CN111005249B - Pulping system for producing paper products by recycling waste paper - Google Patents
Pulping system for producing paper products by recycling waste paper Download PDFInfo
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- CN111005249B CN111005249B CN201911349229.5A CN201911349229A CN111005249B CN 111005249 B CN111005249 B CN 111005249B CN 201911349229 A CN201911349229 A CN 201911349229A CN 111005249 B CN111005249 B CN 111005249B
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- pulping
- waste paper
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- conveying belt
- paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/342—Mixing apparatus
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
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- 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
- Y02W30/64—Paper recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention relates to a pulping system for producing paper products by recycling waste paper, which comprises a mounting rack, a pulping device, a spraying device, a crushing device and a pushing mechanism, and is characterized in that: the pulping device is installed to the mounting bracket bottom, and spray set is installed on mounting bracket top right side, and the pan feeding mouth has been seted up on mounting bracket top left side, and pan feeding mouth below is provided with push mechanism, and reducing mechanism is installed on mounting bracket middle part right side, is connected with the unloading pipe between pulping device and the reducing mechanism, and spray set is located directly over the reducing mechanism. The invention can solve the following problems existing in the treatment after the current waste paper is recycled: in the process of pulping by using the waste paper, the pulp is manufactured after the waste paper is not fully crushed, and the cellulose contained in the pulp is not fully decomposed when being decomposed again in the pulping process, so that the produced recycled paper has overlarge surface roughness, is easy to tear and is difficult to form when meeting water, and the utilization value of the recycled paper is reduced.
Description
Technical Field
The invention relates to the field of waste paper recycling and reprocessing processing, in particular to a pulping system for producing paper products by recycling waste paper.
Background
Waste paper, broadly refers to recyclable and renewable resources which are discarded after being used in production and life, and comprises various high-grade paper, yellow board paper, waste paper boxes, edge cutting paper, packing paper, paper for enterprises and units, paper for engineering, books and periodicals, and the like; the paper is mainly made of plant fibers such as wood, grass, reed, bamboo and the like, the waste paper is also called as secondary fiber, and the most important purpose is to produce recycled paper products by recycling the fibers so as to exert the resource value of the waste paper to the maximum extent.
The treatment after the waste paper is recycled at present mainly has the following problems: in the process of pulping by using the waste paper, the waste paper can not be fully crushed to manufacture paper pulp, and the cellulose contained in the paper pulp can not be fully decomposed when being decomposed again in the pulping process, so that the produced recycled paper has overlarge surface roughness, is easy to tear and is difficult to form when meeting water, the utilization value of the recycled paper is reduced, and the original significance of recycling the recycled waste paper is lost.
Disclosure of Invention
The invention aims to provide a pulping system for producing paper products by recycling waste paper, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a pulping system of waste paper recovery production paper products of recycling, includes mounting bracket, slurrying device, spray set, reducing mechanism and push mechanism, its characterized in that: the pulping device is installed at the bottom of the installation frame, the spraying device is installed on the right side of the top of the installation frame, the feeding port is formed in the left side of the top of the installation frame, the pushing mechanism is arranged below the feeding port, the crushing device is installed on the right side of the middle of the installation frame, the discharging pipe is connected between the pulping device and the crushing device, and the spraying device is located right above the crushing device; wherein:
the pulping device comprises a pulping tank, a sealing cover, an exhaust valve, a cylinder, a heating mechanism, a stirring motor, a stirring impeller and a pulp discharge valve, wherein the sealing cover is installed at the top end of the pulping tank;
the spraying device comprises a water tank, a spraying plate, a piston rod, a cross rod, a vertical rod, a disc and a transmission rod, wherein the spraying plate is arranged below the water tank, a through hole is formed in the center of the bottom of the water tank, the piston rod is slidably arranged in the through hole, a through groove is formed in the surface of the piston rod, the top end of the piston rod is connected with the middle of the cross rod, two ends of the cross rod are connected with one end of the vertical rod through a pin shaft, the other end of the vertical rod is connected with the edge of the disc through;
as a further scheme of the invention: the crushing device comprises a driving roller, a first conveying belt, a driven roller, a second conveying belt and blades, wherein the two driving rollers are arranged, a certain distance is reserved between the two driving rollers, the two driving rollers are horizontally arranged and connected through the first conveying belt, the two ends of the driving roller are arranged on the side wall of the mounting frame, one end of the driving roller close to the left end of the mounting frame penetrates through the side wall of the mounting frame to be connected with a main gear and a driven roller, the main gear is positioned on the inner side of the driven roller, the driven roller is connected with a driving wheel through a belt, the driving wheel is arranged on an output shaft of a driving motor, the driving motor is arranged on the left side of the middle part of the mounting frame, the right side of the main gear is meshed with a driven gear, the driven gear is arranged at one end of the driven roller, the driven, the blade edge on the first conveyor belt and the blade edge on the second conveyor belt face opposite directions;
as a further scheme of the invention: the pushing mechanism comprises a sealing plate, a push plate and an intermittent transmission mechanism, the bottom end of the transmission rod is connected with the front end of the sealing plate, the lower side of the bottom end of the sealing plate is connected with the push plate, and the intermittent transmission mechanism is arranged on the left side of the lower end of the push plate;
as a further scheme of the invention: the intermittent transmission mechanism comprises a rack, a T-shaped part, a wheel disc and a second gear, the left side of the lower end of the push plate is connected with the rack, the T-shaped part is meshed on the rack, the T-shaped part is connected with the wheel disc through a pin shaft, the wheel disc is installed on the side wall of the installation frame and is connected with the second gear through a connecting rod, the second gear is meshed with the first gear, the first gear is installed on an output shaft of the driving motor, and the first gear is located on the inner side of the driving;
as a further scheme of the invention: the heating mechanism comprises a heating pipe and a heat insulation plate, the heating pipe is arranged on the outer wall of the pulping tank, the heat insulation plate covers the heating pipe, and the heat insulation plate is arranged on the outer wall of the pulping tank;
compared with the prior art, the invention has the following advantages:
the following problems in the treatment after the recovery of the waste paper can be solved: in the process of pulping by using the waste paper, the waste paper can not be fully crushed to manufacture paper pulp, and the cellulose contained in the paper pulp can not be fully decomposed when being decomposed again in the pulping process, so that the produced recycled paper has overlarge surface roughness, is easy to tear and is difficult to form when meeting water, the utilization value of the recycled paper is reduced, and the original significance of recycling the recycled waste paper is lost.
When the crushing device of the device works, the driving roller and the driven roller are matched with each other to drive the blades on the first conveying belt and the second conveying belt to move, and the blade edge on the first conveying belt and the blade edge on the second conveying belt are opposite in direction, so that the waste paper can be torn; when the pulping device of the device is in operation, the stirring motor drives the stirring blades to stir the waste paper soaked in water and shredded, the heating mechanism heats and cooks the pulping tank, and the cellulose in the waste paper is more fully decomposed by stirring and cooking.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional plan view of the present invention;
FIG. 3 is a schematic plan view, partially in section, of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2;
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained with reference to fig. 1 to 4.
The utility model provides a pulping system of waste paper recovery production paper products of recycling, includes mounting bracket 1, slurrying device 2, spray set 3, reducing mechanism 4 and pusher 5, its characterized in that: the pulping device 2 is installed at the bottom of the installation frame 1, the spraying device 3 is installed on the right side of the top of the installation frame 1, a feeding port 11 is formed in the left side of the top of the installation frame 1, a pushing device 5 is arranged below the feeding port 11, a crushing device 4 is installed on the right side of the middle of the installation frame 1, a discharging pipe 12 is connected between the pulping device 2 and the crushing device 4, and the spraying device 3 is located right above the crushing device 4; wherein:
the pulping device 2 comprises a pulping tank 21, a sealing cover 22, an exhaust valve 23, an air cylinder 24, a heating mechanism 25, a stirring motor 26, a stirring impeller 27 and a pulp discharge valve 28, wherein the sealing cover 22 is installed at the top end of the pulping tank 21, the exhaust valve 23 is installed at the surface edge of the sealing cover 22, the middle of the sealing cover 22 is connected with the bottom end of the air cylinder 24, the top end of the air cylinder 24 is connected with the mounting frame 1, the heating mechanism 25 is installed on the outer wall of the pulping tank 21, a support 211 is arranged at the bottom of the inner wall of the pulping tank 21, the stirring motor 26 is installed on the support 211, the stirring impeller 27 is installed on an output shaft of the;
during specific work, the shredded waste paper soaked in water is conveyed into the pulping tank 21, the heating mechanism 25 and the stirring motor 26 are started to cook the waste paper and stir the waste paper, so that cellulose in the waste paper is decomposed more fully, the sealing cover 22 can prevent mixture from splashing in the stirring process, the pulping valve 28 is opened after pulping is completed, the air cylinder 24 is started to push the sealing cover 22 to move downwards to discharge pulping from the pulping valve 28, and then the next process is carried out.
The spraying device 3 comprises a water tank 31, a spraying plate 32, a piston rod 33, a cross rod 34, a vertical rod 35, a disc 36 and a transmission rod 37, wherein the spraying plate 32 is arranged below the water tank 31, a through hole is formed in the center of the bottom of the water tank 31, the piston rod 33 is slidably arranged in the through hole, a through groove 331 is formed in the surface of the piston rod 33, the top end of the piston rod 33 is connected with the middle of the cross rod 34, two ends of the cross rod 34 are connected with one end of the vertical rod 35 through a pin shaft, the other end of the vertical rod 35 is connected with the edge of the disc 36 through a pin;
during specific work, add water and some medicines etc. in the water tank 31, disc 36 rotates and drives montant 35 and remove to drive horizontal pole 34 and reciprocate, make piston rod 33 reciprocate, can realize that 32 intermittent type nature of shower plate sprays water to waste paper, avoid extravagant water resource.
The crushing device 4 comprises two driving rollers 41, a first conveying belt 42, a driven roller 43, a second conveying belt 44 and a blade 45, wherein the two driving rollers 41 are horizontally arranged at a certain distance, the two driving rollers 41 are connected through the first conveying belt 42, two ends of each driving roller 41 are arranged on the side wall of the mounting frame 1, one end of each driving roller 41 close to the left end of the mounting frame 1 penetrates through the side wall of the mounting frame 1 to be connected with a main gear 13 and a driven roller 14, the main gear 13 is positioned on the inner side of the driven roller 14, the driven roller 14 is connected with a driving wheel 16 through a belt 15, the driving wheel 16 is arranged on an output shaft of a driving motor 17, the driving motor 17 is arranged on the left side of the middle of the mounting frame 1, a driven gear 18 is meshed on the right side of the main gear 13 and is arranged at one end of the driven roller 43, the first conveyor belt 42 and the second conveyor belt 44 are connected through the second conveyor belt 44, blades 45 are uniformly arranged on the first conveyor belt 42 and the second conveyor belt 44, and the blade edge of the blade 45 on the first conveyor belt 42 is opposite to the blade edge of the blade 45 on the second conveyor belt 44 in direction;
during specific work, the driving motor 17 is started, the driving wheel 16 drives the driven wheel to rotate through the belt, so that the driving roller 41 and the driven roller 43 are driven to rotate, the rotating directions of the driving roller 41 and the driven roller 43 are opposite, and therefore the blades 45 on the first conveying belt 42 and the second conveying belt 44 can be matched with each other, and tearing of waste paper is achieved.
The pushing device 5 comprises a sealing plate 51, a push plate 52 and an intermittent transmission mechanism 53, the bottom end of the transmission rod 37 is connected with the front end of the sealing plate 51, the lower side of the bottom end of the sealing plate 51 is connected with the push plate 52, and the intermittent transmission mechanism 53 is arranged on the left side of the lower end of the push plate 52; during specific work, driving motor 17 drives intermittent type drive mechanism 53 and removes, and intermittent type nature's promotion push pedal 52 and shrouding 51 move forward together to realize in waste paper is impeld reducing mechanism 4, can spray the limit and tear, during intermittent type drive mechanism 53 backward movement, begin to pack, spray and close, fill out the material once like this and spout water, can effectual using water wisely, waste paper departure when shrouding 51 can also prevent to tear waste paper.
The intermittent drive mechanism 53 comprises a rack 531, a T-shaped part 532, a wheel disc 533 and a second gear 534, the rack 531 is connected to the left side of the lower end of the push plate 52, the T-shaped part 532 is meshed on the rack 531, the T-shaped part 532 is connected with the wheel disc 533 through a pin, the wheel disc 533 is installed on the side wall of the installation frame 1 and is connected with the second gear 534 through a connecting rod, the second gear 534 is meshed with the first gear 19, the first gear 19 is installed on an output shaft of the driving motor 17, the first gear 19 is located on the inner side of the driving wheel 16, in specific work, the driving motor 17 drives the first gear 19 to rotate, the second gear 534 rotates along with the driving wheel disc 533, the wheel disc 533 drives the T-shaped part 532 to swing left and right, the rack 531 can move back.
The working principle of the invention is as follows:
starting a driving motor 17, when a sealing plate 51 is opened, filling waste paper into the device from a feeding port 11, moving an intermittent transmission mechanism 53, intermittently pushing a push plate 52 and the sealing plate 51 to move forward together, pushing the waste paper into a crushing device 4, driving a disc 36 to rotate by the sealing plate 51 through a transmission rod 37 so as to drive a vertical rod 35 to move, thereby driving a cross rod 34 to move up and down, so that a piston rod 33 moves up and down, so that a spraying plate 32 intermittently sprays water to the waste paper, driving wheels 16 drive driven wheels to rotate through belts, thereby driving a driving roller 41 and a driven roller 43 to rotate, and the driving roller 41 and the driven roller 43 rotate in opposite directions, therefore, blades 45 on a first conveying belt 42 and a second conveying belt 44 can be matched with each other, tearing of the waste paper by the crushing device 4 is realized, the torn waste paper is mixed with water and enters a pulping tank 21 through a discharging pipe 12, and then, the waste paper is cooked and stirred, after pulping, the pulp discharging valve 28 is opened, the air cylinder 24 is started to push the sealing cover 22 to move downwards to discharge the pulping from the pulp discharging valve 28, and then the next process is carried out.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (3)
1. The utility model provides a pulping system of waste paper recycling production paper products, includes mounting bracket (1), slurrying device (2), spray set (3), reducing mechanism (4) and pusher (5), its characterized in that: the pulping device (2) is installed at the bottom of the installation frame (1), the spraying device (3) is installed on the right side of the top of the installation frame (1), a feeding port (11) is formed in the left side of the top of the installation frame (1), a pushing device (5) is arranged below the feeding port (11), the crushing device (4) is installed on the right side of the middle of the installation frame (1), a discharging pipe (12) is connected between the pulping device (2) and the crushing device (4), and the spraying device (3) is located right above the crushing device (4); wherein:
the pulping device (2) comprises a pulping tank (21), a sealing cover (22), an exhaust valve (23), an air cylinder (24), a heating mechanism (25), a stirring motor (26), a stirring impeller (27) and a pulp discharge valve (28), wherein the sealing cover (22) is installed at the top end of the pulping tank (21), the exhaust valve (23) is installed on the surface edge of the sealing cover (22), the middle of the sealing cover (22) is connected with the bottom end of the air cylinder (24), the top end of the air cylinder (24) is connected with an installation frame (1), the heating mechanism (25) is installed on the outer wall of the pulping tank (21), a support (211) is arranged at the bottom of the inner wall of the pulping tank (21), the stirring motor (26) is installed on the support (211), the stirring impeller (27) is installed on the output shaft of the stirring motor (26), and;
the spraying device (3) comprises a water tank (31), a spraying plate (32), a piston rod (33), a cross rod (34), a vertical rod (35), a disc (36) and a transmission rod (37), wherein the spraying plate (32) is installed below the water tank (31), a through hole is formed in the center of the bottom of the water tank (31), the piston rod (33) is installed in the through hole in a sliding mode, a through groove (331) is formed in the surface of the piston rod (33), the top end of the piston rod (33) is connected with the middle of the cross rod (34), two ends of the cross rod (34) are connected with one end of the vertical rod (35) through pin shafts, the other end of the vertical rod (35) is connected with the edge of the disc (36) through pin shafts, and the symmetrical positions;
the smashing device (4) comprises two driving rollers (41), a first conveying belt (42), a driven roller (43), a second conveying belt (44) and a blade (45), the two driving rollers (41) are arranged, a certain distance is reserved between the two driving rollers (41) and are horizontally arranged, the two driving rollers (41) are connected through the first conveying belt (42), two ends of each driving roller (41) are installed on the side wall of the installation rack (1), one end of each driving roller (41) close to the left end of the installation rack (1) penetrates through the side wall of the installation rack (1) to be connected with the main gear (13) and the driven wheel (14), the main gear (13) is located on the inner side of the driven wheel (14), the driven wheel (14) is connected with the driving wheel (16) through the belt (15), the driving wheel (16) is installed on the output shaft of the driving motor (17), the driving motor (17) is installed on the left side of the middle of the installation, the driven roller (43) is arranged on the side wall of the mounting frame (1), two driven rollers (43) are arranged and located between the two driving rollers (41) and connected through a second conveying belt (44), blades (45) are uniformly arranged on the first conveying belt (42) and the second conveying belt (44), and the blade edges of the blades (45) on the first conveying belt (42) and the blade edges of the blades (45) on the second conveying belt (44) face opposite directions;
pusher (5) include shrouding (51), push pedal (52) and intermittent drive mechanism (53), and transfer line (37) bottom is connected with shrouding (51) front end, and shrouding (51) bottom downside is connected with push pedal (52), and intermittent drive mechanism (53) are installed on push pedal (52) lower extreme left side.
2. The pulping system for recycling waste paper to produce paper products according to claim 1, wherein: intermittent type drive mechanism (53) are including rack (531), T type spare (532), rim plate (533) and No. two gears (534), push pedal (52) lower extreme left side is connected with rack (531), the meshing has T type spare (532) on rack (531), T type spare (532) are through the pin hub connection with rim plate (533), rim plate (533) are installed on mounting bracket (1) lateral wall, be connected with No. two gears (534) through the connecting rod, No. two gears (534) are in the same place with a gear (19) meshing, install on driving motor (17) output shaft first gear (19), first gear (19) are located action wheel (16) inboardly.
3. The pulping system for recycling waste paper to produce paper products according to claim 1, wherein: the heating mechanism (25) comprises a heating pipe (251) and a heat insulation plate (252), the heating pipe (251) is installed on the outer wall of the pulping tank (21), the heat insulation plate (252) covers the heating pipe (251), and the heat insulation plate (252) is installed on the outer wall of the pulping tank (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911349229.5A CN111005249B (en) | 2019-12-24 | 2019-12-24 | Pulping system for producing paper products by recycling waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911349229.5A CN111005249B (en) | 2019-12-24 | 2019-12-24 | Pulping system for producing paper products by recycling waste paper |
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| CN111005249A CN111005249A (en) | 2020-04-14 |
| CN111005249B true CN111005249B (en) | 2020-10-30 |
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| CN201911349229.5A Active CN111005249B (en) | 2019-12-24 | 2019-12-24 | Pulping system for producing paper products by recycling waste paper |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112962342A (en) * | 2021-02-12 | 2021-06-15 | 徐朝应 | Abandonment carton recovery plant |
| CN113308924A (en) * | 2021-05-07 | 2021-08-27 | 陈学兰 | Be used for waste paper recovery processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1386998B1 (en) * | 2002-07-31 | 2005-04-27 | Milltech S.r.l. | Pulper and method for the recovery of paper production waste |
| CN204523158U (en) * | 2015-02-03 | 2015-08-05 | 安徽省龙鹏高分子材料有限公司 | Powdery paints raw meal crushing device |
| CN205775583U (en) * | 2016-05-24 | 2016-12-07 | 邹桂铃 | A kind of closed pulp manufacture case |
| CN107761423A (en) * | 2016-08-15 | 2018-03-06 | 宏观世纪（天津）科技股份有限公司 | A kind of reducing mechanism for litter decoration recovery |
| CN106475213B (en) * | 2016-11-29 | 2019-06-28 | 德米特（苏州）电子环保材料有限公司 | Raw material chopper |
| CN109238421A (en) * | 2017-07-10 | 2019-01-18 | 安正（天津）新材料股份有限公司 | One kind is for weighing and mixing interior external shield material granule measurement scale |
| CN207295326U (en) * | 2017-09-29 | 2018-05-01 | 德州祥力纸制品包装有限公司 | A kind of paper pulp recycle unit |
| CN108517706A (en) * | 2018-06-15 | 2018-09-11 | 许昌晨鸣纸业股份有限公司 | A kind of pulping device for production of paper products |
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Effective date of registration: 20201012 Address after: No. 110, group 9, Sanjiangkou village, Yangkou Town, Rudong County, Nantong City, Jiangsu Province, 226400 Applicant after: Zhang Yaqin Address before: Guangdong University of technology, No. 100, West Ring Road, Guangzhou University, Panyu District, Guangzhou, 511400, Guangdong Province Applicant before: Liao Yulin |
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