CN116726623B - Portable air filtering device - Google Patents

Portable air filtering device

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Publication number
CN116726623B
CN116726623B CN202310812392.0A CN202310812392A CN116726623B CN 116726623 B CN116726623 B CN 116726623B CN 202310812392 A CN202310812392 A CN 202310812392A CN 116726623 B CN116726623 B CN 116726623B
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CN
China
Prior art keywords
fan
cylinder
planetary gear
fixedly connected
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310812392.0A
Other languages
Chinese (zh)
Other versions
CN116726623A (en
Inventor
郭菁哲
罗斌
马润雪
周尔凯
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Lanzhou University
Original Assignee
Lanzhou University
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Filing date
Publication date
Application filed by Lanzhou University filed Critical Lanzhou University
Priority to CN202310812392.0A priority Critical patent/CN116726623B/en
Publication of CN116726623A publication Critical patent/CN116726623A/en
Application granted granted Critical
Publication of CN116726623B publication Critical patent/CN116726623B/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
    • B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
    • B01D46/0046—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding provoking a tangential stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention relates to a portable air filtering device which comprises an upper cylinder body and a lower cylinder body, wherein a driving motor is arranged in the lower cylinder body, a first fan, a reflux box, an air compressing turbine and a second fan are sequentially sleeved below an output shaft of the driving motor, the first fan, the reflux box and the second fan are in transmission connection with the output shaft of the driving motor through a planetary gear transmission, a filtering ring pipe is sleeved between the lower edge of the upper cylinder body and the upper edge of the lower cylinder body, the driving motor is used for driving the first fan, the reflux box, the air compressing turbine and the second fan to rotate, air filtering is completed through the filtering ring pipe, the air compressing turbine is used for improving the pressure of air, the efficiency of the air passing through the filtering ring pipe is improved, in addition, centrifugal force generated when the air compressing turbine rotates surrounds the periphery, 360-degree dead-angle-free air filtering is really achieved, the first fan rotates, impurities on the inner side of second filter cotton are cleaned, and the air filtering effect is prevented from being influenced by the blockage of impurities.

Description

Portable air filtering device
Technical Field
The invention belongs to the technical field of air filtration, and particularly relates to a portable air filtration device.
Background
With the increasing deterioration of environment, air quality gets worse, some places or buildings can be provided with a carbon neutralization air filter device to purify air, however, after the air purifier is used for a long time, a filter screen in the air purifier can be blocked to influence the purification efficiency of the air purifier, and the filter screen is used to easily block a carbon dioxide adsorbent, after the air purifier is used for a long time, the efficiency of carbon dioxide absorption is influenced, china patent application number 202222582641.5 discloses a carbon neutralization air filter device, a ventilation fan sends air into an air inlet pipe rapidly, then large particles in the air are filtered through the filter screen, and then the carbon neutralization is carried out through a carbon dioxide absorbent, and purified air is sent out from an air outlet pipe.
In view of the deficiencies of the prior art, further improvements are needed.
Disclosure of Invention
Accordingly, an object of the present invention is to provide a portable air filtering device to solve the above-mentioned problems.
The portable air filtering device comprises an upper cylinder body and a lower cylinder body, wherein the upper end and the lower end of the upper cylinder body and the lower end of the lower cylinder body are respectively opened, the lower end opening of the upper cylinder body and the upper end opening of the lower cylinder body are respectively diffusion-shaped end openings, vertical supporting rods are uniformly distributed between the edges of the lower end opening of the upper cylinder body and the upper edge of the lower cylinder body, the upper ends of the vertical supporting rods are fixedly connected with the edges of the lower end opening of the upper cylinder body, the lower ends of the vertical supporting rods are fixedly connected with the lower edges of the upper end opening of the lower cylinder body, a driving motor is arranged in the lower cylinder body, the central axis of an output shaft of the driving motor coincides with the central axis of the lower cylinder body and is vertically upwards, a first fan, a reflux box, a gas turbine and a second fan are sequentially sleeved on the lower end opening of the output shaft of the driving motor, the lower side of the second fan is fixedly connected with the gas turbine, and the first fan, the reflux box and the second fan are respectively in transmission connection with the output shaft of the driving motor through planetary gear variators, the driving motor, the middle part and the planetary gear variators below the upper part and the inner wall of the lower cylinder body are fixedly connected with the upper cylinder body through transverse supporting rods.
The planetary gear transmission comprises a box body, a sun gear, a planet gear and a planet carrier, wherein the sun gear and the planet gear are arranged in the box body, the sun gear is positioned in the middle, the planet gear is annularly distributed on the side surface of the sun gear and is respectively meshed with the sun gear and the box body, the planet carrier is rotationally connected on the box body, a rotating shaft of the planet gear is rotationally connected with the planet carrier, the middle part of the sun gear and the middle part of the box body are communicated so as to facilitate the passing of an output shaft of a driving motor, the sun gear of the planetary gear transmission at the middle part and the lower part is fixedly connected with the output shaft of the driving motor, the planet carrier of the planetary gear transmission at the upper part is fixedly connected with the output shaft of the driving motor, the planet carrier of the planetary gear speed changer at the lower position is fixedly connected with the first fan, the planet carrier of the planetary gear speed changer at the middle position is fixedly provided with a first rice-shaped carrier, one end of the first rice-shaped carrier, which is far away from the planet carrier, is fixedly connected with the lower edge of the reflux box, the sun gear of the planetary gear speed changer at the upper position is fixedly connected with the second fan, the characteristics of the planetary gears are utilized to enable the first fan and the reflux box to be compared with the output shaft of the driving motor to rotate in a decelerating way, the first fan and the air compressing turbine are compared with the output shaft of the driving motor to rotate in an accelerating way, the first fan and the reflux box are driven by the two planetary gear speed changers, and the transmission ratio of the corresponding planetary gear speed changers is convenient to be adjusted respectively to realize the rotating speed demands of the first fan and the reflux box.
The utility model discloses a filter device, including lower barrel, support, filter collar, vertical support rod, locating ring, back flow channel lower extreme port and back flow channel upper end port, lower barrel lower extreme is provided with the second rice shape frame, second rice shape frame middle part is provided with the handle, and second rice shape frame outer end is fixed with the locating ring, and locating ring and lower barrel lower port screw-thread fit connection, convenient to detach, and second rice shape frame upside has placed first filter pulp, lower barrel upper edge is provided with the locating plate, and lower barrel lower edge is provided with the fagging, and fagging downside evenly distributed has four landing legs to be convenient for place, and has cup jointed the filter collar between upper barrel lower edge and the lower barrel upper edge, filter collar lower edge and locating plate contact, and concentric distribution has the multilayer filter layer in the locating collar, and the locating collar inner wall is provided with the second filter pulp, and the laminating of second filter pulp and vertical support rod outside, back flow channel upside evenly distributed has a plurality of back flow channel lower extreme ports and back flow channel intercommunication, and back flow channel upper end port point to first filter pulp.
Preferably, the upper end of the upper cylinder body is provided with a handle, so that the portable umbrella is convenient to carry.
Preferably, a filter screen is arranged at the upper port of the upper cylinder body.
Preferably, a fairing is fixed on the upper side of the planetary gear transmission in the upper position.
The invention has the advantages that the driving motor is used for driving the first fan, the backflow box, the air compressing turbine and the second fan to rotate, under the action of the planetary gear transmission, on one hand, the second fan is used for enabling external air to enter from the upper port of the upper cylinder body, after the air compressing turbine is used for compressing and pressurizing, the external air is thrown to the filter ring pipe under the action of centrifugal force generated during rotation of the air compressing turbine, the air is filtered through the filter ring pipe, the pressure of the air is improved through the air compressing turbine, the efficiency of the air passing through the filter ring pipe is improved under the action of air pressure difference inside and outside the upper cylinder body, namely the efficiency of air filtration is improved, in addition, the centrifugal force generated during rotation of the air compressing turbine surrounds the periphery, the air is guaranteed to be uniformly blown to the periphery after filtration, 360-degree dead-angle-free air filtration is realized, the backflow box is rotated, the backflow channel position is adjusted, the first fan is rotated, the external air is enabled to reversely pass through the filter ring pipe, impurities on the inner side of the second filter cotton are adsorbed onto the first filter cotton, the clearance of the impurities on the second filter cotton is prevented from being blocked by the impurities, and the air filtration effect is prevented.
Drawings
FIG. 1 shows the present invention a main body external structure diagram;
FIG. 2 shows the present invention a main body internal structure diagram;
Fig. 3 is a structural view of the planetary transmission of the present invention.
In the drawing, the reference numerals comprise an upper cylinder body 1, a handle 101, a lower cylinder body 2, a positioning plate 201, a supporting plate 202, supporting legs 203, a vertical supporting rod 3, a driving motor 4, a first fan 5, a reflux box 6, a reflux channel 601, a gas turbine 7, a second fan 8, a planetary gear transmission 9, a transverse supporting rod 10, a box body 11, a sun gear 12, a planet wheel 13, a planet carrier 14, a first rice-shaped frame 15, a fairing 16, a second rice-shaped frame 17, a handle 1701, a positioning ring 1702, a first filter cotton 18, a filter collar 19, a second filter cotton 20 and a filter screen 21.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
As shown in fig. 1-3, a portable air filtering device comprises an upper cylinder 1 and a lower cylinder 2, wherein the upper and lower ends of the upper cylinder 1 and the lower cylinder 2 are both opened, the lower port of the upper cylinder 1 and the upper port of the lower cylinder 2 are both diffusion-shaped ports, vertical supporting rods 3 are uniformly distributed between the edges of the lower port of the upper cylinder 1 and the upper edge of the lower cylinder 2, the upper ends of the vertical supporting rods 3 are fixedly connected with the edges of the lower port of the upper cylinder 1, the lower ends of the vertical supporting rods 3 are fixedly connected with the lower edge of the upper port of the lower cylinder 2, a driving motor 4 is arranged in the lower cylinder 2, the central axis of an output shaft of the driving motor 4 coincides with the central axis of the lower cylinder 2 and is vertically upward, a first fan 5, a reflux box 6, a gas turbine 7 and a second fan 8 are sequentially sleeved on the lower end of the output shaft of the driving motor 2, the lower side of the reflux box 6 is fixedly connected with the gas turbine 7, the lower side of the second fan 8 is fixedly connected with the gas turbine 7 through a planetary gear 9, the first fan 5, the reflux box 6 and the second fan 8 are fixedly connected with the output shaft of the driving motor through a planetary gear 9, the planetary gear 9 and the upper inner wall of the lower cylinder 2 and the upper and the lower cylinder 2 are fixedly connected with the upper cylinder 1 through a planetary gear 10.
In this embodiment, the planetary gear transmission 9 includes a box 11, a sun gear 12, a planet wheel 13 and a planet carrier 14, wherein the sun gear 12, the planet wheel 13 are all disposed in the box 11, the sun gear 12 is located in the middle, the planet wheel 13 is distributed on the side of the sun gear 12 in a ring shape, and the planet wheel 13 is respectively meshed with the sun gear 12 and the box 11, the planet carrier 14 is rotationally connected on the box 11, the rotating shaft of the planet wheel 13 is rotationally connected with the planet carrier 14, the middle part of the sun gear 12 and the middle part of the box 11 are communicated, the output shaft of the driving motor 4 is facilitated to pass through, the sun gear 12 of the planetary gear transmission 9 in the middle part and the lower part are fixedly connected with the output shaft of the driving motor 4, the planet carrier 14 of the planetary gear transmission 9 in the upper part is fixedly connected with the output shaft of the driving motor 4, the planet carrier 14 of the planetary gear transmission 9 in the lower part is fixedly connected with the first fan 5, the planet carrier 15 is fixedly connected with the planet carrier 14 of the planetary gear transmission 9 in the middle part, one end of the planet carrier 15 far from the planet carrier 14 is fixedly connected with the lower edge of the reflux box 6, the upper part of the planet carrier 12 is fixedly connected with the lower edge of the first fan 6, the upper part of the sun gear transmission 9 is correspondingly rotatably connected with the second output shaft of the first fan 6, the first impeller 8 and the first impeller and the second impeller is rotatably connected with the first impeller 6 and the second impeller 4 is correspondingly rotatably connected with the first impeller 6 and the first impeller 4 is rotatably 4 and the lower than the first impeller 4 is 5.
In this embodiment, the lower end of the lower cylinder 2 is provided with a second rice-shaped frame 17, the middle part of the second rice-shaped frame 17 is provided with a handle 1701, the outer end of the second rice-shaped frame 17 is fixed with a positioning ring 1702, the positioning ring 1702 is in threaded fit connection with the lower port of the lower cylinder 2, the disassembly is convenient, the first filter cotton 18 is placed on the upper side of the second rice-shaped frame 17, the upper edge of the lower cylinder 2 is provided with a positioning plate 201, the lower edge of the lower cylinder 2 is provided with a supporting plate 202, four supporting legs 203 are uniformly distributed on the lower side of the supporting plate 202 and are convenient to place, a filter collar 19 is sleeved between the lower edge of the upper cylinder 1 and the upper edge of the lower cylinder 2, the lower edge of the filter collar 19 is in contact with the positioning plate 201, a plurality of layers of filter layers are concentrically distributed in the positioning collar 19, the inner wall of the positioning collar 19 is provided with a second filter cotton 20, the second filter cotton 20 is attached to the outer side of the vertical supporting rod 3, a plurality of reflux channels 601 are uniformly distributed on the upper side of the reflux box 6, the lower end ports of the reflux channels 601 are communicated with the reflux box 6, and the upper end ports of the reflux channels 601 point to the first filter cotton 18.
In this embodiment, the upper end of the upper cylinder 1 is provided with a handle 101, which is convenient for carrying.
In this embodiment, a filter screen 21 is disposed at the upper port of the upper cylinder 1.
In the present embodiment, a cowling 16 is fixed to the upper side of the planetary transmission 9 in the upper position.
When the filter cotton filter is used, the driving motor 4 is started, the driving motor 4 is utilized to drive the first fan 5, the backflow box 6, the air compressing turbine 7 and the second fan 8 to rotate, under the action of the planetary gear transmission 9, the rotating speed of the second fan 8 is equal to that of the air compressing turbine 7 and is larger than that of the backflow box 6, under the action of the second fan 8, external air enters from the upper port of the upper cylinder body 1, after the air entering the upper cylinder body 1 is compressed and pressurized by the air compressing turbine 7, the air is thrown to the filter collar 19 under the action of centrifugal force generated when the air compressing turbine 7 rotates, impurities in the air are filtered by the second filter cotton 20 and are discharged from the outside after being filtered by the filter collar 19, on the other hand, the backflow box 6 rotates, the position of the backflow channel 601 is adjusted, the first fan 5 rotates, the external air reversely flows through the filter collar 19, the impurities on the inner side of the second filter cotton 20 sequentially pass through the backflow channel 601 and the backflow box 6 to the first filter cotton 18, the impurities on the second filter cotton 20 are prevented from being blocked, and the impurities on the second filter cotton 20 are periodically cleaned by the second filter cotton frame 17018 after the second filter cotton handle 20 is removed by the second filter cotton frame 17017.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (4)

1.一种便携式空气过滤装置，包括上筒体、下筒体，其特征在于：所述上筒体和下筒体上下两端均开口，且上筒体下端口和下筒体上端口均为扩散形端口，上筒体下端口边缘与下筒体上边缘之间均匀分布有竖支杆，竖支杆上端与上筒体下端口边缘固定连接，竖支杆下端与下筒体上端口下边缘固定连接，所述下筒体内设置有驱动电机，驱动电机的输出轴的中轴线与下筒体的中轴线重合且竖直向上，驱动电机的输出轴下向上依次套接有第一风扇、回流箱、压气涡轮和第二风扇，其中回流箱下端开口，第二风扇下侧与压气涡轮固定连接，且第一风扇、回流箱和第二风扇均通过行星齿轮变速器与驱动电机的输出轴传动连接，其中驱动电机、中部和下方的行星齿轮变速器与下筒体内壁之间通过横支杆与下筒体固定连接，上方的行星齿轮变速器通过横支杆与上筒体固定连接；1. A portable air filtration device, comprising an upper cylinder and a lower cylinder, characterized in that: both the upper and lower cylinders are open at their upper and lower ends, and the lower port of the upper cylinder and the upper port of the lower cylinder are both diffuser-shaped ports; vertical support rods are evenly distributed between the edge of the lower port of the upper cylinder and the upper edge of the lower cylinder; the upper end of the vertical support rod is fixedly connected to the edge of the lower port of the upper cylinder, and the lower end of the vertical support rod is fixedly connected to the lower edge of the upper port of the lower cylinder; a drive motor is installed inside the lower cylinder; the central axis of the output shaft of the drive motor coincides with the central axis of the lower cylinder and is vertically upward; a first fan, a return box, a compressor turbine, and a second fan are sequentially sleeved on the output shaft of the drive motor from bottom to top; wherein the lower end of the return box is open; the lower side of the second fan is fixedly connected to the compressor turbine; and the first fan, the return box, and the second fan are all connected to the output shaft of the drive motor via a planetary gear transmission; wherein the drive motor, the middle and lower planetary gear transmissions are fixedly connected to the inner wall of the lower cylinder via a horizontal support rod; and the upper planetary gear transmission is fixedly connected to the upper cylinder via a horizontal support rod. 所述行星齿轮变速器包括箱体、太阳轮、行星轮和行星架，其中太阳轮、行星轮均设置在箱体内，太阳轮位于中部，行星轮环形分布在太阳轮侧面，且行星轮分别与太阳轮和箱体啮合，箱体上转动连接有行星架，行星轮的转轴与行星架转动连接，行星架中部、太阳轮中部和箱体中部贯通，其中中部、下方位置行星齿轮变速器的太阳轮与驱动电机的输出轴固定连接，上方位置行星齿轮变速器的行星架与驱动电机的输出轴固定连接，下方位置行星齿轮变速器的行星架与第一风扇固定连接，中部位置行星齿轮变速器的行星架上固定有第一米形架，第一米形架远离行星架的一端与回流箱下边缘固定连接，上方位置行星齿轮变速器的太阳轮与第二风扇固定连接；The planetary gear transmission includes a housing, a sun gear, planet gears, and a planet carrier. The sun gear and planet gears are both housed within the housing, with the sun gear located in the center. The planet gears are arranged in a ring around the side of the sun gear and mesh with both the sun gear and the housing. A planet carrier is rotatably connected to the housing, and the planet gear shafts are rotatably connected to the planet carrier. The middle of the planet carrier, the middle of the sun gear, and the middle of the housing are interconnected. The sun gear of the planetary gear transmission located in the middle and lower positions is fixedly connected to the output shaft of the drive motor. The planet carrier of the planetary gear transmission located in the upper position is fixedly connected to the output shaft of the drive motor. The planet carrier of the planetary gear transmission located in the lower position is fixedly connected to a first fan. A first M-shaped bracket is fixedly mounted on the planet carrier of the planetary gear transmission located in the middle position. The end of the first M-shaped bracket away from the planet carrier is fixedly connected to the lower edge of the return box. The sun gear of the planetary gear transmission located in the upper position is fixedly connected to a second fan. 所述下筒体下端设置有第二米形架，第二米形架中部设置有手柄，第二米形架外端固定有定位环，定位环与下筒体下端口螺纹配合连接，且第二米形架上侧放置有第一滤棉，所述下筒体上边缘设置有定位板，且下筒体下边缘设置有撑板，撑板下侧均匀分布有四根支腿，且上筒体下边缘与下筒体上边缘之间套接有过滤环管，过滤环管下边缘与定位板接触，定位环管内同心分布有多层过滤层，且定位环管内壁设置有第二滤棉，且第二滤棉与竖支杆外侧贴合，所述回流箱上侧均匀分布有多个回流通道，回流通道下端端口与回流箱连通，且回流通道上端端口指向第一滤棉。The lower cylinder is provided with a second M-shaped frame at its lower end, with a handle in the middle of the second M-shaped frame and a positioning ring fixed at its outer end. The positioning ring is threadedly connected to the lower end of the lower cylinder. A first filter cotton is placed on the upper side of the second M-shaped frame. A positioning plate is provided on the upper edge of the lower cylinder, and a support plate is provided on the lower edge of the lower cylinder. Four support legs are evenly distributed on the lower side of the support plate. A filter ring tube is sleeved between the lower edge of the upper cylinder and the upper edge of the lower cylinder. The lower edge of the filter ring tube is in contact with the positioning plate. Multiple filter layers are concentrically distributed inside the positioning ring tube, and a second filter cotton is provided on the inner wall of the positioning ring tube. The second filter cotton is attached to the outer side of the vertical support rod. Multiple return channels are evenly distributed on the upper side of the return box. The lower end of the return channel is connected to the return box, and the upper end of the return channel points to the first filter cotton. 2.根据权利要求1所述的一种便携式空气过滤装置，其特征在于，所述上筒体上端设置有把手。2. The portable air filtration device according to claim 1, characterized in that a handle is provided at the upper end of the upper cylinder. 3.根据权利要求1所述的一种便携式空气过滤装置，其特征在于，所述上筒体上端口部位设置有滤网。3. A portable air filtration device according to claim 1, characterized in that a filter screen is provided at the upper port of the upper cylinder. 4.根据权利要求1所述的一种便携式空气过滤装置，其特征在于，位于上方位置的所述行星齿轮变速器上侧固定有整流罩。4. A portable air filtration device according to claim 1, characterized in that a fairing is fixed on the upper side of the planetary gear transmission located at the upper position.
CN202310812392.0A 2023-07-04 2023-07-04 Portable air filtering device Active CN116726623B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310812392.0A CN116726623B (en) 2023-07-04 2023-07-04 Portable air filtering device

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Application Number Priority Date Filing Date Title
CN202310812392.0A CN116726623B (en) 2023-07-04 2023-07-04 Portable air filtering device

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CN116726623A CN116726623A (en) 2023-09-12
CN116726623B true CN116726623B (en) 2025-11-07

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Citations (3)

* Cited by examiner, † Cited by third party
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CN209053809U (en) * 2018-10-15 2019-07-02 广东美的白色家电技术创新中心有限公司 To counter-rotating fan
CN113074130A (en) * 2021-03-12 2021-07-06 南京湍动节能技术有限公司 Centrifugal contra-rotating air pump with axial air inlet at two ends
CN217538839U (en) * 2022-06-21 2022-10-04 福建华泰电力实业有限公司 Energy-saving cooling device for diesel generating set

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CN209053809U (en) * 2018-10-15 2019-07-02 广东美的白色家电技术创新中心有限公司 To counter-rotating fan
CN113074130A (en) * 2021-03-12 2021-07-06 南京湍动节能技术有限公司 Centrifugal contra-rotating air pump with axial air inlet at two ends
CN217538839U (en) * 2022-06-21 2022-10-04 福建华泰电力实业有限公司 Energy-saving cooling device for diesel generating set

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