A circulating air duct filter and a medium-efficiency air filter

Abstract

This invention discloses a circulating air duct filter and a medium-efficiency air filter, relating to the field of filter technology. It includes a filter guide tube for circulating airflow and a primary filter installed inside the filter guide tube for preliminary air filtration. A magnetic positioning element for connection is provided between the filter guide tube and the primary filter. A primary filtration chamber is provided inside the primary filter, and a first adhesive plate is bonded to the inside of the primary filter, covering the air inlet end of the primary filtration chamber. Through the primary filter installed inside the filter guide tube, and the primary filtration chamber located inside the primary filter, with the first adhesive plate bonded to the inside of the primary filter at the air inlet end of the primary filtration chamber, when air moves upward within the primary filter, a guide spiral plate guides the upward airflow, causing the air to rotate upwards. Dust in the air moves outwards within the primary filter under the action of centrifugal force.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and more particularly to a circulating air duct filter and a medium-efficiency air filter. Background Technology

[0002] Air filters are air filtration devices, generally used in cleanrooms, clean factories, laboratories, and clean rooms, or for dust prevention in electronic, mechanical, and communication equipment. They are available in pre-filters, medium-efficiency filters, high-efficiency filters, and sub-high-efficiency filters, each with different standards and performance levels.

[0003] The filter screen is the core component of the air filter. When the filter screen filters the air, it is difficult to circulate and filter dust. At the same time, when dust accumulates on the side of the filter screen, it is easy to cause the filter screen to become clogged. After the filter screen is clogged, the filter screen will have poor filtration effect. In addition, the dust that clogs the filter screen is also easy to fall off due to the air at the end of the filter screen, causing dust to pollute the environment outside the filter screen. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides the following technical solution: a circulating air duct filter, comprising a filter guide pipe for circulating airflow, and a primary filter installed inside the filter guide pipe for preliminary air filtration. A magnetic positioning element for connection is provided between the filter guide pipe and the primary filter. A primary filtration chamber is provided on the inner side of the primary filter. A first adhesive plate is bonded to the inner side of the primary filter, and the first adhesive plate covers the air inlet end of the primary filtration chamber. A first venting groove is provided in the primary filtration chamber away from the air inlet end. A second filter is provided above the filter guide pipe. A guide spiral plate is provided in the middle of the primary filter.

[0005] The second filter screen includes a filter screen plate, a second filter chamber is provided at the lower part of the filter screen plate, a second adhesive plate is bonded to the lower end of the filter screen plate and the second adhesive plate covers the lower part of the second filter chamber, a second air vent is provided at the top of the second filter chamber, and a nano silver sponge filter screen, a silver ion antibacterial filter screen and an outer non-woven fabric filter screen are bonded sequentially on the upper surface of the filter screen plate.

[0006] As an improvement to the above technical solution, the magnetic positioning component includes a support platform bonded to the inner surface of the upper end of the filter guide tube. The lower surface of the support platform and the upper surface of the primary filter are both provided with grooves, and magnetic rings are bonded to the grooves provided in the primary filter and the support platform, with the magnetic poles of the two magnetic rings facing each other being opposite.

[0007] As an improvement to the above technical solution, the filter guide tube includes a central circular tube, a U-shaped annulus at the lower end of the circular tube, and a horn tube at the upper end of the circular tube.

[0008] As an improvement to the above technical solution, three primary filtration chambers are vertically arranged inside the primary filter screen.

[0009] As an improvement to the above technical solution, the lower part of the filter plate is provided with six second filter chambers, and the six second filter chambers are on the same plane.

[0010] A medium-efficiency air filter with a circulating air duct filter screen includes a housing disposed outside the filter screen guide tube. The lower end of the housing is provided with a second limiting ring for supporting the lower end of the filter screen guide tube. The middle part of the housing is fixed with a first limiting ring for supporting the upper end of the filter screen guide tube. A fan is also installed in the middle of the filter screen guide tube. A guide spiral plate is installed below the fan and is located in the inner ring of the primary filter screen. A connecting flange is fixed on the outer surface of the upper end of the housing.

[0011] As an improvement to the above technical solution, the inner ring of the primary filter screen is conical, and the flow guiding spiral plate is a conical spiral structure.

[0012] As an improvement to the above technical solution, two support rings are fixed at the upper end of the housing, and the second filter screen is installed between the two support rings.

[0013] As an improvement to the above technical solution, a protective net is installed at the upper end of the shell, and a magnetic column is fixedly installed on the outer side of the protective net, and the magnetic column is fixed to the support ring by magnetic force.

[0014] As an improvement to the above technical solution, a wind speed sensor is installed on the protective net.

[0015] The beneficial effects of this invention are:

[0016] 1. A primary filter is installed inside the filter guide tube, and a primary filtration chamber is located inside the primary filter. The first adhesive plate bonded to the inside of the primary filter is located at the air inlet of the primary filtration chamber. When air moves upward within the primary filter, the guide spiral plate guides the upward airflow, causing the air to rotate as it rises. Dust in the air moves outward within the primary filter under centrifugal force, causing a large amount of dust to push open the first adhesive plate and enter the primary filtration chamber. The air then passes through the primary filter and enters the filter guide tube. The air in the filter guide tube circulates and moves upward, achieving the initial dust removal purpose after air circulation and filtration. The first adhesive plate at the air inlet of the primary filtration chamber ensures unidirectional air intake, preventing dust from accumulating. The air remains inside the primary filtration chamber, while the second filter, located above the filter guide tube, performs secondary filtration. This second filter consists of a filter plate, a second filtration chamber, a second rubber plate, a second air vent, a nano-silver sponge filter, a silver ion antibacterial filter, and an outer non-woven fabric filter. As the air passes through the primary filter and rises, it pushes open the second rubber plate and enters the second filtration chamber. The air entering the second filtration chamber passes through the filter plate, is filtered again, and then passes through the nano-silver sponge filter, silver ion antibacterial filter, and outer non-woven fabric filter for secondary filtration. This improves the air filtration effect and increases the cleanliness of the air. The second rubber plate, located at the air inlet of the second filtration chamber, enables unidirectional air intake, causing dust to remain inside the second filtration chamber.

[0017] 2. A magnetic positioning component consisting of a support platform and a magnetic ring is used. The support platform is bonded to the inner surface of the upper end of the filter guide tube, and the magnetic ring is bonded to the lower surface of the support platform and the groove opened at the upper end of the primary filter. This facilitates the primary filter to be fixed by the magnetic positioning component after it is installed in the filter guide tube, increasing the stability of the primary filter installed inside the filter guide tube.

[0018] 3. The filter guide tube is set outside the filter guide tube, and the second limiting ring is set at the lower end of the housing and the first limiting ring is fixed in the middle of the housing. The first limiting ring supports the upper end of the filter guide tube and the second limiting ring supports the lower end of the filter guide tube. This increases the stability of the filter guide tube installed inside the housing. A fan is installed in the middle of the filter guide tube, which facilitates the entry of air from outside the housing. The air entering the primary filter is rotated by the guide spiral plate, so that more dust is carried into the primary filtration chamber when the air rotates. Attached Figure Description

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

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a cross-sectional view of the present invention.

[0023] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 for Figure 3 Enlarged structural diagram at point B in the middle.

[0025] Reference numerals: 1. Housing; 2. Filter guide tube; 3. Primary filter; 31. Primary filtration chamber; 32. First rubber plate; 33. First venting groove; 4. Support platform; 5. Magnet ring; 6. Second filter; 61. Filter plate; 62. Second filtration chamber; 63. Second rubber plate; 64. Second venting groove; 65. Nano silver sponge filter; 66. Silver ion antibacterial filter; 67. Outer non-woven fabric filter; 7. Fan; 8. Guide spiral plate; 9. First limiting ring; 10. Second limiting ring; 11. Support ring; 12. Protective net; 13. Magnet column; 14. Wind speed sensor; 15. Connecting flange. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] Please see Figure 1-6 The present invention provides a technical solution: a circulating air duct filter, including a filter guide pipe 2 for circulating airflow, and a primary filter 3 for preliminary air filtration installed inside the filter guide pipe 2. A magnetic positioning component for connection is provided between the filter guide pipe 2 and the primary filter 3. A primary filtration chamber 31 is provided on the inner side of the primary filter 3. A first adhesive plate 32 is bonded to the inner side of the primary filter 3, and the first adhesive plate 32 covers the air inlet end of the primary filtration chamber 31. A first venting groove 33 is opened in the primary filtration chamber 31 away from the air inlet end. A second filter 6 is provided above the filter guide pipe 2. A guide spiral plate 8 is provided in the middle of the primary filter 3.

[0028] The second filter 6 includes a filter plate 61, a second filter chamber 62 is provided at the lower part of the filter plate 61, a second adhesive plate 63 is bonded to the lower end of the filter plate 61 and the second adhesive plate 63 covers the lower part of the second filter chamber 62, a second air vent 64 is provided at the top of the second filter chamber 62, and a nano silver sponge filter 65, a silver ion antibacterial filter 66 and an outer non-woven fabric filter 67 are bonded sequentially on the upper surface of the filter plate 61.

[0029] Nano silver sponge filter 65 is made by adding nano silver antibacterial masterbatch to the sponge raw material during high-temperature melting and processing it with a special process. It can provide a long-lasting, stable and safe antibacterial filter.

[0030] Silver ion antibacterial filter 66

[0031] In this embodiment, a primary filter 3 is installed inside the filter guide pipe 2, and a primary filtration chamber 31 is provided inside the primary filter 3. A first adhesive plate 32, bonded to the inner side of the primary filter 3, is located at the air inlet of the primary filtration chamber 31. When air moves upward within the primary filter 3, the guide spiral plate 8 guides the upward airflow, causing the air to rotate upwards. Dust in the air moves outwards within the primary filter 3 under centrifugal force, causing a large amount of dust to push open the first adhesive plate 32 and enter the primary filtration chamber 31. The air then passes through the primary filter 3 and enters the filter guide pipe 2. The air in the filter guide pipe 2 circulates and moves upwards, achieving the initial dust removal purpose after air circulation and filtration. The first adhesive plate 32, located at the air inlet of the primary filtration chamber 31, achieves unidirectional air intake, allowing dust to remain in the primary filter. Inside the filter chamber 31, and above the filter guide pipe 2, a second filter 6 is installed, which performs secondary filtration of the air. The second filter 6 consists of a filter plate 61, a second filter chamber 62, a second rubber plate 63, a second air vent 64, a nano-silver sponge filter 65, a silver ion antibacterial filter 66, and an outer non-woven fabric filter 67. When the air that has passed through the initial filtration moves upward, it pushes open the second rubber plate 63 and enters the second filter chamber 62. The air entering the second filter chamber 62 passes through the filter plate 61, is filtered, and then passes through the nano-silver sponge filter 65, the silver ion antibacterial filter 66, and the outer non-woven fabric filter 67 for secondary filtration, thereby improving the air filtration effect and increasing the cleanliness of the air. The second rubber plate 63 is located at the air inlet of the second filter chamber 62 to achieve unidirectional air intake, so that dust stays inside the second filter chamber 62.

[0032] Specifically, the magnetic positioning component includes a support platform 4 bonded to the inner surface of the upper end of the filter guide tube 2. The lower surface of the support platform 4 and the upper surface of the primary filter 3 are both provided with grooves. Magnet rings 5 ​​are bonded to the grooves provided in the primary filter 3 and the support platform 4. The magnetic poles of the two magnet rings 5 ​​facing each other are opposite. The filter guide tube 2 includes a circular tube in the middle, a U-shaped ring at the lower end of the circular tube, and a horn tube at the upper end of the circular tube.

[0033] In this embodiment, a magnetic positioning component consisting of a support platform 4 and a magnetic ring 5 is used. The support platform 4 is bonded to the inner surface of the upper end of the filter guide tube 2, and the magnetic ring 5 is bonded to the lower surface of the support platform 4 and the groove opened at the upper end of the primary filter 3. This facilitates the primary filter 3 to be fixed by the magnetic positioning component after it is installed in the filter guide tube 2, thereby increasing the stability of the primary filter 3 installed inside the filter guide tube 2.

[0034] Specifically, there are three primary filter chambers 31 arranged vertically inside the primary filter screen 3.

[0035] In this embodiment, the filtered dust is stored in three segments of the three primary filter chambers 31.

[0036] Specifically, there are six second filter chambers 62 located at the lower part of the filter screen plate 61, and the six second filter chambers 62 are located on the same plane.

[0037] In this embodiment, the filtered dust is stored in six segments of the six second filter chambers 62.

[0038] A medium-efficiency air filter with a circulating air duct filter screen includes a housing 1 disposed outside the filter screen guide tube 2. A second limiting ring 10 for supporting the lower end of the filter screen guide tube 2 is disposed at the lower end of the housing 1. A first limiting ring 9 for supporting the upper end of the filter screen guide tube 2 is fixed in the middle of the housing 1. A fan 7 is also installed in the middle of the filter screen guide tube 2. A guide spiral plate 8 is installed below the fan 7 and is located in the inner ring of the primary filter screen 3. A connecting flange 15 is fixed on the outer surface of the upper end of the housing 1.

[0039] In this embodiment, the filter guide pipe 2 is provided outside the filter guide pipe 2, and the second limiting ring 10 is provided at the lower end of the housing 1 and the first limiting ring 9 is fixed in the middle of the housing 1. The first limiting ring 9 supports the upper end of the filter guide pipe 2, and the second limiting ring 10 supports the lower end of the filter guide pipe 2. This increases the stability of the filter guide pipe 2 installed inside the housing 1. The fan 7 is installed in the middle of the filter guide pipe 2, which facilitates the entry of air from outside the housing 1 under the action of the fan 7. This facilitates the rotation of the air entering the primary filter 3 under the action of the guide spiral plate 8, so that the air containing more dust can enter the primary filter chamber 31 when it rotates.

[0040] Specifically, the inner ring of the primary filter 3 is conical, and the flow guide spiral plate 8 has a conical spiral structure.

[0041] In this embodiment, the conical spiral structure guides the airflow through the spiral plate 8.

[0042] Specifically, two support rings 11 are fixed at the upper end of the housing 1, and the second filter screen 6 is installed between the two support rings 11.

[0043] In this embodiment, the two support rings 11 facilitate the support of the second filter screen 6.

[0044] Specifically, a protective net 12 is installed on the upper end of the housing 1, and a magnetic post 13 is fixedly installed on the outer side of the protective net 12, and the magnetic post 13 is fixed to the support ring 11 by magnetic force.

[0045] In this embodiment, the magnetic column 13 and the support ring 11 are magnetically fixed together, so that the protective net 12 protects the second filter 6.

[0046] Specifically, a wind speed sensor 14 is installed on the protective net 12.

[0047] In this embodiment, the wind speed sensor 14 is designed to transmit air signals.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A circulating air duct filter, characterized in that: The system includes a filter guide tube (2) for circulating airflow and a primary filter (3) installed inside the filter guide tube (2) for preliminary air filtration. A magnetic positioning element for connection is provided between the filter guide tube (2) and the primary filter (3). A primary filtration chamber (31) is provided on the inner side of the primary filter (3). A first adhesive plate (32) is bonded to the inner side of the primary filter (3), and the first adhesive plate (32) covers the air inlet end of the primary filtration chamber (31). The first adhesive plate (32) is provided at the air inlet end of the primary filtration chamber (31) to achieve unidirectional air intake. A first venting groove (33) is provided in the primary filtration chamber (31) away from the air inlet end. A second filter (6) is provided above the filter guide tube (2), and a guide spiral plate (8) is provided in the middle of the primary filter (3). The second filter (6) includes a filter plate (61), a second filter chamber (62) is provided at the lower part of the filter plate (61), a second adhesive plate (63) is bonded to the lower end of the filter plate (61), and the second adhesive plate (63) covers the lower part of the second filter chamber (62). The second adhesive plate (63) is provided at the air inlet end of the second filter chamber (62) to achieve unidirectional air intake. A second venting groove (64) is provided at the top of the second filter chamber (62). A nano silver sponge filter (65), a silver ion antibacterial filter (66) and an outer non-woven fabric filter (67) are bonded sequentially on the upper surface of the filter plate (61).

2. The circulating air duct filter according to claim 1, characterized in that: The magnetic positioning component includes a support platform (4) bonded to the inner surface of the upper end of the filter guide tube (2). The lower surface of the support platform (4) and the upper surface of the primary filter (3) are both provided with grooves. Magnet rings (5) are bonded to the grooves of the primary filter (3) and the support platform (4), and the magnetic poles of the two magnet rings (5) are opposite to each other.

3. A circulating air duct filter according to claim 2, characterized in that: The filter guide tube (2) includes a central circular tube, a U-shaped ring at the lower end of the circular tube, and a horn tube at the upper end of the circular tube.

4. A circulating air duct filter according to claim 1, characterized in that: The primary filter screen (3) has three primary filter chambers (31) arranged vertically inside.

5. A circulating air duct filter according to claim 1, characterized in that: The filter screen plate (61) has six second filter chambers (62) at its lower part, and the six second filter chambers (62) are on the same plane.

6. A medium-efficiency air filter with a circulating air duct filter according to any one of claims 1-5, characterized in that: The housing (1) is provided outside the filter guide tube (2). The lower end of the housing (1) is provided with a second limiting ring (10) for supporting the lower end of the filter guide tube (2). The middle part of the housing (1) is fixed with a first limiting ring (9) for supporting the upper end of the filter guide tube (2). A fan (7) is also installed in the middle part of the filter guide tube (2). The guide spiral plate (8) is installed below the fan (7) and is located in the inner ring of the primary filter (3). A connecting flange (15) is fixed on the outer surface of the upper end of the housing (1).

7. A medium-efficiency air filter with a circulating air duct filter according to claim 6, characterized in that: The inner ring of the primary filter (3) is conical, and the flow guide spiral plate (8) has a conical spiral structure.

8. A medium-efficiency air filter with a circulating air duct filter according to claim 6, characterized in that: The upper end of the housing (1) is fixed with two support rings (11), and the second filter (6) is installed between the two support rings (11).

9. A medium-efficiency air filter with a circulating air duct filter according to claim 8, characterized in that: A protective net (12) is installed on the upper end of the housing (1), and a magnetic column (13) is fixedly installed on the outer side of the protective net (12), and the magnetic column (13) is fixed to the support ring (11) by magnetic force.

10. A medium-efficiency air filter with a circulating air duct filter according to claim 9, characterized in that: A wind speed sensor (14) is installed on the protective net (12).

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