Multistage screening device for polyester chip processing

Abstract

The utility model discloses a multi-stage screening device for polyester chip processing. The multi-stage screening device comprises a box body, a screening net plate and a driving assembly. The box body is provided with a feeding hole, a final discharge hole and a plurality of screening discharge holes; the multiple screening net plates are sequentially connected end to end in the box body to form a screening channel connected between the feeding port and the final discharging port, the multiple screening net plates are obliquely arranged in the same direction, and the lower ends of the screening net plates all face the final discharging port. The multiple screening discharging openings correspond to the lower portions of the multiple screening net plates in a one-to-one mode, and each screening net plate freely extends out of the box body along the two sides of the screening channel. The driving assembly is arranged outside the box body and connected with the end, penetrating out of the box body, of each screening net plate. Compared with the prior art, the polyester chip screening device has the advantages that polyester chips are screened efficiently, and screened multi-stage particles are discharged from the final-stage discharge port and the screening discharge ports respectively, so that the purpose of screening the polyester chips is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening structures, in particular to a multi-stage screening device for processing polyester chips. Background Art

[0002] Polyester chips are amorphous polymers, also known as polyethylene terephthalate chips. Fiber-grade polyester chips are suitable for spinning various polyester staple fibers and filaments, making various clothing fabrics, cords and woven paper filter screens, etc. Film-grade polyester chips are suitable for producing various films and film bases, making various films, packaging films, videotapes, films, zippers and powder coatings. Polyester chips are flaky particles with a size of about 4*5*2 mm obtained by casting and pelletizing polyester melt. However, there is a problem of different particle sizes in the flaky particles of polyester chips.

[0003] At present, it is generally necessary to use a sifter to sieve the flaky particles. For example, CN220614642U discloses a continuous sifter for processing polyester chips, including:

[0004] The box body has air inlets and air outlets on both sides respectively, and a fan is arranged in the air inlet;

[0005] The first screening plate is arranged in the box;

[0006] The second screening plate is arranged in the box body and is located below the first screening plate;

[0007] A movable box, wherein a slide groove is provided in the box body, and the movable box is slidably connected to the slide groove by a slider; and

[0008] The driving unit is arranged in the box body and connected with the movable box so that the movable box can make reciprocating motion along the length direction of the slide slot.

[0009] The first screen plate and the second screen plate in the above-mentioned continuous screener are fixedly arranged, and the polyester chips are flaky particles, resulting in a relatively low sliding efficiency of the polyester chips on the first screen plate and the second screen plate, thereby resulting in a relatively low screening efficiency of the polyester chips. Utility Model Content

[0010] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a multi-stage screening device for processing polyester chips, so as to solve the problem of low screening efficiency for polyester chips in the prior art.

[0011] To achieve the above purpose, the utility model adopts the following technical solution: a multi-stage screening device for polyester chip processing, comprising:

[0012] A box body, wherein the box body has a feed inlet, a final discharge outlet, and a plurality of screening discharge outlets;

[0013] The screening mesh plate has multiple screening mesh plates, and the multiple screening mesh plates are connected end to end in sequence in the box body to form a screening channel connected between the feed port and the final discharge port. The multiple screening mesh plates are arranged obliquely in the same direction and the lower ends of the screening mesh plates are arranged toward the final discharge port. The multiple screening discharge ports correspond to the bottom of the multiple screening mesh plates one by one, and each screening mesh plate freely extends to the outside of the box body along both sides of the screening channel;

[0014] A driving assembly is arranged outside the box and is connected to one end of each screening mesh plate that passes through the box and is used to drive multiple screening mesh plates to slide back and forth synchronously.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The polyester chips are added into the box from the feed port, and the driving component drives multiple screening mesh plates to slide back and forth synchronously, so that the polyester chips slide on the multiple screening mesh plates in sequence to efficiently screen the polyester chips. The multi-level particles after screening are discharged from the final discharge port and multiple screening discharge ports respectively, so as to achieve the purpose of screening the polyester chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Cross-sectional view of the middle box.

[0019] The figure marks in the drawings of the specification include: box body 1, screening mesh plate 2, driving assembly 3, telescope 31, transmission frame 32, first connecting strip 321, second connecting strip 322, reinforcing strip 323, feed port 4, final discharge port 5, screening discharge port 6, feed hopper 7, material guide channel 8, mounting plate 9, and receiving plate 10. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below through specific implementation methods:

[0021] Since polyester chips are flaky particles and the screening plates in the existing screening devices are fixedly arranged, the polyester chips are not easy to slide on the screening plates, resulting in a relatively low screening efficiency of the polyester chips. Figure 1 and Figure 2As shown, an embodiment of the utility model proposes a multi-stage screening device for processing polyester chips, comprising a box body 1, a screening mesh plate 2 and a driving assembly 3; wherein the box body 1 has a feed port 4, a final discharge port 5 and a plurality of screening discharge ports 6; the screening mesh plates 2 have a plurality of them and the plurality of screening mesh plates 2 are connected end to end in sequence in the box body 1 to form a screening channel connected between the feed port 4 and the final discharge port 5, the plurality of screening mesh plates 2 are arranged obliquely in the same direction and the lower ends of the screening mesh plates 2 are arranged toward the final discharge port 5, the plurality of screening discharge ports 6 correspond one by one to the bottom of the plurality of screening mesh plates 2, and each screening mesh plate 2 extends freely to the outside of the box body 1 along both sides of the screening channel; the driving assembly 3 is arranged outside the box body 1 and is connected to one end of each screening mesh plate 2 that passes through the outside of the box body 1, for driving the plurality of screening mesh plates 2 to slide back and forth synchronously.

[0022] When using:

[0023] The polyester chips are added into the box 1 from the feed port 4, and the driving component 3 drives the multiple screening mesh plates 2 to slide synchronously and reciprocally, and the arrangement of the multiple screening mesh plates 2 is coordinated to make the polyester chips flow through the multiple screening mesh plates 2 in sequence for screening, and the screened multi-level particles are discharged from the final discharge port 5 and the multiple screening discharge ports 6 respectively, so as to achieve the purpose of screening the polyester chips. Among them, in this embodiment, the number of the screening mesh plates 2 is three, so that the polyester chips are screened into four levels.

[0024] The feed port 4 is located on one side of the top wall of the box body 1, and the final discharge port 5 is located on the bottom side of the side wall of the box body 1 connected to the top wall of the box body 1 away from the feed port 4, so as to reasonably arrange the feed port 4 and the final discharge port 5. In order to facilitate feeding, a feed hopper 7 connected to the feed port 4 is provided outside the box body 1.

[0025] In order to better understand this solution, the structure of the drive component 3 and the like will be further optimized below.

[0026] like Figure 1 As shown, according to another embodiment of the utility model, a multi-stage screening device for processing polyester chips, wherein the driving assembly 3 includes a telescope 31 and a transmission frame 32; wherein the telescope 31 has at least one and is fixedly arranged on the outer wall of the box body 1; the transmission frame 32 is connected between one end of each screening mesh plate 2 passing through the outside of the box body 1 and the output end of each telescope 31.

[0027] In this embodiment:

[0028] The telescopic device 31 can be a cylinder, and there are two telescopic devices 31; the two telescopic devices 31 move synchronously to provide power, and drive the multiple screening mesh plates 2 to reciprocate synchronously through the transmission frame 32, so as to ensure that the polyester slices of the flaky particles shake on the screening mesh plates 2 and slide in the screening channel direction, and the polyester slices are efficiently screened. Among them, a telescopic rod arranged along the telescopic direction of the cylinder is also connected between the transmission frame 32 and the outer wall of the box body 1 to improve the stability of the transmission frame 32 during the transmission process.

[0029] Based on the above scheme:

[0030] The transmission frame 32 includes a first connecting bar 321, a second connecting bar 322 and a reinforcing bar 323; wherein the first connecting bar 321 is connected to the output end of each telescope 31 through a connecting block; one second connecting bar 322 is connected between one end of each screening mesh plate 2 that passes through the outside of the box body 1 and the first connecting bar 321; and at least one reinforcing bar 323 is connected between two adjacent second connecting bars 322.

[0031] The transmission frame 32 is mainly composed of a first connecting bar 321, a second connecting bar 322 and a reinforcing bar 323. Its structure is simple and the transmission frame 32 has sufficient structural strength to meet the use requirements; specifically, the first connecting bar 321 is arranged horizontally, the second connecting bars 322 are arranged vertically, the reinforcing bars 323 are arranged obliquely, and the number of reinforcing bars 323 connected between two adjacent second connecting bars 322 is determined according to the length of the second connecting bar 322 and the overall structural strength requirements of the transmission frame 32. For example, the number of reinforcing bars 323 between two adjacent second connecting bars 322 is two, three or four.

[0032] like Figure 2 As shown, according to another embodiment of the utility model, a multi-stage screening device for processing polyester chips, wherein each of the screening discharge ports 6 is connected to the bottom of the corresponding screening mesh plate 2 by a material guide channel 8 formed by a plurality of mounting plates 9 arranged in the box body 1.

[0033] Here, the material guide channel 8 is designed to prevent the materials screened at the bottom of two adjacent screening mesh plates 2 from mixing together and affecting the screening results. Specifically, two mounting plates 9 are arranged at the bottom of each screening mesh plate 2, and the two mounting plates 9 cooperate with the two side walls of the box body 1 to form a square material guide channel 8 at the bottom of the screening mesh plate 2, so that the materials screened from the bottom of the screening mesh plate 2 are discharged through the corresponding material guide channel 8 to the corresponding screening outlet 6.

[0034] like Figure 1 and Figure 2As shown, according to another embodiment of the utility model, a multi-stage screening device for processing polyester chips is provided, wherein both ends of each screening mesh plate 2 arranged along the screening channel direction are formed with a receiving plate 10 coplanar therewith, and the two matching receiving plates 10 in two adjacent screening mesh plates 2 are arranged in an up-and-down staggered manner.

[0035] Among them, the arrangement of the receiving plate 10 is, on the one hand, to continuously shake the receiving plate 10 located on the front side of the screening mesh plate 2 before the polyester chips slide onto the screening mesh plate 2 for screening, which is conducive to sliding onto the screening mesh plate 2 for efficient screening; on the other hand, it is to enable the polyester chips intercepted on the previous screening mesh plate 2 to be completely introduced into the next screening mesh plate 2 for screening.

[0036] At the same time, the two adjacent screening mesh plates 2 form a falling distance in the vertical direction, so the polyester chips intercepted on the previous screening mesh plate 2 slide onto the receiving plate 10 on its rear side and then fall onto the receiving plate 10 on the front side of the next screening mesh plate 2, rolling continuously, and finally sliding onto the next screening mesh plate 2 for screening.

[0037] According to another embodiment of the utility model, in the multi-stage screening device for processing polyester chips, the sieve holes on the plurality of screening mesh plates 2 are enlarged sequentially along the material guiding direction of the screening channel.

[0038] In this embodiment:

[0039] The mesh holes on the three screening mesh plates 2 increase in size from the feed port 4 toward the final discharge port 5. The polyester chips fall onto the first screening mesh plate 2. The first screening mesh plate 2 separates the chip powder mixed in the polyester chips during the reciprocating sliding process. The polyester chips then fall onto the second screening mesh plate 2 and the third screening mesh plate 2 in turn to screen small particles of polyester chips of different grades in turn, and the larger particles of polyester chips are discharged from the final discharge port 5.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-stage screening device for polyester chip processing, characterized in that: include: A box body, wherein the box body has a feed inlet, a final discharge outlet, and a plurality of screening discharge outlets; The screening mesh plate has multiple screening mesh plates, and the multiple screening mesh plates are connected end to end in sequence in the box body to form a screening channel connected between the feed port and the final discharge port. The multiple screening mesh plates are arranged obliquely in the same direction and the lower ends of the screening mesh plates are arranged toward the final discharge port. The multiple screening discharge ports correspond to the bottom of the multiple screening mesh plates one by one, and each screening mesh plate freely extends to the outside of the box body along both sides of the screening channel; A driving assembly is arranged outside the box and is connected to one end of each screening mesh plate that passes through the box and is used to drive multiple screening mesh plates to slide back and forth synchronously.

2. A multi-stage screening device for polyester chip processing according to claim 1, characterized in that: The drive assembly comprises: An expander, at least one of which is fixedly arranged on the outer wall of the box body; A transmission frame is connected between one end of each screening mesh plate passing through the outside of the box and an output end of each telescoping device.

3. A multi-stage screening device for polyester chip processing according to claim 2, characterized in that: The transmission frame comprises: A first connecting bar, wherein the first connecting bar is connected to an output end of each retractor via a connecting block; A second connecting bar, wherein one of the second connecting bars is connected between one end of each sieve plate passing through the outside of the box and the first connecting bar; A reinforcing strip, wherein at least one reinforcing strip is connected between two adjacent second connecting strips.

4. The multi-stage screening device for polyester chip processing according to claim 1, characterized in that: Each of the screening discharge ports is connected to the bottom of the corresponding screening mesh plate through a material guiding channel formed by a plurality of mounting plates arranged in the box body.

5. The multi-stage screening device for polyester chip processing according to claim 1, characterized in that: Both ends of each screening mesh plate arranged along the screening channel direction are formed with material receiving plates coplanar therewith, and the two matching material receiving plates in two adjacent screening mesh plates are arranged in an up-and-down staggered manner.

6. The multi-stage screening device for polyester chip processing according to claim 1, characterized in that: The feed inlet is located on one side of the top wall of the box body, and the final discharge outlet is located on the bottom side of the side wall of the box body connected to the top wall of the box body away from the feed inlet.

7. A multi-stage screening device for polyester chip processing according to claim 6, characterized in that: A feeding hopper connected with the feeding port is arranged outside the box.

8. The multi-stage screening device for polyester chip processing according to claim 1, characterized in that: The sieve holes on the plurality of sieve mesh plates are enlarged in sequence along the material guiding direction of the sieve channel.

9. The multi-stage screening device for polyester chip processing according to claim 1, characterized in that: A drop distance is formed between two adjacent screening mesh plates along the vertical direction.

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