CN207983937U - Environment friendly and pollution-free plastic tube production system - Google Patents
Environment friendly and pollution-free plastic tube production system Download PDFInfo
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- CN207983937U CN207983937U CN201820310123.9U CN201820310123U CN207983937U CN 207983937 U CN207983937 U CN 207983937U CN 201820310123 U CN201820310123 U CN 201820310123U CN 207983937 U CN207983937 U CN 207983937U
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- plastic tube
- taste removal
- dedusting
- tank
- removal tank
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Abstract
A kind of environment friendly and pollution-free plastic tube production system,Including feeding device,Extrusion device,Molding die,Cooling device,Dedusting deodorizing device,Dedusting deodorizing device includes tracheae,Air pump,Dedusting taste removal tank,Dedusting taste removal tank is the closed tank of hollow cylinder,In the inside sandwich establishment sleeve of dedusting taste removal tank,Interlayer sleeve is the hollow cylinder of upper and lower opening,Interlayer sleeve is arranged concentrically in the inside of dedusting taste removal tank,It is not connected at the top of the top of interlayer sleeve and dedusting taste removal tank,To form air ventilation passage,The bottom of interlayer sleeve and the bottom of dedusting taste removal tank are not connected to,To form fluid flow paths,Collection is filtered to irritative gas by the way that dedusting taste removal tank is arranged in the utility model,Upper filled layer and lower filled layer in dedusting taste removal tank are filtered absorption to gas and liquid respectively and collect,Pass through two-step method and binary partition method,Realize the isolation of purified processing of gas and liquid.
Description
Technical field
The utility model is related to plastic tube production technical field more particularly to a kind of environment friendly and pollution-free plastic tube production systems
System.
Background technology
In the production process of plastic tube, plastic tube is formed after being melted at a temperature of 100 DEG C or so, in fusion process,
Or in forming process, there are the mixed gas of some penetrating odors in raw material powder, after shaping, from outer tube wall and inner tube
Wall releases, and causes the pollution to ambient enviroment and the harm to operating personnel's health.
Invention content
It is necessary to propose that a kind of irritative gas discharged to plastic tube is collected the environment friendly and pollution-free plastic tube of processing
Production system.
A kind of environment friendly and pollution-free plastic tube production system, including feeding device, extrusion device, molding die, cooling device,
The mixture for being used to form plastic tube is held inside feeding device, material outlet is arranged in the bottom of feeding device, and the material goes out
Mouth is connect with the entrance of extrusion device, and the outlet of extrusion device is connect with the feeding mouth of molding die one end, is filled with passing through to squeeze out
It sets and the mixture of molten state is squeezed into molding die, the runner for forming plastic tube is set inside molding die, so that molten state
Mixture forms plastic tube along runner, and the plastic tube outlet of the molding die other end is exported for plastic tube after molding, cooling
One end of device opens up the entrance entered for plastic tube, and the other end of cooling device is for exporting plastic tube, in cooling device
Circulated sprinkling water pipe of portion's setting for cooling plastic pipe, molding die includes outer mold, interior mold, and outer mold is hollow mold
Set, the portion of runner that the setting of outer mold inside is flowed for the mixture of molten state, interior mold are embedded in the inside of outer mold, internal model
Gap is set between tool outer surface and outer mold inner surface, to form the portion of runner of plastic tube, interior mold is also hollow die sleeve,
The inside of the inner surface of interior mold forms the cavity to radiate for plastic tube, and the left end of cavity blocks, the right side end of cavity
It does not block, so that the inside of plastic tube after molding is connected to cavity inside, the environment friendly and pollution-free plastic tube production system is also
Including dedusting deodorizing device, dedusting deodorizing device includes tracheae, air pump, dedusting taste removal tank, one end of tracheae and interior mould inside
Cavity connection, the other end of tracheae connect with air pump, with by air pump by interior mold cavity inside and the gas of inside of plastic tubes
Body is extracted out, and is sent into dedusting taste removal tank, and dedusting taste removal tank is the closed tank of hollow cylinder, is opened at the top of dedusting taste removal tank
If exhaust outlet, discharge outlet is set in bottom, mixed gas entrance, the end of the tracheae are set on the side wall of dedusting taste removal tank
It is connected to mixed gas entrance along the tangential direction of tank wall, in the inside sandwich establishment sleeve of dedusting taste removal tank, interlayer
Sleeve is the hollow cylinder of upper and lower opening, and interlayer sleeve is arranged concentrically in the inside of dedusting taste removal tank, the top of interlayer sleeve with remove
It is not connected at the top of dirt taste removal tank, to form air ventilation passage, the bottom and the bottom of dedusting taste removal tank of interlayer sleeve do not connect
It connects, to form fluid flow paths, toroidal cavity, gaseous mixture is spaced between the side wall and the side wall of dedusting taste removal tank of interlayer sleeve
Body entrance is connected to the toroidal cavity, so that mixed gas enters toroidal cavity along the circumferential direction of interlayer sleeve, in ring
The upper filled layer of top setting of shape cavity, the filled layer under the setting of the bottom of toroidal cavity, upper filled layer are arranged in interlayer sleeve
Side wall and the side wall of dedusting taste removal tank between, to be filtered dedusting taste removal to gas, lower filled layer is arranged in interlayer sleeve
Side wall and the side wall of dedusting taste removal tank between, to be filtered absorption impurity to liquid, by lower filled layer filter liquid
By discharge outlet discharge centralized collection processing.
Collection is filtered to irritative gas by the way that dedusting taste removal tank is arranged in the utility model, in dedusting taste removal tank
Upper filled layer and lower filled layer are filtered absorption to gas and liquid respectively and collect, real by two-step method and binary partition method
The isolation of purified processing of gas and liquid is showed.
Description of the drawings
Fig. 1 is the structural schematic diagram of environment friendly and pollution-free plastic tube production system.
Fig. 2 is the internal structure schematic diagram of dedusting taste removal tank.
Fig. 3 is the internal structure schematic diagram for pre-processing tank.
Fig. 4 is the structural schematic diagram of coil pipe.
In figure：Feeding device 10, extrusion device 20, outer mold 31, interior mold 32, cavity 321, runner 33, cooling device
40, tracheae 51, air pump 52, dedusting taste removal tank 53, exhaust outlet 531, discharge outlet 532, mixed gas entrance 533, interlayer sleeve
534, toroidal cavity 535, upper filled layer 536, lower filled layer 537, water-cooling jacket layer 538, pretreatment tank 54, air inlet 541, row
Liquid mouth 542, gas outlet 543, coil pipe 544, heating long tube 55, isolation outer cover 56, the first outer tube 57, the second outer tube 58, servo electricity
Machine 61, blanking Starlike valve 62, thickness detection apparatus 63.
Specific implementation mode
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing.
Referring to Fig. 1, Fig. 2, the utility model embodiment provides a kind of environment friendly and pollution-free plastic tube production system, including upper
Expect device 10, extrusion device 20, molding die, cooling device 40, is held inside feeding device 10 and be used to form the mixed of plastic tube
Material is closed, material outlet is arranged in the bottom of feeding device 10, and the material outlet is connect with the entrance of extrusion device 20, extrusion device
20 outlet is connect with the feeding mouth of molding die one end, the mixture of molten state is squeezed into shaping mould by extrusion device 20
Head, the setting of molding die inside forms the runner 33 of plastic tube, so that the mixture of molten state forms plastic tube along runner, at
The plastic tube outlet of the pattern head other end is exported for plastic tube after molding, and one end of cooling device 40 is opened up to be entered for plastic tube
Entrance, the other end of cooling device 40 is for exporting plastic tube, and setting is for cooling plastic pipe inside cooling device 40
Circulated sprinkling water pipe, molding die include outer mold 31, interior mold 32, and outer mold 31 is hollow die sleeve, is set inside outer mold 31
The portion of runner of the mixture flowing for molten state is set, interior mold 32 is embedded in the inside of outer mold 31,32 outer surface of interior mold
Gap is set between 31 inner surface of outer mold, to form the portion of runner of plastic tube, interior mold 32 is also hollow die sleeve, internal model
The inside of the inner surface of tool 32 forms the cavity 321 to radiate for plastic tube, and the left end of cavity 321 blocks, the right side of cavity 321
Side head does not block, so that the inside of plastic tube after molding is connected to cavity inside, the environment friendly and pollution-free plastic tube production
System further includes dedusting deodorizing device, and dedusting deodorizing device includes tracheae 51, air pump 52, dedusting taste removal tank 53, and the one of tracheae 51
End is connected to the cavity inside interior mold 32, and the other end of tracheae 51 is connect with air pump 52, with by air pump 52 by interior mold 32
The gas of cavity inside and inside of plastic tubes is extracted out, and is sent into dedusting taste removal tank 53, and dedusting taste removal tank 53 is hollow cylinder
Closed tank opens up exhaust outlet 531 at the top of dedusting taste removal tank 53, discharge outlet 532 is arranged in bottom, in dedusting taste removal tank 53
Side wall on setting mixed gas entrance 533, the end of the tracheae 51 along tank wall tangential direction and mixed gas
Entrance 533 is connected to, and in the inside sandwich establishment sleeve 534 of dedusting taste removal tank 53, interlayer sleeve 534 is the hollow of upper and lower opening
Cylinder, interlayer sleeve 534 are arranged concentrically in the inside of dedusting taste removal tank 53, top and the dedusting taste removal tank 53 of interlayer sleeve 534
Top is not connected to, and to form air ventilation passage, the bottom and the bottom of dedusting taste removal tank 53 of interlayer sleeve 534 are not connected to, with
Fluid flow paths are formed, toroidal cavity 535 is spaced between the side wall and the side wall of dedusting taste removal tank 53 of interlayer sleeve 534, are mixed
It closes gas access 533 to be connected to the toroidal cavity 535, so that mixed gas enters along the circumferential direction of interlayer sleeve 534
Toroidal cavity 535, the upper filled layer 536 of setting at the top of toroidal cavity 535, is filled under the setting of the bottom of toroidal cavity 535
Layer 537, upper filled layer 536 is arranged between the side wall and the side wall of dedusting taste removal tank 53 of interlayer sleeve 534, to be carried out to gas
Dust removal by filtration taste removal, lower filled layer 537 is arranged between the side wall and the side wall of dedusting taste removal tank 53 of interlayer sleeve 534, with right
Liquid is filtered absorption impurity, and centralized collection processing is discharged by discharge outlet 532 in the liquid filtered by lower filled layer 537.
Further, upper filled layer 536 is activated carbon filled layer or molecular sieve filled layer, and lower filled layer 537 is filter pulp.
Further, also in the inside of the side wall of interlayer sleeve 534 setting water-cooling jacket layer 538, water-cooling jacket layer 538 surrounds
Interlayer sleeve 534 is arranged, the cavity that the 538 inside setting of water-cooling jacket layer is circulated for recirculated cooling water, in water-cooling jacket layer 538
Circulating water outlet is arranged at the top of water-cooling jacket layer 538 in setting cycle water inlet in bottom.Accelerated to mixed by recirculated cooling water
The cooling for closing gas, particularly speeds up the cooling to vapor so that the gas adherency of more penetrating odors is dissolved in cooling
In water, to be adhered on the inner wall of interlayer sleeve 534, or filtered by lower filled layer 537 together with water after cooling
Or it is collected.
Further, interlayer sleeve 534 is the conical hollow cylinder of upper and lower opening, and the upper opening of interlayer sleeve 534 is less than
Lower openings, so that the side wall of interlayer sleeve 534 is sloped sidewall.The setting of sloped sidewall, not only forms conducive to mixed gas
Vortex ring, and when the cooled powder bed formed is fallen downwards under the condition of self-weight, deposit adhesion is easy in interlayer sleeve
On 534 tilt internal wall, formation can be scraped or collected after prolonged use in a manner of usually dismantling interlayer sleeve 534
Powder bed has not only been accomplished to be separated by solid-liquid separation recycling, but also has avoided the problem of lower filled layer 537 is blocked.
Referring to Fig. 3, Fig. 4, further, the dedusting deodorizing device further includes pretreatment tank 54, heating long tube 55, pretreatment
Tank 54 is hollow tank body, pre-processes and opens up air inlet 541 on the side wall of tank 54, bottom opens up leakage fluid dram 542, and top opens up outlet
The air inlet 541 of mouth 543, pretreatment tank 54 is connect with the gas outlet 543 of air pump, so that mixed gas is first pumped into pre- by air pump
In process tank 54, the gas outlet 543 at 54 top of pretreatment tank is entered by heating long tube 55 and the mixed gas of dedusting taste removal tank 53
Mixing liquid is discharged for mouth connection, leakage fluid dram 542, pretreatment 54 inner upper of tank setting coil pipe 544, on the side wall of coil pipe 544
Gather gas outlet 543 or water outlet, and to form water mist atmosphere or cascade in pretreatment tank 54, coil pipe 544 is concentric circles coil pipe
544, the both ends leakage of coil pipe 544 is described to add so that vapor or water mist or water flow in and out in the outside of pretreatment tank 54
Hot long tube 55 is hollow elongated tube, also wraps up heating layer on the outer wall of heating long tube 55, for by mixed in heating long tube 55
It closes gas to be heated, to improve its temperature.
The principle that the program is captured using physical dissolution or mechanical adhesion, by the gas molecule or flue dust in mixed gas
The water that molecule or other particulate matters are passed through the vapor of coil pipe 544 or water mist or water are flowed out along gas outlet 543 or water outlet
Steam or water mist or water are soluble in water after capturing, and centralized collection processing then is discharged from leakage fluid dram 542；
The setting of heating long tube 55 and its heating layer can improve the temperature of mixed gas, enter dedusting in mixed gas and remove
Increase the temperature spread of mixed gas and interlayer sleeve after taste tank 53, and then improves vapor or other gases in mixed gas
Condensation is adhered to the probability of interlayer sleeve so that and more gases are dissolved with moisture adherency, and then are filtered and adsorbed by lower filled layer,
In this way, upper filled layer is filtered absorption to residual gas, lower filled layer passes through the water after cooling dissolved with gas together
Lower filled layer is filtered or is collected.
In this way, by two-step method and binary partition method, the isolation of purified processing of gas and liquid is realized.
Further, the dedusting deodorizing device further includes isolation outer cover 56, the first outer tube 57, the second outer tube 58, and isolation is outer
The arrival end entered for plastic tube with cooling device for the other end of plastic tube after molding output in molding die is arranged in cover 56
Between, moulding plastics pipe is wrapped up and is isolated, is isolated between the outer wall of outer cover 56 and molding die, the outer wall of cooling device and seals
Connection, one end of the first outer tube 57 pass through isolation outer cover 56, with 56 inside connection of outer cover, the other end of the first outer tube 57 be isolated
It being connect with the arrival end of air pump, one end of the second outer tube 58 passes through the side wall of cooling device, to be connected to cooling device inside, the
The other end of two outer tubes 58 and the arrival end of air pump connect.
The setting of tracheae realizes and handles the mixed gas suction of interior mould inside, and after forming plastic pipe, plastic tube
From molding die to when transition, molding die supplies the other end and cooling device of plastic tube after molding output between cooling device
Plastic tube between the arrival end entered for plastic tube is leakage, and there is also irritative gas to ask from what plastic tube outer wall discharged
Topic, equally after entering in cooler bin, not cooled tube wall still can discharge irritative gas, the said program by these
Problem solves together.Outer cover 56, the first outer tube 57, the second outer tube 58, tracheae, and pretreatment tank 54, dedusting taste removal tank is isolated
53 are used cooperatively so that the mixing irritative gas discharged from plastic pipe inner wall, outer wall is all handled by absorption without dead angle, is done
It has arrived environment friendly and pollution-free.
Further, the production system further includes thickness monitoring module, and thickness monitoring module includes being arranged in feeding device
Thickness detection apparatus 63 in the molding die other end, flow control dress is arranged in volume control device at 10 material outlet
It sets including sequentially connected controller, servo motor 61, blanking Starlike valve 62, output end and the blanking Starlike valve of servo motor 61
62 axis connections realize blanking to drive blanking Starlike valve 62 to rotate by servo motor 61, controller also with thickness detection apparatus
63 connections, thickness detection apparatus 63 are used to detect the practical wall thickness of the plastic tube exported from molding die, and practical wall thickness is carried
It is supplied to controller, rotating speed of the controller according to practical wall thickness control servomotor 61, to realize the adjustment to blanking velocity.
For example, when the practical wall thickness detected is more than preset standard thickness in controller, then controller control servo is electric
The velocity of rotation of machine 61 is slack-off, reduces blanking velocity；Conversely, increasing blanking velocity.Thickness detection apparatus 63 may be used existing
Thickness detecting sensor in technology.
Module or unit in the utility model embodiment device can be merged, divide and be deleted according to actual needs
Subtract.
Above disclosures are merely preferred embodiments of the utility model, with this utility model cannot be limited certainly
Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality
The equivalent variations made by novel claim, still fall within the scope of the utility model.
Claims (7)
1. a kind of environment friendly and pollution-free plastic tube production system, it is characterised in that：Including feeding device, extrusion device, molding die,
Cooling device, the mixture for being used to form plastic tube is held inside feeding device, and material outlet, institute is arranged in the bottom of feeding device
The entrance for stating material outlet and extrusion device connects, and the outlet of extrusion device is connect with the feeding mouth of molding die one end, with logical
It crosses extrusion device and the mixture of molten state is squeezed into molding die, the runner for forming plastic tube is set inside molding die, so that
The mixture of molten state forms plastic tube along runner, and the plastic tube outlet of the molding die other end is defeated for plastic tube after molding
Go out, one end of cooling device opens up the entrance entered for plastic tube, and the other end of cooling device is for exporting plastic tube, in cooling
Circulated sprinkling water pipe of the setting for cooling plastic pipe inside device, molding die include outer mold, interior mold, and outer mold is sky
Heart die sleeve, the portion of runner that the setting of outer mold inside is flowed for the mixture of molten state, interior mold are embedded in the inside of outer mold,
Gap is set between interior mold outer surface and outer mold inner surface, to form the portion of runner of plastic tube, interior mold is also hollow
Die sleeve, the inside of the inner surface of interior mold form the cavity to radiate for plastic tube, and the left end of cavity blocks, the right side of cavity
End does not block, so that the inside of plastic tube after molding is connected to cavity inside, the environment friendly and pollution-free plastic tube production system
System further includes dedusting deodorizing device, and dedusting deodorizing device includes tracheae, air pump, dedusting taste removal tank, one end of tracheae and interior mold
Internal cavity connection, the other end of tracheae are connect with air pump, with by air pump by interior mold cavity inside and inside of plastic tubes
Gas extraction, and be sent into dedusting taste removal tank, dedusting taste removal tank is the closed tank of hollow cylinder, on the top of dedusting taste removal tank
Portion opens up exhaust outlet, and discharge outlet is arranged in bottom, mixed gas entrance is arranged on the side wall of dedusting taste removal tank, the tracheae
End is connected to along the tangential direction of tank wall with mixed gas entrance, in the inside sandwich establishment sleeve of dedusting taste removal tank,
Interlayer sleeve is the hollow cylinder of upper and lower opening, and interlayer sleeve is arranged concentrically in the inside of dedusting taste removal tank, the top of interlayer sleeve
It is not connected to at the top of dedusting taste removal tank, to form air ventilation passage, the bottom of the bottom and dedusting taste removal tank of interlayer sleeve
It is not connected to, to form fluid flow paths, toroidal cavity is spaced between the side wall and the side wall of dedusting taste removal tank of interlayer sleeve, mix
Gas access is closed to be connected to the toroidal cavity, so that mixed gas enters toroidal cavity along the circumferential direction of interlayer sleeve,
The upper filled layer of setting at the top of toroidal cavity, the filled layer under the setting of the bottom of toroidal cavity, upper filled layer are arranged in interlayer
Between the side wall and the side wall of dedusting taste removal tank of sleeve, to be filtered dedusting taste removal to gas, lower filled layer is arranged in interlayer
Between the side wall and the side wall of dedusting taste removal tank of sleeve, to be filtered absorption impurity to liquid, by the filtering of lower filled layer
Liquid is by discharge outlet discharge centralized collection processing.
2. environment friendly and pollution-free plastic tube production system as described in claim 1, it is characterised in that：Upper filled layer is filled out for activated carbon
Layer or molecular sieve filled layer are filled, lower filled layer is filter pulp.
3. environment friendly and pollution-free plastic tube production system as described in claim 1, it is characterised in that：Also in the side wall of interlayer sleeve
Inside water-cooling jacket layer is set, water-cooling jacket layer surrounds the setting of interlayer sleeve, is arranged for circulating cooling inside water-cooling jacket layer
The logical cavity of flow, in the bottom of water-cooling jacket layer setting cycle water inlet, at the top of water-cooling jacket layer, setting recirculated water goes out
Mouthful.
4. environment friendly and pollution-free plastic tube production system as claimed in claim 3, it is characterised in that：Interlayer sleeve is upper and lower opening
Conical hollow cylinder, the upper opening of interlayer sleeve is less than lower openings, so that the side wall of interlayer sleeve is sloped sidewall.
5. environment friendly and pollution-free plastic tube production system as claimed in claim 3, it is characterised in that：The dedusting deodorizing device is also
Including pretreatment tank, heating long tube, pretreatment tank is hollow tank body, pre-processes and opens up air inlet on the side wall of tank, bottom opens up
Leakage fluid dram, top open up gas outlet, and the gas outlet of the air inlet and air pump that pre-process tank connects, so that air pump is first by mixed gas
It is pumped into pretreatment tank, the gas outlet for pre-processing tank top is connected by heating the mixed gas entrance of long tube and dedusting taste removal tank
It connects, mixing liquid is discharged leakage fluid dram, and coil pipe is arranged in pretreatment tank inner upper, gather on the side wall of coil pipe gas outlet or water outlet
Mouthful, to form water mist atmosphere or cascade in pretreatment tank, coil pipe is concentric circles coil pipe, and the both ends leakage of coil pipe is in pretreatment tank
Outside, so that vapor or water mist or water flow in and out, the heating long tube is hollow elongated tube, also in the outer of heating long tube
Heating layer is wrapped up on wall, for being heated by the mixed gas in heating long tube, to improve its temperature.
6. environment friendly and pollution-free plastic tube production system as claimed in claim 5, it is characterised in that：The dedusting deodorizing device is also
Including isolation outer cover, the first outer tube, the second outer tube, isolation outer cover is arranged in molding die for the another of plastic tube after molding output
Between the arrival end that one end and cooling device enter for plastic tube, moulding plastics pipe is wrapped up and is isolated, isolation outer cover and molding
Be tightly connected between the outer wall of die head, the outer wall of cooling device, one end of the first outer tube passes through isolation outer cover, with outer cover is isolated
Inside connection, the other end of the first outer tube and the arrival end of air pump connect, and one end of the second outer tube passes through the side wall of cooling device,
To be connected to cooling device inside, the other end of the second outer tube and the arrival end of air pump connect.
7. environment friendly and pollution-free plastic tube production system as claimed in claim 3, it is characterised in that：The production system further includes
Thickness monitoring module, thickness monitoring module include the volume control device being arranged at the material outlet of feeding device, setting exist
The thickness detection apparatus of the molding die other end, volume control device include sequentially connected controller, servo motor, blanking star
Type valve, output end and the blanking Starlike valve axis connection of servo motor are realized with driving the rotation of blanking Starlike valve by servo motor
Blanking, controller are also connect with thickness detection apparatus, and thickness detection apparatus is for detecting the plastic tube exported from molding die
Practical wall thickness, and practical wall thickness is provided to controller, rotating speed of the controller according to practical wall thickness control servomotor, to realize
Adjustment to blanking velocity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820310123.9U CN207983937U (en) | 2018-03-06 | 2018-03-06 | Environment friendly and pollution-free plastic tube production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820310123.9U CN207983937U (en) | 2018-03-06 | 2018-03-06 | Environment friendly and pollution-free plastic tube production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189361A (en) * | 2018-03-06 | 2018-06-22 | 石嘴山市塑料厂 | Environment friendly and pollution-free plastic tube production system |
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2018
- 2018-03-06 CN CN201820310123.9U patent/CN207983937U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189361A (en) * | 2018-03-06 | 2018-06-22 | 石嘴山市塑料厂 | Environment friendly and pollution-free plastic tube production system |
| CN108189361B (en) * | 2018-03-06 | 2024-03-26 | 石嘴山市塑料厂 | Environment-friendly pollution-free plastic pipe production system |
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