Indoor formaldehyde purification device

Abstract

The utility model is suitable for the technical field of formaldehyde purification, and provides an indoor formaldehyde purification device which comprises a box body, a supporting seat is fixedly mounted on the inner side of the box body; a reel is rotationally installed on the inner side of the supporting base and is of a hollow structure. A conveying pipe is wound on the periphery of the reel, one end of the conveying pipe is fixedly connected and communicated with the reel, and the other end of the conveying pipe extends out of one side of the box body; an air pump is fixedly installed on the inner side of the box body and located on one side of the reel. A fixed pipe is fixedly mounted at the output end of the air pump, and one end of the fixed pipe is rotationally connected and communicated with the reel; fixed teeth are fixedly mounted on the periphery of the reel; and a movable disc is movably mounted on the inner side of the box body. According to the indoor formaldehyde purification device provided by the scheme, the conveying pipe can be contracted to the box body for protection, the conveying pipe can be uniformly wound on the periphery of the reel, the situation that the conveying pipe is scattered and wound is avoided, and dust and impurities adhering to the surface of the conveying pipe can be automatically removed.

Description

Technical Field

[0001] This utility model belongs to the field of formaldehyde purification technology, and in particular relates to an indoor formaldehyde purification device. Background Technology

[0002] Formaldehyde is a widely used organic compound, but it also poses certain hazards to human health and the environment. It is common for large amounts of formaldehyde to be generated indoors after renovation. Because formaldehyde is very harmful to the human body, it is necessary to purify the indoor formaldehyde.

[0003] Chinese patent discloses an indoor formaldehyde purification device, publication number CN217235986U. The paper proposes "a chassis and a control module, wherein a gas collection pipe and a top plate are vertically arranged in the middle of the bottom plate of the chassis, an exhaust pipe is provided at one end of the pump body inside the chassis, and a suction pipe is provided at the other end of the pump body. A filter is detachably connected between the top surface of the bottom plate and the bottom surface of the top plate. The filter includes a housing, the interior of the housing is set as a hollow structure, a filter element is installed inside the housing, and filter holes are evenly opened on the housing."

[0004] However, the above-mentioned solution involves drawing indoor air into the device and having the filter structure inside the device intercept and filter formaldehyde to achieve formaldehyde purification. This makes the formaldehyde purification efficiency relatively slow. Usually, when purifying formaldehyde quickly, it is mostly done by spraying formaldehyde-removing enzymes into the room to quickly purify the formaldehyde. However, existing purification devices are not convenient for arranging and winding up the pipes, making the pipes prone to tangling and mess. At the same time, it is not convenient to automatically remove dust and impurities adhering to the pipes. Utility Model Content

[0005] This utility model provides an indoor formaldehyde purification device, which aims to solve the problem that some currently used integrated seeding and fertilization machines are inconvenient to achieve fixed-distance seeding.

[0006] This utility model is implemented as follows: an indoor formaldehyde purification device includes a housing; a support base is fixedly installed on the inner side of the housing; a reel, which is hollow, is rotatably installed on the inner side of the support base; a conveying pipe is wound around the outer periphery of the reel, one end of which is fixedly connected to and communicates with the reel, and the other end of which extends out of one side of the housing; an air pump is fixedly installed on the inner side of the housing, located on one side of the reel; a fixing pipe is fixedly installed at the output end of the air pump, one end of which is rotatably connected to and communicates with the reel; fixing teeth are fixedly installed around the outer periphery of the reel; a movable disc is movably installed on the inner side of the housing, located above the fixing teeth; a movable frame is fixedly installed at the bottom of the movable disc, located on the reel. The outer side of the movable plate; a movable tooth is fixedly installed on the inner side of the movable frame, and the movable tooth meshes with the fixed tooth; a fixed column is fixedly installed on the top of the movable plate, and one end of the fixed column extends out of the top of the box; a movable block is movably installed on the inner side of the box, and the movable block is located on the other side of the reel; a reciprocating screw is rotatably installed on the inner side of the box, and the reciprocating screw passes through the movable block; a fixed post is fixedly installed on the inner side of the movable block, and the fixed post extends to the inner side of the reciprocating screw; a limit ring is fixedly installed on the bottom of the movable block, and the conveying pipe passes through the inner side of the limit ring; two fixed frames are fixedly installed on one side of the box, and both fixed frames are located on the outer side of the conveying pipe; a sponge block is fixedly installed on the inner side of each of the two fixed frames, and the sponge block corresponds to the conveying pipe.

[0007] Preferably, the bottom of the box is rotatably equipped with multiple casters, and the top of the box is fixedly equipped with a handrail.

[0008] Preferably, two fixing seats are fixedly installed on one side of the box, and the two fixing frames are fixedly connected to the box through the two fixing seats.

[0009] Preferably, a limiting plate is fixedly installed on the outside of the conveying pipe, the limiting plate is located on one side of the fixing frame, and a docking sleeve is fixedly connected to one end of the conveying pipe.

[0010] Preferably, a rotating rod extending from the rear side of the housing is fixedly mounted on the axis of the reel, and the rotating rod is rotatably connected to the reciprocating lead screw via a belt located at the rear side of the housing.

[0011] Preferably, a spring is fixedly installed between the axis of the reel and the support base. The spring is located on the rear side of the support base, and its two ends are fixedly connected to the reel and the support base, respectively.

[0012] Preferably, the axis of the reel extends out from the front side of the support base and is fixedly mounted with a rotating frame. One end of the fixed tube is rotatably connected to the rotating frame, and the fixed tube and the reel are connected through the rotating frame.

[0013] Preferably, two slide rods are fixedly installed on the inner side of the housing. The two slide rods are located on both sides of the reciprocating screw, and both slide rods pass through the movable block and are slidably connected to the movable block.

[0014] Preferably, a fixing hole is provided on one side of the box body, and a limiting frame is fixedly installed on the inner wall of the box body. The limiting frame corresponds to the conveying pipe, and one end of the conveying pipe extends out of one side of the box body through the limiting frame and the fixing hole.

[0015] Preferably, a thrust spring is fixedly installed on the top of the movable plate, one end of the thrust spring is fixedly connected to the inner wall of the box, the thrust spring is located on the periphery of the fixed column, and one end of the fixed column extends out of the top of the box and is fixedly installed with a fixing ring.

[0016] Compared with related technologies, the indoor formaldehyde purification device provided by this utility model has the following beneficial effects:

[0017] 1. First, fix the bottle containing the formaldehyde removal enzyme onto the spray gun. Then, connect one end of the delivery tube to the spray gun using the connecting sleeve. Pulling the delivery tube out of the housing causes the reel to rotate, loosening the delivery tube. As the reel loosens the delivery tube, it tightens the spring. Pushing the movable disc downwards simultaneously moves the movable frame downwards. The engagement between the movable and fixed teeth secures the reel, preventing it from winding up the delivery tube. An air pump delivers airflow into the fixed tube, which then flows into the reel. The airflow is then guided into the delivery tube through the reel and finally into the spray gun, where it is sprayed out. This process carries the formaldehyde removal enzyme from the bottle, facilitating its application. In indoor formaldehyde purification, pulling the fixed column upwards moves the movable disc upwards, simultaneously moving the movable frame and movable teeth upwards. This allows the movable teeth to separate from the fixed teeth, and the force of the spring-loaded reel rotates, winding the conveyor pipe back and forth. The pipe is then retracted into the housing and wrapped around the outside of the reel for protection. The rotating reel also drives a rotating rod, which, via belt drive, rotates a reciprocating screw. This screw moves a movable block back and forth, simultaneously moving a limit ring. As the reel winds up the conveyor pipe, the reciprocating movement of the limit ring ensures the pipe is evenly wound around the reel, preventing it from becoming tangled or scattered.

[0018] 2. The universal wheels and handrail on the box make it easy to move and use. By fixing the bracket to one side of the box and using the sponge block to contact the conveying pipe, the sponge block can clean the surface of the conveying pipe when it retracts into the box, which can automatically remove dust and impurities adhering to the surface of the conveying pipe. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the front sectional view of the present invention;

[0022] Figure 4 This is a schematic diagram of the rear view structure of the reel of this utility model;

[0023] Figure 5 This is a side view sectional diagram of the reel structure of this utility model;

[0024] Figure 6 For the present utility model Figure 5 Enlarged structural diagram of section A;

[0025] Figure 7 This is a side view sectional view of the movable block of this utility model;

[0026] Figure 8 This is a partial cross-sectional view of the box structure of this utility model;

[0027] Figure 9 This is a cross-sectional view of the movable disc of this utility model.

[0028] In the diagram: 1. Box body; 2. Casters; 3. Handrail frame; 4. Fixing ring; 5. Fixing seat; 6. Fixing frame; 7. Sponge block; 8. Conveying pipe; 9. Limiting plate; 10. Connecting sleeve; 11. Reciprocating screw; 12. Rotating rod; 13. Belt; 14. Support base; 15. Reel; 16. Movable plate; 17. Movable block; 18. Air pump; 19. Fixing pipe; 20. Fixing tooth; 21. Spring; 22. Rotating frame; 23. Fixing post; 24. Sliding rod; 25. Limiting ring; 26. Fixing hole; 27. Limiting frame; 28. Fixing column; 29. ​​Thrust spring; 30. Movable frame; 31. Movable tooth. Detailed Implementation

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] Example 1

[0032] A preferred embodiment of the indoor formaldehyde purification device provided by this utility model is, for example... Figures 1 to 9As shown: An indoor formaldehyde purification device includes a housing 1; a support base 14 is fixedly installed on the inner side of the housing 1; a reel 15 is rotatably installed on the inner side of the support base 14, the reel 15 being a hollow structure; a conveying pipe 8 is wound around the outer periphery of the reel 15, one end of the conveying pipe 8 being fixedly connected and communicating with the reel 15, and the other end of the conveying pipe 8 extending out of one side of the housing 1; an air pump 18 is fixedly installed on the inner side of the housing 1, the air pump 18 being located on one side of the reel 15; a fixing pipe 19 is fixedly installed at the output end of the air pump 18, one end of the fixing pipe 19 being rotatably connected and communicating with the reel 15; fixing teeth 20 are fixedly installed on the outer periphery of the reel 15; a movable disc 16 is movably installed on the inner side of the housing 1, the movable disc 16 being located above the fixing teeth 20; a movable frame 30 is fixedly installed at the bottom of the movable disc 16, the movable frame 30 being located outside the reel 15. Movable teeth 31 are fixedly installed on the inner side of the movable frame 30, and the movable teeth 31 mesh with the fixed teeth 20; a fixed post 28 is fixedly installed on the top of the movable plate 16, and one end of the fixed post 28 extends above the box body 1; a movable block 17 is movably installed on the inner side of the box body 1, and the movable block 17 is located on the other side of the reel 15; a reciprocating screw 11 is rotatably installed on the inner side of the box body 1, and the reciprocating screw 11 passes through the movable block 17; a fixed post 23 is fixedly installed on the inner side of the movable block 17, and the fixed post 23 extends to the inner side of the reciprocating screw 11; a limit ring 25 is fixedly installed on the bottom of the movable block 17, and the conveying pipe 8 passes through the inner side of the limit ring 25; two fixed frames 6 are fixedly installed on one side of the box body 1, and both fixed frames 6 are located on the outer side of the conveying pipe 8; a sponge block 7 is fixedly installed on the inner side of both fixed frames 6, and the sponge block 7 corresponds to the conveying pipe 8.

[0033] It should be noted that some existing indoor formaldehyde purification devices still have certain shortcomings in actual use. After use, it is not convenient to roll up and store the delivery pipe 8, which makes the delivery pipe 8 easy to become scattered and tangled, making it troublesome to use and store.

[0034] In this embodiment, the bottle containing the formaldehyde removal enzyme is first fixed to the spray gun, and then one end of the delivery pipe 8 is fixedly connected to the spray gun. By pulling the delivery pipe 8 to extend out of the housing 1, the reel 15 can be rotated, allowing the delivery pipe 8 to be loosened. When the delivery pipe 8 is loosened, the reel 15 can tighten the spring 21. By pushing the movable disc 16 downward, the movable frame 30 is simultaneously moved downward. The engagement between the movable teeth 31 and the fixed teeth 20 can fix the reel 15, preventing it from rotating. The delivery pipe 8 is wound up, and the air pump 18 delivers airflow into the fixed pipe 19. The airflow is then delivered through the fixed pipe 19 to the reel 15, allowing it to pass through the reel 15 and into the delivery pipe 8. The airflow is then delivered through the delivery pipe 8 to the spray gun and sprayed out, carrying out the formaldehyde-removing enzyme from the bottle for easy application indoors to purify formaldehyde. Pulling the fixed column 28 upwards moves the movable plate 16 upwards, simultaneously moving the movable frame 30 and movable teeth 31 upwards, allowing the movable teeth 31 and fixed teeth 2... 0. Separation: The force of the spring 21 drives the reel 15 to rotate, causing the reel 15 to wind up the conveyor pipe 8. This allows the conveyor pipe 8 to retract into the housing 1 and wrap around the outside of the reel 15 for protection. The rotation of the reel 15 drives the rotating rod 12 to rotate, which, via the belt 13, drives the reciprocating screw 11 to rotate. The fixed post 23 slides along the inner side of the reciprocating screw 11, causing the rotating screw 11 to drive the movable block 17 to move back and forth synchronously. The movement of the limiting ring 25 allows the reel 15 to evenly wind the conveying pipe 8 around the outside of the reel 15 during winding, preventing the conveying pipe 8 from becoming tangled. The use is convenient by pushing the housing 1 to move. By fixing the fixing bracket 6 to one side of the housing 1 and using the sponge block 7 to contact the conveying pipe 8, the surface of the conveying pipe 8 can be cleaned by the sponge block 7 when the conveying pipe 8 is retracted into the housing 1, which can automatically remove dust and impurities adhering to the surface of the conveying pipe 8.

[0035] In a further preferred embodiment of the present invention, a plurality of casters 2 are rotatably mounted on the bottom of the box body 1, and a handrail 3 is fixedly mounted on the top of the box body 1.

[0036] In this embodiment, the universal wheels 2 are used for rolling support on the ground, and the box 1 can be easily moved by the handrail frame 3.

[0037] In a further preferred embodiment of this utility model, two fixing seats 5 are fixedly installed on one side of the box body 1, and the two fixing brackets 6 are fixedly connected to the box body 1 through the two fixing seats 5.

[0038] In this embodiment, the mounting bracket 6 can be easily installed and disassembled using the mounting base 5.

[0039] In a further preferred embodiment of the present invention, a limiting plate 9 is fixedly installed on the outer side of the conveying pipe 8, the limiting plate 9 is located on one side of the fixing frame 6, and a docking sleeve 10 is fixedly connected to one end of the conveying pipe 8.

[0040] In this embodiment, the limiting plate 9 can limit one end of the delivery pipe 8 to prevent one end of the delivery pipe 8 from shrinking into the box 1. The docking sleeve 10 can facilitate the connection and fixation between the spray gun and the delivery pipe 8.

[0041] Example 2

[0042] Based on Example 1, a preferred embodiment of the indoor formaldehyde purification device provided by this utility model is as follows: Figures 1 to 9 As shown: A rotating rod 12 extending from the rear side of the housing 1 is fixedly installed on the shaft of the reel 15. The rotating rod 12 is rotatably connected to the reciprocating screw 11 via a belt 13, which is located at the rear side of the housing 1.

[0043] In this embodiment, the rotating rod 12 can drive the belt 13 synchronously when the reel 15 rotates, and the belt 13 can drive the reciprocating screw 11 to rotate.

[0044] In a further preferred embodiment of the present invention, a spring 21 is fixedly installed between the axis of the reel 15 and the support base 14. The spring 21 is located on the rear side of the support base 14, and the two ends of the spring 21 are fixedly connected to the reel 15 and the support base 14 respectively.

[0045] In this embodiment, the force of the spring 21 can drive the reel 15 to rotate and wind up the delivery tube 8.

[0046] In a further preferred embodiment of the present invention, the axis of the reel 15 extends out from the front side of the support base 14 and a rotating frame 22 is fixedly installed thereon. One end of the fixed tube 19 is rotatably connected to the rotating frame 22, and the fixed tube 19 and the reel 15 are connected through the rotating frame 22.

[0047] In this embodiment, the rotating frame 22 can connect and communicate between the fixed tube 19 and the reel 15, and at the same time, it can facilitate the rotation of the connection between the reel 15 and the fixed tube 19.

[0048] In a further preferred embodiment of the present invention, two slide rods 24 are fixedly installed on the inner side of the housing 1. The two slide rods 24 are located on both sides of the reciprocating lead screw 11, and both slide rods 24 pass through the movable block 17 and are slidably connected to the movable block 17.

[0049] In this embodiment, the sliding rod 24 can limit the movable block 17 to prevent it from rotating, while also facilitating the stable back-and-forth sliding of the movable block 17.

[0050] In a further preferred embodiment of the present invention, a fixing hole 26 is provided on one side of the box body 1, and a limiting frame 27 is fixedly installed on the inner wall of the box body 1. The limiting frame 27 corresponds to the conveying pipe 8, and one end of the conveying pipe 8 extends out of one side of the box body 1 through the limiting frame 27 and the fixing hole 26.

[0051] In this embodiment, the conveying pipe 8 can be easily extended out of the box 1 through the fixing hole 26, and the limiting bracket 27 can guide and limit the conveying pipe 8 to avoid the fixing hole 26 causing scratches and wear to the conveying pipe 8.

[0052] In a further preferred embodiment of the present invention, a thrust spring 29 is fixedly installed on the top of the movable plate 16. One end of the thrust spring 29 is fixedly connected to the inner wall of the box 1. The thrust spring 29 is located on the periphery of the fixed column 28. One end of the fixed column 28 extends out of the top of the box 1 and is fixedly installed with a fixing ring 4.

[0053] In this embodiment, the movable disk 16 can be pushed downward by the thrust of the thrust spring 29, and the fixed column 28 can be easily pulled upward by the fixed ring 4.

[0054] In summary, the sponge block 7 can be installed and fixed using the fixing frame 6, and the sponge block 7 can automatically clean the dust and impurities adhering to the surface of the conveying pipe 8 during winding. The top and bottom of the box 1 are respectively equipped with a handrail 3 and casters 2, which can be easily pushed to move the box 1, making it more convenient to use.

[0055] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0056] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An indoor formaldehyde purification device, characterized in that, include: Box (1); A support base (14) is fixedly installed on the inner side of the box (1); A reel (15) is rotatably mounted on the inner side of the support base (14), and the reel (15) is a hollow structure; The reel (15) is surrounded by a conveying pipe (8), one end of which is fixedly connected to and communicates with the reel (15), and the other end of which extends out of one side of the box (1). An air pump (18) is fixedly installed on the inside of the housing (1), and the air pump (18) is located on one side of the reel (15); The output end of the air pump (18) is fixedly installed with a fixed pipe (19), one end of which is rotatably connected to and communicates with the reel (15); The outer periphery of the reel (15) is fixedly equipped with fixing teeth (20); A movable disc (16) is movably installed on the inner side of the housing (1), and the movable disc (16) is located above the fixed teeth (20); A movable frame (30) is fixedly installed at the bottom of the movable reel (16), and the movable frame (30) is located on the outside of the reel (15); The movable frame (30) is fixedly installed with a movable tooth (31) on its inner side, and the movable tooth (31) meshes with the fixed tooth (20); A fixing post (28) is fixedly installed on the top of the movable plate (16), and one end of the fixing post (28) extends out of the box body (1); A movable block (17) is movably installed on the inner side of the housing (1), and the movable block (17) is located on the other side of the reel (15); A reciprocating screw (11) is rotatably installed on the inner side of the housing (1). The reciprocating screw (11) passes through the movable block (17). A fixing post (23) is fixedly installed on the inner side of the movable block (17). The fixing post (23) extends to the inner side of the reciprocating screw (11). A limiting ring (25) is fixedly installed at the bottom of the movable block (17), and the conveying pipe (8) passes through the inside of the limiting ring (25); Two fixing brackets (6) are fixedly installed on one side of the box (1), and both fixing brackets (6) are located on the outside of the conveying pipe (8); Sponge blocks (7) are fixedly installed on the inner side of both of the fixing frames (6), and the sponge blocks (7) correspond to the conveying pipes (8).

2. The indoor formaldehyde purification device as described in claim 1, characterized in that, The bottom of the box (1) is rotatably equipped with multiple casters (2), and the top of the box (1) is fixedly equipped with a handrail (3).

3. The indoor formaldehyde purification device as described in claim 1, characterized in that, Two fixing seats (5) are fixedly installed on one side of the box (1), and the two fixing frames (6) are fixedly connected to the box (1) through the two fixing seats (5).

4. The indoor formaldehyde purification device as described in claim 1, characterized in that, A limiting plate (9) is fixedly installed on the outside of the conveying pipe (8). The limiting plate (9) is located on one side of the fixing frame (6). A docking sleeve (10) is fixedly connected to one end of the conveying pipe (8).

5. The indoor formaldehyde purification device as described in claim 1, characterized in that, The reel (15) has a rotating rod (12) that extends out of the rear side of the housing (1) fixedly mounted on its axis. The rotating rod (12) is rotatably connected to the reciprocating screw (11) via a belt (13) located at the rear side of the housing (1).

6. The indoor formaldehyde purification device as described in claim 1, characterized in that, A spring (21) is fixedly installed between the axis of the reel (15) and the support base (14). The spring (21) is located on the rear side of the support base (14), and the two ends of the spring (21) are fixedly connected to the reel (15) and the support base (14) respectively.

7. The indoor formaldehyde purification device as described in claim 1, characterized in that, The axis of the reel (15) extends out from the front side of the support base (14) and a rotating frame (22) is fixedly installed thereon. One end of the fixed tube (19) is rotatably connected to the rotating frame (22), and the fixed tube (19) and the reel (15) are connected through the rotating frame (22).

8. The indoor formaldehyde purification device as described in claim 1, characterized in that, Two slide rods (24) are fixedly installed on the inner side of the housing (1). The two slide rods (24) are located on both sides of the reciprocating screw (11). Both slide rods (24) pass through the movable block (17) and are slidably connected to the movable block (17).

9. The indoor formaldehyde purification device as described in claim 1, characterized in that, A fixing hole (26) is provided on one side of the box (1), and a limiting frame (27) is fixedly installed on the inner wall of the box (1). The limiting frame (27) corresponds to the conveying pipe (8), and one end of the conveying pipe (8) extends out of one side of the box (1) through the limiting frame (27) and the fixing hole (26).

10. The indoor formaldehyde purification device as described in claim 1, characterized in that, A thrust spring (29) is fixedly installed on the top of the movable plate (16). One end of the thrust spring (29) is fixedly connected to the inner wall of the box (1). The thrust spring (29) is located on the periphery of the fixed column (28). One end of the fixed column (28) extends out of the top of the box (1) and is fixedly installed with a fixing ring (4).

Images