CN113941396A - Solid waste crushing device - Google Patents
Solid waste crushing device Download PDFInfo
- Publication number
- CN113941396A CN113941396A CN202010738471.8A CN202010738471A CN113941396A CN 113941396 A CN113941396 A CN 113941396A CN 202010738471 A CN202010738471 A CN 202010738471A CN 113941396 A CN113941396 A CN 113941396A
- Authority
- CN
- China
- Prior art keywords
- jar body
- solid waste
- cover
- tank body
- fixed
- 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
- 239000002910 solid waste Substances 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 239000007921 spray Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 6
- 244000309464 bull Species 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001233242 Lontra Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010868 animal carcass Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010888 waste organic solvent Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
- B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/40—Detachers, e.g. scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C2018/162—Shape or inner surface of shredder-housings
Abstract
The invention provides a solid waste crushing device, which relates to the technical field of crushing devices and comprises a tank body, wherein the top of the tank body is provided with a cover, the top of the cover is provided with a jack, a spray head is embedded in the jack, a water tank is arranged in the cover and communicated with the jack, the bottom of the inner wall of the water tank is uniformly provided with a plurality of water holes, the lower ends of the water holes extend out of the cover, and a screen plate is embedded in the bottom of the cover; two rolling wheels which are distributed front and back are arranged above the inner part of the tank body, the two rolling wheels are meshed and connected, a plurality of sharp blocks are fixed on the periphery of the inner wall of the tank body, the sharp blocks are positioned below the rolling wheels, a rotating rod is arranged below the inner part of the tank body, three blades which are distributed longitudinally are fixed on the left side and the right side of the rotating rod, and sliding grooves are formed in the front side and the back side of the top of the tank body; the invention has the beneficial effects that: the crushing machine is beneficial to crushing solid wastes more thoroughly, avoids dust from coming around after the solid wastes are crushed, and can clean the rolling wheel.
Description
Technical Field
The invention relates to the technical field of crushing devices, in particular to a solid waste crushing device.
Background
The solid waste refers to solid and semi-solid waste materials generated in production, consumption, life and other activities of human beings (the definition of foreign matters is more extensive, and the waste generated in animal activities also belongs to the category), and is generally called as 'garbage'. Mainly comprises solid particles, garbage, furnace slag, sludge, waste products, damaged vessels, defective products, animal carcasses, deteriorated foods, human and animal excreta and the like. Some countries also classify high-concentration liquids such as waste acid, waste alkali, waste oil, waste organic solvent, etc. as solid waste.
Current solid waste crushing device generally carries out simple crushing processing to solid waste, hardly smashes solid waste thoroughly, and in addition, solid waste crushes the in-process and can raise the dust, and the user can inhale a large amount of dust when reinforced and the ejection of compact, is unfavorable for user's health.
Disclosure of Invention
The invention provides a solid waste crushing device which is beneficial to more thoroughly crushing solid waste, avoids dust from coming around after the solid waste is crushed, and can clean a rolling wheel so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a solid waste crushing device comprises a tank body;
the top of the tank body is provided with a cover, the top of the cover is provided with a jack, a spray head is embedded in the jack, a water tank is arranged in the cover and communicated with the jack, the bottom of the inner wall of the water tank is uniformly provided with a plurality of water holes, the lower ends of the water holes extend out of the cover, and a screen plate is embedded in the bottom of the cover;
the internal portion top of jar is equipped with two rolling wheels that are front and back distribution, two the rolling wheel meshing is connected, just jar internal wall all is fixed with a plurality of sharp pieces all around, sharp piece is located the rolling wheel below, jar internal portion below is equipped with the bull stick, the bull stick left and right sides all is fixed with three blades that are longitudinal distribution.
Preferably, the front side and the rear side of the top of the tank body are both provided with sliding grooves, the front side and the rear side of the bottom of the cover are both fixed with sliding rails, and the sliding rails are in sliding connection with the sliding grooves.
Preferably, the rolling wheels are fixed with rotating shafts inside, the rolling wheels extend from the left end and the right end of each rotating shaft, and the right ends of the rotating shafts are rotatably connected with the right sides of the inner walls of the tank bodies.
Preferably, jar body left side top is fixed with two motors that are the front and back distribution one, two the jar internal wall left side is all worn out to the pivot left end, and two the pivot left end respectively with two a motor swivelling joint.
Preferably, the bottom of the inner wall of the tank body is fixed with a guide plate, the guide plate is in a shape of being low at the left and high at the right, the bottom of the tank body is fixed with a second motor, and the lower end of the rotating rod penetrates through the bottom of the guide plate and the tank body and is connected with the upper side of the second motor in a rotating manner.
Preferably, jar body left side below is opened there is the discharge gate, the welding of jar body left side has the play hopper that corresponds with the discharge gate, it communicates with each other through discharge gate and jar body to go out the hopper, just jar body left is equipped with the case that gathers materials, it has the opening to gather materials the case right side, it passes the opening and stretches into in the case that gathers materials to go out the hopper left end.
Compared with the prior art, the invention has the beneficial effects that:
according to the solid waste crushing device, the two rotary rolling wheels can crush solid waste, the crushed solid waste can fall into the lower part of the inner part of the tank body, the rotary blades can cut the crushed solid waste to crush the solid waste, and the solid waste generates centrifugal force under the action of the power of the blades, so that the crushed solid waste can be splashed onto the sharp blocks on the inner wall of the tank body, the surfaces of the sharp blocks are sharp, and the solid waste can be crushed more thoroughly;
the shower nozzle can be sprayed water in the jack, and water can slowly gush into the basin, and last water can pass through the water hole blowout, and spun water can pass the otter board and drench on solid waste and rolling wheel, makes jar internal environment moist on the one hand, avoids solid waste to pulverize back dust four times, can wash rolling wheel simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the tank of the present invention;
FIG. 3 is a schematic bottom view of the cover of the present invention;
FIG. 4 is a schematic view of a portion of the structure of FIG. 1 according to the present invention.
The labels in the figure are: 1-tank body; 2-a lid; 3-a jack; 4-a spray head; 5-a water tank; 6-water hole; 7-screen plate; 8-rolling wheel; 9-motor one; 10-a rotating shaft; 11-a tip block; 12-motor two; 13-a deflector; 14-a rotating rod; 15-a blade; 16-a discharge hopper; 17-a material collecting box; 18-a slide rail; 19-chute.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIGS. 1-4, an embodiment of a solid waste crushing apparatus is further illustrated;
a solid waste crushing device comprises a tank body 1;
a cover 2 is arranged at the top of the tank body 1, an insertion hole 3 is formed in the top of the cover 2, a spray head 4 is embedded in the insertion hole 3, a water tank 5 is arranged inside the cover 2, the water tank 5 is communicated with the insertion hole 3, a plurality of water holes 6 are uniformly formed in the bottom of the inner wall of the water tank 5, the lower end of each water hole 6 extends out of the cover 2, and a screen plate 7 is embedded in the bottom of the cover 2;
two rolling wheels 8 which are distributed front and back are arranged above the inside of the tank body 1, the two rolling wheels 8 are meshed and connected, a plurality of sharp blocks 11 are fixed on the periphery of the inner wall of the tank body 1, the sharp blocks 11 are positioned below the rolling wheels 8, a rotating rod 14 is arranged below the inside of the tank body 1, and three blades 15 which are distributed longitudinally are fixed on the left side and the right side of the rotating rod 14;
sliding grooves 19 are formed in the front side and the rear side of the top of the tank body 1, sliding rails 18 are fixed on the front side and the rear side of the bottom of the cover 2, and the sliding rails 18 are connected with the sliding grooves 19 in a sliding mode;
a rotating shaft 10 is fixed inside each rolling wheel 8, the rolling wheels 8 extend out of the left end and the right end of each rotating shaft 10, and the right end of each rotating shaft 10 is rotatably connected with the right side of the inner wall of the tank body 1;
two motors I9 which are distributed in the front-back direction are fixed above the left side of the tank body 1, the left ends of the two rotating shafts 10 penetrate through the left side of the inner wall of the tank body 1, and the left ends of the two rotating shafts 10 are respectively in rotating connection with the two motors I9;
a guide plate 13 is fixed at the bottom of the inner wall of the tank body 1, the guide plate 13 is in a shape of being low at the left side and high at the right side, a motor II 12 is fixed at the bottom of the tank body 1, and the lower end of the rotating rod 14 penetrates through the guide plate 13 and the bottom of the tank body 1 and is rotatably connected with the upper side of the motor II 12;
a discharge hole is formed in the lower portion of the left side of the tank body 1, a discharge hopper 16 corresponding to the discharge hole is welded to the left side of the tank body 1, the discharge hopper 16 is communicated with the tank body 1 through the discharge hole, a material collecting box 17 is arranged on the left side of the tank body 1, a through hole is formed in the right side of the material collecting box 17, and the left end of the discharge hopper 16 penetrates through the through hole and extends into the material collecting box 17;
specifically, when a user needs to crush the solid waste, the user can push the cover 2 leftwards, the slide rail 18 at the bottom of the cover 2 slides in the slide groove 19 at the top of the tank 1, so that the cover 2 can be opened, then the solid waste is poured into the tank 1, and the cover 2 is covered on the top of the tank 1 again;
after that, a second motor 12 and a first motor 9 are powered on, the first motor 9 drives a rotating shaft 10 to rotate, so that two mutually meshed rolling wheels 8 rotate, the second motor 12 drives a rotating rod 14 and blades 15 to rotate together, the two rotating rolling wheels 8 can crush the solid waste, the crushed solid waste can fall into the lower part of the inside of the tank body 1, the rotating blades 15 can cut the crushed solid waste, so that the solid waste is crushed, the solid waste generates centrifugal force under the action of the power of the blades 15, so that the crushed solid waste can be splashed onto the sharp blocks 11 on the inner wall of the tank body 1, the surfaces of the sharp blocks 11 are sharp, and the solid waste is crushed more thoroughly;
the upper end of the spray head 4 is connected with a water pipe, the tail end of the water pipe is connected with a water pump, the water pumping end of the water pump is connected with a water tank, after the tank body 1 works for a period of time, the water pump is powered on, the water pump can pump water in the water tank into the water pipe, the water is introduced into the spray head 4 through the water pipe, then the spray head 4 can spray the water in the jack 3, the water can slowly flow into the water tank 5, finally the water can be sprayed out through the water holes 6, the sprayed water can penetrate through the screen plate 7 and be sprayed on the solid waste and the rolling wheel 8, on one hand, the internal environment of the tank body 1 is moist, dust is prevented from getting around after the solid waste is crushed, and meanwhile, the rolling wheel 8 can be cleaned;
the screen plate 7 can prevent solid waste from entering the water holes 6, thereby preventing the water holes 6 from being blocked;
the solid waste after being crushed for a plurality of times can fall onto the guide plate 13, and the solid waste can be guided into the discharge hopper 16 through the guide plate 13, and finally guided into the material collecting box 17 through the discharge hopper 16 to be collected.
Claims (6)
1. The utility model provides a solid waste crushing device, includes jar body (1), its characterized in that:
the water tank is characterized in that a cover (2) is arranged at the top of the tank body (1), a jack (3) is formed in the top of the cover (2), a spray head (4) is embedded in the jack (3), a water tank (5) is formed in the cover (2), the water tank (5) is communicated with the jack (3), a plurality of water holes (6) are uniformly formed in the bottom of the inner wall of the water tank (5), the lower end of each water hole (6) extends out of the cover (2), and a screen plate (7) is embedded in the bottom of the cover (2);
jar body (1) inside top is equipped with two rolling wheel (8) that are the front and back distribution, two rolling wheel (8) meshing is connected, just jar body (1) inner wall all is fixed with a plurality of sharp piece (11) all around, sharp piece (11) are located rolling wheel (8) below, jar body (1) inside below is equipped with bull stick (14), bull stick (14) the left and right sides all is fixed with three blade (15) that are longitudinal distribution.
2. The solid waste crushing apparatus as claimed in claim 1, wherein: the tank body is characterized in that sliding grooves (19) are formed in the front side and the rear side of the top of the tank body (1), sliding rails (18) are fixed on the front side and the rear side of the bottom of the cover (2), and the sliding rails (18) are connected with the sliding grooves (19) in a sliding mode.
3. The solid waste crushing apparatus as claimed in claim 1, wherein: the utility model discloses a jar body (1) is characterized in that rolling wheel (8) inside all is fixed with pivot (10), both ends all extend rolling wheel (8) about pivot (10), pivot (10) right-hand member is connected with jar body (1) inner wall right side rotation.
4. A solid waste crushing apparatus as claimed in claim 3 wherein: jar body (1) left side top is fixed with two motors (9) that are the front and back distribution, two the jar body (1) inner wall left side is all worn out to pivot (10) left end, and two pivot (10) left end respectively with two motor (9) rotate and are connected.
5. The solid waste crushing apparatus as claimed in claim 1, wherein: the utility model discloses a jar body (1) inner wall bottom is fixed with guide plate (13), guide plate (13) are the high form in the low right side in a left side, just jar body (1) bottom is fixed with motor two (12), bull stick (14) lower extreme runs through guide plate (13) and jar body (1) bottom and rotates with motor two (12) upside and be connected.
6. The solid waste crushing apparatus as claimed in claim 1, wherein: the utility model discloses a feed tank, including jar body (1), jar body (1) left side below is opened there is the discharge gate, jar body (1) left side welding has a hopper (16) of going out that corresponds with the discharge gate, go out hopper (16) and communicate with each other through discharge gate and jar body (1), just jar body (1) left is equipped with case (17) that gathers materials, case (17) right side is opened there is the opening to gather materials, go out hopper (16) left end and pass the opening and stretch into in case (17) that gathers materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738471.8A CN113941396A (en) | 2020-07-28 | 2020-07-28 | Solid waste crushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738471.8A CN113941396A (en) | 2020-07-28 | 2020-07-28 | Solid waste crushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113941396A true CN113941396A (en) | 2022-01-18 |
Family
ID=79326921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010738471.8A Pending CN113941396A (en) | 2020-07-28 | 2020-07-28 | Solid waste crushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113941396A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150231637A1 (en) * | 2014-02-14 | 2015-08-20 | Umm Al-Qura University | Compostable waste processing apparatus |
| CN206823975U (en) * | 2017-05-15 | 2018-01-02 | 重庆市蜀达饲料有限公司 | A kind of feed grinder persistently cut |
| CN207056745U (en) * | 2017-07-25 | 2018-03-02 | 朱捷 | A kind of construction waste crushing equipment with dedusting function |
| CN108080072A (en) * | 2017-11-29 | 2018-05-29 | 刘勤 | A kind of garden maintenance is crushed with leaf and recycles equipment |
| CN108543573A (en) * | 2018-06-22 | 2018-09-18 | 枣庄鑫金山智能机械股份有限公司 | A kind of dedusting type impact breaker |
| CN208288112U (en) * | 2018-02-27 | 2018-12-28 | 洛阳环锋资源有限公司 | A kind of environment-friendly type building device for pulverizing rubbish |
| CN109201248A (en) * | 2018-08-28 | 2019-01-15 | 京山俊平机电科技有限公司 | A kind of environmental protection disposable medical apparatus grinding device |
| CN209093576U (en) * | 2018-10-11 | 2019-07-12 | 新邵辰州锑业有限责任公司 | Grinding device is used in a kind of processing of antimony ore |
| CN110694734A (en) * | 2019-11-08 | 2020-01-17 | 靖州华鑫莫来石有限公司 | Natural mullite raw material environment-friendly crushing device |
| CN210187390U (en) * | 2019-05-20 | 2020-03-27 | 波尔（泉州）测控科技有限责任公司 | A breaker for building rubbish letter sorting |
-
2020
- 2020-07-28 CN CN202010738471.8A patent/CN113941396A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150231637A1 (en) * | 2014-02-14 | 2015-08-20 | Umm Al-Qura University | Compostable waste processing apparatus |
| CN206823975U (en) * | 2017-05-15 | 2018-01-02 | 重庆市蜀达饲料有限公司 | A kind of feed grinder persistently cut |
| CN207056745U (en) * | 2017-07-25 | 2018-03-02 | 朱捷 | A kind of construction waste crushing equipment with dedusting function |
| CN108080072A (en) * | 2017-11-29 | 2018-05-29 | 刘勤 | A kind of garden maintenance is crushed with leaf and recycles equipment |
| CN208288112U (en) * | 2018-02-27 | 2018-12-28 | 洛阳环锋资源有限公司 | A kind of environment-friendly type building device for pulverizing rubbish |
| CN108543573A (en) * | 2018-06-22 | 2018-09-18 | 枣庄鑫金山智能机械股份有限公司 | A kind of dedusting type impact breaker |
| CN109201248A (en) * | 2018-08-28 | 2019-01-15 | 京山俊平机电科技有限公司 | A kind of environmental protection disposable medical apparatus grinding device |
| CN209093576U (en) * | 2018-10-11 | 2019-07-12 | 新邵辰州锑业有限责任公司 | Grinding device is used in a kind of processing of antimony ore |
| CN210187390U (en) * | 2019-05-20 | 2020-03-27 | 波尔（泉州）测控科技有限责任公司 | A breaker for building rubbish letter sorting |
| CN110694734A (en) * | 2019-11-08 | 2020-01-17 | 靖州华鑫莫来石有限公司 | Natural mullite raw material environment-friendly crushing device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220118 |
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| RJ01 | Rejection of invention patent application after publication |