Axial flow fan with filtering function

Abstract

The present invention relates to the technical field of fan equipment, and in particular to an axial flow fan with a filtering function, comprising a housing, an axial flow fan and a filter layer; the housing is rotatably connected with the axial flow fan; the housing is fixed with a filter layer, and the filter layer is located on the left side of the axial flow fan. The present invention realizes that when there are many impurities adhering to the surface of the filter layer, by moving the scraper downward from the upper side of the filter layer, the impurities adhering to the filter layer are gradually scraped off by the scraper, and the filter layer is cleaned without stopping the machine. In the process of scraping the filter layer downward by the scraper, the area below the scraper is shielded by the baffle, and the air pump in the fixed box is controlled to suck, and the floating dust is sucked through the suction port, so that the floating dust can be sucked and adsorbed on the filter net of the suction port in time, and the floating dust is blocked by the baffle, which increases the difficulty of the floating dust escaping upward, and prevents the floating dust from re-attaching to the cleaned area of ​​the filter layer, thereby ensuring the cleaning effect of the filter layer.

Description

Technical Field

[0001] The invention relates to the technical field of fan equipment, and in particular to an axial flow fan with a filtering function. Background Art

[0002] Axial flow fans are fans in which the airflow is parallel to the fan axis. They are widely used in air conditioning, ventilation and other fields. In places with high dust content, in order to ensure that the blown airflow contains less dust and foreign matter, existing axial flow fans usually have a dust filter layer at the air inlet to filter the air.

[0003] However, after the filter layer has been used for a period of time, a lot of dust and other impurities will adhere to its surface. In order to ensure its filtering effect, it needs to be disassembled for cleaning and then installed and reset, which is extremely troublesome. In this process, the dust cannot be intercepted any more, resulting in the axial flow fan being unable to perform normal suction work. When the outside air contains a lot of water vapor, the dust impurities attached to the filter layer will stick together, thereby seriously affecting the airflow passing through the filter layer. Summary of the invention

[0004] In order to overcome the disadvantage that the filter layer of the existing axial flow fan needs to be disassembled for cleaning and then installed and reset after being used for a period of time, which is extremely troublesome and the axial flow fan cannot perform normal suction work during this process, the present invention provides an axial flow fan with filtering function.

[0005] The technical scheme is as follows: an axial flow fan with filtering function, comprising a housing, an axial flow fan and a filtering layer; the axial flow fan is rotatably connected in the housing; the filtering layer is fixed in the housing, and the filtering layer is located on the left side of the axial flow fan; it also comprises a baffle, a scraper, a guide frame, a collecting box, a fixing box, an intercepting plate, a diaphragm and a driving assembly; the housing is connected with a driving assembly; the driving assembly is connected with a baffle; the driving assembly is used to drive the baffle to move up and down; a scraper for cleaning dust is fixed on the baffle, and the scraper and the filter are connected with the filter. The left side of the filter layer is in contact; a debris discharge port is provided on the shell, and the debris discharge port is opposite to the scraper; a guide frame is connected to the lower side of the debris discharge port; a collection box for collecting dust is detachably connected to the guide frame, and the collection box is connected to the guide frame; a fixed box is fixed to the shell, and an air pump is arranged in the fixed box, and the air pump is connected to the baffle through an air pipe, and the baffle is hollow; a suction port is provided on the baffle; and a filter screen is arranged in the suction port; an interception plate is rotatably connected to the lower side of the baffle through a torsion spring; a diaphragm is rotatably connected to the suction port through a torsion spring.

[0006] Optionally, the right end of the interception plate is close to the left side of the filter layer.

[0007] Optionally, it includes a driving member and a sealing plate; a groove is opened on the shell, the groove is connected to the impurity discharge port, and a plurality of driving members are fixedly connected in the groove; a sealing plate is slidably connected in the groove, and the output ends of all driving members are fixedly connected to the sealing plate.

[0008] Optionally, a blocking piece is also included; a plurality of blocking pieces are fixedly connected in the guide frame, and the blocking pieces are all arranged to be inclined downward.

[0009] Optionally, the intercepting plate is inclined upward, and a temporary storage space is formed between the intercepting plate and the baffle.

[0010] Optionally, a scraper strip is provided on one side of the sealing plate close to the impurity discharge port.

[0011] Optionally, a vent is opened on the right side of the guide frame, and a blocking net is arranged on the vent.

[0012] Optionally, an airflow velocity sensor is provided on the shell, and the airflow velocity sensor is located on the right side of the axial flow fan.

[0013] Optionally, one end of the scraper that contacts the filter layer is covered with a rubber layer.

[0014] Optionally, a heating wire is provided on a side of the baffle close to the filter layer.

[0015] The beneficial effects are as follows: when there are many impurities adhering to the surface of the filter layer, the scraper is moved downward from the upper side of the filter layer, so that the impurities adhering to the filter layer are gradually scraped off by the scraper, so that the impurities scraped off by the scraper can fall downward to pass through the impurity discharge port and enter the guide frame to be stored, thereby realizing the cleaning of the filter layer without stopping the machine, and effectively ensuring the normal use of the present invention;

[0016] In the process of scraping the filter layer downwards by the scraper, in order to prevent the floating dust from being sucked and reattached to the cleaned area of ​​the filter layer, in the process of scraping the filter layer downwards by the scraper, the area below the scraper is shielded by the baffle, and the floating dust is blocked by the baffle, which increases the difficulty of the floating dust escaping upwards. In order to further intercept the floating dust, the air pump in the fixed box is controlled to suck, and the floating dust is sucked through the suction port, so that the floating dust can be sucked and adsorbed on the filter screen of the suction port in time, so as to prevent the floating dust from reattaching At the cleaned area of ​​the filter layer, the diaphragm is pulled to flip in the direction away from the filter screen, and the torsion spring is twisted, so that the air pump in the fixed box can stop suction intermittently, so that each time the suction stops, the diaphragm is rotated and reset in the direction close to the filter screen under the action of the torsion spring, so that the diaphragm hits the filter screen, and the floating dust attached to the filter screen is shaken off and temporarily stored above the interception plate, thereby preventing the filter screen in the suction port from being continuously attached with a lot of floating dust, effectively ensuring the suction force of the suction port, ensuring the attraction effect of floating dust, and ensuring the cleaning effect of the filter layer;

[0017] When the scraper moves to the lower side of the filter layer, the scraper bar scrapes the lower surface of the scraper to scrape the impurities adhered to the lower surface of the scraper into the guide frame. When the electric slider drives the baffle to reset upward, the scraper bar gradually scrapes the impurities adhered to the baffle. When the scraper bar contacts the interception plate, the interception plate is squeezed to adaptively rotate downward, and the torsion spring at the connection between the interception plate and the baffle is twisted. Then, the scraper bar scrapes the surface of the interception plate, thereby cleaning the baffle, scraper and interception plate, thereby avoiding the problem that when the filter layer is not cleaned by the baffle, scraper and interception plate in the future, the dust on the baffle, scraper and interception plate will be sucked by the axial flow fan again to the surface of the filter layer, thereby affecting the cleaning effect of the filter layer.

[0018] When the outside air contains more water vapor, the heating wire is controlled to heat up, so that the heat generated by the heating wire dries the dust adhered to the surface of the filter layer, thereby effectively ensuring the scraping and cleaning effect of the scraper on the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the axial flow fan with filtering function of the present invention;

[0020] Figure 2 is a cross-sectional view of a housing of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the baffle, scraper and fixing box combination of the present invention;

[0022] Figure 4 It is a schematic diagram of the combined three-dimensional structure of the baffle, scraper, slide rail and electric slide block of the present invention;

[0023] Figure 5 is a cross-sectional view of a baffle of the present invention;

[0024] Figure 6 is a cross-sectional view of a guide frame of the present invention;

[0025] Figure 7 This is a state diagram of the blocking plate of the present invention being closed.

[0026] In the figure: 1-shell, 1001-exhaust port, 1002-groove, 2-axial flow fan, 3-filter layer, 4-baffle, 4001-suction port, 4002-heating wire, 5-scraper, 6-guide frame, 6001-vent, 7-collecting box, 8-fixed box, 101-slide rail, 102-electric slider, 201-driving member, 202-sealing plate, 20201-scraper strip, 301-baffle, 401-interception plate, 402-diaphragm. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0028] Example 1

[0029] An axial flow fan with filtering function, such as Figure 1-Figure 7 As shown, it includes a housing 1, an axial flow fan 2 and a filter layer 3; the axial flow fan 2 is rotatably connected in the housing 1; the left side of the housing 1 is an air inlet, and the right side is an air outlet; the filter layer 3 is bolted to the left side of the housing 1, and the filter layer 3 is located on the left side of the axial flow fan 2;

[0030] It also includes a baffle 4, a scraper 5, a guide frame 6, a collecting box 7, a fixed box 8, an intercepting plate 401, a diaphragm 402 and a driving component; the shell 1 is connected to the driving component; the baffle 4 is connected to the driving component; the scraper 5 is fixedly connected to the baffle 4, and the scraper 5 is in contact with the left side of the filtering layer 3; the shell 1 is provided with a debris discharge port 1001, and the debris discharge port 1001 is directly opposite to the scraper 5; the lower side of the debris discharge port 1001 is connected to the guide frame 6; the lower side of the guide frame 6 is detachably connected to the collecting box 7, and the collecting box 7 is connected to the guide frame 6; the shell 1 is fixed with a fixed box 8, and an air pump is arranged in the fixed box 8, and the air pump is connected to the baffle 4 through an air pipe, and the baffle 4 is hollow; the baffle 4 is provided with a suction port 4001; and a filter is arranged in the suction port 4001; the lower side of the baffle 4 is rotatably connected to the intercepting plate 401 through a torsion spring; the suction port 4001 is rotatably connected to the diaphragm 402 through a torsion spring.

[0031] The right end of the interception plate 401 is close to the left side of the filter layer 3.

[0032] The driving assembly includes a slide rail 101 and an electric slider 102 ; two slide rails 101 are bolted together in the housing 1 , and an electric slider 102 is slidably connected to each slide rail 101 ; the two electric sliders 102 are fixedly connected to the baffle 4 .

[0033] It includes a driving member 201 and a sealing plate 202; a groove 1002 is opened on the shell 1, the groove 1002 is connected to the impurity discharge port 1001, two driving members 201 are fixedly connected in the groove 1002, and the driving member 201 is an electric push rod; a sealing plate 202 is slidably connected in the groove 1002, and the output ends of all driving members 201 are fixedly connected to the sealing plate 202.

[0034] It also includes a blocking piece 301; two blocking pieces 301 arranged in a staggered manner are fixedly connected to the guide frame 6, and the blocking pieces 301 are arranged to be inclined downward.

[0035] The intercepting plate 401 is tilted upward, and a temporary storage space is formed between the intercepting plate 401 and the baffle 4 .

[0036] A scraper strip 20201 is provided on one side of the blocking plate 202 close to the impurity discharge port 1001 .

[0037] A vent 6001 is provided on the right side of the guide frame 6 , and a blocking net is provided on the vent 6001 .

[0038] An air flow velocity sensor is provided on the housing 1 and is located on the right side of the axial flow fan 2 .

[0039] One end of the scraper 5 that contacts the filter layer 3 is covered with a rubber layer to prevent the scraper 5 from damaging the filter layer 3 when scraping the surface of the filter layer 3 .

[0040] During operation, the right side of the shell 1 is connected to the ventilation duct, and the motor of the axial flow fan 2 is controlled to drive the axial flow fan 2 to rotate. The outside air is sucked into the shell 1 from the left opening of the shell 1 through the suction force generated by the axial flow fan 2, so that the air passes through the filter layer 3 and enters the ventilation duct. The dust and other dirt in the air are intercepted and filtered through the filter layer 3. However, after a period of use, a lot of dust and other impurities will adhere to the left surface of the filter layer 3. In order to ensure its filtering effect, the prior art needs to disassemble it for cleaning and then install it again, which is extremely troublesome. In addition, the axial flow fan 2 cannot perform suction work during this process. In the present invention, when the airflow velocity sensor on the shell 1 detects that the airflow passing through The air flow velocity of the filter layer 3 is significantly reduced, that is, when there are more impurities adhered to the left surface of the filter layer 3, the electric slider 102 is controlled to drive the baffle 4 to slide on the slide rail 101, and the baffle 4 is used to drive the scraper 5 to move downward from the upper side of the filter layer 3, so that the impurities attached to the filter layer 3 are gradually scraped off by the scraper 5, and the initial blocking plate 202 is located in the groove 1002, and the blocking plate 202 does not block the impurity discharge port 1001, so that the impurities scraped off by the scraper 5 can fall downward to pass through the impurity discharge port 1001 and enter the guide frame 6, and then fall downward from the guide frame 6 into the collection box 7 for storage, thereby realizing the cleaning of the filter layer 3 without stopping the machine, and effectively ensuring the normal use of the present invention.

[0041] Furthermore, in the process of scraping the filter layer 3 downwards by the scraper 5, since the filter layer 3 is cleaned without stopping the machine, the filter layer 3 located above the scraper 5 is the cleaned area, and the filter layer 3 located below the scraper 5 is the uncleaned area. Under the scraping of the scraper 5, the dust impurities on the filter layer 3 are continuously scraped off and fall downwards. Since there is a situation in which some lighter dust escapes to the surroundings, and the cleaned area has a large air flow due to dredging, the floating dust is easily sucked to the cleaned area of ​​the filter layer 3 and re-attached to it, affecting the cleaning effect. In order to avoid this situation, in the process of the scraper 5 scraping the filter layer 3 downwards, the baffle 4 is used to shield the area below the scraper 5, and the baffle 4 is used to block the floating dust, thereby increasing the difficulty of the floating dust escaping upwards and reducing the floating dust re-adsorbed onto the filter layer 3, which is beneficial to ensuring the cleaning effect of the filter layer 3.

[0042] By arranging an interception plate 401 on the baffle 4, the interception plate 401 is close to the left side of the filter layer 3, so that an interception space is formed between the baffle 4, the scraper 5 and the interception plate 401, which effectively reduces the escape of floating dust through the lower side of the baffle 4, strengthens the blocking effect of floating dust, and further increases the difficulty of floating dust escaping upward.

[0043] In order to further ensure the interception effect of floating dust and the cleaning effect of the filter layer 3, the air pump in the fixed box 8 is controlled to suction. The suction force provided by the air pump sucks the floating dust through the suction port 4001, so that the floating dust can be sucked and adsorbed on the filter net of the suction port 4001 in time, further preventing the floating dust from re-attaching to the cleaned area of ​​the filter layer 3.

[0044] At the same time Figure 5 As shown, the suction force provided by the air pump will cause the diaphragm 402 to be pulled to flip in the direction away from the filter screen of the suction port 4001, and the torsion spring at the connection between the diaphragm 402 and the baffle 4 is twisted. When the air pump in the fixed box 8 performs suction, the air pump in the fixed box 8 is controlled to perform intermittent suction, so that each time the air pump stops suction, the diaphragm 402 is rotated and reset in the direction close to the filter screen under the action of the torsion spring, thereby hitting the filter screen through the diaphragm 402, and the interception plate 401 is arranged to be tilted upward, and a temporary storage space is formed between the interception plate 401 and the baffle 4, so that the floating dust attached to the filter screen is shaken off and temporarily stored above the interception plate 401, thereby avoiding the filter screen in the suction port 4001 from being continuously attached with a lot of floating dust, effectively ensuring the suction force of the suction port 4001, ensuring the attraction effect on floating dust, and ensuring the cleaning effect on the filter layer 3.

[0045] Further, when the scraper 5 moves to the lower side of the filter layer 3, the baffle 4 also passes through the impurity discharge port 1001 and enters the guide frame 6. At this time, the air pump in the fixed box 8 can be controlled to blow air to the baffle 4, so that air is blown to the right through the suction port 4001, and then the air flow in the guide frame 6 flows outward from the vent 6001, so that the impurities falling into the guide frame 6 are blown and guided by the air flow, so that the impurities enter the collection box 7 along the inclined surface of the baffle 301. Then, the filter layer 3 continues to be cleaned. When leaving the guide frame 6, the impurities in the collection box 7 can be blocked and separated by the blocking piece 301, so as to increase the difficulty of the impurities in the collection box 7 being sucked out from the impurity discharge port 1001 by the suction force generated by the axial flow fan 2, that is, to prevent the impurities in the collection box 7 from being adsorbed onto the filter layer 3. At the same time, the driving member 201 can be controlled to push the blocking plate 202 to the left, and the impurity discharge port 1001 can be blocked by the blocking plate 202, so as to further increase the difficulty of the impurities in the collection box 7 being sucked out.

[0046] It should be noted that the collecting box 7 and the guide frame 6 are detachable. When the impurities collected in the collecting box 7 need to be cleaned, the collecting box 7 is manually removed from the guide frame 6, and after the impurities in the collecting box 7 are cleaned, the collecting box 7 is reinstalled on the guide frame 6.

[0047] Furthermore, during the cleaning process of the filter layer 3 by the baffle plate 4 and the scraper plate 5, dust adheres to the baffle plate 4 and the scraper plate 5, and the upper side of the interception plate 401 carries floating dust, so when the scraper plate 5 moves to the lower side of the filter layer 3, Figure 6 As shown, the driving member 201 pushes the blocking plate 202 to the left to block the impurity discharge port 1001. At this time, the scraper bar 20201 scrapes the lower surface of the scraper 5 to scrape the impurities adhered to the lower surface of the scraper 5 into the guide frame 6. When the electric slider 102 drives the baffle 4 to reset upward, the baffle 4 and the scraper bar 20201 slide relative to each other, so that the scraper bar 20201 gradually scrapes off the impurities adhered to the baffle 4, and when the scraper bar 20201 contacts the intercepting plate 401, the intercepting plate 401 is It is squeezed until it adaptively rotates downward, and the torsion spring at the connection between the interception plate 401 and the baffle 4 is twisted, and then the scraper bar 20201 is used to scrape the surface of the interception plate 401, so as to clean the baffle 4, the scraper 5 and the interception plate 401, thereby avoiding the problem that when the baffle 4, the scraper 5 and the interception plate 401 are not used to clean the filter layer 3 in the future, the dust on the baffle 4, the scraper 5 and the interception plate 401 will be sucked by the axial flow fan 2 again to adhere to the surface of the filter layer 3, thereby affecting the cleaning effect of the filter layer 3.

[0048] Example 2

[0049] On the basis of Example 1, Figure 3 and Figure 4 As shown, a heating wire 4002 is provided on one side of the baffle 4 close to the filter layer 3 .

[0050] When there is more water vapor in the outside air, the dust impurities attached to the filter layer 3 will be bonded, which will seriously affect the airflow passing through the filter layer 3. At the same time, it will increase the difficulty of scraping and cleaning the filter layer 3 by the scraper 5. Therefore, in the process of the electric slider 102 driving the baffle 4 and the scraper 5 to move downward, the heating wire 4002 is controlled to heat. It should be noted that the electric slider 102 drives the baffle 4 and the scraper 5 to move downward slowly, so that the heat generated by the heating wire 4002 can dry the dust adhered to the surface of the filter layer 3, thereby effectively ensuring the scraping and cleaning effect of the scraper 5 on the filter layer 3.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An axial flow fan with a filtering function, comprising a housing (1), an axial flow fan (2) and a filter layer (3); the housing (1) is rotatably connected to the axial flow fan (2); the housing (1) is fixedly connected to the filter layer (3), and the filter layer (3) is located on the left side of the axial flow fan (2); the characteristics are: The invention also comprises a baffle (4), a scraper (5), a guide frame (6), a collection box (7), a fixing box (8), an intercepting plate (401), a diaphragm (402) and a driving assembly; the housing (1) is connected to the driving assembly; the baffle (4) is connected to the driving assembly; the driving assembly is used to drive the baffle (4) to move up and down; the baffle (4) is fixedly connected to a scraper (5) for cleaning dust, the scraper (5) being in contact with the left side of the filter layer (3); the housing (1) is provided with a dust discharge port (1001), the dust discharge port (1001) being directly opposite to the scraper (5); the lower side of the dust discharge port (1001) is provided with a dust discharge port (1001). A guide frame (6) is connected; a collection box (7) for collecting dust is detachably connected to the guide frame (6), and the collection box (7) is connected to the guide frame (6); a fixing box (8) is fixedly connected to the housing (1), an air pump is arranged in the fixing box (8), and the air pump is connected to the baffle (4) through an air pipe, and the baffle (4) is hollow; a suction port (4001) is opened on the baffle (4); and a filter is arranged in the suction port (4001); an interception plate (401) is rotatably connected to the lower side of the baffle (4) through a torsion spring; and a diaphragm (402) is rotatably connected to the suction port (4001) through a torsion spring.

2. The axial flow fan with filtering function according to claim 1, characterized in that: The right end of the interception plate (401) is close to the left side of the filter layer (3).

3. The axial flow fan with filtering function according to claim 1, characterized in that: The invention comprises a driving member (201) and a sealing plate (202); a housing (1) is provided with a groove (1002), the groove (1002) is communicated with the impurity discharge port (1001), a plurality of driving members (201) are fixedly connected in the groove (1002); a sealing plate (202) is slidably connected in the groove (1002), and the output ends of all driving members (201) are fixedly connected to the sealing plate (202).

4. The axial flow fan with filtering function according to claim 1, characterized in that: It also includes a baffle (301); a plurality of baffles (301) are fixedly connected inside the guide frame (6), and the baffles (301) are all arranged to be inclined downward.

5. The axial flow fan with filtering function according to claim 1, characterized in that: The interception plate (401) is inclined upward, and a temporary storage space is formed between the interception plate (401) and the baffle plate (4).

6. The axial flow fan with filtering function according to claim 3, characterized in that: A scraper strip (20201) is provided on one side of the sealing plate (202) close to the impurity discharge port (1001).

7. The axial flow fan with filtering function according to claim 1, characterized in that: A vent (6001) is provided on the right side of the guide frame (6), and a blocking net is provided on the vent (6001).

8. The axial flow fan with filtering function according to claim 1, characterized in that: An air flow velocity sensor is provided on the housing (1), and the air flow velocity sensor is located on the right side of the axial flow fan (2).

9. The axial flow fan with filtering function according to claim 1, characterized in that: One end of the scraper (5) in contact with the filter layer (3) is covered with a rubber layer.

10. The axial flow fan with filtering function according to claim 1, characterized in that: A heating wire (4002) is provided on a side of the baffle (4) close to the filter layer (3).

Images