CN113334640A - System for crushing and classifying waste tires - Google Patents
System for crushing and classifying waste tires Download PDFInfo
- Publication number
- CN113334640A CN113334640A CN202110618719.1A CN202110618719A CN113334640A CN 113334640 A CN113334640 A CN 113334640A CN 202110618719 A CN202110618719 A CN 202110618719A CN 113334640 A CN113334640 A CN 113334640A
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- CN
- China
- Prior art keywords
- crushing
- roller
- electromagnetic
- fragments
- rotary
- 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.)
- Pending
Links
- 239000010920 waste tyre Substances 0.000 title claims abstract description 21
- 239000012634 fragment Substances 0.000 claims abstract description 51
- 238000001179 sorption measurement Methods 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0268—Separation of metals
- B29B2017/0272—Magnetic separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a system for crushing and classifying waste tires, which comprises a shell, a roller crushing device, a rotary crushing device, an objective table, a cooling and blowing device, an electromagnetic adsorption device, a rubber collecting box and a metal collecting box, wherein the roller crushing device is arranged on the shell; the method is characterized in that: the roller crushing device and the rotary crushing device are arranged in the shell; the top and the bottom of the shell are respectively provided with a feeding hole and a discharging hole, the roller crushing device is arranged above the rotary crushing device, and the roller crushing device is used for crushing waste tires for the first time; the rotary crushing device is used for crushing the tire fragments subjected to the primary crushing for the second time; discharging the tire fragments crushed for the second time from a discharge hole; the objective table is positioned below the discharge hole, and the cooling and blowing device and the electromagnetic adsorption device are oppositely arranged on the left side and the right side of the objective table; the cooling and blowing device is used for air cooling the tire fragments discharged from the discharge port, and the electromagnetic adsorption device is used for electromagnetically adsorbing metal fragments in the tire fragments; the invention can be widely applied to the fields of automobiles, environmental protection and the like.
Description
Technical Field
The invention relates to the field of waste tire treatment, in particular to a system for crushing and classifying waste tires.
Background
At present, a plurality of modes which are generally simple to crush are adopted for crushing waste tires, and crushed rubber blocks are large; meanwhile, when the rubber block is cut, frictional heat generation between the rubber block and the blade is not considered, so that rubber scorching can occur, and potential safety hazards are easy to occur particularly in a high-temperature environment; most of the magnetic separation is performed in a permanent magnetic mode, and the tiny steel wires after the waste tires are broken are easily adsorbed by the magnets and are difficult to take down, so that the collection difficulty is increased.
Disclosure of Invention
The invention provides a system for crushing and classifying waste tires aiming at the defects in the prior art.
The technical scheme of the invention is as follows: the utility model provides a system for carry out breakage and classification to junked tire, includes casing, cylinder breaker and rotatory breaker, objective table, cooling and blast apparatus, electromagnetic adsorption device, rubber collecting box and metal collecting box.
The method is characterized in that: the roller crushing device and the rotary crushing device are arranged in the shell; the top and the bottom of the shell are respectively provided with a feed inlet and a discharge outlet.
The roller crushing device is arranged above the rotary crushing device and is used for crushing the waste tires for the first time.
The rotary crushing device is used for crushing the tire fragments subjected to the primary crushing for the second time; and discharging the tire fragments after the second crushing from a discharge hole.
The objective table is positioned below the discharge port, and the cooling and blowing device and the electromagnetic adsorption device are oppositely arranged on the left side and the right side of the objective table.
The cooling and blowing device is used for air cooling the tire fragments discharged from the discharge hole and simultaneously cooling the tire fragments
The electromagnetic adsorption device is used for electromagnetically adsorbing metal fragments in the tire fragments, and when the electromagnetic adsorption device is powered off, the metal fragments fall into the metal collection box.
The rubber collection box is used for collecting non-metal fragments in the tire fragments.
The method comprises the following steps of carrying out secondary crushing on waste tires to crush tire rubber into small blocks; the tire is cooled and driven by the cooling and blowing device to the broken rubber blocks and metal materials, the rubber blocks are blown into the collection box of the rubber blocks and the metal materials are adsorbed by the electromagnetic adsorption device under the action of wind power, and the rubber blocks and the metal materials automatically fall into the collection box of the electromagnetic adsorption device after the electromagnetic adsorption device is powered off, so that the waste tires are automatically classified under the combined action of the wind power and the magnetic force.
According to the preferable scheme of the system for crushing and classifying the waste tires, the roller crushing device comprises a plurality of roller crushing main bodies, and a roller crushing blade is arranged on the surface of each roller crushing main body; the roller crushing main body is driven to rotate by roller shafts, all the roller shafts are connected with meshing gears, and the meshing gears drive the roller shafts to rotate; the roller crushing blades on the adjacent roller crushing main bodies are arranged in a staggered and embedded mode.
According to a preferred embodiment of the system for crushing and sorting junked tires of the present invention, the rotary crushing apparatus includes a rotary crushing blade and a rotary shaft; the rotary crushing blade is fixed on a rotary shaft, and the rotary shaft is driven by a rotary crushing driving motor; the rotary crushing blade is provided with a plurality of layers in an up-down stacking manner.
According to the preferable scheme of the system for crushing and classifying the waste tires, the electromagnetic adsorption device comprises an electromagnetic disc, a disc rotation driving motor and an electromagnetic device base; and the disc rotation driving motor is fixed on the electromagnetic device base.
When the electromagnetic disc is electrified, the electromagnetic disc performs electromagnetic adsorption on metal fragments in the tire fragments; after the adsorption is finished, the disc rotating driving motor drives the electromagnetic disc to rotate to the upper part of the metal collecting box, so that metal fragments fall into the metal collecting box after the electromagnetic disc is powered off.
The system for crushing and classifying the waste tires has the advantages that: the waste tires are crushed for the second time, which is beneficial to crushing the tires into small rubber blocks and is convenient to collect; the cooling and blowing device is arranged, so that heat generated by friction between rubber and the blade is reduced, the quality of the rubber is ensured quickly, and potential safety hazards are reduced; the invention utilizes the electromagnetic adsorption device to adsorb metal, automatically separates rubber from metal materials, and is more convenient for collecting the metal materials; the invention has simple structure and can be widely applied to the fields of automobiles, environmental protection and the like.
Drawings
Fig. 1 is a schematic diagram of a system for crushing and sorting used tires according to the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic view of a rotating crushing blade arrangement.
Fig. 4 is a schematic structural view of the base 8.
Detailed Description
Referring to fig. 1 to 4, a system for crushing and sorting junked tires comprises a shell 19, a roller crushing device, a rotary crushing device, an object stage 13, a cooling and blowing device 9, an electromagnetic adsorption device, a rubber collection box 14 and a metal collection box 15.
The roller crushing device and the rotary crushing device are arranged in the shell 19; the top and the bottom of the shell 19 are respectively provided with a feed inlet 17 and a discharge outlet 18.
The drum crushing device is arranged above the rotary crushing device and used for crushing the waste tires for the first time, and the tire fragments crushed for the first time fall onto the rotary crushing device through the material guide plate 4.
The rotary crushing device is used for crushing the tire fragments subjected to the primary crushing for the second time; the second crushed tire pieces are discharged from the discharge port 18.
The object stage 13 is positioned below the discharge port 18, and the cooling and blowing device 9 and the electromagnetic adsorption device are oppositely arranged on the left side and the right side of the object stage 13.
The cooling and blowing device 9 is used for air cooling the tire fragments discharged from the discharge hole 18, and simultaneously applies acting force to the tire fragments to push the metal fragments to be adsorbed by the electromagnetic adsorption device and push the non-metal fragments to fall into the rubber collection box 14 from the objective table 13.
The electromagnetic adsorption device performs electromagnetic adsorption on metal fragments in the tire fragments, and when the electromagnetic adsorption device is powered off, the metal fragments fall into the metal collection box 15.
The rubber collection bin 14 is used for collecting non-metal chips among the tire chips.
In a specific embodiment, the roller crushing device comprises a plurality of roller crushing bodies, and a roller crushing blade 1 is arranged on the surface of each roller crushing body; the roller crushing main body 2 is driven to rotate by roller shafts 3, all the roller shafts 3 are connected with meshing gears 16, and the meshing gears 16 drive all the roller shafts 3 to rotate; the roller crushing blades on the adjacent roller crushing main bodies are arranged in a staggered and embedded mode.
The rotary crushing device comprises a rotary crushing blade 5 and a rotary shaft 6; the rotary crushing blade 5 is fixed on a rotary shaft 6, the rotary shaft 6 is driven by a rotary crushing driving motor 7, and the rotary crushing driving motor 7 is fixed on a base 8.
In a specific embodiment, the rotary crushing blades 5 are stacked up and down to form a plurality of layers, each layer is provided with a plurality of blades, and the blades on adjacent layers are arranged in a staggered manner up and down; the blade located in the middle layer is the longest, the blade located in the uppermost layer and the blade located in the lowermost layer are the shortest, and the blades sequentially increase from top to bottom and then sequentially shorten.
The electromagnetic adsorption device comprises an electromagnetic disc 10, a disc rotation driving motor 11 and an electromagnetic device base 12; the disc rotation driving motor 11 is fixed on the electromagnetic device base 12.
When the electromagnetic disc 10 is electrified, the electromagnetic disc 10 performs electromagnetic adsorption on metal fragments in the tire fragments; when the adsorption is completed, the disc rotation driving motor 11 drives the electromagnetic disc 10 to rotate to the upper side of the metal collection box 15, so that the metal fragments fall into the metal collection box 15 after the electromagnetic disc 10 is powered off.
The working principle of the invention is as follows: the waste tires enter from the feeding hole 17, the drum crushing device is used for crushing the waste tires for the first time, and the crushed fragments fall onto the rotary crushing device through the material guide plate 4, wherein the rotary crushing device is used for crushing the tire fragments subjected to the first crushing for the second time; discharging the second crushed tyre fragments from a discharge port 18; the cooling and blowing device 9 is used for air cooling the tire fragments discharged from the discharge hole 18, and simultaneously exerts acting force on the tire fragments to push the metal fragments to be adsorbed by the electromagnetic adsorption device and push the non-metal fragments to fall into the rubber collection box 14 from the objective table 13; the electromagnetic adsorption device is used for performing electromagnetic adsorption on metal fragments in the tire fragments, and after the adsorption is completed, the disc rotating driving motor 11 drives the electromagnetic disc 10 to rotate above the metal collection box 15, so that the metal fragments fall into the metal collection box 15 after the electromagnetic disc 10 is powered off.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. A system for crushing and classifying waste tires comprises a shell (19), roller crushing devices (1, 2 and 3), a rotary crushing device, an object stage (13), a cooling and blowing device (9), electromagnetic adsorption devices (10, 11 and 12), a rubber collecting box (14) and a metal collecting box (15);
the method is characterized in that: the roller crushing device (1, 2, 3) and the rotary crushing device are arranged in a shell (19); the top and the bottom of the shell (19) are respectively provided with a feed inlet (17) and a discharge outlet (18),
the roller crushing device is arranged above the rotary crushing device and is used for crushing the waste tires for the first time;
the rotary crushing device is used for crushing the tire fragments subjected to the primary crushing for the second time; discharging the tire fragments after the second crushing from a discharge hole (18);
the objective table (13) is positioned below the discharge hole (18), and the cooling and blowing device (9) and the electromagnetic adsorption devices (10, 11, 12) are oppositely arranged on the left side and the right side of the objective table (13);
the cooling and blowing device (9) cools the tire fragments discharged from the discharge port (18) by air and simultaneously cools the tire fragments
The electromagnetic adsorption devices (10, 11 and 12) carry out electromagnetic adsorption on metal fragments in the tire fragments, and when the electromagnetic adsorption devices (10, 11 and 12) are powered off, the metal fragments fall into the metal collection box (15);
the rubber collection box (14) is used for collecting non-metal fragments in the tire fragments.
2. A system for shredding and sorting used tires according to claim 1, characterized in that: the roller crushing devices (1, 2 and 3) comprise a plurality of roller crushing main bodies, and a roller crushing blade (1) is arranged on the surface of each roller crushing main body; the roller crushing main body is driven to rotate by roller shafts (3), all the roller shafts (3) are connected with meshing gears (16), and the meshing gears (16) drive the roller shafts (3) to rotate; the roller crushing blades on the adjacent roller crushing main bodies are arranged in a staggered and embedded mode.
3. A system for shredding and sorting used tires according to claim 1, characterized in that: the rotary crushing device comprises a rotary crushing blade (5) and a rotating shaft (6); the rotary crushing blade (5) is fixed on a rotary shaft (6), and the rotary shaft (6) is driven by a rotary crushing driving motor (7); the rotary crushing blades (5) are vertically stacked with a plurality of layers.
4. A system for shredding and sorting used tires according to claim 1, characterized in that:
the electromagnetic adsorption devices (10, 11 and 12) comprise electromagnetic discs (10), disc rotation driving motors (11) and electromagnetic device bases (12); the disc rotation driving motor (11) is fixed on the electromagnetic device base (12);
when the electromagnetic disc (10) is electrified, the electromagnetic disc (10) performs electromagnetic adsorption on metal fragments in the tire fragments; after the adsorption is finished, the disc rotating driving motor (11) drives the electromagnetic disc (10) to rotate to the upper side of the metal collecting box (15), so that metal fragments fall into the metal collecting box (15) after the electromagnetic disc (10) is powered off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618719.1A CN113334640A (en) | 2021-06-03 | 2021-06-03 | System for crushing and classifying waste tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618719.1A CN113334640A (en) | 2021-06-03 | 2021-06-03 | System for crushing and classifying waste tires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113334640A true CN113334640A (en) | 2021-09-03 |
Family
ID=77473335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110618719.1A Pending CN113334640A (en) | 2021-06-03 | 2021-06-03 | System for crushing and classifying waste tires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113334640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494432A (en) * | 2023-06-20 | 2023-07-28 | 玉田县玉桥机械制造有限公司 | Broken pelletization equipment of junked tire of subsidiary cleaning function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129255A (en) * | 1997-10-27 | 1999-05-18 | Hitachi Zosen Corp | Waste plastics purifying device |
| CN207458681U (en) * | 2017-11-29 | 2018-06-05 | 清远市金运再生资源有限公司 | A kind of breaking up waste cable device |
| CN208052359U (en) * | 2018-04-10 | 2018-11-06 | 天长市协正塑业有限公司 | A kind of plastic waste grinding device |
| CN208084721U (en) * | 2018-01-25 | 2018-11-13 | 北京路德永泰环保科技有限公司 | The processing system of modifying agent |
| CN208100843U (en) * | 2018-01-22 | 2018-11-16 | 葛洲坝环嘉（大连）再生资源有限公司 | A kind of metal sorting unit |
| CN108943512A (en) * | 2018-08-07 | 2018-12-07 | 王志强 | A kind of scrap-car crushing-separating apparatus |
| CN208627408U (en) * | 2018-06-25 | 2019-03-22 | 青岛一诺橡胶机械有限公司 | A kind of multifunctional waste tire steel wire recycle device |
| CN210362068U (en) * | 2019-08-26 | 2020-04-21 | 青岛七洲橡胶有限公司 | Excess material recovery unit is used in junked tire rubber powder production |
| CN211304839U (en) * | 2019-12-20 | 2020-08-21 | 合肥海峰机械设备制造有限公司 | Gantry boring and milling machine with scrap collecting function |
-
2021
- 2021-06-03 CN CN202110618719.1A patent/CN113334640A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129255A (en) * | 1997-10-27 | 1999-05-18 | Hitachi Zosen Corp | Waste plastics purifying device |
| CN207458681U (en) * | 2017-11-29 | 2018-06-05 | 清远市金运再生资源有限公司 | A kind of breaking up waste cable device |
| CN208100843U (en) * | 2018-01-22 | 2018-11-16 | 葛洲坝环嘉（大连）再生资源有限公司 | A kind of metal sorting unit |
| CN208084721U (en) * | 2018-01-25 | 2018-11-13 | 北京路德永泰环保科技有限公司 | The processing system of modifying agent |
| CN208052359U (en) * | 2018-04-10 | 2018-11-06 | 天长市协正塑业有限公司 | A kind of plastic waste grinding device |
| CN208627408U (en) * | 2018-06-25 | 2019-03-22 | 青岛一诺橡胶机械有限公司 | A kind of multifunctional waste tire steel wire recycle device |
| CN108943512A (en) * | 2018-08-07 | 2018-12-07 | 王志强 | A kind of scrap-car crushing-separating apparatus |
| CN210362068U (en) * | 2019-08-26 | 2020-04-21 | 青岛七洲橡胶有限公司 | Excess material recovery unit is used in junked tire rubber powder production |
| CN211304839U (en) * | 2019-12-20 | 2020-08-21 | 合肥海峰机械设备制造有限公司 | Gantry boring and milling machine with scrap collecting function |
Non-Patent Citations (1)
| Title |
|---|
| 李文林等: "《钳工实用技术问答》", 30 June 2001, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494432A (en) * | 2023-06-20 | 2023-07-28 | 玉田县玉桥机械制造有限公司 | Broken pelletization equipment of junked tire of subsidiary cleaning function |
| CN116494432B (en) * | 2023-06-20 | 2023-08-29 | 玉田县玉桥机械制造有限公司 | Broken pelletization equipment of junked tire of subsidiary cleaning function |
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Application publication date: 20210903 |
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| RJ01 | Rejection of invention patent application after publication |