A filter for indoor air purification

Abstract

The present invention discloses a filter screen for indoor air purification, comprising a shell, an air inlet, an air outlet and a filter screen assembly. The filter screen assembly is provided, and impurities in the air are filtered through a filter screen structure between a first drum and a second drum. The first drum and the second drum are driven to rotate synchronously by an active synchronous wheel and a driven synchronous wheel of a driving structure, so that the filter screen roll wound on the outer side of the first drum is unwound, and the filter screen roll is wound up by the second drum, and the position of the filter screen roll after use is wound up, so that the unused filter screen roll part is moved to between the air inlet and the air outlet for air filtering, and the filtering effect of the filter screen can be ensured without disassembling and cleaning the filter screen, thereby reducing the replacement frequency of the filter screen and thus reducing the workload of the staff, and there is no need to stop the use of the air purifier to move and replace the position of the filter screen, thereby ensuring the purification effect of the indoor air.

Description

Technical Field

[0001] The invention relates to the field of filter screens, in particular to a filter screen for indoor air purification. Background Art

[0002] With the continuous development of my country's economy, people's living standards are constantly improving. As a result, indoor air pollution is also becoming increasingly serious, seriously affecting people's work and life, and even endangering people's health. Air purifiers are generally used to purify indoor air. The existing air purifiers are equipped with corresponding filters inside. After a long time of use, a lot of dirt will accumulate on the filter.

[0003] At present, a Chinese patent with announcement number CN204555095U discloses an air purifier with easy-to-remove filter. When the first filter needs to be removed, it is only necessary to press the elastic plate to make the protrusion disengage from the groove, and then the first container can be opened by rotating the shaft to remove the first filter. In this way, the first filter can be easily removed for cleaning. However, compared with public places such as shopping malls and chess and card rooms, in order to ensure the indoor air quality of the device, indoor air purifiers are used frequently, which makes the filter of the air purifier easy to be blocked. The filter needs to be disassembled and cleaned regularly. Frequent cleaning of the filter increases the workload of the staff. If the filter is not cleaned in time, it is easy to affect the ventilation effect and air purification effect of the air purifier, and the use of the air purifier needs to be stopped after disassembly. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a filter screen for indoor air purification.

[0005] The present invention is implemented in this way: a filter for indoor air purification is constructed, the device includes a shell and a filter assembly, an air inlet and an air outlet are respectively arranged in the middle of the left and right sides of the shell, the filter assembly is installed inside the shell, the filter assembly includes a supporting structure, a filter structure and a driving structure, the filter structure is installed on the right side of the supporting structure, the right end of the supporting structure is connected to the driving structure, the supporting structure is fixed to the left side of the shell, the filter structure is arranged between the air inlet and the air outlet, and the driving structure is fixed to the right side of the shell.

[0006] Preferably, the supporting structure includes a fixed plate, a first supporting assembly and a second supporting assembly, the first supporting assembly and the second supporting assembly are respectively installed on the upper and lower sides of the right end of the fixed plate, the right ends of the first supporting assembly and the second supporting assembly are respectively connected to the driving structure, and the upper and lower ends of the filter screen structure are respectively mounted on the outside of the first supporting assembly and the second supporting assembly.

[0007] Preferably, the filter screen structure includes a first drum, a filter screen roll and a second drum, the bottom end of the filter screen roll is wound around the outside of the first drum, and the other end of the filter screen roll is fixedly connected to the outer wall of the second drum, and the first drum and the second drum are respectively mounted on the outside of the first support assembly and the second support assembly.

[0008] Preferably, the driving structure includes a protective shell, a support baffle, a reducer, a motor, an active synchronous wheel, a synchronous belt, a driven synchronous wheel, a second connecting shaft and a connecting plate. A support baffle is vertically fixed in the middle of the protective shell, a reducer is installed on the top of the right end of the support baffle, and a motor is installed on the right end of the reducer. The left end of the reducer is connected to the center of the active synchronous wheel through a rotating shaft, and the bottom of the active synchronous wheel rotates synchronously with the driven synchronous wheel through a synchronous belt. The centers of the left ends of the active synchronous wheel and the driven synchronous wheel are respectively connected to connecting plates through the second connecting shaft, and the left ends of the two connecting plates are respectively connected to the first supporting assembly and the second supporting assembly, and the left end of the protective shell is fixedly connected to the outer shell.

[0009] Preferably, the first support assembly and the second support assembly have the same structure, and the second support assembly includes a rotation limiting structure, a first connecting shaft, a support bearing, a limit plate and a support tube, the right end of the rotation limiting structure is connected to the first connecting shaft, a support bearing is mounted on the middle part of the outer side of the first connecting shaft, the right end of the first connecting shaft is fixedly connected to the center of the limit plate, the right end of the limit plate is fixedly connected to the support tube, the rotation limiting structure is fixed to the left side wall of the fixed plate, the support bearing is embedded in the right side wall of the fixed plate, and the right end of the support tube and the connecting plate are plugged into each other.

[0010] Preferably, the rotation limiting structure includes a fixed shell, a first knob, a rotating shaft, a brake disc, a brake rubber plate, a light rod, a movable plate, a bidirectional screw and a second knob. A first knob is provided in the middle of the left end of the fixed shell, and the right end of the first knob is connected to the rotating shaft. The rotating shaft transversely passes through the center of the brake disc, and is fixedly connected to the rotating shaft inside the brake disc. Brake rubber plates are provided on the upper and lower sides of the brake disc, a light rod is vertically provided on the outer side of the brake rubber plate, and the outer side of the light rod passes through the fixed shell and extends out, the middle part of the light rod is fixedly connected to one end of the movable plate, and a bidirectional screw is vertically penetrated on the inner side of the other end of the movable plate, the inner wall of the movable plate is threadedly connected to the screw, the top end of the bidirectional screw rotates concentrically with the second knob through a coupling, the fixed shell is fixed to the left side wall of the fixed plate, and the right end of the rotating shaft is concentrically connected to the first connecting shaft through a coupling.

[0011] Preferably, the support tube includes a straight tube, a movable arc plate, a protrusion, a limit rod, a spring and a plug. Movable arc plates are respectively arranged on opposite sides of the straight tube. A protrusion is fixed on the outer side of the movable arc plate, and the protrusion extends through the straight tube. A limit rod passes through the movable arc plate. A spring is mounted on the outer wall of the limit rod, and the two movable arc plates are elastically connected by the spring. Both ends of the limit rod are fixed to the inner wall of the straight tube. A plug is arranged at the center of the right end of the straight tube. The left end of the straight tube is fixedly connected to the limit plate, and the right end of the plug is plugged into the connecting plate.

[0012] Preferably, the first connecting shaft, the supporting bearing, the first knob, the rotating shaft, the straight tube, the plug, the second connecting shaft and the connecting plate are arranged with their centers in the same straight line.

[0013] Preferably, the polished rod is arranged in parallel with the bidirectional screw, and the threads on both sides of the bidirectional screw are arranged with positive and negative threads, and the polished rod is fitted with the inner wall of the fixed shell.

[0014] Preferably, the left and right sides of the protrusion are inclined.

[0015] The present invention has the following advantages: The present invention provides a filter screen for indoor air purification through improvement, which has the following improvements compared with similar devices:

[0016] The filter net for indoor air purification described in the present invention is provided with a filter net assembly, and the filter net assembly adopts a filter net structure, and the air is initially filtered through the filter net roll of the filter net structure, and the filter net roll is wound on the outside of a first roll, and the end of the first roll is connected to the second roll, and the impurities in the air are filtered through the filter net structure between the first roll and the second roll, and a driving structure is provided, and the active synchronous wheel and the driven synchronous wheel of the driving structure drive the first roll and the second roll to rotate synchronously, so that the filter net roll wound on the outside of the first roll is unwound, and the filter net roll is rolled up by the second roll, and the position of the filter net roll after use is rolled up, so that the unused filter net roll part is moved to between the air inlet and the air outlet for air filtering, and the filtering effect of the filter net can be ensured without disassembling and cleaning the filter net, thereby reducing the frequency of replacing the filter net, thereby reducing the workload of the staff, and there is no need to stop the use of the air purifier casing to move and replace the position of the filter net, thereby ensuring the purification effect of the indoor air.

[0017] The filter net for indoor air purification described in the present invention is provided with a supporting structure, and the first reel and the second reel are supported by the supporting tubes of the first supporting assembly and the second supporting assembly, and a rotation limiting structure is provided at the left end of the supporting tube. The braking rubber plate of the rotation limiting structure is brought into contact with the braking disc, thereby increasing the force required for the rotation of the braking disc, thereby increasing the force required for the rotation of the straight tube, thereby preventing the first reel and the second reel from easily rotating by themselves before installation, causing the filter net to become loose, and by plugging the plugs at the right ends of the straight tubes of the first supporting assembly and the second supporting assembly into the connecting plate of the driving structure, the installation of the supporting structure and the filter net structure can be completed, thereby facilitating the disassembly and replacement of the filter net structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a right side cross-sectional view of the internal structure of the present invention;

[0020] Figure 3 is a cross-sectional view of the filter assembly structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the support structure of the present invention;

[0022] Figure 5 is a front view of the support structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the filter screen of the present invention;

[0024] Figure 7 is a cross-sectional view of the internal structure of the driving structure of the present invention;

[0025] Figure 8 is a cross-sectional view of the second support assembly structure of the present invention;

[0026] Fig. 9 is a cross-sectional view of the rotation limiting structure of the present invention;

[0027] Fig.10 is a left side cross-sectional view of the rotation limiting structure of the present invention;

[0028] Fig.11 is a cross-sectional view of the support tube structure of the present invention;

[0029] Fig.12 The present invention Fig.11 A partial enlarged view of area A.

[0030] Among them: shell-1, air inlet-2, air outlet-3, filter assembly-4, support structure-41, filter structure-42, drive structure-43, fixed plate-411, first support assembly-412, second support assembly-413, first reel-421, filter reel-422, second reel-423, protective shell-431, support partition-432, reducer-433, motor-434, active synchronous wheel-435, synchronous belt-436, driven synchronous wheel-437, second connecting shaft-438, connecting plate-439, rotation limiting structure- 4131, the first connecting shaft -4132, the supporting bearing -4133, the limiting plate -4134, the supporting tube -4135, the fixing shell -41311, the first knob -41312, the rotating shaft -41313, the brake disc -41314, the brake rubber plate -41315, the bare rod -41316, the movable plate -41317, the bidirectional screw -41318, the second knob -41319, the straight tube -41351, the movable arc plate -41352, the bump -41353, the limiting rod -41354, the spring -41355, and the plug -41356. DETAILED DESCRIPTION

[0031] The following will be combined with the attached Figure 1-12 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0032] Embodiment 1;

[0033] See also Figure 1-2 A filter for indoor air purification of the present invention comprises a shell 1 and a filter assembly 4. An air inlet 2 and an air outlet 3 are respectively arranged in the middle of the left and right sides of the shell 1. The filter assembly 4 is installed inside the shell 1.

[0034] See also Figure 3 A filter for indoor air purification of the present invention, the filter assembly 4 includes a supporting structure 41, a filter structure 42 and a driving structure 43, the filter structure 42 is installed on the right side of the supporting structure 41, the right end of the supporting structure 41 is connected to the driving structure 43, the supporting structure 41 is fixed to the left side of the outer shell 1, the filter structure 42 is arranged between the air inlet 2 and the air outlet 3, and the driving structure 43 is fixed to the right side of the outer shell 1.

[0035] See also Figure 4-5The present invention relates to a filter net for indoor air purification, wherein the support structure 41 comprises a fixed plate 411, a first support assembly 412 and a second support assembly 413, wherein the first support assembly 412 and the second support assembly 413 are respectively installed on the upper and lower sides of the right end of the fixed plate 411, and the right ends of the first support assembly 412 and the second support assembly 413 are respectively connected to the driving structure 43, and the upper and lower ends of the filter net structure 42 are respectively mounted on the outside of the first support assembly 412 and the second support assembly 413.

[0036] See also Figure 6 The present invention provides a filter for indoor air purification, the filter structure 42 includes a first drum 421, a filter roll 422 and a second drum 423, the bottom end of the filter roll 422 is wound around the outside of the first drum 421, and the other end of the filter roll 422 is fixedly connected to the outer wall of the second drum 423, the first drum 421 and the second drum 423 are respectively mounted on the outside of the first support assembly 412 and the second support assembly 413.

[0037] See also Figure 7 , a filter screen for indoor air purification of the present invention, the driving structure 43 includes a protective shell 431, a supporting baffle 432, a reducer 433, a motor 434, an active synchronous wheel 435, a synchronous belt 436, a driven synchronous wheel 437, a second connecting shaft 438 and a connecting plate 439, a supporting baffle 432 is vertically fixed in the middle of the protective shell 431, a reducer 433 is installed on the top of the right end of the supporting baffle 432, a motor 434 is installed on the right end of the reducer 433, the left end of the reducer 433 is connected to the center of the active synchronous wheel 435 through a rotating shaft, the bottom of the active synchronous wheel 435 rotates synchronously with the driven synchronous wheel 437 through a synchronous belt 436, the left ends of the active synchronous wheel 435 and the driven synchronous wheel 437 are respectively connected to the connecting plate 439 through the second connecting shaft 438, and the left ends of the two connecting plates 439 are respectively connected to the first supporting assembly 412 and the second supporting assembly 413, and the left end of the protective shell 431 is fixedly connected to the shell 1.

[0038] See also Figure 8, a filter screen for indoor air purification of the present invention, the first support assembly 412 and the second support assembly 413 have the same structure, the second support assembly 413 includes a rotation limiting structure 4131, a first connecting shaft 4132, a support bearing 4133, a limit plate 4134 and a support tube 4135, the right end of the rotation limiting structure 4131 is connected to the first connecting shaft 4132, the middle part of the outer side of the first connecting shaft 4132 is provided with a support bearing 4133, the right end of the first connecting shaft 4132 is fixedly connected to the center of the limit plate 4134, the right end of the limit plate 4134 is fixedly connected to the support tube 4135, the rotation limiting structure 4131 is fixed to the left side wall of the fixed plate 411, the support bearing 4133 is embedded in the right side wall of the fixed plate 411, the right end of the support tube 4135 is plugged into the connecting plate 439, the first connecting shaft 4132, the supporting bearing 4133, the first knob 41312, the rotating shaft 41313, the straight pipe 41351, the plug 41356, the second connecting shaft 438 and the connecting plate 439 are arranged in the same straight line, so that when the active synchronous wheel 435 and the driven synchronous wheel 437 rotate, they rotate through the second connecting shaft 438 and the connecting plate 439 center, the connecting plate 439 drives the straight pipe 41351 to rotate, and then drives the first reel 421 and the second reel 423 of the filter screen structure 42 to rotate, and the brake rubber plate 41315 contacts the brake disc 41314 to increase the force required for the rotation of the brake disc 41314, thereby increasing the force required for the rotation of the straight pipe 41351, thereby preventing the first reel 421 and the second reel 423 from rotating easily before installation, causing the filter screen roll 422 to loosen.

[0039] See also Figure 9-10The invention relates to a filter screen for indoor air purification, wherein the rotation limiting structure 4131 comprises a fixed shell 41311, a first knob 41312, a rotating shaft 41313, a brake disc 41314, a brake rubber plate 41315, a light rod 41316, a movable plate 41317, a bidirectional screw 41318 and a second knob 41319. The first knob 41312 is disposed at the middle of the left end of the fixed shell 41311. The first knob 41312 The right end is connected to the rotating shaft 41313, the rotating shaft 41313 horizontally passes through the center of the brake disc 41314, and the inside of the brake disc 41314 is fixedly connected to the rotating shaft 41313, the brake disc 41314 is provided with a brake rubber plate 41315 on both the upper and lower sides, and a light rod 41316 is vertically provided on the outer side of the brake rubber plate 41315, and the outer side of the light rod 41316 passes through the fixed shell 41311 and extends out, and the middle part of the light rod 41316 is connected to the movable One end of the movable plate 41317 is fixedly connected, and a bidirectional screw 41318 vertically penetrates the inner side of the other end of the movable plate 41317, the inner wall of the movable plate 41317 is threadedly connected with the screw 41318, the top of the bidirectional screw 41318 rotates concentrically with the second knob 41319 through a coupling, the fixed shell 41311 is fixed to the left side wall of the fixed plate 411, and the right end of the rotating shaft 41313 is concentrically connected with the first connecting shaft 4132 through a coupling. The rod 41316 is arranged in parallel with the bidirectional screw 41318, and the threads on both sides of the bidirectional screw 41318 are arranged in positive and negative threads. The light rod 41316 fits against the inner wall of the fixed shell 41311, which limits the movement trajectory of the light rod 41316, and then limits the movement trajectory of the brake rubber plate 41315, so that the bidirectional screw 41318 drives the movable plate 41317 connected to the two brake rubber plates 41315 to contract or expand.

[0040] See also Figure 11-12The present invention provides a filter screen for indoor air purification, wherein a support tube 4135 comprises a straight tube 41351, a movable arc plate 41352, a protrusion 41353, a limiting rod 41354, a spring 41355 and a plug 41356. The opposite sides of the straight tube 41351 are respectively provided with movable arc plates 41352, the outer side of the movable arc plate 41352 is fixed with a protrusion 41353, and the protrusion 41353 extends through the straight tube 41351, the movable arc plate 41352 is penetrated by the limiting rod 41354, the outer wall of the limiting rod 41354 is sleeved with a spring 41355, and the two movable arc plates 41352 are elastically connected by the spring 41355, and the limiting rod Both ends of 41354 are fixed to the inner wall of the straight tube 41351, a plug 41356 is provided at the center of the right end of the straight tube 41351, the left end of the straight tube 41351 is fixedly connected to the limit plate 4134, the right end of the plug 41356 is plugged into the connecting plate 439, and the left and right sides of the protrusion 41353 are inclined, so that when the first reel 421 and the second reel 423 are inserted into the outer wall of the straight tube 41351, the first reel 421 and the second reel 423 squeeze the protrusion 41353 to make the protrusion 41353 shrink inward, so as to avoid the protrusion 41353 supporting the first reel 421 and the second reel 423 and affecting the connection between the first reel 421 and the second reel 423 and the straight tube 41351.

[0041] Embodiment 2:

[0042] The filter net for indoor air purification of the present invention has a smooth surface of the limit rod 41354, and the inner wall of the movable arc plate 41352 is in contact with the limit rod 41354, and the moving trajectory of the movable arc plate 41352 is limited by the limit rod 41354. The width of the plug 41356 gradually decreases from left to right, so that the plug 41356 and the connecting plate 439 can be easily connected.

[0043] The present invention provides a filter screen for indoor air purification through improvement, and its working principle is as follows:

[0044] First, before use, the filter screen structure 42 needs to be installed. When installing the filter screen structure 42, first take out the support structure 41, and then respectively put the first roll 421 and the second roll 423 of the filter screen structure 42 on the outside of the straight tube 41351 of the first support assembly 412 and the second support assembly 413. Since the left and right sides of the protrusion 41353 are inclined, when the first roll 421 and the second roll 423 are inserted into the outer wall of the straight tube 41351, the first roll 421 and the second roll 423 squeeze the protrusion 413. 53 makes the protrusion 41353 shrink inwards, and the protrusion 41353 drives the movable arc plate 41352 to shrink inwards along the limit rod 41354 and the compression spring 41355. After the first reel 421 and the second reel 423 are sleeved on the outside of the straight tube 41351, the elastic potential energy generated by the spring 41355 pushes the movable arc plate 41352 to expand, and the movable arc plate 41352 drives the protrusion 41353 to extend outwards to support the inner walls of the first reel 421 and the second reel 423, so that the first reel 421 and the second reel 423 are installed;

[0045] Secondly, the first knobs 41312 of the rotation limiting structure 4131 on the left side of the first supporting assembly 412 and the second supporting assembly 413 are rotated respectively, and the first knob 41312 drives the rotating shaft 41313, the brake disc 41314, the first connecting shaft 4132, the limiting plate 4134 and the supporting tube 4135 to rotate, thereby driving the first reel 421 or the second reel 423 set on the outer side of the supporting tube 4135 to rotate, and the two first knobs 41312 on the left side of the first supporting assembly 412 and the second supporting assembly 413 are rotated respectively, so that the first reel 421 and the second reel 423 are rotated respectively to tighten the filter roll 422, and then the second knobs 41319 of the rotation limiting structure 4131 on the left side of the first supporting assembly 412 and the second supporting assembly 413 are rotated respectively, and the second knobs 41319 of the rotation limiting structure 4131 on the left side of the first supporting assembly 412 and the second supporting assembly 413 are rotated respectively. 319 drives the bidirectional screw 41318 to rotate. Since the light rod 41316 and the bidirectional screw 41318 are arranged in parallel, and the threads on both sides of the bidirectional screw 41318 are arranged in positive and negative teeth, the light rod 41316 fits with the inner wall of the fixed shell 41311, restricting the movement trajectory of the light rod 41316, and then restricting the movement trajectory of the brake rubber plate 41315, so that the two-way screw 41318 drives the movable plate 41317 connected with the two brake rubber plates 41315 to shrink, and then the two brake rubber plates 41315 shrink and fit with the brake disc 41314, increasing the force required for the rotation of the brake disc 41314, and then increasing the force required for the rotation of the straight pipe 41351, preventing the first reel 421 and the second reel 423 from rotating easily before installation, causing the filter screen roll 422 to be loose;

[0046] Third, the support structure 41 and the filter structure 42 are then inserted into the housing 1, and the plug 41356 at the right end of the straight pipe 41351 of the first support assembly 412 and the second support assembly 413 is plugged into the connecting plate 439 of the driving structure 43, and the installation of the support structure 41 and the filter structure 42 is completed;

[0047] Fourth, when in use, the device is installed in the required air purifier, and the outdoor air enters the housing 1 through the air inlet 2, is filtered by the filter roll 422, and then is introduced into the room through the air outlet 3 to purify the indoor air;

[0048] Fifth, after the filter mesh roll 422 has been used for a period of time, the filter mesh roll 422 is easily clogged by impurities. The motor 434 is controlled to generate power, and the output speed is slowed down by the reducer 433, and the active synchronous wheel 435 is driven to rotate at the center of the circle. The active synchronous wheel 435 drives the driven synchronous wheel 437 to rotate synchronously through the synchronous belt 436. The active synchronous wheel 435 and the driven synchronous wheel 437 respectively drive the support tube 41353 of the first support assembly 412 and the second support assembly 413 to rotate, so that the first reel 421 and the second reel 423 are rotated synchronously and wound around The filter roll 422 outside the first roll 421 is unwound, and the filter roll 422 is reeled in by the second roll 423, and the position of the used filter roll 422 is reeled in, so that the unused part of the filter roll 422 is moved to between the air inlet 2 and the air outlet 3 for air filtering, and the filtering effect of the filter can be ensured without disassembling and cleaning the filter, reducing the replacement frequency of the filter, thereby reducing the workload of the staff, and there is no need to stop the use of the air purifier to move and replace the position of the filter, thereby ensuring the purification effect of the indoor air;

[0049] Sixth, when the filter structure 42 needs to be disassembled, the support structure 41 only needs to be taken out from the left side of the shell 1, and the filter structure 42 can be taken out synchronously, and the filter structure 42 can be disassembled and replaced. The disassembly and assembly operation of the filter structure 42 is simple and convenient.

[0050] The present invention provides an indoor air purification filter through improvement, by setting a filter assembly 4, the filter assembly 4 adopts a filter structure 42, the air is initially filtered through a filter roll 422 of the filter structure 42, and the filter roll 422 is wound around the outside of a first roll 421, the end of the first roll 421 is connected to the second roll 423, and the impurities in the air are filtered through the filter structure 42 between the first roll 421 and the second roll 423, and a driving structure 43 is set, through the driving structure 43 The active synchronous wheel 435 and the driven synchronous wheel 437 drive the first reel 421 and the second reel 423 to rotate synchronously, so that the filter roll 422 wound on the outside of the first reel 421 is unwound, and the filter roll 422 is reeled by the second reel 423, and the position of the used filter roll 422 is reeled, so that the unused part of the filter roll 422 is moved to between the air inlet 2 and the air outlet 3 for air filtering, and the filtering effect of the filter can be ensured without disassembling and cleaning the filter, thereby reducing the frequency of replacing the filter. The air purifier can be used to move and replace the filter screen without stopping the use of the air purifier. The purification effect of the indoor air is guaranteed. The support structure 41 is provided. The first reel 421 and the second reel 423 are supported by the support tube 41353 of the first support assembly 412 and the second support assembly 413. A rotation limiting structure 4131 is provided at the left end of the support tube 41353. By connecting the brake rubber plate 41315 of the rotation limiting structure 4131 with the brake disc 41314, the first reel 421 and the second reel 423 are supported. The contact increases the force required for the brake disc 41314 to rotate, thereby increasing the force required for the straight tube 41351 to rotate, preventing the first reel 421 and the second reel 423 from rotating on their own before installation, causing the filter roll 422 to become loose, and by plugging the plug 41356 at the right end of the straight tube 41351 of the first support assembly 412 and the second support assembly 413 with the connecting plate 439 of the drive structure 43, the installation of the support structure 41 and the filter structure 42 can be completed, making it easy to disassemble and replace the filter structure 42.

[0051] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A filter net for indoor air purification, comprising a housing (1), wherein the housing (1) is provided with an air inlet (2) and an air outlet (3) in the middle of the left and right sides respectively; Features: The invention also comprises a filter assembly (4), the filter assembly (4) being installed inside the housing (1), the filter assembly (4) comprising a support structure (41), a filter structure (42) and a drive structure (43), the filter structure (42) being installed on the right side of the support structure (41), the right end of the support structure (41) being connected to the drive structure (43), the support structure (41) being fixed to the left side of the housing (1), the filter structure (42) being arranged between the air inlet (2) and the air outlet (3), the drive structure (43) being fixed to the right side of the housing (1): the support structure (41) comprising a fixing plate (411), a first supporting assembly (412) and a second supporting assembly (413), the first supporting assembly (412) and the second supporting assembly (413) being installed on the upper and lower sides of the right end of the fixing plate (411), the right ends of the first supporting assembly (412) and the second supporting assembly (413) being connected to the drive structure (43), the upper and lower sides of the filter structure (42) being connected to the drive structure (43), The first support assembly (412) and the second support assembly (413) are respectively sleeved on the outside of the first support assembly (412) and the second support assembly (413); the first support assembly (412) and the second support assembly (413) have the same structure; the second support assembly (413) comprises a rotation limiting structure (4131), a first connecting shaft (4132), a support bearing (4133), a limit plate (4134) and a support tube (4135); the right end of the rotation limiting structure (4131) is connected to the first connecting shaft (4132); the first connecting shaft (4133) A support bearing (4133) is sleeved on the middle part of the outer side of the connecting shaft (4132); the right end of the first connecting shaft (4132) is fixedly connected to the center of the limiting plate (4134); the right end of the limiting plate (4134) is fixedly connected to the support tube (4135); the rotation limiting structure (4131) is fixed to the left side wall of the fixing plate (411); the support bearing (4133) is embedded in the right side wall of the fixing plate (411); and the right end of the support tube (4135) is plugged into the connecting plate (439);The rotation limiting structure (4131) comprises a fixed shell (41311), a first knob (41312), a rotating shaft (41313), a brake disc (41314), a brake rubber plate (41315), a bare rod (41316), a movable plate (41317), a bidirectional screw (41318) and a second knob (41319). The first knob (41312) is arranged at the middle of the left end of the fixed shell (41311). The right end of the first knob (41312) is connected to the rotating shaft (41313). The rotating shaft (41313) passes through the center of the brake disc (41314) transversely. The inside of the brake disc (41314) is fixedly connected to the rotating shaft (41313). The brake disc (41314) is provided with brakes on both the upper and lower sides. A rubber plate (41315), a polished rod (41316) is vertically arranged on the outside of the brake rubber plate (41315), and the outside of the polished rod (41316) penetrates the fixed shell (41311) and extends out, the middle of the polished rod (41316) is fixedly connected to one end of the movable plate (41317), and a bidirectional screw (41318) is vertically penetrated on the inside of the other end of the movable plate (41317), the inner wall of the movable plate (41317) is threadedly connected to the screw (41318), the top end of the bidirectional screw (41318) rotates concentrically with the second knob (41319) through a coupling, the fixed shell (41311) is fixed to the left side wall of the fixed plate (411), and the right end of the rotating shaft (41313) is concentrically connected to the first connecting shaft (4132) through a coupling.; 2. The filter screen for indoor air purification according to claim 1, characterized in that: The filter screen structure (42) comprises a first reel (421), a filter screen roll (422) and a second reel (423); the bottom end of the filter screen roll (422) is wound around the outside of the first reel (421), and the other end of the filter screen roll (422) is fixedly connected to the outer wall of the second reel (423); the first reel (421) and the second reel (423) are respectively sleeved on the outside of the first support assembly (412) and the second support assembly (413).

3. The filter screen for indoor air purification according to claim 1, characterized in that: The driving structure (43) comprises a protective shell (431), a supporting baffle (432), a reducer (433), a motor (434), an active synchronous wheel (435), a synchronous belt (436), a driven synchronous wheel (437), a second connecting shaft (438) and a connecting plate (439), wherein a supporting baffle (432) is vertically fixed in the middle of the protective shell (431), a reducer (433) is installed at the top of the right end of the supporting baffle (432), a motor (434) is installed at the right end of the reducer (433), and the reducer (43 3) The left end is connected to the center of the active synchronous wheel (435) through a rotating shaft, and the bottom of the active synchronous wheel (435) rotates synchronously with the driven synchronous wheel (437) through a synchronous belt (436). The centers of the left ends of the active synchronous wheel (435) and the driven synchronous wheel (437) are respectively connected to connecting plates (439) through second connecting shafts (438), and the left ends of the two connecting plates (439) are respectively connected to the first support assembly (412) and the second support assembly (413), and the left end of the protective shell (431) is fixedly connected to the outer shell (1).

4. The filter screen for indoor air purification according to claim 3, characterized in that: The support tube (4135) comprises a straight tube (41351), a movable arc plate (41352), a protrusion (41353), a limiting rod (41354), a spring (41355) and a plug (41356). The movable arc plates (41352) are respectively arranged on two opposite sides of the straight tube (41351). The protrusion (41353) is fixed on the outside of the movable arc plate (41352). The protrusion (41353) penetrates the straight tube (41351) and extends out. The movable arc plate (41352) penetrates A limit rod (41354), wherein a spring (41355) is sleeved on the outer wall of the limit rod (41354), and the two movable arc plates (41352) are elastically connected via the spring (41355), both ends of the limit rod (41354) are fixed to the inner wall of the straight tube (41351), a plug (41356) is provided at the center of the right end of the straight tube (41351), the left end of the straight tube (41351) is fixedly connected to the limit plate (4134), and the right end of the plug (41356) is plugged into the connecting plate (439).

5. The filter screen for indoor air purification according to claim 4, characterized in that: The first connecting shaft (4132), the supporting bearing (4133), the first knob (41312), the rotating shaft (41313), the straight tube (41351), the plug (41356), the second connecting shaft (438) and the connecting plate (439) are arranged with their centers in the same straight line.

6. The filter screen for indoor air purification according to claim 5, characterized in that: The polished rod (41316) and the bidirectional screw (41318) are arranged in parallel, and the threads on both sides of the bidirectional screw (41318) are arranged in positive and negative threads. The polished rod (41316) fits against the inner wall of the fixed shell (41311).

7. The filter screen for indoor air purification according to claim 6, characterized in that: The left and right sides of the protrusion (41353) are both inclined.

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