CN114769265A - Rock wool processing dust collection device - Google Patents
Rock wool processing dust collection device Download PDFInfo
- Publication number
- CN114769265A CN114769265A CN202210584776.7A CN202210584776A CN114769265A CN 114769265 A CN114769265 A CN 114769265A CN 202210584776 A CN202210584776 A CN 202210584776A CN 114769265 A CN114769265 A CN 114769265A
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- Prior art keywords
- box
- rock wool
- recovery box
- recovery
- electric telescopic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/04—Stationary flat screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention relates to the technical field of rock wool dust collection, and discloses a rock wool processing dust collection device. Can scrape the rock wool silk on the screen cloth through first scraper blade and retrieve in the first recovery box that sets up in the first recovery box, utilize third electric telescopic handle's work simultaneously can make the clamp plate descend, can compress tightly the rock wool silk of collecting like this to retrieve.
Description
Technical Field
The invention relates to the technical field of rock wool dust collection, in particular to a rock wool processing dust collection device.
Background
The rock wool products all adopt high-quality basalt, dolomite and the like as main raw materials, are melted at high temperature of 1450 ℃, are subjected to high-speed centrifugation by adopting an international advanced four-axis centrifuge to form fibers, are sprayed with a certain amount of adhesive, dustproof oil and water repellent, are collected by a cotton collecting machine, are subjected to a pendulum process, are laid by a three-dimensional method and then are solidified and cut to form rock wool products with different specifications and purposes, waste materials can be generated during rock wool processing, the waste materials comprise rock wool particles or fibrous rock wool filaments, and the waste materials can bring serious harm to the environment and the health of production personnel, so the rock wool products need to be collected.
Chinese patent discloses a dust collecting device for rock wool processing (publication No. CN 112452540A), which can effectively collect the technical effects of granular rock wool grains or fibrous rock wool yarns, wherein the main component of rock wool is silicon dioxide, and the silicon dioxide is easy to be positively charged, the invention utilizes the characteristic that a feeding pipe is arranged for conveying the waste air in rock wool production, a conveying belt is arranged for conveying the granular waste in the waste air from the feeding pipe into a material receiving box II, and the fibrous waste is adsorbed on one surface of the conveying belt close to a discharge port under the control of a magnetic field generator and is scraped into the material receiving box I when passing through a scraping plate, thereby finally realizing the technical effect of effectively collecting the granular rock wool grains or the fibrous rock wool yarns, but the invention can not improve the screening efficiency during screening and can not compact the recycled rock wool yarns, subsequent processing of being not convenient for like this, also can't improve its unloading speed when handling the rock wool grain simultaneously. Therefore, the technical personnel in the field provide a rock wool processing dust collecting device to solve the problems in the background art.
Disclosure of Invention
The invention aims to provide a rock wool processing dust collecting device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a rock wool processing dust collecting device comprises a collecting box, wherein a collecting opening is formed in the upper surface of the collecting box, a first recovery box is installed on one side of the collecting box, a first recovery box is installed on the front surface of the first recovery box in a sliding mode, a pressing plate is arranged above the first recovery box inside the first recovery box, air outlet pipes are symmetrically arranged on one side of the collecting box below the first recovery box, a second recovery box is arranged on the other side of the collecting box, a first box door is hinged to the front surface of the collecting box, a second box door is hinged to the front surface of the second recovery box, a second recovery box is arranged inside the second recovery box in a sliding mode, a screen is arranged inside the collecting box, a first movable plate is arranged above the screen inside the collecting box, a blanking plate is arranged below the screen inside the collecting box, and a fan is arranged below the blanking plate inside the collecting box, an air inlet is formed in the upper surface of the blanking plate, and a second moving plate is arranged above the blanking plate.
As a still further scheme of the invention: the inner side of the collecting box is symmetrically provided with first electric telescopic rods, the telescopic ends of the first electric telescopic rods are connected to one side of the first movable plate, and the lower surface of the first movable plate is symmetrically provided with mounting rods.
As a still further scheme of the invention: the lower surface of the first moving plate is symmetrically provided with second electric telescopic rods on one side of the first scraper blade, and the telescopic ends of the second electric telescopic rods are connected with the first scraper blade.
As a still further scheme of the invention: first slide rails are arranged on two sides of the collecting box below the first electric telescopic rods, and first sliding grooves which slide mutually with the first slide rails are formed in two sides of the screen.
As a still further scheme of the invention: a second discharge hole is formed in the position, close to the first recovery box, of one side of the collection box, and a second feed inlet communicated with the second discharge hole is formed in one side of the first recovery box.
As a still further scheme of the invention: the inside upper surface of first collection box is provided with third electric telescopic handle, the upper surface of clamp plate is provided with the adapter sleeve, the inside of adapter sleeve is embedded into to third electric telescopic handle's flexible end.
As a still further scheme of the invention: the both sides symmetry of first recovery box is provided with the second slide rail, the inboard of first recovery box is seted up the second spout that slides each other with the second slide rail.
As a still further scheme of the invention: the inner side of the collecting box is symmetrically provided with fourth electric telescopic rods, the telescopic ends of the fourth electric telescopic rods are connected to one side of the second moving plate, the lower surface of the second moving plate is provided with a cleaning brush, and a second scraper is arranged on one side of the cleaning brush on the lower surface of the second moving plate.
As a still further scheme of the invention: a first discharging opening is formed in one side of the collecting box above the second moving plate, and a first feeding opening communicated with the first discharging opening is formed in one side of the second recycling box.
As a still further scheme of the invention: the inside of the second recovery box is provided with a second recovery box in a sliding manner, a filter screen is arranged inside the second recovery box, a third sliding rail is symmetrically arranged on the lower surface of the second recovery box, and a third sliding groove which slides mutually with the third sliding rail is formed inside the second recovery box.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can lead the dust to enter the collecting box from the collecting port through the work of the fan, and can screen the entering dust through the screen, thus the fibrous rock wool in the dust can be kept on the screen, and the rock wool particles can fall on the blanking plate arranged in the collecting box, and simultaneously the first moving plate can move on the screen through the work of the first electric telescopic rod, thus the rock wool on the screen can be dispersed by the mounting rod, the rock wool particles can be better separated from the rock wool, and the first scraper can descend through the work of the second electric telescopic rod during the collection, thus the rock wool on the screen can be scraped into the first recovery box arranged in the first recovery box for recovery through the first scraper under the work of the first electric telescopic rod, and simultaneously the pressure plate can descend through the work of the third electric telescopic rod, the collected rock wool wires can be compressed for subsequent recovery, the automatic operation can be realized, the screening effect can be improved, and the rock wool wires can be rapidly recovered;
2. by utilizing the inclined arrangement of the blanking plate, rock wool particles can rapidly enter the second recovery box from the first discharge port and the first feed port, meanwhile, the second moving plate can move above the blanking plate by utilizing the work of the fourth electric telescopic rod, the lower surface of the blanking plate is provided with the cleaning brush and the second scraper plate, so that rock wool particles on the blanking plate can be quickly cleaned, and meanwhile, the phenomenon that the working efficiency is influenced due to the blockage of the air inlet hole can be avoided, a second recovery box is arranged in the second recovery box, a filter screen is arranged in the second recovery box, thus, the rock wool particles entering the second recovery box can be screened and recovered, thereby facilitating the subsequent treatment, this set up automatic recovery, can be quick carry out recovery processing with the rock wool grain to can improve its recovery efficiency through clearance brush and second scraper blade.
Drawings
Fig. 1 is a schematic structural view of a rock wool processing dust collecting device;
FIG. 2 is a schematic view of the internal structure of a collecting box of the rock wool processing dust collecting apparatus;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view showing the internal structure of a first recycling bin of a dust collecting apparatus for rock wool processing;
FIG. 5 is an enlarged view of portion C of FIG. 4;
FIG. 6 is an enlarged view of portion B of FIG. 2;
fig. 7 is a schematic view of the internal structure of a second recycling bin in a rock wool processing dust collecting device.
In the figure: 1. a collection port; 2. a collection box; 3. a first recovery tank; 4. a first recovery box; 5. an air outlet pipe; 6. a first door; 7. a second recovery tank; 8. a second door; 9. a first moving plate; 10. a first discharge port; 11. screening a screen; 12. an air inlet; 13. a fan; 14. a first electric telescopic rod; 15. a second electric telescopic rod; 16. a first slide rail; 17. mounting a rod; 18. a first squeegee; 19. a first chute; 20. pressing a plate; 21. connecting sleeves; 22. a third electric telescopic rod; 23. a second discharge opening; 24. a second chute; 25. a second slide rail; 26. a blanking plate; 27. cleaning a brush; 28. a fourth electric telescopic rod; 29. a second moving plate; 30. a second squeegee; 31. a first feed port; 32. a filter screen; 33. a second recovery box; 34. a third slide rail; 35. a second feed inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 7, in an embodiment of the present invention, a rock wool processing dust collecting device includes a collecting box 2, a collecting port 1 is disposed on an upper surface of the collecting box 2, a first recycling box 3 is mounted on one side of the collecting box 2, a first recycling box 4 is slidably mounted on a front surface of the first recycling box 3, second sliding rails 25 are symmetrically disposed on two sides of the first recycling box 4, a second sliding groove 24 sliding with the second sliding rail 25 is disposed on an inner side of the first recycling box 3, a pressing plate 20 is disposed above the first recycling box 4 inside the first recycling box 3, a screen 11 is disposed inside the collecting box 2, first sliding rails 16 are disposed below a first electric telescopic rod 14 on two sides of the collecting box 2, first sliding grooves 19 sliding with the first sliding rails 16 are disposed on two sides of the screen 11, and a first moving plate 9 is disposed above the screen 11 inside the collecting box 2, the inner side of the collecting box 2 is symmetrically provided with first electric telescopic rods 14, the telescopic end of each first electric telescopic rod 14 is connected to one side of a first movable plate 9, the lower surface of the first movable plate 9 is symmetrically provided with mounting rods 17, the lower surface of the first movable plate 9 is symmetrically provided with second electric telescopic rods 15 at one side of a first scraper 18, the telescopic end of each second electric telescopic rod 15 is connected with the first scraper 18, one side of the collecting box 2 close to the first recovery box 3 is provided with a second discharge hole 23, one side of the first recovery box 3 is provided with a second feed hole 35 communicated with the second discharge hole 23, the upper surface of the inner part of the first recovery box 3 is provided with a third electric telescopic rod 22, the upper surface of the press plate 20 is provided with a connecting sleeve 21, and the telescopic end of the third electric telescopic rod 22 is embedded into the connecting sleeve 21, so that dust can enter the collecting box 2 from the collecting port 1 through the operation of the fan 13, the entered dust can be screened by the screen 11, so that fibrous rock wool in the dust can be retained on the screen 11, the rock wool particles can fall onto a blanking plate 26 arranged in the collecting box 2, meanwhile, the first movable plate 9 can move on the screen 11 by the operation of the first electric telescopic rod 14, so that the rock wool on the screen 11 can be dispersed by the mounting rod 17 so as to better separate the rock wool particles from the rock wool, and the first scraper 18 can descend by the operation of the second electric telescopic rod 15 during collection, so that the rock wool on the screen 11 can be scraped into the first recovery box 4 arranged in the first recovery box 3 by the first scraper 18 under the operation of the first electric telescopic rod 14 for recovery, and meanwhile, the pressing plate 20 can descend by the operation of the third electric telescopic rod 22 so as to compress the collected rock wool, so that subsequent recovery should set up automatic operation, can improve the screening effect to can be with the quick recovery processing of rock wool silk.
In fig. 1, 2, 6 and 7: an air outlet pipe 5 is symmetrically arranged on one side of the collecting box 2 below the first recovery box 3, a second recovery box 7 is arranged on the other side of the collecting box 2, a first box door 6 is hinged on the front surface of the collecting box 2, a second box door 8 is hinged on the front surface of the second recovery box 7, a second recovery box 33 is arranged in the second recovery box 7 in a sliding manner, a blanking plate 26 is arranged in the collecting box 2 below the screen mesh 11, a fan 13 is arranged in the collecting box 2 below the blanking plate 26, an air inlet hole 12 is arranged on the upper surface of the blanking plate 26, a second moving plate 29 is arranged above the blanking plate 26, fourth electric telescopic rods 28 are symmetrically arranged on the inner side of the collecting box 2, the telescopic ends of the fourth electric telescopic rods 28 are connected to one side of the second moving plate 29, a cleaning brush 27 is arranged on the lower surface of the second moving plate 29, and a second scraper 30 is arranged on one side of the cleaning brush 27 on the lower surface of the second moving plate 29, a first discharge port 10 is arranged above a second moving plate 29 on one side of the collection box 2, a first feed port 31 communicated with the first discharge port 10 is arranged on one side of a second recovery box 7, a second recovery box 33 is arranged in the second recovery box 7 in a sliding manner, a filter screen 32 is arranged in the second recovery box 33, third slide rails 34 are symmetrically arranged on the lower surface of the second recovery box 33, a third slide groove mutually sliding with the third slide rails 34 is arranged in the second recovery box 7 in a sliding manner, rock wool particles can rapidly enter the second recovery box 7 from the first discharge port 10 and the first feed port 31 by utilizing the inclined arrangement of the blanking plate 26, meanwhile, the second moving plate 29 can move above the blanking plate 26 by utilizing the work of a fourth electric telescopic rod 28, a cleaning brush 27 and a second scraper 30 are arranged on the lower surface of the blanking plate 26, so that the rock wool particles on the blanking plate 26 can be rapidly cleaned, also can avoid simultaneously that inlet port 12 to take place to block up and influence work efficiency, it retrieves box 33 to be provided with the second in the inside of second collection box 7, and the inside of second recovery box 33 is provided with filter screen 32, can retrieve the rock wool grain that box 33 inside was retrieved to the second entering into like this and screen and retrieve, thereby subsequent processing of being convenient for, should set up automatic the recovery, can be quick carry out recovery processing with the rock wool grain, and can improve its recovery efficiency through clearance brush 27 and second scraper blade 30.
The working principle of the invention is as follows: when the dust collector is used, through the work of the fan 13 arranged inside the collecting box 2, dust can enter the collecting box 2 from the collecting port 1, the dust can fall into the screen 11 after entering the dust, the screen 11 is provided with the leakage holes, so that rock wool wires and rock wool particles in the dust can be separated, meanwhile, the first electric telescopic rod 14 arranged inside the collecting box 2 is used for working, the first movable plate 9 can move inside the collecting box 2, the mounting rods 17 are symmetrically arranged on the lower surface of the first movable plate 9, so that the rock wool wires and the rock wool particles on the screen 11 can be separated when the first movable plate 9 moves, the second electric telescopic rod 15 can be used after the first movable plate 9 moves, the first scraper 18 can move downwards to be in contact with the upper surface of the screen 11, and under the work of the first electric telescopic rod 14, the rock wool wires can enter the first collecting box 3 from the second discharging port 23 and the second feeding port 35 through the first scraper 18 In the first recovery box 4, after entering, the pressing plate 20 is moved downwards by the operation of the third electric telescopic rod 22, so that the rock wool filaments are pressed by the pressing plate 20, so as to facilitate the subsequent recovery treatment, and at the same time, the rock wool particles falling through the screen 11 can fall onto the lower plate 26 by the mutual sliding of the second sliding rails 25 and the second sliding grooves 24 arranged at both sides of the first recovery box 4, so that the first recovery box 4 can be taken out, and the rock wool particles fall onto the second recovery box 33 arranged in the second recovery box 7 from the first discharge port 10 and the first feed port 31, and the second recovery box 29 can be moved above the lower plate 26 by the operation of the fourth electric telescopic rod 28 arranged inside the collection box 2, and the cleaning brush 27 and the second scraper 30 are arranged on the lower surface of the lower plate 26, so that the rock wool particles on the lower plate 26 can be cleaned quickly, also can avoid simultaneously that inlet port 12 to take place to block up and influence work efficiency, it retrieves box 33 to be provided with the second in the inside of second collection box 7, and the inside of second recovery box 33 is provided with filter screen 32, can retrieve the rock wool grain that box 33 inside was retrieved to the second entering into like this and screen and retrieve, thereby subsequent processing of being convenient for, should set up automatic the recovery, can be quick carry out recovery processing with the rock wool grain, and can improve its recovery efficiency through clearance brush 27 and second scraper blade 30.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A rock wool processing dust collecting device comprises a collecting box (2) and is characterized in that a collecting opening (1) is formed in the upper surface of the collecting box (2), a first recovery box (3) is installed on one side of the collecting box (2), a first recovery box (4) is installed on the front surface of the first recovery box (3) in a sliding mode, a pressing plate (20) is arranged above the first recovery box (4) inside the first recovery box (3), air outlet pipes (5) are symmetrically arranged on one side of the collecting box (2) below the first recovery box (3), a second recovery box (7) is arranged on the other side of the collecting box (2), a first box door (6) is hinged to the front surface of the collecting box (2), a second box door (8) is hinged to the front surface of the second recovery box (7), and a second recovery box (33) is arranged inside the second recovery box (7) in a sliding mode, the novel screen cloth type dust collector is characterized in that a screen cloth (11) is arranged inside the collecting box (2), a first movable plate (9) is arranged above the screen cloth (11) inside the collecting box (2), a discharging plate (26) is arranged below the screen cloth (11) inside the collecting box (2), a fan (13) is arranged below the discharging plate (26) inside the collecting box (2), an air inlet hole (12) is formed in the upper surface of the discharging plate (26), and a second movable plate (29) is arranged above the discharging plate (26).
2. The rock wool processing dust collecting device according to claim 1, wherein first electric telescopic rods (14) are symmetrically arranged on the inner side of the collecting box (2), the telescopic ends of the first electric telescopic rods (14) are connected to one side of the first movable plate (9), and mounting rods (17) are symmetrically arranged on the lower surface of the first movable plate (9).
3. The rock wool processing dust collection device according to claim 2, wherein the lower surface of the first moving plate (9) is symmetrically provided with second electric telescopic rods (15) at one side of the first scraper (18), and the telescopic ends of the second electric telescopic rods (15) are connected with the first scraper (18).
4. The rock wool processing dust collection device according to claim 1, wherein first slide rails (16) are arranged on two sides of the collection box (2) below the first electric telescopic rod (14), and first slide grooves (19) which slide with the first slide rails (16) are formed in two sides of the screen (11).
5. The rock wool processing dust collecting device as claimed in claim 1, wherein a second discharge opening (23) is formed in one side of the collecting box (2) close to the first recycling box (3), and a second feed opening (35) communicated with the second discharge opening (23) is formed in one side of the first recycling box (3).
6. The rock wool processing dust collecting device as claimed in claim 1, wherein a third electric telescopic rod (22) is arranged on the upper surface of the interior of the first recovery box (3), a connecting sleeve (21) is arranged on the upper surface of the pressing plate (20), and a telescopic end of the third electric telescopic rod (22) is embedded into the connecting sleeve (21).
7. The rock wool processing dust collecting device as claimed in claim 1, wherein second slide rails (25) are symmetrically arranged on two sides of the first recycling box (4), and a second sliding groove (24) which slides with the second slide rails (25) is formed in the inner side of the first recycling box (3).
8. The rock wool processing dust collecting device as claimed in claim 1, wherein the inner side of the collecting box (2) is symmetrically provided with fourth electric telescopic rods (28), the telescopic ends of the fourth electric telescopic rods (28) are connected to one side of the second moving plate (29), the lower surface of the second moving plate (29) is provided with a cleaning brush (27), and the lower surface of the second moving plate (29) is provided with a second scraper (30) at one side of the cleaning brush (27).
9. The rock wool processing dust collecting device as claimed in claim 1, wherein a first discharge port (10) is formed in one side of the collecting box (2) above the second moving plate (29), and a first feed port (31) which is communicated with the first discharge port (10) is formed in one side of the second recovery box (7).
10. The rock wool processing dust collection device according to claim 1, wherein a second recovery box (33) is slidably disposed inside the second recovery box (7), a filter screen (32) is disposed inside the second recovery box (33), third slide rails (34) are symmetrically disposed on the lower surface of the second recovery box (33), and third slide grooves which slide with the third slide rails (34) are formed in the second recovery box (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584776.7A CN114769265A (en) | 2022-05-26 | 2022-05-26 | Rock wool processing dust collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584776.7A CN114769265A (en) | 2022-05-26 | 2022-05-26 | Rock wool processing dust collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114769265A true CN114769265A (en) | 2022-07-22 |
Family
ID=82408715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210584776.7A Pending CN114769265A (en) | 2022-05-26 | 2022-05-26 | Rock wool processing dust collection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114769265A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116947310A (en) * | 2023-06-28 | 2023-10-27 | 南通天福机械有限公司 | Be used for granular cotton production dust keeper |
-
2022
- 2022-05-26 CN CN202210584776.7A patent/CN114769265A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116947310A (en) * | 2023-06-28 | 2023-10-27 | 南通天福机械有限公司 | Be used for granular cotton production dust keeper |
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