An indoor air filter

Abstract

The application discloses an indoor air filter and relates to the technical field of air treatment, which comprises a machine body and an air duct, and further comprises a first partition plate, a rotating drum mounted on the top of the first partition plate, two through openings formed in the outer wall of the rotating drum, a filter screen mounted in the through openings, a driving mechanism for driving the rotating drum to rotate, an air guide mechanism, a second partition plate, a linkage air control mechanism comprising an air cylinder mounted on the bottom of the second partition plate, a first piston mounted in the air cylinder and a lifting frame mounted on the top of the first piston. The air filter can filter air by exchanging two filter screens, solve the problem that the filter screen needs to be cleaned during shutdown in the prior art, guarantee the continuous use effect of the air filter, close the surface of the replaced filter screen by the cleaning mechanism, and timely direct the cleaned dust and impurities out by cooperating with the directional dust removal mechanism, so that the problem that the dust and impurities are easily reattached to the surface of the filter screen and are not easy to be completely cleaned during the cleaning of the filter screen is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to an indoor air filter. BACKGROUND

[0002] The air filter refers to an air filtering device, which is generally used in clean workshops, clean plants, laboratories and clean rooms, or used for dust prevention of electronic mechanical communication equipment.

[0003] In the existing indoor air filter, the filter screen needs to be disassembled for cleaning, and then reassembled after cleaning. During the disassembly and assembly process, the air filter cannot continue to be used. There are also cleaning of dust and impurities on the surface of the filter screen during the operation of the air filter. However, the cleaned dust and impurities are easy to reattach to the surface of the filter screen, resulting in poor cleaning effect of the surface of the filter screen. In addition, the cleaned dust and impurities are still in the air environment. If various filter layers are used to filter and treat the air, the dust and impurities in the air are easy to cause frequent replacement of the filter layer, resulting in high daily use cost of the air filter. SUMMARY

[0004] The purpose of the present application is to provide an indoor air filter to solve the above problems in the prior art.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: an indoor air filter, comprising a machine body and an air duct installed on the inner wall of one side of the machine body, further comprising:

[0006] A first partition plate is installed in the interior of the machine body, and a rotating drum is installed on the top of the first partition plate. Two through openings are formed on the outer wall of the rotating drum, and a filter screen is installed in the through openings;

[0007] A driving mechanism is installed on the top of the first partition plate for driving the rotating drum to rotate;

[0008] An air guide mechanism comprises an air extraction pipe installed in the interior of the first partition plate and a negative pressure fan installed in the interior of the air extraction pipe. The air extraction pipe is located in the interior of the rotating drum, and the air inlet end faces the air duct;

[0009] A second partition plate is installed in the interior of the machine body, and the top of the rotating drum is rotationally connected to the bottom of the second partition plate;

[0010] A linkage air control mechanism comprises an air cylinder installed on the bottom of the second partition plate, a first piston installed in the interior of the air cylinder, and a lifting frame installed on the top of the first piston;

[0011] A cleaning mechanism comprises a first housing installed on the inner wall of the other side of the machine body and an elastic telescopic scraper installed in the interior of the first housing. The bottom end of the lifting frame extends into the interior of the first housing and is fixed to the top of the elastic telescopic scraper.

[0012] The directional dust removal mechanism comprises a defective sealing cylinder fixed at the bottom of the second partition plate, a second shell fixed on the outer wall of one side of the defective sealing cylinder, and a tuyere installed in the second shell, and the outer wall of the defective sealing cylinder abuts against the inner wall of the rotating drum.

[0013] Further, the driving mechanism comprises a gear ring fixedly sleeved on the outside of the rotating drum and a motor installed at the bottom of the first partition plate, and the output end of the motor is fixedly connected with a gear, and the gear is engaged with the gear ring.

[0014] Further, the bottom of the air cylinder is provided with a damping spring, the top end of the damping spring is connected with the bottom of the first piston, one side of the top of the air cylinder is provided with an air inlet pipe, and the air inlet pipe is provided with a first one-way valve.

[0015] Further, the inside of the elastic telescopic scraper is provided with a dust guide port, and the bottom of the elastic telescopic scraper is provided with a dust guide hose.

[0016] The top and bottom of one end of the elastic telescopic scraper close to the second shell are provided with inclined grooves, and one end of the elastic telescopic scraper is matched with the outer wall of the filter screen; the elastic telescopic scraper comprises a sliding seat slidably connected in the first shell, a sliding groove formed in the other end of the sliding seat, and a sliding block slidably connected in the sliding groove, a plurality of springs are fixedly connected in the sliding groove, and the other end of the spring is fixedly connected with the outer wall of the sliding block.

[0017] Further, the top of the tuyere is fixedly connected with a driven rod, the top end of the driven rod extends to the outside of the second shell, and when the lifting frame moves downward and abuts against the top end of the driven rod, the driven rod and the tuyere move downward;

[0018] The bottom of the tuyere is provided with a linkage rod, the outside of the linkage rod is sleeved with a return spring, the top end of the return spring is fixedly connected with the bottom of the tuyere, the bottom end of the return spring is fixedly connected with the inner wall of the bottom of the second shell, and the bottom end of the linkage rod extends to the outside of the second shell.

[0019] The top of the tuyere is also provided with an air guide hose, the other end of the air guide hose is connected with the top of the air cylinder, and the air guide hose is provided with a solenoid valve.

[0020] Further, the inner wall of the bottom of the machine body is provided with a deep dust removal mechanism, the deep dust removal mechanism comprises a dust falling tank installed on the inner wall of the bottom of the machine body and a water control tank arranged on one side of the dust falling tank.

[0021] The bottom end of the dust guide hose extends to the inside of the dust falling tank.

[0022] A spraying assembly is installed on the inner wall of the top of the dust falling tank.

[0023] The inside of the water control tank is provided with a second piston, the bottom end of the linkage rod extends to the inside of the water control tank and is fixed to the top of the second piston, the top of the water control tank is provided with a water guide pipe, the other end of the water guide pipe is connected with the spray assembly, and a second one-way valve is arranged on the water guide pipe.

[0024] Further, an inner wall of the bottom of the machine body is further provided with a water storage tank, the top of the water control tank is connected with the bottom of the water storage tank through a water inlet pipe, and a third one-way valve is arranged on the water inlet pipe.

[0025] One side of the bottom of the machine body is provided with a sewage tank, the top of the sewage tank is provided with a sewage discharge pipe, and the sewage discharge pipe is connected with the dust falling tank.

[0026] Further, the top of the dust falling tank is provided with a backflow pipe, and the backflow pipe is connected with an air suction pipe.

[0027] The inner wall of the bottom of the machine body is further provided with a filter layer, and the bottom end of the air suction pipe is connected with the filter layer.

[0028] Compared with the prior art, the indoor air filter provided by the present application has the following beneficial effects:

[0029] 1. The two filter screens are exchanged to filter the air, thereby solving the problem of needing to stop the machine to clean the filter screen in the prior art, and ensuring the continuous use effect of the air filter.

[0030] 2. The surface of the replaced filter screen is closedly cleaned by the cleaning mechanism, and the dust and impurities cleaned are timely and directionally discharged by cooperating with the directional dust removal mechanism, thereby avoiding the problem that the dust and impurities are easily reattached to the surface of the filter screen and are not easy to be completely cleaned when the filter screen is cleaned.

[0031] 3. The dust and impurities directionally discharged can be sufficiently treated by the deep dust removal mechanism, the user only needs to regularly supplement water to the water storage tank and discharge the sewage in the sewage tank, the dust and impurities in the air are removed by the filter screen, the frequency of replacing the filter layer is effectively reduced, the dust and impurities are treated by water, and the daily use cost of the air filter is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0033] Figure 1 It is a first perspective view of the overall structure of the present application.

[0034] Figure 2 The second view of the overall structure of the application is shown in the figure;

[0035] Figure 3 The internal structure of the body of the application is shown in the figure;

[0036] Figure 4 The internal structure of the rotating drum of the application is shown in the figure;

[0037] Figure 5 The structure of the driving mechanism of the application is shown in the figure;

[0038] Figure 6 The structure of the cleaning mechanism and directional dust removal mechanism of the application is shown in the figure;

[0039] Figure 7 The structure of the deep dust removal mechanism of the application is shown in the figure.

[0040] Explanation of reference signs:

[0041] 1, body; 2, air duct; 3, first partition; 4, rotating drum; 5, filter screen; 6, air extraction pipe; 7, negative pressure fan; 8, second partition; 9, air cylinder; 10, first piston; 11, lifting frame; 12, first housing; 13, elastic telescopic scraper; 14, incomplete sealing cylinder; 15, second housing; 16, air nozzle; 17, gear ring; 18, motor; 19, gear; 20, damping spring; 21, air inlet pipe; 22, first check valve; 23, dust guide opening; 24, dust guide hose; 25, driven rod; 26, linkage rod; 27, return spring; 28, air guide hose; 29, electromagnetic valve; 30, dust fall tank; 31, water control tank; 32, second piston; 33, water guide pipe; 34, water storage tank; 35, sewage tank; 36, second check valve; 37, water inlet pipe; 38, third check valve; 39, backflow pipe; 40, filter layer; 41, spraying assembly; 42, sewage discharge pipe. DETAILED DESCRIPTION

[0042] In order for those skilled in the art to better understand the technical solutions of the application, the application will be further described in detail below with reference to the drawings.

[0043] Embodiment: please refer to Figure 1 - Figure 7 An indoor air filter comprises a body 1 and an air duct 2 installed on the inner wall of one side of the body 1, and further comprises a first partition 3 installed in the interior of the body 1, wherein the top of the first partition 3 is provided with a rotating drum 4, two through openings are formed in the outer wall of the rotating drum 4, and a filter screen 5 is installed in the interior of each through opening; an air guide mechanism comprises an air extraction pipe 6 installed in the interior of the first partition 3 and a negative pressure fan 7 installed in the interior of the air extraction pipe 6, wherein the air extraction pipe 6 is located in the interior of the rotating drum 4, and the air inlet end faces the air duct 2;

[0044] The air in the room is drawn into the inside of the air suction pipe 6 through the air duct 2 and the right filter screen 5 by starting the negative pressure fan 7, and the dust and impurities in the air are filtered by the filter screen 5.

[0045] A driving mechanism is installed on the top of the first partition plate 3 for driving the rotary drum 4 to rotate, and the driving mechanism comprises a gear ring 17 fixedly sleeved on the outside of the rotary drum 4 and a motor 18 installed on the bottom of the first partition plate 3, the output end of the motor 18 is fixedly connected with a gear 19, and the gear 19 is engaged with the gear ring 17;

[0046] When the right filter screen 5 needs to be replaced, the gear 19 is driven to rotate by controlling the motor 18, and the rotary drum 4 is driven to rotate 180° by the engagement between the gear 19 and the gear ring 17, so that the other filter screen 5 is rotated to the left side of the air duct 2, and then the filter screen 5 is replaced to filter the air.

[0047] A second partition plate 8 is installed in the inside of the machine body 1, and the top of the rotary drum 4 is rotationally connected with the bottom of the second partition plate 8;

[0048] A linkage air control mechanism comprises a pneumatic cylinder 9 installed on the bottom of the second partition plate 8, a first piston 10 installed in the inside of the pneumatic cylinder 9 and a lifting frame 11 installed on the top of the first piston 10, the bottom of the pneumatic cylinder 9 is installed with a damping spring 20, the top end of the damping spring 20 is connected with the bottom of the first piston 10, one side of the top of the pneumatic cylinder 9 is installed with an air inlet pipe 21, the air inlet pipe 21 is installed with a first one-way valve 22, the first one-way valve 22 is arranged so that the air outside can enter the inside of the pneumatic cylinder 9 through the air inlet pipe 21, and the air in the inside of the pneumatic cylinder 9 cannot be discharged through the air inlet pipe 21;

[0049] When the rotary drum 4 is rotated to the right opening and is completely disconnected with the air duct 2, the incomplete sealing cylinder 14 seals the opening, at this time, the rotary drum 4 is sealed, and along with the continuous operation of the negative pressure fan 7, the first piston 10 is driven to move downward along the inner wall of the pneumatic cylinder 9, the damping spring 20 is compressed, the air is drawn into the inside of the pneumatic cylinder 9 through the air inlet pipe 21, and the lifting frame 11 is driven to move downward at the same time;

[0050] After the other filter screen 5 is rotated to the left side of the air duct 2, the electromagnetic valve 29 is controlled to be opened, the first piston 10 is driven to slowly move upward by the rebound force of the damping spring 20, the air in the inside of the pneumatic cylinder 9 is gradually discharged through the air guide hose 28, and after the air in the inside of the pneumatic cylinder 9 is completely discharged, the electromagnetic valve 29 is controlled to be closed.

[0051] The cleaning mechanism comprises a first shell 12 mounted on the inner wall of the other side of the machine body 1, and an elastic telescopic scraper 13 mounted inside the first shell 12, the bottom end of the lifting frame 11 extends to the inside of the first shell 12, and is fixedly connected with the top of the elastic telescopic scraper 13, a dust guide hole 23 is formed in the inside of the elastic telescopic scraper 13, and a dust guide hose 24 is mounted on the bottom of the elastic telescopic scraper 13; the top and bottom of one end of the elastic telescopic scraper 13 close to the second shell 15 are provided with inclined grooves, and one end of the elastic telescopic scraper 13 is matched with the outer wall of the filter screen 5; the elastic telescopic scraper 13 comprises a sliding seat slidably connected in the first shell 12, a sliding groove formed in the other end of the sliding seat, and a sliding block slidably connected in the sliding groove, a plurality of springs are fixedly connected in the sliding groove, and the other ends of the springs are fixedly connected with the outer wall of the sliding block;

[0052] When the first piston 10 drives the lifting frame 11 to move downward, the elastic telescopic scraper 13 is driven to move downward along the outer wall of the rotating drum 4, when the right filter screen 5 rotates to the right side of the first shell 12, the one end of the elastic telescopic scraper 13 is abutted with the outer wall of the filter screen 5 through the elastic effect of the elastic telescopic scraper 13, when the lifting frame 11 moves upward, the elastic telescopic scraper 13 is driven to move upward along the outer wall of the filter screen 5, the dust and impurities on the outer wall of the filter screen 5 are scraped off, and when the inclined groove on the top of the elastic telescopic scraper 13 abuts with the upper edge of the through hole, the elastic telescopic scraper 13 moves rightward and separates from the filter screen 5 and abuts with the outer wall of the rotating drum 4, without affecting the subsequent rotation of the rotating drum 4.

[0053] The directional dust removal mechanism comprises a defective sealing cylinder 14 fixedly connected to the bottom of the second partition plate 8, a second shell 15 fixedly connected to the outer wall of one side of the defective sealing cylinder 14, and a tuyere 16 mounted in the second shell 15, the outer wall of the defective sealing cylinder 14 abuts with the inner wall of the rotating drum 4, the top of the tuyere 16 is fixedly connected with a driven rod 25, the top end of the driven rod 25 extends to the outside of the second shell 15, when the lifting frame 11 moves downward and abuts with the top end of the driven rod 25, the driven rod 25 and the tuyere 16 are driven to move downward; the bottom of the tuyere 16 is mounted with a linkage rod 26, the outside of the linkage rod 26 is sleeved with a return spring 27, the top end of the return spring 27 is fixedly connected with the bottom of the tuyere 16, the bottom end of the return spring 27 is fixedly connected with the inner wall of the bottom of the second shell 15, and the bottom end of the linkage rod 26 extends to the outside of the second shell 15; the top of the tuyere 16 is also mounted with a gas guide hose 28, the other end of the gas guide hose 28 is connected with the top of the air cylinder 9, and an electromagnetic valve 29 is mounted on the gas guide hose 28;

[0054] When the first piston 10 drives the lifting frame 11 to move downward, the lifting frame 11 abuts against the top end of the driven rod 25 after descending for a distance, and then drives the driven rod 25 to move downward, and the tuyere 16 and the linkage rod 26 move downward, and the reset spring 27 is compressed. Since the tuyere 16 starts to descend after the lifting frame 11 descends for a distance, the lower edge of the tuyere 16 is at the same horizontal level as the upper edge of the elastic telescopic scraper 13 after the tuyere 16 descends, so that the elastic telescopic scraper 13 moves upward synchronously when the lifting frame 11 moves upward. In the process of scraping the surface of the filter screen 5, the tuyere 16 is driven to move upward synchronously by the rebound force of the reset spring 27, and the lower edge of the tuyere 16 is at the same horizontal level as the upper edge of the elastic telescopic scraper 13, and then the air in the air cylinder 9 is blown to the top of the elastic telescopic scraper 13 through the air guide hose 28 and the tuyere 16, and the dust and impurities scraped are blown off from the surface of the filter screen 5, and the blown-off dust and impurities are directly discharged into the dust falling tank 30 through the dust guide hose 24.

[0055] The inner wall of the bottom of the machine body 1 is provided with a deep dust removal mechanism, which comprises a dust falling tank 30 installed on the inner wall of the bottom of the machine body 1 and a water control tank 31 arranged on one side of the dust falling tank 30. The bottom end of the dust guide hose 24 extends into the dust falling tank 30. The inner wall of the top of the dust falling tank 30 is provided with a spraying assembly 41. The dust falling tank 30 is provided with a second piston 32 in the inside. The bottom end of the linkage rod 26 extends into the inside of the water control tank 31 and is fixed to the top of the second piston 32. The water control tank 31 is provided with a water guide pipe 33 at the top, and the other end of the water guide pipe 33 is connected with the spraying assembly 41. The water guide pipe 33 is provided with a second one-way valve 36. The arrangement of the second one-way valve 36 allows water in the water control tank 31 to be supplied to the spraying assembly 41 through the water guide pipe 33, but water in the spraying assembly 41 cannot flow back to the water control tank 31 through the water guide pipe 33. The inner wall of the bottom of the machine body 1 is further provided with a water storage tank 34. The top of the water control tank 31 is connected with the bottom of the water storage tank 34 through a water feeding pipe 37. The water feeding pipe 37 is provided with a third one-way valve 38. The arrangement of the third one-way valve 38 allows water in the water storage tank 34 to enter the water control tank 31 through the water feeding pipe 37, but water in the water control tank 31 cannot flow back to the water storage tank 34 through the water feeding pipe 37. One side of the bottom of the machine body 1 is provided with a sewage tank 35. The top of the sewage tank 35 is provided with a sewage discharge pipe 42 connected with the dust falling tank 30. The top of the dust falling tank 30 is provided with a backflow pipe 39 connected with the air suction pipe 6. The inner wall of the bottom of the machine body 1 is further provided with a filter layer 40. The bottom end of the air suction pipe 6 is connected with the filter layer 40. The filter layer 40 can not only filter residual dust and impurities, but also adsorb bacteria in the air.

[0056] When the linkage rod 26 moves downward, the second piston 32 is driven to move downward along the inner wall of the water control tank 31, and the water in the water storage tank 34 is pumped into the water control tank 31 through the water inlet pipe 37. When the linkage rod 26 drives the second piston 32 to move upward, the water is supplied to the spray assembly 41 through the water guide pipe 33, and then the dust and impurities discharged into the dust fall tank 30 through the dust guide hose 24 are subjected to dust fall treatment by the spray assembly 41. The air after dust fall treatment enters the air suction pipe 6 through the backflow pipe 39, and is discharged into the filter layer 40 together with the air filtered by the filter screen 5 in the air suction pipe 6, for further filtering treatment.

[0057] Working principle: in use, through the start of negative pressure fan 7 will be indoor air through the air duct 2 and the right filter screen 5 into the exhaust pipe 6 inside, through the filter screen 5 on the dust impurities in the air filtering treatment, air filter long time operation, filter screen 5 surface will accumulate more dust impurities, resulting in the through speed of air is slow, through the control motor 18 drive gear 19 rotation, through the gear 19 and the gear 17 between the meshing effect, drive rotary drum 4 rotation 180 DEG, make another filter screen 5 rotation to the left side of the air duct 2, and then change filter screen 5 to filter air, in this process, when rotary drum 4 rotates to the right side of the mouth and air duct 2 is completely not connected, the incomplete sealing cylinder 14 and the mouth are closed, at this time, rotary drum 4 is closed, with the continuous operation of negative pressure fan 7, drive the first piston 10 along the inner wall of air cylinder 9 moves downward, damping spring 20 is compressed, through the air inlet pipe 21 will air into the air cylinder 9 inside, at the same time drive the lifting frame 11 moves downward, lifting frame 11 moves downward, drive the elastic telescopic scraper 13 along the outer wall of rotary drum 4 synchronous downward movement, when the right filter screen 5 rotates to the right side of the first housing 12, through the elastic effect of elastic telescopic scraper 13, make one end of elastic telescopic scraper 13 and the outer wall of filter screen 5 abut, at the same time, lifting frame 11 after descending a distance, with the top end of driven rod 25 abut, begin to drive driven rod 25 moves downward, air nozzle 16 and linkage rod 26 moves downward, reset spring 27 is compressed, because lifting frame 11 after descending a distance, air nozzle 16 begins to descend, therefore, air nozzle 16 after descending, its lower edge and the upper edge of elastic telescopic scraper 13 are at the same horizontal height, so that when lifting frame 11 moves upward, elastic telescopic scraper 13 moves upward synchronously, in the process of scraping dust on the surface of filter screen 5, through the rebound force of reset spring 27 drive air nozzle 16 synchronous upward, and the lower edge of air nozzle 16 and the upper edge of elastic telescopic scraper 13 are at the same horizontal height, then the air in the air cylinder 9 is blown to the top of elastic telescopic scraper 13 through air guide hose 28 and air nozzle 16, directional blowing off the dust impurities scraped from the surface of filter screen 5, the blown off dust impurities are directly discharged into dust fall tank 30 through dust guide hose 24, the dust impurities discharged into dust fall tank 30 are treated by dust fall assembly 41, the air after dust fall treatment enters into the exhaust pipe 6 through backflow pipe 39, and is discharged into filter layer 40 together with the air filtered by filter screen 5 in the exhaust pipe 6, for further filtering treatment of air.

[0058] It should be noted that the device structure and the drawings of the present application mainly describe the principle of the present application, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design principle, and the specific of the power mechanism, the power supply system and the control system can be clearly known on the premise that the above-mentioned technical personnel understands the principle of the application, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the technical personnel in the field; the above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary technical personnel in the art, the described embodiments can be modified in various ways without deviating from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. An indoor air filter, comprising a body (1) and an air duct (2) mounted on an inner wall of one side of the body (1), characterized in that: Also includes: A first partition (3) is installed inside the machine body (1); a rotating drum (4) is installed on the top of the first partition (3); two openings are provided on the outer wall of the rotating drum (4); and a filter (5) is installed inside the openings; A driving mechanism, mounted on the top of the first partition (3), for driving the rotating drum (4) to rotate; An air guide mechanism, comprising an exhaust pipe (6) installed inside the first partition (3) and a negative pressure fan (7) installed inside the exhaust pipe (6), wherein the exhaust pipe (6) is located inside the rotating drum (4) and has an air inlet end facing the air duct (2); a second partition (8) mounted inside the machine body (1), wherein the top of the rotating drum (4) is rotatably connected to the bottom of the second partition (8); A linked air control mechanism comprising an air cylinder (9) mounted on the bottom of the second partition (8), a first piston (10) mounted inside the air cylinder (9), and a lifting frame (11) mounted on the top of the first piston (10); A cleaning mechanism, comprising a first shell (12) mounted on the inner wall of the other side of the body (1) and an elastic telescopic scraper (13) mounted inside the first shell (12); the bottom end of the lifting frame (11) extends to the inside of the first shell (12) and is fixedly connected to the top of the elastic telescopic scraper (13); a dust guide port (23) is provided inside the elastic telescopic scraper (13); a dust guide hose (24) is installed at the bottom of the elastic telescopic scraper (13); the top and bottom of the elastic telescopic scraper (13) near one end of the second shell (15) are both provided with inclined grooves, and one end of the elastic telescopic scraper (13) is adapted to the outer wall of the filter screen (5); A directional dust removal mechanism comprising a broken sealing cylinder (14) fixed to the bottom of the second partition (8), a second shell (15) fixed to an outer wall of one side of the broken sealing cylinder (14), and an air nozzle (16) installed inside the second shell (15); When the rotating drum (4) rotates until the right opening is completely disconnected from the air duct (2), the incomplete sealing cylinder (14) and the opening are sealed. At this time, the rotating drum (4) is sealed, and as the negative pressure fan (7) continues to operate, the first piston (10) is driven to move downward along the inner wall of the air cylinder (9).

2. An indoor air filter according to claim 1, characterized in that: The driving mechanism comprises a gear ring (17) fixedly sleeved on the outside of the rotating drum (4) and a motor (18) mounted on the bottom of the first partition (3); an output end of the motor (18) is fixedly connected to a gear (19), and the gear (19) is meshed with the gear ring (17).

3. An indoor air filter according to claim 2, characterized in that: A damping spring (20) is installed at the bottom of the air cylinder (9), and the top end of the damping spring (20) is connected to the bottom end of the first piston (10). An air intake pipe (21) is installed on one side of the top of the air cylinder (9), and a first one-way valve (22) is installed on the air intake pipe (21).

4. An indoor air filter according to claim 3, characterized in that: A driven rod (25) is fixed to the top of the air nozzle (16), and the top end of the driven rod (25) extends to the outside of the second shell (15). When the lifting frame (11) moves downward and abuts against the top end of the driven rod (25), the driven rod (25) and the air nozzle (16) are driven to move downward; A linkage rod (26) is installed at the bottom of the air nozzle (16), a return spring (27) is sleeved on the outside of the linkage rod (26), the top end of the return spring (27) is fixedly connected to the bottom of the air nozzle (16), the bottom end of the return spring (27) is fixedly connected to the inner wall of the bottom of the second shell (15), and the bottom end of the linkage rod (26) extends to the outside of the second shell (15); An air guide hose (28) is also installed on the top of the air nozzle (16), the other end of the air guide hose (28) is connected to the top of the air cylinder (9), and a solenoid valve (29) is installed on the air guide hose (28).

5. An indoor air filter according to claim 4, characterized in that: A deep dust removal mechanism is installed on the inner wall of the bottom of the machine body (1), and the deep dust removal mechanism comprises a dust reduction tank (30) installed on the inner wall of the bottom of the machine body (1) and a water control tank (31) arranged on one side of the dust reduction tank (30); The bottom end of the dust guide hose (24) extends to the interior of the dust suppression tank (30); A spray assembly (41) is installed on the inner wall of the top of the dust suppression tank (30); A second piston (32) is installed inside the water control tank (31), the bottom end of the linkage rod (26) extends into the interior of the water control tank (31) and is fixedly connected to the top of the second piston (32), a water guide pipe (33) is installed on the top of the water control tank (31), the other end of the water guide pipe (33) is connected to the spray assembly (41), and a second one-way valve (36) is installed on the water guide pipe (33).

6. An indoor air filter according to claim 5, characterized in that: A water storage tank (34) is also installed on the inner wall of the bottom of the body (1), and the top of the water control tank (31) and the bottom of the water storage tank (34) are connected via an upper water pipe (37), and a third one-way valve (38) is installed on the upper water pipe (37); A sewage tank (35) is installed on one side of the bottom of the machine body (1), a sewage pipe (42) is installed on the top of the sewage tank (35), and the sewage pipe (42) is connected to the dust suppression tank (30).

7. An indoor air filter according to claim 6, characterized in that: A return pipe (39) is installed on the top of the dust suppression tank (30), and the return pipe (39) is connected to the exhaust pipe (6); A filter layer (40) is also installed on the inner wall of the bottom of the machine body (1), and the bottom end of the exhaust pipe (6) is connected to the filter layer (40).

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