Vibrating screen device

Abstract

The invention provides a vibrating screen device which comprises a first vibrating area, a second vibrating area, a third vibrating area and a fourth vibrating area which are sequentially connected, the first vibrating area is provided with a plurality of first screen holes, the ratio of the width of the first screen holes to the particle size of target particles is smaller than 1, and the ratio of the length of the first screen holes to the particle size of the target particles is smaller than 1; the second vibration area is provided with a plurality of second sieve pores, and the ratio of the width of the second sieve pores to the particle size of target particles is smaller than 1; the third vibration area is provided with a comb tooth structure, the comb tooth structure comprises a plurality of comb tooth pieces arranged at intervals, and the ratio of the distance between every two adjacent comb tooth pieces to the particle size of the target particles is smaller than 1; the fourth vibration area is provided with a discharging port, the ratio of the width of the discharging port to the particle size of the target particles is larger than 1, and the ratio of the length of the discharging port to the particle size of the target particles is also larger than 1. Through the special screen surface structure design, hairiness is removed for multiple times, and the separation efficiency and the separation effect of target particles and hairiness are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to a vibrating screen device. Background Art

[0002] LFT (long fiber reinforced thermoplastic composite material) is highly valued in the field of automotive lightweighting due to its excellent mechanical properties and cost-effectiveness. Its light weight and high strength make it a guarantee of the cruising range of energy vehicles. It is widely used in battery covers, power battery bottom guards, instrument panel frames, door substrates and other parts.

[0003] At present, the production process of LFT materials is mainly based on pultrusion technology. The quality of glass fiber impregnation is mainly affected by the equipment. Uneven glass fiber impregnation often occurs, which is specifically manifested in the explosion of particles and the appearance of too many single free hairs. The hairs are easy to agglomerate into clusters. The existing LFT production equipment cannot remove the hairs, which makes it easy to block the centralized feeding pipeline during the injection molding production process. It is very difficult to clean and affects production efficiency. In addition, the agglomerated hairs are easy to block the injection molding machine feed port and hot runner, affecting the equipment life and product quality. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a vibrating screen device, which can better remove the hairiness through the special design of the surface structure of the vibrating screen.

[0005] This is achieved specifically through the following technical solutions:

[0006] A vibrating screen device comprises a first vibrating zone, a second vibrating zone, a third vibrating zone and a fourth vibrating zone connected in sequence,

[0007] The first vibration zone has a plurality of first sieve holes arranged at intervals, the ratio of the width of the first sieve holes to the particle size of the target particles is less than 1, and the ratio of the length of the first sieve holes to the particle size of the target particles is also less than 1;

[0008] The second vibration zone has a plurality of second sieve holes arranged at intervals, and the ratio of the width of the second sieve holes to the particle size of the target particles is less than 1;

[0009] The third vibration zone has a comb-tooth structure, the comb-tooth structure includes a plurality of comb-tooth pieces arranged at intervals, and the ratio of the interval between two adjacent comb-tooth pieces to the particle size of the target particle is less than 1;

[0010] The fourth vibration zone has a feed opening, the ratio of the width of the feed opening to the particle size of the target particles is greater than 1, and the ratio of the length of the feed opening to the particle size of the target particles is also greater than 1.

[0011] In a specific embodiment, the length of the second sieve hole is greater than the length of the first sieve hole.

[0012] In a specific embodiment, the width of the second sieve hole is not greater than the width of the first sieve hole.

[0013] In a specific embodiment, the ratio of the width of the second sieve hole to the particle size of the target particle is between 0 and 1 / 2;

[0014] The ratio of the length of the second sieve hole to the length of the second vibration zone is between 1 / 5 and 1.

[0015] In a specific embodiment, the comb tooth plate includes a comb tooth portion and a comb tooth root portion connected to each other.

[0016] The projection area of ​​the comb teeth on the third vibration zone is larger than the projection area of ​​the comb tooth roots on the third vibration zone; and / or the spacing between adjacent comb tooth roots is larger than the spacing between adjacent comb tooth portions; and / or the ratio of the spacing between adjacent comb tooth portions to the particle size of the target particle is between 0-1 / 2.

[0017] In a specific embodiment, the third vibration area has a groove portion, and the comb-tooth structure is arranged in the groove portion;

[0018] The groove depth of the groove portion is not greater than the height of the comb-tooth structure; and / or the height of the comb-tooth structure is not greater than twice the particle size of the target particle.

[0019] In a specific embodiment, the ratio of the width of the feed opening to the particle size of the target particles is between 1.5 and 5; the ratio of the length of the feed opening to the particle size of the target particles is also between 1.5 and 5.

[0020] In a specific embodiment, at least two of the first sieve holes are spaced apart along the width direction of the first vibration zone to form a first sieve hole group, and there are multiple first sieve hole groups on the first vibration zone. The multiple first sieve hole groups are spaced apart along the length direction of the first vibration zone, and adjacent first sieve hole groups are staggered.

[0021] In a specific embodiment, the second sieve hole includes a channel, the length of the channel extending along the length direction of the second vibration zone is used as the length of the second sieve hole, and the width of the channel is used as the width of the second sieve hole;

[0022] The channel has a first inner wall extending along the length direction of the second vibration zone. In the top view direction of the second vibration zone, the first inner wall is wavy, and the height difference between the crest and the trough of the wave is not less than the particle size of the target particle; or in the top view direction of the second vibration zone, the first inner wall is in a broken line shape, and the bending angle formed by the first inner wall ranges from 100° to 160°.

[0023] In a specific embodiment, the sum of the areas of all the first sieve holes on the first side of the first vibration zone is S1, and the sum of the areas of all the second sieve holes on the first side of the second vibration zone is S2, wherein S1<S2;

[0024] And / or, the first vibration zone, the second vibration zone, the third vibration zone and the fourth vibration zone have the same width; the length of the first vibration zone is smaller than the length of any one of the second vibration zone, the third vibration zone and the fourth vibration zone.

[0025] The present invention has at least the following beneficial effects:

[0026] The present invention provides a vibrating screen device, comprising a first vibrating zone, a second vibrating zone, a third vibrating zone and a fourth vibrating zone connected in sequence, wherein the first vibrating zone has a plurality of first sieve holes, the ratio of the width of the first sieve holes to the particle size of target particles is less than 1, and the ratio of the length of the first sieve holes to the particle size of target particles is less than 1; the second vibrating zone has a plurality of second sieve holes, the ratio of the width of the second sieve holes to the particle size of target particles is less than 1; the third vibrating zone has a comb tooth structure, the comb tooth structure comprises a plurality of comb tooth pieces arranged at intervals, the ratio of the spacing between two adjacent comb tooth pieces to the particle size of target particles is less than 1; the fourth vibrating zone has a feed opening The ratio of the width of the feed opening to the particle size of the target particles is greater than 1, and the ratio of the length of the feed opening to the particle size of the target particles is also greater than 1. Compared with the traditional simple leaky hole vibrating screen, the vibrating screen device of the present invention sets multiple vibration zones, so that it can achieve powder removal and three removals of hairiness in one screening, which greatly improves the removal efficiency. In addition, the present application fully considers the structural characteristics of the hairiness of the glass fiber monofilament, and provides a comb tooth structure on the third vibration zone to capture the hairiness that has not been removed in the first vibration zone and the second vibration zone, thereby further improving the effect of removing the hairiness, so as to output target particles with higher purity from the feed opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A top view of a vibrating screen device Figure 1 ;

[0029] Figure 2 A-A' section view of a vibrating screen device Figure 1 ;

[0030] Figure 3 A-A' section view of a vibrating screen device Figure 2 ;

[0031] Figure 4 is a cross-sectional view of a third vibration zone;

[0032] Figure 5 A top view of a vibrating screen device Figure 2 ;

[0033] Figure 6 A top view of a vibrating screen device Figure 3 .

[0034] Reference numerals:

[0035] 1-first vibration zone; 2-second vibration zone; 3-third vibration zone; 4-fourth vibration zone; 5-first side; 6-second side;

[0036] 11-first sieve hole; 12-first sieve hole group;

[0037] 21- second sieve hole;

[0038] 211- first inner wall; 212- second inner wall;

[0039] 31-comb tooth structure; 32-groove portion;

[0040] 311-comb teeth;

[0041] 3111-comb tooth portion; 3112-comb tooth root portion;

[0042] 41-feeding port; 42-feeding port group. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1 , 23, a vibrating screen device is used to remove hairiness and powder from target particles when producing continuous fiber reinforced thermoplastic composite materials. The vibrating screen device includes a first vibration zone 1, a second vibration zone 2, a third vibration zone 3 and a fourth vibration zone 4 connected in sequence.

[0045] The first vibration zone 1 has a plurality of first sieve holes 11 arranged at intervals, the ratio of the width b1 of the first sieve hole 11 to the particle size of the target particle is less than 1, the ratio of the length a1 of the first sieve hole 11 to the particle size of the target particle is also less than 1, and the first sieve hole 11 is used to screen out powder in the target particle and preliminarily screen out hairiness in the target particle;

[0046] The second vibration zone 2 has a plurality of second sieve holes 21 arranged at intervals, the ratio of the width b2 of the second sieve holes 21 to the particle size of the target particles is less than 1, the length a2 of the second sieve holes 21 is greater than the length a1 of the first sieve holes 11, and the second sieve holes 21 are used to dock the target particles passing through the first vibration zone 1 and to screen out the hairiness in the target particles for a second time;

[0047] The third vibration zone 3 has a comb tooth structure 31, which includes a plurality of comb tooth pieces 311 arranged at intervals, and the ratio of the interval between two adjacent comb tooth pieces 311 to the particle size of the target particles is less than 1, and is used to dock the target particles passing through the second vibration zone 2, and capture the residual hairiness in the target particles to screen out the hairiness three times;

[0048] The fourth vibration zone 4 has a feed port 41, the ratio of the width b3 of the feed port 41 to the particle size of the target particles is greater than 1, and the ratio of the length a3 of the feed port 41 to the particle size of the target particles is also greater than 1, which is used to dock the target particles passing through the third vibration zone 3 and output them to the next process.

[0049] Compared with the traditional simple leaky hole vibrating screen, the vibrating screen device of the present invention has different screen surface structures in multiple vibration zones, so that the powder can be removed by one screening and the hairiness can be removed three times, which greatly improves the efficiency and effect of removing the hairiness. In addition, the present application fully considers the structural characteristics of the hairiness of the glass fiber monofilament, and arranges a special comb tooth structure 31 on the surface of the third vibration zone 3. The comb tooth plates 311 contact the hairiness and capture the agglomerated hairiness. At the same time, the spacing between the comb tooth plates 311 is smaller than the particle size of the target particles. After the hairiness is captured, it can pass through the spacing and be separated from the target particles and fall off, which greatly improves the removal effect of the agglomerated hairiness.

[0050] In one embodiment, the first sieve holes 11 and the second sieve holes 12 have the same shape, size, and layout.

[0051] In other embodiments, at least one of the shape, size, and layout of the first sieve holes 11 and the second sieve holes 12 is different.

[0052] Specifically, Figure 1 As shown, the length of the second sieve hole 21 is greater than that of the first sieve hole 11. The longer length of the second sieve hole 21 can better separate particles and hairiness, increase the hairiness leakage efficiency, further remove the hairiness that is not removed in the first vibration zone, and improve the effect of hairiness removal.

[0053] The width b2 of the second sieve hole 21 is not greater than the width b1 of the first sieve hole 11, so that the target particles after passing through the pelletizer can be further screened out of powder and hairiness after passing through the first sieve hole 11 for preliminary screening out of powder and hairiness. In general, the first sieve hole 11 can remove most of the powder, and a small part of the hairiness can be removed through the first sieve hole 11, and most of the hairiness will reach the second vibration zone 2 with the target particles, and then be removed through the second sieve hole 21.

[0054] In this embodiment, the width b2 of the second sieve hole 21 is smaller than the width b1 of the first sieve hole 11. The target particles pass through the first vibration zone 1, and the large-particle powder and a small part of the hairiness therein can be discharged through the first sieve hole 11, so as to achieve a one-time screening of the powder and hairiness; and the target particles after the one-time screening pass through the second vibration zone 2 again, at which time the powder has been completely removed, while most of the glass fiber monofilament hairiness is still on the target particles, and the second vibration zone 2 is provided with a second sieve hole 21 with a smaller width, and the second sieve hole 21 can allow the glass fiber monofilament hairiness to pass through, and the hairiness that has not been removed in the first vibration zone 1 can be further screened out through the second sieve hole 21, thereby improving the effect of removing the hairiness.

[0055] like Figure 1 As shown, the ratio of the width b2 of the second sieve hole 21 to the particle size of the target particles is between 0-1 / 2. The second sieve hole 21 at this width can prevent the target particles from falling, and at the same time can make most of the glass fiber monofilament hairiness on the target particles fall off, thereby achieving the separation of the hairiness and the target particles to remove most of the hairiness.

[0056] The ratio of the length a2 of the second sieve hole 21 to the length L2 of the second vibration zone 2 is between 1 / 5 and 1. The present application increases the length of the second sieve hole 21 so that the glass fiber hairiness can fall off better, thereby improving the separation effect and efficiency of the hairiness and target particles. In addition, the ratio of the length of the second sieve hole 21 to the length of the second vibration zone 2 is appropriate, and the distribution is more reasonable.

[0057] like Figure 4 As shown, the comb teeth 311 include a connected comb tooth portion 3111 and a comb tooth root portion 3112. The comb tooth portion 3111 contacts the hairiness and captures the agglomerated hairiness. At the same time, the spacing between the comb teeth 3111 is smaller than the particle size of the target particles. After being captured, the hairiness can pass through the spacing and be separated from the target particles and fall off, thereby greatly improving the removal effect of the agglomerated hairiness.

[0058] The projection area of ​​the comb tooth portion 3111 on the third vibration zone 3 is greater than the projection area of ​​the comb tooth root 3112 on the third vibration zone 3. The projection area of ​​the tooth portion is increased by designing the comb tooth portion 3111 and the comb tooth root 3112 of the comb tooth plate 311 to have different sizes, thereby increasing the contact area between the comb tooth portion 3111 and the target particles, so that the comb tooth portion 3111 can better capture the agglomerated hairiness and improve the removal effect of the agglomerated hairiness.

[0059] The spacing c2 between adjacent comb tooth roots 3112 is greater than the spacing c1 between adjacent comb tooth portions 3111. By increasing the spacing between the comb tooth roots 3112, the glass fiber hairiness can be better dropped. The comb tooth plate 311 under this structure can further remove glass fiber hairiness and agglomerated hairiness.

[0060] The ratio of the spacing c1 between adjacent comb tooth portions 3111 to the particle size of the target particles is between 0 and 1 / 2. Under the design of the spacing c1 between the comb tooth portions 3111, it is possible to remove glass fiber hairiness and agglomerated hairiness while preventing the target particles from falling.

[0061] like Figure 3 , 4 As shown, the third vibration zone 3 has a groove portion 32, and the comb tooth structure 31 is arranged in the groove portion 32; the groove depth h2 of the groove portion 32 is not greater than the height h1 of the comb tooth structure 31; and / or, the height h1 of the comb tooth structure 31 is not greater than twice the particle size of the target particle.

[0062] In one embodiment, the third vibration zone 3 has a groove portion 32, and the comb tooth structure 31 is arranged in the groove portion 32. The groove depth of the groove portion 32 is not greater than the height of the comb tooth structure 31. The groove portion 32 accommodates the comb tooth structure 31, and a part of the glass fiber hairiness captured by the comb tooth structure 31 can be placed in the groove portion 32, and its spatial layout is more reasonable. In addition, the groove depth of the groove portion 32 is not greater than the height of the comb tooth structure 31, so that the target particles and the hairiness on the target particles can contact the comb tooth structure 31, and the target particles will not fall into the groove portion 32 and cannot enter the next vibration zone because the groove portion 32 is too deep. Preferably, the groove depth of the groove portion 32 is equal to the height of the comb tooth structure 31.

[0063] In another embodiment, the third vibration zone 3 has a groove portion 32, and the comb tooth structure 31 is arranged in the groove portion 32, and the height of the comb tooth structure 31 is not more than twice the particle size of the target particle. Considering that the comb tooth structure 31 (comb tooth piece 311) may be bent or deformed under the action of external force for a long time, the height of the comb tooth structure 31 is specially designed in the present application (that is, the height of the comb tooth structure 31 is set to be no more than twice the particle size of the target particle). Even if the comb tooth structure 31 is bent or deformed, the setting of a smaller height can ensure that the spacing between the teeth is appropriate, and avoid excessive vacancies that cause the target particles to fall into the groove portion.

[0064] like Figure 4 As shown, the height H of the third vibration region 3 is greater than twice the groove depth h2 of the recessed groove portion 32 .

[0065] like Figure 5 As shown, there are multiple feed openings 41, and the multiple feed openings 41 are arranged at intervals in the fourth vibration zone 4, and the ratio of the width b3 of the feed opening 41 to the particle size of the target particles is between 1.5-5; the feed openings 41 are arranged at intervals in the fourth vibration zone 4, and the ratio of the length a3 of the feed opening 41 to the particle size of the target particles is also between 1.5-5. The present application uses a special design of the size of the feed opening 41 to enable the target particles to better pass through the feed opening 41 and enter the next process.

[0066] In this embodiment, the ratio of the width of the feed port 41 to the particle size of the target particles is greater than 1 and less than 3; the feed port 41 is arranged at intervals in the fourth vibration zone 4, and the ratio of the length of the feed port 41 to the particle size of the target particles is also greater than 1 and less than 3, and the feed port 41 includes a circular hole.

[0067] Furthermore, considering the material discharge efficiency, the present application specially designs the arrangement of the material discharge port 41. Specifically, Figure 5 , 6 As shown, at least two feed openings 41 are arranged at intervals along the width direction of the fourth vibration zone 4 to form a feed opening group 42, and the fourth vibration zone 4 has multiple feed opening groups 42, and the multiple feed opening groups 42 are arranged at intervals along the length direction of the fourth vibration zone 4, and adjacent feed opening groups 42 are arranged in a staggered manner. The present application uses the staggered feed opening groups 42 to enable the target particles to pass through the feed opening 41 faster to enter the next process.

[0068] Similarly, considering the efficiency of removing powder, the present application also specially designs the arrangement of the first sieve holes 11. Specifically, Figure 5 , 6As shown, at least two first sieve holes 11 are arranged at intervals along the width direction of the first vibration zone 1 to form a first sieve hole group 12. The first vibration zone 1 has multiple first sieve hole groups 12, and the multiple first sieve hole groups 12 are arranged at intervals along the length direction of the first vibration zone 1, and adjacent first sieve hole groups 12 are arranged in a staggered manner. The present application also arranges the first sieve holes 11 in the first vibration zone 1, and adopts the staggered first sieve hole groups 12, so that the powder can pass through the first sieve holes 11 faster to be removed.

[0069] like Figure 1-6 As shown, the first sieve hole 11 includes a circular hole, and the diameter of the circular hole serves as the length of the first sieve hole 11 and the width of the first sieve hole 11; or, the first sieve hole 11 includes a polygonal hole, and the length of the polygonal hole extending along the length direction of the first vibration zone 1 serves as the length of the first sieve hole 11, and the length of the polygonal hole extending along the width direction of the first vibration zone 1 serves as the width of the first sieve hole 11.

[0070] In one embodiment, the first sieve hole 11 includes a circular hole, the diameter of the circular hole serves as the length of the first sieve hole 11 and the width of the first sieve hole 11, and multiple circular holes are randomly arranged in the first vibration zone 1. The shape of the circular hole is closer to the shape of the powder particles, and the circular hole can better discharge the powder.

[0071] In another embodiment, the first sieve hole 11 includes a polygonal hole, and the length of the polygonal hole extending in the length direction of the first vibration zone 1 is used as the length of the first sieve hole 11, and the length of the polygonal hole extending in the width direction of the first vibration zone 1 is used as the width of the first sieve hole 11, wherein the polygonal hole includes a triangular hole, a square hole, a trapezoidal hole, etc.

[0072] like Figure 6 As shown, the second sieve hole 21 includes a channel, the length of the channel extending along the length direction of the second vibration zone 2 is used as the length of the second sieve hole 21, and the width of the channel is used as the width of the second sieve hole 21; the channel has a first inner wall 211 extending along the length direction of the second vibration zone 2, and along the top view direction of the second vibration zone 2, the first inner wall 211 is wavy, and the height difference between the wave crest and the wave trough of the wave is not less than the particle size of the target particle; or along the top view direction of the second vibration zone 2, the first inner wall 211 is a broken line, and the angle range of the bending angle formed by the first inner wall 211 is between 100° and 160°. Through the special design of the channel structure, the hairiness can be better removed through the channel.

[0073] In one embodiment, the first inner wall 211 is wavy, and the height difference between the wave crest and the wave trough is not less than the particle size of the target particles. When a large number of target particles are transported through the second vibration zone along the length direction, the design of the height difference between the wave crest and the wave trough can enable the hairiness to pass through the channel better to be removed.

[0074] In another embodiment, along the top view direction of the second vibration area 2, the first inner wall 211 is in a broken line shape (eg Figure 6 As shown), and the angle range of the bending angle α formed by the first inner wall 211 is between 100° and 160°. When the angle range of the bending angle α formed by the first inner wall 211 is 160°, the bending amplitude of the channel is small, which can make most of the glass fiber hairiness leak down, thereby improving the leakage efficiency; when the angle range of the bending angle α formed by the first inner wall 211 is 100°, the bending amplitude of the channel is large, which can make the inclined and staggered glass fiber hairiness leak down better. The present application can make the hairiness in the target particles pass through the channel better to be removed through the angle design, thereby greatly improving the removal efficiency.

[0075] The hole also has a second inner wall 212 extending along the width direction of the second vibration area 2. Figure 6 As shown, two first inner walls 211 are arranged opposite to each other, and the second inner walls 212 are arranged opposite to each other, and the first inner walls 211 and the second inner walls 212 are connected to form a channel.

[0076] like Figure 2 , 3 As shown, the first sieve hole 11 extends from the first side 5 of the first vibration zone 1 to the second side 6 of the first vibration zone 1 to penetrate the first vibration zone 1; the second sieve hole 21 extends from the first side 5 of the second vibration zone 2 to the second side 6 of the second vibration zone 2 to penetrate the second vibration zone 2; the feed opening 41 extends from the first side 5 of the fourth vibration zone 4 to the second side 6 of the fourth vibration zone 4 to penetrate the fourth vibration zone 4. Since the first sieve hole 11 needs to allow dust and hairiness to pass through, the second sieve hole 21 needs to allow hairiness to pass through, and the feed opening 41 needs to allow target particles to pass through, the first sieve hole 11, the second sieve hole 21 and the feed opening 41 need to be set as a through hole structure.

[0077] like Figure 1-6 As shown, the sum of the areas of all the first sieve holes 11 on the first side 5 of the first vibration zone 1 is S1, and the sum of the areas of all the second sieve holes 21 on the first side 5 of the second vibration zone 2 is S2, wherein S1<S2. In consideration of the content of powder and hairiness in the target particles and the difficulty of removing them, the areas of all the first sieve holes 11 and all the second sieve holes 21 are specially designed so that they can not only meet the requirements of powder and hairiness removal, but also make the spatial layout more reasonable.

[0078] Furthermore, the ratio of the area S1 to the area of ​​the first vibration zone 1 is between 1 / 3 and 4 / 5; the ratio of the area S2 to the area of ​​the second vibration zone 2 is between 1 / 3 and 4 / 5.

[0079] like Figure 1As shown, the first vibration zone 1, the second vibration zone 2, the third vibration zone 3 and the fourth vibration zone 4 have the same width (all W); the length L1 of the first vibration zone 1 is smaller than any one of the length L2 of the second vibration zone 2, the length L3 of the third vibration zone 3 and the length L4 of the fourth vibration zone 4. Similarly, considering that powder in the target particles is easier to remove than hairiness, a smaller first vibration zone 1 is set to make the spatial layout more reasonable.

[0080] Among them, the width direction of the first vibration zone 1, the width direction of the second vibration zone 2, the width direction of the third vibration zone 3 and the width direction of the fourth vibration zone 4 are the same, which are all width directions of the entire vibration screen device; the length direction of the first vibration zone 1, the length direction of the second vibration zone 2, the length direction of the third vibration zone 3 and the length direction of the fourth vibration zone 4 are the same, which are all length directions of the entire vibration screen device.

[0081] The vibration screen device of the present application is intended to produce continuous fiber reinforced thermoplastic composite materials. After the particles have passed through the pelletizer, they can pass through the vibration screen device to obtain pure particles with less glass fiber fluff. The specific working process is as follows: in the first vibration zone, the powder and part of the glass fiber monofilament fluff generated by pelletizing are first removed through the smaller first sieve hole; after the second vibration zone, most of the glass fiber monofilament fluff will pass through the second sieve hole to the lower part of the vibration screen to be separated, so as to achieve the secondary separation of particles and fluff; after the third vibration zone, the unseparated glass fiber fluff will further fall into the root of the comb teeth due to vibration, and the agglomerated glass fiber fluff will entangle the comb teeth and cannot be further transported with the particles. Finally, the pure particles enter the next process through the discharge port in the fourth vibration zone.

[0082] Compared with the traditional simple leaky hole vibrating screen, this vibrating screen can achieve three removals of glass fiber hairiness through a special screen surface structure design, and a single removal process of agglomerated glass fiber hairiness, thereby achieving product particles with higher purity. In addition, the traditional vibrating screen (i.e., round hole vibrating screen) cannot effectively leak into the lower layer of the vibrating screen due to the flat vibrating screen surface transportation characteristics of glass fiber hairiness, while the vibrating screen of the present invention has a channel structure and a comb tooth structure, which fully considers the structural characteristics of glass fiber monofilament hairiness, and achieves efficient separation of particles and glass fiber hairiness or agglomerated hairiness through physical forced isolation.

[0083] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0084] The expressions (such as "first", "second", etc.) used in various embodiments of the present invention may modify the various constituent elements in various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing an element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0085] In the present invention, those skilled in the art need to understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0086] The terms used in various embodiments of the present invention are only used for the purpose of describing specific embodiments and are not intended to limit various embodiments of the present invention. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meaning generally understood by those of ordinary skill in the art to which the various embodiments of the present invention belong. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in various embodiments of the present invention.

Claims

1. A vibrating screen device, characterized in that: comprising a first vibration area, a second vibration area, a third vibration area and a fourth vibration area connected in sequence, The first vibration zone has a plurality of first sieve holes arranged at intervals, the ratio of the width of the first sieve holes to the particle size of the target particles is less than 1, and the ratio of the length of the first sieve holes to the particle size of the target particles is also less than 1; The second vibration zone has a plurality of second sieve holes arranged at intervals, and the ratio of the width of the second sieve holes to the particle size of the target particles is less than 1; The third vibration zone has a comb-tooth structure, the comb-tooth structure includes a plurality of comb-tooth pieces arranged at intervals, and the ratio of the interval between two adjacent comb-tooth pieces to the particle size of the target particle is less than 1; The fourth vibration zone has a feed opening, the ratio of the width of the feed opening to the particle size of the target particles is greater than 1, and the ratio of the length of the feed opening to the particle size of the target particles is also greater than 1.

2. The vibrating screen device according to claim 1, characterized in that: The length of the second sieve hole is greater than the length of the first sieve hole.

3. The vibrating screen device according to claim 2, characterized in that: The width of the second sieve hole is not greater than the width of the first sieve hole.

4. The vibrating screen device according to any one of claims 1 or 3, characterized in that: The ratio of the width of the second sieve hole to the particle size of the target particle is between 0 and 1 / 2; The ratio of the length of the second sieve hole to the length of the second vibration zone is between 1 / 5 and 1.

5. The vibrating screen device according to claim 1, characterized in that: The comb tooth piece comprises a connected comb tooth portion and a comb tooth root portion, The projection area of ​​the comb teeth on the third vibration zone is larger than the projection area of ​​the comb tooth roots on the third vibration zone; and / or the spacing between adjacent comb tooth roots is larger than the spacing between adjacent comb tooth portions; and / or the ratio of the spacing between adjacent comb tooth portions to the particle size of the target particle is between 0-1 / 2.

6. The vibrating screen device according to claim 1, characterized in that: The third vibration area has a groove portion, and the comb-tooth structure is arranged in the groove portion; The groove depth of the groove portion is not greater than the height of the comb-tooth structure; and / or the height of the comb-tooth structure is not greater than twice the particle size of the target particle.

7. The vibrating screen device according to claim 1, characterized in that: The ratio of the width of the feed opening to the particle size of the target particles is between 1.5 and 5; the ratio of the length of the feed opening to the particle size of the target particles is also between 1.5 and 5.

8. The vibrating screen device according to claim 6, characterized in that: At least two of the first sieve holes are spaced apart along the width direction of the first vibration zone to form a first sieve hole group. There are multiple first sieve hole groups on the first vibration zone. The multiple first sieve hole groups are spaced apart along the length direction of the first vibration zone, and adjacent first sieve hole groups are staggered.

9. The vibrating screen device according to claim 1, characterized in that: The second sieve hole comprises a channel, the length of the channel extending along the length direction of the second vibration zone is used as the length of the second sieve hole, and the width of the channel is used as the width of the second sieve hole; The channel has a first inner wall extending along the length direction of the second vibration zone. In the top view direction of the second vibration zone, the first inner wall is wavy, and the height difference between the crest and the trough of the wave is not less than the particle size of the target particle; or in the top view direction of the second vibration zone, the first inner wall is in a broken line shape, and the bending angle formed by the first inner wall ranges from 100° to 160°.

10. The vibrating screen device according to claim 1, characterized in that: The sum of the areas of all the first sieve holes on the first side of the first vibration zone is S1, and the sum of the areas of all the second sieve holes on the first side of the second vibration zone is S2, wherein S1<S2; And / or, the first vibration zone, the second vibration zone, the third vibration zone and the fourth vibration zone have the same width; the length of the first vibration zone is smaller than the length of any one of the second vibration zone, the third vibration zone and the fourth vibration zone.

Images