;

FIG. 9 is a cross-sectional view of a rotary blowback apparatus in accordance with the present utility model;

figure 10 is a schematic view of the cyclone device according to the present utility model.

The specific embodiment is as follows:

The utility model will be further described with reference to specific examples and figures.

Referring to fig. 1 to 10, the novel self-cleaning air filtering device comprises a case 1, a fan 2, a cyclone device 3, a filter vat 4, a self-cleaning module 5, a first dust collecting box 6 and a second dust collecting box 7 which are arranged below the cyclone device 3 and the filter vat 4 and used for receiving filter residues, wherein the cyclone device 3 divides the case 1 from top to bottom into a first cavity A, a second cavity B and a third cavity C, the second cavity B in the middle of the cyclone device corresponds to a first air inlet 101 of the case 1, a fourth cavity D and a sixth cavity F which are respectively used for accommodating the filter vat 4 and the self-cleaning module 5 are further arranged in the case 1, a fifth cavity E is arranged between the fourth cavity D and the sixth cavity F and an inlet and an outlet of the fan 2 are respectively positioned in the fifth cavity E and the sixth cavity F, a first check valve 19 is arranged between the first cavity A and the fourth cavity D and is communicated with a first air outlet 102 of the case 1. The air blower 2 is adopted to generate negative pressure suction in the case 1, external air is sucked from a first air inlet 101 of the case 1, centrifugal separation is carried out through a cyclone device 3, large particle dust in the air is separated and falls into a first dust collecting box 6, air which enters a fourth cavity D after being filtered enters a fifth cavity E after being filtered again through a filter drum 4, the air is pumped out by the air blower 2 and discharged to a sixth cavity F, and finally the air is discharged from a first air outlet 102, so that multiple filtration of the air is realized, and after dust with a certain thickness is deposited on the filter drum 4, high-speed airflow is sprayed into the filter drum 4 through a self-cleaning module 5 to generate air explosion, and the dust attached to the filter drum 4 is blown into a second dust collecting box 7 under the impact of the airflow, so that the back flushing of the filter drum 4 is realized, the service life of the filter drum 4 is greatly prolonged, the replacement times of the filter drum 4 are reduced, and the use cost is reduced. Of course, in order to ensure that the waste gas can smoothly enter the chassis 1, a blower can be added to the external pipeline of the first air inlet 101, so as to ensure that the air quantity entering the chassis 1 can meet the requirement.

The self-cleaning module 5 comprises a rotary back-blowing device 51 which is positioned in the filter vat 4 and can rotate, a gas storage tank 52 which is arranged in the machine case 1, a connecting hose 53 which connects the gas storage tank 52 with the rotary back-blowing device 51, a gas valve 54 which is arranged on the connecting hose 53, and an oil-water separation device 55 which is arranged on a connecting pipe between the gas storage tank 52 and an external gas source. The air storage tank 52 is used for storing sufficient gas, the oil-water separator 55 is arranged at the front end of the connection of the air storage tank 52 and an air source, the gas entering the air storage tank 52 is subjected to water-steam separation and filtration through the oil-water separator 55, the air for backwashing cleaning is guaranteed to contain no moisture, so that the water steam is prevented from being sprayed onto the non-woven fabric of the filter vat 4 along with the backwashing gas, normal filtration is prevented from being influenced after the non-woven fabric is soaked with water, the backwashing is guaranteed to not damage the filter vat 4, and the service life of the filter vat 4 is prolonged.

When back flushing is needed, the air in the air storage tank 52 is controlled by the air valve 54 to be sprayed out of the rotary back blowing device 51 through the connecting hose 53, the pressure is suddenly reduced due to the fact that high-pressure air is sprayed into the filter vat 4 from the rotary back blowing device 51, thrust is generated in the process of releasing air pressure, when the thrust and the rotation center have an inclined included angle, the rotary back blowing device 51 is pushed to rotate, meanwhile, air explosion is generated in the process of quickly releasing the pressure to perform high-pressure air blowing flushing on the filter vat 4, dust on the side wall of the filter vat 4 is blown into the second dust collecting box 7, and in the process of rotating the rotary back blowing device 51 at a high speed, the high-speed air flow is enabled to continuously rotate to impact the outer wall of the filter vat 4, and 360-degree dead-angle-free flushing is achieved.

The rotary back-blowing device 51 comprises a support tube 511 which is connected with the hose 53 in a butt joint and extends into the filter vat 4, and a rotary jet pipe rack 512 which is rotatably arranged at the lower end of the support tube 511 and can jet air flow to the side, wherein at least two rows of jet holes 513 are arranged on the rotary jet pipe rack 512 in a vertical arrangement. The two rows of air injection holes 513 are centrally and symmetrically located at two sides of the support tube 511, and the same reverse rotation thrust is generated when the high-pressure air is injected from the two rows of air injection holes 513, so that the rotary air injection pipe rack 512 rotates, and of course, in order to ensure that the rotary air injection pipe rack 512 can smoothly rotate, the air injection holes 513 can be arranged in an inclined direction, and then a shearing force can be generated relative to the support tube 511 when the air injection holes 513 inject air, so that the rotary air injection pipe rack 512 can rotate more rapidly.

The rotary jet pipe rack 512 comprises a support rod 512A abutted to the lower end of the support tube 511, a communication seat 512B sleeved on the upper end of the support rod 512A and capable of rotating relatively, a first exhaust pipe 512C and a second exhaust pipe 512D arranged at two ends of the communication seat 512B and parallel to the support rod 512A, a connecting seat 512E sleeved on the lower end of the support rod 512A and used for connecting and supporting the first exhaust pipe 512C and the second exhaust pipe 512D, a support sleeve 512F arranged between the communication seat 512B and the connecting seat 512E and sleeved on the support rod 512A, and a first bearing 512J and a second bearing 512K respectively arranged between the support rod 512A and the communication seat 512B and the connecting seat 512E, wherein the air injection holes 513 are vertically arranged on the first exhaust pipe 512C and the second exhaust pipe 512D, a first inner through hole 512G communicated with the support tube 511 for passing air flow is arranged on the upper part of the support rod 512A, and a second inner through hole 512H and a third inner through hole 512I communicated with the first exhaust pipe 512C and the second exhaust pipe 512D are arranged in the communication seat 512B. The first exhaust pipe 512C, the second exhaust pipe 512D and the support sleeve 512F are metal pieces, the communication seat 512B and the connection seat 512E are injection molding pieces, and the communication seat 512B and the connection seat 512E are injection molded at two ends of the first exhaust pipe 512C, the second exhaust pipe 512D and the support sleeve 512F in an integrated molding manner. The ends of the first bearing 512J and the second bearing 512K are respectively mounted on the support rod 512A through a clamp spring.

In the above, there are two embodiments of the support sleeve 512F:

First, the support sleeve 512F is only sleeved on the support rod 512A between the communication seat 512B and the connection seat 512E, in which state the first bearing 512J is located between the communication seat 512B and the support rod 512A, and the second bearing 512K is located between the connection seat 512E and the support rod 512A.

Second, the communication seat 512B and the connection seat 512E are injection molded on the outer wall of the support sleeve 512F, the support sleeve 512F completely penetrates through the communication seat 512B and the connection seat 512E, the support sleeve 512F is provided with vent holes corresponding to the second inner through hole 512H and the third inner through hole 512I and communicated with the first inner through hole 512G, and the first bearing 512J and the second bearing 512K are installed between the support sleeve 512F and the support rod 512A.

The support tube 511 is slidably sleeved with a first cover plate 514, the diameter of the first cover plate 514 is larger than that of a first communication hole between the fourth cavity D and the fifth cavity E, a wind collecting cover 515 capable of being covered on the first cover plate 514 is arranged at the upper end of the support tube 511, a sleeve part 514A capable of extending into the wind collecting cover 515 is arranged at the upper end of the first cover plate 514, a pressure release hole 51A for introducing air flow into the wind collecting cover 515 to push the first cover plate 514 to downwards cover the first communication hole is arranged on the tube wall of the support tube 511, and a reset spring 516 for jacking the first cover plate 514 to open the first communication hole is also sleeved on the support tube 511. By arranging the first cover plate 514 capable of sliding on the support tube 511, when high-pressure gas is introduced into the support tube 511, part of the gas flows out from the pressure release hole 51A into the wind collecting cover 515, so that pressure generated in the wind collecting cover 515 pushes the first cover plate 514 to slide down on the first communication hole, and the gas sprayed from the air spraying hole 513 is prevented from flowing into the fifth cavity E upwards through the first communication hole, so that backwash gas flows out from the second one-way valve 15.

The support tube 511 is further provided with an inner lining frame 517 disposed in the first communication hole and adapted to seal the first communication hole in cooperation with the first cover plate 514, an inner ring portion 517A of the inner lining frame 517 is fixedly connected with the support tube 511, an outer ring portion 517B of the inner lining frame 517 is sleeved with a sealing ring 518, and at least two first connecting plates 517C are disposed between the inner ring portion 517A and the outer ring portion 517B for connection. The inner ring 517A is formed with a threaded hole, wherein the lower end of the support pipe 511 and the upper end of the support pipe 512A are both screwed with the threaded hole of the inner ring 517A.

The case 1 is further provided with a second one-way valve 15 located beside the filter vat 4 and used for rapidly discharging gas when the rotary blowback device 51 blows, the outer side of the second one-way valve 15 is provided with a silencing cover 16, the upper end of the silencing cover 16 is communicated with a sixth cavity F, and the first air outlet 102 of the case 1 is located at the upper end of the silencing cover 16. A seventh cavity G is formed in the silencing cover 16, and silencing cotton is disposed in the seventh cavity G, so that air flows out of the first air outlet 102 of the sixth cavity F and then enters the silencing cover 16, and noise generated when the air flows out of the chassis 1 is reduced by the silencing cotton in the silencing cover 16. The air valve 54 is an electromagnetic valve and has two modes of switchable timing air explosion and manual air explosion, a selection switch 56 for switching the timing air explosion and the manual air explosion is arranged on the case 1, a timer 57 for controlling the air valve 54 to generate the air explosion at fixed time and a pulser 58 positioned beside the timer 57 are arranged in the case 1.

The cyclone device 3 comprises a second air inlet 31 located at the center and corresponding to the second cavity B, a plurality of second air outlets 32 and dust exhaust ports 33 arranged at the periphery of the second air inlet 31 and respectively facing upwards and downwards, and a plurality of flow guiding air passages 34 connected to the second air inlet 31 at the center and spirally wound on the second air outlets 32 one by one, wherein the second air outlets 32 and the dust exhaust ports 33 are respectively located in the first cavity a and the third cavity C, and the dust exhaust ports 33 are funnel-shaped. The cyclone device 3 is provided with a plurality of first mounting plates 14 which are positioned between the first cavity A and the second cavity B and are used for mounting the cyclone device 3, and the first mounting plates 14 are obliquely arranged so that the second air outlets 32 face the first check valves 19. The cyclone device 3 is adopted to divide the interior of the machine case 1 into a first cavity A, a second cavity B and a third cavity C, when air flow enters the machine case 1 from the first air inlet 101, the air flow firstly enters the second air inlet 31 of the cyclone device 3 from the second cavity B, then enters a centrifugal cavity between the dust discharge port 33 and the second air outlet 32 along a plurality of flow guide air passages 34, when the air flow enters the funnel-shaped centrifugal cavity under the guidance of the spiral flow guide air passages 34, spiral vortex is generated, dust with particles larger than 0.02mm falls into the first dust collection box 6 at the bottom of the third cavity C from the dust discharge port 33 under the action of centrifugal force, and the air enters the first cavity A through the second air outlet 32 under the suction of the fan 2, so that the centrifugal separation and filtration of the air are realized.

By obliquely installing the cyclone device 3 in the chassis 1 and making the second air outlet 32 face the first one-way valve 19, when the air flow passes through the first one-way valve 19, the air flow enters the fourth cavity D and is located at the periphery of the filter vat 4, and the filter vat 4 is vertically installed in the chassis 1. The cyclone device 3 is obliquely arranged in the case 1, so that the second air outlet 32 of the cyclone device 3 can be obliquely oriented to the first one-way valve 19 on one side of the filter vat 4, and air flowing out of the cyclone device 3 can enter the filter vat 4 from the periphery of the filter vat 4 through the first one-way valve 19 rapidly, and meanwhile, the suction force generated by the fan 2 can be smoothly transferred to the cyclone device 3. Of course, the cyclone device 3 is a fine cyclone device, and can filter finer dust.

The first air inlet 101 is internally provided with a first filter screen 8 for filtering large particles, the first filter screen 8 is positioned between the first air inlet 101 and the second cavity B, and the first air inlet 101 is internally provided with an inlet cavity 10 for accommodating the large particles. The first filter screen 8 is used for intercepting large-particle filter residues such as chips doped in the air, so that the first layer of filtering is realized.

The machine case 1 comprises an upper machine case 11 and a lower machine case 12, wherein the fan 2 and the self-cleaning module 5 are positioned in the upper machine case 11, the cyclone device 3 and the filter vat 4 are positioned in the lower machine case 12, the first dust collection box 6 and the second dust collection box 7 are symmetrically arranged at the bottom of the lower machine case 12 and can be respectively pulled out to two sides, an inner shell 13 which is covered above the filter vat 4 and forms a fifth cavity E is arranged in the upper machine case 11, the fan 2 is arranged on the inner shell 13, and one end of the self-cleaning module 5 extends into the filter vat 4 through the inner shell 13. The filter vat 4 is a HEPA filter vat, the upper end outlet of the filter vat 4 is communicated with the fifth cavity E, the rotary back blowing device 51 of the self-cleaning module 5 stretches into the filter vat 4 from the upper end outlet of the filter vat 4, and after the air flowing out from the second air outlet 32 of the cyclone device 3 enters the first cavity A, after the air enters the fourth cavity D after passing through the first one-way valve 19, the air enters the filter vat 4 from the periphery of the filter vat 4 to realize the third filtering, at the moment, dust is intercepted and deposited on the peripheral side wall of the filter vat 4, and when the self-cleaning module 5 sprays high-pressure air flow into the filter vat 4, the dust deposited on the outer wall of the filter vat 4 is blown into the second dust collecting box 7 at the bottom of the second cavity B, thereby realizing the self-cleaning of the filter vat 4. The fan 2 adopts a permanent magnet brushless direct current motor, so that the efficiency is higher and the energy is saved.

The rear end face of the upper chassis 11 is provided with a bolt hole 111 for installing the silencing cover 16, and the silencing cover 16 is provided with a bolt block 161 which is matched with the bolt hole 111 and can be inserted and buckled, wherein the bolt hole 111 and the bolt block 161 are correspondingly arranged at two ends of the inner side of the silencing cover 16, and the silencing cover 16 is further provided with a first handle 162 which is convenient to lift. The front end face of the lower case 12 is provided with a visual panel 121 for observing the use condition of the filter vat 4, and two sides of the lower end of the lower case 12 are respectively provided with a first hasp 122 and a second hasp 123 for buckling the first dust collecting box 6 and the second dust collecting box 7, wherein the first hasp 122 and the second hasp 123 are at least provided with two, and respectively correspond to two sides of the first dust collecting box 6 and the second dust collecting box 7. The front end surface of the first dust collecting box 6 is bent to form a circle of flanging part 61, and the flanging part 61 is convenient for installing the first hasp 122 and is also convenient for drawing the first dust collecting box 6. The upper case 11 is hinged to the rear end of the lower case 12, a third hasp 125 and a fourth hasp 126 which are close to the front end and are used for closing and locking are arranged on two sides of the upper case 11 and the lower case 12, and a second handle 110 for opening and closing is further arranged on the front end face of the upper case 11.

In summary, the utility model has two working states, one is an air filtering part and the other is a self-cleaning filter vat, and the specific working modes are as follows:

The first, when air filters, inhale the air with dust through first air intake 101, intercept big article and flow back through first filter screen 8 in first air intake 101, the gas gets into second cavity B after the back flow, further, by the separation filtration of four sets of whirlwind devices 3 of slope to finer granule, the dust that the granule is greater than 0.01mm falls into third cavity C's first dust collection box 6 from dust discharge port 33, and the air that passes through two-layer prefilter, get into first cavity A through whirlwind device 3's second air outlet 32, and get into fourth cavity D after passing through first check valve 19, be equipped with fine filtration HEPA filter vat 4 in fourth cavity D, rotary airtight's rotatory blowback device 51 has been set up in filter vat 4, and set up second check valve 15 at fourth cavity D's rear, of course, first air outlet 102 department can increase HEPA filter vat again and satisfy harsh environmental requirement, and set up the dust collection box 7 that falls down in fourth cavity D behind the back flow back through fourth cavity D, the fourth cavity E is provided with the filter vat is connected with the fourth cavity F through the fourth cavity D, the purpose is further through the fourth cavity F that is passed through to the noise reduction device is more than the fourth cavity F, the noise reduction device is blown down, the air is passed through to the fourth cavity is more clean with the dust collector, the dust collector is accomplished through the fourth cavity is more, the purpose is accomplished through the filter dust collector is blown down, and the air is reduced dust collector is more is blown down, and the dust collector is more has the dust collector is more clean, and the dust collector is more has the dust collector is easy, and has dust and dust can be blown down.

Secondly, during feedback self-cleaning, the common compressed air is connected to the air storage bottle 52 after being filtered by the oil-water separator 55, the other end of the air storage bottle 52 is connected with the large-size air valve 54, the air valve 54 is controlled by the electromagnetic coil, two modes of timing air explosion and manual air explosion can be switched, when the air valve 54 is electrified, the valve is opened instantaneously, air in the air storage bottle 52 is instantaneously discharged and is flushed into the rotary blowback device 51 through the connecting hose 53, the rotary blowback device 51 is driven by pressure, the first cover plate 514 presses down the filter vat 4 to form a closed space, positive pressure is generated in the filter vat 4 by the compressed air, the filter vat 4 is comprehensively cleaned by matching with the rotary blowback device 51, the filter vat is kept smooth for a long time, the replacement frequency is reduced, and cost and time are saved.

It is understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims (10)

1. The novel self-cleaning air filtering equipment is characterized by comprising a machine case (1), a fan (2), a cyclone device (3), a filter vat (4), a self-cleaning module (5), and a first dust collecting box (6) and a second dust collecting box (7) which are arranged below the cyclone device (3) and the filter vat (4) and are used for receiving filter residues;

The cyclone device (3) divides the case (1) into a first cavity (A), a second cavity (B) and a third cavity (C) from top to bottom, and the second cavity (B) in the middle of the cyclone device (3) corresponds to the first air inlet (101) of the case (1);

A fourth cavity (D) and a sixth cavity (F) which are respectively used for accommodating the filter vat (4) and the self-cleaning module (5) are further arranged in the case (1), a fifth cavity (E) is arranged between the fourth cavity (D) and the sixth cavity (F) for communication, an inlet and an outlet of the fan (2) are respectively arranged in the fifth cavity (E) and the sixth cavity (F), a first one-way valve (19) is arranged between the first cavity (A) and the fourth cavity (D) for communication, and the sixth cavity (F) is communicated with a first air outlet (102) of the case (1).

2. The novel self-cleaning air filtering device according to claim 1, wherein the self-cleaning module (5) comprises a rotary back-blowing device (51) which is positioned in the filtering barrel (4) and can rotate, an air storage tank (52) which is arranged in the machine case (1), a connecting hose (53) which is used for connecting the air storage tank (52) and the rotary back-blowing device (51), an air valve (54) which is arranged on the connecting hose (53) and an oil-water separation device (55) which is arranged on a connecting pipe of the air storage tank (52) and an external air source.

3. The novel self-cleaning air filtering device as claimed in claim 2, wherein the rotary back-blowing device (51) comprises a supporting tube (511) which is connected with a hose (53) in a butt joint manner and extends into the filtering barrel (4), and a rotary jet pipe rack (512) which is rotatably arranged at the lower end of the supporting tube (511) and can jet air flow to the side, wherein at least two rows of jet holes (513) are arranged on the rotary jet pipe rack (512).

4. The novel self-cleaning air filtering device according to claim 3, wherein the support tube (511) is slidably sleeved with a first cover plate (514), the diameter of the first cover plate (514) is larger than that of a first communication hole between the fourth cavity (D) and the fifth cavity (E), a wind collecting cover (515) capable of being covered on the first cover plate (514) is arranged at the upper end of the support tube (511), a sleeve part (514A) capable of extending into the wind collecting cover (515) is arranged at the upper end of the first cover plate (514), an air flow is introduced into the wind collecting cover (515) on the tube wall of the support tube (511) to push the first cover plate (514) to downwards cover the pressure release hole (51A) of the first communication hole, and a reset spring (516) for jacking the first cover plate (514) to open the first communication hole is sleeved on the support tube (511).

5. The novel self-cleaning air filtering device according to claim 2, wherein the case (1) is further provided with a second one-way valve (15) which is positioned beside the filtering barrel (4) and is used for rapidly discharging gas when the rotary back blowing device (51) blows, the outer side of the second one-way valve (15) is provided with a silencing cover (16), the upper end of the silencing cover (16) is communicated with the sixth cavity (F), and the first air outlet (102) of the case (1) is positioned at the upper end of the silencing cover (16).

6. The novel self-cleaning air filtering device according to claim 2, wherein the air valve (54) is an electromagnetic valve and has two modes of switchable timing air explosion and manual air explosion, a selection switch (56) for switching the timing air explosion and the manual air explosion is arranged on the case (1), a timer (57) for controlling the air valve (54) to generate the air explosion at fixed time and a pulser (58) arranged beside the timer (57) are arranged in the case (1).

7. The novel self-cleaning air filtering device as set forth in any one of claims 1-6, wherein the cyclone device (3) comprises a second air inlet (31) located at the center and corresponding to the second cavity (B), a plurality of second air outlets (32) and dust discharging ports (33) arranged at the periphery of the second air inlet (31) and respectively facing upwards and downwards, and a plurality of diversion air passages (34) connected with the second air inlet (31) and spirally wound on the second air outlet (32) one by one, wherein the second air outlet (32) and the dust discharging ports (33) are respectively located in the first cavity (A) and the third cavity (C), and the dust discharging ports (33) are funnel-shaped.

8. A novel self-cleaning air filtering device as claimed in claim 7, wherein a plurality of cyclone devices (3) are arranged, a first mounting plate (14) which is positioned between the first cavity (A) and the second cavity (B) and is used for mounting the cyclone devices (3) is arranged in the case (1), and the first mounting plate (14) is obliquely arranged so that the second air outlet (32) faces to the first one-way valve (19).

9. The novel self-cleaning air filtering device as set forth in claim 7, wherein a first filter screen (8) for filtering large particles is disposed in the first air inlet (101), the first filter screen (8) is located between the first air inlet (101) and the second cavity (B), and an inlet chamber (10) for containing large particles is disposed in the first air inlet (101).

10. The novel self-cleaning air filtering device according to any one of claims 1 to 6, wherein the machine case (1) comprises an upper machine case (11) and a lower machine case (12), the fan (2) and the self-cleaning module (5) are located in the upper machine case (11), the cyclone device (3) and the filter drum (4) are located in the lower machine case (12), the first dust collecting box (6) and the second dust collecting box (7) are symmetrically installed at the bottom of the lower machine case (12) and can be pulled out to two sides respectively, an inner shell (13) which covers the filter drum (4) and forms a fifth cavity (E) is installed in the upper machine case (11), the fan (2) is installed on the inner shell (13), and one end of the self-cleaning module (5) extends into the filter drum (4) through the inner shell (13).