CN114618387B - Plastic modification device and method - Google Patents
Plastic modification device and method Download PDFInfo
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- CN114618387B CN114618387B CN202111553855.3A CN202111553855A CN114618387B CN 114618387 B CN114618387 B CN 114618387B CN 202111553855 A CN202111553855 A CN 202111553855A CN 114618387 B CN114618387 B CN 114618387B
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- 239000004033 plastic Substances 0.000 title claims abstract description 165
- 229920003023 plastic Polymers 0.000 title claims abstract description 165
- 238000012986 modification Methods 0.000 title claims abstract description 21
- 230000004048 modification Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 161
- 238000001514 detection method Methods 0.000 claims abstract description 59
- 239000003607 modifier Substances 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000012549 training Methods 0.000 claims description 17
- 230000005294 ferromagnetic effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 230000005291 magnetic effect Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002715 modification method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00054—Controlling or regulating the heat exchange system
- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00168—Controlling or regulating processes controlling the viscosity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a plastic modification device and a method, wherein the plastic modification device comprises a stirring device, the stirring device comprises a stirring cavity and a stirring shaft which is rotatably arranged in the stirring cavity, a viscosity detection device is arranged on the stirring shaft, a temperature detection device is arranged in the stirring cavity, and the viscosity detection device can detect the viscosity of the molten plastic in the stirring cavity when the stirring shaft is used for stirring; the stirring device comprises a stirring shaft, a viscosity detection device and a plastic modification device, wherein the stirring shaft is arranged in the stirring cavity, the viscosity detection device is arranged in the stirring cavity, the stirring shaft is connected with the viscosity detection device, the viscosity of the molten plastic in the stirring cavity reaches a preset value, the control device controls the stirring shaft and the viscosity detection device to stop working, the plastic modification device is used for processing the plastic according to the method, the viscosity value of the molten plastic in the stirring cavity can be detected through the viscosity detection device, the current mixing effect of the plastic and a modifier in the stirring cavity can be judged according to the viscosity value of the plastic in the stirring cavity, and the purposes of scientific monitoring and data monitoring are achieved.
Description
Technical Field
The invention relates to the technical field of plastic manufacturing, in particular to a plastic modification device and a method.
Background
The modified plastic is a plastic product which is processed and modified by methods such as filling, blending, reinforcing and the like on the basis of general plastic, and the flame retardance, strength, impact resistance, toughness and other properties are improved. When the modified plastic is prepared, the plastic raw material is heated to be in a molten state, then the modifier is added into the plastic in the molten state, the mixture is mixed and stirred to form a mixture, and finally the mixture is extruded, shaped and cooled.
The performance of modified plastics has a great relationship with whether a modifier and plastics are uniformly mixed or not, most of the existing plastic modification devices adopt a method that a heating device is used for heating and melting the plastics, and the melted plastics and the modifier are stirred so as to fully fuse the plastics, but in the existing manufacturing process, the plastics cannot be fully melted when the plastics are heated to be in a molten state, so that after the molten plastics and the modifier are mixed and stirred, partial plastic particles exist in the mixture, and the performance of the modified plastics is adversely affected; in order to solve the problems that the fluidity of plastic in a molten state is poor, and a modifier cannot be fully and uniformly mixed with the plastic in the molten state, which can cause adverse effects on the performance of the modified plastic, the Chinese patent application No. CN202011082902.6 discloses a modified plastic preparation process.
However, although the mixing efficiency can be improved when the modified plastic is prepared by using the method, whether the plastic and the modifier are uniformly mixed can only be judged by depending on the mixing time or experience, the mixing effect of the plastic and the modifier cannot be intuitively understood, and scientific monitoring cannot be carried out.
Disclosure of Invention
In view of the above problems, the present application provides a plastic modification apparatus and method to solve the technical problems in the background art.
The invention provides a plastic modification device which comprises a stirring device, wherein the stirring device comprises a stirring cavity and a stirring shaft which is rotatably arranged in the stirring cavity, a viscosity detection device is arranged on the stirring shaft, a temperature detection device is arranged in the stirring cavity, and the viscosity detection device can detect the viscosity of molten plastic in the stirring cavity at present when the stirring shaft is used for stirring; the stirring device is characterized by further comprising a control device, and when the viscosity of the molten plastic in the stirring cavity reaches a preset value, the control device controls the stirring shaft and the viscosity detection device to stop working.
Further, viscosity detection device establishes including the cover establish on the (mixing) shaft and with (mixing) shaft normal running fit's sleeve, setting are in at least one choked flow spare on the sleeve and be used for detecting the rotational speed detection device of sleeve rotational speed, the sleeve is provided with ferromagnetic spare, be provided with on the (mixing) shaft with ferromagnetic spare magnetism inhales the complex electro-magnet, rotational speed detection device with the electro-magnet all with controlling means connects.
Further, the sleeve is provided with two and all is located the stirring intracavity, two the sleeve set up in the both ends position of (mixing) shaft, the choked flow piece is including establishing two separately on the sleeve and perpendicular to two first choked flow poles of (mixing) shaft and connect two the second choked flow pole of first choked flow pole.
Further, the rotation speed detection device comprises a base and a pressing plate, the base and the pressing plate are arranged around the stirring shaft, the pressing plate is arranged between the base and one of the sleeves, one surface, facing the pressing plate, of one of the sleeves is provided with a protruding portion in sliding fit with the pressing plate, a plurality of piezoelectric sheets are arranged between the base and the pressing plate, and the piezoelectric sheets are arranged around the stirring shaft at intervals.
Furthermore, a plurality of guide holes are formed in the base around the stirring shaft at even intervals, the piezoelectric sheets are arranged at the bottoms of the guide holes in a plurality of modes, guide columns are arranged in the guide holes in a guiding mode, pressure springs are arranged between the guide columns and the piezoelectric sheets, and the end portions of the guide columns can abut against the pressing plate.
Further, the invention also provides a plastic modification method, which comprises the following steps:
heating, melting and stirring the plastic and the modifier by the plastic modifying device, detecting the current viscosity value of the molten plastic in the stirring cavity by the viscosity detecting device, and transmitting the viscosity value to the control device;
the control device determines the mixing effect of the molten plastic and the modifier in the current stirring cavity according to the current temperature in the stirring cavity and a preset viscosity value model;
the viscosity value model is obtained by taking the viscosity values of the detection samples in different mixing states as training samples and taking the performance of the modified plastic finished products corresponding to the detection samples as training labels.
Further, the method further comprises: taking a proper amount of original plastic samples, cutting and crushing the original plastic samples, and equally dividing the crushed original plastic samples into a plurality of groups;
adding a modifier into a plurality of groups of plastic samples according to the ratio of plastics to the modifier to prepare a plurality of groups of training samples;
heating a plurality of groups of training samples to the same temperature and stirring, measuring the viscosity of the current sample after controlling the plurality of groups of training samples to be heated and stirred for different time, and then carrying out cooling and shaping treatment to obtain a plurality of groups of modified plastic samples;
and respectively detecting the performance of a plurality of groups of modified plastic samples.
Further, the properties of the modified plastic sample include any one or more of flame retardancy, strength, impact resistance, density, abrasion resistance and insulation.
Further, the ferromagnetic part is a ferrous material.
Further, the method further comprises: and establishing a database according to the measured properties of the multiple groups of modified plastic samples to obtain a viscosity value model, and uploading the database to the control device.
The invention provides a plastic modification device and a method, wherein the plastic modification device is used for processing modified plastics, a stirring unit is driven by a stirring shaft to stir so that molten plastics and a modifier are fully fused, a viscosity detection device is arranged on the stirring shaft, so that the viscosity of the plastics in a stirring cavity can be detected in real time in the stirring process of the stirring shaft and transmitted to a control device, the control device comprises a storage unit, and the storage unit is used for storing a viscosity value model (the obtaining of the viscosity value model is described in detail below), and the viscosity value of the molten plastics required by the modified plastics with the best performance can be obtained at the current heating temperature according to the viscosity value model, so that the stirring and mixing operation can be stopped when the viscosity of the molten plastics in the stirring cavity reaches the viscosity value, the mixing effect of the plastics and the modifier in the current stirring cavity can be judged according to the viscosity value of the plastics in the monitoring stirring cavity, and the purposes of scientific monitoring and data monitoring can be achieved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a stirring device in a plastic modification device provided by the present invention.
FIG. 2 isbase:Sub>A schematic cross-sectional view of the position A-A in the plastic modification apparatus provided by the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of a rotation speed detection device in a plastic modification device provided by the invention.
Fig. 4 is a schematic structural diagram of an embodiment of a base in a plastic modification apparatus provided in the present invention.
FIG. 5 is a schematic flow chart of a plastic modification method provided by the present invention.
Fig. 6 is a schematic flow chart of another embodiment of a plastic modification method provided by the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The invention provides a plastic modification device, and referring to fig. 1-4, as a specific implementation manner, the device comprises a stirring device 1, wherein the stirring device 1 comprises a stirring cavity 10 and a stirring shaft 11 rotatably arranged in the stirring cavity 10, a viscosity detection device 2 is arranged on the stirring shaft 11, the stirring cavity 10 is provided with a temperature detection device, and the viscosity detection device 2 can detect the viscosity of the molten plastic in the stirring cavity 10 when the stirring shaft 11 is stirring; the stirring device further comprises a control device 3, and when the viscosity of the molten plastic in the stirring cavity 10 reaches a preset value, the control device 3 controls the stirring shaft 11 and the viscosity detection device 2 to stop working.
Specifically, referring to fig. 1, which is a schematic structural diagram of a stirring apparatus, the stirring apparatus 1 includes a stirring chamber 10, a feeding port 101 and a discharging port 102 are disposed on the stirring chamber 10, the feeding port 101 is used for feeding materials, the discharging port is used for discharging plastic in a molten state in which mixing and stirring are uniform, a stirring shaft 11 is vertically disposed in the stirring chamber 10, the stirring shaft 11 is driven by a driving motor 110, a stirring unit (not shown) is disposed on the stirring shaft 11, the stirring unit is driven by the stirring shaft to stir so that the molten plastic and a modifier are fully fused, a viscosity detection device 2 is disposed on the stirring shaft 11, so that real-time detection can be performed on the plastic in the stirring chamber during stirring by the stirring shaft, and the plastic can be transmitted to a control device, the control device 3 includes a storage unit for storing a viscosity value model (the acquisition of the viscosity value model is described in detail below), the viscosity value of the molten plastic required by the modified plastic with the best performance can be acquired according to the viscosity value model, so that when the molten plastic in the stirring chamber reaches the viscosity value, the viscosity value and the viscosity of the modified plastic can be determined according to the viscosity value, the best monitoring of the stirring chamber can be scientifically monitored, and the heating temperature of the stirring chamber, and the heating device can also be scientifically monitored.
Further, referring to fig. 1 and 2, as a specific embodiment, the viscosity value detection apparatus 2 has a specific structure that: viscosity detection device 2 establishes including the cover (mixing) shaft 11 on and with (mixing) shaft 11 normal running fit's sleeve 21, setting are in at least one choker piece 22 on the sleeve 21 and be used for detecting the rotational speed detection device 25 of sleeve 21 rotational speed, sleeve 21 is provided with ferromagnetic piece 23, be provided with on the (mixing) shaft 11 with ferromagnetic piece 23 magnetism is inhaled complex electro-magnet 24, rotational speed detection device 25 with electro-magnet 24 all with controlling means 3 connects.
Specifically, as an implementation manner, the sleeve 21 may be made of a ferromagnetic material, the sleeve 21 is sleeved on the stirring shaft 11 and can rotate around the stirring shaft, the electromagnet 24 can provide magnetic force to adsorb the sleeve, so as to provide driving force for the sleeve 21, and the driving sleeve 21 can rotate together with the stirring shaft; during operation, according to the type of the current modified plastic, the optimal viscosity value eta is obtained according to the viscosity value model stored in the control device Optimization of The choke piece 22 is located the plastics under the molten condition, the (mixing) shaft 11 rotates and stirs the mixture to plastics, and drive sleeve 21 and overcome the resistance that choke piece 22 received and rotate, thereby can acquire the viscosity value of molten state plastics in the current stirring intracavity according to the slew velocity of current sleeve 21, along with the going on of stirring, the viscosity of the plastics in the stirring intracavity changes, the resistance that choke piece 22 received also changes, when current viscosity value reaches the best viscosity value, current plastics have mixed evenly promptly, can obtain the modified plastics of best performance, then controlling means 3 control (mixing) shaft 11, electro-magnet 24 stop work, the control is opened discharge gate 102 and is cooled off the nature can with the plastics derivation in the stirring intracavity.
Referring to fig. 2, as another practical implementation, the sleeve may be made of non-magnetic adsorption material, a plurality of mounting grooves are arranged on the side wall of the sleeve around the stirring shaft 11, the ferromagnetic member 23 may be a magnet arranged in the mounting grooves, as a preferred implementation, a plurality of electromagnets 24 are arranged on each sleeve, the electromagnets are located within the range surrounded by the sleeve 21, and the plurality of electromagnets 24 are arranged at regular intervals around the stirring shaft 11.
Further, as a preferred embodiment, the electromagnet 24 is preferably a variable electromagnet, the optimal viscosity value of the plastic material after mixing is different due to different plastic materials and different modifiers are added, the electromagnet 24 is set to be a variable electromagnet, the magnetic force of the electromagnet 24 can be adjusted according to different modified plastics to be processed, so that the driving force of the sleeve 21 is adjusted, the driving force of the sleeve 21 is equal to the resistance of the flow resisting piece 22 when the plastic material is at the optimal viscosity value, and the difference between the rotating speed of the stirring shaft 11 and the rotating speed of the sleeve 21 is zero when the plastic in the stirring cavity reaches the optimal viscosity value, so that the control device only needs to detect the rotating speed difference between the stirring shaft 11 and the sleeve 21, the monitoring process of viscosity is simplified, and the monitoring accuracy is improved.
Further, referring to fig. 1, two sleeves 21 are disposed in the stirring chamber 10, two sleeves are disposed at two ends of the stirring shaft 11, and the flow blocking element 22 includes two first flow blocking rods 220 disposed on the two sleeves 21 and perpendicular to the stirring shaft 11, and a second flow blocking rod 221 connecting the two first flow blocking rods 220.
Specifically, in order to ensure the accuracy of viscosity detection, referring to fig. 1, as a preferred embodiment, two sleeves 21 are provided, wherein an electromagnet 24 is provided on the stirring shaft 11 corresponding to each sleeve 21, the sleeves are respectively provided at two ends of the stirring shaft 11, and first choke rods 220 are provided on the two sleeves 21, so that the viscosity value of the plastic can be detected from different positions, and the viscosity value of the plastic can be detected at different depths by providing the choke rods, so that the viscosity value of the plastic in the stirring cavity in the current state can be optimally detected, the detection error is reduced, and the detection accuracy is improved; and the stirring unit can be arranged between the first flow blocking rod and the second flow blocking rod through the arrangement mode, so that the normal operation of the stirring device is not influenced.
Further, still including set up in the third detection device 26 of stirring chamber 10, detection device includes along the sound wave detecting element that the axial direction interval of (mixing) shaft 11 set up, through sound wave detecting element can detect the plastics under the inside molten state of stirring chamber 10The liquid level, which is to say, whether the second flow-blocking rods 221 of the two first flow-blocking rods 220 are located inside the molten plastic and in the volume inside the molten plastic is judged, so that the viscosity value of the molten plastic in the current state can be detected more accurately, and the layered detection can be performed through a plurality of acoustic wave detection units, so that whether the mixing uniformity of each layer of the molten plastic is consistent or not can be judged; specifically, the working principle is as follows: when plastics are stirred, the plurality of sound wave detection units work, sound waves emitted by the sound wave detection units are reflected when encountering the plastics in the stirring cavity, the sound wave detection units recover the reflected sound waves, whether the plastics exist at the positions where the sound wave detection units are located is obtained according to the reflection time, the liquid level height of the plastics can be determined, the volume of the second choke rod 221 of the first choke rod 220 in the liquid level is further determined, the surface area S of the incident flow surface when the water stirring shaft of the second choke rod 221 of the first choke rod 220 rotates is determined, and the plastic can be stirred according to F1= eta Optimization of *S*V*L*&Determining the resistance of the flow resisting element 22 when the viscosity value of the plastic reaches the optimal viscosity value, wherein V is the rotation speed of the stirring shaft 11 during stirring in seconds/rotation, L is the length of the first flow resisting rod in meters,&for adjusting the coefficient, the value range is as follows: 0.23-10.78, so that the magnetic force of the electromagnet 24 can be adjusted according to the F1.
Further, referring to fig. 3 and 4, as a specific embodiment, the rotation speed detecting device 25 includes a base 251 and a pressing plate 252 disposed around the stirring shaft 11, the pressing plate 252 is disposed between the base 251 and one of the sleeves 21, a protruding portion 210 slidably fitted with the pressing plate 252 is disposed on a surface of one of the sleeves 21 facing the pressing plate 252, a plurality of piezoelectric sheets 253 are disposed between the base 251 and the pressing plate, and the plurality of piezoelectric sheets 253 are disposed at intervals around the stirring shaft 11.
Further, referring to fig. 4, a plurality of guide holes 2510 are uniformly arranged on the base 251 around the stirring shaft 11 at intervals, the piezoelectric sheets 253 are respectively arranged at the bottoms of the guide holes 2510, guide posts 254 are arranged in the guide holes in a guiding manner, compression springs 255 are arranged between the guide posts 254 and the piezoelectric sheets 253 and between the guide posts 254 and the piezoelectric sheets 253, and the end portions of the guide posts 254 can abut against the pressing plate 252.
Specifically, referring to fig. 3, as an implementation manner, the base 251 is fixedly disposed on an inner sidewall of the stirring chamber 10, and the pressing plate 252 is connected to the base through an elastic sleeve 256, wherein the elastic sleeve 256 may be made of a high temperature resistant rubber material; when the stirring shaft rotates, the sleeve 21 rotates together, the protrusion 210 can repeatedly push the extrusion plate 252 to resist the elastic movement of the elastic sleeve 256 and the pressure spring 255, so that part of the pressure spring can extrude the piezoelectric sheet 253, the position extruded by the protrusion 210 changes along with the rotation of the sleeve, and the position of the extrusion plate which is not overstocked with the protrusion bounces again, so that the piezoelectric sheet can be repeatedly extruded to generate current, the rotation speed of the sleeve 21 can be determined according to the magnitude of the current generated by the piezoelectric sheet, and an electric energy recovery device can be connected with the piezoelectric sheet, so that the electric energy generated by the piezoelectric sheet can be recovered.
Specifically, the piezoelectric patches can be made of piezoelectric crystals, so that the piezoelectric patches can be repeatedly pressed through a pressure spring when the guide post slides in the guide hole, so that the piezoelectric patches can convert mechanical energy into electric energy, the piezoelectric patches are connected with a rectification circuit, the electric energy generated by the piezoelectric patches can be rectified through the rectification circuit, the piezoelectric patches further comprise a current detection device, the current detection device is used for detecting the size of current, the current detection device is connected with the control device 3, the electric energy generated by the piezoelectric patches can also be supplied with power for the electromagnet 24 after rectification, and therefore the electric energy can be saved.
As another practical implementation manner, the base may be further disposed on the stirring shaft 11, and may rotate synchronously with the stirring shaft 11 when the stirring shaft 11 rotates, where the rotation speed obtained according to the magnitude of the current generated by the piezoelectric plate is a rotation speed difference between the sleeve 21 and the base, that is, a difference between the actual rotation speed of the sleeve 21 and the rotation speed of the stirring shaft, and when the current generated by the piezoelectric plate is zero, the current rotation speed of the sleeve is equal to the rotation speed of the stirring shaft 11.
Further, in order to ensure that the rotation speed detection device 25 can accurately detect the rotation speed, the number of the compressed springs is N; of compression springsK = (M is M) when the elastic coefficient is K, the length of the compression spring is L1, the mass of the pressing plate is M in kilograms, the height of the projection 210 is H in meters 1/2 * alpha)/(H/L1), wherein alpha is the accommodate coefficient, and the value range is 0.25-0.83, sets up the pressure spring through this kind of limited mode to can guarantee that the bulge can be fast with pressing the quick jack-up in the place that the pressing plate does not have with the bulge contact when the relative pressing plate rotates, guarantee the accuracy of detection.
Example two
Further, the present invention also provides a plastic modification method, referring to fig. 5, the method comprising:
s1, heating, melting and stirring plastics and a modifier through the plastic modification device provided in the first embodiment, detecting the viscosity value of the molten plastics in the stirring cavity 10 through the viscosity detection device 2, and transmitting the viscosity value to the control device 3; therefore, the viscosity value of the molten plastic in the current stirring cavity can be detected through the viscosity detection device.
The control device 3 determines the mixing effect of the molten plastic and the modifier in the current stirring cavity 10 according to the temperature in the current stirring cavity and a preset viscosity value model;
specifically, the method for obtaining the viscosity model comprises the following steps: the viscosity value model of the viscosity detection device 2 is obtained by training a modified plastic finished product performance corresponding to a detection sample as a training label according to the viscosity values of the detection sample at different melting temperatures.
Further, referring to fig. 5, the method further includes: taking a proper amount of original plastic samples, cutting and crushing the original plastic samples, and equally dividing the crushed original plastic samples into a plurality of groups; the original plastic sample is the plastic without the modifier, S101, the sample is taken and the plastic is crushed by a crusher, so that the subsequent melting is facilitated, and the original plastic sample is divided into a plurality of groups according to the weight after crushing.
S102, adding a modifier into a plurality of groups of plastic samples according to the proportion of plastics to the modifier, and preparing into a plurality of groups of training samples; specifically, "adding a modifier into a plurality of groups of plastic samples according to the ratio of the plastic to the modifier" means adding the modifier according to the ratio of the modifier to the plastic, wherein the ratio of the modifier to the plastic is the ratio commonly used in the prior art.
S103, heating a plurality of groups of training samples to the same temperature and stirring, measuring the viscosity of the current sample after controlling the plurality of groups of training samples to be heated and stirred for different time, and then carrying out cooling and shaping treatment to obtain a plurality of groups of modified plastic samples; specifically, the grouped plastic samples are all heated, the heating temperature is ensured to be the same, after the heating and stirring time T of the first group of samples is controlled, the samples are subjected to viscosity measurement and then are subjected to cooling qualitative processing, the heating and stirring time of the second group of samples is T + C, wherein C is an arbitrary constant, namely the time of heating and stirring intervals between two adjacent groups of samples, then the second group of samples are subjected to cooling setting after the viscosity measurement, the samples are sequentially processed, and the viscosity value of each group is recorded;
it should be noted that, in step S101, multiple units of original plastic samples may be taken, each unit of original plastic samples is divided into multiple groups after being crushed, and then each unit of original plastic samples is sequentially subjected to the processing of steps S102 and S103, and the heating temperature of each unit is controlled to be different when step S103 is performed.
And S104, respectively detecting the performances of a plurality of groups of modified plastic samples.
Further, the method further comprises: and establishing a database according to the measured properties of the multiple groups of modified plastic samples and the viscosity values of the corresponding plastic samples to obtain a viscosity value model, and uploading the viscosity value model to the control device 3.
Specifically, each set of the plurality of units is subjected to a performance test, the performance of the modified plastic sample comprises any one or more of flame retardancy, strength, impact resistance, density, wear resistance and insulation, the performance of the modified plastic sample can be tested according to the actual purpose of the modified plastic, for example, the purpose of improving flame retardancy,the flame retardance of the modified plastic sample can be detected, and the strength, the density and other properties can be detected at the same time, so that the modified plastic sample with the optimal performance in each unit group is determined, the heating temperature and the viscosity value during cooling and shaping corresponding to the modified plastic sample with the optimal performance are obtained, and the viscosity value is the optimal viscosity value eta Optimization of The method is used for training the modified plastics with different requirements in sequence to obtain the data of the optimal viscosity value and the corresponding heating temperature, and the data is stored in the control device 3 to obtain the viscosity value model.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (4)
1. The plastic modification device comprises a stirring device (1), and is characterized in that the stirring device (1) comprises a stirring cavity
(10) And a stirring shaft (11) rotatably arranged in the stirring cavity (10), wherein the stirring shaft (11) is provided with viscosity
The stirring chamber (10) is provided with a temperature detection device, and the viscosity detection device (2) can be arranged at the place
Detecting the viscosity of the molten plastic in the stirring cavity (10) when the stirring shaft (11) is stirring; also comprises a control device
(3) When the viscosity of the molten plastic in the stirring cavity (10) reaches a preset value, the control device (3) controls the stirring cavity to stir
The mixing shaft (11) and the viscosity detection device (2) stop working;
the viscosity detection device (2) comprises a sleeve (21) which is sleeved on the stirring shaft (11) and is in running fit with the stirring shaft (11), at least one flow resisting piece (22) arranged on the sleeve (21) and a rotating speed detection device (25) for detecting the rotating speed of the sleeve (21); the sleeve (21) is provided with a ferromagnetic part (23), the stirring shaft (11) is provided with an electromagnet (24) which is in magnetic attraction fit with the ferromagnetic part (23), and the rotating speed detection device (25) and the electromagnet (24) are both connected with the control device (3);
the rotating speed detection device (25) comprises a base (251) and a pressing plate (252), the base (251) and the pressing plate (252) are arranged around the stirring shaft (11), the pressing plate (252) is arranged between the base (251) and one of the sleeves (21), one surface, facing the pressing plate (252), of one of the sleeves (21) is provided with a protruding portion (210) in sliding fit with the pressing plate (252), a plurality of piezoelectric sheets (253) are arranged between the base (251) and the pressing plate, and the piezoelectric sheets (253) are arranged at intervals around the stirring shaft (11); the base (251) is provided with a plurality of guide holes (2510) at uniform intervals around the stirring shaft (11), the piezoelectric sheets (253) are respectively arranged at the bottoms of the guide holes (2510), guide columns (254) are arranged in the guide holes in a guiding mode, pressure springs (255) are arranged between the guide columns (254) and the piezoelectric sheets (253), and the end portions of the guide columns (254) can abut against the pressing plate (252).
2. A plastics modification apparatus according to claim 1, wherein the sleeve (21) is provided in two pieces and
are all positioned in the stirring cavity (10), two sleeves are arranged at the two ends of the stirring shaft (11), and the flow can be blocked
The element (22) comprises two first flow-resisting rods which are respectively arranged on the two sleeves (21) and are perpendicular to the stirring shaft (11)
(220) And a second choke lever (221) connecting the two first choke levers (220).
3. A method for modifying plastics, characterized in that it comprises the following steps:
heating and melting the plastic and the modifier with stirring by the plastic modification apparatus according to any one of claims 1 to 2, and passing the molten plastic and the modifier through the apparatus
The viscosity detection device (2) detects the viscosity value of the molten plastic in the stirring cavity (10) and transmits the viscosity value to the control device (3);
the control device (3) determines the current stirring cavity according to the temperature, the viscosity and a preset viscosity value model in the current stirring cavity
(10) The mixing effect of the internal molten plastic and the modifier;
wherein the viscosity value model is used as a training sample according to the viscosity values of the detection samples in different mixing states
And the performance of the modified plastic finished product corresponding to the test sample is obtained by training the training label.
4. A method of modifying plastics according to claim 3, further comprising the steps of:
s1, taking a proper amount of original plastic samples, cutting and crushing the original plastic samples, and equally dividing the crushed original plastic samples into a plurality of groups;
s2, adding a modifier into a plurality of groups of plastic samples according to the proportion of plastics to the modifier, and preparing into a plurality of groups of training samples;
s3, heating the plurality of groups of training samples to the same temperature and stirring, and controlling the plurality of groups of training samples not to be heated and stirred
Measuring the viscosity of the current sample after the same time, and then carrying out cooling and shaping treatment to obtain a plurality of groups of modified plastic samples;
and S4, respectively detecting the performance of a plurality of groups of modified plastic samples.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021108193854 | 2021-07-20 | ||
| CN202110819385.4A CN113368785A (en) | 2021-07-20 | 2021-07-20 | Plastic modification device and method |
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| CN114618387A CN114618387A (en) | 2022-06-14 |
| CN114618387B true CN114618387B (en) | 2023-03-10 |
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| CN202110819385.4A Withdrawn CN113368785A (en) | 2021-07-20 | 2021-07-20 | Plastic modification device and method |
| CN202111553855.3A Active CN114618387B (en) | 2021-07-20 | 2021-12-17 | Plastic modification device and method |
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| CN113368785A (en) * | 2021-07-20 | 2021-09-10 | 深圳市三工色彩科技有限公司 | Plastic modification device and method |
| CN114251946B (en) * | 2021-12-29 | 2023-03-10 | 徐州融鑫新材料有限公司 | But real time monitoring's quartz sand smelting furnace |
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| JPH0675712U (en) * | 1993-04-09 | 1994-10-25 | 株式会社クラウド | Plastic melting equipment |
| JPH07284649A (en) * | 1994-04-15 | 1995-10-31 | Asahi Sanac Kk | Melting tank of thermoplastic resin |
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| CN112895527A (en) * | 2021-03-02 | 2021-06-04 | 潍坊市宇虹防水材料(集团)有限公司 | Preparation method of high-temperature-resistant modified asphalt waterproof coiled material and waterproof coiled material |
| CN113368785A (en) * | 2021-07-20 | 2021-09-10 | 深圳市三工色彩科技有限公司 | Plastic modification device and method |
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2021
- 2021-07-20 CN CN202110819385.4A patent/CN113368785A/en not_active Withdrawn
- 2021-12-17 CN CN202111553855.3A patent/CN114618387B/en active Active
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| JPH0675712U (en) * | 1993-04-09 | 1994-10-25 | 株式会社クラウド | Plastic melting equipment |
| JPH07284649A (en) * | 1994-04-15 | 1995-10-31 | Asahi Sanac Kk | Melting tank of thermoplastic resin |
| CN206701263U (en) * | 2017-04-25 | 2017-12-05 | 山东鼎鼎化学科技股份有限公司 | A kind of MBS resin emulsions coacervation device |
| CN209663234U (en) * | 2019-01-25 | 2019-11-22 | 九江彬彬塑业有限公司 | A kind of modifying plastics production metering charging device |
| CN112277286A (en) * | 2020-10-12 | 2021-01-29 | 合肥新胜塑料科技有限公司 | Preparation process of modified plastic |
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| CN113368785A (en) * | 2021-07-20 | 2021-09-10 | 深圳市三工色彩科技有限公司 | Plastic modification device and method |
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| CN114618387A (en) | 2022-06-14 |
| CN113368785A (en) | 2021-09-10 |
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