Filter for fresh air treatment

Abstract

The utility model provides a filter for fresh air treatment, belongs to the technical field of filters, and aims to solve the problems that a primary filter screen in the filter is blocked by a large amount of dust and impurities and needs to be frequently replaced to ensure normal operation of the filter and the labor intensity is high after the conventional filter for fresh air treatment is used for a long time. Comprising two connecting covers, and the two connecting covers are fixedly mounted on the outer side of a box body; the medium-efficiency filter screen is inserted into the inner side of the box body; an activated carbon filter screen is inserted into the inner side of the box body; the number of the fixing supports is two, and the two fixing supports are fixedly connected to the outer side of the box body. The number of the rotating shafts is two, and the two rotating shafts are rotationally connected to the inner sides of the two sets of fixing supports correspondingly. Through the arrangement of the primary filter screen replacing device, the primary filter screen in the box body is automatically replaced, the frequency of manually replacing the primary filter screen is reduced, the working efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and more specifically, particularly relates to a filter for fresh air processing. Background Art

[0002] The filter for fresh air treatment is a device used for air purification, mainly used to remove particulate matter, harmful gases and odors in the air, thereby improving the air quality. The filter usually contains a primary filter, a medium filter and an activated carbon filter. The primary filter is mainly used to filter large particles in the air, the medium filter is used to filter fine particles in the air, and the activated carbon filter can remove odors and harmful gases in the air.

[0003] According to the application number: CN202021648614.8, a filter for a fresh air duct is disclosed, including a connection frame and a filter arranged in the connection frame. In the utility model, a connection ring plate is arranged outside the connection frame for connection to the fresh air duct, and silicone sealing rings are arranged at both ends of the connection frame to ensure the sealing of the connection between the connection frame and the fresh air duct. By arranging a filter that can slide in the connection frame, the installation and disassembly of the filter is convenient. At the same time, the sealing silicone sleeve arranged outside the filter ensures air tightness while preventing the filter from sliding out of the connection frame. The filter has a simple structure, is easy to install, and is suitable for popularization and use.

[0004] Based on the above, after long-term use, the primary filter inside the existing fresh air treatment filter will be blocked by a large amount of dust and impurities, affecting the air intake. It is usually necessary to manually replace the primary filter. Since the primary filter is in direct contact with the unfiltered air, the service life of the primary filter is relatively short. Frequent replacement is required to ensure the normal operation of the filter, which is labor-intensive. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the utility model provides a filter for fresh air treatment to solve the problem that after long-term use, the primary filter in the existing fresh air treatment filter will be blocked by a large amount of dust and impurities, affecting the air intake, and usually requires manual replacement of the primary filter. Since the primary filter is in direct contact with unfiltered air, the service life of the primary filter is relatively short, and frequent replacement is required to ensure the normal operation of the filter, which is labor-intensive.

[0006] The purpose and effect of the filter for fresh air treatment of the utility model are achieved by the following specific technical means:

[0007] A filter for fresh air treatment, comprising a casing, a connecting cover, a medium-efficiency filter, an activated carbon filter, a fixed bracket, a rotating shaft, a primary filter, a filter replacement mechanism and a detection mechanism; two connecting covers are provided, and both connecting covers are fixedly mounted on the outside of the casing; the medium-efficiency filter is plugged into the inside of the casing; the activated carbon filter is plugged into the inside of the casing; two groups of fixed brackets are provided, and both groups of fixed brackets are fixedly connected to the outside of the casing; two rotating shafts are provided, and both rotating shafts are rotatably connected to the inner sides of the two groups of fixed brackets; the upper and lower ends of the primary filter are respectively covered on the outsides of the two rotating shafts, and the middle part of the primary filter passes through the casing; the filter replacement mechanism is arranged on the outside of the casing; the detection mechanism is arranged on the outside of the casing.

[0008] Furthermore, the filter replacement mechanism includes: a fixing rod and a tensioning shaft; the fixing rod is provided with two groups, and both groups of fixing rods are fixedly connected to the outside of the box; the tensioning shaft is provided with two, and the two tensioning shafts are respectively rotatably connected to the inner sides of the two groups of fixing rods.

[0009] Furthermore, the filter replacement mechanism also includes: a fixed block, a sliding ball, a compression spring, a sliding sheet, a ball groove, an adjusting piece and a fixed spring; the fixed block is fixedly connected to the outer side of the upper fixed bracket; there are two sliding balls, and both sliding balls are slidably connected to the inner side of the fixed block; there are two compression springs, one end of the two compression springs is respectively fixedly connected to the outer sides of the two sliding balls, and the other ends of the two compression springs are fixedly connected to the inner side of the fixed block; the sliding sheet is slidably connected to the outer side of the upper end rotating shaft; there are multiple ball grooves, and multiple ball grooves are opened on the inner side of the sliding sheet; the adjusting piece is threadedly connected to the outer side of the upper end rotating shaft; one end of the fixed spring is fixedly connected to the outer side of the sliding sheet, and the other end of the fixed spring is against the outer side of the adjusting piece.

[0010] Furthermore, the filter replacement mechanism also includes: a spiral spring; the inner ring of the spiral spring is fixedly connected to the outer side of the lower end rotating shaft, and the outer ring of the spiral spring is fixedly connected to the outer side of the lower end fixed bracket.

[0011] Furthermore, the filter replacement mechanism also includes: a fixed wheel, a limiting groove, a right-angle rod, a limiting pin and a limiting spring; the fixed wheel is fixedly connected to the outer side of the lower end rotating shaft; there are multiple limiting grooves, and the multiple limiting grooves are all opened on the outer side of the fixed wheel; the right-angle rod is fixedly connected to the lower end of the box body, and the right-angle rod is connected to the inside of the box body; the limiting pin is slidably connected to the inner side of the right-angle rod; there are two limiting springs, one end of the two limiting springs is fixedly connected to the outer side of the limiting pin, and the other end of the two limiting springs is fixedly connected to the inner side of the right-angle rod.

[0012] Furthermore, the detection mechanism includes: a push switch, a hinged plate and a buzzer; the push switch is fixedly mounted on the upper end surface of the box; the hinged plate is hinged at the upper end of the push switch, and a torsion spring is provided at the hinge between the hinged plate and the push switch; the buzzer is fixedly mounted on the outside of the box, and the buzzer is electrically connected to the push switch.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model realizes automatic replacement of the primary filter screen in the box body by setting the filter screen replacement mechanism. When the primary filter screen in the box body is blocked, the air pressure in the box body will be reduced under the action of the fan. At this time, the limit pin will slide backward under the action of the air pressure, and the sliding of the limit pin will disengage from the limit groove, causing the fixed wheel to lose the limit. The rotating shaft at the lower end will rotate under the action of the vortex spring to reel in the primary filter screen, so as to achieve the effect of replacing the primary filter screen inside the box body, reduce the frequency of manual replacement of the primary filter screen, improve work efficiency and reduce labor intensity. The detection mechanism is set to realize the detection of the residual amount of the primary filter screen. As the upper rotating shaft rotates, the residual amount of the primary filter screen is detected. After the primary filter on the outside of the shaft is unwound, the hinged plate will tilt under the action of the torsion spring. When the hinged plate tilts, it will trigger the press switch. At this time, the buzzer will be connected to the power supply and make a sound, prompting the staff to replace it in time to prevent the primary filter in the box from being blocked and affecting the use effect of the filter and the service life of subsequent equipment, thereby improving practicality and extending service life. Through the setting of the above-mentioned mechanism, automatic replacement of the primary filter in the box is realized, reducing the frequency of manual replacement of the primary filter, improving work efficiency, reducing labor intensity, and realizing the detection of the remaining amount of the primary filter, thereby improving practicality and extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the cross-section of the main body of the utility model.

[0017] Figure 3 It is a structural schematic diagram of a right-angle rod of the utility model.

[0018] Figure 4 It is a structural schematic diagram of a cross-section of a fixing block of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the volute spring of the utility model.

[0020] Figure 6 This utility model Figure 1 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0021] Figure 7 This utility model Figure 3 Schematic diagram of the structure with a partial enlargement at point B in the middle.

[0022] Figure 8 It is a structural schematic diagram of the buzzer of the utility model.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0024] 1. Box body; 2. Connecting cover; 3. Medium-efficiency filter; 4. Activated carbon filter; 5. Fixed bracket; 6. Rotating shaft; 7. Primary filter; 8. Fixed rod; 9. Tensioning shaft; 10. Fixed block; 11. Sliding ball; 12. Compression spring; 13. Sliding sheet; 14. Ball groove; 15. Adjusting piece; 16. Fixed spring; 17. Volute spring; 18. Fixed wheel; 19. Limiting groove; 20. Right-angle rod; 21. Limiting pin; 22. Limiting spring; 23. Push switch; 24. Hinge plate; 25. Buzzer. DETAILED DESCRIPTION

[0025] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0026] Embodiment 1:

[0027] As attached Figure 1-Figure 7 As shown:

[0028] The utility model provides a filter for fresh air treatment, comprising a box body 1, a connecting cover 2, a medium-efficiency filter screen 3, an activated carbon filter screen 4, a fixing bracket 5, a rotating shaft 6, a primary filter screen 7 and a filter screen replacement mechanism; two connecting covers 2 are provided, and the two connecting covers 2 are fixedly installed on the outer side of the box body 1; the medium-efficiency filter screen 3 is plugged into the inner side of the box body 1; the activated carbon filter screen 4 is plugged into the inner side of the box body 1; two groups of fixing brackets 5 are provided, and the two groups of fixing brackets 5 are fixedly connected to the outer side of the box body 1; two rotating shafts 6 are provided, and the two rotating shafts 6 are respectively rotatably connected to the inner sides of the two groups of fixing brackets 5; the upper and lower ends of the primary filter screen 7 are respectively covered on the outer sides of the two rotating shafts 6, and the middle part of the primary filter screen 7 passes through the box body 1; the filter screen replacement mechanism is arranged on the outer side of the box body 1.

[0029] Among them, the filter replacement mechanism includes: a fixed rod 8, a tensioning shaft 9, a fixed block 10, a sliding ball 11, a compression spring 12, a sliding sheet 13, a ball groove 14, an adjusting member 15, a fixed spring 16, a volute spring 17, a fixed wheel 18, a limiting groove 19, a right-angle rod 20, a limiting pin 21 and a limiting spring 22; the fixed rod 8 is provided with two groups, and the two groups of fixed rods 8 are fixedly connected to the outside of the box body 1; there are two tensioning shafts 9, and the two tensioning shafts 9 are respectively rotatably connected to the inner sides of the two groups of fixed rods 8; the fixed block 10 is fixedly connected to the outer side of the upper fixed bracket 5; there are two sliding balls 11, and the two sliding balls 11 are slidably connected to the inner side of the fixed block 10; there are two compression springs 12, one end of the two compression springs 12 is respectively fixedly connected to the outer sides of the two sliding balls 11, and the other ends of the two compression springs 12 are fixedly connected to the inner side of the fixed block 10; the sliding sheet 13 is slidably connected to the outer side of the upper end rotating shaft 6 side; there are multiple ball grooves 14, and multiple ball grooves 14 are all opened on the inner side of the sliding sheet 13; the adjusting member 15 is threadedly connected to the outer side of the upper end rotating shaft 6; one end of the fixing spring 16 is fixedly connected to the outer side of the sliding sheet 13, and the other end of the fixing spring 16 is against the outer side of the adjusting member 15; the inner ring of the spiral spring 17 is fixedly connected to the outer side of the lower end rotating shaft 6, and the outer ring of the spiral spring 17 is fixedly connected to the outer side of the lower end fixed bracket 5; the fixing wheel 18 is fixedly connected to the outer side of the lower end rotating shaft 6; there are multiple limit grooves 19, and multiple limit grooves 19 are all opened on the outer side of the fixing wheel 18; the right-angle rod 20 is fixedly connected to the lower end of the box body 1, and the right-angle rod 20 is connected to the inside of the box body 1; the limit pin 21 is slidably connected to the inner side of the right-angle rod 20; there are two limit springs 22, one end of the two limit springs 22 is fixedly connected to the outer side of the limit pin 21, and the other end of the two limit springs 22 is fixedly connected to the inner side of the right-angle rod 20.

[0030] Specific usage and function of this embodiment: During the use of the filter, when the primary filter screen 7 in the box body 1 is blocked, the air pressure in the box body 1 will be reduced under the action of the fan. At this time, the limit pin 21 will slide backward under the action of the air pressure, and the sliding of the limit pin 21 will disengage from the limit groove 19, causing the fixed wheel 18 to lose its limit. The lower end of the rotating shaft 6 will rotate under the action of the volute spring 17 to reel in the primary filter screen 7 to achieve the effect of replacing the primary filter screen 7 inside the box body 1, and the sliding ball 11 will press against the inner side of the ball groove 14 under the action of the compression spring 12 to achieve the tensioning of the primary filter screen 7. When the replacement is completed, the primary filter screen 7 takes in air normally. At this time, the air pressure in the box body 1 is restored, and the limit pin 21 will be inserted into the inner side of the limit groove 19 under the action of the limit spring 22 to limit the lower end of the rotating shaft 6.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, Figure 8As shown, the detection mechanism includes: a push switch 23, a hinged plate 24 and a buzzer 25; the detection mechanism is arranged on the outside of the box body 1; the push switch 23 is fixedly installed on the upper end surface of the box body 1; the hinged plate 24 is hinged at the upper end of the push switch 23, and a torsion spring is provided at the hinge between the hinged plate 24 and the push switch 23; the buzzer 25 is fixedly installed on the outside of the box body 1, and the buzzer 25 is electrically connected to the push switch 23.

[0033] Specific usage and function of this embodiment: after the primary filter 7 on the outer side of the upper rotating shaft 6 is unwound, the hinged plate 24 will tilt under the action of the torsion spring. When the hinged plate 24 tilts, it will trigger the press switch 23. At this time, the buzzer 25 will be connected to the power supply and make a sound, prompting the staff to replace it in time.

Claims

1. A filter for fresh air treatment, comprising a housing (1), a connection cover (2), a medium-efficiency filter (3), an activated carbon filter (4), a fixing bracket (5), a rotating shaft (6), a primary filter (7), a filter replacement mechanism and a detection mechanism; the connection cover (2) is provided with two, and the two connection covers (2) are fixedly mounted on the outside of the housing (1); the medium-efficiency filter (3) is plugged into the inside of the housing (1); the activated carbon filter (4) is plugged into the inside of the housing (1); the characteristics are: The fixed brackets (5) are provided with two groups, and the two groups of fixed brackets (5) are fixedly connected to the outside of the box (1); the rotating shafts (6) are provided with two groups, and the two rotating shafts (6) are respectively rotatably connected to the inside of the two groups of fixed brackets (5); the upper and lower ends of the primary filter (7) are respectively covered on the outside of the two rotating shafts (6), and the middle part of the primary filter (7) passes through the box (1); the filter replacement mechanism is arranged on the outside of the box (1); and the detection mechanism is arranged on the outside of the box (1).

2. A filter for fresh air treatment as claimed in claim 1, characterized in that: The filter screen replacement mechanism comprises: a fixing rod (8) and a tensioning shaft (9); the fixing rod (8) is provided with two groups, and the two groups of fixing rods (8) are fixedly connected to the outside of the box body (1); the tensioning shaft (9) is provided with two groups, and the two tensioning shafts (9) are respectively rotatably connected to the inside of the two groups of fixing rods (8).

3. A filter for fresh air treatment as claimed in claim 2, characterized in that: The filter screen replacement mechanism further comprises: a fixed block (10), a sliding ball (11), a compression spring (12), a sliding sheet (13), a ball groove (14), an adjusting member (15) and a fixed spring (16); the fixed block (10) is fixedly connected to the outer side of the upper fixed bracket (5); two sliding balls (11) are provided, and both sliding balls (11) are slidably connected to the inner side of the fixed block (10); two compression springs (12) are provided, and one end of the two compression springs (12) is fixedly connected to the two sliding balls respectively. (11), the other ends of the two compression springs (12) are fixedly connected to the inner side of the fixed block (10); the sliding sheet (13) is slidably connected to the outer side of the upper end rotating shaft (6); a plurality of ball grooves (14) are provided, and the plurality of ball grooves (14) are all opened on the inner side of the sliding sheet (13); the adjusting member (15) is threadedly connected to the outer side of the upper end rotating shaft (6); one end of the fixing spring (16) is fixedly connected to the outer side of the sliding sheet (13), and the other end of the fixing spring (16) is against the outer side of the adjusting member (15).

4. A filter for fresh air treatment as claimed in claim 3, characterized in that: The filter screen replacement mechanism further comprises: a scroll spring (17); the inner ring of the scroll spring (17) is fixedly connected to the outer side of the lower end rotating shaft (6), and the outer ring of the scroll spring (17) is fixedly connected to the outer side of the lower end fixed bracket (5).

5. A filter for fresh air treatment as claimed in claim 4, characterized in that: The filter screen replacement mechanism further comprises: a fixed wheel (18), a limiting groove (19), a right-angle rod (20), a limiting pin (21) and a limiting spring (22); the fixed wheel (18) is fixedly connected to the outer side of the lower end rotating shaft (6); a plurality of limiting grooves (19) are provided, and the plurality of limiting grooves (19) are all arranged on the outer side of the fixed wheel (18); the right-angle rod (20) is fixedly connected to the lower end of the box body (1), and the right-angle rod (20) is connected to the inside of the box body (1); the limiting pin (21) is slidably connected to the inner side of the right-angle rod (20); two limiting springs (22) are provided, one end of the two limiting springs (22) is fixedly connected to the outer side of the limiting pin (21), and the other end of the two limiting springs (22) is fixedly connected to the inner side of the right-angle rod (20).

6. A filter for fresh air treatment as claimed in claim 1, characterized in that: The detection mechanism comprises: a push switch (23), a hinged plate (24) and a buzzer (25); the push switch (23) is fixedly mounted on the upper end surface of the box (1); the hinged plate (24) is hinged on the upper end of the push switch (23), and a torsion spring is provided at the hinged position between the hinged plate (24) and the push switch (23); the buzzer (25) is fixedly mounted on the outer side of the box (1), and the buzzer (25) is electrically connected to the push switch (23).

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