[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN220850176U - Fan filter assembly convenient to dismouting is changed - Google Patents

Fan filter assembly convenient to dismouting is changed Download PDF

Info

Publication number
CN220850176U
CN220850176U CN202322746512.XU CN202322746512U CN220850176U CN 220850176 U CN220850176 U CN 220850176U CN 202322746512 U CN202322746512 U CN 202322746512U CN 220850176 U CN220850176 U CN 220850176U
Authority
CN
China
Prior art keywords
clamping
filter
groove
bead
block
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
CN202322746512.XU
Other languages
Chinese (zh)
Inventor
林华军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Qinglin Industrial Co ltd
Original Assignee
Shanghai Qinglin Industrial Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Qinglin Industrial Co ltd filed Critical Shanghai Qinglin Industrial Co ltd
Priority to CN202322746512.XU priority Critical patent/CN220850176U/en
Application granted granted Critical
Publication of CN220850176U publication Critical patent/CN220850176U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model relates to the field of fan filter assemblies, in particular to a fan filter assembly convenient to assemble, disassemble and replace, which comprises a fan filter main body, wherein an internal installation assembly is arranged in the fan filter main body, an exchangeable filter assembly is arranged in the internal installation assembly, a top filter installation assembly is arranged at the top of the internal installation assembly, and the internal installation assembly comprises a filter installation ring, an installation clamping block, a clamping connection groove, a clamping bead shrinkage groove, a clamping bead limiting spring, a clamping connection bead and a connecting bead clamping groove; according to the utility model, the internal installation assembly is arranged, so that the internal filter is more convenient to install and detach, the subsequent replacement or cleaning is more convenient, the elastic balls are used for clamping, and the elastic balls are matched with the installation clamping block for fixing, so that the stability and convenience of use are improved.

Description

Fan filter assembly convenient to dismouting is changed
Technical Field
The utility model relates to the field of fan filter assemblies, in particular to a fan filter assembly convenient to assemble, disassemble and replace.
Background
The fan filter unit is a self-powered air supply filter device, has a modularized tail end air supply device with a filtering effect, sucks air from the top and filters the air, and is widely applied to dust-free rooms, dust-free operation tables, dust-free production lines, assembled dust-free rooms, local hundred-level and other application occasions, but the fan filter unit needs to be disassembled for replacement or cleaning after long-term use, so that the fan filter unit is convenient to replace and important.
In China patent CN218544719U, the utility model relates to the technical field of fresh air machines, and discloses a fresh air machine convenient for replacing a filter assembly, which comprises a main body mechanism, a filter mechanism, a convenient-to-replace mechanism, a dehumidifying mechanism and a movable mechanism, wherein the filter mechanism is positioned in the main body mechanism, the convenient-to-replace mechanism is positioned at the right end of the filter mechanism, the dehumidifying mechanism is positioned at the right side of the convenient-to-replace mechanism, the movable mechanism is positioned at the lower end of the main body mechanism, the main body mechanism comprises a fan wall, a movable door, an air outlet, a dust screen and an inductor, the movable door is movably mounted on the upper side of the fan wall, the air outlet is fixedly mounted on the upper end of the movable door, the dust screen is fixedly arranged at the right end of the fan wall, and the inductor is fixedly mounted at the front end of the fan wall. This new fan convenient to change filter component through the installation to the mechanism of being convenient for change, has solved the problem that needs artifical dismantlement when current new fan needs to change filter component, provides convenient method of changing filter component.
The existing fan filter assembly is likely to be due to integral fixation during use, and must be replaced integrally after use, so that resource waste is caused, and the problems of insufficient convenience in replacement or poor filtering effect are solved.
Therefore, a fan filter assembly convenient to assemble, disassemble and replace is provided for the problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the utility model provides the fan filter assembly convenient to assemble, disassemble and replace in order to enable the fan filter assembly to have a better replacement effect, and solves the problems that the existing fan filter assembly is likely to be required to be replaced integrally after use due to integral fixation during use, resource waste is caused, and replacement is not convenient enough or the filter effect is poor.
The technical scheme adopted for solving the technical problems is as follows: the utility model discloses a fan filter assembly convenient to assemble, disassemble and replace, which comprises a fan filter main body, wherein an inner installation assembly is arranged in the fan filter main body, a replaceable filter assembly is arranged in the inner installation assembly, a top filter installation assembly is arranged at the top of the inner installation assembly, the inner installation assembly comprises a filter installation ring, an installation clamping block, a clamping connection groove, a clamping bead shrinkage groove, a clamping bead limit spring, clamping connection beads and a connecting bead clamping groove, the outer wall of the filter installation ring is fixedly connected with the installation clamping block, the outer wall of the installation clamping block is in clamping connection with the clamping connection groove, a clamping bead shrinkage groove is formed in the filter installation ring, a clamping bead limit spring is tightly attached to the inner part of the clamping bead shrinkage groove, a clamping connection bead is tightly attached to one side of the clamping bead limit spring, and the outer wall of the clamping connection bead is in clamping connection with the connecting bead clamping groove.
Preferably, the clamping connection beads form an elastic structure with the filter mounting ring through the clamping bead limiting springs and the clamping bead shrinkage grooves, the filter mounting ring forms a clamping structure with the clamping connection grooves through the mounting clamping blocks, and the filter mounting ring forms a clamping structure with the connection bead clamping grooves through the clamping connection beads.
Preferably, the removable filter component is including filtering intranet, block, intranet block ring, intranet block groove, block top ring, sealing connection screw thread, connecting thread groove, the bottom fixedly connected with block of filtering the intranet, and the outer wall block of block is connected with the inner network card and closes the ring, the inner network card closes the groove has been seted up at the top of filtering the intranet, and the inside block in intranet block groove is connected with the block top ring, sealing connection screw thread has been seted up to the outer wall of block top ring, and sealing connection screw thread's outer wall threaded connection has connecting thread groove.
Preferably, the clamping top ring and the connecting thread groove form a thread detachable structure through a sealing connecting thread, and the clamping top ring and the filtering inner net form a clamping structure through a clamping net block, an inner net clamping ring, an inner net clamping groove.
Preferably, the top filter installation component includes sealing connection top cap, card pearl accepting groove, card pearl push spring, spacing card pearl, spacing block groove, filter block groove, top filter, the inside of sealing connection top cap has been seted up card pearl accepting groove, and the inside of card pearl accepting groove closely laminates there is card pearl push spring, the one side of card pearl push spring closely laminates there is spacing card pearl, and the outer wall block of spacing card pearl is connected with spacing block groove, the filter block groove has been seted up to the inside of sealing connection top cap, and the inside block in filter block groove is connected with top filter.
Preferably, the limiting clamping beads form an elastic structure with the sealing connection top cover through the clamping bead accommodating grooves and the clamping bead push-out springs, the sealing connection top cover forms a clamping structure with the top filter through the limiting clamping beads and the limiting clamping grooves, and the outer diameter of the top filter is consistent with the inner diameter of the filter clamping grooves.
The utility model has the advantages that:
1. According to the utility model, the internal installation assembly is arranged, so that the internal filter is more convenient to install and detach, and is more convenient to replace or clean later, and the elastic balls are used for clamping and are matched with the installation clamping blocks for fixing, so that the stability and convenience of use are improved;
2. According to the utility model, the replaceable filter assembly is arranged, and the replaceable filter assembly is convenient to detach and replace subsequently through clamping, so that resource waste caused by integral replacement is avoided, the inner filter inner net is fixed by matching with the clamping top ring at the top, and the environmental protection performance and the detachable convenience of the filter are improved;
3. According to the utility model, the top filter mounting assembly is arranged, the tightness is improved through the tightly attached top filter, the fixity is improved through the clamping of the plurality of clamping beads, the top filter mounting assembly can be conveniently detached and replaced, and meanwhile, the integral filtering effect is improved through multiple filtering.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic perspective view of the whole section of the present utility model;
FIG. 2 is a schematic perspective view of the whole side view of the present utility model;
FIG. 3 is a schematic perspective view of the overall explosion of the present utility model;
FIG. 4 is a schematic view of a cross-sectional perspective of a fan filter body portion of the present utility model;
fig. 5 is a schematic view in partial cross-section of a top filter assembly of the present utility model.
In the figure: 1. a fan filter body; 2. an internal mounting assembly; 201. a filter mounting ring; 202. installing a clamping block; 203. a clamping connecting groove; 204. a clamping bead shrinkage groove; 205. a clamping bead limit spring; 206. clamping the connecting beads; 207. a connecting bead clamping groove; 3. a replaceable filter assembly; 301. filtering an intranet; 302. clamping the net blocks; 303. the internal network card is closed; 304. an inner network card combining groove; 305. the top ring is clamped; 306. sealing the connecting screw thread; 307. a connecting thread groove; 4. a top filter mounting assembly; 401. the top cover is connected in a sealing way; 402. a clamping bead accommodating groove; 403. a clamping bead push spring; 404. limiting clamping beads; 405. a limit clamping groove; 406. a filter engagement groove; 407. a top filter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1 to 4, a fan filter assembly convenient to disassemble and replace includes a fan filter main body 1, an inner installation assembly 2 is provided in the fan filter main body 1, a replaceable filter assembly 3 is provided in the inner installation assembly 2, a top filter installation assembly 4 is provided at the top of the inner installation assembly 2, the inner installation assembly 2 includes a filter installation ring 201, an installation clamping block 202, a clamping connection groove 203, a clamping bead shrinkage groove 204, a clamping bead limit spring 205, a clamping connection bead 206 and a connection bead clamping groove 207, the outer wall of the filter installation ring 201 is fixedly connected with the installation clamping block 202, the outer wall of the installation clamping block 202 is clamped and connected with the clamping connection groove 203, a clamping bead shrinkage groove 204 is provided in the filter installation ring 201, the clamping bead limit spring 205 is tightly attached to the inner portion of the clamping bead shrinkage groove 204, the clamping bead 206 is tightly attached to one side of the clamping bead limit spring 205, and the outer wall of the clamping connection bead 206 is clamped and connected with the connection bead clamping groove 207.
Referring to fig. 1, 3 and 4, the snap connection beads 206 form an elastic structure with the filter mounting ring 201 through the snap limit springs 205 and the snap shrinkage grooves 204, the filter mounting ring 201 forms a snap structure with the snap connection grooves 203 through the mounting snap blocks 202, and the filter mounting ring 201 forms a snap structure with the connection bead snap grooves 207 through the snap connection beads 206; the inner attachment assembly 2 is taken out together with the replaceable filter assembly 3, and the filter attachment ring 201 is pushed upward into the fan filter body 1, so that the engaging beads 206 are forced to retract into the bead-engaging grooves 204, the engaging with the bead-engaging grooves 207 is released, and the attachment engaging blocks 202 are released from the connection with the engaging grooves 203.
Referring to fig. 1 and 3, the replaceable filter assembly 3 includes a filter inner net 301, a clamping net block 302, an inner net clamping ring 303, an inner net clamping groove 304, a clamping top ring 305, a sealing connection thread 306, and a connection thread groove 307, wherein the bottom of the filter inner net 301 is fixedly connected with the clamping net block 302, the outer wall of the clamping net block 302 is clamped with the inner net clamping ring 303, the top of the filter inner net 301 is provided with the inner net clamping groove 304, the inner part of the inner net clamping groove 304 is clamped with the clamping top ring 305, the outer wall of the clamping top ring 305 is provided with the sealing connection thread 306, and the outer wall of the sealing connection thread 306 is connected with the connection thread groove 307.
Referring to fig. 1 and fig. 3, the top clamping ring 305 forms a detachable structure with the connecting thread groove 307 through the sealing connecting thread 306, and the top clamping ring 305 forms a clamping structure with the filtering inner net 301 through the clamping net block 302, the inner net clamping ring 303, the inner net clamping groove 304; the clamping top ring 305 at the bottom of the sealing connection top cover 401 is rotated to drive the sealing connection screw thread 306 to separate from the connection with the connection screw thread groove 307, meanwhile, the clamping of the inner net clamping groove 304 is lost, the clamping of the clamping top ring 305 at the top of the filtering inner net 301 in the internal installation assembly 2 is lost at the moment, the filtering inner net 301 is pushed out from the lower direction, the clamping net block 302 at the bottom of the filtering inner net 301 is separated from the connection with the inner net clamping ring 303, and the filtering inner net 301 in the interior is replaced or cleaned.
Referring to fig. 2, 3 and 5, the top filter mounting assembly 4 includes a sealing connection top cover 401, a clamping bead receiving groove 402, a clamping bead pushing spring 403, a limiting clamping bead 404, a limiting clamping groove 405, a filter clamping groove 406 and a top filter 407, wherein the clamping bead receiving groove 402 is formed in the sealing connection top cover 401, the clamping bead pushing spring 403 is tightly attached to the inner portion of the clamping bead receiving groove 402, the limiting clamping bead 404 is tightly attached to one side of the clamping bead pushing spring 403, the limiting clamping bead 404 is connected with the limiting clamping groove 405 in a clamping manner, the filter clamping groove 406 is formed in the sealing connection top cover 401, and the top filter 407 is connected with the inner clamping portion of the filter clamping groove 406 in a clamping manner.
Referring to fig. 2, 3 and 5, the limiting clamping beads 404 and the sealing connection top cover 401 form an elastic structure through the clamping bead accommodating grooves 402 and the clamping bead pushing springs 403, the sealing connection top cover 401 and the top filter 407 form a clamping structure through the limiting clamping beads 404 and the limiting clamping grooves 405, and the outer diameter of the top filter 407 is consistent with the inner diameter of the filter clamping grooves 406; the top filter 407 is forced to push outwards, the limit clamping beads 404 in the seal connection top cover 401 are contracted inwards towards the clamping bead accommodating grooves 402 under pressure, the limit clamping beads 404 press the clamping bead push-out springs 403 inwards until the limit clamping beads 404 are separated from the connection with the limit clamping grooves 405 in the top filter 407, and then the top filter 407 is pushed to be separated from the clamping with the filter clamping grooves 406, so that the top filter can be replaced or cleaned.
Working principle: firstly, the top filter mounting component 4 and the fan filter main body 1 are clamped and mounted into the fan, the fan filter main body 1 and the replaceable filter component 3 are used for multiple filtration, the filtration effect is improved, the service life is prolonged, after the subsequent service time is overlong, the fan filter main body 1 is integrally taken out, the top filter mounting component 4 at the top is firstly taken down, the clamping top ring 305 at the bottom of the sealing connection top cover 401 is rotated to drive the sealing connection screw thread 306 to separate from the connection with the connection screw thread groove 307, meanwhile, the clamping of the inner net clamping groove 304 is lost, then the top filter 407 is forced to be pushed outwards, the limiting clamping beads 404 in the sealing connection top cover 401 are contracted inwards towards the clamping bead accommodating groove 402 under pressure, the limiting clamping beads 404 inwards press the clamping bead push springs 403, until the limit clamping beads 404 are separated from the connection with the limit clamping grooves 405 in the top filter 407, then the top filter 407 is pushed to be separated from the connection with the filter clamping grooves 406, at the moment, replacement or cleaning can be carried out, then the inner mounting assembly 2 together with the replaceable filter assembly 3 is taken out, the whole filter mounting ring 201 is pushed upwards into the fan filter main body 1, the clamping connecting beads 206 are forced to shrink inwards towards the clamping bead shrinkage grooves 204 and separate from the connection with the connecting bead clamping grooves 207, the mounting clamping blocks 202 are separated from the connection with the clamping connecting grooves 203 until the whole filter mounting assembly is separated from the connection with the fan filter main body 1, the inner filter net 301 in the inner mounting assembly 2 loses the clamping of the clamping top ring 305 at the moment, the inner filter net 301 is pushed upwards from below, the clamping net blocks 302 at the bottom of the inner filter net 301 are separated from the connection with the inner net clamping rings 303, the internal filter mesh 301 is replaced or cleaned.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (6)

1. Fan filter component convenient to dismouting is changed, its characterized in that: the novel fan filter comprises a fan filter body (1), wherein an internal installation component (2) is arranged in the fan filter body (1), a replaceable filter component (3) is arranged in the internal installation component (2), and a top filter installation component (4) is arranged at the top of the internal installation component (2);
The inner mounting assembly (2) comprises a filter mounting ring (201), a mounting clamping block (202), a clamping connecting groove (203), a clamping bead shrinkage groove (204), a clamping bead limiting spring (205), clamping connecting beads (206) and a connecting bead clamping groove (207), wherein the mounting clamping block (202) is fixedly connected with the outer wall of the filter mounting ring (201), the clamping connecting groove (203) is connected with the outer wall of the mounting clamping block (202) in a clamping manner, the clamping bead shrinkage groove (204) is formed in the filter mounting ring (201), the clamping bead limiting spring (205) is tightly attached to the inner portion of the clamping bead shrinkage groove (204), the clamping connecting beads (206) are tightly attached to one side of the clamping bead limiting spring (205), and the connecting bead clamping groove (207) is connected with the outer wall of the clamping connecting beads (206).
2. The fan filter assembly of claim 1, wherein the fan filter assembly is removable and replaceable, and wherein: the clamping connection beads (206) form an elastic structure with the filter mounting ring (201) through the clamping bead limiting springs (205) and the clamping bead shrinkage grooves (204), the filter mounting ring (201) forms a clamping structure with the clamping connection grooves (203) through the mounting clamping blocks (202), and the filter mounting ring (201) forms a clamping structure with the connection bead clamping grooves (207) through the clamping connection beads (206).
3. The fan filter assembly of claim 1, wherein the fan filter assembly is removable and replaceable, and wherein: removable filter component (3) are including filtering intranet (301), block of block (302), intranet block of ring (303), intranet block groove (304), block top ring (305), sealing connection screw thread (306), connecting thread groove (307), the bottom fixedly connected with block of block (302) of filtering intranet (301), and the outer wall block of block (302) is connected with interior network card block of ring (303), interior network card block groove (304) have been seted up at the top of filtering intranet (301), and the inside block of intranet block groove (304) is connected with block top ring (305), sealing connection screw thread (306) have been seted up to the outer wall of block top ring (305), and the outer wall threaded connection of sealing connection screw thread (306) has connecting thread groove (307).
4. A fan filter assembly for facilitating disassembly and replacement as set forth in claim 3, wherein: the clamping top ring (305) and the connecting thread groove (307) form a thread detachable structure through a sealing connecting thread (306), and the clamping top ring (305) and the filtering inner net (301) form a clamping structure through a clamping net block (302), an inner net clamping ring (303) and an inner net clamping groove (304).
5. The fan filter assembly of claim 1, wherein the fan filter assembly is removable and replaceable, and wherein: the top filter installation component (4) comprises a sealing connection top cover (401), a clamping bead accommodating groove (402), a clamping bead pushing spring (403), a limiting clamping bead (404), a limiting clamping groove (405), a filter clamping groove (406) and a top filter (407), wherein the clamping bead accommodating groove (402) is formed in the sealing connection top cover (401), the clamping bead pushing spring (403) is tightly attached to the inner part of the clamping bead accommodating groove (402), the limiting clamping bead (404) is tightly attached to one side of the clamping bead pushing spring (403), the limiting clamping bead (404) is connected with the limiting clamping groove (405) in a clamping manner, the filter clamping groove (406) is formed in the sealing connection top cover (401), and the top filter (407) is connected with the inner clamping of the filter clamping groove (406).
6. The fan filter assembly of claim 5, wherein: the limiting clamping beads (404) and the sealing connection top cover (401) form an elastic structure through the clamping bead accommodating grooves (402) and the clamping bead pushing springs (403), the sealing connection top cover (401) and the top filter (407) form a clamping structure through the limiting clamping beads (404) and the limiting clamping grooves (405), and the outer diameter of the top filter (407) is consistent with the inner diameter of the filter clamping grooves (406).
CN202322746512.XU 2023-10-13 2023-10-13 Fan filter assembly convenient to dismouting is changed Active CN220850176U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322746512.XU CN220850176U (en) 2023-10-13 2023-10-13 Fan filter assembly convenient to dismouting is changed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322746512.XU CN220850176U (en) 2023-10-13 2023-10-13 Fan filter assembly convenient to dismouting is changed

Publications (1)

Publication Number Publication Date
CN220850176U true CN220850176U (en) 2024-04-26

Family

ID=90744557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322746512.XU Active CN220850176U (en) 2023-10-13 2023-10-13 Fan filter assembly convenient to dismouting is changed

Country Status (1)

Country Link
CN (1) CN220850176U (en)

Similar Documents

Publication Publication Date Title
CN220850176U (en) Fan filter assembly convenient to dismouting is changed
CN218653237U (en) Simple and convenient filter core dismouting structure
CN215842152U (en) Pharmacy is with pharmaceutical workshop air purification device filter core dismouting structure
CN215908039U (en) Air compressor machine convenient to change and filter core
CN209147310U (en) A kind of air purifier being conveniently replaceable filter core
CN212091405U (en) Combined filter material structure for dust removal filter
CN110201469B (en) Purifier filtering device and assembling and disassembling method thereof
CN208436565U (en) A kind of filtering element for air filter with quick disassembling function
CN217188507U (en) Air compressor machine air filter based on light-duty skeleton of PTFE
CN214513102U (en) Precision filter with conveniently replaced filter element
CN212680359U (en) Filter device convenient to disassemble and assemble
CN221771786U (en) Detachable industrial filter element
CN207262023U (en) oil filter
CN217613581U (en) Air cleaner filter core convenient to change
CN209405856U (en) A kind of high automatic suction mist machine of absorption efficiency
CN219888225U (en) Air compressor machine convenient to change air filter core
CN213699215U (en) High-efficiency filter
CN218392778U (en) Filter convenient to dismantle renew cartridge
CN215742095U (en) Filter core structure convenient to change clearance
CN114857722B (en) Portable air purifier with multiple filtration subassembly
CN220328293U (en) Environment-friendly active carbon filter box
CN216019285U (en) Detachable dustproof mask
CN114504899B (en) Folding sleeve type filter element
CN220884363U (en) Multifunctional rotary air drying tank
CN219308236U (en) Multi-filter-cartridge dust-removing purifier

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant