CN113247644A - Rotary drum drying automatic feeding system and method for recycled polyester spinning raw materials - Google Patents
Rotary drum drying automatic feeding system and method for recycled polyester spinning raw materials Download PDFInfo
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- CN113247644A CN113247644A CN202110312050.3A CN202110312050A CN113247644A CN 113247644 A CN113247644 A CN 113247644A CN 202110312050 A CN202110312050 A CN 202110312050A CN 113247644 A CN113247644 A CN 113247644A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/54—Gates or closures
- B65D90/58—Gates or closures having closure members sliding in the plane of the opening
- B65D90/587—Gates or closures having closure members sliding in the plane of the opening having a linear motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
- B65G47/44—Arrangements or applications of hoppers or chutes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/56—Switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/42—Devices for emptying otherwise than from the top using belt or chain conveyors
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
Abstract
The invention relates to the field of chemical fibers, in particular to a drum drying automatic feeding system and method for a recycled polyester spinning raw material. The system comprises a storage bin, a rotary drum, a positive pressure material blowing fan, an air locking rotary valve, a pneumatic conveying pipeline, a reversing device, a cyclone separator, a belt weighing and quantitative feeder and an air locking rotary valve; the lower part of the cyclone separator is provided with an intermediate storage bin, the intermediate storage bin is provided with a weighing sensor, and the bottom of the intermediate storage bin is provided with an opening and closing discharging gate valve; a feeding screw conveyor is arranged below the opening and closing discharge gate valve, a plurality of rotary drum material receiving control devices are arranged on the feeding screw conveyor in series, and each rotary drum material receiving control device is connected with one rotary drum. The equipment automatically finishes material weighing, proportioning and conveying by the equipment, thereby reducing the labor intensity of workers and the production cost in the production process, and improving the intelligent level and the product quality of the enterprise production process.
Description
Technical Field
The invention relates to the field of chemical fibers, in particular to a drum drying automatic feeding system and method for a recycled polyester spinning raw material.
Background
At present, in the chemical fiber industry, particularly in the short fiber industry, bottle flakes or bubble materials are used as raw materials, the raw materials need to be subjected to drum dewatering, drying and crystallization before entering a screw, the drum drying time is about 6 hours, and therefore a large number of drum drying devices are arranged to meet the spinning requirements. An existing drum drying automatic feeding system for recycled polyester spinning raw materials is shown in figure 1, when the drum drying is finished and the discharging is finished, the drum is manually operated to rotate, an inlet is aligned with a feeding port, and a blanking hopper 4 is manually placed in the feeding port; then manually pushing the materials to be fed and unloaded to a feed opening of a storage bin 1 on one side, wherein the storage bin 1 stores the raw materials with quantitative proportion, a discharge valve of the storage bin is opened, and a weighbridge 3 is arranged on the ground to be weighed; and meanwhile, the weight display is manually paid attention to in real time, when the set weight is reached, the discharge valve is manually closed, and then the feeding trolley 2 is pushed to the blanking hopper for discharging.
The prior art has the following defects: the design capacity of the trolley cannot be overlarge due to the limitation of manpower, and the rotary drum can be filled only by loading and unloading the feeding trolley for multiple times; meanwhile, in order to meet production requirements, the process needs to be completed as soon as possible, and therefore personnel pushing trolleys need to be added temporarily in the feeding process. In addition, after the feeding of each rotary drum is finished, auxiliary materials in a certain proportion are required to be added manually. Therefore, the feeding mode needs more labor force, many processes need manual operation, certain manual operation errors exist, and the automation degree of the whole equipment is reduced.
Disclosure of Invention
The purpose of the invention is: aiming at the problems, the automatic drum drying feeding system and the method for the recycled polyester spinning raw materials are provided, wherein the weighing of the materials, the proportioning of the ingredients and the conveying of the materials are all automatically completed by equipment, so that the labor intensity of workers and the production cost in the production process are reduced, and the intelligent level and the product quality in the production process of enterprises are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic feeding system for drum drying of recycled polyester spinning raw materials comprises a storage bin, a drum, a positive-pressure material blowing fan, an air locking rotary valve, a pneumatic conveying pipeline, a reversing device and a cyclone separator, wherein the positive-pressure material blowing fan is arranged on the storage bin; a belt weighing and quantitative feeding machine is arranged at the outlet of the storage bin and is connected with the air locking rotary valve, the belt weighing and quantitative feeding machine is connected to the feeding end of the pneumatic conveying pipeline through the air locking rotary valve, and the air inlet end of the pneumatic conveying pipeline is connected with the positive-pressure material blowing fan; the pneumatic conveying pipeline is connected with a plurality of reversing devices in series, each reversing device is connected with one cyclone separator, the input end of each cyclone separator is connected with the pneumatic conveying pipeline through the reversing device, the lower part of each cyclone separator is provided with an intermediate storage bin, the intermediate storage bin is provided with a weighing sensor, and the bottom of the intermediate storage bin is provided with an opening and closing discharging gate valve; a feeding screw conveyor is arranged below the opening and closing discharge gate valve, a plurality of rotary drum material receiving control devices are arranged on the feeding screw conveyor in series, and each rotary drum material receiving control device is connected with one rotary drum.
As preferred, this system still includes the accurate measuring conveyer of auxiliary material, and the accurate measuring conveyer of auxiliary material sets up in one side of belt weighing constant feeder, and the accurate measuring conveyer of auxiliary material is connected to the feed inlet of lock wind rotary valve.
Preferably, the belt weighing and constant feeding machine comprises a constant feeding machine body, a driving device, a weighing device, a speed measuring device and an intelligent weighing control system.
Preferably, the rotary drum material receiving control device comprises an automatic opening and closing mechanism of a conveyor, an automatic lifting blanking hopper and a rotary drum material feeding opening and closing mechanism; the automatic opening and closing mechanism of the conveyor is positioned at the outlet of the feeding spiral conveyor, and the feeding end of the automatic lifting blanking hopper is positioned below the automatic opening and closing mechanism of the conveyor; the discharging end of the automatic lifting blanking hopper is positioned above the rotary drum feeding opening and closing mechanism, and the rotary drum feeding opening and closing mechanism is positioned above the rotary drum feeding hole.
Preferably, the automatic opening and closing mechanism of the conveyor comprises a conveyor plug board opening and closing device, a conveyor control cylinder, a conveyor cylinder plug board, a first induction switch and a second induction switch; the output end of the control cylinder of the conveyor is connected with the plug board of the cylinder of the conveyor, and the plug board of the cylinder of the conveyor is connected with the discharge end of the opening and closing device of the plug board of the conveyor; the first inductive switch and the second inductive switch correspond to the contraction and extension positions of the conveyor control cylinder respectively.
Preferably, the automatic lifting blanking hopper comprises an automatic lifting device, a lifting cylinder, a third inductive switch and a fourth inductive switch; the output end of the lifting cylinder is connected with the automatic lifting device; the diameter of the upper opening of the automatic lifting device is larger than that of the outlet of the conveyor inserting plate opening and closing device; the third inductive switch and the fourth inductive switch correspond to the extending and contracting positions of the lifting cylinder respectively.
Preferably, the drum feeding opening and closing mechanism comprises a drum plugboard opening and closing device, a drum control cylinder, a drum cylinder plugboard, a fifth inductive switch and a sixth inductive switch; the output end of the rotary drum control cylinder is connected with a rotary drum cylinder plug board, and the output end of the rotary drum cylinder plug board is connected with the discharge end of the rotary drum plug board opening and closing device; the diameter of the lower opening of the automatic lifting device is smaller than that of the opening and closing device opening of the rotary drum flashboard; the fifth inductive switch and the sixth inductive switch respectively correspond to the contraction and extension positions of the drum control cylinder.
In addition, the invention also discloses a drum drying automatic feeding method of the recycled polyester spinning raw material, which comprises the following steps:
(S1) quantitative discharging: the proportioned materials are conveyed to a storage bin for storage, a belt weighing and quantifying feeder at an outlet at the bottom of the storage bin performs quantitative control on the materials in the modes of quantitative value setting, weighing detection, speed detection, flow calculation, flow control and the like, and the materials are conveyed into a pneumatic conveying pipeline through an air-locking rotary valve;
(S2) pipeline transportation: the positive-pressure material blowing fan conveys materials along a pneumatic conveying pipeline, and the switching materials in different paths are adjusted by the reversing device and blown to the cyclone separators in the corresponding paths so as to be dropped to the intermediate storage bins in the corresponding paths;
(S3) dosing: the control system adjusts the working conditions of all the devices to enable the intermediate storage bins to reach the set material weight;
(S4) drum feeding: and the drum feeding end of the corresponding station is communicated with the discharging end of the feeding screw conveyor under the control of the drum material receiving control device, and the feeding screw conveyor conveys the materials in the intermediate storage bin to the drum along a communicated channel to finish the drum drying and automatic feeding process of the regenerated polyester spinning raw material.
The drum drying automatic feeding system and method for the recycled polyester spinning raw materials, which adopt the technical scheme, have the advantages that: the feeding system only needs one control room operator, so that the labor cost is greatly reduced; the weighing of materials, the proportioning of ingredients and the conveying of materials are automatically completed, the feeding amount is accurate, the proportioning is accurate, and the product quality is stable; thereby improving the intelligent level of the production process of enterprises, reducing the labor cost and improving the product quality.
Drawings
FIG. 1 is a schematic structural diagram of a drum drying automatic feeding system for recycled polyester spinning raw materials.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 and 4 are partial enlarged structural schematic diagrams of the rotary drum feeding equipment.
Fig. 5 is a schematic structural diagram of the rotary drum receiving control device in a non-feeding state.
Fig. 6 is a schematic structural diagram of the rotary drum receiving control device in a feeding state.
The first number 1-rotary drum, the second number 2-rotary drum, the third number 3-rotary drum, 11-2, 12-2 and 13-2 are respectively a cyclone separator, an intermediate storage bin and a feeding screw conveyor on the second conveying path, 11-3, 12-3 and 13-3 are respectively a cyclone separator, an intermediate storage bin and a feeding screw conveyor on the third conveying path, L1 and L2 are respectively corresponding positions of a first inductive switch and a second inductive switch, M1 and M2 are respectively corresponding positions of a third inductive switch and a fourth inductive switch, and N1 and N2 are respectively corresponding positions of a fifth inductive switch and a sixth inductive switch.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings.
Example 1
2-6, the system comprises a storage bin 1 and a rotary drum 17, and further comprises a positive pressure material blowing fan 7, an air locking rotary valve 8, a pneumatic conveying pipeline 9, a reversing device 10 and a cyclone separator 11; a belt weighing and quantitative feeding machine 5 is arranged at the outlet of the storage bin 1, the belt weighing and quantitative feeding machine 5 is connected with the air locking rotary valve 8, the belt weighing and quantitative feeding machine 5 is connected to the feeding end of the pneumatic conveying pipeline 9 through the air locking rotary valve 8, and the air inlet end of the pneumatic conveying pipeline 9 is connected with the positive-pressure material blowing fan 7; the pneumatic conveying pipeline 9 is connected with a plurality of reversing devices 10 in series, each reversing device 10 is connected with one cyclone separator 11, the input end of each cyclone separator 11 is connected with the pneumatic conveying pipeline 9 through the reversing device 10, the lower part of each cyclone separator 11 is provided with an intermediate storage bin 12, each intermediate storage bin 12 is provided with a weighing sensor for detecting the weight of materials in the corresponding storage bin, and the bottom of each intermediate storage bin 12 is provided with an opening and closing discharge gate valve; a feeding screw conveyor 13 is arranged below the opening and closing discharge gate valve, a plurality of rotary drum material receiving control devices are arranged on the feeding screw conveyor 13 in series, and each rotary drum material receiving control device is connected with one rotary drum 17.
The system further comprises an auxiliary material accurate metering conveyor 6, the auxiliary material accurate metering conveyor 6 is arranged on one side of the belt weighing and quantitative feeding machine 5, and the auxiliary material accurate metering conveyor 6 is connected to a feeding hole of the air locking rotary valve 8.
The belt weighing and constant feeding machine 5 comprises a constant feeding machine body, a driving device, a weighing device, a speed measuring device and an intelligent weighing control system.
The rotary drum material receiving control device comprises a conveyor automatic opening and closing mechanism 14, an automatic lifting blanking hopper 15 and a rotary drum material feeding opening and closing mechanism 16; the automatic opening and closing mechanism 14 of the conveyor is positioned at the outlet of the feeding screw conveyor 13, and the feeding end of the automatic lifting blanking hopper 15 is positioned below the automatic opening and closing mechanism 14 of the conveyor; the discharging end of the automatic lifting blanking hopper 15 is positioned above the rotary drum feeding opening and closing mechanism 16, and the rotary drum feeding opening and closing mechanism 16 is positioned above the feeding hole of the rotary drum 17.
The automatic opening and closing mechanism 14 of the conveyor comprises a conveyor plug board opening and closing device 18, a conveyor control cylinder 19, a conveyor cylinder plug board, a first induction switch and a second induction switch; the output end of the conveyor control cylinder 19 is connected with the conveyor cylinder plug board, and the conveyor cylinder plug board is connected with the discharge end of the conveyor plug board opening and closing device 18; the first and second inductive switches correspond to the retracted and extended positions of the conveyor control cylinder 19, respectively, to detect whether the mechanism is retracted into position.
The automatic lifting blanking hopper 15 comprises an automatic lifting device 20, a lifting cylinder 21, a third inductive switch and a fourth inductive switch; the output end of the lifting cylinder 21 is connected with the automatic lifting device 20; the diameter of the upper opening of the automatic lifting device 20 is larger than that of the outlet of the conveyor inserting plate opening and closing device 18, so that the material at the outlet of the conveyor inserting plate opening and closing device 18 can completely fall into the automatic lifting device 20; (ii) a The third and fourth inductive switches correspond to the extended and retracted positions of the lift cylinder 21, respectively, to detect whether the mechanism is in place.
The rotary drum feeding opening and closing mechanism 16 comprises a rotary drum plugboard opening and closing device 22, a rotary drum control cylinder 23, a rotary drum cylinder plugboard, a fifth inductive switch and a sixth inductive switch; the output end of the rotary drum control cylinder 23 is connected with a rotary drum cylinder plug board, and the output end of the rotary drum cylinder plug board is connected with the discharge end of the rotary drum plug board opening and closing device 22; the diameter of the lower opening of the automatic lifting device 20 is smaller than that of the opening and closing device 22 of the rotary drum flashboard; when the drum feeding opening-closing mechanism 16 is in an open state, the lower opening of the automatic lifting blanking hopper 15 is inserted into the opening-closing device 22 of the drum plug board, so as to ensure that the materials completely enter the drum 17. The fifth inductive switch and the sixth inductive switch correspond to the contraction and extension positions of the drum control cylinder 23 respectively so as to detect whether the mechanism is in the telescopic position or not.
The rotary drum feeding equipment is in operation: 1) the proportioned materials are uniformly delivered to a storage bin 1 for storage, and a belt weighing and quantitative feeder 5 at an outlet at the bottom of the storage bin realizes intelligent quantitative feeding control of the raw materials in the modes of quantitative value setting, weighing detection, speed detection, flow calculation, flow control and the like; 2) the auxiliary material accurate metering conveyor 6 automatically calculates the required auxiliary material amount according to the set value of the belt weighing and quantitative feeding machine 5, and calculates the feeding rotating speed through the self mechanical structure to realize the formulated proportion consistent with the raw material; 3) the proportioned materials fall into a hopper at the upper end of an air locking rotary valve 8, and the proportioned materials are sent into a pneumatic conveying pipeline 9 through the air locking rotary valve 8; starting the positive pressure feeding fan 7 and blowing the material into the cyclone separator 11; 4) if the materials are to be conveyed into the intermediate storage bin 12, controlling the reversing device 10 to adjust the path of the pneumatic conveying pipeline 9 to the cyclone separator 11; the material-carrying airflow tangentially enters the cyclone separator 11 along a path to form rotary motion, and the airflow spirally enters the cyclone cylinder body downwards along the cylinder body; the material with high density is thrown to the wall of the cyclone separator under the action of inertial centrifugal force, and falls spirally along the wall of the cyclone separator 11 to flow out of a discharge hole at the bottom of the cyclone separator under the action of gravity and inertial force; the rotating airflow is contracted in the cylinder body and flows towards the center, and secondary vortex is formed upwards and flows out from the top of the cyclone separator 11 through the air guide pipe; 5) the material at the bottom discharge port falls into the intermediate storage bin 12, the opening and closing valve at the bottom of the intermediate storage bin 12 is in a closed state in the feeding stage, and the capacity of the bin is consistent with that of the rotary drum 17; when the belt weighing and quantitative feeding machine 5 reaches a set value, the belt weighing and quantitative feeding machine 5 and the auxiliary material accurate metering conveyor 6 are automatically stopped; the belt weighing and quantitative feeding machine 5 and the auxiliary material accurate metering conveyor 6 are arranged in the control system, and the air-locking rotary valve 8 is stopped after the time delay of several seconds, so that the materials in the air-locking rotary valve 8 are ensured to completely fall into the pneumatic conveying pipeline 9; 6) calculating the time required for the materials to be conveyed from the air locking rotary valve 8 to the cyclone separator 11 according to the length of the pneumatic conveying pipeline and the material conveying speed, and setting the delayed closing time of the feeding fan 7 in the control system according to the calculated time; when the feeding fan 7 is stopped in a delayed way, the materials in the pneumatic conveying pipeline 9 are completely conveyed to the intermediate storage bin 12; 7) the sensor of the intermediate storage bin 12 reads the weight data, and the feedback weight data is used for verifying the weighing accuracy of the front belt weighing and quantitative feeding machine 5 and the auxiliary material accurate metering conveyor 6. When weight deviation occurs, the weight deviation is adjusted in time; 8) similarly, when the weighing sensor of the middle storage bin 12-2 senses that the bin is empty, the system can automatically switch the pneumatic conveying pipeline 9 and the reversing device 10 to the path of the 12-2 sections of the middle storage bin, and start the feeding fan 7, the air locking rotary valve 8, the belt weighing and quantitative feeder 5 and the auxiliary material accurate metering conveyor 6; repeating the process until the material in the middle storage bin 12-2 is conveyed to a set weight; thus, the plurality of intermediate storage bins 12 are automatically charged after being reset by the system sensing weight. 9) And then if the discharging is finished after the 2# rotary drum 17 is dried, outputting a positioning signal after the inlet of the rotary drum is positioned and confirmed, and prompting an operator in a central control room to feed the 2# rotary drum 17.
When the 2# rotary drum 17 is charged: 1) a rotary drum control cylinder 23 in the rotary drum feeding opening and closing mechanism 16 acts to make the position be N2, namely the feeding hole is opened; 2) the lifting cylinder 21 in the automatic lifting blanking hopper 15 acts to make the position at M2, at the moment, the hopper descends, and the lower opening of the hopper is inserted into the feeding opening of the rotary drum; 3) the conveyor control cylinder 19 in the conveyor automatic opening and closing mechanism 14 corresponding to the # 2 rotary drum 17 is started, and the position is L2; thus, the passage of the feeding screw conveyor 13 to the No. 2 rotary drum 17 is realized; 4) opening a valve at the bottom of the intermediate storage bin 12, namely starting the feeding screw conveyor 13, and continuously feeding the materials to the No. 2 rotary drum 17; 5) when the weight sensing of the middle storage bin 12 is zero, the 2# rotary drum 17 is filled with materials; then, sequentially returning a conveyor control cylinder 19 in the conveyor automatic opening and closing mechanism 14, a lifting cylinder 21 in the automatic lifting blanking hopper 15 and a rotary drum control cylinder 23 in the rotary drum feeding opening and closing mechanism 16 to the positions L1, M1 and N1 respectively, and finishing the feeding process; 6) meanwhile, when the weight induction of the middle storage bin 12 is zero, the front-end feeding system is automatically started to automatically feed the middle storage bin 12. Thus, when the feeding time of the rotary drums in each row is staggered, the rotary drums can be fully fed in a very short time by means of efficient conveying of the feeding spiral conveyor 13; compared with the prior art, the trolley needs to be pushed to the full position by manpower repeatedly, so that the feeding time of the rotary drum is obviously reduced, and the utilization efficiency of the rotary drum is improved.
In addition, the invention also discloses a drum drying automatic feeding method of the recycled polyester spinning raw material, which comprises the following steps:
(S1) quantitative discharging: the proportioned materials are conveyed to a storage bin 1 for storage, a belt weighing and quantifying feeder 5 at the bottom outlet of the storage bin 1 quantitatively controls the materials in the modes of quantitative value setting, weighing detection, speed detection, flow calculation, flow control and the like, and the materials are conveyed into a pneumatic conveying pipeline 9 through an air locking rotary valve 8;
(S2) pipeline transportation: the positive pressure material blowing fan 7 conveys materials along a pneumatic conveying pipeline 9, and the switching materials with different paths adjusted by the reversing device 10 are blown into the cyclone separators 11 of the corresponding paths and then dropped into the intermediate storage bins 12 of the corresponding paths;
(S3) dosing: the control system adjusts the working conditions of the devices to make the intermediate storage bins 12 reach the set material weight;
(S4) drum feeding: the material inlet end of the rotary drum 17 at the corresponding station is communicated with the material outlet end of the feeding screw conveyor 13 under the control of the rotary drum material receiving control device, and the feeding screw conveyor 13 conveys the materials in the intermediate storage bin 12 to the rotary drum 17 along the communicated channel to complete the rotary drum drying and automatic feeding process of the regenerated polyester spinning raw material.
Claims (8)
1. An automatic feeding system for drum drying of recycled polyester spinning raw materials comprises a storage bin (1) and a drum (17), and is characterized by further comprising a positive-pressure material blowing fan (7), an air-locking rotary valve (8), a pneumatic conveying pipeline (9), a reversing device (10) and a cyclone separator (11); a belt weighing and quantitative feeding machine (5) is arranged at the outlet of the storage bin (1), the belt weighing and quantitative feeding machine (5) is connected with the air locking rotary valve (8), the belt weighing and quantitative feeding machine (5) is connected to the feeding end of the pneumatic conveying pipeline (9) through the air locking rotary valve (8), and the air inlet end of the pneumatic conveying pipeline (9) is connected with the positive-pressure material blowing fan (7); the pneumatic conveying pipeline (9) is connected with a plurality of reversing devices (10) in series, each reversing device (10) is connected with one cyclone separator (11), the input end of each cyclone separator (11) is connected with the pneumatic conveying pipeline (9) through the reversing device (10), the lower part of each cyclone separator (11) is provided with a middle storage bin (12), each middle storage bin (12) is provided with a weighing sensor, and the bottom of each middle storage bin (12) is provided with an opening and closing discharge gate valve; a feeding screw conveyor (13) is arranged below the opening and closing discharge gate valve, a plurality of rotary drum material receiving control devices are arranged on the feeding screw conveyor (13) in series, and each rotary drum material receiving control device is connected with one rotary drum (17).
2. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 1, characterized in that the system further comprises an auxiliary material accurate metering conveyor (6), the auxiliary material accurate metering conveyor (6) is arranged on one side of the belt weighing and quantitative feeding machine (5), and the auxiliary material accurate metering conveyor (6) is connected to a feeding port of the air-locking rotary valve (8).
3. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 1, characterized in that the belt weighing and constant feeding machine (5) comprises a constant feeding machine body, a driving device, a weighing device, a speed measuring device and an intelligent weighing control system.
4. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 1, characterized in that the drum material receiving control device comprises a conveyor automatic opening and closing mechanism (14), an automatic lifting blanking hopper (15) and a drum material feeding opening and closing mechanism (16); the automatic opening and closing mechanism (14) of the conveyor is positioned at the outlet of the feeding screw conveyor (13), and the feeding end of the automatic lifting blanking hopper (15) is positioned below the automatic opening and closing mechanism (14) of the conveyor; the discharge end of the automatic lifting blanking hopper (15) is positioned above the rotary drum feeding opening and closing mechanism (16), and the rotary drum feeding opening and closing mechanism (16) is positioned above the feeding hole of the rotary drum (17).
5. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 4, wherein the automatic conveyor opening and closing mechanism (14) comprises a conveyor plug board opening and closing device (18), a conveyor control cylinder (19), a conveyor cylinder plug board, a first inductive switch and a second inductive switch; the output end of the conveyor control cylinder (19) is connected with the conveyor cylinder plug board, and the conveyor cylinder plug board is connected with the discharge end of the conveyor plug board opening and closing device (18); the first inductive switch and the second inductive switch correspond to the contraction and extension positions of the conveyor control cylinder (19) respectively.
6. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 4, characterized in that the automatic lifting blanking hopper (15) comprises an automatic lifting device (20), a lifting cylinder (21), a third inductive switch and a fourth inductive switch; the output end of the lifting cylinder (21) is connected with the automatic lifting device (20); the diameter of the upper opening of the automatic lifting device (20) is larger than that of the outlet of the conveyor inserting plate opening and closing device (18); the third inductive switch and the fourth inductive switch respectively correspond to the extending and contracting positions of the lifting cylinder (21).
7. The automatic drum drying feeding system for the recycled polyester spinning raw materials as claimed in claim 4, characterized in that the drum feeding opening and closing mechanism (16) comprises a drum flashboard opening and closing device (22), a drum control cylinder (23), a drum flashboard, a fifth inductive switch and a sixth inductive switch; the output end of the rotary drum control cylinder (23) is connected with a rotary drum cylinder plug board, and the output end of the rotary drum cylinder plug board is connected with the discharge end of the rotary drum plug board opening and closing device (22); the diameter of the lower opening of the automatic lifting device (20) is smaller than that of the opening of the drum flashboard opening and closing device (22); the fifth inductive switch and the sixth inductive switch respectively correspond to the contraction and extension positions of the rotary drum control cylinder (23).
8. A drum drying automatic feeding method for a recycled polyester spinning raw material comprises the following steps:
(S1) quantitative discharging: the proportioned materials are conveyed to a storage bin (1) for storage, a belt weighing and quantifying feeder (5) at the bottom outlet of the storage bin (1) quantitatively controls the materials in the modes of quantitative value setting, weighing detection, speed detection, flow calculation, flow control and the like, and the materials are conveyed into a pneumatic conveying pipeline (9) through an air locking rotary valve (8);
(S2) pipeline transportation: the positive pressure material blowing fan (7) conveys materials along a pneumatic conveying pipeline (9), and the switching materials of different paths are adjusted by the reversing device (10) to be blown into the cyclone separators (11) of the corresponding paths and then to be dropped into the intermediate storage bins (12) of the corresponding paths;
(S3) dosing: the control system adjusts the working conditions of all the devices to enable the plurality of intermediate storage bins (12) to reach the set material weight;
(S4) drum feeding: the feeding end of the rotary drum (17) of the corresponding station is communicated with the discharging end of the feeding screw conveyor (13) under the control of the rotary drum material receiving control device, and the feeding screw conveyor (13) conveys the materials in the intermediate storage bin (12) to the rotary drum (17) along the communicated channel to complete the rotary drum drying automatic feeding process of the regenerated polyester spinning raw materials.
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Effective date of registration: 20220907 Address after: No.266 Binhai 2nd Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Applicant after: Ningbo Dafa New Material Co.,Ltd. Address before: 315300 Binhai 2nd Road, Hangzhou Bay New Area, Cixi Economic Development Zone, Ningbo City, Zhejiang Province Applicant before: NINGBO DAFA CHEMICAL FIBER Co.,Ltd. |
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