A snap-fit fixed air purification filter screen and a fixing method

Abstract

The present invention relates to the technical field of filter screen fixing, and specifically, to a snap - on fixed air purification filter screen and a fixing method thereof. It includes a bottom frame, a filter element disposed at the air inlet end of the bottom frame, and a control component disposed at the air outlet end of the bottom frame; snap - on components are disposed on both sides of the bottom frame in a telescopic manner; a sliding channel is further formed in the bottom frame, and both ends of the sliding channel penetrate through the air inlet end and the air outlet end of the bottom frame respectively; a wedge - shaped slider is slidably disposed in the sliding channel; under normal conditions, the control component seals the air outlet end of the bottom frame. In this snap - on fixed air purification filter screen and fixing method, one end of the bottom frame is sealed before installation, so as to suck the bottom frame to the position where it needs to be installed by using the suction force inside the air duct, and then the bottom frame is clamped inside the air duct through the snap - on components, thereby realizing the rapid installation of the bottom frame inside the air duct and improving the installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of filter screen fixing, and more specifically, to a snap-fitting air purification filter screen and a fixing method thereof. Background Art

[0002] With the rapid development of industrial production, the urban environment is increasingly polluted from all aspects. Residents living in the city are thus harmed by air pollution. Due to the decline in outdoor air quality, it also affects the air quality level in the city. Developing a filtering system that can efficiently and quickly filter dust in the air and reduce and kill pathogenic microorganisms in the air will play a positive role in human health.

[0003] Air filter screens are divided into four types: coarse efficiency, medium efficiency, sub-high efficiency, and high efficiency. Different numbers of air filters are installed in a duct according to the size of the air volume. The filtering section is installed in a central air-conditioning system to filter out dust particles in the air sent into the room, so as to achieve high-quality indoor air.

[0004] In order to achieve multiple filtration of air, multiple filter screens with different specifications are set in the duct. Among the multiple filter screens with different specifications, the coarse filter screen is usually set at the end of the duct, and the fine filter screen is set inside the duct.

[0005] After being used for a period of time, the filter screen needs to be removed for cleaning or replacement. However, since the fine filter screen is inside the duct and far from the end of the duct, it is difficult for people to fix or disassemble the fine filter screen inside the duct. Summary of the Invention

[0006] The purpose of the present invention is to provide a snap-fitting air purification filter screen and a fixing method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, one of the purposes of the present invention is to provide a snap-fitting air purification filter screen, including a bottom frame, a filter element arranged at the air inlet end of the bottom frame, and a control component arranged at the air outlet end of the bottom frame; snap-fitting components are arranged on both sides of the bottom frame in a telescopic manner;

[0008] A sliding channel is further opened in the bottom frame, and both ends of the sliding channel penetrate through the air inlet end and the air outlet end of the bottom frame respectively; a wedge-shaped slider is slidably arranged in the sliding channel;

[0009] Under normal conditions, the control component seals the air outlet end of the bottom frame, so that when the air duct is exhausting air, the air pressure at the air outlet end of the control component is forced to be lower than the air pressure at the air inlet end of the bottom frame, thereby attracting the bottom frame and the wedge-shaped slider into the air duct;

[0010] When the bottom frame is sucked to the required installation position, the wedge-shaped slider drives the control component and the clamping component to operate, so that the clamping component extends to clamp the bottom frame in the air duct, and the control component opens the exhaust end of the control component in a rotating manner;

[0011] One end of the sliding channel is fixedly provided with a magnet block, and the magnet block attracts the wedge-shaped slider to adsorb the wedge-shaped slider when the wedge-shaped slider moves to the magnet block.

[0012] As a further improvement of the technical solution, the control component includes a plurality of baffles arranged longitudinally, convex shafts are fixedly provided at opposite ends of the baffle, a groove is provided at the exhaust end of the control component, and the convex shaft at the end of the baffle penetrates into the groove from the inner wall of the bottom frame.

[0013] As a further improvement of the technical solution, a gear is coaxially and fixedly connected to the end of the convex shaft, a rack is longitudinally slidably arranged inside the groove, and the rack meshes with a plurality of gears at the same time; the bottom end of the rack penetrates into the sliding channel in a sliding manner.

[0014] As a further improvement of the technical solution, the clamping component includes a sliding cavity opened inside the bottom frame, the bottom end of the sliding cavity communicates with the top of the sliding channel, and one side of the top end of the sliding cavity penetrates through the side wall of the bottom frame; a clamping block is horizontally slidably arranged at the top end of the sliding cavity, and a wedge-shaped driving rod is longitudinally slidably arranged inside the sliding cavity, and the wedge-shaped driving rod is used to drive the clamping block to move outward of the bottom frame during the movement of the wedge-shaped slider.

[0015] As a further improvement of the technical solution, a return spring for elastically connecting the two is arranged between the clamping block and the sliding cavity, so that when disassembly is required, the clamping block is elastically pulled by the return spring to reset into the sliding cavity.

[0016] As a further improvement of the technical solution, inclined surfaces are provided at the top and bottom of the wedge-shaped driving rod, the inclined surface at the top of the wedge-shaped driving rod faces the gear, and the inclined surface at the bottom faces the wedge-shaped slider.

[0017] As a further improvement of the technical solution, the wedge-shaped driving rod includes a first top rod located above and a second top rod located below, a connecting spring for elastically connecting the two is arranged between the first top rod and the second top rod, the inclined surface at the top of the first top rod faces the clamping block, and the inclined surface at the bottom of the second top rod faces the wedge-shaped slider.

[0018] As a further improvement of the technical solution, a rotating shaft is rotatably arranged outside the bottom frame, sealing blocks are arranged at the four corners of the bottom frame, the sealing blocks are made of flexible materials, and the thickness of the sealing blocks is the same as the height of the rotating shaft protruding from the side wall of the bottom frame.

[0019] The second object of the present invention is to provide a fixing method for a snap - fixed air purification filter screen, including the following method steps:

[0020] S1. When the air duct is exhausting air internally, the bottom frame located inside the air duct blocks the inside of the air duct, increasing the suction force inside the air duct, thereby sucking the bottom frame originally at the end position inward.

[0021] S2. The suction force inside the air duct sucks the wedge - shaped slider, causing the wedge - shaped slider to move towards the rack. During the movement of the wedge - shaped slider, the wedge - shaped slider first pushes the wedge - shaped driving rod upward through its own inclined surface. The upward movement of the wedge - shaped driving rod pushes the clamping block outward. At this time, the outward - moving clamping block is stuck in the clamping groove on the inner wall of the air duct.

[0022] S3. The continuously moving wedge - shaped slider pushes the rack upward through its own inclined surface. The upward movement of the rack drives the gear to rotate. The rotation of the gear drives the baffle to rotate 90 degrees through the convex shaft, so that the baffle is in a horizontal state. When the baffle is in a horizontal state, the exhaust end of the bottom frame is opened.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In the snap - fixed air purification filter screen and the fixing method, one end of the bottom frame is blocked before installation, so as to use the suction force inside the air duct to suck the bottom frame to the position where it needs to be installed, and then the bottom frame is clamped inside the air duct through the clamping component, thereby realizing the rapid installation of the bottom frame inside the air duct and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0026] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0027] Figure 3 is a schematic diagram of the structure of the control component of the present invention;

[0028] Figure 4 is a schematic cross - sectional structure diagram of the bottom frame of the present invention;

[0029] Figure 5 is a schematic diagram of the structure of the clamping component of the present invention Figure 1 ;

[0030] Figure 6 is a schematic diagram of the structure of the clamping component of the present invention Figure 2 。

[0031] The meanings of each reference numeral in the figure are as follows:

[0032] 100. Bottom frame; 101. Filter element;

[0033] 110. Control component; 111. Baffle; 112. Gear; 113. Groove; 114. Rack;

[0034] 120. Clamping component; 121. Sliding cavity; 122. Clamping block; 123. First ejector rod; 124. Connecting spring; 125. Second ejector rod; 126. Reset spring;

[0035] 130. Sliding channel; 131. Wedge-shaped slider; 132. Magnet block; 140. Rotating shaft; 141. Sealing block;

[0036] 200. Air duct; 201. Stop block. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0040] Please refer to Figures 1-4As shown in the figure, one of the objectives of the present invention is to provide a snap-fixed air purification filter screen, which includes a bottom frame 100, a filter element 101 disposed at the air inlet end of the bottom frame 100, and a control component 110 disposed at the air outlet end of the bottom frame 100; snap components 120 are disposed on both sides of the bottom frame 100 in a telescopic manner; a sliding channel 130 is further opened in the bottom frame 100, and both ends of the sliding channel 130 penetrate through the air inlet end and the air outlet end of the bottom frame 100 respectively; a wedge-shaped slider 131 is slidably disposed in the sliding channel 130; under normal conditions, the control component 110 blocks the air outlet end of the bottom frame 100, so that when the air duct 200 is exhausting air, the air pressure at the air outlet end of the control component 110 is forced to be lower than the air pressure at the air inlet end of the bottom frame 100, thereby sucking the bottom frame 100 and the wedge-shaped slider 131 into the interior of the air duct 200; when the bottom frame 100 is sucked to the required installation position, the wedge-shaped slider 131 drives the control component 110 and the snap components 120 to operate, so that the snap components 120 extend to clamp the bottom frame 100 in the air duct 200, and the control component 110 opens the air outlet end of the control component 110 in a rotational manner.

[0041] That is to say, before installation, one end of the bottom frame 100 is blocked, so that the bottom frame 100 is sucked to the position where it needs to be installed by the suction force inside the air duct 200, and then the bottom frame 100 is clamped inside the air duct 200 through the snap components 120, thereby realizing the rapid installation of the bottom frame 100 inside the air duct 200 and improving the installation efficiency.

[0042] As Figure 3 shown in the figure, the control component 110 includes a plurality of baffles 111 arranged longitudinally, convex shafts are fixedly arranged at both opposite ends of the baffle 111, a groove 113 is opened at the air outlet end of the control component 110, and the convex shafts at the ends of the baffle 111 penetrate into the groove 113 from the inner wall of the bottom frame 100.

[0043] As Figure 4 shown in the figure, a gear 112 is coaxially and fixedly connected to the end of the convex shaft, a rack 114 is longitudinally slidably arranged inside the groove 113, and the rack 114 meshes with a plurality of gears 112 at the same time; the bottom end of the rack 114 penetrates into the sliding channel 130 in a sliding manner.

[0044] As Figures 4-6 shown in the figure, the snap component 120 includes a sliding cavity 121 opened inside the bottom frame 100, the bottom end of the sliding cavity 121 communicates with the top of the sliding channel 130, and one side of the top end of the sliding cavity 121 penetrates through the side wall of the bottom frame 100; a snap block 122 is horizontally slidably arranged at the top end of the sliding cavity 121, and a wedge-shaped driving rod is longitudinally slidably arranged inside the sliding cavity 121, and the wedge-shaped driving rod is used to drive the snap block 122 to move outward from the bottom frame 100 during the movement of the wedge-shaped slider 131.

[0045] A reset spring 126 elastically connecting the clamping block 122 and the sliding cavity 121 is arranged therebetween, so that when disassembly is required, the clamping block 122 can be elastically pulled by the reset spring 126 to be reset into the sliding cavity 121.

[0046] Specifically, inclined surfaces are provided at both the top and the bottom of the wedge-shaped driving rod. The inclined surface at the top of the wedge-shaped driving rod faces the gear 112, and the inclined surface at the bottom faces the wedge-shaped slider 131.

[0047] In Figure 4 a magnet block 132 is fixedly arranged at one end of the sliding channel 130. The magnet block 132 attracts the wedge-shaped slider 131, and is used to adsorb the wedge-shaped slider 131 when the wedge-shaped slider 131 moves to the magnet block 132, so as to prevent the wedge-shaped slider 131 from resetting.

[0048] Working principle:

[0049] First, the baffle 111 is in a vertical state, so that the baffle 111 seals the air exhaust end of the bottom frame 100. Then, the bottom frame 100 is placed at the end of the air duct 200. When the air duct 200 starts to exhaust air, the suction force inside the air duct 200 increases, so that the bottom frame 100 originally at the end position is sucked inward. Combined with Figure 4 as shown, a stop block 201 is arranged inside the air duct 200 for limiting the bottom frame 100. When the bottom frame 100 moves to the stop block 201, the stop block 201 blocks the bottom frame 100. At this time, the bottom frame 100 cannot move further, and the suction force inside the air duct 200 does not disappear. Therefore, the suction force will suck the wedge-shaped slider 131, so that the wedge-shaped slider 131 moves towards the rack 114. During the movement of the wedge-shaped slider 131, the wedge-shaped slider 131 first pushes the wedge-shaped driving rod upward through its own inclined surface. The upward movement of the wedge-shaped driving rod pushes the clamping block 122 outward. At this time, the outward-moving clamping block 122 is stuck in the clamping groove on the inner wall of the air duct 200, realizing the fixation of the bottom frame 100. Then, the wedge-shaped slider 131 continues to move. At this time, the top of the wedge-shaped slider 131 blocks the wedge-shaped driving rod to prevent the wedge-shaped driving rod from moving downward. Subsequently, the continuously moving wedge-shaped slider 131 pushes the rack 114 upward through its own inclined surface. The upward movement of the rack 114 drives the gear 112 to rotate. The rotation of the gear 112 drives the baffle 111 to rotate 90 degrees through the convex shaft, so that the baffle 111 is in a horizontal state. When the baffle 111 is in a horizontal state, the air exhaust end of the bottom frame 100 is opened, and at this time, the filter element 101 can filter the air.

[0050] When it is necessary to remove the bottom frame 100 from the air duct 200, a magnet can be used to attract the wedge-shaped slider 131, and then the wedge-shaped slider 131 is pulled to reset it. After the wedge-shaped slider 131 is reset, it disengages from the wedge-shaped drive rod. Subsequently, the clamping block 122 is elastically reset into the sliding cavity 121 by the return spring 126. At this time, the bottom frame 100 can be removed from the air duct 200.

[0051] Moreover, in order to further improve the installation efficiency of the bottom frame 100, the wedge-shaped drive rod includes a first ejector rod 123 located above and a second ejector rod 125 located below. A connecting spring 124 that elastically connects the two is arranged between the first ejector rod 123 and the second ejector rod 125. The inclined surface at the top of the first ejector rod 123 faces the clamping block 122, and the inclined surface at the bottom of the second ejector rod 125 faces the wedge-shaped slider 131.

[0052] In this way, while the bottom frame 100 is attracted, the wedge-shaped slider 131 also moves towards the rack 114. At this time, when the wedge-shaped slider 131 moves, it first pushes the second ejector rod 125 upward. Since the clamping block 122 has not moved to the card slot in the air duct 200 at this time, the clamping block 122 cannot move. At this time, the connecting spring 124 starts to compress. When the clamping block 122 moves to the card slot in the air duct 200, the connecting spring 124 pushes the first ejector rod 123 upward through its own elasticity, and the first ejector rod 123 pushes the clamping block 122 towards the outside of the bottom frame 100, so that the clamping block 122 is snapped into the card slot. The advantage of this is that it avoids setting a stop block 201 inside the air duct 200.

[0053] Moreover, in order to improve the sliding efficiency of the bottom frame 100 and reduce the friction between the bottom frame 100 and the air duct 200, a rotating shaft 140 is rotatably arranged on the outside of the bottom frame 100, and sealing blocks 141 are arranged at the four corners of the bottom frame 100. The sealing blocks 141 are made of flexible materials, and the thickness of the sealing blocks 141 is the same as the height of the rotating shaft 140 protruding from the side wall of the bottom frame 100. In this way, the friction between the bottom frame 100 and the air duct 200 is reduced through the rotating shaft 140, so that the bottom frame 100 can quickly move inside the air duct 200 by using the rotating shaft 140. At the same time, the arranged sealing blocks 141 also block the gaps between the multiple rotating shafts 140 to prevent unfiltered gas from flowing into the air duct 200 through these gaps.

[0054] The second object of the present invention is to provide a fixing method for a snap-fit air purification filter screen, including the following method steps:

[0055] S1. When the air duct 200 is exhausting air, the bottom frame 100 located inside the air duct 200 blocks the inside of the air duct 200, increasing the suction force inside the air duct 200, thereby sucking the bottom frame 100 originally at the end position inward;

[0056] The suction force inside the air duct 200 sucks the wedge-shaped slider 131, causing the wedge-shaped slider 131 to move towards the rack 114. During the movement of the wedge-shaped slider 131, the wedge-shaped slider 131 first pushes the wedge-shaped driving rod upward through its own inclined surface. The upward movement of the wedge-shaped driving rod pushes the clamping block 122 outward. At this time, the outward-moving clamping block 122 is stuck in the card slot on the inner wall of the air duct 200.

[0057] S3. The continuously moving wedge-shaped slider 131 pushes the rack 114 upward through its own inclined surface. The upward movement of the rack 114 drives the gear 112 to rotate. The rotation of the gear 112 drives the baffle 111 to rotate 90 degrees through the convex shaft, so that the baffle 111 is in a horizontal state. When the baffle 111 is in a horizontal state, the exhaust end of the bottom frame 100 is opened.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A snap - fixed air purification filter net, comprising a bottom frame (100), a filter element (101) arranged at the air inlet end of the bottom frame (100), and a control component (110) arranged at the air outlet end of the bottom frame (100); snap - connection components (120) are arranged on both sides of the bottom frame (100) in a telescopic manner; characterized in that: A sliding channel (130) is further opened in the bottom frame (100), and both ends of the sliding channel (130) penetrate through the air inlet end and the air outlet end of the bottom frame (100) respectively; a wedge - shaped slider (131) is slidably arranged in the sliding channel (130); Under normal conditions, the control component (110) seals the air outlet end of the bottom frame (100), so that when the air duct (200) is exhausting air, the air pressure at the air outlet end of the control component (110) is forced to be lower than the air pressure at the air inlet end of the bottom frame (100), thereby sucking the bottom frame (100) and the wedge - shaped slider (131) into the interior of the air duct (200); When the bottom frame (100) is sucked to the required installation position, the wedge - shaped slider (131) drives the control component (110) and the snap - connection component (120) to operate, so that the snap - connection component (120) extends out to clamp the bottom frame (100) in the air duct (200), and the control component (110) opens the air outlet end of the control component (110) in a rotating manner; A magnet block (132) is fixedly arranged at one end of the sliding channel (130), and the magnet block (132) attracts the wedge - shaped slider (131), and is used for adsorbing the wedge - shaped slider (131) when the wedge - shaped slider (131) moves to the position of the magnet block (132); The snap - connection component (120) includes a sliding cavity (121) opened inside the bottom frame (100), the bottom end of the sliding cavity (121) communicates with the top of the sliding channel (130), and one side of the top end of the sliding cavity (121) penetrates through the side wall of the bottom frame (100); a snap - connection block (122) is horizontally slidably arranged at the top end of the sliding cavity (121), and a wedge - shaped driving rod is longitudinally slidably arranged inside the sliding cavity (121), and the wedge - shaped driving rod is used for driving the snap - connection block (122) to move towards the outside of the bottom frame (100) during the movement of the wedge - shaped slider (131); A rotating shaft (140) is rotatably arranged on the outside of the bottom frame (100), sealing blocks (141) are arranged at the four corners of the bottom frame (100), the sealing blocks (141) are made of flexible materials, and the thickness of the sealing blocks (141) is the same as the height of the rotating shaft (140) protruding from the side wall of the bottom frame (100).

2. The snap - fixed air purification filter screen according to claim 1, wherein: The control component (110) includes a plurality of baffles (111) arranged longitudinally, convex shafts are fixedly arranged at both opposite ends of the baffles (111), a groove (113) is opened at the air outlet end of the control component (110), and the convex shafts at the ends of the baffles (111) penetrate into the groove (113) from the inner wall of the bottom frame (100).

3. The snap-on fixed air purification filter screen according to claim 2, characterized in that: A gear (112) is coaxially and fixedly connected to the end of the convex shaft. A rack (114) is longitudinally slidably arranged inside the groove (113), and the rack (114) meshes with a plurality of gears (112) simultaneously; the bottom end of the rack (114) penetrates into the sliding channel (130) in a sliding manner.

4. The snap - fixed air purification filter screen according to claim 1, characterized in that: A return spring (126) elastically connecting the clamping block (122) and the sliding cavity (121) is arranged therebetween, so that when disassembly is required, the clamping block (122) is elastically pulled by the return spring (126) to reset into the sliding cavity (121).

5. The snap-fit fixed air purification filter screen according to claim 1, wherein: Bevels are provided at both the top and bottom of the wedge-shaped driving rod. The bevel at the top of the wedge-shaped driving rod faces the gear (112), and the bevel at the bottom faces the wedge-shaped slider (131).

6. The snap - fixed air purification filter screen according to claim 1, wherein: The wedge-shaped driving rod includes a first ejector rod (123) located above and a second ejector rod (125) located below. A connecting spring (124) elastically connecting the two is arranged between the first ejector rod (123) and the second ejector rod (125). The bevel at the top of the first ejector rod (123) faces the clamping block (122), and the bevel at the bottom of the second ejector rod (125) faces the wedge-shaped slider (131).

7. A fixing method for a snap - on fixed air purification filter screen as described in any one of claims 4 - 6, characterized in that: It includes the following method steps: S1. When air is exhausted inside the air duct (200), the bottom frame (100) located inside the air duct (200) blocks the inside of the air duct (200), increasing the suction force inside the air duct (200), thereby sucking the bottom frame (100) originally at the end position inward. S2. The suction force inside the air duct (200) sucks the wedge-shaped slider (131), so that the wedge-shaped slider (131) moves towards the rack (114); during the movement of the wedge-shaped slider (i31), the wedge-shaped slider (131) first jacks up the wedge-shaped driving rod through its own bevel, and the upward movement of the wedge-shaped driving rod jacks the clamping block (122) outward. At this time, the outward-moving clamping block (122) is stuck in the card slot on the inner wall of the air duct (200). S3. The continuously moving wedge-shaped slider (131) jacks up the rack (114) through its own bevel. The upward movement of the rack (114) drives the gear (112) to rotate. The rotation of the gear (112) drives the baffle (111) to rotate 90 degrees through the convex shaft, so that the baffle (111) is in a horizontal state; when the baffle (111) is in a horizontal state, the exhaust end of the bottom frame (100) is opened.

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