Particle classification device and classification method for thermal insulation material production

Abstract

The present invention provides a particle grading device and grading method for the production of thermal insulation materials, which belongs to the technical field of particle grading and screening, and includes a shell with a feeding port and a screening unit, a driving unit and a correction unit arranged in the shell; the screening unit has a partition and a sieve plate, and the plate surface of the sieve plate is provided with a plurality of screening areas evenly distributed along its axis, the sieve hole aperture of the screening area increases successively along the circumference of the sieve plate, and the sieve hole aperture of the same screening area is the same, the screening areas with the smallest aperture and the largest aperture are respectively the starting area and the end area, the partition is perpendicular to the sieve plate and is located on the top of the sieve plate, the starting area and the end area are distributed on opposite sides of the partition, the driving unit is used to drive the material to move from the starting area to the end area, and the correction unit is used to check whether the material meets the requirements. The present invention improves the uniformity of particle grading and screening.

Description

Technical Field

[0001] The invention belongs to the technical field of particle classification and screening, and specifically relates to a particle classification device and a classification method for producing thermal insulation materials. Background Art

[0002] With the rapid development of the construction industry and the continuous improvement of energy-saving standards, the demand for insulation materials is increasing, and the requirements for their performance are becoming increasingly stringent. The performance of insulation materials depends to a large extent on the uniformity and size distribution of their raw material particles.

[0003] The existing screening device has an inclined sieve plate, which is divided into multiple screening areas from top to bottom. The sieve holes in different screening areas have different sizes, and the sieve holes increase in size from the top to the bottom of the sieve plate. In the process of the particles to be screened sliding from the top of the sieve plate to the bottom of the sieve plate, the particles whose diameter meets the requirements of the current screening area will pass through the sieve holes, and the particles whose diameter does not meet the current screening requirements will slide into the next screening area.

[0004] The particles to be screened will roll faster and faster as they slide along the sieve plate. Due to their own fast rolling speed or the particles not being aligned with the sieve holes, the particles will not fall into the sieve holes with the same diameter as themselves and will slide into the subsequent screening area, causing some particles to fall into sieve holes with larger diameters than themselves, thus resulting in the defect of poor uniformity in particle grading. Summary of the invention

[0005] The embodiments of the present invention provide a particle grading device and a grading method for producing thermal insulation materials, aiming to solve the technical problem of poor uniformity in particle grading.

[0006] In the first aspect, an embodiment of the present invention provides a particle grading device for the production of thermal insulation materials, comprising a shell with a feeding port and a screening unit, a driving unit and a correction unit arranged in the shell; the screening unit has a partition and a sieve plate both fixed to the inner side wall of the shell, and a plurality of screening areas evenly distributed along its axis are provided on the plate surface of the sieve plate, the sieve hole diameters of the screening areas increase successively along the circumference of the sieve plate, and the sieve hole diameters of the same screening area are the same, the screening areas with the smallest and largest apertures are respectively a starting area and an end area, the partition is perpendicular to the sieve plate and is located on the top of the sieve plate, the starting area and the end area are distributed on opposite sides of the partition, the driving unit is used to drive the material to move from the starting area to the end area, the correction unit is arranged below the sieve plate, and has a verification area corresponding to the screening area one by one, and the verification area is used to check whether the material falling from the corresponding screening area meets the sieve hole diameter of the screening area.

[0007] In combination with the first aspect, in a possible implementation, a gap is left between the bottom wall of the partition plate and the upper surface of the screen plate, and an opening and closing unit is provided in the gap;

[0008] The driving unit comprises:

[0009] A driving motor is mounted on the housing;

[0010] A hanging column is drivingly connected to the output shaft of the driving motor, and the hanging column is located above the sieve plate and is coaxial with the sieve plate;

[0011] A power plate, one side of which is fixed to the suspension column, and the side away from the suspension column is in contact with the inner wall of the shell, and the bottom wall of the power plate is in contact with the upper surface of the screen plate;

[0012] Wherein, when the power plate needs to pass through the gap, the opening and closing unit opens the gap, and after the power plate passes through the gap, the opening and closing unit closes the gap.

[0013] In combination with the first aspect, in a possible implementation, a through groove aligned with the gap is formed through the upper surface of the sieve plate;

[0014] The opening and closing unit comprises:

[0015] A shift plate is slidably adapted in the through slot and has an inclined surface for the power plate to be pressed;

[0016] An elastic part, arranged between the baffle plate and the screen plate, having a pre-tightening force for allowing the baffle plate to move upward;

[0017] Among them, the shift plate moves downward after being squeezed by the power plate until its top surface is flush with the upper surface of the screen plate. When the power plate passes through the gap, the elastic part drives the shift plate to move upward until it abuts against the bottom wall of the partition.

[0018] In combination with the first aspect, in a possible implementation, it also includes a transverse pushing unit, which is arranged on the side of the power plate facing the end area, and the transverse pushing unit includes two transverse pushing plates distributed radially at intervals along the screen plate and a telescopic part for adjusting the distance between the two transverse pushing plates.

[0019] In combination with the first aspect, in a possible implementation, a horizontally arranged adjustment groove is opened on a side of the power plate facing the transverse pushing unit, the adjustment groove is a square groove, and the telescopic part is arranged in the adjustment groove;

[0020] The telescopic part includes an adjusting block, an adjusting screw and an adjusting motor. The adjusting block corresponds to the horizontal push plate one by one. The adjusting block is square and slidably fits in the adjusting groove. The adjusting screw rotates around its own central axis and is connected in the adjusting groove. Both ends of the adjusting screw are provided with threads with different rotation directions. The two ends of the adjusting screw respectively pass through the two adjusting blocks and the adjusting screw is threadably fit in the adjusting block. The two adjusting blocks are respectively arranged on the two sections of the threads of the adjusting screw. The adjusting motor is fixedly installed in the adjusting groove, and the output shaft end of the adjusting motor is fixed to one end of the adjusting screw.

[0021] In combination with the first aspect, in a possible implementation manner, the correction unit further includes a correction part corresponding to each of the verification areas one by one;

[0022] The correction unit comprises:

[0023] A launching tube is arranged in the verification area, and the launching tube has a launching port;

[0024] A blowing device, connected to the launching port and used to blow air into the launching tube so that the material is ejected from the launching port;

[0025] A plurality of material receiving pipes are arranged at intervals along the axial direction of the launching port and are used to receive materials of different diameters.

[0026] In combination with the first aspect, in a possible implementation, one of the material receiving pipes leads to a material storage area for storing graded materials, and the other material receiving pipes lead to a screening area for storing pre-graded materials.

[0027] In combination with the first aspect, in a possible implementation, it further includes a diversion unit disposed between the screening unit and the correction unit, the diversion unit having temporary storage boxes corresponding to the verification areas one by one;

[0028] The temporary storage box has a receiving port for receiving materials dropped from the corresponding screening area and a discharge port for the materials to flow out, and a valve that is intermittently opened is provided at the discharge port.

[0029] In combination with the first aspect, in a possible implementation, the diversion unit further includes a diversion tube disposed between the temporary storage box and the verification area, and the diameter of the diversion tube near the temporary storage box is larger than the diameter of the diversion tube near the verification area.

[0030] In a second aspect, an embodiment of the present invention further provides a particle classification method for producing thermal insulation materials, the steps of which are as follows:

[0031] S1, the material to be classified is introduced into the starting area from the feeding port, and the driving unit is started to drive the material from the starting area to the end area, and the material falls from the screening area to the verification area during the movement;

[0032] S2. The materials dropped from the screening area are judged in the corresponding verification area whether they meet the corresponding sieve hole diameter of the screening area. The materials that meet the corresponding sieve hole diameter of the screening area are sent to the storage area, and the materials that do not meet the corresponding sieve hole diameter of the screening area are sent to the to-be-classified area.

[0033] Compared with the prior art, the present invention:

[0034] 1. When the material moves from the starting area to the end area, most of the material moves to the screening area that matches its own diameter and passes through the screening area to enter the verification area. A small part of the material misses the screening area that matches its own diameter and passes through the sieve hole that is larger than its own diameter. When the material enters the verification area, it will be verified whether it matches the aperture of the sieve hole in the corresponding screening area. The verification area will select the non-compliant materials.

[0035] 2. The screen plate is set horizontally, and the kinetic energy of the material is provided by the driving unit. The material will not roll faster and faster due to its own gravity, reducing the possibility of the material missing the screening area that matches its own diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a particle classification device for producing thermal insulation materials according to an embodiment of the present invention;

[0037] Figure 2 This is a partial schematic diagram of the structure inside the housing according to an embodiment of the present invention;

[0038] Figure 3 This is a cross-sectional view of an embodiment of the present invention showing the movement of two horizontal thrust plates.

[0039] Description of reference numerals:

[0040] 10. Shell; 101. Feeding port; 102. Verification area;

[0041] 20, screening unit; 201, partition; 202, sieve plate; 2021, screening area; 2022, starting area; 2023, end area; 2024, through slot;

[0042] 30. driving unit; 301. suspension column; 302. driving motor; 303. power plate; 3031. adjusting slot; 3032. guide surface;

[0043] 40. Calibration unit; 401. Air blowing device; 402. Launch tube; 403. Material receiving pipe;

[0044] 50, opening and closing unit; 501, shift plate; 502, reset plate; 503, reset member; 504, guide rod;

[0045] 60, horizontal thrust unit; 601, horizontal thrust plate; 602, adjustment block; 603, adjustment screw; 604, adjustment motor;

[0046] 70. Diversion unit; 701. Temporary storage box; 702. Diversion cylinder. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] Please also read Figures 1 to 3 , the particle grading device for producing thermal insulation materials of the present invention is described. A particle grading device for producing thermal insulation materials, comprising a shell 10 with a feeding port 101, and a screening unit 20, a driving unit 30 and a correction unit 40 arranged in the shell 10; the screening unit 20 has a partition 201 and a sieve plate 202 both fixed to the inner wall of the shell 10, and a plurality of screening areas 2021 uniformly distributed along its axis are arranged on the plate surface of the sieve plate 202, and the sieve hole diameters of the screening areas 2021 increase successively along the circumference of the sieve plate 202, and the sieve hole diameters of the same screening area 2021 are the same, and the screening areas 2021 with the smallest and largest apertures are respectively The starting area 2022 and the end area 2023, the partition 201 is perpendicular to the screen plate 202 and is located on the top of the screen plate 202, the starting area 2022 and the end area 2023 are distributed on the opposite sides of the partition 201, the driving unit 30 is used to drive the material from the starting area 2022 to the end area 2023, the correction unit 40 is arranged under the screen plate 202, and has a verification area 102 corresponding to the screening area 2021 one by one, the verification area 102 is used to check whether the material falling from the corresponding screening area 2021 meets the sieve hole aperture of the screening area 2021.

[0049] Compared with the prior art, this embodiment provides:

[0050] In the process of material moving from the starting area 2022 to the end area 2023, most of the material moves to the screening area 2021 that matches its own diameter and passes through the screening area 2021 to enter the verification area 102. A small part of the material misses the screening area 2021 that matches its own diameter and passes through the sieve hole larger than its own diameter; the material enters the verification area 102 and is verified to see whether it matches the aperture of the sieve hole in the corresponding screening area 2021. The verification area 102 will select the non-compliant materials.

[0051] The screen plate 202 is arranged horizontally, and the kinetic energy of the material is provided by the driving unit 30. The material will not roll faster and faster due to its own gravity, thereby reducing the possibility that the material misses the screening area 2021 that matches its own diameter.

[0052] In some embodiments, see Figure 1 and Figure 2 A gap is left between the bottom wall of the partition plate 201 and the upper surface of the sieve plate 202, and an opening and closing unit 50 is provided in the gap.

[0053] The driving unit 30 includes a suspension column 301, a driving motor 302 and a power plate 303. The driving motor 302 is installed on the shell 10. The suspension column 301 is drivingly connected to the output shaft of the driving motor 302. The suspension column 301 is located above the sieve plate 202 and is coaxial with the sieve plate 202. One side of the power plate 303 is fixed to the suspension column 301, and the side away from the suspension column 301 abuts against the inner wall of the shell 10, and the bottom wall of the power plate 303 abuts against the upper surface of the sieve plate 202.

[0054] Specifically, a guide surface 3032 is obliquely provided on the top of the power plate 303 , and the guide surface 3032 sends the materials falling on the top of the power plate 303 to the front of the power plate 303 .

[0055] When the power plate 303 needs to pass through the gap, the opening and closing unit 50 opens the gap, and after the power plate 303 passes through the gap, the opening and closing unit 50 closes the gap.

[0056] It should be noted that the moving direction of the power plate 303 is forward.

[0057] After the driving motor 302 is started, it drives the suspension column 301 to rotate. During the rotation of the suspension column 301, it drives the power plate 303 to rotate. When the power plate 303 rotates to the gap, the opening and closing unit 50 opens the gap for the power plate 303 to pass through. After the power plate 303 passes through the gap, the opening and closing unit 50 closes the gap.

[0058] In some embodiments, see Figure 2A through slot 2024 aligned with the gap is formed through the upper surface of the sieve plate 202. The opening and closing unit 50 includes a shift plate 501 and an elastic portion. The shift plate 501 is slidably fitted in the through slot 2024 and has an inclined surface for squeezing the power plate 303. The elastic portion is disposed between the shift plate 501 and the sieve plate 202 and has a preload force for allowing the shift plate 501 to move upward.

[0059] Among them, the shift plate 501 is squeezed by the power plate 501 and moves downward until its top surface is flush with the upper surface of the screen plate 202. When the power plate 303 passes through the gap, the elastic part drives the shift plate 501 to move upward until it abuts against the bottom wall of the partition 201.

[0060] Specifically, the elastic part includes a reset plate 502, a guide rod 504 and a reset member 503. The reset plate 502 is sleeved on the bottom of the shift plate 501 and the two are fixed to each other. Two guide rods 504 are provided. The two guide rods 504 are vertically arranged on both sides of the reset plate 502, and the tops of the two guide rods 504 are fixed to the bottom wall of the sieve plate 202. The reset member 503 corresponds to the guide rods 504 one by one. The reset member 503 has a pre-tightening force that allows the shift plate 501 to move upward. The reset member 503 can be a spring. The reset member 503 is sleeved on the guide rod 504. One end of the reset member 503 is fixed to the bottom wall of the sieve plate 202, and the other end of the reset member 503 is fixed to the upper surface of the reset plate 502.

[0061] After being squeezed by the power plate 303, the shift plate 501 moves downward until the top surface of the shift plate 501 is flush with the upper surface of the screen plate 202. At this time, the shift plate 501 drives the reset plate 502 to move downward along the guide rod 504, and the reset plate 502 stretches the reset member 503; after the power plate 303 passes through the gap, the reset member 503 restores the deformation and drives the reset plate 502 to move upward along the guide rod 504, and the reset plate 502 drives the shift plate 501 to move upward until the shift plate 501 completely covers the gap.

[0062] In some embodiments, see Figure 2 and Figure 3 The particle grading device for the production of thermal insulation materials also includes a transverse pushing unit 60, which is arranged on the side of the power plate 501 facing the end area 2023. The transverse pushing unit 60 includes two transverse pushing plates 601 radially spaced apart along the screen plate 202 and a telescopic portion for the distance between the two transverse pushing plates 601.

[0063] Specifically, a horizontally arranged adjustment groove 3031 is opened on one side of the power plate 303 facing the horizontal pushing unit 60, and the adjustment groove 3031 is a square groove. The telescopic part is arranged in the adjustment groove 3031, and the telescopic part includes an adjustment block 602, an adjustment screw 603 and an adjustment motor 604. The adjustment block 602 corresponds to the horizontal pushing plate 601 one by one. The adjustment block 602 is square and slidingly adapted with the adjustment groove 3031. The adjustment screw 603 is rotatably connected to the adjustment groove 3031 around its own central axis. The two ends of the adjustment screw 603 are provided with threads with different rotation directions. The two ends of the adjustment screw 603 respectively pass through the two adjustment blocks 602 and the adjustment screw 603 is threadedly adapted with the adjustment block 602. The two adjustment blocks 602 are respectively arranged on the two sections of the thread of the adjustment screw 603. The adjustment motor 604 is fixedly installed in the adjustment groove 3031, and the output shaft end of the adjustment motor 604 is fixed to one end of the adjustment screw 603.

[0064] During the movement of the material from the starting area 2022 to the end area 2023, the adjusting motor 604 starts to rotate forward to drive the adjusting screw 603 to rotate forward, so that the adjusting screw 603 drives the two horizontal push plates 601 to approach each other, and the adjusting motor 604 starts to rotate backward to drive the adjusting screw 603 to rotate backward, so that the adjusting screw 603 drives the two horizontal push plates 601 to move away from each other. The adjusting motor 604 switches between forward and reverse rotation regularly, so that the two horizontal push plates 601 switch regularly between the two general states of simultaneously contracting inward or simultaneously expanding outward, thereby giving the material a lateral radial force, reducing the material's stay between the sieve holes, and increasing the probability of the material falling into the sieve hole that meets its own diameter.

[0065] In some embodiments, see Figure 2 The calibration unit 40 also includes a calibration part corresponding to the verification area 102 one by one, the calibration part includes a blowing device 401, a launching tube 402, and a plurality of material receiving pipes 403. The launching tube 402 is arranged in the verification area 102, and the launching tube 402 has a launching port. The blowing device 401 is connected to the launching port and is used to blow air into the launching tube 402 so that the material is ejected from the launching port. The plurality of material receiving pipes 403 are arranged at intervals along the axial direction of the launching port to receive materials of different diameters.

[0066] After the material falls into the launch tube 402 , the blowing device 401 blows the material to the outside through the launch port, thereby blowing materials of different diameters into different material receiving pipes 403 .

[0067] In some embodiments, see Figure 1 One of the material receiving pipes 403 extends out of the shell 10 and leads to a storage area for storing graded materials, and the other material receiving pipes 403 extend out of the shell 10 and lead to a screening area for storing pre-graded materials.

[0068] Specifically, two receiving pipes 403 are provided. The receiving pipe 403 leading to the material storage area is the first receiving pipe, and the receiving pipe 403 leading to the screening area is the second receiving pipe. The first receiving pipe and the second receiving pipe are arranged from near to far along the axial direction of the launch port.

[0069] The material in the first receiving pipe is transported to the storage area for storage for future use, and the material in the second receiving pipe is re-screened.

[0070] In some embodiments, see Figure 2 The particle grading device for the production of thermal insulation materials also includes a diversion unit 70 arranged between the screening unit 20 and the correction unit 40. The diversion unit 70 has a temporary storage box 701 corresponding to the verification area 102 one by one. The temporary storage box 701 has a receiving port for receiving the material dropped from the corresponding screening area 2021 and a discharge port for the material to flow out. The discharge port is provided with an intermittently opened valve.

[0071] After the material falls from the screening area 2021, it enters the temporary storage box 701. When the valve is in the open state, the material in the temporary storage box 701 falls into the verification area 102 for verification; when the valve is in the closed state, the material in the temporary storage box 701 is stored in the temporary storage box 701. In this way, the material enters the verification area 102 regularly in batches, reducing the large amount of material entering the verification area 102 in a short period of time, and reducing the error rate of the verification area 102.

[0072] In some embodiments, see Figure 2 The diversion unit 70 further includes a diversion tube 702 disposed between the temporary storage box 701 and the verification area 102 , and the diameter of the diversion tube 702 at one end close to the temporary storage box 701 is larger than the diameter of the diversion tube 702 at one end close to the verification area 102 .

[0073] The diameter of the diverter tube 702 decreases gradually from top to bottom. After the temporary storage box 701 discharges the materials, the discharge speed from the diverter tube 702 is slowed down, so that there will be no material accumulation in the verification area 102, thereby further reducing the error rate of the verification area 102.

[0074] Based on the same inventive concept, the embodiment of the present application also provides a particle classification method for producing thermal insulation materials, the steps are as follows:

[0075] S1, the material to be classified is introduced into the starting area 2022 from the feeding port 101, and the driving unit 30 is started to drive the material from the starting area 2022 to the end area 2023, and the material falls from the screening area 2021 to the verification area 102 during the movement;

[0076] S2. The materials dropped from the screening area 2021 are judged in the corresponding verification area 102 to see whether they meet the corresponding sieve hole diameter of the screening area 2021. The materials that meet the corresponding sieve hole diameter of the screening area 2021 are sent to the material storage area, and the materials that do not meet the corresponding sieve hole diameter of the screening area 2021 are sent to the to-be-classified area.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A particle classification device for producing thermal insulation materials, characterized in that: It comprises a shell with a feeding port, and a screening unit, a driving unit and a correction unit arranged in the shell; the screening unit comprises a partition and a sieve plate both fixed to the inner side wall of the shell, a plurality of screening areas evenly distributed along the axis thereof are arranged on the plate surface of the sieve plate, the sieve hole diameters of the screening areas increase successively along the circumference of the sieve plate, and the sieve hole diameters of the same screening area are the same, the screening areas with the smallest and largest apertures are respectively a starting area and an end area, the partition is perpendicular to the sieve plate and is located on the top of the sieve plate, the starting area and the end area are distributed on opposite sides of the partition, the driving unit is used to drive the material to move from the starting area to the end area, the correction unit is arranged below the sieve plate, and has a verification area corresponding to the screening areas one by one, the verification area is used to check whether the material dropped from the corresponding screening area meets the sieve hole diameter of the screening area; A gap is left between the bottom wall of the partition plate and the upper surface of the screen plate, and an opening and closing unit is provided in the gap; The driving unit comprises: A driving motor is mounted on the housing; A hanging column is drivingly connected to the output shaft of the driving motor, and the hanging column is located above the sieve plate and is coaxial with the sieve plate; A power plate, one side of which is fixed to the suspension column, and the side away from the suspension column is in contact with the inner wall of the shell, and the bottom wall of the power plate is in contact with the upper surface of the screen plate; Wherein, when the power plate needs to pass through the gap, the opening and closing unit opens the gap, and after the power plate passes through the gap, the opening and closing unit closes the gap; The upper surface of the sieve plate is provided with a through groove aligned with the gap; The opening and closing unit comprises: A shift plate is slidably adapted in the through slot and has an inclined surface for the power plate to be pressed; An elastic part, arranged between the baffle plate and the screen plate, having a pre-tightening force for allowing the baffle plate to move upward; Among them, the shift plate moves downward after being squeezed by the power plate until its top surface is flush with the upper surface of the screen plate. When the power plate passes through the gap, the elastic part drives the shift plate to move upward until it abuts against the bottom wall of the partition.

2. The particle classification device for producing thermal insulation materials according to claim 1, characterized in that: It also includes a transverse pushing unit, which is arranged on the side of the power plate facing the end area. The transverse pushing unit includes two transverse pushing plates spaced apart radially along the screen plate and a telescopic part for adjusting the distance between the two transverse pushing plates.

3. The particle classification device for producing thermal insulation materials according to claim 2, characterized in that: A horizontally arranged adjustment slot is provided on one side of the power plate facing the horizontal pushing unit, the adjustment slot is a square slot, and the telescopic part is arranged in the adjustment slot; The telescopic part includes an adjusting block, an adjusting screw and an adjusting motor. The adjusting block corresponds to the horizontal push plate one by one. The adjusting block is square and slidably fits in the adjusting groove. The adjusting screw rotates around its own central axis and is connected in the adjusting groove. Both ends of the adjusting screw are provided with threads with different rotation directions. The two ends of the adjusting screw respectively pass through the two adjusting blocks and the adjusting screw is threadably fit in the adjusting block. The two adjusting blocks are respectively arranged on the two sections of the threads of the adjusting screw. The adjusting motor is fixedly installed in the adjusting groove, and the output shaft end of the adjusting motor is fixed to one end of the adjusting screw.

4. The particle classification device for producing thermal insulation materials according to claim 1, characterized in that: The correction unit further includes a correction part corresponding to the verification area one by one; The correction unit comprises: A launching tube is arranged in the verification area, and the launching tube has a launching port; A blowing device, connected to the launching port and used to blow air into the launching tube so that the material is ejected from the launching port; A plurality of material receiving pipes are arranged at intervals along the axial direction of the launching port and are used to receive materials of different diameters.

5. The particle classification device for producing thermal insulation materials according to claim 4, characterized in that: One of the material receiving pipes leads to a material storage area for storing the graded materials, and the other material receiving pipes lead to a screening area for storing the graded materials.

6. The particle classification device for producing thermal insulation materials according to claim 1, characterized in that: It also includes a diversion unit disposed between the screening unit and the correction unit, the diversion unit having temporary storage boxes corresponding to the verification areas one by one; The temporary storage box has a receiving port for receiving materials dropped from the corresponding screening area and a discharge port for the materials to flow out, and a valve that is intermittently opened is provided at the discharge port.

7. The particle classification device for producing thermal insulation materials according to claim 6, characterized in that: The diversion unit further includes a diversion tube disposed between the temporary storage box and the verification area, wherein the diameter of the diversion tube at one end close to the temporary storage box is larger than the diameter of the diversion tube at one end close to the verification area.

8. A method for classifying particles for producing thermal insulation materials, using the device for classifying particles for producing thermal insulation materials according to any one of claims 1 to 7, characterized in that: Here are the steps: S1, passing the material to be classified from the feeding port into the screening area located in the starting area, and the driving unit is started to drive the material to move from the starting area to the end area, and the material falls from the screening area to the verification area during the movement; S2. The materials dropped from the screening area are judged in the corresponding verification area whether they meet the corresponding sieve hole diameter of the screening area. The materials that meet the corresponding sieve hole diameter of the screening area are sent to the storage area, and the materials that do not meet the corresponding sieve hole diameter of the screening area are sent to the to-be-classified area.

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