CN108002037B - Full-automatic PVC powder centralized negative pressure feeding system - Google Patents

Full-automatic PVC powder centralized negative pressure feeding system Download PDF

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Publication number
CN108002037B
CN108002037B CN201711182945.XA CN201711182945A CN108002037B CN 108002037 B CN108002037 B CN 108002037B CN 201711182945 A CN201711182945 A CN 201711182945A CN 108002037 B CN108002037 B CN 108002037B
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China
Prior art keywords
negative pressure
automatic
pvc powder
conveying
centralized
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CN201711182945.XA
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CN108002037A (en
Inventor
李建军
齐文良
左攀
曹奇
李东
叶南飚
莫凡
黄啸鹏
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Kingfa Science and Technology Co Ltd
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Kingfa Science and Technology Co Ltd
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Priority to CN201711182945.XA priority Critical patent/CN108002037B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/16Gas pressure systems operating with fluidisation of the materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/36Arrangements of containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • B65G53/46Gates or sluices, e.g. rotary wheels
    • B65G53/4608Turnable elements, e.g. rotary wheels with pockets or passages for material
    • B65G53/4625Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

The invention relates to the technical field of modified plastic production equipment, in particular to a full-automatic negative pressure feeding system. The invention discloses a full-automatic PVC powder centralized negative pressure feeding system, which comprises a conveying pipeline, a plurality of high-speed mixers arranged on an extrusion production line and a controller for controlling the feeding amount of PVC powder, wherein the conveying pipeline conveys the PVC powder into the high-speed mixers; the automatic material distributing device is used for conveying PVC powder to the high-speed mixer under the action of vacuum negative pressure. According to the invention, the materials packaged by the ton bags are added into the centralized storage device, PVC powder is conveyed to a plurality of automatic material distribution devices through one centralized storage device, the materials are added into the weighing bin according to the weight set by the control system by controlling the rotating speed of the material distribution screw, and the materials in the weighing bin are added into the high-speed mixer after the correct weight of the materials is confirmed according to the reading feedback of the weighing instrument in the weighing bin, so that the automatic feeding of the powder materials is realized.

Description

Full-automatic PVC powder centralized negative pressure feeding system
Technical Field
The invention relates to the technical field of modified plastic production equipment, in particular to a full-automatic PVC powder centralized negative pressure feeding system.
Background
At present, in PVC pipe production, most of production raw materials are dust substances; the production line of most of modified plastic production enterprises in China is still completed by manual operation of workers in the raw material weighing and proportioning link. The manual feeding mode clearly brings a series of problems for enterprises, such as high labor intensity, large fluctuation of product quality, serious site environmental pollution, no traceability of the production process and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a full-automatic PVC powder centralized negative pressure feeding system which realizes full-automatic feeding of raw material batching links of a modified PVC production line.
In order to solve the technical problems, the invention adopts the following technical scheme:
the full-automatic PVC powder centralized negative pressure feeding system comprises a conveying pipeline, a plurality of high-speed mixers arranged on an extrusion production line and a controller for controlling the feeding amount of PVC powder, wherein the conveying pipeline conveys the PVC powder to the high-speed mixers; the PVC powder mixing device comprises a high-speed mixer, a centralized storage device and a plurality of automatic material distributing devices for conveying PVC powder to the high-speed mixer under the action of vacuum negative pressure, wherein the bottom of the centralized storage device is provided with a plurality of material conveying devices for conveying PVC powder to the automatic material distributing devices under the action of vacuum negative pressure; the centralized storage device and the automatic material distributing device are connected with the controller.
According to the full-automatic PVC powder centralized negative pressure feeding system, materials packaged by ton bags are added into the centralized storage device, the materials are conveyed into the automatic distribution device under the action of vacuum negative pressure through the conveying pipeline, PVC powder is conveyed to a plurality of automatic distribution devices through each group of centralized storage devices, the same type of PVC powder is conveyed to the automatic distribution devices on a plurality of production lines at the same time, and the materials are conveyed into the high-speed mixer through the automatic distribution devices, so that the automatic feeding of powder materials is realized, and a series of problems of high labor intensity of workers, large fluctuation of product quality, serious site environmental pollution, no traceability in the production process and the like caused by manual feeding are solved.
Further, concentrate storage device including going to hang, throw material station, gas material separator and concentrate the storage silo, it can promote ton bag packing's PVC powder extremely to throw the top of material station to hang, throw the material station with connect through pipeline between the gas material separator, gas material separator with concentrate and be connected with the rotary valve who arranges the material in succession between the storage silo. The crane is used for lifting the ton bag packaged materials to the upper part of the feeding station, throwing the ton bag packaged materials into the feeding station, conveying the materials in the feeding station to the gas-material separator under the action of vacuum negative pressure through the conveying pipeline, and continuously adding the materials in the gas-material separator into the centralized storage bin through the rotary valve.
Preferably, the rotary valve is of a valve structure made of stainless steel, and the discharge amount of the rotary valve is 4000L-8000L. The discharge amount of the rotary valve is determined according to the number of production lines, the production capacity and the mass flow rate of the PVC powder.
Preferably, a filter connected with a central dust removal system of the production workshop is arranged at the rear of the feeding station. Because the materials are all powder, a filter is arranged at the rear of the feeding station and is connected with a central dust removing system, so that dust in the feeding process is prevented from flying.
Preferably, the gas-material separator is provided with a polyester cotton filter layer, a first fan and a first gas bag for back blowing compressed air, the polyester cotton filter layer is arranged inside the gas-material separator, and the first fan and the first gas bag are communicated with the gas-material separator; valves are arranged between the first fan and the gas-material separator, and between the first gas bag and the gas-material separator. The polyester cotton filter layer in the gas-material separator realizes gas-material separation under the action of vacuum negative pressure, and the valve is started to blow back the polyester cotton filter layer after each charging is finished to prevent the blockage of the polyester cotton filter layer; the filtering precision and the filtering area of the polyester cotton filter layer are set according to the size of the material particles.
Preferably, a conveying hopper is connected below the centralized storage bin, and a plurality of conveying devices are arranged on the conveying hopper. The materials separated by the gas and the materials fall into a conveying hopper, and then the materials are conveyed to the automatic material distributing devices of a plurality of production lines simultaneously under the action of vacuum negative pressure by the material conveying device.
Further, the automatic material distributing device comprises a negative pressure material sucking tank, an automatic material distributing scale and a weighing bin which are sequentially connected through a conveying pipeline, wherein the negative pressure material sucking tank is connected with the material conveying device, and the weighing bin is matched with the high-speed mixer; the negative pressure suction tank with be equipped with first electronic push-pull valve between the conveyer, weigh the storehouse with be equipped with the second electronic push-pull valve between the high mixer. The controller controls to open a first electric gate valve, PVC powder enters a negative pressure suction tank under the action of vacuum negative pressure, a valve of the negative pressure suction tank is opened, the materials enter automatic material distribution scales, and the materials in each automatic material distribution scale fall into a weighing bin; the controller controls to open the second electric gate valve, and materials enter the high-speed mixer from the weighing bin to be mixed and dispersed.
Preferably, the negative pressure suction tank is provided with a second fan for supplying power for PVC raw material conveying and a second air bag for back blowing compressed air. The second air bag is equipped with and carries out blowback in the negative pressure suction tank after the end of each charging, prevents to locate on the negative pressure suction tank that feed inlet and discharge gate from taking place to block up.
Preferably, a material distributing screw rod for controlling the blanking speed of the PVC powder is arranged in the automatic material distributing scale, and the material distributing screw rod is connected with the controller. The rotating speed of the material distributing screw rod is controlled in linkage with the weighing instrument signal of the weighing bin, materials are added into the weighing bin according to the weight set by the control system by controlling the rotating speed of the material distributing screw rod, and after the correct weight of the materials is confirmed according to the reading feedback of the weighing instrument in the weighing bin, the materials in the weighing bin are added into the high-speed mixer, so that the automatic addition of powder materials is realized.
Preferably, the conveying pipeline is of a pipeline structure made of stainless steel, and the diameter of the pipeline is 60-100 mm. The diameter of the delivery conduit is calculated according to the following formula:
wherein D is the diameter of the conveying pipeline and m; q is the flow rate of the gas,the method comprises the steps of carrying out a first treatment on the surface of the V is the gas flow rate, ">
Compared with the prior art, the invention has the beneficial effects that:
the PVC powder is simultaneously conveyed to the automatic material distribution devices on a plurality of production lines and then conveyed to the high-speed mixer by the automatic powder device; in addition, the rotating speed of the material distributing screw rod is controlled in linkage with a weighing instrument signal of the weighing bin, materials are added into the weighing bin according to the weight set by the control system by controlling the rotating speed of the material distributing screw rod, and after the correct weight of the materials is confirmed according to the reading feedback of the weighing instrument in the weighing bin, the materials in the weighing bin are added into a high-speed mixer, so that the automatic addition of powder materials is realized; thus solving a series of problems of high labor intensity of workers, large fluctuation of product quality, serious on-site environmental pollution, no traceability of production process and the like caused by manual feeding.
Drawings
Fig. 1 is a schematic structural diagram of a centralized storage device of a full-automatic PVC powder centralized negative pressure feeding system.
Fig. 2 is a schematic structural diagram of an automatic distributing device of the full-automatic PVC powder centralized negative pressure feeding system.
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Example 1
As shown in fig. 1 to 2, a first embodiment of the full-automatic PVC powder centralized negative pressure feeding system of the present invention includes a plurality of high-speed mixers arranged on an extrusion line and a controller for controlling the feeding amount of PVC powder; the PVC powder mixing device further comprises a centralized storage device 1 and a plurality of automatic material distributing devices 2 for conveying PVC powder to the high-speed mixer under the action of vacuum negative pressure, wherein the centralized storage device 1 is connected with the automatic material distributing devices 2 through conveying pipelines 3; the bottom of the centralized storage device 1 is provided with a plurality of material conveying devices 11 for conveying PVC powder to the automatic material distributing device 2 under the action of vacuum negative pressure; the centralized storage device 1 and the automatic distribution device 2 are both connected with a controller.
As shown in fig. 1, the centralized storage device 1 comprises a crane 12, a feeding station 13, a gas-material separator 14 and a centralized storage bin 15, wherein the crane 12 can lift PVC powder packaged by ton bags to the upper part of the feeding station, the feeding station 13 is connected with the gas-material separator 14 through a conveying pipeline, and a rotary valve 16 for continuously discharging is connected between the gas-material separator 14 and the centralized storage bin 15; the crane 12 drops the ton bag packaged materials into the feeding station 13, the materials in the feeding station 13 are conveyed into the gas-material separator 14 under the action of vacuum negative pressure through the conveying pipeline, the materials in the gas-material separator are continuously added into the centralized storage bin 15 through the rotary valve 16, and the materials are conveyed into the automatic distributing device 2 under the action of vacuum negative pressure.
Specifically, the rotary valve 16 is a valve structure made of stainless steel, the discharge amount of the rotary valve 16 is determined according to the number of production lines, the production capacity and the mass flow rate of PVC powder, and the discharge amount of the rotary valve 16 is 4000L-8000L; in order to prevent dust from flying in the feeding process, a filter connected with a central dust removal system of a production workshop is arranged behind the feeding station 13; in order to realize the gas-material separation of the conveyed materials, a polyester cotton filter layer is arranged in the gas-material separator 14, and the filtering precision and the filtering area of the polyester cotton filter layer are set according to the size of the particles of the materials; the first air bag 18 is arranged on the air-material separator 14, a valve is started after each feeding is finished to blow back the polyester cotton filter layer, the polyester cotton filter layer is prevented from being blocked, and the first fan 17 is arranged to provide power for conveying PVC powder. The conveying hopper 19 is connected to the lower portion of the centralized storage bin 15, the conveying hoppers 19 are arranged on the conveying hoppers 11, materials separated by gas and materials fall into the conveying hoppers 19, and the materials are conveyed to the automatic material distributing devices 2 of the production lines simultaneously under the action of vacuum negative pressure through the conveying devices 11.
As shown in fig. 2, the automatic material distributing device 2 comprises a negative pressure material sucking tank 21, an automatic material distributing scale 22 and a weighing bin 23 which are sequentially connected through a conveying pipeline, wherein the negative pressure material sucking tank 21 is connected with the material conveying device 11, and the weighing bin 23 is matched with a high-speed mixer; a first electric gate valve 24 is arranged between the negative pressure suction tank 21 and the material conveying device 11, and a second electric gate valve 25 is arranged between the weighing bin 23 and the high-speed mixer. The controller controls to open the first electric gate valve 24, materials enter the negative pressure suction tank 21 under the action of vacuum negative pressure, the valve of the negative pressure suction tank 21 is opened, the materials enter the automatic material distribution scales 22, the materials in each group of automatic material distribution scales 22 fall into the weighing bin 23, the controller controls to open the second electric gate valve 25, and the materials enter the high-speed mixer from the weighing bin 23 to be mixed and dispersed.
Wherein, the negative pressure suction tank 21 is provided with a second fan 26 for supplying power for PVC raw material transportation and a second air bag 27 for back blowing compressed air; a material distributing screw 28 for controlling the blanking speed of the PVC powder is arranged in the automatic material distributing scale 22, and the material distributing screw 28 is connected with a controller; the rotating speed of the material distributing screw 28 is controlled in linkage with the weighing instrument signal of the weighing bin 23, materials are added into the weighing bin 23 according to the weight set by a control system by controlling the rotating speed of the material distributing screw 28, and after the correct weight of the materials is confirmed according to the reading feedback of the weighing instrument in the weighing bin 23, the materials in the weighing bin 23 are added into a high-speed mixer, so that the automatic addition of powder materials is realized.
In the embodiment, the conveying pipeline 3 is of a pipeline structure made of stainless steel, and the diameter of the pipeline is 60-100 mm.
The full-automatic centralized negative pressure feeding system of the embodiment simultaneously conveys raw materials to six production lines, and the raw materials of the modified PVC production line are composed of six PVC types of PVC1, PVC2, PVC3, PVC4, PVC5 and PVC6 and CaCO 3 Composition is prepared. In the working process of the embodiment, seven groups of centralized storage devices 1 are used for respectively storing six PVC powder materials of PVC1, PVC2, PVC3, PVC4, PVC5 and PVC6 and CaCO 3 Powder, six PVC powder materials for preparing PVC1, PVC2, PVC3, PVC4, PVC5 and PVC6 and CaCO are arranged on each production line 3 The powder is conveyed to an automatic material distributing device 2 of the high-speed mixer, and the seven groups of centralized material storing devices are used for respectively storing six PVC powder materials of PVC1, PVC2, PVC3, PVC4, PVC5 and PVC6 and CaCO 3 The powder material is conveyed to an automatic material distributing device 2 on each production line, and each weighed material is conveyed to a high-speed mixer by the automatic material distributing device 2 for mixing. It should be noted that the raw materials provided by the invention are not limited to the above-mentioned PVC1, PVC2, PVC3, PVC4, PVC5, PVC6 and CaCO 3 Powder material.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (7)

1. A full-automatic PVC powder centralized negative pressure feeding system comprises a plurality of high-speed mixers arranged on an extrusion production line, a controller for controlling the feeding amount of PVC powder and a negative pressure device for forming vacuum negative pressure in the centralized negative pressure feeding system; the PVC powder mixing device is characterized by further comprising a centralized storage device (1) and a plurality of automatic material distribution devices (2) for conveying PVC powder to the high-speed mixer under the action of vacuum negative pressure, wherein the centralized storage device (1) is connected with the automatic material distribution devices (2) through conveying pipelines (3); the bottom of the centralized storage device (1) is provided with a plurality of material conveying devices (11) for conveying PVC powder to the automatic material distributing device under the action of vacuum negative pressure; the centralized storage device (1) and the automatic material distributing device (2) are connected with a controller; the automatic material distributing device (2) comprises a negative pressure material sucking tank (21), an automatic material distributing scale (22) and a weighing bin (23) which are sequentially connected through a conveying pipeline, wherein the negative pressure material sucking tank (21) is connected with the material conveying device (11), and the weighing bin (23) is matched with the high-speed mixer; a first electric gate valve (24) is arranged between the negative pressure suction tank (21) and the material conveying device (11), and a second electric gate valve (25) is arranged between the weighing bin (23) and the high-speed mixer; the negative pressure suction tank (21) is provided with a second fan (26) for supplying power for PVC raw material conveying and a second air bag (27) for back blowing compressed air; a material distributing screw rod used for controlling the blanking speed of the PVC powder is arranged in the automatic material distributing scale (22), and the material distributing screw rod is connected with a controller; the weighing bin (23) is provided with a weighing instrument, and the rotating speed of the material distributing screw is controlled in linkage with a signal of the weighing instrument.
2. The full-automatic PVC powder centralized negative pressure feeding system according to claim 1, wherein the centralized storage device (1) comprises a crane (12), a feeding station (13), a gas-material separator (14) and a centralized storage bin (15), the crane (12) can lift PVC powder packaged by ton bags to the upper part of the feeding station (13), the feeding station (13) is connected with the gas-material separator (14) through a conveying pipeline, and a rotary valve (16) for continuously discharging materials is connected between the gas-material separator (14) and the centralized storage bin (15).
3. The full-automatic PVC powder centralized negative pressure feeding system according to claim 2, wherein the rotary valve (16) is a valve structure made of stainless steel, and the discharge amount of the rotary valve (16) is 4000L-8000L.
4. The full-automatic PVC powder centralized negative pressure feeding system according to claim 2, wherein a filter connected with a central dust removal system of the production plant is provided at the rear of the feeding station (13).
5. The full-automatic PVC powder centralized negative pressure feeding system according to claim 2, wherein a polyester cotton filter layer, a first fan (17) and a first air bag (18) for back blowing compressed air are arranged on the air-material separator (14), the polyester cotton filter layer is arranged inside the air-material separator (14), and the first fan (17) and the first air bag (18) are communicated with the air-material separator (14); valves are arranged between the first fan (17) and the gas-material separator (14) and between the first gas bag (18) and the gas-material separator (14).
6. The full-automatic PVC powder centralized negative pressure feeding system according to claim 2, wherein a conveying hopper (19) is connected below the centralized storage bin (15), and a plurality of conveying devices (11) are arranged on the conveying hopper (19).
7. The full-automatic PVC powder centralized negative pressure feeding system according to claim 1, wherein the conveying pipeline (3) is of a pipeline structure made of stainless steel, and the diameter of the pipeline is 60-100 mm.
CN201711182945.XA 2017-11-23 2017-11-23 Full-automatic PVC powder centralized negative pressure feeding system Active CN108002037B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109110505B (en) * 2018-09-18 2024-06-07 江苏金发科技新材料有限公司 Automatic color master batch feeding equipment and feeding process
CN109516214A (en) * 2018-11-30 2019-03-26 西安铂力特增材技术股份有限公司 The powder automatic conveying device of SLM device
CN109878055B (en) * 2019-04-02 2023-10-10 黑龙江林海华安新材料股份有限公司 Premixing PVC powder high-position airtight feeding system
CN110171115A (en) * 2019-06-28 2019-08-27 宁夏华生管道科技有限公司 A kind of PVC pipe automatically concentrates feed production system and method

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CN105058615A (en) * 2015-07-20 2015-11-18 江苏锐升新材料有限公司 Automatic mixing system for polyvinyl chloride (PVC) floor production line and application thereof
CN105129431A (en) * 2015-08-31 2015-12-09 扬州金橡塑化工材料厂 Micorpowder wax automatic production line
CN205416286U (en) * 2016-03-16 2016-08-03 青岛同三塑料机械有限公司 Novel PVC automatic blending compounding feeding system
CN207957107U (en) * 2017-11-23 2018-10-12 金发科技股份有限公司 A kind of full-automatic PVC powder concentration negative pressure feeding system

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Publication number Priority date Publication date Assignee Title
CN105058615A (en) * 2015-07-20 2015-11-18 江苏锐升新材料有限公司 Automatic mixing system for polyvinyl chloride (PVC) floor production line and application thereof
CN105129431A (en) * 2015-08-31 2015-12-09 扬州金橡塑化工材料厂 Micorpowder wax automatic production line
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CN207957107U (en) * 2017-11-23 2018-10-12 金发科技股份有限公司 A kind of full-automatic PVC powder concentration negative pressure feeding system

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