CN117211852B - Mine ventilation device for mining that ventilation efficiency is high - Google Patents
Mine ventilation device for mining that ventilation efficiency is high Download PDFInfo
- Publication number
- CN117211852B CN117211852B CN202311464844.7A CN202311464844A CN117211852B CN 117211852 B CN117211852 B CN 117211852B CN 202311464844 A CN202311464844 A CN 202311464844A CN 117211852 B CN117211852 B CN 117211852B
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- knocking
- machine body
- frame
- mine
- 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
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 45
- 238000005065 mining Methods 0.000 title claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000007664 blowing Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a mine ventilation device with high ventilation efficiency for mining, which comprises a movable frame, a ventilation mechanism and a deformation mechanism, wherein the top of the movable frame is fixedly connected with a machine body, the right side of the top of the machine body is fixedly connected with a pushing handle, the left side of the machine body is fixedly connected with a filter screen, the ventilation mechanism comprises a first fixing plate, the first fixing plate is fixedly connected to the right side in the machine body, one side of the first fixing plate, which is far away from the machine body, is fixedly connected with a protection frame, and a fan is arranged in the protection frame. According to the invention, when the movable sleeve moves to the right side, the pressing plate on the front side of the movable sleeve extrudes the air bag, so that air in the air bag is led into the knocking box through the connecting pipe frame, the pressure of the front side in the knocking box is increased, the second spring is stretched, the piston plate pushes the knocking head to knock the right side of the filter window, dust attached to the filter window can be shaken off, and dust at the filter window can be cleaned conveniently.
Description
Technical Field
The invention relates to the technical field of mine ventilation equipment, in particular to a mine ventilation device with high ventilation efficiency for mining.
Background
The mine is defined as follows: the purpose of mine ventilation is to convey fresh air in the mine, dilute and remove harmful gases and dust, regulate the underground climate, create a good working environment and ensure safe production.
Chinese patent application number CN202020733378.3 discloses a mine ventilation device for mining that ventilation efficiency is high, and this application has reached and has made mine ventilation device possess the advantage of high-efficient ventilation, but because the dust in the mine is more, under long-time use, makes the dust of air intake filter screen cloth department pile up, reduces ventilation efficiency, needs to improve to this problem.
Therefore, a mine ventilation device for mining that is highly practical in design and ensures high ventilation efficiency of the ventilation device is necessary.
Disclosure of Invention
The invention aims to provide a mine ventilation device with high ventilation efficiency for mining, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the mine ventilation device comprises a movable frame, a ventilation mechanism, a deformation mechanism and a knocking mechanism, wherein the top of the movable frame is fixedly connected with an organism, the right side of the top of the organism is fixedly connected with a pushing handle, and the left side of the organism is fixedly connected with a filter screen.
Wherein, ventilation mechanism includes:
the first fixing plate is fixedly connected to the right side in the machine body, the first fixing plate is fixedly connected with a protection frame far away from one side of the machine body, and a fan is arranged in the protection frame.
According to the technical scheme, deformation mechanism includes fixed plate two, connecting rod, electric telescopic handle, removal cover, dwang one, spring one, connecting block, swivel mount, filter window, dwang two and swivel mount, fixed plate two fixed connection is in the organism middle part, connecting rod fixed connection is in two left side middle parts of fixed plate, electric telescopic handle fixed connection is in two left sides of fixed plate, and is located the connecting rod the place ahead, remove cover fixed connection in electric telescopic handle left end, dwang one swivelling joint is in removal cover inboard, spring one fixed connection is in dwang one rear side, connecting block fixed connection is in spring one rear side, swivel mount swivelling joint is in connecting block top and bottom rear side, filter window fixed connection is in swivel mount rear side, dwang two fixed connection is in filter window rear side, swivel mount swivelling joint is in dwang two tops and bottom.
According to the technical scheme, strike the mechanism and include clamp plate, gasbag, connecting pipe support, strike case, spring two, piston board, strike head and blow the dirt pipe, clamp plate fixed connection is positive in the removal cover, gasbag fixed connection is in two left sides of fixed plate, just the gasbag is located electric telescopic handle the place ahead, connecting pipe support fixed connection is on the positive right side of gasbag, strike case fixed connection and keep away from gasbag one end in connecting pipe support, spring two fixed connection is in strike case positive inner wall, piston board fixed connection is in spring two rear ends, strike head fixed connection is in the piston board back, blow dirt pipe fixed connection in strike case right side rear end.
According to the technical scheme, the middle part of the back of the machine body is provided with the storage battery, and the storage battery is electrically connected with the fan and the electric telescopic rod, so that the fan and the electric telescopic rod can be powered.
According to the technical scheme, the rotary support frame is fixedly connected with the filter screen on one side far away from the second rotating block, and can support and fix the rotary support frame.
According to the technical scheme, the circular groove is formed in the middle of the movable sleeve, and the movable sleeve is connected with the connecting rod in a sliding manner through the circular groove, so that the movable sleeve can slide on the connecting rod.
According to the technical scheme, the first pressure valve is arranged at the bottom of the air bag, the second pressure valve is arranged at the joint of the dust blowing pipe and the knocking box, the air can enter the bottom of the air bag through the first pressure valve, and the air in the knocking box can be led out through the second pressure valve.
Compared with the prior art, the invention has the following beneficial effects: when the mine needs to be ventilated and ventilated, the fan is started, and when the fan works, the outside air is sucked through the left side of the machine body, the sucked dust is filtered, and then the dust is discharged from the right side of the machine body;
with the increase of the service time, dust sucked from the left side of the machine body is accumulated, so that dust is accumulated on the surface of a filter window at the left side of the filter screen, when the dust on the filter screen needs to be cleaned, a large outer piece of the filter screen is cleaned easily by manually using a hairbrush, then an electric telescopic rod is used for driving a movable sleeve to move on a connecting rod during working, a first rotating block on the movable sleeve rotates when the movable sleeve moves, and simultaneously a first spring is stretched, so that a second rotating block on the filter window rotates to the right side in a rotating support frame, the filter window can be lifted, and corners and gaps which are difficult to reach can be cleaned more effectively;
when the movable sleeve moves to the right side, the pressing plate on the front side of the movable sleeve extrudes the air bag, so that air in the air bag is led into the knocking box through the connecting pipe rack, the pressure of the front side in the knocking box is increased, the spring II is stretched, the piston plate pushes the knocking head to knock the right side of the filter window, dust attached to the filter window can be shaken off, and dust at the filter window can be cleaned conveniently;
after the air in the gasbag is conveyed into the knocking box through the connecting pipe frame, the pressure in the knocking box is increased, the piston plate is moved, when the pressure in the knocking box is continuously increased, the air in the knocking box is sent out through the dust blowing pipe through the pressure valve II, the air can be blown to the right side of the filter window, and the knocking of the knocking head is matched through the force of air recoil, so that the filter window is cleaned more cleanly, and the service efficiency of the device is guaranteed.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a blower of the present invention;
FIG. 3 is a schematic view of an electric telescopic rod of the present invention;
FIG. 4 is a schematic illustration of the connecting rod of the present invention;
FIG. 5 is a schematic view of the invention at a filter window;
FIG. 6 is an enlarged schematic view of FIG. 5 at A;
FIG. 7 is a schematic view of a swivel support frame of the present invention;
FIG. 8 is a schematic illustration of a knock box according to the present invention;
FIG. 9 is a schematic view of the interior of the knock box of the present invention.
In the figure: 1. a moving rack; 2. a body; 3. a pushing handle; 4. a filter screen; 5. a ventilation mechanism; 501. a first fixing plate; 502. a protective frame; 503. a blower; 6. a deformation mechanism; 601. a second fixing plate; 602. a connecting rod; 603. an electric telescopic rod; 604. a moving sleeve; 605. a first rotating block; 606. a first spring; 607. a connecting block; 608. a rotating frame; 609. a filter window; 610. a second rotating block; 611. rotating the support frame; 7. a knocking mechanism; 701. a pressing plate; 702. an air bag; 703. connecting a pipe support; 704. knocking the box; 705. a second spring; 706. a piston plate; 707. a knocking head; 708. and a dust blowing pipe.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides the following technical solutions: the mine ventilation device with high ventilation efficiency for mining comprises a movable frame 1, a ventilation mechanism 5, a deformation mechanism 6 and a knocking mechanism 7, wherein the top of the movable frame 1 is fixedly connected with a machine body 2, the right side of the top of the machine body 2 is fixedly connected with a pushing handle 3, and the left side of the machine body 2 is fixedly connected with a filter screen 4.
Wherein the ventilation mechanism 5 comprises:
the first fixing plate 501 is fixedly connected to the right side in the machine body 2, one side, away from the machine body 2, of the first fixing plate 501 is fixedly connected with the protection frame 502, and a fan 503 is arranged in the protection frame 502.
The middle part of the back of the machine body 2 is provided with a storage battery, and the storage battery is electrically connected with the fan 503, so that power can be provided for the fan 503.
When ventilation work is required for the mine, the fan 503 is turned on, and the fan 503 sucks outside air through the left side of the machine body 2 and filters sucked dust, and then discharges the dust from the right side of the machine body 2.
Referring to fig. 3-9, the present invention provides the following technical solutions: the deformation mechanism 6 comprises a second fixing plate 601, a connecting rod 602, an electric telescopic rod 603, a moving sleeve 604, a first rotating block 605, a first spring 606, a connecting block 607, a rotating frame 608, a filter window 609, a second rotating block 610 and a rotating support frame 611, wherein the second fixing plate 601 is fixedly connected to the middle part in the machine body 2, the connecting rod 602 is fixedly connected to the middle part of the left side of the second fixing plate 601, the electric telescopic rod 603 is fixedly connected to the left side of the second fixing plate 601 and is positioned in front of the connecting rod 602, the moving sleeve 604 is fixedly connected to the left end of the electric telescopic rod 603, the first rotating block 605 is rotationally connected to the inner side of the moving sleeve 604, the first spring 606 is fixedly connected to the rear side of the first rotating block 605, the connecting block 607 is fixedly connected to the rear side of the first spring 606, the rotating frame 608 is rotationally connected to the top and the rear side of the bottom of the connecting block 607, the filter window 609 is fixedly connected to the rear side of the rotating frame 608, the second rotating block 610 is fixedly connected to the rear side of the filter window 609, and the rotating support frame 611 is rotationally connected to the top and the bottom of the rotating block 610.
The knocking mechanism 7 comprises a pressing plate 701, an air bag 702, a connecting pipe frame 703, a knocking box 704, a second spring 705, a piston plate 706, a knocking head 707 and a dust blowing pipe 708, wherein the pressing plate 701 is fixedly connected to the front surface of the movable sleeve 604, the air bag 702 is fixedly connected to the left side of the second fixed plate 601, the air bag 702 is positioned in front of the electric telescopic rod 603, the connecting pipe frame 703 is fixedly connected to the right side of the front surface of the air bag 702, the knocking box 704 is fixedly connected to one end, far away from the air bag 702, of the connecting pipe frame 703, the second spring 705 is fixedly connected to the inner wall of the front surface of the knocking box 704, the piston plate 706 is fixedly connected to the rear end of the second spring 705, the knocking head 707 is fixedly connected to the back surface of the piston plate 706, and the dust blowing pipe 708 is fixedly connected to the rear end on the right side of the knocking box 704.
The middle part of the back of the machine body 2 is provided with a storage battery, and the storage battery is electrically connected with the electric telescopic rod 603, so that electric power can be provided for the electric telescopic rod 603.
The side of the rotary support frame 611 far away from the second rotary block 610 is fixedly connected with the filter screen 4, so that the rotary support frame 611 can be supported and fixed.
A circular groove is formed in the middle of the movable sleeve 604, and the movable sleeve 604 is slidably connected with the connecting rod 602 through the circular groove, so that the movable sleeve 604 can slide on the connecting rod 602.
The bottom of the air bag 702 is provided with a first pressure valve, the joint of the dust blowing pipe 708 and the knocking box 704 is provided with a second pressure valve, the air can enter the bottom of the air bag 702 by arranging the first pressure valve, and the air in the knocking box 704 can be led out by arranging the second pressure valve.
With the increase of the service time, dust sucked from the left side of the machine body 2 is accumulated, so that dust is accumulated on the surface of the filter window 609 on the left side of the filter screen 4, when the dust on the filter screen 4 needs to be cleaned, the large outer side piece is cleaned easily by manually using a brush, then the electric telescopic rod 603 is used, the electric telescopic rod 603 drives the movable sleeve 604 to move on the connecting rod 602 during working, the first rotating block 605 on the movable sleeve 604 rotates when the movable sleeve 604 moves, meanwhile, the first spring 606 is stretched, the second rotating block 610 on the filter window 609 rotates to the right side in the rotating support frame 611, the filter window 609 can be lifted, and corners and gaps which are difficult to reach can be cleaned more effectively.
When the movable sleeve 604 moves to the right, the pressing plate 701 on the front surface of the movable sleeve 604 presses the air bag 702, so that air in the air bag 702 is led into the knocking box 704 through the connecting pipe frame 703, the pressure of the front side in the knocking box 704 is increased, meanwhile, the second spring 705 is stretched, at the moment, the piston plate 706 pushes the knocking head 707 to knock the right side of the filter window 609, dust attached to the filter window 609 can be shaken off, and dust at the filter window 609 is convenient to clean.
After the air in the air bag 702 is conveyed into the knocking box 704 through the connecting pipe frame 703, the pressure in the knocking box 704 is increased, the piston plate 706 is moved, when the pressure in the knocking box 704 is continuously increased, the air in the knocking box 704 is sent out through the dust blowing pipe 708 through the pressure valve II, the air on the right side of the filtering window 609 can be blown, and the filtering window 609 is cleaned more cleanly through the force of air recoil and knocking of the knocking head 707, so that the service efficiency of the device is ensured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. Mine ventilation device is used in mining that ventilation efficiency is high, its characterized in that: the device comprises a movable frame (1), a ventilation mechanism (5), a deformation mechanism (6) and a knocking mechanism (7), wherein the top of the movable frame (1) is fixedly connected with a machine body (2), the right side of the top of the machine body (2) is fixedly connected with a pushing handle (3), and the left side of the machine body (2) is fixedly connected with a filter screen (4);
wherein the ventilation mechanism (5) comprises:
the first fixing plate (501), the first fixing plate (501) is fixedly connected to the right side in the machine body (2), one side, away from the machine body (2), of the first fixing plate (501) is fixedly connected with the protective frame (502), and a fan (503) is arranged in the protective frame (502);
the deformation mechanism (6) comprises a fixed plate II (601), a connecting rod (602), an electric telescopic rod (603), a moving sleeve (604), a rotating block I (605), a spring I (606), a connecting block (607), a rotating frame (608), a filtering window (609), a rotating block II (610) and a rotating supporting frame (611), the second fixing plate (601) is fixedly connected with the inner middle part of the machine body (2), the connecting rod (602) is fixedly connected with the middle part of the left side of the second fixing plate (601), the electric telescopic rod (603) is fixedly connected to the left side of the second fixing plate (601), and is positioned in front of the connecting rod (602), the movable sleeve (604) is fixedly connected with the left end of the electric telescopic rod (603), the first rotating block (605) is rotatably connected to the inner side of the movable sleeve (604), the first spring (606) is fixedly connected to the rear side of the first rotating block (605), the connecting block (607) is fixedly connected to the rear side of the first spring (606), the rotating frame (608) is rotatably connected with the rear sides of the top and the bottom of the connecting block (607), the filter window (609) is fixedly connected to the rear side of the rotary frame (608), the second rotating block (610) is fixedly connected to the rear side of the filtering window (609), the rotary supporting frame (611) is rotatably connected to the top and the bottom of the second rotary block (610).
2. A mine ventilation apparatus for mine with high ventilation efficiency as claimed in claim 1, wherein: the utility model provides a knocking mechanism (7) includes clamp plate (701), gasbag (702), connecting pipe support (703), knocking case (704), spring two (705), piston board (706), knocking head (707) and blows dirt pipe (708), clamp plate (701) fixed connection is in moving sleeve (604) openly, gasbag (702) fixed connection is in fixed plate two (601) left side, just gasbag (702) are located electric telescopic handle (603) the place ahead, connecting pipe support (703) fixed connection is on gasbag (702) openly right side, knocking case (704) fixed connection keeps away from gasbag (702) one end in connecting pipe support (703), spring two (705) fixed connection is in knocking case (704) openly inner wall, piston board (706) fixed connection is in spring two (705) rear end, knocking head (707) fixed connection is in piston board (706) back, blow dirt pipe (708) fixed connection is in knocking case (704) right side rear end.
3. A mine ventilation apparatus for mine with high ventilation efficiency as claimed in claim 2, wherein: the middle part of the back of the machine body (2) is provided with a storage battery, and the storage battery is electrically connected with a fan (503) and an electric telescopic rod (603).
4. A mine ventilation apparatus for mine with high ventilation efficiency as claimed in claim 3, wherein: and one side of the rotary support frame (611) far away from the second rotary block (610) is fixedly connected with the filter screen (4).
5. A mine ventilation apparatus for high ventilation efficiency as claimed in claim 4, wherein: a circular groove is formed in the middle of the movable sleeve (604), and the movable sleeve (604) is connected with the connecting rod (602) through the circular groove in a sliding mode.
6. A mine ventilation apparatus for mine with high ventilation efficiency as claimed in claim 5, wherein: the bottom of the air bag (702) is provided with a first pressure valve, and the joint of the dust blowing pipe (708) and the knocking box (704) is provided with a second pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464844.7A CN117211852B (en) | 2023-11-07 | 2023-11-07 | Mine ventilation device for mining that ventilation efficiency is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464844.7A CN117211852B (en) | 2023-11-07 | 2023-11-07 | Mine ventilation device for mining that ventilation efficiency is high |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117211852A CN117211852A (en) | 2023-12-12 |
| CN117211852B true CN117211852B (en) | 2024-03-05 |
Family
ID=89042877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311464844.7A Active CN117211852B (en) | 2023-11-07 | 2023-11-07 | Mine ventilation device for mining that ventilation efficiency is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117211852B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212838428U (en) * | 2020-02-25 | 2021-03-30 | 李瑞雪 | Ventilation unit for coal mine production |
| CN213144511U (en) * | 2020-08-10 | 2021-05-07 | 青岛亨通风管制造安装有限公司 | Ventilation unit for mine |
| CN213807744U (en) * | 2020-12-09 | 2021-07-27 | 杨凡 | Ventilation device for coal mining of coal mine |
| CN214887853U (en) * | 2021-06-25 | 2021-11-26 | 段纵 | Safe portable mine ventilation unit |
| CN216198214U (en) * | 2021-09-15 | 2022-04-05 | 黄少锋 | Mine ventilation dust collector |
-
2023
- 2023-11-07 CN CN202311464844.7A patent/CN117211852B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212838428U (en) * | 2020-02-25 | 2021-03-30 | 李瑞雪 | Ventilation unit for coal mine production |
| CN213144511U (en) * | 2020-08-10 | 2021-05-07 | 青岛亨通风管制造安装有限公司 | Ventilation unit for mine |
| CN213807744U (en) * | 2020-12-09 | 2021-07-27 | 杨凡 | Ventilation device for coal mining of coal mine |
| CN214887853U (en) * | 2021-06-25 | 2021-11-26 | 段纵 | Safe portable mine ventilation unit |
| CN216198214U (en) * | 2021-09-15 | 2022-04-05 | 黄少锋 | Mine ventilation dust collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117211852A (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106906776B (en) | A kind of intelligent multi-function formula road cleaner | |
| CN116237287A (en) | Cleaning mechanism of power supply facility | |
| CN117211852B (en) | Mine ventilation device for mining that ventilation efficiency is high | |
| CN108672399B (en) | Dust collection device for instruments and meters | |
| CN210911189U (en) | Cleaning and maintaining device for 3D printer | |
| CN206548432U (en) | A kind of dust catcher that function is swept with blowback | |
| CN106217166B (en) | Aluminium foil burr foil ash brushes machine automatically | |
| CN210631153U (en) | Vacuum cleaner with a vacuum cleaner head | |
| CN212415625U (en) | Liftable sweeping device and sweeping robot | |
| CN219095305U (en) | EVA engraving machine | |
| CN208031140U (en) | A kind of external wall dust-extraction unit | |
| CN102100506A (en) | Dust collector brush head for efficiently cleaning grilles | |
| CN213103434U (en) | Surface cleaning and dust removing device of plate feeding machine | |
| CN212489755U (en) | Big suction cyclone separation structure of dust catcher | |
| CN211633106U (en) | Rotary filter screen device of sweeping robot | |
| CN220539977U (en) | Dust collector for ventilation blower | |
| CN221717767U (en) | Three-layer co-extrusion film blowing unit | |
| CN216962290U (en) | Desktop cleaner | |
| CN212624660U (en) | LED display screen with dust collector | |
| CN219689744U (en) | Perforating machine for breathable seat leather sheath | |
| CN220779451U (en) | Environment-friendly dust treatment equipment for municipal construction | |
| CN214944400U (en) | Dust removing device | |
| CN213823897U (en) | Dust collecting equipment convenient to remove dust fast | |
| CN220005239U (en) | Portable environment-friendly dust extraction vehicle for flour mill | |
| CN219170281U (en) | Vertical machining center ray apparatus |
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 |