Dust filtering device for indoor decoration

Abstract

The invention relates to the technical field of air filtering devices, in particular to an indoor decoration dust filtering device which comprises an air inducing assembly. The air inducing assembly comprises a bottom cover, a rotating frame and a plurality of windward belts. The rotating frame comprises a top cover, a rotating ring, a plurality of fixing rods and a plurality of supporting plates. The multiple fixing rods are arranged between the rotating ring and the top cover. The multiple supporting plates are arranged between the top cover and the bottom cover. And the windward belt sleeves the supporting plate and the fixing rod. According to the dust filtering device for indoor decoration, the rotating ring and the bottom cover rotate relatively, the inclination degree of the windward belt is changed, then the air outlet angle is changed, the air outlet direction is flexibly adjusted, and when the rotating ring and the bottom cover rotate relatively, the windward belt can rotate automatically, so that the air outlet angle is adjusted on the basis that the inclination degree of the windward belt is changed. The service life of the windward belt can be prolonged by replacing the windward side of the windward belt.

Description

Technical Field

[0001] The invention relates to the technical field of air filtering devices, and in particular to a dust filtering device for indoor decoration. Background Art

[0002] During the indoor decoration process, a large amount of dust will be generated. This dust will not only pollute the indoor environment, but also pose a serious threat to the health of construction workers and subsequent residents, such as causing respiratory diseases and allergic reactions. It may also affect the quality of the decoration project, such as adhering to the undried wall paint surface, resulting in uneven paint surface. Therefore, dust filtration devices play an extremely important role in indoor decoration scenarios.

[0003] Air purifiers are one of the most commonly used dust filtering devices. Air purifiers in the prior art usually adopt a multi-layer filtering structure, which can effectively filter dust in the air to a certain extent and remove most of the particulate matter, playing a positive role in improving indoor air quality. However, when the existing air purifier is working, dust easily accumulates on the surface of its fan blades, which not only causes the blade surface to become dirty and reduces the air outlet effect, but also increases the wear and damage rate of the blades, reducing the service life of the blades. Summary of the invention

[0004] The present invention provides a dust filtering device for indoor decoration, so as to solve the problem that dust is easily accumulated on the blade surface of the existing dust filtering device when in use, which not only causes the blade surface to become dirty and reduces the air outlet effect, but also increases the speed of blade wear and damage and reduces the service life of the blade.

[0005] A dust filtering device for indoor decoration of the present invention adopts the following technical scheme: a dust filtering device for indoor decoration, comprising an air outlet box, a shell and an air induction assembly; the shell is installed in the air outlet box, the air induction assembly is installed in the shell and can rotate relative to the shell around a first direction, the first direction is a vertical direction; the air induction assembly comprises a bottom cover, a rotating frame and a plurality of windward belts; the rotating frame is located above the bottom cover, and the rotating frame comprises a top cover, a rotating ring, a plurality of fixed rods and a plurality of support plates; the rotating ring is arranged along the first direction, is coaxial with the bottom cover and can rotate relative to the bottom cover; the fixed rod is arranged along the first direction, and the plurality of fixed rods are evenly distributed around the first direction between the rotating ring and the top cover, and are fixed between the rotating ring and the top cover; the support plate is arranged along the first direction. The two directions are arranged, the second direction is a horizontal direction, and a plurality of support plates are evenly distributed around the first direction between the top cover and the bottom cover; the two ends of the support plate along the second direction are respectively called the inner end and the outer end, and the inner end is located on the side of the outer end in the second direction close to the vertical center axis of the rotating ring; the windward belt is annular, the support plates, the fixing rods and the windward belts are arranged one by one, the fixing rods are located on the side of the corresponding support plate in the second direction away from the vertical center axis of the rotating ring, each windward belt is sleeved on the corresponding support plate and the corresponding fixing rod, and the relative rotation of the rotating ring and the bottom cover can make the inner end of the support plate revolve and rotate relative to its outer end around the first direction, and can make the windward belt rotate around the first direction.

[0006] Further, the inner end of the support plate can slide on the bottom cover along the second direction and can rotate relative to the bottom cover around the first direction, and the outer end of the support plate is hinged to the rotating ring.

[0007] Furthermore, a plurality of first ratchet teeth are evenly distributed on the inner circumferential wall surface of the windward belt around a first direction, a plurality of second ratchet teeth are evenly distributed on the outer circumferential wall surface of the support plate around the first direction, the second ratchet teeth are elastically retractable teeth, and the first ratchet teeth are meshed with the second ratchet teeth; a plurality of third ratchet teeth are evenly distributed on the outer circumferential wall surface of the fixed rod around the first direction, the third ratchet teeth are elastically retractable teeth, and the third ratchet teeth are meshed with the first ratchet teeth; the relative rotation of the rotating ring and the bottom cover can enable the support plate to rotate relative to the fixed rod around the vertical center axis of the fixed rod, and when the support plate rotates in the forward direction relative to the fixed rod around the vertical center axis of the fixed rod, the windward belt can rotate around the first direction.

[0008] Furthermore, the plurality of second ratchet teeth are all located on one side of the inner end of the support plate and are distributed in an arc shape.

[0009] Furthermore, a plurality of collecting shells are evenly distributed around the first direction on the upper end of the rotating ring, and the plurality of collecting shells are arranged in one-to-one correspondence with the plurality of windward belts, and each collecting shell is located on a side of the corresponding windward belt in the second direction away from the vertical central axis of the rotating ring, and the collecting shell has two contact ends, and the two contact ends are arranged in sequence in the rotation direction of the windward belt, a gap is left between one of the contact ends and the windward belt, and a brush is arranged on the other contact end; the collecting shell is filled with filter cotton; a suction port is defined between the filter cottons, and a plurality of connecting ports are evenly distributed around the first direction on the top cover, and the plurality of connecting ports are arranged in one-to-one correspondence with the plurality of suction ports, and each connecting port is connected to the corresponding suction port, and the connecting port can provide negative pressure to the suction port.

[0010] Furthermore, it also includes a purification box, and the air outlet box is located above the purification box and is connected to the purification box.

[0011] Furthermore, an air outlet is provided on the air outlet box, and an air inlet and an air exhaust port are provided on the shell body. The air inlet is arranged toward the purification box, and the air exhaust port is arranged toward the air outlet.

[0012] Furthermore, a plurality of waist-shaped grooves are provided on the bottom cover, the plurality of waist-shaped grooves are evenly distributed on the bottom cover around a first direction, the plurality of waist-shaped grooves are arranged along a second direction, the plurality of waist-shaped grooves are arranged one by one correspondingly to the plurality of support plates, and the inner end of each support plate is installed in the corresponding waist-shaped groove.

[0013] Furthermore, a control motor is fixedly arranged at the upper end of the bottom cover, a rotating wheel is fixedly arranged at the output end of the control motor, a follower ring is arranged on the outer peripheral wall surface of the rotating ring, and the follower ring is meshed with the rotating wheel.

[0014] Furthermore, a driving motor is arranged on the shell, an output shaft of the driving motor extends into the shell and is fixedly connected to the top cover, and an output torque of the driving motor is greater than an output torque of the control motor.

[0015] The beneficial effects of the present invention are as follows: the dust filtering device for indoor decoration of the present invention changes the inclination of the windward belt by making the rotating ring and the bottom cover rotate relative to each other, thereby changing the wind outlet angle and flexibly adjusting the direction of the wind outlet, which helps to optimize the distribution of the airflow, make the airflow more uniform or orient it according to actual needs, and improve the air circulation effect. When the rotating ring and the bottom cover rotate relative to each other, the windward belt can rotate on its own, and then on the basis of changing the inclination of the windward belt, the windward surface of the windward belt can be replaced, which can prevent the windward belt from being subjected to airflow pressure and dust deposition at the same position for a long time, thereby reducing the speed of wear and damage of the windward belt and extending the service life of the windward belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a dust filtering device for indoor decoration of the present invention; Figure 2 A schematic diagram of an air induction mechanism of an embodiment of a dust filtering device for indoor decoration of the present invention; Figure 3 A cross-sectional view of a housing of an embodiment of a dust filtering device for indoor decoration of the present invention; Figure 4 A schematic diagram of an air induction component of an embodiment of a dust filtering device for indoor decoration of the present invention; Figure 5 for Figure 4 The enlarged view of point A in the middle; Figure 6 A cross-sectional view of an air induction component of an embodiment of a dust filtering device for indoor decoration of the present invention; Figure 7 for Figure 6 The enlarged view of point B in the middle; Figure 8 This is a schematic diagram of a rotating frame of an embodiment of a dust filtering device for indoor decoration of the present invention with the fixing rod removed; Fig. 9 for Figure 8 Enlarged view of point C in the middle; Fig.10 A schematic diagram of a bottom cover of an embodiment of a dust filtering device for indoor decoration of the present invention; Fig.11 The present invention is a cross-sectional view of the upper structure of an air induction assembly of an embodiment of a dust filtering device for indoor decoration of the present invention.

[0018] In the figure: 100, purification box; 200, air outlet box; 201, air outlet; 300, shell; 301, air inlet; 302, exhaust outlet; 310, active motor; 320, bottom cover; 321, control motor; 322, waist-shaped groove; 330, rotating frame; 331, top cover; 332, rotating ring; 333, fixing rod; 334, supporting plate; 335, second ratchet; 336, third ratchet; 337, mounting hole; 338, connecting port; 339, rotating rod; 340, windward belt; 341, first ratchet; 350, collecting shell; 351, suction port. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] An embodiment of a dust filtering device for indoor decoration of the present invention is as follows Figures 1 to 11 shown.

[0021] A dust filtering device for indoor decoration includes a purification box 100, an air outlet box 200 and an air induction mechanism. The purification box 100 and the air outlet box 200 are arranged in sequence in a first direction, the first direction is a vertical direction, and the air outlet box 200 is located above the purification box 100 and is connected to the purification box 100. A filter assembly is arranged in the purification box 100. The filter assembly is a prior art, including a HEPA filter, an activated carbon filter and other filter structures for filtering dust, which will not be described here.

[0022] An air outlet 201 is provided on the air outlet box 200. The air induction mechanism is installed in the air outlet box 200, and the air induction mechanism includes a shell 300 and an air induction assembly. The shell 300 is fixedly installed in the air outlet box 200, and an air induction port 301 and an air outlet 302 are provided on the shell 300. The air induction port 301 is arranged toward the purification box 100, and the air outlet 302 is arranged toward the air outlet 201. The air induction assembly is installed in the shell 300 and can rotate around a first direction relative to the shell 300. The air induction assembly includes a bottom cover 320, a rotating frame 330 and a plurality of windward belts 340. The bottom cover 320 is an annular structure, and the rotating frame 330 is located above the bottom cover 320. The rotating frame 330 includes a top cover 331, a rotating ring 332, a plurality of fixed rods 333 and a plurality of support plates 334. The rotating ring 332 is arranged along the first direction, coaxial with the bottom cover 320 and can rotate relative to the bottom cover 320.

[0023] The fixing rods 333 are arranged along the first direction, and a plurality of fixing rods 333 are evenly distributed around the first direction between the rotating ring 332 and the top cover 331, and are fixed between the rotating ring 332 and the top cover 331. The support plate 334 is arranged along the second direction, which is a horizontal direction, and a plurality of support plates 334 are evenly distributed around the first direction between the top cover 331 and the bottom cover 320. The two ends of the support plate 334 along the second direction are respectively referred to as the inner end and the outer end, and the inner end is located on the side of the outer end in the second direction close to the vertical central axis of the rotating ring 332. The windward belt 340 is annular, and the support plate 334, the fixing rod 333 and the windward belt 340 are arranged in a one-to-one correspondence. The fixing rod 333 is located on the side of the corresponding support plate 334 away from the vertical center axis of the rotating ring 332 in the second direction. Each windward belt 340 is sleeved on the corresponding support plate 334 and the corresponding fixing rod 333. The relative rotation of the rotating ring 332 and the bottom cover 320 can make the inner end of the support plate 334 revolve around the first direction relative to its outer end, and can make the windward belt 340 rotate around the first direction.

[0024] Specifically, a plurality of mounting holes 337 are provided on the top cover 331, and the plurality of mounting holes 337 are evenly distributed around the first direction on the lower end surface of the top cover 331. The plurality of mounting holes 337 are arranged in a one-to-one correspondence with the plurality of fixing rods 333, and each fixing rod 333 is fixedly installed in the corresponding mounting hole 337.

[0025] This embodiment provides an air induction mechanism. When in use, the air induction component located in the shell 300 is first driven to rotate around a first direction, so that wind (which may contain dust) can enter the shell 300 from the air inlet, and after passing through multiple windward belts 340, it is discharged from the air outlet 201 through the exhaust port 302.

[0026] Then, the rotating ring 332 is driven to rotate relative to the bottom cover 320, and the inner end of the support plate 334 is caused to revolve around the first direction relative to the outer end thereof, and the windward belt 340 is driven to rotate, so as to change the inclination of the windward belt 340, and then change the wind outlet angle, and flexibly adjust the wind outlet direction, which is helpful to optimize the distribution of the airflow, and the airflow improves the air circulation effect. When the rotating ring 332 and the bottom cover 320 rotate relative to each other, the windward belt 340 can rotate around the first direction, and then on the basis of changing the inclination of the windward belt 340, the windward surface of the windward belt 340 is replaced, which can prevent the windward belt 340 from being subjected to airflow pressure and dust deposition at the same position for a long time, thereby reducing the speed of wear and damage of the windward belt 340 and extending the service life of the windward belt 340.

[0027] In this embodiment, the inner end of the support plate 334 can slide on the bottom cover 320 along the second direction and can rotate relative to the bottom cover 320 around the first direction, and the outer end of the support plate 334 is hinged to the rotating ring 332 .

[0028] Specifically, a plurality of waist-shaped grooves 322 are provided on the bottom cover 320, and the plurality of waist-shaped grooves 322 are evenly distributed on the bottom cover 320 along the first direction, and the plurality of waist-shaped grooves 322 are arranged along the second direction, and the plurality of waist-shaped grooves 322 are arranged one by one correspondingly with the plurality of support plates 334, and the inner end of each support plate 334 is installed in the corresponding waist-shaped groove 322, so that the inner end of the support plate 334 can slide on the bottom cover 320 along the second direction and can rotate relative to the bottom cover 320 about the first direction. More specifically, a rotating rod 339 is provided at the inner end of the support plate 334, and the rotating rod 339 is installed in the corresponding waist-shaped groove 322.

[0029] In this embodiment, a control motor 321 is fixedly provided at the upper end of the bottom cover 320, a rotating wheel is fixedly provided at the output end of the control motor 321, and a follower ring is provided on the outer peripheral wall surface of the rotating ring 332, and the follower ring is meshed with the rotating wheel. More specifically, the rotating wheel is a gear, and the follower ring is a gear ring; or, the rotating wheel is a friction wheel, and the follower ring is a friction ring. Further, two control motors 321 are provided. The stability of the rotation of the rotating ring 332 is improved by providing two control motors 321.

[0030] The housing 300 is provided with an active motor 310, and the output shaft of the active motor 310 extends into the housing 300 and is fixedly connected to the top cover 331. The output torque of the active motor 310 is greater than the output torque of the control motor 321.

[0031] When the active motor 310 is started, the top cover 331 can be driven to rotate. Since the fixed rod 333 is fixed between the top cover 331 and the rotating ring 332, the top cover 331 will drive the fixed rod 333 and the rotating ring 332 to rotate synchronously. Since the follower ring on the rotating ring 332 is meshed with the rotating wheel on the control motor 321, and the bottom cover 320 is fixedly connected to the control motor 321, when the rotating ring 332 rotates, the rotating ring 332 will drive the bottom cover 320 to rotate synchronously through the control motor 321. When the control motor 321 is not started, the rotating ring 332 and the bottom cover 320 are relatively stationary, so that the inner end and the outer end of the support plate 334 remain relatively stationary, that is, the entire air induction assembly is in a relatively stationary state, so that the entire air induction assembly can rotate around the first direction.

[0032] When the control motor 321 is started, the control motor 321 will tend to drive the rotating ring 332 to rotate and drive the entire rotating frame 330 to rotate. However, since the output torque of the active motor 310 is greater than the output torque of the control motor 321, the rotation of the rotating frame 330 will be restricted, and then the control motor 321 will drive the bottom cover 320 to rotate relative to the rotating frame 330 through the engagement of the follower ring and the rotating wheel, that is, the rotating ring 332 and the bottom cover 320 will rotate relative to each other. The rotation of the bottom cover 320 will drive the inner end of the support plate 334 to revolve around the first direction relative to its outer end, and drive the windward belt 340 to rotate, thereby changing the inclination degree of the windward belt 340.

[0033] Specifically, the housing 300 includes an upper shell and a lower shell, the upper shell is located above the lower shell, the upper shell and the lower shell are fixedly connected, and the output shaft of the active motor 310 extends into the upper shell and is fixedly connected to the top cover 331. The air inlet 301 is opened on the lower shell, and the air outlet 302 is defined by the upper shell and the lower shell.

[0034] In this embodiment, a plurality of first ratchet teeth 341 are evenly distributed on the inner circumferential wall surface of the windward belt 340 around the first direction, and a plurality of second ratchet teeth 335 are evenly distributed on the outer circumferential wall surface of the support plate 334 around the first direction. The second ratchet teeth 335 are elastic telescopic teeth, and the plurality of second ratchet teeth 335 are all located on one side of the inner end of the support plate 334 and are distributed in an arc shape. The first ratchet teeth 341 mesh with the second ratchet teeth 335. A plurality of third ratchet teeth 336 are evenly distributed on the outer circumferential wall surface of the fixing rod 333 around the first direction, and the third ratchet teeth 336 are elastic telescopic teeth, and the plurality of third ratchet teeth 336 are all arranged on the side away from the support plate 334 along the second direction and are distributed in an arc shape. The third ratchet teeth 336 mesh with the first ratchet teeth 341. The relative rotation of the rotating ring 332 and the bottom cover 320 can enable the support plate 334 to rotate relative to the fixed rod 333 around the vertical center axis of the fixed rod 333, and when the support plate 334 rotates relative to the fixed rod 333 around the vertical center axis of the fixed rod 333, the windward belt 340 can rotate around the first direction.

[0035] When the rotating ring 332 rotates relative to the bottom cover 320 and drives the inner end of the support plate 334 to swing relative to its outer end, since the outer end of the support plate 334 is hinged to the rotating ring 332 and the fixing rod 333 is fixed to the rotating ring 332, the fixing rod 333 is stationary relative to the support plate 334 between the support plate 334 and the fixing rod 333, that is, the support plate 334 rotates relative to the fixing rod 333 around the vertical center axis of the fixing rod 333. Fig.11 As shown, the clockwise rotation of the support plate 334 relative to the fixing rod 333 around the vertical center axis of the fixing rod 333 is the positive rotation, and the counterclockwise rotation of the support plate 334 relative to the fixing rod 333 around the vertical center axis of the fixing rod 333 is the negative rotation.

[0036] When the support plate 334 rotates in the positive direction relative to the fixed rod 333 around the vertical center axis of the fixed rod 333 (clockwise revolution), the support plate 334 will apply a pulling force to the left side of the windward belt 340. The rotation of the support plate 334 will push the windward belt 340 to rotate clockwise through the second ratchet 335. At this time, the first ratchet 341 on the inner side of the windward belt 340 can rotate relative to the third ratchet 336 on the fixed rod 333, so that the third ratchet 336 can be extended and retracted, that is, the windward belt 340 and the support plate 334 are integrated, and rotate clockwise relative to the fixed rod 333, and the windward belt 340 can rotate in the positive direction around the first direction.

[0037] When the support plate 334 rotates in reverse relative to the fixed rod 333 around the vertical center axis of the fixed rod 333 (revolves counterclockwise), the rotation of the support plate 334 will cause the second ratchet 335 on the support plate 334 to rotate relative to the first ratchet 341 on the support belt, the windward belt 340 and the fixed rod 333 remain stationary, and the support plate 334 idles. That is, in the process of controlling the motor 321 to start and causing the rotating ring 332 and the bottom cover 320 to rotate relative to each other, the windward belt 340 intermittently rotates to achieve a change in the windward surface. And when the windward belt 340 rotates, the first ratchet 341 on the windward belt 340, when cooperating with the second ratchet 335 and the third ratchet 336, can cause the windward belt 340 to vibrate to a certain extent, thereby reducing the dust adhesion rate.

[0038] In another possible embodiment, a plurality of collecting shells 350 are evenly distributed around the first direction on the upper end of the rotating ring 332, and the plurality of collecting shells 350 are arranged one-to-one with the plurality of windward belts 340. Each collecting shell 350 is located on the side of the corresponding windward belt 340 away from the vertical central axis of the rotating ring 332 in the second direction. The collecting shell 350 has two contact ends, and the two contact ends are arranged in sequence in the rotation direction of the windward belt 340. A gap is left between one of the contact ends and the windward belt 340, so that dust can enter the collecting shell 350 from the gap, and a brush is arranged on the other contact end. The collecting shell 350 is filled with filter cotton. Suction ports 351 are defined between the filter cottons. A plurality of connecting ports 338 are evenly distributed around the first direction on the top cover 331, and the plurality of connecting ports 338 are arranged one-to-one with the plurality of suction ports 351. Each connecting port 338 is connected to the corresponding suction port 351, and the connecting port 338 can provide negative pressure to the suction port 351.

[0039] By setting the collecting shell 350, the air induced component rotates around the first direction relative to the shell 300, so that wind (which may contain dust) enters the shell 300 from the air inlet, and after passing through multiple windward belts 340, is discharged from the air outlet 201 through the exhaust port 302. When the wind flows from the windward belt 340 to the exhaust port 302, it will flow out from the circumferential position of the windward belt 340, so that the airflow has a faster flow rate when passing through the connecting port 338, and negative pressure is generated at the connecting port 338. The negative pressure generated at the connecting port 338 will cause a pressure difference in the collecting shell 350, and a part of the airflow and dust can enter the collecting shell 350 from the gap and be filtered and collected by the filter cotton. The brush can prevent the dust from flowing out, so that the dust can remain in the collecting shell 350.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust filtering device for indoor decoration, characterized in that: The invention comprises an air outlet box, a shell and an air induction assembly; the shell is installed in the air outlet box, the air induction assembly is installed in the shell and can rotate relative to the shell around a first direction, the first direction being a vertical direction; the air induction assembly comprises a bottom cover, a rotating frame and a plurality of windward belts; the rotating frame is located above the bottom cover, and the rotating frame comprises a top cover, a rotating ring, a plurality of fixing rods and a plurality of supporting plates; the rotating ring is arranged along a first direction, is coaxial with the bottom cover and can rotate relative to the bottom cover; the fixing rod is arranged along a first direction, and a plurality of fixing rods are evenly distributed around the first direction between the rotating ring and the top cover, and are fixed between the rotating ring and the top cover; the supporting plate is arranged along a second direction, the second direction being a horizontal direction, and a plurality of supporting plates are arranged along a second direction. The plates are evenly distributed around the first direction between the top cover and the bottom cover; the two ends of the support plate along the second direction are respectively called the inner end and the outer end, and the inner end is located on the side of the outer end close to the vertical center axis of the rotating ring in the second direction; the windward belt is annular, the support plate, the fixing rod and the windward belt are arranged one by one, the fixing rod is located on the side of the corresponding support plate in the second direction away from the vertical center axis of the rotating ring, each windward belt is sleeved on the corresponding support plate and the corresponding fixing rod, and the relative rotation of the rotating ring and the bottom cover can make the inner end of the support plate revolve and rotate relative to its outer end around the first direction, and can make the windward belt rotate around the first direction.

2. A dust filtering device for indoor decoration according to claim 1, characterized in that: The inner end of the support plate can slide on the bottom cover along the second direction and can rotate relative to the bottom cover around the first direction, and the outer end of the support plate is hinged to the rotating ring.

3. A dust filtering device for indoor decoration according to claim 2, characterized in that: A plurality of first ratchet teeth are evenly distributed on the inner circumferential wall surface of the windward belt around a first direction, a plurality of second ratchet teeth are evenly distributed on the outer circumferential wall surface of the support plate around the first direction, the second ratchet teeth are elastically retractable teeth, and the first ratchet teeth are meshed with the second ratchet teeth; a plurality of third ratchet teeth are evenly distributed on the outer circumferential wall surface of the fixed rod around the first direction, the third ratchet teeth are elastically retractable teeth, and the third ratchet teeth are meshed with the first ratchet teeth; the relative rotation of the rotating ring and the bottom cover can make the support plate rotate relative to the fixed rod around the vertical center axis of the fixed rod, and when the support plate rotates forward relative to the fixed rod around the vertical center axis of the fixed rod, the windward belt can rotate around the first direction.

4. A dust filtering device for indoor decoration according to claim 3, characterized in that: The plurality of second ratchet teeth are all located on one side of the inner end of the support plate and are distributed in an arc shape.

5. The dust filtering device for indoor decoration according to claim 1, characterized in that: The upper end of the rotating ring is evenly distributed with multiple collecting shells around the first direction, and the multiple collecting shells are arranged in one-to-one correspondence with the multiple windward belts. Each collecting shell is located on the side of the corresponding windward belt in the second direction away from the vertical central axis of the rotating ring. The collecting shell has two contact ends, and the two contact ends are arranged in sequence in the rotation direction of the windward belt, a gap is left between one of the contact ends and the windward belt, and a brush is arranged on the other contact end; the collecting shell is filled with filter cotton; suction ports are defined between the filter cottons, and the top cover is evenly distributed with multiple connecting ports around the first direction, and the multiple connecting ports are arranged in one-to-one correspondence with the multiple suction ports, each connecting port is connected to the corresponding suction port, and the connecting port can provide negative pressure to the suction port.

6. The dust filtering device for indoor decoration according to claim 1, characterized in that: It also includes a purification box, and an air outlet box is located above the purification box and is connected to the purification box.

7. A dust filtering device for indoor decoration according to claim 6, characterized in that: An air outlet is provided on the air outlet box, and an air inlet and an air exhaust port are provided on the shell body. The air inlet is arranged toward the purification box, and the air exhaust port is arranged toward the air outlet.

8. The dust filtering device for indoor decoration according to claim 2, characterized in that: A plurality of waist-shaped grooves are provided on the bottom cover, and the plurality of waist-shaped grooves are evenly distributed around the first direction on the bottom cover, and the plurality of waist-shaped grooves are arranged along the second direction. The plurality of waist-shaped grooves are arranged correspondingly to the plurality of support plates, and the inner end of each support plate is installed in the corresponding waist-shaped groove.

9. The dust filtering device for indoor decoration according to claim 1, characterized in that: A control motor is fixedly arranged on the upper end of the bottom cover, a rotating wheel is fixedly arranged on the output end of the control motor, a follower ring is arranged on the outer peripheral wall surface of the rotating ring, and the follower ring is meshed with the rotating wheel.

10. A dust filtering device for indoor decoration according to claim 9, characterized in that: An active motor is arranged on the shell, an output shaft of the active motor extends into the shell and is fixedly connected to the top cover, and an output torque of the active motor is greater than an output torque of the control motor.

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