CN111440904B - Be used for leather clean production environmental protection material placement equipment - Google Patents
Be used for leather clean production environmental protection material placement equipment Download PDFInfo
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- CN111440904B CN111440904B CN202010308146.8A CN202010308146A CN111440904B CN 111440904 B CN111440904 B CN 111440904B CN 202010308146 A CN202010308146 A CN 202010308146A CN 111440904 B CN111440904 B CN 111440904B
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- Prior art keywords
- fur
- water
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- guide
- pipe
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 239000010985 leather Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000007613 environmental effect Effects 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000007605 air drying Methods 0.000 claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 210000004209 hair Anatomy 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 241000883990 Flabellum Species 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 6
- 238000003780 insertion Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 2
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 239000000835 fiber Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/58—Drying
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/14—Auxiliary devices for leather-working machines, e.g. grinding devices for blading cylinders or dust-removal devices combined with the working machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to the technical field of leather treatment, and particularly discloses environment-friendly material placing equipment for leather cleaning production, which comprises a machine shell and a material collecting chamber, wherein two conveyor belts are obliquely arranged in the machine shell, a water absorbing layer is attached to the surfaces of the conveyor belts, a stripping piece is attached to the lower end of the water absorbing layer, and the stripping piece is fixedly connected with the inner wall of the machine shell: according to the invention, the conveyor belt in the shell is matched with the water absorbing layer attached to the surface of the shell, so that fur can be extruded and water contained in the fur can be absorbed, and the arrangement of the air drying chamber is matched, so that the fur subjected to preliminary dehydration can be further dried in the air drying chamber, namely, the fur can be dried before the fur is accumulated, and the arrangement of the material guide chamber and the material collecting chamber can facilitate the collection and accumulation of the dried fur, so that the value of the fallen fur is not influenced by water stain, and the waste of the fur value is avoided.
Description
Technical Field
The invention relates to the technical field of leather treatment, in particular to an environment-friendly material placing device for leather cleaning production.
Background
In the cleaning production process of leather, certain fur falls off from the leather, and the fallen fur has certain value, so that the fallen fur needs to be collected and placed in order to avoid the condition that the fur value is wasted and causes environmental pollution. The existing fur objects falling off from the leather are generally directly piled together without treatment, however, the fallen fur can have certain water stain in the cleaning process of the leather, if the fallen fur objects are piled together without treatment, if the fallen fur objects are piled together for too long, certain value influence can be caused to the fallen fur, and therefore, the fallen fur objects need to be dried before being piled and placed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the environment-friendly material placing equipment for leather cleaning production, which has the advantages of drying the fallen fur before stacking and placing, and the like, and solves the problem that the value of the fallen fur is influenced by the residual water stain when stacking and placing.
The invention relates to environment-friendly material placing equipment used in leather cleaning production, which comprises a machine shell and a material collecting chamber, wherein two conveyor belts are obliquely arranged in the machine shell, a water absorbing layer is attached to the surface of each conveyor belt, a stripping piece is attached to the lower end of the water absorbing layer and fixedly connected with the inner wall of the machine shell, the bottom of the machine shell is communicated with a water pipe and a discharge pipe, the surface of the discharge pipe is fixedly connected with an air drying chamber, the bottom end of the discharge pipe is communicated with the top of the air drying chamber, the right end of the air drying chamber is communicated with an air supply pipe, the tail end of the air supply pipe is communicated with a fan, the lower left corner of the air drying chamber is communicated with a material guide pipe, the tail end of the material guide pipe is communicated with a material guide chamber, the lower end of the material guide chamber is communicated with the material collecting chamber, the left end of the material guide chamber is communicated with an air exhaust pipe, the tail end of the air exhaust pipe is communicated with an exhaust fan, and the conveyor belts in the machine shell are matched with the water absorbing layer attached to the surface, can make the fur extrude and absorb the moisture that wherein contains, the setting of air-dry room is cooperated again to can make the fur through preliminary dehydration further air-dry in the air-dry indoor, can carry out drying process to its fur earlier before piling up the fur, and the setting of guide room and collecting chamber can be convenient for collect the hair of drying and pile up, thereby can not make the fur that falls influence its value because of water stain, thereby cause the waste of fur value.
According to the environment-friendly material placing device used in leather cleaning production, the inner side of the doffing sheet is fixedly connected with the water squeezing lug which is attached to the water absorbing layer, the tail end of the doffing sheet is fixedly connected with the water guide plate, and the tail end of the water guide plate is located inside the water pipe, so that the effect of squeezing water in the water absorbing layer is achieved, and the squeezed water flow is conveniently guided into the water pipe.
The environment-friendly material placing equipment used in leather cleaning production is characterized in that the material guide chamber is internally provided with the material guide fan, the material guide fan is internally provided with the motor, the surface of the fan blade of the material guide fan is provided with the ventilation hole, so that fur which can flow into the material guide chamber can be collected, and the ventilation hole is formed to better collect the fur.
The invention relates to environment-friendly material placing equipment used in leather cleaning production, wherein a jack is arranged on the left side of a material guiding chamber, a fitting groove is arranged on the bottom surface of the inner wall of the left side of the material guiding chamber, a separating plate is attached to the inner wall of the jack, a ventilation hole is arranged on the surface of the separating plate, the bottom end of the separating plate is attached to the inner wall of the fitting groove, and the separating plate is arranged to avoid possible residual fur from entering the interior of an exhaust fan through an exhaust pipe.
The invention relates to an environment-friendly material placing device used in leather cleaning production, wherein the upper end of a machine shell is communicated with a feeding box, and the front side of the machine shell is provided with an access door.
The environment-friendly material placing equipment for the leather cleaning production is characterized in that a small door is arranged on the left side of the collecting chamber, the air drying chamber is oval, the water absorbing layer is made of cotton wool, the air drying chamber is oval, so that fur is driven by wind power to circularly flow in the air drying chamber, and the water absorbing layer made of the cotton wool can effectively absorb water contained in the fur.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the conveyor belt in the shell is matched with the water absorbing layer attached to the surface of the shell, so that fur can be extruded and water contained in the fur can be absorbed, and the arrangement of the air drying chamber is matched, so that the fur subjected to preliminary dehydration can be further dried in the air drying chamber, namely, the fur can be dried before the fur is accumulated, and the arrangement of the material guide chamber and the material collecting chamber can facilitate the collection and accumulation of the dried fur, so that the value of the fallen fur is not influenced by water stain, and the waste of the fur value is avoided.
2. The dewatering sheet is arranged, so that the hair on the water absorbing layer can fall off from the surface of the dewatering sheet, namely, a large amount of fur is prevented from remaining on the surface of the water absorbing layer, the water squeezing lugs fixedly connected with the inner side of the dewatering sheet can squeeze the water absorbing layer on the water absorbing layer through the surface of the dewatering sheet, so that water absorbed by the water absorbing layer can be separated from the water absorbing layer, and the water guide plate is convenient for water flow extruded by the water absorbing layer to flow into the water pipe.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic front sectional view of the housing of the present invention;
FIG. 2 is a schematic front sectional view of the material guiding chamber according to the present invention;
FIG. 3 is a schematic front view of the housing of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 1.
In the figure: 1. a housing; 2. a conveyor belt; 3. a water-absorbing layer; 4. removing the material sheets; 5. squeezing the water bump; 6. a water guide plate; 7. a water pipe; 8. a discharge pipe; 9. an air drying chamber; 10. an air supply pipe; 11. a fan; 12. a material guide pipe; 13. a material guiding fan; 14. a separation plate; 15. an exhaust pipe; 16. an exhaust fan; 17. a material collecting chamber; 18. a small door; 19. a feeding box; 20. an access door; 21. a material guide chamber.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-4, the environment-friendly material placing device for leather cleaning production of the invention comprises a machine shell 1 and a material collecting chamber 17, two conveyor belts 2 are obliquely arranged in the machine shell 1, a water absorbing layer 3 is attached to the surfaces of the conveyor belts 2, a material removing sheet 4 is attached to the lower end of the water absorbing layer 3, the material removing sheet 4 is fixedly connected with the inner wall of the machine shell 1, a water pipe 7 and a material discharging pipe 8 are communicated with the bottom of the machine shell 1, an air drying chamber 9 is fixedly connected with the surface of the material discharging pipe 8, the bottom end of the material discharging pipe 8 is communicated with the top of the air drying chamber 9, the right end of the air drying chamber 9 is communicated with an air supply pipe 10, the tail end of the air supply pipe 10 is communicated with a fan 11, the lower left corner of the air drying chamber 9 is communicated with a material guide pipe 12, the tail end of the material guide pipe 12 is communicated with a material guide chamber 21, the lower end of the material guide chamber 21 is communicated with the air exhausting chamber 17, the left end of the material guide chamber 21 is communicated with an air exhausting pipe 15, the tail end of the air exhausting pipe 15 is communicated with an exhaust fan 16, the layer 3 that absorbs water of its surface laminating of conveyer belt 2 cooperation through casing 1 inside, can make the fur extrude and absorb the moisture that wherein contains, cooperate the setting of air-dry chamber 9 again, thereby can make the fur through preliminary dehydration carry out further air-dry in air-dry chamber 9, can carry out drying process to its fur earlier before piling up the fur, and the setting of guide chamber 21 and collecting chamber 17, can be convenient for collect piling up the hair of drying, thereby can not make the fur that falls influence its value because of water stain, thereby cause the waste of fur value.
The inner side of the stripping sheet 4 is fixedly connected with the wringing lug 5, the wringing lug 5 is attached to the water absorbing layer 3, the tail end of the stripping sheet 4 is fixedly connected with the water guide plate 6, the tail end of the water guide plate 6 is located inside the water pipe 7, the effect of squeezing the water in the water absorbing layer 3 is achieved, and the water flow extruded by the water guide plate is conveniently led into the water pipe 7.
The inside of guide room 21 is provided with guide fan 13, and the inside of guide fan 13 is from taking the motor, and ventilative hole has been seted up on the flabellum surface of guide fan 13, has played and has collected the fur that gushes into in the guide room 21, and the setup of bleeder vent is then for better collecting the fur.
The jack has been seted up on the left side of guide chamber 21, and the groove that agrees with has been seted up to the left side inner wall bottom surface of guide chamber 21, and the inner wall laminating of jack has separator 14, and ventilative hole has been seted up on the surface of separator 14, and the bottom of separator 14 is laminated with the inner wall in the groove that agrees with mutually, and the setting of separator 14 is inside in order to avoid probably remaining fur to pass through exhaust column 15 entering air exhauster 16.
The upper end of the machine shell 1 is communicated with a feeding box 19, and the front surface of the machine shell 1 is provided with an access door 20.
In the use of the invention: firstly, fur fallen in the cleaning production process of leather is collected and poured into a feeding box 19, the fur in the feeding box 19 falls onto a water absorbing layer 3 under the action of gravity, then the fur can move downwards and fall into an air drying chamber 9 through a discharge pipe 8 through the work of a conveying belt 2, the conveying belt 2 can extrude the fur at the same time, namely the water absorbing layer 3 can preliminarily dry the fur, when the fur does not fall into the air drying chamber 9 under the action of gravity, the fur remained on the water absorbing layer 3 can be separated and fall downwards under the action of a stripping sheet 4, when the water absorbing layer 3 passes through the stripping sheet 4, the water absorbing layer 3 can be extruded under the action of a water squeezing lug 5, namely water in the water absorbing layer 3 can be separated out, and then the water is guided to flow into a water pipe 7 under the action of a water guide plate 6; when the hair is in the air drying chamber 9, the air in the air drying chamber 9 can flow due to the fan 11 and the air supply pipe 10, and the air drying chamber 9 is designed to be oval, so that the fur can be conveniently carried by wind power to rotate in the air drying chamber 9, when the fur is dried, the fur carried by the wind power in the air supply pipe 10 can enter the material guide pipe 12 due to the work of the exhaust fan 16, so that the dried fur can enter the material guide chamber 21, the fur entering the material guide chamber 21 can be attached to the surface of the fan blade under the clockwise rotation of the material guide fan 13, and then the fur falls into the material collection chamber 17 under the action of gravity, so that the collection and placement of the fur are completed.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (1)
1. The utility model provides an environmental protection material placement equipment for leather cleaning production, includes casing and collecting chamber, its characterized in that: the inner part of the shell is obliquely provided with two conveying belts, the surfaces of the conveying belts are attached with water absorbing layers, the lower ends of the water absorbing layers are attached with material removing sheets, the material removing sheets are fixedly connected with the inner wall of the shell, the bottom of the shell is communicated with a water pipe and a discharging pipe, the surface of the discharging pipe is fixedly connected with an air drying chamber, fur in a feeding box can fall onto the water absorbing layers under the action of gravity, the fur can move downwards through the work of the conveying belts and fall into the air drying chamber through the discharging pipe, the conveying belts can extrude the fur at the same time, when the fur does not fall into the air drying chamber under the action of gravity, the fur remained on the water absorbing layers can be separated and fall downwards under the action of the material removing sheets, the air drying chamber is oval, the fur can be conveniently carried in the air drying chamber by wind, and the bottom ends of the discharging pipes are communicated with the top of the air drying chamber, the right end of the air drying chamber is communicated with an air supply pipe, the tail end of the air supply pipe is communicated with a fan, the lower left corner of the air drying chamber is communicated with a guide pipe, the tail end of the guide pipe is communicated with a guide chamber, the lower end of the guide chamber is communicated with a material collecting chamber, the left end of the guide chamber is communicated with an exhaust pipe, the tail end of the exhaust pipe is communicated with an exhaust fan, a guide fan is arranged in the guide chamber, a motor is arranged in the guide fan, ventilation holes are formed in the surface of the fan blades of the guide fan, an insertion hole is formed in the left side of the guide chamber, a conjunction groove is formed in the bottom surface of the inner wall of the left side of the guide chamber, a separation plate is attached to the inner wall of the insertion hole, ventilation holes are formed in the surface of the separation plate, the bottom end of the separation plate is attached to the inner wall of the conjunction groove, fur entering the guide chamber can be attached to the surface of the fan blades under the clockwise rotation of the guide fan, then falls into the material collecting chamber under the action of gravity;
the inner side of the dehydrating sheet is fixedly connected with a water squeezing lug which is attached to the water absorbing layer, the tail end of the dehydrating sheet is fixedly connected with a water guide plate, and the tail end of the water guide plate is positioned in the water pipe;
the upper end of the shell is communicated with a feeding box, and the front side of the shell is provided with an access door;
the method comprises the following steps that firstly, fallen fur in the cleaning production process of leather is collected and poured into a feeding box, the fur in the feeding box falls onto a water absorption layer under the action of gravity, then the fur can move downwards and fall into an air drying chamber through a discharge pipe through the work of a conveyor belt, the conveyor belt can extrude the fur during the work at the same time, namely, the water absorption layer can preliminarily dry the fur, when the fur does not fall into the air drying chamber under the action of gravity, the fur remained on the water absorption layer can be separated and fall downwards under the action of a stripping sheet, when the water absorption layer passes through the stripping sheet, the water absorption layer can be extruded under the action of a water squeezing lug, namely, water in the water absorption layer can be shunted, and then the water is guided to flow into a water pipe under the action of a water guide plate; can make its inside air flow because of fan and blast pipe after the hair is in the air-dry chamber, and it is oval-shaped design to answer its air-dry chamber, thereby be convenient for wind-force to carry the fur at the air-dry indoor internal rotation, can be because of the work of air exhauster after the fur is dry, the fur that makes the inside wind-force of blast pipe carry gets into the passage, thereby make its dry fur get into the guide chamber, the fur that gets into the guide chamber can make its fur adhere to the surface at the flabellum under the clockwise rotation of guide fan, then fall into the collecting chamber under the effect of gravity, thereby the completion is placed the collection of fur.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308146.8A CN111440904B (en) | 2020-04-18 | 2020-04-18 | Be used for leather clean production environmental protection material placement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308146.8A CN111440904B (en) | 2020-04-18 | 2020-04-18 | Be used for leather clean production environmental protection material placement equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111440904A CN111440904A (en) | 2020-07-24 |
| CN111440904B true CN111440904B (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010308146.8A Active CN111440904B (en) | 2020-04-18 | 2020-04-18 | Be used for leather clean production environmental protection material placement equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN111440904B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112568451B (en) * | 2020-12-07 | 2022-07-15 | 千健(苏州)医疗科技有限公司 | Processing equipment for removing leather clothing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838042A1 (en) * | 1987-11-23 | 1989-06-01 | Sagitta Spa | Supporting bed for machines for shoe factories, especially for leather-chamfering machines |
| CN206540396U (en) * | 2017-03-06 | 2017-10-03 | 江苏益客羽绒制品有限公司 | A kind of eider down hot-air drying device |
| CN108130390A (en) * | 2018-02-22 | 2018-06-08 | 宁夏西部皮草有限公司 | Villus tailing processing system and fur processing system |
| CN108168223A (en) * | 2017-12-26 | 2018-06-15 | 湛江紫荆羽绒制品有限公司 | A kind of squash type Eiderdown oven-dry device |
| CN208916785U (en) * | 2018-08-19 | 2019-05-31 | 天津市康瑞药业有限公司 | Bottom of bottle de-watering apparatus is used on a kind of canning line |
| CN209820091U (en) * | 2019-03-06 | 2019-12-20 | 赤水市幸福源生物科技股份有限公司 | Microbial organic fertilizer's dewatering equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207180239U (en) * | 2017-09-26 | 2018-04-03 | 安徽芙芮雅羽绒有限公司 | Dryer for down production |
-
2020
- 2020-04-18 CN CN202010308146.8A patent/CN111440904B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838042A1 (en) * | 1987-11-23 | 1989-06-01 | Sagitta Spa | Supporting bed for machines for shoe factories, especially for leather-chamfering machines |
| CN206540396U (en) * | 2017-03-06 | 2017-10-03 | 江苏益客羽绒制品有限公司 | A kind of eider down hot-air drying device |
| CN108168223A (en) * | 2017-12-26 | 2018-06-15 | 湛江紫荆羽绒制品有限公司 | A kind of squash type Eiderdown oven-dry device |
| CN108130390A (en) * | 2018-02-22 | 2018-06-08 | 宁夏西部皮草有限公司 | Villus tailing processing system and fur processing system |
| CN208916785U (en) * | 2018-08-19 | 2019-05-31 | 天津市康瑞药业有限公司 | Bottom of bottle de-watering apparatus is used on a kind of canning line |
| CN209820091U (en) * | 2019-03-06 | 2019-12-20 | 赤水市幸福源生物科技股份有限公司 | Microbial organic fertilizer's dewatering equipment |
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|---|---|
| CN111440904A (en) | 2020-07-24 |
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Effective date of registration: 20231213 Address after: 510000, 1st and 2nd floors, Building E, North Aimin East Economic Society, Shanqian Avenue, Shiling Town, Huadu District, Guangzhou City, Guangdong Province, China Patentee after: Guangzhou Lifu Leather Co.,Ltd. Address before: 211800 College of Environmental Science and Engineering,Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing City, Jiangsu Province Patentee before: Xue Chunzhong |
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