CN114082261A - Air filtering structure without shutdown for replacing filter element - Google Patents
Air filtering structure without shutdown for replacing filter element Download PDFInfo
- Publication number
- CN114082261A CN114082261A CN202111268857.8A CN202111268857A CN114082261A CN 114082261 A CN114082261 A CN 114082261A CN 202111268857 A CN202111268857 A CN 202111268857A CN 114082261 A CN114082261 A CN 114082261A
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- China
- Prior art keywords
- air inlet
- filter
- connecting rod
- inlet grille
- air
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Classifications
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- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0012—In-line filters
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
-
- 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
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
Abstract
The invention discloses an air filtering structure capable of replacing a filter element without stopping machine, which comprises at least two door frame shells, wherein a coarse filter, a fine filter and an air inlet grille are sequentially arranged in each door frame shell along the air inlet direction, and the air inlet grille is transversely and uniformly distributed in the door frame shells; the cross section of the air inlet grille is in an L shape and comprises a wind shielding part and a driving part, a rotating shaft is arranged at the junction of the wind shielding part and the driving part, and two ends of the air inlet grille are rotationally connected with the door frame shell through the rotating shaft; an opening and closing mechanism for controlling the rotation of the air inlet grille to open and close is arranged between the driving part of the air inlet grille and the fine filter along the air inlet direction; when the filter element is replaced, the air inlet grille is automatically closed, and after the fine filter is installed, the air inlet grille is automatically in an open state, so that the filter element is replaced without stopping, and unfiltered air can be prevented from entering the interior of equipment in the replacement process; the air quantity adjusting device is simple to operate, has the air quantity adjusting function and can meet various air quantity adjusting requirements.
Description
Technical Field
The invention relates to the technical field of air filtering equipment, in particular to an air filtering structure capable of replacing a filter element without stopping.
Background
The air compressor needs to continuously suck air from the atmosphere in the working process, and the air contains solid particles or impurities, so that the rotor of the air compressor is damaged, and therefore, an air filter needs to be installed at an air inlet of the air compressor. After the filter is used for a period of time, the filter element is blocked due to accumulation of particles, so that the pressure loss of the filter is increased, the air flow sucked by the air compressor is reduced, the energy consumption of the air compressor is too high, the inside of the air compressor is overheated, and even the air compressor is damaged, and therefore the filter or the internal filter element needs to be replaced in time.
At present, the air inlet of the air compressor generally adopts a cylindrical filter or a planar filter, and both the cylindrical filter and the planar filter can be replaced after the air compressor is stopped. And the requirement of a client cannot be met on occasions needing continuous operation.
Disclosure of Invention
The technical purpose is as follows: the invention discloses an air filtering structure capable of continuously operating without stopping to replace a filter element, aiming at the defect that the air inlet of the existing air compressor needs to be stopped to replace the filter element and cannot continuously operate.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
an air filtering structure without shutdown for replacing a filter element comprises at least two door frame shells, wherein a coarse filter, a fine filter and an air inlet grille are sequentially arranged in each door frame shell along an air inlet direction, and the air inlet grilles are uniformly distributed in the door frame shells along the transverse direction; the cross section of the air inlet grille is in an L shape and comprises a wind shielding part and a driving part, a rotating shaft is arranged at the junction of the wind shielding part and the driving part, and two ends of the air inlet grille are rotationally connected with the door frame shell through the rotating shaft; an opening and closing mechanism for controlling the rotation of the air inlet grille to open and close is arranged between the driving part of the air inlet grille and the fine filter along the air inlet direction;
the opening and closing mechanisms are symmetrically arranged at the left end and the right end of the driving part and respectively comprise a connecting rod and a guide groove, the driving part is hinged with the connecting rod, one side of the connecting rod, which is close to the fine filter, is provided with a convex block matched with the guide groove, the upper part of the guide groove is obliquely arranged, and the oblique direction of the upper part of the guide groove is oblique from one side close to the convex block to one side away from the air inlet direction; when the fine filter is installed, the lug is pressed downwards by the inclined part of the guide groove, and the air inlet grille is driven to rotate around the rotating shaft.
Preferably, the width of the wind shielding part of the air inlet grille is larger than the distance between the rotating shafts of the two adjacent upper and lower air inlet grilles, the inclination angle of the guide groove is 45 degrees, the vertical distance of the movement of the connecting rod driven by the guide groove is equal to the width of the driving part, and when the fine filter is completely pushed in, the air inlet grille rotates around the rotating shafts by 90 degrees.
Preferably, the spring for resetting the connecting rod is arranged on the lug of the connecting rod, the spring is obliquely arranged on the lug along the direction vertical to the inclined part of the guide groove, one end of the spring is fixedly connected with the lug, and the other end of the spring faces to one end where the fine filter is located and is fixedly connected with the doorframe shell; when the fine filter is disassembled, the spring pulls the connecting rod upwards to reset, and the fine filter is provided with a spring avoiding groove corresponding to the spring.
Preferably, the convex block is in an L shape, one bent end is bent inwards from the end part of the convex block, the bent section of the convex block and the spring are staggered with each other along a vertical plane parallel to the air inlet direction, the spring avoiding groove is close to the outer side of the fine filter and is positioned above the guide groove, and the spring is limited between the side surface of the fine filter and the inner side surface of the doorframe shell.
Preferably, the invention is characterized in that the lug is connected with the connecting rod in a sliding way in the range of a vertical area corresponding to the guide groove, and a locking mechanism for locking the lug and the connecting rod is arranged on the connecting rod.
Preferably, the locking mechanism of the invention comprises a locking knob screwed on the lug, a U-shaped buckle plate is arranged on the locking knob, the end part of the U-shaped buckle plate is movably connected with the locking knob, the connecting rod is positioned at the bending part of the U-shaped buckle plate, and the lug and the connecting rod are tightly pressed by rotating the locking knob.
Preferably, the connecting rod of the invention is provided with anti-skid transverse grains at the area matched with the U-shaped buckle plate.
Preferably, the door lock is arranged on the door frame shell, the corresponding lock catches are arranged on the coarse filter and the door frame shell, the coarse filter, the fine filter and the door frame shell are fixed through the door lock, and the fine filter is tightly pressed in the door frame shell by the coarse filter.
Has the advantages that: the air filtering structure needing to be shut down and the filter element replaced has the following beneficial effects:
1. the air inlet on the other door frame shells are kept open to provide air volume for equipment when a filter element on one door frame shell is replaced; because the short-term air input that the renew cartridge caused changes, can not cause the influence to the equipment operation, realize guaranteeing the equipment operation while, carry out the cleanness of filter core, change, satisfy the demand that lasts the air feed.
2. The air inlet grille adopts an L-shaped shape and is rotatably connected with the door frame shell at the junction; when the fine filter is dismantled, under the action of gravity of the air inlet grille and the pulling force of the spring, the air inlet grille 4 is kept in a closed state, and the phenomenon that unfiltered air enters equipment to cause equipment damage after the filter is dismantled is avoided.
3. The invention realizes that the air inlet grille is automatically driven to open to recover air supply in the process of loading the fine filter through the opening and closing mechanism, and the operation is simple and convenient.
4. The width of the wind shielding part of the air inlet grille is larger than the distance between the rotating shafts of the two adjacent air inlet grills, so that the rotating shafts cannot influence the rotation of the air inlet grille, complete opening and closing can be realized, the inclination angle of the guide groove is 45 degrees, the horizontal movement distance and the vertical movement distance of the connecting rod are consistent in the process that the guide groove pushes the lug to move, the air inlet grille can be opened at 90 degrees, and when the fine filter is completely installed, the air inlet grille is completely opened, and air inlet cannot be blocked.
5. The lug and the connecting rod are connected in a sliding manner and are provided with the locking mechanism for locking, so that the production cost can be greatly increased by replacing a new shell or a new grid on occasions needing to control the air intake because the size of the door frame shell is fixed; therefore, by adjusting the position of the convex block on the connecting rod, under the condition that the guide groove on the fine filter is not changed, the moving distance of the connecting rod due to the pushing of the guide groove is changed, the opening degree of the air inlet grille is further adjusted, and the air inlet amount is adjusted.
6. According to the invention, the locking knob is rotated to adjust the relative position between the locking mechanism and the bump, and the U-shaped buckle plate is movably connected with the locking knob in a matching manner, so that the connecting rod and the bump are pressed tightly, and the relative position between the connecting rod and the bump is fixed; the operation is simple, convenient and quick, the structure can not influence other parts of the air inlet structure, the structure is compact, and the occupied space is small.
7. The anti-skidding cross grains are arranged on the connecting rod, so that the friction force between the connecting rod and the U-shaped buckle plate is increased, and the air inlet is prevented from being influenced by the relative displacement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a view of a fine filter according to the present invention;
FIG. 3 is a view showing the construction of the locking mechanism of the present invention
FIG. 4 is a state view of the components of the present invention prior to assembly;
FIG. 5 is a view of the assembled components of the present invention;
FIG. 6 is a state view of the assembled components of the present invention;
the device comprises a door frame shell, a door frame rough filter, a door frame fine filter, an air inlet grille, a wind shielding part, a driving part, a 7-U-shaped buckle plate, a connecting rod, a guide groove, a protrusion, a spring avoiding groove and a locking knob, wherein the door frame shell is 1, the rough filter is 2, the fine filter is 3, the air inlet grille is 4, the wind shielding part is 5, the driving part is 6, the U-shaped buckle plate is 7, the connecting rod is 8, the guide groove is 9, the protrusion is 10, the spring is 11, the spring avoiding groove is 12, and the locking knob is 13.
Detailed Description
The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the described embodiment.
As shown in fig. 1 and 2, the air filtering structure for replacing a filter element without shutdown provided by the invention comprises at least two door frame housings 1, wherein a coarse filter 2, a fine filter 3 and an air inlet grille 4 are sequentially arranged in each door frame housing 1 along an air inlet direction, and the air inlet grille 4 is uniformly distributed in the door frame housing 1 along a transverse direction; the cross section of the air inlet grille 4 is in an L shape and comprises a wind shielding part 5 and a driving part 6, a rotating shaft is arranged at the junction of the wind shielding part 5 and the driving part 6, and two ends of the air inlet grille 4 are rotatably connected with the door frame shell 1 through the rotating shaft; an opening and closing mechanism for controlling the rotation of the air inlet grille 4 to open and close is arranged between the driving part 6 of the air inlet grille and the fine filter 3 along the air inlet direction;
the opening and closing mechanisms are symmetrically arranged at the left end and the right end of the driving part and respectively comprise a connecting rod 8 and a guide groove 9, the driving part 6 is hinged with the connecting rod 8, a convex block 10 matched with the guide groove 9 is arranged at one side of the connecting rod 8 close to the fine filter, the upper part of the guide groove 9 is obliquely arranged, and the oblique direction of the upper part of the guide groove 9 is oblique from one side close to the convex block 10 to one side back to the air inlet direction; when the fine filter is installed, the inclined part of the guide groove 9 presses the projection 10 down to drive the air inlet grille 4 to rotate around the rotating shaft.
In order to ensure that the air inlet grille can prevent external air from entering the equipment when being closed and can be completely opened when air is introduced, the width of the wind shielding part of the air inlet grille 4 is larger than the distance between two adjacent air inlet grille rotating shafts, the width of the driving part 6 is smaller than the distance between the two adjacent air inlet grille rotating shafts, the inclination angle of the guide groove 9 is 45 degrees, the vertical moving distance of the connecting rod 8 driven by the guide groove 9 is equal to the width of the driving part, and when the fine filter 3 is completely pushed in, the air inlet grille rotates by 90 degrees around the rotating shafts.
Meanwhile, when the air inlet grille 4 is in a closed state, the lower end of the wind shielding part of the upper air inlet grille 4 is superposed with the upper end of the wind shielding part of the lower air inlet grille, so that in order to avoid additional stress on the air inlet grille 4 caused by deviation of thickness, the invention can adopt a half-thickness design on the superposed part of the two grilles, namely the thickness of the superposed area is half of the thickness of the rest areas of the wind shielding part, thus the upper air inlet grille and the lower air inlet grille can be completely jointed when the air inlet grille is closed; meanwhile, the end part weight of the air inlet grille can be reduced, and the opening is convenient.
After the weight of the end part of the air inlet grille is reduced, the sealing is realized by the gravity of the air inlet grille, and the air inlet grille is opened by external air due to suction force generated by air suction inside the equipment, so that the sealing is not tight, and a small amount of air enters the equipment; in order to solve the problem, the invention arranges a spring 11 for resetting the connecting rod on a lug 10 of the connecting rod, the spring 11 is obliquely arranged on the lug 10 along the direction vertical to the inclined part of the guide groove 9, one end of the spring 11 is fixedly connected with the lug 10, and the other end faces to one end of the fine filter 3 and is fixedly connected with the doorframe shell 1; when the fine filter is disassembled, the spring 11 pulls the connecting rod upwards to reset, and the fine filter 3 is provided with a spring avoiding groove 12 corresponding to the spring.
The closing capacity of the intake grill in the closed state is improved by the gravity of the intake grill 4 itself and the upward pulling force of the spring 11.
The spring 11 is positioned above the convex block 10, in order to avoid the interference of the spring on the fine filter 3 and ensure the matching between the end part of the convex block 10 and the guide groove 9 on the fine filter 3, the convex block 10 of the invention adopts an L-shaped shape, one bent end is horizontally bent inwards from the end part of the convex block, the bent section of the convex block 10 and the spring 10 are staggered with each other along a vertical plane parallel to the air inlet direction, the spring avoiding groove 12 is close to the outer side of the fine filter 3 and positioned above the guide groove 9, the spring 11 is limited between the side surface of the fine filter 3 and the inner side surface of the doorframe shell 1, when the fine filter 3 is pushed along the air inlet direction, the spring 11 is positioned in the spring avoiding groove 12, the inclined part of the guide groove 9 pushes the bent section of the convex block to press the connecting rod downwards, the connecting rod can simultaneously move forwards along the air inlet direction under the driving of the air inlet grille, and the air inlet grille 4 is opened.
To the great occasion of amount of wind change, can carry out the regulation of total intake in order to satisfy the demand of different air feed volume through setting up the door frame casing of different quantity, but to the little situation of range of variation, this kind of mode of increasing and decreasing air intake quantity just can't satisfy the user demand.
Therefore, the air filtering structure with the functions of non-stop replacement and air volume adjustment is provided by combining the structure of the invention, in the vertical area range corresponding to the guide groove 9, the lug 10 is connected with the connecting rod 8 in a sliding manner, the connecting rod 8 is provided with a locking mechanism for locking the lug 10 and the connecting rod 8, the locking mechanism is structurally shown in figure 3 and comprises a locking knob 13 which is connected on the lug in a threaded manner, a U-shaped buckle plate 7 is arranged on the locking knob 13, the end part of the U-shaped buckle plate 7 is movably connected with the locking knob 13, the connecting rod 8 is positioned at the bent part of the U-shaped buckle plate 7, the lug 10 and the connecting rod 8 are tightly pressed by rotating the locking knob 13, and anti-skid cross threads are arranged at the area where the connecting rod 8 is matched with the U-shaped buckle plate 7, so that the friction force is increased, and the connection reliability is ensured.
Under the condition that the fine filter 3 and other structures are not changed, the bump 10 is integrally moved downwards, so that the moving distance of the connecting rod is changed under the pushing action of the guide groove 9, and the rotating angle of the air inlet grille 4 cannot reach 90 degrees, so that the opening adjustment of the air inlet grille 4 can be realized, and the air inlet amount in the range of a single door frame shell is changed.
As shown in fig. 4-6, which are state diagrams during the process of replacing the filter element, when the fine filter and the coarse filter are disassembled, the filter is automatically closed under the action of the gravity of the air inlet grille 4 and the traction force of the spring 11, external air cannot enter the equipment from the inlet, and other air inlets supply air normally; after the fine filter 3 is replaced with a new filter element, the filter element is pushed into the doorframe shell 1 along the air inlet direction, the spring 11 is positioned in the spring avoidance groove 12, the guide groove 9 pushes the lug 10 to move downwards and forwards, the connecting rod 8 drives the driving part 6 of the air inlet grid 4 to move, the air inlet grid 4 rotates around the rotating shaft until the angle is 90 degrees, and the filter element is completely opened, so that the filter element is replaced without stopping; when the air inflow is required to be adjusted, the lug 10 moves downwards, the stroke of the connecting rod 8 is changed, and the opening degree of the air inlet grille 4 is adjusted, so that the air inflow is adjusted.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. An air filtering structure without shutdown for replacing a filter element is characterized by comprising at least two door frame shells (1), wherein a coarse filter (2), a fine filter (3) and an air inlet grille (4) are sequentially arranged in each door frame shell (1) along an air inlet direction, and the air inlet grille (4) is transversely and uniformly distributed in the door frame shells (1); the cross section of the air inlet grille (4) is L-shaped and comprises a wind shielding part (5) and a driving part (6), a rotating shaft is arranged at the junction of the wind shielding part (5) and the driving part (6), and two ends of the air inlet grille (4) are rotatably connected with the door frame shell (1) through the rotating shaft; an opening and closing mechanism for controlling the rotation of the air inlet grille (4) to open and close is arranged between a driving part (6) of the air inlet grille and the fine filter (3) along the air inlet direction;
the opening and closing mechanisms are symmetrically arranged at the left end and the right end of the driving part and respectively comprise a connecting rod (8) and a guide groove (9), the driving part (6) is hinged with the connecting rod (8), one side of the connecting rod (8) close to the fine filter is provided with a convex block (10) matched with the guide groove (9), the upper part of the guide groove (9) is obliquely arranged, and the oblique direction of the upper part of the guide groove (9) is oblique from one side close to the convex block (10) to one side back to the air inlet direction; when the fine filter is installed, the inclined part of the guide groove (9) presses the lug (10) downwards to drive the air inlet grille (4) to rotate around the rotating shaft.
2. An air filter structure for replacing a filter element without stopping machine according to claim 1, characterized in that the width of the wind shielding part of the air inlet grille (4) is larger than the distance between the rotating shafts of the two adjacent air inlet grills, the inclination angle of the guide groove (9) is 45 degrees, the vertical distance of the movement of the connecting rod (8) driven by the guide groove (9) is equal to the width of the driving part, and when the fine filter (3) is completely pushed in, the air inlet grille rotates around the rotating shafts by 90 degrees.
3. An air filter structure for replacing a filter core without shutdown as claimed in claim 2, characterized in that a spring (11) for resetting the connecting rod is arranged on the lug (10) of the connecting rod, the spring (11) is obliquely arranged on the lug (10) along the direction perpendicular to the oblique part of the guide groove (9), one end of the spring (11) is fixedly connected with the lug (10), and the other end faces to the end where the fine filter (3) is arranged and is fixedly connected with the door frame shell (1); when the fine filter is detached, the spring (11) pulls the connecting rod upwards to reset, and the fine filter (3) is provided with a spring avoiding groove (12) corresponding to the spring.
4. An air filter structure for replacing a filter element without stopping a machine according to claim 2, wherein the lug (10) is in an L shape, one end of the bend is horizontally bent inwards from the end part of the lug, the bent section of the lug (10) and the spring (10) are staggered with each other along a vertical plane parallel to the air inlet direction, the spring avoiding groove (12) is close to the outer side of the fine filter (3) and is positioned above the guide groove (9), and the spring (11) is limited between the side surface of the fine filter (3) and the inner side surface of the doorframe shell (1).
5. An air filter construction for filter cartridge replacement without shutdown according to claim 1, characterized in that the lug (10) is connected to the connecting rod (8) in a sliding manner in the vertical area corresponding to the guide slot (9), and that a locking mechanism for locking the lug (10) to the connecting rod (8) is provided on the connecting rod (8).
6. The air filtering structure for replacing the filter element without shutdown according to claim 5, wherein the locking mechanism comprises a locking knob (13) screwed on the lug, a U-shaped buckle plate (7) is arranged on the locking knob (13), the end part of the U-shaped buckle plate (7) is movably connected with the locking knob (13), the connecting rod (8) is positioned at the bent part of the U-shaped buckle plate (7), and the lug (10) is tightly pressed with the connecting rod (8) by rotating the locking knob (13).
7. An air filter structure for replacing a filter element without stopping machine according to claim 6, characterized in that the connecting rod (8) is provided with anti-skid cross striations at the area where the connecting rod is matched with the U-shaped buckle plate (7).
8. The air filtering structure for replacing the filter element without shutdown as claimed in claim 1, wherein a door lock is arranged on the door frame shell, corresponding lock catches are arranged on the coarse filter and the door frame shell, the coarse filter (2), the fine filter (3) and the door frame shell (1) are fixed through the door lock, and the fine filter (3) is pressed in the door frame shell (1) by the coarse filter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111268857.8A CN114082261B (en) | 2021-10-29 | 2021-10-29 | Air filtering structure without shutdown and filter element replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111268857.8A CN114082261B (en) | 2021-10-29 | 2021-10-29 | Air filtering structure without shutdown and filter element replacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114082261A true CN114082261A (en) | 2022-02-25 |
| CN114082261B CN114082261B (en) | 2022-11-18 |
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ID=80298184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111268857.8A Active CN114082261B (en) | 2021-10-29 | 2021-10-29 | Air filtering structure without shutdown and filter element replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114082261B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025567A (en) * | 2022-08-15 | 2022-09-09 | 山西辉能科技有限公司 | Dust filtering and recovering device |
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| US6006924A (en) * | 1997-05-14 | 1999-12-28 | Pti Technologies, Inc. | Multi-media filtration system with reusable and demountable filter cartridge |
| CN1357720A (en) * | 2001-12-26 | 2002-07-10 | 乐金电子(天津)电器有限公司 | Front plate unit of split air conditioner |
| EP1537903A1 (en) * | 2003-12-06 | 2005-06-08 | Weinmann Geräte für Medizin GmbH & Co. KG | Apparatus with filter |
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| CN107757348A (en) * | 2017-11-22 | 2018-03-06 | 怡得乐电子(杭州)有限公司 | A kind of adjustable air-inlet grille for automobile of opening angle |
| KR102121318B1 (en) * | 2019-09-18 | 2020-06-11 | 박석행 | Mask having fine dusk filter |
| CN111336610A (en) * | 2020-03-16 | 2020-06-26 | 王芝香 | Movable indoor air purifier |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006924A (en) * | 1997-05-14 | 1999-12-28 | Pti Technologies, Inc. | Multi-media filtration system with reusable and demountable filter cartridge |
| CN1357720A (en) * | 2001-12-26 | 2002-07-10 | 乐金电子(天津)电器有限公司 | Front plate unit of split air conditioner |
| EP1537903A1 (en) * | 2003-12-06 | 2005-06-08 | Weinmann Geräte für Medizin GmbH & Co. KG | Apparatus with filter |
| CN104564347A (en) * | 2014-11-26 | 2015-04-29 | 成都博世德能源科技股份有限公司 | Rotary blade type air filtering device for gas turbine |
| CN107757348A (en) * | 2017-11-22 | 2018-03-06 | 怡得乐电子(杭州)有限公司 | A kind of adjustable air-inlet grille for automobile of opening angle |
| KR102121318B1 (en) * | 2019-09-18 | 2020-06-11 | 박석행 | Mask having fine dusk filter |
| CN111336610A (en) * | 2020-03-16 | 2020-06-26 | 王芝香 | Movable indoor air purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115025567A (en) * | 2022-08-15 | 2022-09-09 | 山西辉能科技有限公司 | Dust filtering and recovering device |
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| Publication number | Publication date |
|---|---|
| CN114082261B (en) | 2022-11-18 |
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