CN117091682A - Plastic master batch weighing device and weighing method thereof - Google Patents
Plastic master batch weighing device and weighing method thereof Download PDFInfo
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- CN117091682A CN117091682A CN202311354973.0A CN202311354973A CN117091682A CN 117091682 A CN117091682 A CN 117091682A CN 202311354973 A CN202311354973 A CN 202311354973A CN 117091682 A CN117091682 A CN 117091682A
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- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 78
- 238000005303 weighing Methods 0.000 title claims abstract description 66
- 239000004033 plastic Substances 0.000 title claims abstract description 50
- 229920003023 plastic Polymers 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000004364 calculation method Methods 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- 230000005484 gravity Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- 238000007791 dehumidification Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000009958 sewing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004595 color masterbatch Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006052 feed supplement Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
- F26B25/225—Controlling the drying process in dependence on liquid content of solid materials or objects by repeated or continuous weighing of the material or a sample thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
- G01N33/442—Resins; Plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a plastic master batch weighing device and a weighing method thereof, and relates to the technical field of weighing devices. According to the invention, the weighing parameters can be regulated and controlled according to the water content of the plastic master batch, and the weighing accuracy is improved.
Description
Technical Field
The invention relates to the technical field of weighing devices, in particular to a plastic master batch weighing device and a weighing method thereof.
Background
The plastic master batch is a concentrated body prepared by carrying the plastic auxiliary agent in the resin in an ultra-constant manner, and the plastic auxiliary agent is not needed to be added when the plastic product is manufactured, and only the master batch with the ultra-constant is needed to be added in proportion. The master batch has various varieties, such as filling master batch, color master batch, flame retardant master batch, antistatic master batch, wear-resistant master batch, multifunctional master batch and the like.
The production process of the plastic master batch comprises the steps of raw material weighing, proportioning, mixing, extruding, cooling, granulating, checking, packaging and metering and warehousing, wherein the raw material weighing before production and the finished product weighing after production are required to be carried out twice, and the master batch is a granular solid with the particle size of 0.1-3 mm.
The plastic master batch has certain moisture absorption characteristic, the individual mass of the plastic master batch is increased when the plastic master batch is exposed in a humid environment for a long time, and the plastic master batch is often directly weighed and packaged during weighing, and the total weighing quantity is reduced due to the addition of a plurality of individual errors.
Disclosure of Invention
The invention aims to provide a plastic master batch weighing device and a weighing method thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a plastics masterbatch weighing device and weighing method thereof, includes storage silo, measurement silo, play feed bin, dehumidification subassembly and masterbatch weigh regulation and control system, the dehumidification subassembly includes hygrometer one, send air pump, heating module, exhaust hood, aspiration pump, temperature control box, hygrometer two, level gauge, wherein the storage silo is erect in measurement silo upside, play feed bin sets up in measurement silo downside, hygrometer one exposes in the device external environment, heating module is fixed on measurement silo and communicates with the aspiration pump, the exhaust hood cover is established in measurement silo upside, aspiration pump input and exhaust hood intercommunication, the aspiration pump output communicates to the inside of temperature control box, be provided with alternating temperature chamber and inner chamber in the temperature control box, hygrometer two, level gauge all set up in the inner chamber, masterbatch weighing system and each subassembly signal connection for regulation and control weighing process.
Further, the hygrometer is used for measuring the humidity condition of external environment, the air pump is used for extracting outside air, carries to the measurement storehouse after heating through heating module, the exhaust hood is used for having kept away the interior gaseous outflow of measurement storehouse, the aspiration pump is suitable for through the inner chamber of exhaust hood with the interior gaseous extraction of measurement storehouse to the control by temperature change case, and the inner chamber upside is provided with the passageway that communicates to the control by temperature change case outside, by the inside gaseous output of outside air pump control by temperature change case outside, and the inner chamber downside is provided with the passageway that communicates to the control by temperature change case outside equally, by the inside water output of outside water pump control temperature change case, the temperature change chamber is used for reducing the intracavity temperature, the hygrometer is two be used for detecting the humidity condition in the inner chamber, the level gauge is used for detecting the interior condensate water volume of intracavity.
Further, the master batch weighing regulation and control system comprises a channel switch module, a weighing module and a difference regulation and control module, wherein the difference regulation and control module further comprises a humidity difference calculation module and a quality difference calculation module, the switch module is used for controlling the opening and closing conditions of channels among the storage bin, the metering bin, the discharging bin and the outside, the weighing module is arranged in the metering bin and is used for measuring the mass of plastic master batch input in the metering bin, the humidity difference calculation module is used for calculating the water vapor quantity taken away by a dehumidification component from the metering bin, and the quality difference calculation module is suitable for adjusting weighing parameters of the next batch according to the calculation result of the humidity difference calculation module.
Further, the heating module comprises an electric heating block and a filter screen, wherein the filter screen is arranged on one side facing the metering bin and is used for removing dust in external air and preventing master batch in the metering bin from entering the heating module.
Further, the measuring bin comprises a fixing frame, two fixing plates, a first movable plate, a first air cylinder, a connecting seat, a gravity sensor and a fixing seat, wherein the fixing seat is fixed on an external frame, the gravity sensor is arranged on the fixing seat, a connecting seat cover is arranged on the gravity sensor, a non-telescopic part of the first air cylinder is fixed at the bottom of the connecting seat, a telescopic end of the first air cylinder is connected with the first movable plate, the fixing frame is provided with a sliding groove matched with the first movable plate, and the fixing plates are fixed on the fixing frame to be spliced into a shell of the measuring bin.
Further, the fixed frame and the fixed plate are fixed, the movable plate I is driven to move back and forth on the fixed frame through telescopic movement of the air cylinder I, so that opening and closing of the bottom of the measuring bin are realized, and the gravity sensor is used for measuring the mass of materials in the measuring bin.
Further, the storage bin comprises a first shell, a second movable plate and a second cylinder, wherein the second movable plate is arranged corresponding to the opening of the bottom of the first shell, and the second cylinder is connected with the second movable plate and used for controlling the second movable plate to move so as to realize opening and closing of the bottom of the storage bin.
Further, the number of the metering bins can be a plurality, and if the mass of the master batch needing to be packaged at one time exceeds the range which can be accommodated by a single metering bin, a mode of weighing and adding a plurality of metering bins can be adopted.
Further, the discharging bin comprises a second shell, a movable clamping plate, a third cylinder and limiting plates, wherein the movable clamping plate is arranged at the opening of the second bottom of the shell, the third cylinder is connected with the movable clamping plate and used for controlling the opening and closing of the movable clamping plate, and the limiting plates are fixed on the outer frame and arranged on two sides of the movable clamping plate and used for limiting the opening range of the movable clamping plate.
Further, the frame is arranged on one side of the conveyor belt, and the conveyor belt is further provided with a bag sewing device and a rotating device, wherein the bag sewing device is used for sewing an opening of the master batch packaging bag, and the rotating device is used for rotating the master batch packaging bag.
Further, the specific method is as follows:
s1, filling plastic master batches into a storage bin, and setting initial weighing parameters by a weighing module;
s2, opening the bottom of the storage bin, conveying plastic master batches with set quality into the metering bin, and closing the storage bin;
s3, starting a heating module, conveying hot air into a metering bin by an air conveying pump, drying the inside of the metering bin for a certain time, pumping the heated air into a temperature control box by an air pumping pump, and collecting data detected by a hygrometer II and a liquid level meter by a humidity difference calculating module when the inside air is cooled to the outside room temperature, calculating the relative water quantity entrained in the air at the moment, and recording the relative water quantity as taken away moisture dried from a plastic master batch;
s4, repeating the step S3 until the air humidity calculated by the humidity difference calculation module is equal to the outside, and integrating all data to obtain the total moisture carried by the master batch;
s5, the quality difference calculation module calculates the water content carried by the single plastic master batch and the quality when the number of the ideal master batch is to be reached according to the water sum obtained by the humidity difference calculation module, and the parameters of the symmetrical weighing module are adjusted and the master batch of the next batch is weighed based on the water content.
Compared with the prior art, the invention has the following beneficial effects: the dehumidification assembly is arranged, so that the plastic master batch can be symmetrically remolded for drying, and the packaging of the dried plastic master batch is ensured; through being provided with masterbatch and weigh regulation and control system, can measure stoving moisture, detect the moisture sum that contains in the batch plastics masterbatch to judge the influence to weighing, determine whether need carry out the feed supplement, improved the accuracy of weighing.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a dehumidification assembly of the present invention;
FIG. 2 is a schematic view of a metering bin of the present invention;
FIG. 3 is a schematic view of a discharge bin of the present invention;
FIG. 4 is an overall schematic of the present invention;
in the figure: 1. a storage bin; 11. a first shell; 12. a second movable plate; 13. a second cylinder; 2. a metering bin; 21. a fixing frame; 22. a fixing plate; 23. a first movable plate; 24. a first cylinder; 25. a connecting seat; 26. a gravity sensor; 27. a fixing seat; 3. discharging the material bin; 31. a second shell; 32. a movable clamping plate; 33. a third cylinder; 34. a limiting plate; 4. a dehumidifying component; 41. a hygrometer I; 42. an air supply pump; 43. a heating module; 431. an electric heating block; 432. a filter screen; 44. an air-extracting cover; 45. an air extracting pump; 46. a temperature control box; 461. a temperature changing cavity; 462. an inner cavity; 47. a second hygrometer; 48. a liquid level gauge; 5. a frame; 6. a conveyor belt; 7. a bag sewing device; 8. and a rotating device.
Detailed Description
The technical scheme of the present invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a plastics masterbatch weighing device and weighing method thereof, including storage silo 1, measurement silo 2, ejection of compact storehouse 3, dehumidification subassembly 4 and masterbatch weighing regulation and control system, dehumidification subassembly 4 includes hygrometer one 41, air feed pump 42, heating module 43, the cover of bleeding 44, aspiration pump 45, temperature control box 46, hygrometer two 47, the level gauge 48, wherein storage silo 1 erects in measurement silo 2 upside, ejection of compact storehouse 3 sets up in measurement silo 2 downside, hygrometer one 41 exposes in the device external environment, heating module 43 is fixed on measurement silo 2 and communicates with air feed pump 42, the cover of bleeding 44 is covered in measurement silo 2 upside, aspiration pump 45 input communicates with cover of bleeding 44, aspiration pump 45 output communicates to the inside of temperature control box 46, be provided with temperature changing chamber 461 and inner chamber 462 in the temperature control box 46, hygrometer two 47, the level gauge 48 all sets up in inner chamber 462, masterbatch weighing regulation and control system is connected with each subassembly signal for regulation and control weighing process.
The first hygrometer 41 is used for measuring humidity conditions of external environments, the first air pump 42 is used for pumping external air, the air is heated by the heating module 43 and then is conveyed to the metering bin 2, the air pumping cover 44 is used for blocking air in the metering bin 2 from flowing outwards, the air pumping pump 45 is suitable for pumping air in the metering bin 2 to an inner cavity 462 of the temperature control box 46 through the air pumping cover 44, a channel communicated to the outside of the temperature control box 46 is arranged on the upper side of the inner cavity 462, air output inside the temperature control box 46 is controlled by the external air pump, a channel communicated to the outside of the temperature control box 46 is also arranged on the lower side of the inner cavity 462, water output inside the temperature control box 46 is controlled by the external water pump, the temperature changing cavity 461 is used for reducing temperature in the inner cavity 462, the second hygrometer 47 is used for detecting humidity conditions in the inner cavity 462, and the liquid level meter 48 is used for detecting condensate water in the inner cavity 462.
What needs to be stated is: the temperature changing cavity 461 is internally provided with flowing cooling medium, such as cooling water, so that the inner cavity 462 is subjected to heat exchange and temperature reduction in a water cooling mode, the cooling medium is provided by an external cooling device, and a temperature sensor for detecting temperature change is arranged in the inner cavity 462.
The master batch weighing regulation and control system comprises a channel switch module, a weighing module and a difference regulation and control module, wherein the difference regulation and control module comprises a humidity difference calculation module and a quality difference calculation module, the switch module is used for controlling the opening and closing conditions of channels between a storage bin 1 and a metering bin 2, between the metering bin 2 and a discharging bin 3 and between the discharging bin 3 and the outside, the weighing module is arranged in the metering bin 2 and is used for measuring the mass of plastic master batch input in the metering bin 2, the humidity difference calculation module is used for calculating the water vapor quantity taken away by a dehumidification component 4 from the materials in the metering bin 2, and the quality difference calculation module is suitable for adjusting weighing parameters of the next batch according to the calculation result of the humidity difference calculation module.
The heating module 43 comprises an electric heating block 431 and a filter screen 432, wherein the filter screen 432 is arranged on one side facing the metering bin 2 and is used for removing dust in the external air and preventing master batch in the metering bin 2 from entering the heating module 43.
The metering bin 2 comprises a fixed frame 21, two fixed plates 22, a movable plate one 23, a cylinder one 24, a connecting seat 25, a gravity sensor 26 and a fixed seat 27, wherein the fixed seat 27 is fixed on an external frame 5, the gravity sensor 26 is arranged on the fixed seat 27, the connecting seat 25 is covered on the gravity sensor 26, a non-telescopic part of the cylinder one 24 is fixed at the bottom of the connecting seat 25, a telescopic end of the cylinder one 24 is connected with the movable plate one 23, the fixed frame 21 is provided with a chute matched with the movable plate one 23, and the two fixed plates 22 are fixed on the fixed frame 21 and spliced into a shell of the metering bin 2.
In actual operation, the fixed frame 21 and the fixed plate 22 are fixed, the movable plate one 23 is driven to move back and forth on the fixed frame 21 through telescopic movement of the cylinder one 24, so that the bottom of the measuring bin 2 is opened and closed, and the gravity sensor 26 is used for measuring the mass of materials in the measuring bin 2.
The storage bin 1 comprises a first shell 11, a second movable plate 12 and a second cylinder 13, wherein the second movable plate 12 is arranged corresponding to the opening of the bottom of the first shell 11, and the second cylinder 13 is connected with the second movable plate 12 and is used for controlling the second movable plate 12 to move so as to realize the opening and closing of the bottom of the storage bin 1.
What needs to be stated is: the number of the metering bins 2 can be a plurality, and if the mass of the master batch needing to be packaged at one time exceeds the range which can be accepted by a single metering bin 2, a mode of weighing and adding a plurality of metering bins 2 can be adopted.
The discharging bin 3 comprises a second shell 31, a movable clamping plate 32, a third air cylinder 33 and limiting plates 34, wherein the movable clamping plate 32 is arranged at the bottom opening of the second shell 31, the third air cylinder 33 is connected with the movable clamping plate 32 and used for controlling the movable clamping plate 32 to open and close, and the limiting plates 34 are fixed on the outer frame 5 and arranged on two sides of the movable clamping plate 32 and used for limiting the opening range of the movable clamping plate 32.
The frame 5 sets up in conveyer belt 6 one side, still is provided with seam bagging apparatus 7 and rotary device 8 on the conveyer belt 6, and wherein seam bagging apparatus 7 is used for the opening of masterbatch wrapping bag to be sewed up, and rotary device 8 is used for rotatory masterbatch wrapping bag.
The specific implementation method is as follows:
s1, filling plastic master batches into a storage bin 1, and setting initial weighing parameters by a weighing module;
s2, the bottom of the storage bin 1 is opened, and plastic master batches with set quality are conveyed into the metering bin 2 and then closed;
s3, the heating module 43 is started, the air supply pump 42 supplies hot air into the metering bin 2, the interior of the metering bin is dried for a certain time and then is pumped to the temperature control box 46 by the air exhaust pump 45, when the interior gas is cooled to the external room temperature, the humidity difference calculation module collects data detected by the second hygrometer 47 and the liquid level meter 48, calculates the relative water quantity entrained in the gas at this time, and records the relative water quantity as the water taken away from the drying of the plastic master batch;
s4, repeating the step S3 until the air humidity calculated by the humidity difference calculation module is equal to the outside, and integrating all data to obtain the total moisture carried by the master batch;
s5, the quality difference calculation module calculates the water content carried by the single plastic master batch and the quality when the number of the ideal master batch is to be reached according to the water sum obtained by the humidity difference calculation module, and the parameters of the symmetrical weighing module are adjusted and the master batch of the next batch is weighed based on the water content.
Specifically, in S2 and S3: setting the liquid height detected by the liquid level gauge 48 to be h n N is a positive integer, indicating a batch of gas input, and the bottom area S of the cavity 462 is constant, the detected precipitated water isThe total amount of precipitated water isI represents the serial number of the gas input batch, ρ Water and its preparation method Defaulting to 1g/cm 2 The humidity detected by the second hygrometer 47 is phi n I.e. relative humidity, the humidity detected by hygrometer 41 is phi 0 The absolute humidity is the default air pressure P is equal to phi n And phi is equal to 0 Under the condition of equal temperature, calculating humidity differenceAnd pass through phi ∆ The air water content and temperature and humidity comparison table is used for obtaining the water content and the water content g n And calculate the total amount of additional water contentFinally obtaining the total moisture content entrained in each batch of plastic master batches。
S4, setting a dry stateThe mass of the next single plastic master batch is a, and the quantity of the plastic master batch displaced by the additional moisture carried by one batch of plastic master batch isIf N is between 0 and 5, the moisture content of the plastic master batch can be determined not to cause too large quality error on the whole, the packaging of the batch can reach a set value by default, the sealing treatment can be directly carried out, if N is greater than 5, the moisture content of the plastic master batch is determined to cause too large quality error on the whole, the material is required to be supplemented, and the quality of the material is equal to that of the material。
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A plastic masterbatch weighing device which is characterized in that: comprising the following steps:
the system comprises a storage bin (1), a metering bin (2), a discharging bin (3), a dehumidifying component (4) and a master batch weighing regulation system, wherein the dehumidifying component (4) comprises a first hygrometer (41), an air supply pump (42), a heating module (43), an air exhaust cover (44), an air exhaust pump (45), a temperature control box (46), a second hygrometer (47) and a liquid level meter (48), wherein the storage bin (1) is erected on the upper side of the metering bin (2), the discharging bin (3) is arranged on the lower side of the metering bin (2), the first hygrometer (41) is exposed in the external environment of the device, the heating module (43) is fixed on the metering bin (2) and is communicated with the air supply pump (42), the air exhaust cover (44) is covered on the upper side of the metering bin (2), the input end of the air exhaust pump (45) is communicated with the air exhaust cover (44), the output end of the air exhaust pump (45) is communicated to the inside the temperature control box (46), a temperature change cavity (461) and an inner cavity (462) are arranged in the temperature control box (46), the first hygrometer (41) is exposed to the external environment, the first hygrometer (47) is connected with the master batch weighing component, and the second hygrometer (462) is connected with the master batch weighing regulation system.
2. A plastic masterbatch weighing device according to claim 1, characterized in that:
the master batch weighing regulation and control system comprises a channel switch module, a weighing module and a difference regulation and control module, wherein the difference regulation and control module comprises a humidity difference calculation module and a quality difference calculation module, the switch module is used for controlling the channel opening and closing conditions between a storage bin (1) and a metering bin (2), between the metering bin (2) and a discharging bin (3) and between the discharging bin (3) and the outside, the weighing module is arranged in the metering bin (2) and is used for measuring the quality of plastic master batch input in the metering bin (2), the humidity difference calculation module is used for calculating the water vapor quantity taken away by a dehumidification component (4) from the metering bin (2), and the quality difference calculation module is suitable for adjusting weighing parameters of the next batch according to the calculation result of the humidity difference calculation module.
3. A plastic masterbatch weighing device according to claim 2, characterized in that:
the heating module (43) comprises an electric heating block (431) and a filter screen (432), wherein the filter screen (432) is arranged on one side facing the metering bin (2) and is used for removing dust in external air and preventing master batch in the metering bin (2) from entering the heating module (43).
4. A plastic masterbatch weighing device according to claim 3, characterized in that:
the metering bin (2) comprises a fixed frame (21), two fixed plates (22), a movable plate (23), a first air cylinder (24), a connecting seat (25), a gravity sensor (26) and a fixed seat (27), wherein the fixed seat (27) is fixed on an external frame (5), the gravity sensor (26) is arranged on the fixed seat (27), the connecting seat (25) is covered on the gravity sensor (26), a non-telescopic part of the first air cylinder (24) is fixed at the bottom of the connecting seat (25), a telescopic end of the first air cylinder (24) is connected with the first movable plate (23), the fixed frame (21) is provided with a sliding groove matched with the first movable plate (23), and the fixed plate (22) is fixed on the fixed frame (21) to be spliced into a shell of the metering bin (2).
5. A plastic masterbatch weighing device according to claim 4, characterized in that:
the storage bin (1) comprises a first shell (11), a second movable plate (12) and a second cylinder (13), wherein the second movable plate (12) is arranged at the opening of the bottom of the first shell (11) correspondingly, and the second cylinder (13) is connected with the second movable plate (12) and used for controlling the second movable plate (12) to move so as to realize opening and closing of the bottom of the storage bin (1).
6. A plastic masterbatch weighing device according to claim 5, characterized in that:
the discharging bin (3) comprises a second shell (31), a movable clamping plate (32), a third cylinder (33) and limiting plates (34), wherein the movable clamping plate (32) is arranged at the bottom opening of the second shell (31), the third cylinder (33) is connected with the movable clamping plate (32) and used for controlling the opening and closing of the movable clamping plate (32), and the limiting plates (34) are fixed on the outer frame (5) and are arranged on two sides of the movable clamping plate (32) and used for limiting the opening amplitude of the movable clamping plate (32).
7. A plastic masterbatch weighing device according to claim 6, characterized in that:
the machine frame (5) is arranged on one side of the conveyor belt (6), the conveyor belt (6) is further provided with a bag sewing device (7) and a rotating device (8), wherein the bag sewing device (7) is used for sewing an opening of a masterbatch packaging bag, and the rotating device (8) is used for rotating the masterbatch packaging bag.
8. The weighing method of the plastic master batch weighing device according to claim 7, wherein the weighing method comprises the following steps of:
the specific method comprises the following steps:
s1, filling plastic master batches into a storage bin (1), and setting initial weighing parameters by a weighing module;
s2, opening the bottom of the storage bin (1), conveying plastic master batches with set quality into the metering bin (2), and closing the plastic master batches;
s3, starting a heating module (43), conveying hot air into a metering bin (2) by an air supply pump (42), drying the inside of the metering bin for a certain time, pumping the heated air into a temperature control box (46) by an air pump (45), collecting data detected by a second hygrometer (47) and a liquid level meter (48) by a humidity difference calculation module when the inside air is cooled to the outside room temperature, calculating the relative water quantity entrained in the air, and recording the relative water quantity as the water taken away by drying the plastic master batch;
s4, repeating the step S3 until the air humidity calculated by the humidity difference calculation module is equal to the outside, and integrating all data to obtain the total moisture carried by the master batch;
s5, the quality difference calculation module calculates the water content carried by the single plastic master batch and the quality when the number of the ideal master batch is to be reached according to the water sum obtained by the humidity difference calculation module, and the parameters of the symmetrical weighing module are adjusted and the master batch of the next batch is weighed based on the water content.
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| CN116256046A (en) * | 2023-05-16 | 2023-06-13 | 常州市双成塑母料有限公司 | Plastic masterbatch weighing machine |
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| CN208180002U (en) * | 2018-05-07 | 2018-12-04 | 广州增城市大发塑胶颜料有限公司 | A kind of environment friendly halogen-free fireproof polypropylene Masterbatch metered dispensing unit |
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| CN117091682B (en) | 2023-12-29 |
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