CN116944042B - Core material recovery method and core material recovery device - Google Patents
Core material recovery method and core material recovery device Download PDFInfo
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- CN116944042B CN116944042B CN202311207326.7A CN202311207326A CN116944042B CN 116944042 B CN116944042 B CN 116944042B CN 202311207326 A CN202311207326 A CN 202311207326A CN 116944042 B CN116944042 B CN 116944042B
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- 239000011162 core material Substances 0.000 title claims abstract description 111
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 224
- 238000000926 separation method Methods 0.000 claims abstract description 111
- 239000013067 intermediate product Substances 0.000 claims abstract description 79
- 239000002131 composite material Substances 0.000 claims abstract description 35
- 239000007771 core particle Substances 0.000 claims description 48
- 239000011246 composite particle Substances 0.000 claims description 39
- 239000011802 pulverized particle Substances 0.000 claims description 17
- 238000004064 recycling Methods 0.000 claims description 10
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 description 32
- 239000002270 dispersing agent Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 239000012467 final product Substances 0.000 description 5
- 240000007182 Ochroma pyramidale Species 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/04—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to the technical field of core material recovery, in particular to a core material recovery method and core material recovery equipment. The core material recovery method comprises the following steps: s1, crushing fan blades to form crushed particles within a preset particle size range, wherein the crushed particles comprise composite material particles and core material particles; s2, throwing the crushed particles downwards, and applying a primary separation air flow in a horizontal direction or in an inclined direction to the fallen crushed particles so as to enable first intermediate product particles formed by mixing the core material particles and part of the composite material particles to move forwards and separate from the crushed particles; and S3, applying at least one secondary separation air flow which is inclined upwards to the first intermediate product particles, so that the core material particles move forwards to be separated from the first intermediate product particles. The invention aims to solve the technical problems that: the core material is wasted by the waste of the fan blades.
Description
Technical Field
The invention relates to the technical field of core material recovery, in particular to a core material recovery method and core material recovery equipment.
Background
The fan blade comprises a composite material and a core material. The composite material further comprises glass fiber and resin, the core material further comprises bassal wood, PVC material and PET material, and the core material is light and high in price.
In recent years, early wind turbines successively reach the service life, and their fan blades are retired. However, since the early research on recycling of fan blades is less, a large number of fan blades are not fully recycled, and meanwhile, the existing research method fails to fully consider the difference between the core material and the composite material, and the core material cannot be singly used, so that the core material is wasted. In fact, the property difference between the core material and the composite material is large, so that the bonding between the core material and the composite material is low, so that it is feasible to recycle the core material.
Disclosure of Invention
The invention aims to solve the technical problems that: the core material is wasted by the waste of the fan blades.
In order to achieve the above object, an aspect of the present invention provides a core material recycling method, comprising the steps of: s1, crushing fan blades to form crushed particles within a preset particle size range, wherein the crushed particles comprise composite material particles and core material particles; s2, throwing the crushed particles downwards, and applying a primary separation air flow in a horizontal direction or in an inclined direction to the fallen crushed particles so that first intermediate product particles formed by mixing core material particles and part of composite material particles move forwards and are separated from the crushed particles; and S3, applying at least one secondary separation airflow which is inclined upwards to the first intermediate product particles, so that the core material particles move forwards to be separated from the first intermediate product particles.
In some embodiments, the primary separation gas stream flows in a horizontal direction at a flow rate in the range of 8m/s to 20m/s and at a temperature in the range of 60 ℃ to 120 ℃ and the size of the crushed particles is less than 4mm.
In some embodiments, the at least one secondary separated gas stream comprises a secondary separated gas stream, a tertiary separated gas stream, and a quaternary separated gas stream; and step S3 further comprises: applying an upward-inclined secondary separation gas flow to the first intermediate product particles to cause the second intermediate product particles, which are formed by mixing the core particles and a portion of the composite material particles, to move forward and disengage from the first intermediate product particles; applying a three-stage separation gas flow obliquely upward to the second intermediate product particles to move the third intermediate product particles, which are formed by mixing the core material particles and part of the composite material particles, forward to be separated from the second intermediate product particles; applying an upward-sloping four-stage separation gas flow to the third intermediate product particles, causing the core particles to move forward and disengage from the third intermediate product particles.
In some embodiments, the flow rate of the secondary separation gas stream ranges from 8m/s to 10m/s and the temperature of the secondary separation gas stream ranges from 20 ℃ to 30 ℃; the flow speed range of the tertiary separation air flow is 6m/s-8m/s, and the temperature range of the tertiary separation air flow is 20-30 ℃; the flow rate of the four-stage separation gas flow ranges from 5m/s to 6m/s, and the temperature of the four-stage separation gas flow ranges from 20 ℃ to 30 ℃.
In some embodiments, the range of angles between the flow direction of the secondary separation gas stream and the horizontal plane, the range of angles between the flow direction of the tertiary separation gas stream and the horizontal plane, and the range of angles between the flow direction of the quaternary separation gas stream and the horizontal plane are between 45 ° and 75 ° with respect to the horizontal plane.
The invention also provides core material recycling equipment, which comprises a box body, wherein the two ends of the box body in the length direction are respectively provided with a primary air supply device and a core material discharge hole, and the bottom end of an air outlet of the primary air supply device is higher than the top end of the core material discharge hole; the top of the box body is provided with a feeding port for feeding particles crushed by the fan blades; at least one secondary air supply device is arranged at the bottom of the box body along the direction from the primary air supply device to the core material discharge hole, and the air outlet of the secondary air supply device is inclined upwards; the top end of the air outlet of the secondary air supply device is lower than the bottom end of the air outlet of the primary air supply device; the first intermediate product particles formed by mixing core particles and part of composite material particles in the fan blade crushed particles move to a core material discharge port based on primary separation air flow conveyed by a primary air supply device and are separated from the fan blade crushed particles; based on the secondary separated air flow conveyed by the secondary air supply device, the core material particles in the first intermediate product particles continue to move towards the core material discharging hole to be separated from the first intermediate product particles.
In some embodiments, the number of secondary air-supplying devices is three, the three secondary air-supplying devices are respectively a secondary air-supplying device, a tertiary air-supplying device and a quaternary air-supplying device, and the secondary air-supplying device, the tertiary air-supplying device and the quaternary air-supplying device are sequentially arranged at intervals along the direction from the primary air-supplying device to the core material discharging hole.
In some embodiments, the spacing between the opposite ends of the primary air moving device and the secondary air moving device, the spacing between the opposite ends of the secondary air moving device and the tertiary air moving device, the spacing between the opposite ends of the tertiary air moving device and the quaternary air moving device, and the spacing between the quaternary air moving device and the opposite ends of the core material discharge opening decrease in sequence.
In some embodiments, a first discharge port, a second discharge port, a third discharge port and a fourth discharge port are arranged on the bottom wall of the box body; the first discharge port is located between the primary air supply device and the secondary air supply device, the second discharge port is located between the secondary air supply device and the tertiary air supply device, the third discharge port is located between the tertiary air supply device and the quaternary air supply device, and the fourth discharge port is located between the quaternary air supply device and the core material discharge port.
In some embodiments, a first baffle is arranged between the first discharge port and the secondary air supply device, a second baffle is arranged between the second discharge port and the tertiary air supply device, and a third baffle is arranged between the third discharge port and the quaternary air supply device; the top end of the first baffle plate, the top end of the second baffle plate and the top end of the third baffle plate are lower than the bottom end of the air outlet of the primary air supply device.
The technical scheme of the invention has the following beneficial effects:
applying a primary separation gas flow to the falling pulverized particles to move forward first intermediate product particles formed by mixing the core particles and part of the composite particles so as to be separated from the pulverized particles; and applying at least one upward-sloping secondary separation gas flow to the first intermediate product particles to continue the forward movement of the core particles to disengage from the first intermediate product particles. Therefore, the composite material particles with heavier mass in the crushed particles are separated gradually by applying multiple separation airflows, and the core material particles with light mass in the crushed particles can be separated, so that the recovery of the core material is realized, and the waste of the core material is avoided.
Drawings
FIG. 1 is a schematic flow chart of a method for recycling a core material according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a core recycling apparatus according to an embodiment of the present invention.
Description of the reference numerals
1. A case; 11. a core material discharge port; 12. a feed port; 13. a first discharge port; 14. a second discharge port; 15. a third discharge port; 16. a fourth discharge port; 17. a first baffle; 18. a second baffle; 19. a third baffle; 2. a primary air supply device; 3. a secondary air supply device; 31. a secondary air supply device; 32. three-stage air supply device; 33. four-stage air supply device.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the invention only and not limiting. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
As shown in fig. 1, the present invention provides a core material recycling method, which includes the steps of: s1, crushing fan blades to form crushed particles within a preset particle size range, wherein the crushed particles comprise composite material particles and core material particles; s2, throwing the crushed particles downwards, and applying a primary separation air flow in a horizontal direction or in an inclined direction to the fallen crushed particles so that first intermediate product particles formed by mixing core material particles and part of composite material particles move forwards and are separated from the crushed particles; and S3, applying at least one secondary separation airflow which is inclined upwards to the first intermediate product particles, so that the core material particles move forwards to be separated from the first intermediate product particles.
Specifically, in step S1, the fan blade may be pulverized into pulverized particles including composite particles and core particles using a pulverizing apparatus conventional in the art. As will be appreciated by those skilled in the art, in a fan blade, the core material is sandwiched between the composite materials, so that the core material and the composite materials are distributed independently of each other; and the property difference between the composite material and the core material is large, so that the composite material particles and the core material particles are only mixed together, not fused with each other, so that the composite material particles and the core material particles can be separated by physical means. Of course the particle size of the crushed particles cannot exceed a predetermined particle size, for example the particle size of the crushed particles is less than 4mm. Of course, the size of the crushed particles may be made smaller, for example less than 1.25mm, and the invention is not limited. It should be noted that, the value of the preset particle size is related to the wind speeds of the primary separation air flow and the secondary separation air flow in the subsequent step, and the preset particle size needs to fully consider the wind speeds of the primary separation air flow and the secondary separation air flow so as to enable the core particles to be separated smoothly.
Specifically, in step S2, after the pulverized particles are thrown downward, the pulverized particles freely fall. And applying a primary separation gas stream blown forward to the free falling comminuted particles, the primary separation gas stream being capable of moving the lighter mass of the core particles and a portion of the smaller mass of the composite particles forward to disengage from the primary comminuted particles, and the core particles and the portion of the composite particles comprising the first intermediate product particles. While another portion of the larger mass of composite particles is less affected by the primary separation gas stream, the composite particles undergo only a small amount of forward movement and continue to fall and break away from the original crushed particles. After step S2 is completed, a part of the composite particles having a larger mass have been detached from the raw pulverized particles, and first intermediate product particles are separated from the raw pulverized particles, the first intermediate product particles having a higher content of core particles.
Specifically, in step S2, the first intermediate product particles are allowed to move forward by the primary separation gas stream. But the first intermediate product particles will continue to fall under the force of gravity. At this point a secondary separation gas flow is applied to the first intermediate product particles in an upward incline, which can apply an upward incline force to the first intermediate product particles. However, since the core particles are light in weight, the falling speed of the core particles is slowed down by the secondary separation air flow, and the core particles continue to move forward. However, the mass of the composite particles is relatively large, so that at least a portion of the composite particles in the first intermediate product particles are less affected by the secondary separation gas stream, the composite particles undergo a small amount of forward movement, and the composite particles continue to fall off the first intermediate product particles. After step S2 is completed, at least a majority of the composite particles are separated from the original crushed particles, and the core particles are separated from the original crushed particles.
In this embodiment, a primary separation gas flow is applied to the falling pulverized particles, so that first intermediate product particles, which are formed by mixing core particles and part of the composite particles, are moved forward to be detached from the pulverized particles; and applying at least one upward-sloping secondary separation gas flow to the first intermediate product particles to continue the forward movement of the core particles to disengage from the first intermediate product particles. Therefore, the composite material particles with heavier mass in the crushed particles are separated gradually by applying multiple separation airflows, and the core material particles with light mass in the crushed particles can be separated, so that the recovery of the core material is realized, and the waste of the core material is avoided.
It should be noted that, although a small amount of composite particles may be contained in the core particles obtained by the present invention, most of the core particles have been separated and most of the composite particles have been removed, so that it can be considered that the core particles have been effectively recovered, and it is still of positive significance to avoid waste of core resources.
In some embodiments of the invention, the primary separation gas stream flows in a horizontal direction at a flow rate in the range of 8m/s to 20m/s and at a temperature in the range of 60 ℃ to 120 ℃ and the size of the crushed particles is less than 4mm.
Specifically, when the particle size of the crushed particles exceeds 4mm, the falling speed of the crushed particles is high, which is unfavorable for separation by the separation air flow. The flow rate of the primary separation air flow is less than 8m/s, so that the wind power is insufficient; if the primary separation air flow is larger than 20m/s, the wind power is too large, and the separation efficiency of core particles is reduced. The core particles contain a certain amount of balsa wood material, and the balsa wood is wood. In the long-term use process of the fan blade, a small amount of water can be absorbed in the balsa wood, so that the mass of the balsa wood is increased, the mass of the core material particles is increased, and the separation of the core material particles is not facilitated. The temperature of the primary separation air flow is controlled within the range of 60-120 ℃, so that on one hand, the moisture in the bassartan can be quickly dried, and on the other hand, the deterioration of core material particles due to overhigh temperature is avoided.
In this embodiment, when the primary separation airflow is applied to the crushed particles, the airflow with a certain temperature can quickly dry a small amount of moisture in the core material, so that the quality of the core material particles is lighter, and the core material particles are easy to move forward under the action of the primary separation airflow, which is helpful for the core material particles to be separated from the crushed particles smoothly and for the recovery of the core material.
In some embodiments of the invention, the at least one secondary separated gas stream comprises a secondary separated gas stream, a tertiary separated gas stream, and a quaternary separated gas stream. And step S3 further comprises: applying an upward-inclined secondary separation gas flow to the first intermediate product particles to cause the second intermediate product particles, which are formed by mixing the core particles and a portion of the composite material particles, to move forward and disengage from the first intermediate product particles; applying a three-stage separation gas flow obliquely upward to the second intermediate product particles to move the third intermediate product particles, which are formed by mixing the core material particles and part of the composite material particles, forward to be separated from the second intermediate product particles; applying an upward-sloping four-stage separation gas flow to the third intermediate product particles, causing the core particles to move forward and disengage from the third intermediate product particles.
In particular, the first intermediate product particles are able to move forward by the primary separation gas stream. But the first intermediate product particles will continue to fall under the force of gravity. At this point, an obliquely upward secondary separation gas flow is applied to the first intermediate product particles, which secondary separation gas flow is capable of applying an obliquely upward force to the first intermediate product particles. The secondary separation gas stream is capable of moving the lighter mass of the core particles and a portion of the smaller mass of the composite particles in the first intermediate particles forward and out of the first intermediate particles, and the core particles and the portion of the composite particles comprise the second intermediate particles. But the mass of another part of the composite particles in the first intermediate product particles is larger, so that these composite particles are less affected by the secondary separation gas flow, these composite particles will undergo a small amount of forward movement, and these composite particles will continue to fall down and fall out of the first intermediate product particles.
Similarly, the tertiary separation gas stream is capable of moving the lighter weight core particles and a portion of the smaller weight composite particles of the second intermediate product particles forward and away from the second intermediate product particles, and the core particles and the portion of the composite particles comprise the third intermediate product particles; while another portion of the composite particles in the second intermediate particles will continue to fall and break away from the second intermediate particles due to the larger mass.
Similarly, the four-stage separation gas stream is capable of moving lightweight core particles of the third intermediate product particles forward and separating from the third intermediate product particles; while another portion of the composite particles in the third intermediate product particles, due to the greater mass, continue to fall and become dislodged from the third intermediate product particles.
In this embodiment, the composite particles in the crushed particles are further separated by the treatment of the secondary separation gas stream, the tertiary separation gas stream and the quaternary separation gas stream, while the core particles are gradually separated, and the product obtained by the treatment of the quaternary separation gas stream is the final product particles.
In some embodiments of the invention, the wind speed range of the secondary separation gas stream is 8m/s-10m/s, and the temperature range of the secondary separation gas stream is 20-30 ℃; the wind speed range of the tertiary separation air flow is 6m/s-8m/s, and the temperature range of the tertiary separation air flow is 20-30 ℃; the wind speed range of the four-stage separation airflow is 5m/s-6m/s, and the temperature range of the four-stage separation airflow is 20-30 ℃.
Specifically, the secondary separation airflow, the tertiary separation airflow and the quaternary separation airflow are normal-temperature airflows, and the core material particles are not required to be heated and dried, so that the deterioration of the core material particles is avoided. In addition, by the primary separation gas flow, a part of the composite particles with the heaviest mass in the crushed particles are separated, and the mass of the rest particles in the crushed particles is relatively light, so that the flow rate of the secondary separation gas flow is not excessively high, and the situation that the rest composite particles are difficult to separate is avoided. Therefore, the secondary separation gas flow, the tertiary separation gas flow and the quaternary separation gas flow are controlled within the above parameter ranges, so that the rest of the composite material can be gradually separated from the core material particles in the order of weight to light weight, and further, the core material particles are gradually separated.
In some embodiments of the invention, the range of angles between the flow direction of the secondary separation gas stream and the horizontal plane, the range of angles between the flow direction of the tertiary separation gas stream and the horizontal plane, and the range of angles between the flow direction of the quaternary separation gas stream and the horizontal plane are between 45 ° and 75 ° based on the horizontal plane.
In particular, the primary separation gas flow is gradually attenuated as the pulverized particles move forward, since the velocity of the primary separation gas flow is not too high (avoiding the composite particles from escaping). The secondary separation gas applies a forward and upward force to the first intermediate product particles, slowing down the drop of the core particles while providing assistance to the continued forward movement of the core particles. Similarly, the tertiary separation gas applies a forward and upward force to the second intermediate product particles, slowing down the drop of the core particles while providing assistance to the continued forward movement of the core particles. Similarly, the flow of the fourth stage separation gas to the third intermediate product particles applies a forward and upward force, slowing down the drop of the core particles while providing assistance to the continued forward movement of the core particles. Setting the included angle in the range of 45 ° to 75 ° helps to slow down the drop of the core particles and helps the core particles to continue to move forward.
In some embodiments, the angle between the flow direction of the secondary separation gas stream and the horizontal plane, the angle between the flow direction of the tertiary separation gas stream and the horizontal plane, and the angle between the flow direction of the quaternary separation gas stream and the horizontal plane are sequentially reduced to facilitate separation of the core particles.
In some embodiments of the present invention, after pulverizing the fan blade, the dispersant powder is added to the pulverized particles, and the pulverized particles and the dispersant powder are sufficiently stirred for more than 2 hours. The dispersing agent can avoid bonding among various particles in the crushed particles, and is helpful for separating core particles. The dispersing agent can be sodium oxalate or sodium pyrophosphate. In addition, after the dispersant is mixed into the pulverized particles to form a mixture, the mass of the dispersant is 0.05% to 0.5% of the mass of the mixture.
In some embodiments of the invention, the product particles obtained after treatment of the four-stage separation gas stream are the final product particles. The final product particles comprise mainly core particles, possibly also small amounts of composite particles. The final product particles are washed in purified water to remove impurities such as dust. After the washing is completed, the final product particles are dried.
As shown in fig. 2, the invention further provides a core material recycling device, which comprises a box body 1, wherein a primary air supply device 2 and a core material discharge port 11 are respectively arranged at two ends of the box body 1 in the length direction, and the bottom end of an air outlet of the primary air supply device 2 is higher than the top end of the core material discharge port 11; the top of the box body 1 is provided with a feeding port 12 for feeding particles crushed by the fan blades; at least one secondary air supply device 3 is arranged at the bottom in the box body 1 along the direction from the primary air supply device 2 to the core material discharge hole 11, and the air outlet of the secondary air supply device 3 is inclined upwards; and the top end of the air outlet of the secondary air supply device 3 is lower than the bottom end of the air outlet of the primary air supply device 2. Wherein, based on the primary separation air flow conveyed by the primary air supply device 2, the first intermediate product particles formed by mixing the core particles and part of the composite material particles in the fan blade crushed particles move to the core material discharge port 11 and are separated from the fan blade crushed particles; based on the secondary separated air flow delivered by the secondary air supply device 3, the core particles in the first intermediate product particles continue to move toward the core discharge port 11 and are separated from the first intermediate product particles.
Specifically, the primary air supply device 2 is capable of applying a primary separated air flow flowing in a horizontal direction, the flow rate of the primary separated air flow ranges from 8m/s to 20m/s, and the temperature of the primary separated air flow ranges from 60 ℃ to 120 ℃. In addition, the particle size range of the crushed particles of the fan blade is within 4mm to match the parameters of the primary separation air flow applied by the primary air supply device 2.
In this embodiment, the primary air supply device 2 is capable of delivering a primary separation air flow, so that the first intermediate product particles formed by mixing the core particles and part of the composite particles in the fan blade pulverized particles move to the core material discharge port 11 so as to be separated from the fan blade pulverized particles, but the rest of the composite particles in the fan blade pulverized particles continue to fall; the secondary air supply 3 is capable of delivering a secondary separated air flow such that the core particles continue to move towards the core discharge opening 11 to disengage from the first intermediate product particles, but at least part of the composite particles in the first intermediate product particles continue to fall. Therefore, the separation air flows applied by the primary air supply device 2 and the secondary air supply device 3 enable the composite material particles with heavier mass in the fan blade crushed particles to be separated gradually, and enable the core material particles with lighter mass in the fan blade crushed particles to be separated, so that the recovery of the core material is realized, and the waste of the core material is avoided.
In some embodiments of the present invention, the number of the secondary air blowing devices 3 is three, the three secondary air blowing devices 3 are respectively a secondary air blowing device 31, a tertiary air blowing device 32 and a quaternary air blowing device 33, and the secondary air blowing devices 31, the tertiary air blowing devices 32 and the quaternary air blowing devices 33 are sequentially arranged at intervals in the direction from the primary air blowing device 2 to the core material discharge port 11.
Specifically, referring to the content of the above embodiment, the secondary air blower 31 is capable of delivering a secondary separated air flow having a flow rate range of 8m/s to 10m/s and a temperature range of 20 ℃ to 30 ℃. The tertiary air supply device 32 is capable of delivering a tertiary separated air flow having a flow rate in the range of 6m/s to 8m/s and a temperature of 20-30 ℃. The four-stage air blower 33 is capable of delivering a four-stage separated air stream having a flow rate in the range of 5m/s to 6m/s and a temperature of 20 ℃ to 30 ℃. And the included angle range between the flowing direction of the secondary separation air flow and the horizontal plane, the included angle range between the flowing direction of the tertiary separation air flow and the horizontal plane and the included angle range between the flowing direction of the quaternary separation air flow and the horizontal plane are between 45 degrees and 75 degrees. By the treatment of the secondary air blowing device 31, the tertiary air blowing device 32 and the quaternary air blowing device 33, the composite material particles in the crushed particles of the fan blades are further separated, and the core particles are gradually separated.
In some embodiments of the present invention, the spacing between the opposite ends of the primary air-moving device 2 and the secondary air-moving device 31, the spacing between the opposite ends of the secondary air-moving device 31 and the tertiary air-moving device 32, the spacing between the opposite ends of the tertiary air-moving device 32 and the quaternary air-moving device 33, and the spacing between the quaternary air-moving device 33 and the opposite ends of the core material discharge opening 11 decrease in sequence.
Specifically, the distance between the end of the primary air blowing device 2 facing the secondary air blowing device 31 and the end of the secondary air blowing device 31 facing the primary air blowing device 2, the distance between the end of the secondary air blowing device 31 facing the tertiary air blowing device 32 and the end of the tertiary air blowing device 32 facing the secondary air blowing device 31, the distance between the end of the tertiary air blowing device 32 facing the quaternary air blowing device 33 and the end of the quaternary air blowing device 33 facing the tertiary air blowing device 32, and the distance between the end of the quaternary air blowing device 33 facing the core material discharge port 11 and the end of the core material discharge port 11 facing the quaternary air blowing device 33 decrease in sequence.
In the present embodiment, as the fan blade pulverizes the particles, the average mass of the particles in the first, second and third intermediate particles gradually decreases, so the air flow rates of the primary air blowing device 2, the secondary air blowing device 31, the tertiary air blowing device 32 and the quaternary air blowing device 33 also gradually decrease to smoothly separate the composite particles. And after the airflow speed is reduced, the acting force on the core material particles is also reduced, so that the kinetic energy of forward movement of the core material particles is reduced. Therefore, the separation air flows of the secondary air supply device 31, the tertiary air supply device 32 and the quaternary air supply device 33 timely separate the crushed particles by sequentially reducing the intervals, so that the composite material particles in the crushed particles are further separated.
In some embodiments of the invention, a first discharge port 13, a second discharge port 14, a third discharge port 15 and a fourth discharge port 16 are arranged on the bottom wall of the box body 1; the first discharge port 13 is located between the primary air supply device 2 and the secondary air supply device 31, the second discharge port 14 is located between the secondary air supply device 31 and the tertiary air supply device 32, the third discharge port 15 is located between the tertiary air supply device 32 and the quaternary air supply device 33, and the fourth discharge port 16 is located between the quaternary air supply device 33 and the core material discharge port 11.
Specifically, after the primary air supply device 2 is processed, a part of composite material particles fall into the first discharge port 13; after the treatment of the secondary air supply device 31, a part of the composite material particles fall into the second discharge port 14; after the treatment of the three-stage air supply device 32, a part of the composite material particles fall into the third discharge port 15; after the treatment by the four-stage air blowing device 33, a part of the composite particles falls down into the fourth discharge port 16.
In some embodiments of the present invention, a first baffle 17 is disposed between the first outlet 13 and the secondary air supply device 31, a second baffle 18 is disposed between the second outlet 14 and the tertiary air supply device 32, and a third baffle 19 is disposed between the third outlet 15 and the quaternary air supply device 33. The top ends of the first baffle 17, the second baffle 18 and the third baffle 19 are lower than the bottom ends of the air outlets of the primary air blowing device 2.
Specifically, the first baffle 17 is configured to block movement of the composite particles (falling toward the first discharge port 13) toward the secondary air supply device 31; the second baffle 18 is used for blocking the movement of the composite particles (falling to the second discharge port 14) to the tertiary air supply device 32; the third baffle 19 serves to block the movement of the composite particles (falling toward the third discharge port 15) toward the four-stage blower 33.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely a preferred embodiment of the invention, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and that, for a person skilled in the art, modifications, adaptations or variations may be made without departing from the principles of the present invention, and the above technical features may be combined in any suitable manner; such modifications, variations and combinations, or direct application of the concepts and aspects of the invention in other applications without modification, are contemplated as falling within the scope of the invention.
Claims (6)
1. The core material recycling equipment is characterized by comprising a box body (1), wherein a primary air supply device (2) and a core material discharge hole (11) are respectively arranged at two ends of the box body (1) in the length direction, and the bottom end of an air outlet of the primary air supply device (2) is higher than the top end of the core material discharge hole (11); the top of the box body (1) is provided with a feeding port (12) for feeding particles crushed by the fan blades; at least one secondary air supply device (3) is arranged at the bottom in the box body (1) along the direction from the primary air supply device (2) to the core material discharge hole (11), and the air outlet of the secondary air supply device (3) is inclined upwards; the top end of the air outlet of the secondary air supply device (3) is lower than the bottom end of the air outlet of the primary air supply device (2);
wherein, based on the primary separation air flow conveyed by the primary air supply device (2), the first intermediate product particles formed by mixing core particles and part of composite material particles in the fan blade crushed particles move to the core material discharge port (11) and are separated from the fan blade crushed particles; based on the secondary separated air flow conveyed by the secondary air supply device (3), the core material particles in the first intermediate product particles continue to move towards the core material discharge hole (11) to be separated from the first intermediate product particles;
the number of the secondary air supply devices (3) is three, the three secondary air supply devices (3) are respectively a secondary air supply device (31), a tertiary air supply device (32) and a quaternary air supply device (33), and the secondary air supply devices (31), the tertiary air supply device (32) and the quaternary air supply device (33) are sequentially arranged at intervals along the direction from the primary air supply device (2) to the core material discharge hole (11);
the space between the opposite ends of the primary air supply device (2) and the secondary air supply device (31), the space between the opposite ends of the secondary air supply device (31) and the tertiary air supply device (32), the space between the opposite ends of the tertiary air supply device (32) and the quaternary air supply device (33) and the space between the quaternary air supply device (33) and the opposite ends of the core material discharge hole (11) are sequentially reduced;
the bottom wall of the box body (1) is provided with a first discharge hole (13), a second discharge hole (14), a third discharge hole (15) and a fourth discharge hole (16); the first discharge port (13) is located between the primary air supply device (2) and the secondary air supply device (31), the second discharge port (14) is located between the secondary air supply device (31) and the tertiary air supply device (32), the third discharge port (15) is located between the tertiary air supply device (32) and the fourth air supply device (33), and the fourth discharge port (16) is located between the fourth air supply device (33) and the core material discharge port (11);
a first baffle (17) is arranged between the first discharge hole (13) and the second-stage air supply device (31), a second baffle (18) is arranged between the second discharge hole (14) and the third-stage air supply device (32), and a third baffle (19) is arranged between the third discharge hole (15) and the fourth-stage air supply device (33); the top ends of the first baffle plate (17), the second baffle plate (18) and the third baffle plate (19) are lower than the bottom ends of the air outlets of the primary air supply device (2).
2. A core material recovery method, characterized in that the core material recovery method employs the core material recovery apparatus according to claim 1, and comprises the steps of:
s1, crushing fan blades to form crushed particles within a preset particle size range, wherein the crushed particles comprise composite material particles and core material particles;
s2, throwing the crushed particles downwards, and applying a primary separation air flow in a horizontal direction or in an inclined direction to the fallen crushed particles so as to enable first intermediate product particles formed by mixing the core material particles and part of the composite material particles to move forwards and separate from the crushed particles; and
s3, applying at least one secondary separation airflow which is inclined upwards to the first intermediate product particles, so that the core material particles move forwards to be separated from the first intermediate product particles.
3. The method for recycling a core material according to claim 2, wherein the primary separated air flow flows in a horizontal direction, a flow rate of the primary separated air flow ranges from 8m/s to 20m/s, a temperature of the primary separated air flow ranges from 60 ℃ to 120 ℃, and a particle size of the pulverized particles is less than 4mm.
4. A core material recovery method according to claim 3, wherein at least one of the secondary separated gas streams comprises a secondary separated gas stream, a tertiary separated gas stream, and a quaternary separated gas stream;
and said step S3 further comprises:
applying an upward-sloping secondary separation gas stream to the first intermediate product particles to move forward second intermediate product particles, which are mixed from the core particles and a portion of the composite particles, away from the first intermediate product particles;
applying a three stage separation gas flow obliquely upward to the second intermediate product particles to move forward third intermediate product particles mixed from the core material particles and a portion of the composite material particles to disengage from the second intermediate product particles;
applying an upward-sloping four-stage separation gas flow to the third intermediate product particles, causing the core particles to move forward and disengage from the third intermediate product particles.
5. The method for recycling a core material according to claim 4, wherein a flow rate of the secondary separation gas stream ranges from 8m/s to 10m/s, and a temperature of the secondary separation gas stream ranges from 20 ℃ to 30 ℃;
the flow speed range of the three-stage separation gas flow is 6m/s-8m/s, and the temperature range of the three-stage separation gas flow is 20-30 ℃;
the flow rate range of the four-stage separation gas flow is 5m/s-6m/s, and the temperature range of the four-stage separation gas flow is 20-30 ℃.
6. The method according to claim 4, wherein an included angle range between a flow direction of the secondary separation gas flow and a horizontal plane, an included angle range between a flow direction of the tertiary separation gas flow and a horizontal plane, and an included angle range between a flow direction of the quaternary separation gas flow and a horizontal plane are 45 ° to 75 ° with reference to a horizontal plane.
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| CN116944042A (en) | 2023-10-27 |
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