Primary filtering device and magnetic suspension blower equipment

Abstract

The primary filtering device comprises an outer ring, connecting plates, a shaft seat, a rotating shaft and a filtering disc, the shaft seat is installed in the center of the outer ring through a plurality of connecting plates, the rotating shaft is rotatably installed in the shaft seat, the filtering disc is installed at one end of the rotating shaft, and the other end of the rotating shaft is in transmission connection with a driver to rotate. An outer cover shell and an inner cover shell are oppositely arranged at the two ends of the outer ring respectively, a dust collecting cavity is formed between the outer cover shell and the filter disc, an air pressure cavity is formed between the inner cover shell and the filter disc, and the filter disc is partially located between the dust collecting cavity and the air pressure cavity. The filter disc is driven by the driver to rotate, and a part of the filter disc is located between the dust collecting cavity and the air pressure cavity, so that after pressure air is introduced into the air pressure cavity, the filter disc is reversely blown, dust on the filter disc is separated and then enters the dust collecting cavity to be collected, and the filter disc can be cleaned in a non-stop state.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration and magnetic suspension blower equipment, in particular to a primary filtration device and magnetic suspension blower equipment. Background Art

[0002] The furnaces in our company's production line use magnetic levitation blower equipment for air supply. The structure of the magnetic levitation blower equipment is roughly the same as the magnetic levitation blower structure disclosed in CN221762278U. Figure 1 The figure shows the air inlet of an existing magnetic levitation blower. Due to the high dust content of the production line, dust accumulates in the primary filter after the blower has been operating for a period of time, causing clogging and affecting the air intake. Therefore, the primary filter needs to be regularly removed and dust-purged. However, the removal and installation of the existing primary filter requires the removal and installation of multiple bolts, making dust removal inconvenient.

[0003] In order to solve this problem, Chinese patent document CN115596715A, published (announcement) date: 2023.01.13, discloses a magnetic levitation blower, in which filter cotton is arranged on the mounting frame, and the lower end of the mounting frame is better fixed to the blower body through the coordinated use of limit grooves and limit strips, and the upper end of the mounting frame can be better fixed to the blower body through the fixing device, which greatly improves the disassembly and installation efficiency of the mounting frame. However, its disadvantage is that: when replacing the filter cotton, the magnetic levitation blower needs to be shut down for operation, which will affect production. Utility Model Content

[0004] The purpose of the utility model is to provide a primary filtering device, in which the filter disc is rotated by a driver, and since a part of the filter disc is located between the dust collecting chamber and the air pressure chamber, when pressurized air is introduced into the air pressure chamber, the filter disc is backblown, so that the dust on the filter disc is separated and enters the dust collecting chamber for collection, so that the filter disc can be cleaned without stopping the machine.

[0005] Another object of the present invention is to provide a magnetic suspension blower device using a primary filtering device.

[0006] To achieve the above-mentioned purpose, the utility model provides a primary filtering device, including an outer ring, a connecting plate, a shaft seat, a rotating shaft and a filter disc. The center of the outer ring is equipped with a shaft seat through multiple connecting plates, and a rotating shaft is installed rotatingly in the shaft seat. The filter disc is installed at one end of the rotating shaft, and the other end is connected to the driver for rotation. The two ends of the outer ring are respectively provided with an outer cover shell and an inner cover shell. A dust collection chamber is formed between the outer cover shell and the filter disc, and an air pressure chamber is formed between the inner cover shell and the filter disc. The filter disc is partially located between the dust collection chamber and the air pressure chamber; pressurized air is passed into the air pressure chamber.

[0007] The filter disc includes an outer ring, an inner support net, filter cotton and an outer support net. The inner support net and the outer support net are fixedly installed at the inner ends of the outer ring respectively. The filter cotton is located between the inner support net and the outer support net. The rotating shaft is connected and fixed to the inner support net.

[0008] One end of the rotating shaft connected to the filter disc is provided with a fixing plate.

[0009] An outer flange and an inner flange are respectively provided inside the outer ring and on both sides of the filter disc, and the edge of the filter disc is located between the outer flange and the inner flange.

[0010] A driven pulley is installed at the other end of the rotating shaft, and a driving pulley is installed on the output shaft of the driver. The driven pulley and the driving pulley are connected and driven by a belt.

[0011] An air pipe is installed in the air pressure cavity, one end of the air pipe is closed, and the other end extends out of the air pressure cavity. A plurality of air blowing nozzles are installed on the air pipe on the side facing the filter disc.

[0012] The dust collecting chamber is provided with a negative pressure dust suction interface.

[0013] A magnetic levitation blower device comprises a box body, and the air inlet of the box body is installed with the primary filtering device described above.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] The dust collection chamber and the air pressure chamber in this utility model separate the filter disc. The portion of the filter disc located between the dust collection chamber and the air pressure chamber is used for backflushing to clean dust on the filter disc, while the portion located outside the dust collection chamber and the air pressure chamber is used for preliminary filtration of the intake air of the magnetic levitation blower. The filter disc is driven by a driver to rotate. When pressurized air is introduced into the air pressure chamber, the filter disc is backflushed, removing dust from the filter disc and collecting it in the dust collection chamber. This allows the filter disc to be cleaned without stopping the machine, thus not affecting production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description:

[0017] Figure 1 This is a structural diagram of the air inlet of an existing magnetic levitation blower device;

[0018] Figure 2 This is a structural diagram of the utility model in which the primary filtering device is installed at the air inlet of the magnetic levitation blower equipment;

[0019] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0020] Figure 4 for Figure 3 The enlarged structural diagram at C in the middle;

[0021] Figure 5 for Figure 3 The enlarged structural diagram at D in the middle;

[0022] Figure 6 for Figure 2 Schematic diagram of the BB cross-section structure;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the primary filtering device of the utility model;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the primary filtering device of the present invention from another perspective;

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of the primary filter device of the utility model when the outer ring and the filter disc are disassembled;

[0026] Figure 10 This is a schematic diagram of the three-dimensional structure of the primary filter device of the utility model when the outer ring and the filter disc are disassembled from another perspective;

[0027] Figure 11 This is a schematic diagram of the structure of the air pipe installed inside the primary filtering device of the utility model.

[0028] Reference numerals:

[0029] Primary filtering device 100, housing 200;

[0030] Outer ring 110, outer flange 111, inner flange 112;

[0031] Connecting plate 120;

[0032] Axle seat 130, bearing 131;

[0033] Rotating shaft 140, fixed plate 141, driven pulley 142;

[0034] Filter disc 150, outer ring 151, inner support net 152, filter cotton 153, outer support net 154;

[0035] Driver 160, driving pulley 161, belt 162;

[0036] Outer cover 170, dust collection chamber 171, negative pressure dust collection interface 172;

[0037] Inner housing 180, air pressure chamber 181;

[0038] Trachea 190, blowing nozzle 191. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] Example 1:

[0041] See Figure 2-10 A primary filtering device 100 includes an outer ring 110, a connecting plate 120, a shaft seat 130, a rotating shaft 140 and a filter disc 150. The center of the outer ring 110 is equipped with a shaft seat 130 through multiple connecting plates 120. The rotating shaft 140 is rotatably installed in the shaft seat 130. The filter disc 150 is installed at one end of the rotating shaft 140, and the other end is connected to the driver 160 for rotation. The two ends of the outer ring 110 are respectively opposite to each other with an outer cover shell 170 and an inner cover shell 180. A dust collecting chamber 171 is formed between the outer cover shell 170 and the filter disc 150, and an air pressure chamber 181 is formed between the inner cover shell 180 and the filter disc 150. Part of the filter disc 150 is located between the dust collecting chamber 171 and the air pressure chamber 181; pressurized air is introduced into the air pressure chamber 181.

[0042] The filter disc 150 is driven to rotate by the driver 160, and since a portion of the filter disc 150 is located between the dust collecting chamber 171 and the air pressure chamber 181, when pressurized air is introduced into the air pressure chamber 181, the filter disc 150 is backblown, so that the dust on the filter disc 150 is detached and enters the dust collecting chamber 171 for collection, so that the filter disc 150 can be cleaned without stopping the machine.

[0043] During use, the dust collection chamber 171 and the air pressure chamber 181 divide the filter disc 150 into two sections, comprising a portion located between the dust collection chamber 171 and the air pressure chamber 181, and a portion located outside the dust collection chamber 171 and the air pressure chamber 181. The portion of the filter disc 150 located between the dust collection chamber 171 and the air pressure chamber 181 is used for backflushing to clean dust from the filter disc 150, while the portion located outside the dust collection chamber 171 and the air pressure chamber 181 is used for preliminary filtration of the intake air of the magnetic levitation blower device.

[0044] During use, a compressed air pipe may be connected to the inner housing 180 , and compressed air enters the air pressure chamber 181 in the form of intermittent pulses, thereby back-blowing and cleaning the dust on the filter disc 150 .

[0045] In this embodiment, the outer cover 170 and the inner cover 180 cover half of the filter disc 150 , and the filter disc 150 may rotate continuously or intermittently by 180 degrees each time.

[0046] In this embodiment, see Figure 5 The rotating shaft 140 is rotatably connected and positioned with the shaft seat 130 through the bearing 131.

[0047] In this embodiment, see Figure 4 Filter disc 150 includes an outer ring 151, an inner support mesh 152, filter cotton 153, and an outer support mesh 154. Inner support mesh 152 and outer support mesh 154 are fixedly mounted on the inner ends of outer ring 151, respectively. Filter cotton 153 is located between inner support mesh 152 and outer support mesh 154. Rotating shaft 140 is fixedly connected to inner support mesh 152. Outer ring 151, inner support mesh 152, and outer support mesh 154 provide rigid support for filter disc 150.

[0048] exist Figure 4 In the figure, the outer support net 154 is mounted on the outer ring 151 by bolts, so that the outer support net 154 can be removed and the filter cotton 153 can be replaced during regular maintenance.

[0049] Further, see Figure 5 A fixing plate 141 is provided at one end of the rotating shaft 140 connected to the filter disc 150 . The fixing plate 141 has a larger area, thereby improving the stability of the connection between the rotating shaft 140 and the filter disc 150 .

[0050] See also Figure 4 An outer flange 111 and an inner flange 112 are respectively provided inside the outer ring 110 and on both sides of the filter disc 150. The edge of the filter disc 150 is located between the outer flange 111 and the inner flange 112, which improves the sealing performance of the edge of the filter disc 150 and the stability of the filter disc 150 during rotation, and also prevents the filter disc 150 from being deformed when subjected to pressurized air.

[0051] In this embodiment, see Figure 3 A driven pulley 142 is installed at the other end of the rotating shaft 140, and a driving pulley 161 is installed on the output shaft of the driver 160. The driven pulley 142 and the driving pulley 161 are connected and driven by a belt 162.

[0052] The driver 160 may be a servo motor or a stepper motor, or a common reduction motor.

[0053] In addition to belt drive, the driver 160 may also be chain driven or directly connected.

[0054] See also Figure 6 、 11 An air pipe 190 is installed in the air pressure chamber 181 , one end of the air pipe 190 is closed, and the other end extends out of the air pressure chamber 181 . A plurality of air blowing nozzles 191 are installed on the air pipe 190 on the side facing the filter disc 150 .

[0055] When in use, the other end of the air pipe 190 is connected to a compressed air source through a pipeline. When the filter disc 150 rotates, the filter disc 150 can be backblown through the blowing nozzle 191, thereby achieving a better cleaning effect.

[0056] Preferably, the compressed air enters the air pipe 190 in the form of intermittent pulses, which can form a blowing effect.

[0057] There may be one or more air pipes 190 .

[0058] See also Figure 6 、 8 A negative pressure dust collection interface 172 is provided on the dust collection chamber 171. The negative pressure dust collection interface 172 is connected to the dust collection pipe of the vacuum cleaner when in use, thereby forming a negative pressure in the dust collection chamber 171 and collecting dust.

[0059] When the negative pressure dust suction interface 172 is not provided, a filter can also be provided on the outer cover shell 170 for exhaust.

[0060] Example 2:

[0061] See also Figure 2 A magnetic levitation blower device includes a box body 200, and a primary filtering device 100 is installed at the air inlet of the box body 200.

[0062] The working principle or action process of the utility model is as follows:

[0063] See also Figure 7-11 The filter disc 150 is driven to rotate by the driver 160. When pressurized air is introduced into the air pressure chamber 181, the filter disc 150 is back-blown, so that the dust on the filter disc 150 is separated and enters the dust collecting chamber 171 for collection.

[0064] The part of the filter disc 150 located between the dust collecting chamber 171 and the air pressure chamber 181 is used for backblowing to clean the dust on the filter disc 150, while the part of the filter disc 150 located outside the dust collecting chamber 171 and the air pressure chamber 181 is used for preliminary filtration of the air intake of the magnetic levitation blower equipment, so that the filter disc 150 can be cleaned without stopping the machine.

Claims

1. A primary filtration device (100), characterized in that: The invention comprises an outer ring (110), a connecting plate (120), a shaft seat (130), a rotating shaft (140) and a filter disc (150), wherein the center of the outer ring (110) is provided with a shaft seat (130) via a plurality of connecting plates (120), a rotating shaft (140) is rotatably installed in the shaft seat (130), one end of the rotating shaft (140) is provided with a filter disc (150), and the other end is connected to the driver (160) for rotation, an outer cover shell (170) and an inner cover shell (180) are respectively provided at two opposite ends of the outer ring (110), a dust collecting chamber (171) is formed between the outer cover shell (170) and the filter disc (150), an air pressure chamber (181) is formed between the inner cover shell (180) and the filter disc (150), and a portion of the filter disc (150) is located between the dust collecting chamber (171) and the air pressure chamber (181); pressurized air is introduced into the air pressure chamber (181).

2. A primary filtration device (100) according to claim 1, characterized in that: The filter disc (150) comprises an outer ring (151), an inner support net (152), filter cotton (153) and an outer support net (154). The inner support net (152) and the outer support net (154) are fixedly mounted at both ends of the inner portion of the outer ring (151), respectively. The filter cotton (153) is located between the inner support net (152) and the outer support net (154). The rotating shaft (140) is fixedly connected to the inner support net (152).

3. A primary filtration device (100) according to claim 1 or 2, characterized in that: A fixing plate (141) is provided at one end of the rotating shaft (140) connected to the filter disc (150).

4. A primary filtration device (100) according to claim 1 or 2, characterized in that: An outer flange (111) and an inner flange (112) are respectively provided inside the outer ring (110) and on both sides of the filter disc (150), and the edge of the filter disc (150) is located between the outer flange (111) and the inner flange (112).

5. The primary filtration device (100) according to claim 1, characterized in that: A driven pulley (142) is mounted on the other end of the rotating shaft (140), a driving pulley (161) is mounted on the output shaft of the driver (160), and the driven pulley (142) and the driving pulley (161) are connected for transmission via a belt (162).

6. The primary filtration device (100) according to claim 1, characterized in that: An air pipe (190) is installed in the air pressure chamber (181), one end of the air pipe (190) is closed, and the other end extends out of the air pressure chamber (181). A plurality of air blowing nozzles (191) are installed on the air pipe (190) on the side facing the filter disc (150).

7. The primary filtration device (100) according to claim 1, characterized in that: The dust collection chamber (171) is provided with a negative pressure dust suction interface (172).

8. A magnetic levitation blower device, comprising a box (200), wherein an air inlet of the box (200) is installed with a primary filtering device (100) according to any one of claims 1 to 7.

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