CN109464855A - A kind of air filtration structure - Google Patents
A kind of air filtration structure Download PDFInfo
- Publication number
- CN109464855A CN109464855A CN201811639822.9A CN201811639822A CN109464855A CN 109464855 A CN109464855 A CN 109464855A CN 201811639822 A CN201811639822 A CN 201811639822A CN 109464855 A CN109464855 A CN 109464855A
- Authority
- CN
- China
- Prior art keywords
- filter cartridge
- sealing cavity
- pressure
- filter
- ventilation mouth
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000009423 ventilation Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 231100000241 scar Toxicity 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- 239000000428 dust Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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
-
- 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
-
- 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
-
- 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
- B01D46/58—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 parallel
-
- 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
- B01D46/71—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 pressurised gas, e.g. pulsed air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to a kind of air filtration structures, including filter cartridge, filter core is equipped in filter cartridge, ventilating component, vacuum elements and pressure-applying unit are equipped with above filter cartridge, it is attached between ventilating component, vacuum elements and pressure-applying unit and filter cartridge by sealing cavity, sealing cavity is equipped with negative pressure delivery outlet and ventilation mouth, and ventilation mouth is equipped with a positive pressure input port, and wherein negative pressure delivery outlet is connected with vacuum elements.When use, the superposition and connection that three components are carried out to function using a filter cartridge are designed a kind of completely new integral structure, effectively reduce the number of openings at the top of pressure vessel, also it is to reduce the top strength reduction problem generated by aperture, reduces the scar generated by reinforcement for openings.Meanwhile filter cartridge includes hollow seamless pipe, is equipped with several filter cores in seamless pipe, can carry out periodic cleaning, it is simple and convenient.
Description
Technical field
The present invention relates to the technical field of air filter, specifically a kind of air filtration structure more particularly to one
Kind is used for the air filtration structure of the mixture of airstream and strength machine.
Background technique
In the prior art, often extremely complex on the mixture of airstream and strength machine, it needs to be connected with filter structure, pressure apparatus respectively,
It installs highly difficult, causes the mixture of airstream and strength machine bulky.
Since pressure apparatus includes positive pressure input and negative pressure input, the requirement for equipment is entirely different, and strength is mixed
Conjunction machine and filter structure, pressure apparatus can not integrator, not only increase the cost of transport and installation, at the same manufacturing cost compared with
Height, follow-up maintenance get up to be not easy.
Summary of the invention
The purpose of the present invention is to provide a kind of improved air filtration structures, it can overcome filter device in the prior art
It can not be integrated with pressure apparatus, bulky deficiency.
To achieve the goals above, the technical scheme is that a kind of air filtration structure, it is characterised in that: air
Filter structure includes filter cartridge, and filter core is equipped in filter cartridge, is equipped with ventilating component, pumping group above filter cartridge
Part and pressure-applying unit are attached between ventilating component, vacuum elements and pressure-applying unit and filter cartridge by sealing cavity,
Sealing cavity is equipped with negative pressure delivery outlet and ventilation mouth, and ventilation mouth is equipped with a positive pressure input port, wherein negative pressure delivery outlet and pumping
Pneumatic module is connected, and ventilation mouth is connected with ventilating component, and positive pressure input port is connected with pressure-applying unit；Filter cartridge includes hollow
Seamless pipe and the upper and lower flange for being located at seamless pipe both ends, upper flange inside are equipped with filter core pallet, to fixed filter core；Pressurization group
Part includes storage cylinder, and one end of storage cylinder is connected by air valve with sealing cavity, and the other end is connected with compressed air hose；Ventilative group
Part includes permeability cell and the ventilative valve that is located on permeability cell；Vacuum elements include exhaust tube and the extraction valve that is located on exhaust tube
Door.
Preferably, the upper flange inner sidewall of filter cartridge is equipped with one group of groove, V-groove respectively from top to bottom,
Square trench and arc-shaped groove, the lateral wall of filter core pallet, which is equipped with, matches raised line with groove, and filter core pallet is equipped with several
One end of a filter stick providing holes, filter stick is equipped with lid, and lid is fastened in filter stick providing holes.
Further, in an angle, the range of angle is 30-65 degree, ventilation mouth to shape between negative pressure delivery outlet and ventilation mouth
It intersects vertically between positive pressure input port；Ventilation mouth is set on the central axes of sealing cavity, ventilation mouth by ventilative pipeline with
Sealing cavity is connected, and negative pressure delivery outlet is connected by the negative-pressure pipeline of bending with sealing cavity, and the top of sealing cavity is upward
The circular arc lid of protrusion, negative-pressure pipeline, ventilative pipeline volume and sealing cavity between volume ratio be 1:0.7-0.8:4-6；
Negative-pressure pipeline after bending is connected with exhaust tube, and setting is parallel to the horizontal plane in exhaust tube.
Further, positive pressure input port is set to the position 1/3-1/2 of ventilative duct height, and storage cylinder, which is parallel to the horizontal plane, to be set
It sets, angle is equipped between air valve and storage cylinder, the range of angle is 25--45 degree, passes through two pass joints between storage cylinder and air valve
It is connected, two pass joints include horizontal connection portion and oblique cutting interconnecting piece, and the bottom in horizontal connection portion is equipped with a convex block to raise upward.
Further, upper flange links into an integrated entity with sealing cavity, is equipped with several bolts along upper and lower circumference of flange and fixes
Hole is attached between upper and lower flange and seamless pipe by the bolt being located in bolt fixing hole.
Compared with the existing technology, technical solution of the present invention further includes many details in addition to the improvement of overall technical architecture
The improvement of aspect, specifically, having the advantages that
1, improvement project of the present invention, filter cartridge is interior to be equipped with filter core, and ventilating component is equipped with above filter cartridge, is taken out
Pneumatic module and pressure-applying unit are carried out between ventilating component, vacuum elements and pressure-applying unit and filter cartridge by sealing cavity
Three components are carried out the superposition and connection of function using a filter cartridge by connection, design a kind of completely new integral type
Structure, effectively reduces the number of openings at the top of pressure vessel, is also to reduce the top strength reduction problem generated by aperture, reduces
The scar generated by reinforcement for openings；
2, in technical solution of the present invention, filter cartridge includes hollow seamless pipe, is equipped with several filter cores in seamless pipe,
Periodic cleaning can be carried out, it is simple and convenient；
3, the present invention is provided with sealing cavity, and ventilation mouth is set on the central axes of sealing cavity, and ventilation mouth passes through pipeline of breathing freely
Be connected with sealing cavity, negative pressure delivery outlet is connected by the negative-pressure pipeline of bending with sealing cavity, the top of sealing cavity for
The circular arc lid of upper protrusion can be directly attached with pressure vessel so that total becomes a bearing structure；
4, structure of the invention is rationally distributed, and integral type effect is good, reduces production cost, convenient for promoting and utilizing.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is specific implementation structural schematic diagram of the invention.
Fig. 4 is filter cartridge structural schematic diagram of the invention.
Fig. 5 is the another structural schematic diagram of filter cartridge of the invention.
Fig. 6 is the structural schematic diagram of filtering pallet and filter core of the invention.
Fig. 7 is the another structural schematic diagram of filtering pallet and filter core of the invention.
Fig. 8 is the structural schematic diagram of sealing cavity of the invention.
Fig. 9 is the another structural schematic diagram of sealing cavity of the invention.
Figure 10 is the structural schematic diagram of ventilating component of the invention.
Figure 11 is the another structural schematic diagram of ventilating component of the invention.
Figure 12 is pressure-applying unit structural schematic diagram of the invention.
Figure 13 is the another structural schematic diagram of pressure-applying unit of the invention.
Figure 14 is vacuum elements structural schematic diagram of the invention.
Figure 15 is the another structural schematic diagram of vacuum elements of the invention.
Appended drawing reference:
1 filter cartridge, 2 ventilating components, 3 vacuum elements, 4 pressure-applying units, 5 sealing cavities, 6 filter cores；
11 seamless pipes, 12 upper flanges, 13 lower flanges, 14 grooves；
21 permeability cells, 22 ventilative valves；
31 exhaust tubes, 32 evacuating valves；
41 storage cylinders, 42 air valves, 43 2 pass joints, 44 convex blocks；
51 negative pressure delivery outlets, 52 ventilation mouths, 53 positive pressure input ports；
61 filter core pallets.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of air filtration structures, and referring specifically to Fig. 1, difference with the prior art is: air
Filter structure includes filter cartridge 1, and filter core is equipped in filter cartridge, ventilating component 2, pumping are equipped with above filter cartridge
Component 3 and pressure-applying unit 4 are carried out between ventilating component, vacuum elements and pressure-applying unit and filter cartridge by sealing cavity 5
Connection, sealing cavity are equipped with negative pressure delivery outlet 51 and ventilation mouth 52, and ventilation mouth is equipped with a positive pressure input port 53, wherein negative pressure
Delivery outlet is connected with vacuum elements, and ventilation mouth is connected with ventilating component, and positive pressure input port is connected with pressure-applying unit；Filter cartridge
Including hollow seamless pipe 11 and the upper and lower flange 12,13 for being located at seamless pipe both ends, it is equipped with filter core pallet 61 on the inside of upper flange,
To fixed filter core 6；Pressure-applying unit includes storage cylinder, and one end of storage cylinder 41 is connected by air valve 42 with sealing cavity, another
End is connected with compressed air hose；Ventilating component includes permeability cell 21 and the ventilative valve 22 that is located on permeability cell；Vacuum elements packet
The evacuating valve 32 for including exhaust tube 31 and being located on exhaust tube.
Specifically, three components are carried out the superposition and connection of function, design using a filter cartridge by the present invention
A kind of completely new integral structure out, effectively reduces the number of openings at the top of pressure vessel, is also to reduce the top generated by aperture
Portion's strength reduction problem reduces the scar generated by reinforcement for openings.
Meanwhile filter cartridge includes hollow seamless pipe, is equipped with several filter cores in seamless pipe, can be carried out periodically clear
Reason, it is simple and convenient.Ventilation mouth is set on the central axes of sealing cavity, and ventilation mouth is connected by ventilative pipeline with sealing cavity,
Negative pressure delivery outlet is connected by the negative-pressure pipeline of bending with sealing cavity, and the top of sealing cavity is the circular arc lid to raise upward
Body can be directly attached with pressure vessel so that total becomes a bearing structure.
In one embodiment, the present invention is that air-permeative filter, positive pressure input, negative pressure are exported three functions and be considered as just
Three functions, are stacked, sternly by pressure conveying (negative pressure output can regard reversed positive pressure conveying as) using the same filter
Lattice design completely new integral structure assembly structure according to GB150 and related pressure container standard.
Specifically, ventilating component includes permeability cell and the ventilative valve that is located on permeability cell, raised tube top end here
It is bent downwardly the entrance that can further prevent extraneous dust, while controlling container inside and the external world by the opening and closing of valve
The connection and disconnection of air.
Vacuum elements include exhaust tube and the evacuating valve that is located on exhaust tube.Evacuating valve is used to control exhaust tube and holds
Connection and disconnection inside device；Exhaust tube is used to connect the underpressure-generating devices such as vacuum pump.When needing to take out negative pressure to container, close
Vent valve and pressurizing valve are closed, extraction valve is opened, vacuum pump operating can will become negative pressure state inside container by exhaust tube.
Filter cartridge be a kind of both ends be welded with flange to locking-type structure, the upper flange of filter cartridge and sealing are empty
Chamber docking, upper flange inner sidewall are equipped with the groove of one group of special construction, V-groove respectively from top to bottom, square trench and
Arc-shaped groove, V-groove, square trench and arc-shaped groove the ratio between depth be 1:1.1:0.85, the diameter of V type groove >
Diameter > arc-shaped groove diameter of square trench, the groove of this special construction not only make sealing effect more preferable, either
Under conditions of positive pressure or negative pressure, even if slight upwardly or downwardly warpage occurs for filter core pallet, it can guarantee leakproofness, together
When be easily installed and open.
The lateral wall of filter core pallet, which is equipped with, matches raised line with groove, the setting of filter core is able to bear after the two cooperation, together
When keep leakproofness, filter core pallet is equipped with several filter stick providing holes, generally can be set 4-8, along filter core pallet
The center of circle is uniformly distributed, and one end of filter stick is equipped with lid, and lid is fastened in filter stick providing holes.When installation, by several filterings
Stick is mounted on above filter core pallet, then pallet is fixed at the upper flange groove of filter cartridge, and filter core passes through for removing
Air in dust particles.
In another embodiment, ventilation mouth, positive pressure input port, negative pressure delivery outlet, bottom are welded with above sealing cavity
For the flange of special construction, filter core pallet can be fixed by docking and compressing with filter cartridge.
In an angle, the range of angle is 30-65 degree to shape, and ventilation mouth is defeated with positive pressure between negative pressure delivery outlet and ventilation mouth
It intersects vertically between entrance；Ventilation mouth is set on the central axes of sealing cavity, and ventilation mouth passes through ventilative pipeline and sealing cavity
It is connected, negative pressure delivery outlet is connected by the negative-pressure pipeline of bending with sealing cavity, and the top of sealing cavity is the circle to raise upward
Arc lid, negative-pressure pipeline, ventilative pipeline volume and sealing cavity between volume ratio be 1:0.7-0.8:4-6, preferred number
Value is 1:0.8:5, can guarantee that entire sealing cavity keeps sealing constant when negative pressure or positive pressure；Negative-pressure pipeline after bending with
Exhaust tube is connected, and setting is parallel to the horizontal plane in exhaust tube.
Further, positive pressure input port is set to the position 1/3-1/2 of ventilative duct height, and storage cylinder, which is parallel to the horizontal plane, to be set
It sets, angle is equipped between air valve and storage cylinder, the range of angle is 25--45 degree, and preferred angle is 35 degree, storage cylinder and gas
It is connected between valve by two pass joints 43, two pass joints include horizontal connection portion and oblique cutting interconnecting piece, the bottom in horizontal connection portion
The convex block 44 to raise upward equipped with one, this convex block middle section is high, and surrounding is low, is in island shape, wherein intermediate the raised area
Top is corresponding with the least significant end of oblique cutting interconnecting piece.
Specifically, pressure-applying unit by air valve and gas cylinder group at.Air valve be used to control the connection of compressed air pipe with
It disconnects；Storage cylinder one end is connect with air valve, and one end is connect with compressed air pipe, for guaranteeing the moment of air valve unlatching, input
Compressed air pressure in sealing cavity is unlikely to decline.
When breathing freely and vacuumizing usually, the air inside container will drive a small amount of material dust movement and was attached to container
Filter stick surface, causes filter stick to block.Need at this time vent valve, extraction valve close, while the air valve of pressure-applying unit according to " open-
The pulse mode of on/off-pass ... " acts, and to sealing cavity moment injected pulse formula compressed air, will be attached to filter stick surface
Dust blowback return container in, reach cleaning filter stick function；If pressure-applying unit air valve is persistently opened, container can be carried out
Pressurized operation makes to become barotropic state inside container.
Further, upper flange links into an integrated entity with sealing cavity, is equipped with several bolts along upper and lower circumference of flange and fixes
Hole is attached between upper and lower flange and seamless pipe by the bolt being located in bolt fixing hole.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Present invention specific implementation is confined to these above-mentioned explanations.For those of ordinary skill in the art to which the present invention belongs,
Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention
Protection scope.
Claims (5)
1. a kind of air filtration structure, it is characterised in that: air filtration structure includes filter cartridge, is equipped in filter cartridge
Filter core, filter cartridge top are equipped with ventilating component, vacuum elements and pressure-applying unit, ventilating component, vacuum elements and pressurization group
It is attached between part and filter cartridge by sealing cavity, sealing cavity is equipped with negative pressure delivery outlet and ventilation mouth, breathes freely
Mouth is equipped with a positive pressure input port, and wherein negative pressure delivery outlet is connected with vacuum elements, and ventilation mouth is connected with ventilating component, and positive pressure is defeated
Entrance is connected with pressure-applying unit；Filter cartridge includes hollow seamless pipe and the upper and lower flange for being located at seamless pipe both ends, upper method
Blue inside is equipped with filter core pallet, to fixed filter core；Pressure-applying unit includes storage cylinder, and one end of storage cylinder passes through air valve and sealing
Cavity is connected, and the other end is connected with compressed air hose；Ventilating component includes permeability cell and the ventilative valve that is located on permeability cell；It takes out
Pneumatic module includes exhaust tube and the evacuating valve that is located on exhaust tube.
2. a kind of air filtration structure according to claim 1, it is characterised in that: the upper flange inner sidewall of filter cartridge
Equipped with one group of groove, V-groove, square trench and arc-shaped groove respectively from top to bottom, the lateral wall of filter core pallet are set
Have and match raised line with groove, filter core pallet is equipped with several filter stick providing holes, and one end of filter stick is equipped with lid, and lid card is set
In filter stick providing holes.
3. a kind of air filtration structure according to claim 1, it is characterised in that: shape between negative pressure delivery outlet and ventilation mouth
In an angle, the range of angle is 30-65 degree, is intersected vertically between ventilation mouth and positive pressure input port；Ventilation mouth is set to close
It seals on the central axes of cavity, ventilation mouth is connected by ventilative pipeline with sealing cavity, the negative tube that negative pressure delivery outlet passes through bending
Road is connected with sealing cavity, and the top of sealing cavity is the circular arc lid to raise upward, negative-pressure pipeline, ventilative pipeline volume with
Volume ratio between sealing cavity is 1:0.7-0.8:4-6；Negative-pressure pipeline after bending is connected with exhaust tube, exhaust tube and level
Face is arranged in parallel.
4. a kind of air filtration structure according to claim 3, it is characterised in that: positive pressure input port is set to ventilative pipeline
Setting is parallel to the horizontal plane in the position 1/3-1/2 of height, storage cylinder, and angle, the range of angle are equipped between air valve and storage cylinder
For 25--45 degree, it is connected between storage cylinder and air valve by two pass joints, two pass joints include that horizontal connection portion is connected with oblique cutting
The bottom in portion, horizontal connection portion is equipped with a convex block to raise upward.
5. a kind of air filtration structure according to claim 1, it is characterised in that: upper flange and sealing cavity connect into one
Body is equipped with several bolt fixing holes along upper and lower circumference of flange, is fixed between upper and lower flange and seamless pipe by being located at bolt
Bolt in hole is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639822.9A CN109464855B (en) | 2018-12-29 | 2018-12-29 | Air filtering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639822.9A CN109464855B (en) | 2018-12-29 | 2018-12-29 | Air filtering structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109464855A true CN109464855A (en) | 2019-03-15 |
| CN109464855B CN109464855B (en) | 2024-05-03 |
Family
ID=65677961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639822.9A Active CN109464855B (en) | 2018-12-29 | 2018-12-29 | Air filtering structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109464855B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205495198U (en) * | 2015-11-30 | 2016-08-24 | 上海琅科环保设备有限公司 | Diaphragm type dust filter system |
| CN209423159U (en) * | 2018-12-29 | 2019-09-24 | 昆山博正攀巨包装设备有限公司 | A kind of air filtration structure |
-
2018
- 2018-12-29 CN CN201811639822.9A patent/CN109464855B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205495198U (en) * | 2015-11-30 | 2016-08-24 | 上海琅科环保设备有限公司 | Diaphragm type dust filter system |
| CN209423159U (en) * | 2018-12-29 | 2019-09-24 | 昆山博正攀巨包装设备有限公司 | A kind of air filtration structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109464855B (en) | 2024-05-03 |
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