CN113457344A - Dustproof and ventilated glass production device - Google Patents

Dustproof and ventilated glass production device Download PDF

Info

Publication number
CN113457344A
CN113457344A CN202110761363.7A CN202110761363A CN113457344A CN 113457344 A CN113457344 A CN 113457344A CN 202110761363 A CN202110761363 A CN 202110761363A CN 113457344 A CN113457344 A CN 113457344A
Authority
CN
China
Prior art keywords
negative pressure
filter screen
dustproof
cabinet body
fixedly connected
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
Application number
CN202110761363.7A
Other languages
Chinese (zh)
Other versions
CN113457344B (en
Inventor
兰文平
任朝晖
李昱宏
陈健
孙继光
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.)
Yijun Yaoneng New Material Wuhan Co ltd
Original Assignee
Yijun Yaoneng New Material Wuhan 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 Yijun Yaoneng New Material Wuhan Co ltd filed Critical Yijun Yaoneng New Material Wuhan Co ltd
Priority to CN202110761363.7A priority Critical patent/CN113457344B/en
Publication of CN113457344A publication Critical patent/CN113457344A/en
Application granted granted Critical
Publication of CN113457344B publication Critical patent/CN113457344B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ventilation (AREA)

Abstract

The invention discloses a dustproof and ventilated glass production device which comprises a cabinet body, wherein two sides of the cabinet body are provided with connecting sealing covers. The device is simple in structure and novel in design, the connecting part of the device and the conveying line can be sealed through the shielding cloth and the sealing rings arranged on the two sides of the cabinet body, external dust is prevented from entering the negative pressure ventilation equipment through the connecting part when the device is started to work, and the dustproof effect is improved; the first filter screen, the second filter screen and the third filter screen are respectively arranged in the first mounting frame, and the fourth filter screen is arranged in the second mounting frame, so that the filter screens are convenient to replace and clean, the overhaul is convenient, and the working efficiency is improved; and through the static electricity net of exhaust vent one side fixed connection at rack body rear end inner wall, can produce electrostatic effect, increase the inside adsorption efficiency to the dust of rack body, improve the device's dustproof dust removal effect, avoid appearing the dust in the glass production process.

Description

Dustproof and ventilated glass production device
Technical Field
The invention relates to the technical field of ventilation equipment, in particular to a dustproof and ventilated glass production device.
Background
The negative pressure ventilation equipment utilizes the ventilation principle of air convection and negative pressure ventilation to quickly pump the indoor air out of the room by super strong suction force so as to form negative pressure in the room. At the same time, fresh air is sucked in from the opposite direction, the gate or the window of the installation site, and thus the fresh air is continuously replaced. In order to ensure that the surface of the glass is smooth and free of impurities in the production process, negative pressure ventilation equipment needs to be additionally arranged on production equipment to ensure that the surface of the formed glass is smooth and clean.
Traditional negative pressure ventilation equipment does not set up at the transfer chain junction and shelters from the structure, and it is inside to make external dust enter into negative pressure ventilation equipment through the junction easily when starting negative pressure ventilation equipment, reduces dustproof effect, and traditional negative pressure ventilation equipment's filter screen mounting structure is more complicated, and the dismantlement of filter screen is washd less conveniently to and traditional negative pressure ventilation equipment inside dust removal structure is more single, influences dust removal effect. We have therefore developed this and proposed a dust-and-air-tight glass production apparatus.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a dustproof and ventilated glass production device which comprises a cabinet body, wherein connecting sealing covers are arranged on two sides of the cabinet body, an observation window is arranged at the front end of the cabinet body, a control panel is arranged on one side of the bottom of the observation window at the front end of the cabinet body, a first filtering assembly is arranged at the front end of the cabinet body at the bottom of the control panel, a negative pressure fan cover is fixedly connected with the rear end of the cabinet body, a negative pressure air pipe is fixedly connected with one side of the negative pressure fan cover, the connecting sealing covers comprise installation frames, shielding cloth and sealing rings, the first filtering assembly comprises a first installation frame, a first filtering net, a second filtering net and a third filtering net, and a second filtering assembly, a support, a negative pressure motor and a negative pressure fan are arranged in the negative pressure fan cover.
As a preferred technical scheme of the present invention, one side of the mounting frame is fixedly connected to one side of the cabinet body through screws, one side of the shielding cloth is fixedly connected to one side of the mounting frame, and the other side of the shielding cloth is fixedly connected to one side of the sealing ring.
As a preferred technical scheme of the invention, the shielding cloth is made of spandex fabric with elastic performance, and the sealing ring is made of rubber.
As a preferable technical scheme, the bottom of the control panel at the front end of the cabinet body is provided with a mounting groove, the interior of the mounting groove is connected with the interior of the cabinet body in a penetrating manner, and the periphery of the first mounting frame is clamped in the mounting groove.
As a preferred technical scheme of the present invention, a plurality of limiting grooves are formed in the first mounting frame, the diameter of each limiting groove is equal to the thickness of the first filter screen, the second filter screen and the third filter screen, and two sides of each limiting groove are respectively clamped in the corresponding limiting groove.
As a preferred technical scheme of the invention, a slot is formed in one side of the negative pressure fan housing, the periphery of the second filtering component is clamped in the slot, a second mounting frame is arranged in the second filtering component, and a fourth filter screen is clamped in the second mounting frame.
As a preferred technical scheme of the present invention, the bracket is fixedly connected to one side of the second filter assembly on the inner wall of the negative pressure fan housing, one side of the negative pressure motor is fixedly connected to a central end of one side of the bracket, the negative pressure fan is disposed on the other side of the bracket, an outer periphery of an output end of the negative pressure motor is connected to a central end inside the bracket in a penetrating manner, and an output end of the negative pressure motor is fixedly connected to a central end of one side of the negative pressure fan.
According to a preferable technical scheme of the invention, an air outlet is formed in the inner wall of the rear end of the cabinet body, the interior of the air outlet is connected with the interior of the negative pressure fan housing in a penetrating manner, and a static electricity grid is fixedly connected to one side of the air outlet in the inner wall of the rear end of the cabinet body.
According to the preferable technical scheme, the top of the air outlet hole in the inner wall of the rear end of the cabinet body is fixedly connected with an illuminating lamp, and a plurality of lamp beads are arranged in the illuminating lamp.
The invention has the beneficial effects that: according to the dustproof and ventilated glass production device, the connecting part of the device and the conveying line can be sealed through the shielding cloth and the sealing rings arranged on the two sides of the cabinet body, so that external dust is prevented from entering the negative pressure ventilation equipment through the connecting part when the device is started to work, the sealing property of the connecting part of the device is improved, and the dustproof effect is improved; the first filter screen, the second filter screen and the third filter screen are respectively arranged in the first mounting frame, and the fourth filter screen is arranged in the second mounting frame, so that the filter screens are convenient to replace and clean, the overhaul is convenient, and the working efficiency is improved; and through the static electricity net of exhaust vent one side fixed connection at rack body rear end inner wall, can produce electrostatic effect, increase the inside adsorption efficiency to the dust of rack body, improve the device's dustproof dust removal effect, avoid appearing the dust in the glass production process.
Drawings
FIG. 1 is a schematic front end view of a dust-protected and ventilated glass manufacturing apparatus of the present invention;
FIG. 2 is a schematic rear end view of a dust-proof and ventilating glass manufacturing apparatus of the present invention;
FIG. 3 is a schematic illustration of a disassembled first filter assembly of a dust-proof and ventilating glass manufacturing apparatus of the present invention;
FIG. 4 is a schematic view of a disassembled structure of a negative pressure air duct of the dustproof and ventilated glass production device;
FIG. 5 is an enlarged schematic view of a first filter assembly of a dust and air protected glass manufacturing apparatus of the present invention;
FIG. 6 is a schematic view of a second filter assembly of a dust and air protected glass manufacturing apparatus of the present invention;
FIG. 7 is an enlarged schematic view at A of FIG. 4 of a dust-proof and ventilating glass manufacturing apparatus of the present invention;
FIG. 8 is a schematic front view of the inner wall of the rear end of the cabinet body of the dustproof and ventilated glass production device.
In the figure: 1. a cabinet body; 101. an observation window; 102. a control panel; 2. connecting a sealing cover; 201. a mounting frame; 202. a shielding cloth; 203. a seal ring; 3. a first filter assembly; 301. a first mounting bracket; 302. a first filter screen; 303. a second filter screen; 304. a third filter screen; 305. a limiting groove; 4. a negative pressure fan cover; 401. a support; 402. a negative pressure motor; 403. a negative pressure fan; 5. a negative pressure air pipe; 6. a second filter assembly; 601. a second mounting bracket; 602. a fourth filter screen; 7. a static grid; 8. an illuminating lamp.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1 to 8, the dustproof and ventilated glass production device of the present invention includes a cabinet body 1, wherein two sides of the cabinet body 1 are both provided with a connecting seal cover 2, the front end of the cabinet body 1 is provided with an observation window 101, one side of the bottom of the observation window 101 at the front end of the cabinet body 1 is provided with a control panel 102, the front end of the cabinet body 1 at the bottom of the control panel 102 is provided with a first filter assembly 3, the rear end of the cabinet body 1 is fixedly connected with a negative pressure fan housing 4, one side of the negative pressure fan housing 4 is fixedly connected with a negative pressure air duct 5, the connecting seal cover 2 includes an installation frame 201, a shielding cloth 202 and a seal ring 203, the first filter assembly 3 includes a first installation frame 301, a first filter screen 302, a second filter screen 303 and a third filter screen 304, and a second filter assembly 6, a support 401, a negative pressure motor 402 and a negative pressure fan 403 are arranged inside the negative pressure fan housing 4.
Wherein, installation frame 201 one side and 1 one side of rack body are through screw fixed connection, shield cloth 202 one side and 201 one side fixed connection of installation frame, and shield cloth 202 opposite side and sealing washer 203 one side fixed connection, shield cloth 202 and sealing washer 203 through setting up and can seal the device and the junction of transfer chain, outside dust enters into negative pressure ventilation equipment inside through the junction when avoiding starting the device, improve the leakproofness of the device junction, promote dustproof effect, and installation and the dismantlement of installing cover 2 are conveniently connected through the installation frame 201 that sets up.
Wherein, shielding cloth 202 is the spandex surface fabric that has elastic property, and sealing washer 203 is the rubber material, through shielding cloth 202 for the spandex surface fabric that has elastic property, can make to shield cloth 202 and have good ductility, conveniently wraps up the transfer chain to and be the rubber material through sealing washer 203, conveniently seal up the junction, improve the intensity of junction.
Wherein, the mounting groove has been seted up to the control panel 102 bottom of 1 front end of rack body, the inside and 1 inside through connection of rack body of mounting groove, and first mounting bracket 301 periphery in the inside joint of mounting groove, conveniently install and dismantle first filter screen 302, second filter screen 303 and third filter screen 304 through the first mounting bracket 301 that sets up, conveniently wash and change.
Wherein, a plurality of spacing grooves 305 have been seted up to first mounting bracket 301 is inside, a plurality of spacing groove 305 diameters and first filter screen 302, second filter screen 303 and third filter screen 304 thickness equal, and first filter screen 302, second filter screen 303 and third filter screen 304 both sides respectively with the inside joint of a plurality of spacing grooves 305, through a plurality of spacing grooves 305 that set up, make things convenient for first filter screen 302, second filter screen 303 and third filter screen 304 carry out the joint, improve the structural strength of junction, and through the first filter screen 302 that sets up, second filter screen 303 and third filter screen 304, can improve the filtration degree to outside air, realize multi-stage filtration, make the inside air of getting into the device cleaner.
Wherein, the slot has been seted up to 4 one sides of negative pressure fan housing, 6 peripheries of second filtering component are in the inside joint of slot, and the inside second mounting bracket 601 that is provided with of second filtering component 6, the inside joint of second mounting bracket 601 has fourth filter screen 602, make things convenient for the installation and the dismantlement of second filtering component 6 through the second mounting bracket 601 that sets up, improve the device filtering component's dismantlement convenience, be convenient for wash and change, and fourth filter screen 602 through the setting can filter the inside air current of the device, the convenient impurity to the device inside filters the collection, it is cleaner to make through 5 exhanst gas flows of negative-pressure air duct, place and pollute all ring edge borders.
Wherein, support 401 is in 6 one side fixed connection of second filtering component of 4 inner walls of negative pressure fan housing, negative pressure motor 402 one side and support 401 one side central point fixed connection, negative pressure fan 403 sets up in support 401 opposite side, and negative pressure motor 402's output periphery and the inside central point through connection of support 401, negative pressure motor 402's output and negative pressure fan 403 one side central point fixed connection, negative pressure fan 403 can be driven through the negative pressure motor 402 who sets up and rotate, bleed inside the device, make the inside negative pressure state that presents of the device, avoid the inside dust of the device to bond with glass, the cleanliness factor on glass surface of the shaping of production improves.
Wherein, the exhaust vent has been seted up to 1 rear end inner wall of rack body, the inside and the inside through connection of negative pressure fan housing 4 of exhaust vent, and the exhaust vent one side fixedly connected with electrostatic net 7 of 1 rear end inner wall of rack body can produce electrostatic effect through electrostatic net 7 that sets up, increases the inside adsorption efficiency to the dust of the device, improves the dustproof dust removal effect of the device.
Wherein, the exhaust vent top fixedly connected with light 8 of 1 rear end inner wall of rack body, 8 inside lamp pearls that are provided with of light, the light 8 through setting up makes things convenient for the device internally mounted's equipment to throw light on, is convenient for observe the inside behavior of the device at the staff.
The working principle is as follows: when the device works, firstly, glass production equipment is installed inside the cabinet body 1, conveying lines matched with the production equipment are respectively installed on two sides of the production equipment and penetrate through two sides of the cabinet body 1, then the joints between the two sides of the cabinet body 1 and the conveying lines are covered by the connecting sealing cover 2, the device is started through the control panel 102, at the moment, glass enters the cabinet body 1 through one side of the cabinet body 1 and is processed by the production equipment, and then the glass is output through the other side of the cabinet body 1, during the period, the negative pressure motor 402 drives the negative pressure fan 403 to rotate at high speed, so that the inside of the cabinet body 1 forms a negative pressure state, outside air flow enters the cabinet body 1 through the first filtering component 3 to complete primary dust removal, and then secondary dust removal is carried out on the air flow inside the cabinet body 1 through the static electricity grid 7 arranged inside the cabinet body 1, the air flow in the cabinet body 1 is kept clean, then the air flow in the cabinet body 1 passes through the second filtering component 6 and is discharged along with the negative pressure air pipe 5, the shielding cloth 202 and the sealing ring 203 can seal the joint of the device and the conveying line, external dust is prevented from entering the negative pressure ventilation equipment through the joint when the device is started, the sealing performance of the joint of the device is improved, the dustproof effect is improved, the negative pressure motor 402 can drive the negative pressure fan 403 to rotate to suck air in the device, the negative pressure state is realized in the device, the dust in the device is prevented from being bonded with glass, the cleanliness of the surface of the glass which is molded in production is improved, the electrostatic net 7 can generate the electrostatic effect, the adsorption capacity of the device to the dust is improved, the dustproof and dedusting effect of the device is improved, and the illuminating lamp 8 is convenient for lighting of the equipment installed in the device, the working condition inside the device can be observed conveniently by workers.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a glass apparatus for producing of dustproof ventilation, includes rack body (1), a serial communication port, rack body (1) both sides all are provided with connects sealed cowling (2), rack body (1) front end is provided with observation window (101), just rack body (1) front end observation window (101) bottom one side is provided with control panel (102), just control panel (102) bottom rack body (1) front end is provided with first filtering component (3), rack body (1) rear end fixedly connected with negative pressure fan housing (4), negative pressure fan housing (4) one side fixedly connected with negative pressure tuber pipe (5), connect sealed cowling (2) including installation frame (201), shield cloth (202) and sealing washer (203), first filtering component (3) include first mounting bracket (301), first filter screen (302), The second filter screen (303) and the third filter screen (304), the second filter component (6), the bracket (401), the negative pressure motor (402) and the negative pressure fan (403) are arranged in the negative pressure fan cover (4).
2. The dustproof and ventilated glass production device according to claim 1, wherein one side of the mounting frame (201) is fixedly connected with one side of the cabinet body (1) through screws, one side of the shielding cloth (202) is fixedly connected with one side of the mounting frame (201), and the other side of the shielding cloth (202) is fixedly connected with one side of the sealing ring (203).
3. The dustproof and ventilated glass production device according to claim 1, wherein the shielding cloth (202) is made of spandex fabric with elastic performance, and the sealing ring (203) is made of rubber.
4. The dustproof and ventilated glass production device according to claim 1, wherein a mounting groove is formed in the bottom of the control panel (102) at the front end of the cabinet body (1), the inside of the mounting groove is connected with the inside of the cabinet body (1) in a penetrating manner, and the periphery of the first mounting frame (301) is clamped in the mounting groove.
5. The dustproof and ventilated glass production device according to claim 1, wherein a plurality of limiting grooves (305) are formed in the first mounting frame (301), the diameter of each limiting groove (305) is equal to the thickness of the first filter screen (302), the second filter screen (303) and the third filter screen (304), and two sides of each first filter screen (302), the second filter screen (303) and the third filter screen (304) are respectively clamped in the limiting grooves (305).
6. The dustproof and ventilated glass production device according to claim 1, wherein a slot is formed in one side of the negative pressure fan cover (4), the periphery of the second filtering component (6) is clamped in the slot, a second mounting frame (601) is arranged in the second filtering component (6), and a fourth filter screen (602) is clamped in the second mounting frame (601).
7. The dustproof and ventilated glass production device according to claim 1, wherein the support (401) is fixedly connected with one side of the second filtering component (6) on the inner wall of the negative pressure fan housing (4), one side of the negative pressure motor (402) is fixedly connected with the central end of one side of the support (401), the negative pressure fan (403) is arranged on the other side of the support (401), the periphery of the output end of the negative pressure motor (402) is in through connection with the central end inside the support (401), and the output end of the negative pressure motor (402) is fixedly connected with the central end of one side of the negative pressure fan (403).
8. The dustproof and ventilated glass production device according to claim 1, wherein an air outlet is formed in the inner wall of the rear end of the cabinet body (1), the inside of the air outlet is connected with the inside of the negative pressure fan housing (4) in a penetrating manner, and a static electricity grid (7) is fixedly connected to one side of the air outlet of the inner wall of the rear end of the cabinet body (1).
9. The dustproof and ventilated glass production device according to claim 7, wherein a lighting lamp (8) is fixedly connected to the top of the air outlet of the inner wall of the rear end of the cabinet body (1), and a plurality of lamp beads are arranged inside the lighting lamp (8).
CN202110761363.7A 2021-07-06 2021-07-06 Dustproof and ventilated glass production device Active CN113457344B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110761363.7A CN113457344B (en) 2021-07-06 2021-07-06 Dustproof and ventilated glass production device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110761363.7A CN113457344B (en) 2021-07-06 2021-07-06 Dustproof and ventilated glass production device

Publications (2)

Publication Number Publication Date
CN113457344A true CN113457344A (en) 2021-10-01
CN113457344B CN113457344B (en) 2022-12-02

Family

ID=77878360

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110761363.7A Active CN113457344B (en) 2021-07-06 2021-07-06 Dustproof and ventilated glass production device

Country Status (1)

Country Link
CN (1) CN113457344B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114602352A (en) * 2022-03-21 2022-06-10 湖北丰盈节能环保科技股份有限公司 Mixing arrangement based on automobile-used type glass water production that prevents frostbite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208454794U (en) * 2018-06-25 2019-02-01 佛山市粤玻实业有限公司 One kind being used for glass furnace furnace roof cooling device
CN209685583U (en) * 2018-12-05 2019-11-26 江阴泰榕光电科技有限公司 The air filtration structure and glass tempering furnace of glass tempering furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208454794U (en) * 2018-06-25 2019-02-01 佛山市粤玻实业有限公司 One kind being used for glass furnace furnace roof cooling device
CN209685583U (en) * 2018-12-05 2019-11-26 江阴泰榕光电科技有限公司 The air filtration structure and glass tempering furnace of glass tempering furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114602352A (en) * 2022-03-21 2022-06-10 湖北丰盈节能环保科技股份有限公司 Mixing arrangement based on automobile-used type glass water production that prevents frostbite

Also Published As

Publication number Publication date
CN113457344B (en) 2022-12-02

Similar Documents

Publication Publication Date Title
CN113457344B (en) Dustproof and ventilated glass production device
CN201036784Y (en) Synthetic resin power dust collecting device
CN204787163U (en) Wall body pipeline new trend device
CN106765825A (en) A kind of embedded new blower fan
CN208042388U (en) A kind of frequency converter computer room negative pressure adjustment structure
CN212987532U (en) Ventilation structure of elevator
CN212999106U (en) Air purification control equipment based on combination formula real-time supervision
CN108844169A (en) One kind being used for sterile indoor dilution air plant
CN211864264U (en) Purifying and dustproof device for textile machinery control box
CN210320590U (en) High-efficiency filter for dust-free room
CN207546949U (en) A kind of energy saving white rice grader
CN208465504U (en) A kind of high-altitude haze purification device for street lamp
CN216080235U (en) Hundred-level laminar flow hood
CN206507883U (en) A kind of modified dust catcher filter mantle
CN107200306B (en) A kind of oxygenerator guard system facilitating installation
CN221098923U (en) Sealed air filter
CN105972698A (en) Air purifier mounted on ceiling
CN218358099U (en) Filter device for building energy-saving air conditioner
CN212901863U (en) Ventilation unit of dismouting filter screen of being convenient for building
CN218645701U (en) Built-in air conditioner filtering structure of fresh air handling unit
CN211372702U (en) Building intelligent control breather
CN219964948U (en) Sterile purification workbench
CN212214924U (en) Air exhaust device for compact spinning
CN220335448U (en) Sewing machine
CN210448499U (en) A high-efficient air cleaner of alarm type for clean factory building

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant