Circulating air duct filter screen and medium-efficiency air filter

Abstract

The invention discloses a circulating air duct filter screen and a medium-efficiency air filter, and relates to the technical field of filters, the circulating air duct filter screen comprises a filter screen flow guide pipe used for circulating flow guide and a primary filter screen installed in the filter screen flow guide pipe and used for primarily filtering air, and a magnetic attraction positioning piece used for connection is arranged between the filter screen flow guide pipe and the primary filter screen. A primary filter cavity is formed in the inner side of the primary filter screen, a first rubber plate is bonded to the inner side of the primary filter screen, and the first rubber plate covers the air inlet end of the primary filter cavity; a primary filter screen is arranged in a filter screen flow guide pipe, a primary filter cavity is formed in the inner side of the primary filter screen, and a first rubber plate bonded to the inner side of the primary filter screen is located at the air inlet end of the primary filter cavity, so that when air moves upwards in the primary filter screen, a flow guide spiral plate guides the upward air, and the air rotates when moving upwards; and dust in the air moves towards the periphery in the primary filter screen under the action of centrifugal force.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a circulating air duct filter screen and a medium-efficiency air filter. Background Art

[0002] Air filter refers to air filtering device, which is generally used in clean workshops, clean factories, laboratories and clean rooms, or for dust prevention of electronic machinery and communication equipment. There are primary filter, medium filter, high efficiency filter and sub-high efficiency filter. Different models have different standards and performance.

[0003] The filter is the core component of the air filter. When the filter filters the air, it is difficult to circulate and filter the dust. At the same time, when the dust accumulates on the side of the filter, it is easy to cause the filter to be blocked. When the filter is blocked, the filtering effect of the filter is poor. At the same time, the blocked dust is easy to fall due to the air at the end of the filter, causing the dust to pollute the environment outside the filter. Summary of the invention

[0004] The present invention aims at the deficiencies of the prior art and provides the following technical solutions: a circulating air duct filter, comprising a filter guide pipe for circulating flow diversion, and a primary filter installed in the filter guide pipe for preliminary air filtration, a magnetic positioning member for connection is arranged between the filter guide pipe and the primary filter, a primary filter cavity is arranged on the inner side of the primary filter, a first rubber sheet is bonded to the inner side of the primary filter, and the first rubber sheet covers the air inlet end of the primary filter cavity, a first air permeable groove is provided in the primary filter cavity away from the air inlet end, a second filter is arranged above the filter guide pipe, and a guide spiral plate is arranged in the middle of the primary filter;

[0005] The second filter screen includes a filter screen plate, a second filter cavity is arranged at the lower part of the filter screen plate, a second rubber plate is bonded to the lower end of the filter screen plate, and the second rubber plate covers the lower part of the second filter cavity, a second air permeable groove is opened at the top of the second filter cavity, and a nano silver sponge filter screen, a silver ion antibacterial filter screen and an outer non-woven fabric filter screen are bonded in sequence on the upper surface of the filter screen plate.

[0006] As an improvement of the above technical solution, the magnetic positioning member 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 magnet rings are bonded in the grooves of the primary filter and the support platform, and the magnetic poles of the two magnet rings on opposite sides are opposite.

[0007] As an improvement of the above technical solution, the filter guide pipe includes a circular tube in the middle, a circular ring with a U-shaped cross-section arranged at the lower end of the circular tube, and a trumpet tube arranged at the upper end of the circular tube.

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

[0009] As an improvement of the above technical solution, six second filter cavities are arranged at the lower part of the filter screen plate, and the six second filter cavities are in the same plane.

[0010] A medium-efficiency air filter for a circulating air duct filter comprises a shell arranged outside a filter guide tube, a second limiting ring for supporting the lower end of the filter guide tube is arranged at the lower end of the shell, a first limiting ring for supporting the upper end of the filter guide tube is fixed to the middle of the shell, a fan is also installed in the middle of the filter guide tube, the guide spiral plate is installed at the lower part of the fan, and the guide spiral plate is located at the inner circle of the primary filter, and a connecting flange is fixed to the outer surface of the upper end of the shell.

[0011] As an improvement of the above technical solution, the inner circle of the primary filter is conical, and the guide spiral plate is a conical spiral structure.

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

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

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

[0015] Beneficial effects of the present invention:

[0016] 1. A primary filter is arranged in the filter guide tube, and a primary filter cavity is arranged inside the primary filter. The first rubber plate bonded to the inside of the primary filter is located at the air inlet end of the primary filter cavity. When the air moves upward in the primary filter, the guide spiral plate guides the upward air, so that the air rotates upward, and the dust in the air moves around in the primary filter under the action of centrifugal force, so that a large amount of dust pushes the first rubber plate and enters the primary filter cavity, so that the air passes through the primary filter and enters the filter guide tube, and the air in the filter guide tube moves upward after circulation and guidance, so that the purpose of preliminary dust removal is achieved after the air is circulated and filtered, and the first rubber plate is arranged at the air inlet end of the primary filter cavity to achieve the purpose of one-way air intake, so that the dust stops The second filter screen is arranged above the filter guide tube, so that the second filter screen performs secondary filtration on the air, and the second filter screen is composed of a filter screen plate, a second filter chamber, a second rubber plate, a second air permeability groove, a nano silver sponge filter screen, a silver ion antibacterial filter screen and an outer non-woven filter screen. When the air through the preliminary filtration moves upward, the second rubber plate is pushed open and enters the second filter chamber, and the air entering the second filter chamber passes through the filter screen plate, is filtered, and then passes through the nano silver sponge filter screen, the silver ion antibacterial filter screen and the outer non-woven filter screen for secondary filtration, thereby improving the air filtration effect and increasing the cleanliness of the air. The second rubber plate is arranged at the air inlet end of the second filter chamber to realize the purpose of one-way air intake, so that the dust stays in the second filter chamber.

[0017] 2. Through the magnetic positioning piece composed of a support platform and a magnet ring, the support platform is bonded to the inner surface of the upper end of the filter guide tube, and the magnet ring is bonded to the lower surface of the support platform and the groove opened on the upper end of the primary filter, so that the primary filter is installed in the filter guide tube and then fixed by the magnetic positioning piece, which increases the stability of the primary filter installed inside the filter guide tube.

[0018] 3. Through the filter guide tube arranged outside the filter guide tube, the second limiting ring arranged at the lower end of the shell and the first limiting ring fixed in the middle of the shell, it is convenient for the first limiting ring to support the upper end of the filter guide tube, and the second limiting ring to support the lower end of the filter guide tube, thereby increasing the stability of the filter guide tube installed inside the shell, and a fan is installed in the middle of the filter guide tube, which facilitates the air outside the shell to enter under the action of the fan, and then facilitates the air entering the primary filter to rotate under the action of the guide spiral plate, so that the air containing more dust enters the primary filter cavity when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0022] Figure 4 It is a cross-sectional structural diagram of the present invention;

[0023] Figure 5 for Figure 3 The enlarged structure diagram at A in the middle;

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

[0025] Figure numerals: 1. Shell; 2. Filter guide tube; 3. Primary filter; 31. Primary filter chamber; 32. First rubber plate; 33. First air permeable groove; 4. Support platform; 5. Magnet ring; 6. Second filter; 61. Filter plate; 62. Second filter chamber; 63. Second rubber plate; 64. Second air permeable groove; 65. Nano silver sponge filter; 66. Silver ion antibacterial filter; 67. Outer non-woven 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 DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] See also Figure 1-6 The present invention provides a technical solution: a circulating air duct filter, comprising a filter guide pipe 2 for circulating flow diversion, and a primary filter 3 for preliminary air filtration installed in the filter guide pipe 2, a magnetic positioning member for connection is arranged between the filter guide pipe 2 and the primary filter 3, a primary filter cavity 31 is arranged on the inner side of the primary filter 3, a first rubber sheet 32 ​​is bonded to the inner side of the primary filter 3, and the first rubber sheet 32 ​​covers the air inlet end of the primary filter cavity 31, and the primary filter cavity 31 is provided with a first air permeable groove 33 away from the air inlet end, a second filter 6 is arranged above the filter guide pipe 2, and a guide spiral plate 8 is arranged in the middle of the primary filter 3;

[0028] The second filter 6 includes a filter screen plate 61, a second filter cavity 62 is arranged at the lower part of the filter screen plate 61, a second rubber sheet 63 is bonded to the lower end of the filter screen plate 61, and the second rubber sheet 63 covers the lower part of the second filter cavity 62, a second air permeable groove 64 is opened at the top of the second filter cavity 62, and a nano silver sponge filter screen 65, a silver ion antibacterial filter screen 66 and an outer non-woven fabric filter screen 67 are bonded to the upper surface of the filter screen plate 61 in sequence.

[0029] Nano silver sponge filter 65, the sponge raw material is added with nano silver antibacterial masterbatch during the high temperature melting process, and the nano silver sponge filter is processed by a unique process, which can provide a long-lasting, stable and safe antibacterial filter.

[0030] Silver ion antibacterial filter 66

[0031] In this embodiment, a primary filter screen 3 is arranged in the filter guide tube 2, and a primary filter cavity 31 is arranged inside the primary filter screen 3, and a first rubber plate 32 bonded to the inside of the primary filter screen 3 is located at the air inlet end of the primary filter cavity 31. When the air moves upward in the primary filter screen 3, the guide spiral plate 8 guides the upward air, so that the air rotates when it moves upward, and the dust in the air moves around in the primary filter screen 3 under the action of centrifugal force, so that a large amount of dust pushes the first rubber plate 32 and enters the primary filter cavity 31, so that the air passes through the primary filter screen 3 and enters the filter guide tube 2, and the air in the filter guide tube 2 moves upward after circulating and guiding, so that the purpose of preliminary dust removal is achieved after the air is circulated and filtered, and the first rubber plate 32 is arranged at the air inlet end of the primary filter cavity 31 to achieve the purpose of one-way air intake, so that the dust stays in the primary filter. The interior of the filter cavity 31, and the second filter 6 arranged above the filter guide tube 2, enables the second filter 6 to perform secondary filtration on the air, and the second filter 6 is composed of a filter screen plate 61, a second filter cavity 62, a second rubber plate 63, a second air permeable groove 64, a nano silver sponge filter 65, a silver ion antibacterial filter 66 and an outer non-woven filter 67. When the air that has been initially filtered moves upward, the second rubber plate 63 is pushed open to enter the second filter cavity 62, and the air entering the second filter cavity 62 passes through the filter screen 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 filter 67 for secondary filtration, thereby improving the air filtration effect and increasing the cleanliness of the air, and the second rubber plate 63 is arranged at the air inlet end of the second filter cavity 62 to achieve the purpose of one-way air intake, so that the dust stays inside the second filter cavity 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, and magnet rings 5 ​​are bonded in the grooves provided in the primary filter 3 and the support platform 4, and the magnetic poles of the two magnet rings 5 ​​facing each other are opposite, and the filter guide tube 2 includes a circular tube in the middle, a circular ring with a U-shaped cross-section arranged at the lower end of the circular tube, and a trumpet tube arranged at the upper end of the circular tube.

[0033] In this embodiment, a magnetic positioning member composed of a support platform 4 and a magnet ring 5 is used, and the support platform 4 is bonded to the inner surface of the upper end of the filter guide tube 2, and the magnet 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, so that the primary filter 3 is installed in the filter guide tube 2 and then fixed by the magnetic positioning member, thereby increasing the stability of the primary filter 3 installed inside the filter guide tube 2.

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

[0035] In this embodiment, the three primary filter chambers 31 are convenient for storing the filtered dust in sections.

[0036] Specifically, six second filter cavities 62 are provided at the lower part of the filter screen plate 61, and the six second filter cavities 62 are in the same plane.

[0037] In this embodiment, the six second filter chambers 62 are used to store the filtered dust in sections.

[0038] A medium-efficiency air filter for a circulating air duct filter comprises a shell 1 arranged outside a filter guide tube 2, a second limit ring 10 for supporting the lower end of the filter guide tube 2 is arranged at the lower end of the shell 1, a first limit ring 9 for supporting the upper end of the filter guide tube 2 is fixed to the middle of the shell 1, a fan 7 is also installed in the middle of the filter guide tube 2, a guide spiral plate 8 is installed at the lower part of the fan 7, and the guide spiral plate 8 is located at the inner circle of the primary filter 3, and a connecting flange 15 is fixed to the outer surface of the upper end of the shell 1.

[0039] In this embodiment, the filter guide tube 2 is arranged outside the filter guide tube 2, and the second limiting ring 10 is arranged at the lower end of the shell 1 and the first limiting ring 9 is fixed in the middle of the shell 1, so that the first limiting ring 9 supports the upper end of the filter guide tube 2, and the second limiting ring 10 supports the lower end of the filter guide tube 2, which increases the stability of the filter guide tube 2 installed inside the shell 1, and the fan 7 is installed in the middle of the filter guide tube 2, so that the air outside the shell 1 can enter under the action of the fan 7, and then the air entering the primary filter 3 can rotate 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 circle of the primary filter screen 3 is conical, and the guide spiral plate 8 is a conical spiral structure.

[0041] In this embodiment, the guide spiral plate 8 with a conical spiral structure is convenient for guiding the air.

[0042] Specifically, two support rings 11 are fixed to 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 are convenient for supporting the second filter screen 6 .

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

[0045] In this embodiment, the magnet column 13 and the support ring 11 are fixed by magnetic force, so that the protection net 12 protects the second filter screen 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 convenient for transmitting air.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A circulating air duct filter, characterized in that: The invention comprises a filter guide pipe (2) for circulating flow diversion, and a primary filter (3) installed in the filter guide pipe (2) for preliminary air filtration, a magnetic positioning member for connection is arranged between the filter guide pipe (2) and the primary filter (3), a primary filter cavity (31) is arranged on the inner side of the primary filter (3), a first rubber plate (32) is bonded on the inner side of the primary filter (3), and the first rubber plate (32) covers the air inlet end of the primary filter cavity (31), a first air permeable groove (33) is provided on the primary filter cavity (31) away from the air inlet end, a second filter (6) is arranged above the filter guide pipe (2), and a guide spiral plate (8) is arranged in the middle of the primary filter (3); The second filter screen (6) comprises a filter screen plate (61), a second filter cavity (62) is arranged at the lower part of the filter screen plate (61), a second rubber plate (63) is bonded to the lower end of the filter screen plate (61), and the second rubber plate (63) covers the lower part of the second filter cavity (62), a second air permeable groove (64) is opened at the top of the second filter cavity (62), and a nano silver sponge filter screen (65), a silver ion antibacterial filter screen (66) and an outer non-woven filter screen (67) are bonded to the upper surface of the filter screen plate (61) in sequence.

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

3. A circulating air duct filter according to claim 2, characterized in that: The filter screen flow guide pipe (2) comprises a circular tube in the middle, a circular ring with a U-shaped cross section arranged at the lower end of the circular tube, and a trumpet tube arranged at the upper end of the circular tube.

4. The circulating air duct filter according to claim 1, characterized in that: Three primary filter cavities (31) are vertically arranged inside the primary filter screen (3).

5. The circulating air duct filter according to claim 1, characterized in that: There are six second filter cavities (62) arranged at the lower part of the filter screen plate (61), and the six second filter cavities (62) are located in the same plane.

6. A medium efficiency air filter for a circulating air duct filter according to any one of claims 1 to 5, characterized in that: The invention comprises a shell (1) arranged outside a filter screen flow guide pipe (2), a second limit ring (10) for supporting the lower end of the filter screen flow guide pipe (2) being arranged at the lower end of the shell (1), a first limit ring (9) for supporting the upper end of the filter screen flow guide pipe (2) being fixed at the middle of the shell (1), a fan (7) being also installed at the middle of the filter screen flow guide pipe (2), a guide spiral plate (8) being installed at the lower part of the fan (7), and the guide spiral plate (8) being located at the inner circle of the primary filter screen (3), and a connecting flange (15) being fixed to the outer surface of the upper end of the shell (1).

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

8. The medium efficiency air filter of the circulating air duct filter screen according to claim 6, characterized in that: Two support rings (11) are fixed to the upper end of the shell (1), and the second filter screen (6) is installed between the two support rings (11).

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

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

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