Fresh air filtering device for heating and ventilation engineering

Abstract

The utility model relates to the technical field of fresh air filtering of heating and ventilation engineering, in particular to a fresh air filtering device for heating and ventilation engineering, which comprises a filtering device main body and a support, an air inlet pipe and an air outlet pipe are respectively mounted at two ends of the filtering device main body, an easily detachable structure is arranged on the air inlet pipe, and a secondary filtering cover is mounted on the air outlet pipe. According to the utility model, through the arrangement of the easy-to-disassemble structure, the traditional mode that the primary filter cover and the air inlet pipe are mounted through sealant is changed, so that the phenomenon that the sealant between the primary filter cover and the air inlet pipe is aged to form strong adhesive force after long-time use can be avoided; the problem that the replacement cost of the first-stage filter cover is greatly increased due to violent dismantling can be solved, and the structure has the advantages that the first-stage filter cover can be conveniently dismantled by personnel, and the problem that the personnel are inconvenient to operate in some places with narrow pipelines can also be solved; therefore, the mounting and dismounting difficulty of the primary filter cover can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to a fresh air filtration device for HVAC engineering, and in particular to a fresh air filtration device for HVAC engineering, belonging to the field of fresh air filtration technology for HVAC engineering. Background Technology

[0002] With the acceleration of urbanization and the aggravation of industrial pollution, indoor air quality (IAQ) has become a focus of global public health concern. According to statistics from the World Health Organization (WHO), about 90% of the world's population is exposed to air with PM2.5 exceeding the standard. The accumulation of pollutants (such as VOCs, bacteria, viruses, etc.) in the airtightness of buildings makes fresh air systems an indispensable part of modern buildings. Therefore, most buildings now install a fresh air filtration device to filter pollutants in the air.

[0003] Traditional fresh air filtration devices used in HVAC engineering have a simple structure. Because the filters accumulate dirt over time, they need to be disassembled and cleaned regularly. However, some filters are installed using sealant, which, after prolonged use, causes the sealant between the filter and the frame to age and develop strong adhesion, requiring forceful removal. This significantly increases the replacement cost of the filters. Furthermore, the sealant application requires a caulking gun, which is inconvenient in narrow ducts, further increasing the difficulty of filter installation.

[0004] Therefore, there is an urgent need to improve a fresh air filtration device used in HVAC engineering to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a fresh air filtration device for HVAC engineering. By designing an easily detachable structure, it changes the traditional method of installing the primary filter cover and the air inlet pipe using sealant. This avoids the strong adhesion caused by the aging of the sealant between the primary filter cover and the air inlet pipe after long-term use, and also reduces the problem of significantly increased replacement costs due to forceful removal of the primary filter cover. The advantage of this structure is that it not only facilitates the disassembly of the primary filter cover, but also avoids the problem of inconvenient operation in narrow ducts, thus greatly reducing the difficulty of installing and disassembling the primary filter cover.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A fresh air filtration device for HVAC engineering includes a filter device body and a support frame. An air inlet pipe and an air outlet pipe are respectively installed at both ends of the filter device body. The air inlet pipe is provided with an easy-to-disassemble structure, which includes a primary filter cover sleeved on the air inlet pipe. The air inlet pipe has multiple mounting holes, and a spring is fixedly installed inside the mounting holes. A locking block is fixedly installed at one end of the spring. The primary filter cover has multiple locking holes that cooperate with the locking block. A secondary filter cover is installed on the air outlet pipe.

[0008] Preferably, a pull ball is fixedly installed on one side of the primary filter cover, and one end of the locking block is set to be arc-shaped.

[0009] Preferably, the air outlet pipe has a slot that matches the secondary filter cover, and both the air outlet pipe and the secondary filter cover have multiple limiting holes. A limiting rod connected to the secondary filter cover is installed on the air outlet pipe.

[0010] Preferably, a plurality of first fixing plates are fixedly installed on the air outlet pipe, and a first electric telescopic rod is fixedly installed on one side of the first fixing plate. The output end of the first electric telescopic rod is equipped with a fixing rod connected to the limiting rod.

[0011] Preferably, a fixing sleeve is fixedly installed at the output end of the first electric telescopic rod, and a fixing block connected to the fixing sleeve is fixedly installed at one end of the fixing rod. Both the fixing sleeve and the fixing block are provided with connecting holes, and an insert rod is movably installed inside the connecting hole. A latch is fixedly installed at one end of the insert rod.

[0012] Preferably, a plurality of second fixing plates are fixedly installed on the main body of the filter device, a second electric telescopic rod is fixedly installed at the bottom of the second fixing plate, and a support plate is installed on the upper part of the second electric telescopic rod.

[0013] Preferably, a connecting block is fixedly installed at the output end of the second electric telescopic rod, and threaded holes are opened on both the support plate and the connecting block. Bolts connected to the connecting block are installed on the support plate.

[0014] This utility model has at least the following beneficial effects:

[0015] By adopting an easily detachable structure, this design changes the traditional method of installing the primary filter cover and the air inlet duct using sealant. This avoids the strong adhesion caused by the aging of the sealant between the primary filter cover and the air inlet duct after long-term use. It also reduces the problem of significantly increased replacement costs due to forceful removal of the primary filter cover. The advantage of this structure is that it not only facilitates the disassembly of the primary filter cover but also avoids the problem of inconvenience for personnel in narrow ducts. Therefore, the difficulty of installing and disassembling the primary filter cover is greatly reduced. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the air outlet duct structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the second electric telescopic rod structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 5 For the present utility model Figure 2 Enlarged view at point B in the middle;

[0022] Figure 6 For the present utility model Figure 3 Enlarged view of point C in the middle.

[0023] In the diagram, 1. Filter device body; 2. Bracket; 3. Inlet pipe; 4. Outlet pipe; 5. Easily detachable structure; 6. Primary filter cover; 7. Mounting hole; 8. Spring; 9. Locking block; 10. Locking hole; 11. Secondary filter cover; 12. Pull ball; 13. Groove; 14. Limiting hole; 15. Limiting rod; 16. First fixing plate; 17. First electric telescopic rod; 18. Fixing rod; 19. Fixing sleeve; 20. Fixing block; 21. Connecting hole; 22. Insert rod; 23. Bolt; 24. Second fixing plate; 25. Second electric telescopic rod; 26. Support plate; 27. Connecting block; 28. Threaded hole; 29. ​​Bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-6 As shown in the figure, this embodiment provides a fresh air filtration device for HVAC engineering.

[0026] A fresh air filtration device for HVAC engineering includes a filter body 1 and a support 2. An air inlet pipe 3 and an air outlet pipe 4 are respectively installed at both ends of the filter body 1. An easy-to-remove structure 5 is provided on the air inlet pipe 3. The easy-to-remove structure 5 includes a primary filter cover 6 fitted onto the air inlet pipe 3. Multiple mounting holes 7 are provided on the air inlet pipe 3, and springs 8 are fixedly installed inside the mounting holes 7. A locking block 9 is fixedly installed at one end of the springs 8. Multiple locking holes 10 that cooperate with the locking blocks 9 are provided inside the primary filter cover 6. A secondary filter cover 11 is installed on the air outlet pipe 4. The easy-to-remove structure 5 changes the traditional method of installing the primary filter cover 6 and the air inlet pipe 3 using sealant. This avoids the strong adhesion caused by the aging of the sealant between the primary filter cover 6 and the air inlet pipe 3 after long-term use, and also reduces the significantly increased replacement cost of the primary filter cover 6 due to forceful removal. When installing the primary filter cover 6 on the filter body 1, first align the inner ring of the primary filter cover 6 with the outer ring of the air inlet pipe 3, and then... 6. Slowly press down to slide it into the air inlet pipe 3. During the insertion of the primary filter cover 6, the locking block 9 will be squeezed and retracted into the mounting hole 7. When the locking block 9 moves to the position of the locking hole 10, the locking block 9 can be popped out and locked into the locking hole 10 under the elastic action of the spring 8, thus fixing the primary filter cover 6 to the air inlet pipe 3 to prevent it from falling off. The installation of the primary filter cover 6 is thus completed. When the primary filter cover 6 is pulled, the locking block 9 will be squeezed and retracted to disengage from the locking hole 10. Therefore, the primary filter cover 6 can be removed from the air inlet pipe 3 without tools, making it convenient for personnel to disassemble and clean the primary filter cover 6. The secondary filter cover 11 can perform secondary filtration on the air filtered by the primary filter cover 6, thereby filtering out fine pollutants in the air and making the purification effect of the filter device body 1 better. The advantage of this structure is that it not only makes it convenient for personnel to disassemble the primary filter cover 6, but also avoids the problem of inconvenient operation in some narrow pipes. Therefore, the difficulty of installing and disassembling the primary filter cover 6 is greatly reduced.

[0027] like Figure 1 and Figure 4As shown, a pull ball 12 is fixedly installed on one side of the primary filter cover 6, and one end of the locking block 9 is set in an arc shape. With the pull ball 12 and the locking block 9 having an arc shape at one end, when disassembling the primary filter cover 6, personnel can easily remove the primary filter cover 6 by simply pulling the pull ball 12. At the same time, the arc design at one end of the locking block 9 can reduce the friction at one end of the locking block 9, making the inner wall of the primary filter cover 6 slide more smoothly on the locking block 9. Therefore, it not only makes it easier for personnel to pull the pull ball 12, but also reduces the wear between the primary filter cover 6 and the air inlet pipe 3.

[0028] like Figure 5 As shown, the air outlet pipe 4 has a slot 13 that matches the secondary filter cover 11. Both the air outlet pipe 4 and the secondary filter cover 11 have multiple limiting holes 14. A limiting rod 15 connected to the secondary filter cover 11 is installed on the air outlet pipe 4. By setting the slot 13, limiting holes 14 and limiting rod 15, the secondary filter cover 11 is aligned with the slot 13 and inserted into the air outlet pipe 4. Then, the limiting rod 15 is inserted into the limiting hole 14 to connect the secondary filter cover 11 and the air outlet pipe 4. This can improve the stability of the secondary filter cover 11 on the air outlet pipe 4 and prevent the secondary filter cover 11 from falling off the air outlet pipe 4. When the limiting rod 15 is removed from the limiting hole 14, it is convenient for personnel to disassemble and clean the secondary filter cover 11.

[0029] like Figure 5 As shown, multiple first fixing plates 16 are fixedly installed on the air outlet duct 4. A first electric telescopic rod 17 is fixedly installed on one side of the first fixing plate 16. A fixing rod 18 connected to the limiting rod 15 is installed at the output end of the first electric telescopic rod 17. With the arrangement of the first fixing plate 16, the first electric telescopic rod 17 and the fixing rod 18, when the limiting rod 15 is inserted into the limiting hole 14, the first electric telescopic rod 17 is activated to extend and drive the fixing rod 18 to move onto the limiting rod 15 and engage inside it. This can limit the limiting rod 15 and prevent the limiting rod 15 from loosening and causing the secondary filter cover 11 to fall off. Therefore, the stability of the limiting rod 15 in the limiting hole 14 is improved. When the first electric telescopic rod 17 retracts, it can drive the fixing rod 18 to disengage from the limiting rod 15, so that personnel can easily insert and remove the limiting rod 15 normally.

[0030] like Figure 5As shown, a fixing sleeve 19 is fixedly installed at the output end of the first electric telescopic rod 17. A fixing block 20 connected to the fixing sleeve 19 is fixedly installed at one end of the fixing rod 18. Both the fixing sleeve 19 and the fixing block 20 have connecting holes 21. An insert rod 22 is movably installed inside the connecting hole 21. A latch 23 is fixedly installed at one end of the insert rod 22. With the arrangement of the fixing sleeve 19, fixing block 20, connecting hole 21, insert rod 22 and latch 23, after the fixing block 20 is inserted into the fixing sleeve 19, ... Next, insert the plug rod 22 into the inside of the connecting hole 21 to connect the fixing block 20 and the fixing sleeve 19. Rotate the plug rod 22 to adjust the angle of the latch 23 to be perpendicular to the angle of the connecting hole 21, so that the fixing block 20 is fixed inside the fixing sleeve 19 to prevent it from falling off. When the plug rod 22 is rotated to adjust the angle of the latch 23 to be consistent with the angle of the connecting hole 21, the plug rod 22 can be pulled out from the inside of the connecting hole 21, so that it is convenient for personnel to disassemble and replace the fixing rod 18 when it is damaged.

[0031] like Figure 1 and Figure 2 As shown, multiple second fixing plates 24 are fixedly installed on the main body 1 of the filter device. A second electric telescopic rod 25 is fixedly installed at the bottom of the second fixing plate 24. A support plate 26 is installed on the upper part of the second electric telescopic rod 25. With the arrangement of the second fixing plate 24, the second electric telescopic rod 25 and the support plate 26, the second electric telescopic rod 25 is activated to extend and drive the support plate 26 to descend until the support plate 26 descends to the pipe contact surface. The support plate 26 can further support and stabilize the main body 1 of the filter device, and prevent the main body 1 of the filter device from shaking, which would affect the internal filtration system.

[0032] like Figure 6 As shown, a connecting block 27 is fixedly installed at the output end of the second electric telescopic rod 25. Threaded holes 28 are provided on both the support plate 26 and the connecting block 27. Bolts 29 that connect to the connecting block 27 are installed on the support plate 26. By setting up the connecting block 27, the threaded holes 28, and the bolts 29, the support plate 26 and the connecting block 27 are brought together, and then the two are fixed by the bolts 29, thereby preventing the support plate 26 from falling off the second electric telescopic rod 25. After removing the bolts 29 from the inside of the threaded holes 28, the support plate 26 can be disassembled and replaced when it is damaged.

[0033] In this embodiment, as Figures 1-6 As shown in the figure, the working process of a fresh air filtration device for HVAC engineering provided in this embodiment is as follows:

[0034] When installing the primary filter cover 6 onto the main body 1 of the filter device, first align the inner ring of the primary filter cover 6 with the outer ring of the air inlet pipe 3, and then slowly press the primary filter cover 6 to slide it into the air inlet pipe 3. During the insertion of the primary filter cover 6, the locking block 9 will be squeezed and retracted into the mounting hole 7. When the locking block 9 moves to the position of the locking hole 10, the locking block 9 can pop out under the elastic action of the spring 8 and lock into the inside of the locking hole 10, thereby fixing the primary filter cover 6 onto the air inlet pipe 3 to prevent it from falling off. The installation of the primary filter cover 6 is then completed. When the primary filter cover 6 is pulled, the locking block 9 will be squeezed and retracted and disengaged from the locking hole 10. Therefore, the primary filter cover 6 can be removed from the air inlet pipe 3 without tools, making it convenient for personnel to disassemble and clean the primary filter cover 6. The secondary filter cover 11 can perform secondary filtration on the air filtered by the primary filter cover 6, thereby filtering out fine pollutants in the air and making the purification effect of the main body 1 of the filter device better.

[0035] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A fresh air filtration device for HVAC engineering, comprising a filter device body (1) and a support (2), wherein an air inlet pipe (3) and an air outlet pipe (4) are respectively installed at both ends of the filter device body (1), characterized in that: The air inlet pipe (3) is provided with an easy-to-disassemble structure (5), the easy-to-disassemble structure (5) includes a primary filter cover (6) sleeved on the air inlet pipe (3), the air inlet pipe (3) is provided with multiple mounting holes (7), a spring (8) is fixedly installed inside the mounting hole (7), a locking block (9) is fixedly installed at one end of the spring (8), the primary filter cover (6) is provided with multiple locking holes (10) that cooperate with the locking block (9), and a secondary filter cover (11) is installed on the air outlet pipe (4).

2. The fresh air filtering device for heating and ventilation engineering according to claim 1, characterized in that: A pull ball (12) is fixedly installed on one side of the primary filter cover (6), and one end of the locking block (9) is set to be arc-shaped.

3. The fresh air filtering device for heating and ventilation engineering according to claim 1, characterized in that: The air outlet pipe (4) is provided with a slot (13) matching the secondary filter cover (11). Both the air outlet pipe (4) and the secondary filter cover (11) are provided with multiple limiting holes (14). The air outlet pipe (4) is equipped with a limiting rod (15) connected to the secondary filter cover (11).

4. The fresh air filtering device for heating and ventilation engineering according to claim 3, characterized in that: Multiple first fixing plates (16) are fixedly installed on the air outlet pipe (4). A first electric telescopic rod (17) is fixedly installed on one side of the first fixing plate (16). A fixing rod (18) connected to the limiting rod (15) is installed at the output end of the first electric telescopic rod (17).

5. The fresh air filtering device for heating and ventilation engineering according to claim 4, characterized in that: The output end of the first electric telescopic rod (17) is fixedly installed with a fixed sleeve (19), and one end of the fixed rod (18) is fixedly installed with a fixed block (20) connected to the fixed sleeve (19). Both the fixed sleeve (19) and the fixed block (20) are provided with connecting holes (21). A plug rod (22) is movably installed inside the connecting hole (21), and one end of the plug rod (22) is fixedly installed with a latch (23).

6. The fresh air filtering device for heating and ventilation engineering according to claim 1, characterized in that: Multiple second fixing plates (24) are fixedly installed on the main body (1) of the filter device. A second electric telescopic rod (25) is fixedly installed at the bottom of the second fixing plate (24), and a support plate (26) is installed on the top of the second electric telescopic rod (25).

7. The fresh air filtering device for heating and ventilation engineering according to claim 6, characterized in that: The output end of the second electric telescopic rod (25) is fixedly installed with a connecting block (27). Both the support plate (26) and the connecting block (27) are provided with threaded holes (28). The support plate (26) is provided with bolts (29) that are connected to the connecting block (27).

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