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CN109262898A - A kind of Waste ammunition plastic shell disintegrating apparatus - Google Patents

A kind of Waste ammunition plastic shell disintegrating apparatus Download PDF

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Publication number
CN109262898A
CN109262898A CN201811275141.9A CN201811275141A CN109262898A CN 109262898 A CN109262898 A CN 109262898A CN 201811275141 A CN201811275141 A CN 201811275141A CN 109262898 A CN109262898 A CN 109262898A
Authority
CN
China
Prior art keywords
cabinet
wall
partition
plate
movable plate
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.)
Withdrawn
Application number
CN201811275141.9A
Other languages
Chinese (zh)
Inventor
王骐波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Ya Ding Technology Co Ltd
Original Assignee
Zhejiang Ya Ding Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Ya Ding Technology Co Ltd filed Critical Zhejiang Ya Ding Technology Co Ltd
Priority to CN201811275141.9A priority Critical patent/CN109262898A/en
Publication of CN109262898A publication Critical patent/CN109262898A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04Disintegrating plastics, e.g. by milling
    • B29B17/0412Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02Separating plastics from other materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02Separating plastics from other materials
    • B29B2017/0213Specific separating techniques
    • B29B2017/0217Mechanical separating techniques; devices therefor
    • B29B2017/0224Screens, sieves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02Separating plastics from other materials
    • B29B2017/0213Specific separating techniques
    • B29B2017/0268Separation of metals
    • B29B2017/0272Magnetic separation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04Disintegrating plastics, e.g. by milling
    • B29B2017/0424Specific disintegrating techniques; devices therefor
    • B29B2017/0476Cutting or tearing members, e.g. spiked or toothed cylinders or intermeshing rollers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/52Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention belongs to waste recycling fields, in particular disclose a kind of Waste ammunition plastic shell disintegrating apparatus, including cabinet, partition is fixedly connected in the middle part of the inner wall of the cabinet, and the inner wall of cabinet is located above partition and is symmetrically installed with pulverization roller, the top edge of partition symmetrically offers port, array is fixedly installed with electromagnetism iron staff in port, the inner wall of the cabinet, which is located at below partition, is slidably fitted with movable plate, the top side of movable plate offers truncated cone-shaped drainage trough, the center of truncated cone-shaped drainage trough offers grinding groove, vibrator is symmetrically fixedly installed between the bottom side of movable plate and the inner wall of cabinet, shaft is rotatably equipped between the bottom side center of the partition and the inner bottom wall of cabinet.Structure of the invention is novel, easy to use, can remove the iron tramp in waste product, guarantees the abundant crushing of plastics, while can carry out sifting sort to plastics, to improve plastic crushing efficiency.

Description

A kind of Waste ammunition plastic shell disintegrating apparatus
Technical field
The present invention relates to waste recovery technical field more particularly to a kind of Waste ammunition plastic shell disintegrating apparatus.
Background technique
It comes out with the development of science and technology, plastic product is constantly expanded, because it is at low cost, and uses extensively, gradually Plastic product gradually is be unable to do without in our life, but simultaneously daily also can there are many plastic products discarded, for useless If the plastics of abandoning deal with the environment that will be destroyed around us improperly, incineration of plastic influences whether our health, thus moulds Material recycling can reduce its influence.
Plastic shredding device is typically used in waste and old factory at present to crush to plastics, to facilitate recycling, still Existing disintegrating apparatus is insufficient to plastic crushing, can not remove the iron class waste product mixed in plastics, increase the abrasion of equipment, And smashed plastics can not be screened, we design a kind of Waste ammunition plastic shell crushing thus Equipment solves the above problems.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of Waste ammunition modeling proposed Expect shell disintegrating apparatus.
To achieve the goals above, present invention employs following technical solutions:
The inner wall middle part of a kind of Waste ammunition plastic shell disintegrating apparatus, including cabinet, the cabinet is fixedly connected There is a partition, and the inner wall of cabinet is located above partition and is symmetrically installed with pulverization roller, the top edge of partition symmetrically offers logical Mouthful, array is fixedly installed with electromagnetism iron staff in port, and the inner wall of the cabinet, which is located at below partition, is slidably fitted with movable plate, The top side of movable plate offers truncated cone-shaped drainage trough, and the center of truncated cone-shaped drainage trough offers grinding groove, the bottom side of movable plate and It is symmetrically fixedly installed with vibrator between the inner wall of cabinet, rotates peace between the bottom side center of the partition and the inner bottom wall of cabinet Equipped with shaft, the top fixing sleeve that the outer wall of shaft is located at movable plate is connected to top in shape mixing roll, top in shape mixing roll and grinding Slot is adapted, and the outside that the bottom end of the shaft extends to cabinet is fixedly connected on the output shaft of servo motor, servo motor It is fixedly mounted in the exterior bottom wall of cabinet, is connected in the bottom end of the grinding groove and cabinet, the bottom side of the movable plate is fixed Tubular strainer is installed, the bottom end of tubular strainer is rotatably equipped with lantern ring, and the bottom end of grinding groove is located in tubular strainer, shaft Outer wall, which is located at below tubular strainer, is fixedly connected with fixed plate, and the bottom side of fixed plate is fixedly installed with push-rod electric machine, push rod electricity The push rod end of machine, which extends to, is fixedly connected with lifter plate above fixed plate, lifter plate and shaft are slidably connected, and lifter plate Top side be symmetrically welded with gag lever post, block plate is slidably fitted between two gag lever posts, block plate and shaft are slidably connected, gag lever post Top extend to and be welded with fixture block above block plate, the outer wall of gag lever post is arranged with spring between lifter plate and block plate.
Preferably, the roof center of the cabinet is equipped with feed inlet, and the side wall of cabinet, which is located above partition, to be symmetrically installed There is blower device, the inner bottom wall of cabinet is skewed.
Preferably, two pulverization rollers are connected with driving mechanism, and the quantity of the electromagnetism iron staff is five to ten, and electricity Bar magnet is connected with working power.
Preferably, the block plate is extruded in the bottom side of lantern ring, and the diameter of block plate is greater than the diameter of tubular strainer.
Preferably, the inner bottom wall lowest point that the sidewall bottom of the cabinet is located at cabinet is equipped with discharge port.
Preferably, the top side of the partition is fixedly connected with triangular prism shaped drainage plate between two pulverization rollers.
Compared with prior art, the beneficial effects of the present invention are:
In the present invention, the iron in waste product can be adsorbed by the design of electromagnetism iron staff, reduce the abrasion of equipment, led to Cross the design of movable plate, vibrator, shaft, top in shape mixing roll, grinding groove and servo motor, it can be ensured that plastics are sufficient Crush, by the design of tubular strainer, fixed plate, push-rod electric machine, lifter plate, gag lever post, block plate and spring, can be to crushing after Plastics screened.
In conclusion structure of the invention is novel, and it is easy to use, the iron tramp in waste product can be removed, guarantees filling for plastics Divide and crush, while sifting sort can be carried out to plastics, to improve plastic crushing efficiency.
Detailed description of the invention
Fig. 1 is that a kind of main view of Waste ammunition plastic shell disintegrating apparatus proposed by the present invention dissects structural representation Figure;
Fig. 2 is enlarged drawing at the A of Fig. 1;
Fig. 3 is a kind of movable plate plan structure signal of Waste ammunition plastic shell disintegrating apparatus proposed by the present invention Figure.
In figure: 1 cabinet, 2 partitions, 3 pulverization rollers, 4 ports, 5 electromagnetism iron staffs, 6 movable plates, 7 vibrators, 8 shafts, 9 gyros Shape mixing roll, 10 grinding grooves, 11 servo motors, 12 tubular strainers, 13 fixed plates, 14 push-rod electric machines, 15 lifter plates, 16 limits Bar, 17 block plates, 18 springs, 19 feed inlets, 20 blower devices, 21 discharge ports.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, Unless otherwise specifically defined.
Referring to Fig.1-3, a kind of Waste ammunition plastic shell disintegrating apparatus, including cabinet 1, the inner wall middle part of cabinet 1 It is fixedly connected with partition 2, and the inner wall of cabinet 1 is located at the top of partition 2 and is symmetrically installed with pulverization roller 3, the top edge of partition 2 Port 4 symmetrically is offered, array is fixedly installed with electromagnetism iron staff 5 in port 4, and the inner wall of cabinet 1 is located at the lower section sliding of partition 2 Movable plate 6 is installed, the top side of movable plate 6 offers truncated cone-shaped drainage trough, and the center of truncated cone-shaped drainage trough offers grinding groove 10, vibrator 7, the bottom side center of partition 2 and cabinet 1 are symmetrically fixedly installed between the bottom side of movable plate 6 and the inner wall of cabinet 1 Inner bottom wall between be rotatably equipped with shaft 8, the top fixing sleeve that the outer wall of shaft 8 is located at movable plate 6 is connected to top in shape grinding Roller 9, top in shape mixing roll 9 and grinding groove 10 are adapted, and the outside that the bottom end of shaft 8 extends to cabinet 1 is fixedly connected on servo On the output shaft of motor 11, servo motor 11 is fixedly mounted in the exterior bottom wall of cabinet 1, in the bottom end and cabinet 1 of grinding groove 10 It is connected, the bottom side of movable plate 6 is fixedly installed with tubular strainer 12, and the bottom end of tubular strainer 12 is rotatably equipped with lantern ring, grinding The bottom end of slot 10 is located in tubular strainer 12, and the lower section that the outer wall of shaft 8 is located at tubular strainer 12 is fixedly connected with fixed plate 13, The bottom side of fixed plate 13 is fixedly installed with push-rod electric machine 14, and the top that the push rod end of push-rod electric machine 14 extends to fixed plate 13 is solid Surely it is connected with lifter plate 15, lifter plate 15 and shaft 8 are slidably connected, and the top side of lifter plate 15 is symmetrically welded with gag lever post 16, Block plate 17 is slidably fitted between two gag lever posts 16, block plate 17 and shaft 8 are slidably connected, and the top of gag lever post 16 extends to gear The top of disk 17 is welded with fixture block, and the outer wall of gag lever post 16 is arranged with spring 18, cabinet 1 between lifter plate 15 and block plate 17 Roof center be equipped with feed inlet 19, the top that the side wall of cabinet 1 is located at partition 2 is symmetrically installed with blower device 20, cabinet 1 Inner bottom wall be it is skewed, two pulverization rollers 3 are connected with driving mechanism, and the quantity of electromagnetism iron staff 5 is five to ten, and electromagnetism iron staff 5 are connected with working power, and block plate 17 is extruded in the bottom side of lantern ring, and the diameter of block plate 17 is greater than the diameter of tubular strainer 12, case The inner bottom wall lowest point that the sidewall bottom of body 1 is located at cabinet 1 is equipped with discharge port 21, the top side of partition 2 be located at two pulverization rollers 3 it Between be fixedly connected with triangular prism shaped drainage plate, in the present invention, the iron in waste product can be inhaled by the design of electromagnetism iron staff 5 It is attached, reduce the abrasion of equipment, passes through movable plate 6, vibrator 7, shaft 8, top in shape mixing roll 9, grinding groove 10 and servo motor 11 design, it can be ensured that plastics are adequately crushed, and tubular strainer 12, fixed plate 13, push-rod electric machine 14, lifter plate are passed through 15, the design of gag lever post 16, block plate 17 and spring 18 can screen smashed plastics, in conclusion knot of the present invention Structure is novel, easy to use, can remove the iron tramp in waste product, guarantee the abundant crushing of plastics, while can carry out to plastics Sifting sort, to improve plastic crushing efficiency.
Working principle: in use, plastic waste material is added in cabinet 1 from feed inlet 19, plastic waste material is by pulverization roller 3 The top side for dropping into movable plate 6 after preliminary crushing by port 4, iron tramp during plastics pass through port 4, in plastics It is attracted to the surface of electromagnetism iron staff 5, blower device 20 starts at this time, can further separate plastics and iron tramp, plastics When dropping into the top side of movable plate 6, since servo motor 11 drives shaft 8 to rotate, shaft 8 drives top in shape mixing roll 9 to rotate, So that plastics are further ground by top in shape mixing roll 9, smashed plastics are entered in tubular strainer 12, at this time two A vibrator 7 works so that waste material is screened by tubular strainer 12, and the waste material after screening is discharged by discharge port 21, when compared with When the plastics of bulky grain need to be discharged, the push rod of push-rod electric machine 14 is shunk so that block plate 17 and tubular strainer 12 separate, waste material from The bottom end of tubular strainer 12 is discharged, and when needing that iron tramp is discharged, electromagnetism iron staff 5 is powered off, and blower device 20 blows off iron tramp, Facilitate its discharge.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (6)

1. a kind of Waste ammunition plastic shell disintegrating apparatus, including cabinet (1), which is characterized in that the cabinet (1) it is interior It is fixedly connected with partition (2) in the middle part of wall, and the inner wall of cabinet (1) is located above partition (2) and is symmetrically installed with pulverization roller (3), The top edge of partition (2) symmetrically offers port (4), and port (4) interior array is fixedly installed with electromagnetism iron staff (5), the case The inner wall of body (1), which is located at below partition (2), is slidably fitted with movable plate (6), and the top side of movable plate (6) offers truncated cone-shaped and draws Chute, the center of truncated cone-shaped drainage trough offer grinding groove (10), right between the bottom side of movable plate (6) and the inner wall of cabinet (1) Title is fixedly installed with vibrator (7), is rotatably equipped between the bottom side center of the partition (2) and the inner bottom wall of cabinet (1) Axis (8), the top fixing sleeve that the outer wall of shaft (8) is located at movable plate (6) are connected to top in shape mixing roll (9), top in shape mixing roll (9) it is adapted with grinding groove (10), the outside that the bottom end of the shaft (8) extends to cabinet (1) is fixedly connected on servo motor (11) on output shaft, servo motor (11) is fixedly mounted in the exterior bottom wall of cabinet (1), the bottom end of the grinding groove (10) and It is connected in cabinet (1), the bottom side of the movable plate (6) is fixedly installed with tubular strainer (12), the bottom end of tubular strainer (12) It is rotatably equipped with lantern ring, the bottom end of grinding groove (10) is located in tubular strainer (12), and the outer wall of shaft (8) is located at tubular strainer (12) it is fixedly connected with below fixed plate (13), the bottom side of fixed plate (13) is fixedly installed with push-rod electric machine (14), push rod electricity The push rod end of machine (14), which extends to above fixed plate (13), to be fixedly connected with lifter plate (15), lifter plate (15) and shaft (8) it is slidably connected, and the top side of lifter plate (15) is symmetrically welded with gag lever post (16), is slidably installed between two gag lever posts (16) Have block plate (17), block plate (17) and shaft (8) are slidably connected, and the top of gag lever post (16) extends to the top welding of block plate (17) There is fixture block, the outer wall of gag lever post (16), which is located between lifter plate (15) and block plate (17), is arranged with spring (18).
2. a kind of Waste ammunition plastic shell disintegrating apparatus according to claim 1, which is characterized in that the cabinet (1) roof center is equipped with feed inlet (19), and the side wall of cabinet (1), which is located above partition (2), is symmetrically installed with blower device (20), the inner bottom wall of cabinet (1) is skewed.
3. a kind of Waste ammunition plastic shell disintegrating apparatus according to claim 1, which is characterized in that described in two Pulverization roller (3) is connected with driving mechanism, and the quantity of the electromagnetism iron staff (5) is five to ten, and electromagnetism iron staff (5) is connected with work Make power supply.
4. a kind of Waste ammunition plastic shell disintegrating apparatus according to claim 1, which is characterized in that the block plate (17) it is extruded in the bottom side of lantern ring, and the diameter of block plate (17) is greater than the diameter of tubular strainer (12).
5. a kind of Waste ammunition plastic shell disintegrating apparatus according to claim 2, which is characterized in that the cabinet (1) the inner bottom wall lowest point that sidewall bottom is located at cabinet (1) is equipped with discharge port (21).
6. a kind of Waste ammunition plastic shell disintegrating apparatus according to claim 2, which is characterized in that the partition (2) top side is fixedly connected with triangular prism shaped drainage plate between two pulverization rollers (3).
CN201811275141.9A 2018-10-30 2018-10-30 A kind of Waste ammunition plastic shell disintegrating apparatus Withdrawn CN109262898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811275141.9A CN109262898A (en) 2018-10-30 2018-10-30 A kind of Waste ammunition plastic shell disintegrating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811275141.9A CN109262898A (en) 2018-10-30 2018-10-30 A kind of Waste ammunition plastic shell disintegrating apparatus

Publications (1)

Publication Number Publication Date
CN109262898A true CN109262898A (en) 2019-01-25

Family

ID=65194577

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811275141.9A Withdrawn CN109262898A (en) 2018-10-30 2018-10-30 A kind of Waste ammunition plastic shell disintegrating apparatus

Country Status (1)

Country Link
CN (1) CN109262898A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111775375A (en) * 2020-05-29 2020-10-16 余汉锡 Waste plastic shell reducing mechanism
CN111875149A (en) * 2020-07-03 2020-11-03 季丹萍 Oil-containing and slag-containing wastewater treatment system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111775375A (en) * 2020-05-29 2020-10-16 余汉锡 Waste plastic shell reducing mechanism
CN111875149A (en) * 2020-07-03 2020-11-03 季丹萍 Oil-containing and slag-containing wastewater treatment system
CN111875149B (en) * 2020-07-03 2022-07-15 季丹萍 Oil-containing and slag-containing wastewater treatment system

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WW01 Invention patent application withdrawn after publication

Application publication date: 20190125

WW01 Invention patent application withdrawn after publication