Polylactic acid melt filtering device

Abstract

The utility model relates to the technical field of polylactic acid processing, and discloses a polylactic acid melt filtering device which comprises a box body, and a cavity is formed in the box body; the feeding opening is formed in the top of the box body, and the feeding opening is fixedly connected with the box body; the material screening opening is formed in the bottom of the box body, and the material screening opening is fixedly connected with the box body; the crushing assembly is arranged in the box body, the crushing assembly is used for crushing the melt, the crushing assembly comprises a driving motor, a driving shaft and a hammer rod, the driving shaft is arranged in the box body, the driving shaft is rotationally connected with the box body, the driving motor is arranged outside the box body, the driving motor is fixedly connected with one end of the box body, and the hammer rod is arranged in the box body. One end of the driving shaft is fixedly connected with an output shaft of the driving motor, the hammer rod array is arranged on the driving shaft, polylactic acid melt is crushed to different degrees by the hammer rods through cooperation of internal parts of the crushing assembly, and the polylactic acid melt can reach the qualified standard through filtration, so that the processing steps are reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the processing technical field of polylactic acid, concretely relates to a polylactic acid melt filtering device. BACKGROUND

[0002] Polylactic acid is a new type of biodegradable material, which is made of starch raw materials extracted from renewable plant resources (such as corn). The starch raw material is obtained by saccharification to obtain glucose, and then fermented by glucose and certain strains to obtain high-purity lactic acid, and then synthesized by chemical synthesis method to obtain polylactic acid with certain molecular weight.

[0003] The document with the publication number (CN118831364A) discloses a polylactic acid melt filter, which comprises a filter cylinder body provided with a filter inner cavity, and further comprises: a plurality of filter core units installed in the filter inner cavity, comprising a filter core body, a screw rod rotatably installed in the filter core body through a transmission assembly; a plurality of plug-in cores arranged in the filter inner cavity and located at the polylactic acid melt retention area.

[0004] The above-mentioned device can improve the outflow efficiency of the polylactic acid melt after filtering in the filter core unit, and reduce the retention time of the melt outside the filter core body; the plug-in core can reduce the volume of the retention area, and avoid the performance degradation problem of the polylactic acid melt in the area due to long-time retention caused by the too large retention area.

[0005] The above-mentioned device improves the outflow efficiency of the polylactic acid melt through the cooperation between the plurality of components, but in actual processing, the polylactic acid melt that does not meet the size requirements is taken out for secondary processing and then filtered again, which increases the operation steps and reduces the work efficiency.

[0006] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0007] To solve the secondary processing technical problem of polylactic acid melt, the basic idea of the technical scheme adopted by the utility model is:

[0008] A polylactic acid melt filtering device, comprising a box body, a cavity is formed in the box body; a feed inlet is arranged at the top of the box body and fixedly connected with the box body; a screening port is arranged at the bottom of the box body and fixedly connected with the box body; a crushing assembly is arranged in the box body and used for crushing the melt, the crushing assembly comprises a driving motor, a driving shaft and a hammer rod, the driving shaft is arranged in the box body and rotatably connected with the box body, the driving motor is arranged outside the box body and fixedly connected with one end of the box body, one end of the driving shaft is fixedly connected with the output shaft of the driving motor, and the hammer rods are arranged in an array on the driving shaft and in transmission connection with the driving shaft.

[0009] As a preferred embodiment of the utility model, the driving shaft is provided with side plates, the side plates are fixedly connected with the driving shaft, gaps exist between the side plates, and the periphery of each side plate is provided with a plurality of supporting rods, each of which is fixedly connected with the side plate.

[0010] As a preferred embodiment of the utility model, the hammer rods are arranged on each supporting rod, and the hammer rods are arranged intermittently.

[0011] As a preferred embodiment of the utility model, the end of the hammer rod is arc-shaped, a plurality of grooves are arranged on the end of the hammer rod, the grooves are tapered, and the grooves on the end of the hammer rod are symmetrically arranged.

[0012] As a preferred embodiment of the utility model, the other end of the box body is fixedly connected with a fan, a passage is arranged in the middle of the driving shaft, a through hole is arranged in the side wall of the driving shaft, a filter screen is arranged in the through hole, and the passage in the middle of the driving shaft is rotatably connected with the air outlet of the fan.

[0013] As a preferred embodiment of the utility model, the inner wall of the box body is symmetrically provided with cleaning blocks, the cleaning blocks are fixedly connected with the box body, and cleaning brushes are arranged on the cleaning blocks in an array.

[0014] As a preferred embodiment of the utility model, the inside of the feeding port is symmetrically provided with baffles, each baffle is fixedly connected with the inner wall of the feeding port, each baffle is arranged in an inclined manner, and the inclined directions of the baffles are opposite to each other.

[0015] As a preferred embodiment of the utility model, the end of the screening port is arc-shaped, and the curvature of the end of the screening port is consistent with the inner cavity of the box body.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The polylactic acid melt filtering device, through the cooperation of the internal components of the crushing assembly, the hammer rods crush the polylactic acid melt to different degrees, and the polylactic acid melt can meet the qualified standard after being filtered, in the filtering process, the polylactic acid melt can be crushed, the polylactic acid melt that does not meet the size is directly crushed again and then filtered, without taking out the polylactic acid melt, crushing and then putting into the filtering, reducing the processing steps and improving the work efficiency.

[0018] 2. The polylactic acid melt filtering device, the hammer rods are initially affected by gravity and move in a swinging trajectory under the driving of the driving shaft, at this time, the polylactic acid melt at the bottom end of the box body is stirred by the hammer rods, the polylactic acid melt that meets the requirements is screened out from the bottom end of the screening port, and the hammer rods crush the polylactic acid melt at the bottom end of the box body.

[0019] 3. The polylactic acid melt filtering device, when the driving motor gives the rotating speed of the driving shaft is enough, the hammer rod is thrown away by centrifugal force and rotates at a fixed angle, at this time the hammer rod high speed crushes the remaining polylactic acid melt.

[0020] 4. The polylactic acid melt filtering device, the hammer rods are intermittently arranged between the hammer rods, the polylactic acid melt is intermittently crushed, and continuous crushing is avoided to avoid that the polylactic acid melt is too fine.

[0021] 5. The polylactic acid melt filtering device, the tapered grooves formed in the end of the hammer rod push and cut the polylactic acid melt between the tapered grooves when the polylactic acid melt is extruded, and the problem that the polylactic acid melt is extruded into a cake shape when crushed by a plane is avoided.

[0022] 6. The polylactic acid melt filtering device, the fan sends external air into the channel in the middle of the driving shaft through the air outlet, the external air is discharged from the through hole on the driving shaft, the temperature in the box body is reduced, long-time work is avoided to cause the temperature in the box body to continuously rise, and the polylactic acid melt is avoided to melt.

[0023] 7. The polylactic acid melt filtering device, the wind blown by the fan scatters the polylactic acid melt in the box body, the polylactic acid melt is avoided to accumulate in the corners in the box body, the polylactic acid melt is facilitated to be crushed by the hammer rod, and the crushing efficiency is improved.

[0024] 8. The polylactic acid melt filtering device, the hammer rod is in contact with the cleaning block when moving, the cleaning brush on the cleaning block is in friction with the surface of the hammer rod, the cleaning block removes the polylactic acid melt adhered to the surface of the hammer rod by friction, and the influence of too much polylactic acid melt adhered to the hammer rod on crushing of the hammer rod is avoided.

[0025] 9. The polylactic acid melt filtering device, manpower sends the polylactic acid melt into the box body from the feeding port, the polylactic acid melt is blocked and buffered by the symmetrically arranged baffles in the feeding port when passing through the feeding port, too much polylactic acid melt is avoided to enter the box body at one time, the polylactic acid melt is avoided to accumulate in the box body, the polylactic acid melt is avoided to be finely processed by the device, the polylactic acid melt driven to be thrown up by the centrifugal force is blocked by the baffles at the feeding port, and the influence of the polylactic acid melt backflow on the external environment is avoided.

[0026] The specific implementation manners of the polylactic acid melt filtering device will be further described in detail in combination with the accompanying drawings. DRAWINGS

[0027] In the drawings:

[0028] Figure 1 It is a three-dimensional schematic view of the polylactic acid melt filtering device;

[0029] Figure 2 It is a sectional view of the polylactic acid melt filtering device;

[0030] Figure 3 It is the broken component structure schematic view of the utility model;

[0031] Figure 4 It is the hammer rod upper structure schematic view of the utility model. Figure 3 It is the broken component structure schematic view of the utility model;

[0032] Figure 5 It is the hammer rod upper structure schematic view of the utility model.

[0033] In the figure: 1, box body;11, feed inlet;12, sieve material port;2, driving motor;21, driving shaft;22, side plate;23, hammer rod;3, fan;4, cleaning block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, and the following embodiment is used to illustrate the utility model.

[0035] Please refer to Figures 1-5 A polylactic acid melt filtering device, including box body 1, the cavity is set up in box body 1;Feed inlet 11, feed inlet 11 is set at the top of box body 1, and feed inlet 11 is fixedly connected with box body 1;Sieve material port 12, sieve material port 12 is set at the bottom of box body 1, and sieve material port 12 is fixedly connected with box body 1;Broken component, broken component is set in box body 1, and broken component is used to break melt, and broken component includes driving motor 2, driving shaft 21 and hammer rod 23, driving shaft 21 is set in the inside of box body 1, and driving shaft 21 is rotatably connected with box body 1, driving motor 2 is set outside box body 1, and driving motor 2 is fixedly connected with one end of box body 1, one end of driving shaft 21 is fixedly connected with the output shaft of driving motor 2, and hammer rod 23 is arrayed on driving shaft 21, and hammer rod 23 is transmissionally connected with driving shaft 21, through the cooperation of the internal parts of broken component, hammer rod 23 breaks polylactic acid melt to different degrees, and filtering makes polylactic acid melt can reach qualified standard, in the process of filtering, polylactic acid melt can be crushed, and polylactic acid melt that does not meet the size is directly crushed again and then filtered, without taking out polylactic acid melt, crushing and then filtering, reduce processing steps, improve work efficiency.

[0036] The side plate 22 is fixedly connected with the driving shaft 21, and gaps exist between the side plates 22. The periphery of the side plate 22 is provided with a plurality of support rods, each of which is fixedly connected with the side plate 22. The hammer rods 23 are arranged on each support rod, and the hammer rods 23 are arranged intermittently. The hammer rods 23 are rotatably connected with the support rods. The driving motor 2 drives the driving shaft 21 to rotate through the output shaft. The driving shaft 21 drives the side plate 22 to rotate. The side plate 22 drives each support rod to move. The support rod drives the hammer rod 23 to move. The hammer rod 23 is initially affected by gravity and moves in a swinging trajectory under the driving of the driving shaft 21. At this time, the polylactic acid melt at the bottom end of the box body 1 is stirred by the hammer rod 23. The polylactic acid melt meeting the requirements is screened out from the sieve port 12 at the bottom end. At the same time, the hammer rod 23 extrudes and crushes the polylactic acid melt at the bottom end of the box body 1. When the rotating speed of the driving shaft 21 driven by the driving motor 2 is sufficient, the hammer rod 23 is thrown away by the centrifugal force and rotates at a fixed angle. At this time, the hammer rod 23 high-speed crushes the remaining polylactic acid melt. At the same time, the hammer rods 23 are arranged intermittently, so that the polylactic acid melt is intermittently crushed, avoiding that continuous crushing causes the polylactic acid melt to be too fine.

[0037] The end of the hammer rod 23 is arc-shaped. A plurality of grooves are arranged on the end of the hammer rod 23. The grooves are conical. The grooves on the end of the hammer rod 23 are symmetrically arranged. When the conical grooves on the end of the hammer rod 23 extrude the polylactic acid melt, the polylactic acid melt is pushed and cut between the conical grooves, avoiding the problem that the polylactic acid melt is extruded into a cake shape when crushed by a plane.

[0038] The other end of the box body 1 is fixedly connected with the fan 3. The middle part of the driving shaft 21 is provided with a channel. The side wall of the driving shaft 21 is provided with a through hole. The through hole is provided with a filter screen. The channel in the middle part of the driving shaft 21 is rotatably connected with the air outlet of the fan 3. The fan 3 is started when the driving motor 2 works. The fan 3 sends the external air into the channel in the middle part of the driving shaft 21 through the air outlet. The external air is discharged from the through hole on the driving shaft 21. The temperature in the box body 1 is reduced, avoiding that the temperature in the box body 1 continuously rises due to long-time work, causing the polylactic acid melt to melt. At the same time, the wind blown by the fan 3 scatters the polylactic acid melt in the box body 1, avoiding that the polylactic acid melt is accumulated in the corners of the box body 1, facilitating the crushing of the polylactic acid melt by the hammer rod 23, and improving the crushing efficiency.

[0039] The inner wall of the box body 1 is symmetrically provided with a cleaning block 4. The cleaning block 4 is fixedly connected with the box body 1. A plurality of cleaning brushes are arranged on the cleaning block 4. The cleaning brushes are arranged intermittently. The hammer rod 23 contacts the cleaning block 4 when moving. The cleaning brushes on the cleaning block 4 rub the surface of the hammer rod 23. The cleaning block 4 removes the adhered polylactic acid melt by rubbing the surface of the hammer rod 23, avoiding that the polylactic acid melt adhered on the hammer rod 23 affects the crushing of the hammer rod 23.

[0040] The inside of the feed inlet 11 is symmetrically provided with baffles, each of which is fixedly connected with the inner wall of the feed inlet 11, and each of which is obliquely arranged, the oblique directions of the baffles being opposite to each other, the end of the screening port 12 is arc-shaped, the arc of the end of the screening port 12 is consistent with the internal cavity of the box body 1, the polylactic acid melt is sent into the box body 1 from the feed inlet 11 by manpower, the polylactic acid melt is blocked by the symmetrically arranged baffles in the feed inlet 11 when passing through the feed inlet 11, and is buffered, so that the polylactic acid melt is not excessively entered into the box body 1 at one time, the polylactic acid melt is accumulated in the box body 1, the device cannot finely process the polylactic acid melt, and the polylactic acid melt driven to be thrown up by the centrifugal force is blocked by the baffles at the feed inlet 11, so that the backflow of the polylactic acid melt does not affect the external environment.

[0041] Working principle: manpower will be sent into the box 1 from the feeding port 11 polylactic acid melt, polylactic acid melt through the feeding port 11 is blocked by the baffle in the feeding port 11, buffering, avoid polylactic acid melt one-time into the box 1 too much, polylactic acid melt is accumulated in the box 1, the device cannot be fine processing of polylactic acid melt, drive motor 2 through the output shaft drives the driving shaft 21 rotation, driving shaft 21 driving side plate 22 rotation, side plate 22 drive each support rod moves, support rod driving hammer 23 moves, hammer 23 initially due to gravity influence, under the driving of driving shaft 21, the swing type motion trajectory, the polylactic acid melt at the bottom of the box 1 is stirred by hammer 23, the polylactic acid melt meeting the requirements is screened out from the bottom of the sieve port 12, at the same time, the polylactic acid melt at the bottom of the box 1 is crushed by hammer 23, when the driving speed of driving motor 2 to driving shaft 21 is enough, hammer 23 is thrown off by centrifugal force and rotates at a fixed angle, at this time, the high-speed hammer 23 breaks the remaining polylactic acid melt, in the process of filtering, the polylactic acid melt can be crushed, the polylactic acid melt that does not meet the size is directly crushed again and filtered, without taking out the polylactic acid melt, crushing and filtering again, and the polylactic acid melt is thrown out from the sieve port 12 by centrifugal force during rotation, the polylactic acid melt thrown up by centrifugal force is blocked by the baffle at the feeding port 11, avoiding the influence of polylactic acid melt backflow on the external environment, at the same time, the intermittent setting between hammer 23 breaks the polylactic acid melt intermittently, avoiding the continuous crushing of polylactic acid melt, the tapered groove at the end of hammer 23 pushes and cuts the polylactic acid melt when extruding the polylactic acid melt, avoiding the problem that the polylactic acid melt is extruded into a cake shape when broken in plane, the fan 3 is started when the driving motor 2 works, the fan 3 sends the air from the driving shaft 21 middle channel through the air outlet, the external air is discharged from the through hole on the driving shaft 21, the temperature in the box 1 is cooled, avoiding the continuous rising of the temperature in the box 1 caused by long time work, causing the melting of polylactic acid melt, at the same time, the wind blown by fan 3 blows the polylactic acid melt in the box 1, avoiding the polylactic acid melt accumulation in the corner of the box 1, facilitating the crushing of polylactic acid melt by hammer 23, improving the crushing efficiency, hammer 23 moves and contacts with cleaning block 4, the cleaning brush on cleaning block 4 rubs the surface of hammer 23, cleaning block 4 removes the polylactic acid melt adhered to the surface of hammer 23 by rubbing, avoiding the influence of too much polylactic acid melt adhered to hammer 23 on the crushing of hammer 23.

[0042] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A polylactic acid melt filtration device, characterized by, The utility model relates to a kind of melt breaking machine, including: Box (1), cavity is opened in box (1); Feed inlet (11), feed inlet (11) is arranged at the top of box (1), and feed inlet (11) is fixedly connected with box (1); Screening port (12), screening port (12) is arranged at the bottom of box (1), and screening port (12) is fixedly connected with box (1); Crushing assembly, crushing assembly is arranged in box (1), and crushing assembly is used to break melt, and crushing assembly includes driving motor (2), driving shaft (21) and hammer rod (23), driving shaft (21) is arranged in the inside of box (1), and driving shaft (21) is rotatably connected with box (1), driving motor (2) is arranged outside box (1), and driving motor (2) is fixedly connected with one end of box (1), one end of driving shaft (21) is fixedly connected with the output shaft of driving motor (2), and hammer rod (23) is arrayed on driving shaft (21), and hammer rod (23) is drivingly connected with driving shaft (21).

2. The polylactic acid melt filtration device of claim 1, wherein, The side plate (22) is fixedly connected with the driving shaft (21), and there is a gap between the side plates (22), and the periphery of the side plate (22) is provided with a plurality of support rods, each of which is fixedly connected with the side plate (22).

3. The polylactic acid melt filtration device of claim 2, wherein, The hammer rod (23) is arrayed on each support rod, and the hammer rods (23) are intermittently arranged, and the hammer rod (23) is rotatably connected with the support rod.

4. The polylactic acid melt filtration device of claim 1, wherein, The end of the hammer rod (23) is arc-shaped, and a plurality of grooves are arrayed on the end of the hammer rod (23), the grooves are tapered, and the grooves on the end of the hammer rod (23) are symmetrically arranged.

5. The polylactic acid melt filtration device of claim 1, wherein, The other end of the box (1) is fixedly connected with a fan (3), a passage is formed in the middle of the driving shaft (21), a through hole is formed in the side wall of the driving shaft (21), a filter screen is installed in the through hole, and the passage in the middle of the driving shaft (21) is rotatably connected with the air outlet of the fan (3).

6. The polylactic acid melt filtration device of claim 1, wherein, The inner wall of the box (1) is symmetrically provided with a cleaning block (4), the cleaning block (4) is fixedly connected with the box (1), and a plurality of cleaning brushes are arrayed on the cleaning block (4).

7. The polylactic acid melt filtration device of claim 1, wherein, The inside of the feed inlet (11) is symmetrically provided with a baffle, each baffle is fixedly connected with the inner wall of the feed inlet (11), each baffle is inclined, and the inclination directions of the baffles are opposite.

8. The polylactic acid melt filtration device of claim 1, wherein, The end of the screening port (12) is arc-shaped, and the curvature of the end of the screening port (12) is consistent with the inner cavity of the box (1).

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