Biodegradable material modification granulation production line

Abstract

The utility model discloses a biodegradable material modification granulation production line. Comprising a first feeding assembly, a second feeding assembly, a third feeding assembly, a first feeding structure, a second feeding structure, a third feeding structure, a first supplementing bin, a first metering mechanism, a second supplementing bin, a second metering mechanism, a rice bran supplementing bin, a third metering mechanism, a fourth feeding bin, a fourth metering mechanism, an extruder, an air cooling traction conveying device and a pelletizing device. The first feeding assembly is suitable for receiving PBS particle materials, and the second feeding assembly is suitable for receiving PBS particle materials. The second feeding assembly is suitable for receiving PHA powder materials; the third feeding assembly is suitable for receiving rice bran materials; the feeding end of the first feeding structure communicates with a discharging opening of the first feeding assembly. The feeding end of the second feeding structure communicates with a discharging opening of the second feeding assembly. According to the utility model, accurate metering and stable conveying of materials can be realized, and the stability of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of biodegradable material modification granulation production lines, belong to plastic production technical field. BACKGROUND

[0002] At present, with the global environmental problems increasingly serious, plastic pollution has become one of the major challenges facing mankind. In order to cope with this problem, governments and enterprises have proposed a series of solutions, among which biodegradable materials have received extensive attention and research due to their degradable and environmentally friendly characteristics. Although China has made some progress in biodegradable modification granulation technology, there are still some problems to be solved in the actual production and application process:

[0003] Firstly, the mechanical properties of existing biodegradable plastics are poor, which cannot meet the needs of high-end applications. Secondly, due to the sensitivity of degradable materials to shear, temperature and moisture, there are many technical difficulties in the production process: low yield, quality drops seriously after increasing yield; high unit energy consumption, high production cost; unstable product quality, yellow appearance, irregular particle shape, and large internal performance difference. In addition, the production process parameters are difficult to accurately control, resulting in product quality fluctuations and low yield.

[0004] Biodegradable material modification is a key link in the production process of biodegradable materials. Through blending modification, the mechanical properties of the material can be improved, the degradation performance can be improved, and the production cost can be reduced. Therefore, in-depth research and technological innovation on biodegradable material modification granulation production line have important practical significance for promoting the development of biodegradable material industry.

[0005] After searching the existing technology, it is found that the patent with publication number CN217021160U discloses a starch-based degradable material production line. The patent provides the specific structure of the degradable material production line, but it is found that the material metering control is insufficient, which can easily affect the performance of product quality. SUMMARY

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and to provide a biodegradable material modification granulation production line, which can realize accurate metering and stable conveying of materials and improve the stability of products.

[0007] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a biodegradable material modification granulation production line, comprising:

[0008] A first feeding assembly adapted to receive PBS granular material;

[0009] A second feeding assembly adapted to receive PHA powder material;

[0010] a third feeding assembly adapted to receive the rice bran material;

[0011] a first feeding structure, a feeding end of the first feeding structure being in communication with a discharging port of the first feeding assembly;

[0012] a second feeding structure, a feeding end of the second feeding structure being in communication with a discharging port of the second feeding assembly;

[0013] a third feeding structure, a feeding end of the third feeding structure being in communication with a discharging port of the third feeding assembly;

[0014] a first feeding bin, a feeding end of the first feeding bin being in communication with the first feeding assembly through the first feeding structure;

[0015] a first metering mechanism arranged at a discharging end of the first feeding bin;

[0016] a second feeding bin, a feeding end of the second feeding bin being in communication with the second feeding assembly through the second feeding structure;

[0017] a second metering mechanism arranged at a discharging end of the second feeding bin;

[0018] a rice bran feeding bin, a feeding end of the rice bran feeding bin being in communication with the third feeding assembly through the third feeding structure;

[0019] a third metering mechanism arranged at a discharging end of the rice bran feeding bin;

[0020] a fourth feeding bin, a top of the fourth feeding bin being provided with a manual feeding port adapted to feed a modifying additive;

[0021] a fourth metering mechanism arranged at a discharging end of the fourth feeding bin;

[0022] an extruder, the extruder being provided with a first feeding port and a second feeding port in sequence along a material conveying direction, the first feeding port being in communication with the discharging ends of the first metering mechanism and the second metering mechanism respectively, and the second feeding port being in communication with the discharging ends of the third metering mechanism and the fourth metering mechanism respectively;

[0023] an air-cooled traction conveying device, an input end of the air-cooled traction conveying device being arranged at a discharging port of the extruder, the air-cooled traction conveying device being adapted to cool and convey the material extruded from the extruder;

[0024] A cutting device, a feeding end of the cutting device being connected with a discharging end of the air-cooled traction conveying device, the cutting device being adapted to cut the material conveyed by the air-cooled traction conveying device into particles of a preset size;

[0025] A vibrating screening mechanism, a feeding end of the vibrating screening mechanism being connected with a discharging end of the cutting device, the vibrating screening mechanism being adapted to screen the particles cut by the cutting device;

[0026] A finished product bin, a feeding port of the finished product bin being connected with a discharging end of the vibrating screening mechanism through a conveying pipeline.

[0027] Further, a specific structure of a rice bran pretreatment mechanism is provided, the biodegradable material modification and granulation production line further comprising a rice bran pretreatment mechanism, the rice bran pretreatment mechanism comprising:

[0028] A crushing, drying and mixing machine, a feeding port of the crushing, drying and mixing machine being connected with a discharging port of the third feeding assembly;

[0029] A feeding mechanism, a feeding end of the feeding mechanism being connected with a discharging end of the crushing, drying and mixing machine;

[0030] A storage bin, a feeding port of the storage bin being connected with a discharging end of the feeding mechanism;

[0031] A dosing valve, the dosing valve being installed at a discharging end of the storage bin, a discharging end of the dosing valve being connected with a feeding end of the rice bran feeding bin.

[0032] Further, the biodegradable material modification and granulation production line further comprises a side feeder, a discharging end of the side feeder being connected with a second feeding port of the extruder, a feeding end of the side feeder being connected with discharging ends of the third metering mechanism and the fourth metering mechanism respectively.

[0033] Further, a specific type of the first feeding assembly is provided, the first feeding assembly being a ton bag feeding station.

[0034] Further, a specific type of the second feeding assembly is provided, the second feeding assembly being a small bag feeding station.

[0035] Further, specific types of the first feeding structure, the second feeding structure and the third feeding structure are provided, the first feeding structure, the second feeding structure and the third feeding structure all being negative pressure feeders.

[0036] Further, the extruder comprises:

[0037] A driving mechanism, the driving mechanism being provided with an output shaft;

[0038] A transmission connection mechanism, which comprises a safety coupling, one end of the safety coupling being in transmission connection with an output shaft of the driving mechanism;

[0039] A transmission box, an input end of the transmission box being in transmission connection with the other end of the safety coupling;

[0040] A barrel body, which is internally formed with a material conveying channel, the first feeding port and the second feeding port being sequentially arranged on the barrel body along a material conveying direction and being in communication with the material conveying channel;

[0041] At least one screw rod, which is arranged in the material conveying channel, a driving end of the screw rod being in transmission connection with an output end of the transmission box;

[0042] A screen changer, which is mounted on a discharging end of the barrel body.

[0043] Further, the screw rod is two.

[0044] Further, the extruder further comprises a cooling assembly, which is provided with a cooling water inlet and a cooling water outlet;

[0045] The barrel body is provided with cooling water channels on an outer wall thereof, the cooling water channels being in communication with the cooling water inlet and the cooling water outlet respectively.

[0046] Further, a specific structure of an air-cooled traction conveying device is provided, which comprises:

[0047] A conveying mechanism, which has a conveying direction identical to a material conveying direction of the extruder, a feeding end of the conveying mechanism being in connection with a discharging port of the extruder;

[0048] A conveying ventilation cover, which is fixedly arranged above the conveying mechanism, the conveying ventilation cover being provided with a plurality of ventilation openings along the conveying direction;

[0049] A plurality of air supply covers, which are respectively arranged on the corresponding ventilation openings;

[0050] A plurality of cooling fans, which are respectively arranged in the corresponding air supply covers;

[0051] A plurality of control switches, which are respectively electrically connected with the corresponding cooling fans, the control switches being adapted to control start and stop of the cooling fans.

[0052] By adopting the above technical scheme, the extruder has the following beneficial effects:

[0053] In the utility model, the use process is as follows: first, PBS granular material and PHA powder material are respectively placed in the first feeding assembly and the second feeding assembly, then PBS granular material in the first feeding assembly is conveyed to the first material supplementing bin through the first feeding structure, and PHA powder material in the second feeding assembly is conveyed to the second material supplementing bin through the second feeding structure. After PBS granular material in the first material supplementing bin and PHA powder material in the second material supplementing bin are accurately metered through the first metering mechanism and the second metering mechanism, the PBS granular material and the PHA powder material enter the first feeding port of the extruder. Subsequently, rice bran material is fed into the third feeding assembly and is conveyed to the rice bran material supplementing bin through the third feeding structure, and a modified additive is fed into the fourth feeding bin through the manual feeding opening. After rice bran material in the rice bran material supplementing bin and the fourth feeding bin and the modified additive are accurately metered through the third metering mechanism and the fourth metering mechanism, the rice bran material and the modified additive enter the second feeding port of the extruder and are fully mixed with the PBS granular material and the PHA powder material to perform blending modification. After the material is melted, plasticized and pressure built in the extruder, the material is cooled in the air-cooled traction conveying device, is then granulated through the granulating device, is screened through the vibrating screen mechanism, and finally the particles are collected into the finished product bin, so that subsequent packaging and packaging are facilitated.

[0054] In addition, the rice bran pretreatment mechanism provided in the utility model can crush and dry pretreat the rice bran, effectively control the moisture content of the rice bran and improve the product quality. The side feeder can forcibly convey the rice bran material and the modified additive, and ensure that the material uniformly enters the second feeding port of the extruder. The ton bag feeding station and the small bag feeding station are used to feed the PBS granules and the PHA powder respectively, which can adapt to different packaging specifications and improve the feeding efficiency. The use of the negative pressure feeder can effectively prevent dust pollution and improve the production environment.

[0055] In summary, the utility model realizes continuous and stable production of biodegradable material modification and granulation, accurately controls the material ratio through accurate metering, improves the material mixing uniformity through pretreatment and the side feeder, improves the production efficiency and ensures the stability of the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 Structure diagram of the biodegradable material modification and granulation production line of the utility model Figure 1 ;

[0057] Figure 2 Structure diagram of the biodegradable material modification and granulation production line of the utility model Figure 2 ;

[0058] Figure 3 Structure diagram of the biodegradable material modification and granulation production line of the utility model Figure 3 ;

[0059] Figure 4The structure diagram of the extruder of the biodegradable material modification granulation production line Figure 4 ;

[0060] Figure 5 The structure diagram of the extruder of the biodegradable material modification granulation production line Figure 1 ;

[0061] Figure 6 The structure diagram of the extruder of the biodegradable material modification granulation production line Figure 2 ;

[0062] Figure 7 For Figure 1 The local enlarged view of part A in the figure. DETAILED DESCRIPTION

[0063] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawing, the utility model is further explained in detail.

[0064] As Figures 1-7 Indicated, a kind of biodegradable material modification granulation production line, comprising:

[0065] First feeding assembly 1, first feeding assembly 1 is suitable for receiving PBS granular material;

[0066] Second feeding assembly 2, second feeding assembly 2 is suitable for receiving PHA powder material;

[0067] Third feeding assembly, third feeding assembly is suitable for receiving rice bran material;

[0068] First feeding structure 4, the feeding end of first feeding structure 4 is connected with the discharge port of first feeding assembly 1;

[0069] Second feeding structure 5, the feeding end of second feeding structure 5 is connected with the discharge port of second feeding assembly 2;

[0070] Third feeding structure 6, the feeding end of third feeding structure 6 is connected with the discharge port of third feeding assembly;

[0071] First replenishment bin 7, the feeding end of first replenishment bin 7 is connected with first feeding assembly 1 by first feeding structure 4;

[0072] First metering mechanism 8, first metering mechanism 8 is arranged at the discharge end of first replenishment bin 7;

[0073] Second replenishment bin 9, the feeding end of second replenishment bin 9 is connected with second feeding assembly 2 by second feeding structure 5;

[0074] The second metering mechanism 10 is arranged at the discharge end of the second material supplement bin 9.

[0075] The rice bran supplement bin 111 has its feeding end communicated with the discharge end of the third material supplement assembly through the third material feeding structure 6.

[0076] The third metering mechanism 12 is arranged at the discharge end of the rice bran supplement bin 111.

[0077] The fourth material supplement bin 112 is provided at its top with a manual feeding opening adapted to feed the modifying additive.

[0078] The fourth metering mechanism 13 is arranged at the discharge end of the fourth material supplement bin 112.

[0079] The extruder 14 is sequentially provided with a first feeding opening and a second feeding opening along the material conveying direction, the first feeding opening is communicated with the discharge ends of the first metering mechanism 8 and the second metering mechanism 10 respectively, and the second feeding opening is communicated with the discharge ends of the third metering mechanism 12 and the fourth metering mechanism 13 respectively.

[0080] The air-cooled traction conveying device 15 has its input end arranged at the discharge opening of the extruder 14, and is adapted to cool and convey the material extruded from the extruder 14.

[0081] The pelletizing device 16 has its feeding end connected with the discharge end of the air-cooled traction conveying device 15, and is adapted to pelletize the material conveyed by the air-cooled traction conveying device 15 into pellets of a preset size.

[0082] The vibrating screening mechanism 17 has its feeding end connected with the discharge end of the pelletizing device 16, and is adapted to screen the pellets pelletized by the pelletizing device 16.

[0083] The finished product bin 18 has its feeding opening communicated with the discharge end of the vibrating screening mechanism 17 through the conveying pipeline 19.

[0084] In the present embodiment, as shown in Figures 1-3As shown, first, the PBS granular material and the PHA powder material are respectively placed in the first feeding assembly 1 and the second feeding assembly 2, and then the PBS granular material in the first feeding assembly 1 is conveyed to the first feeding bin 7 through the first feeding structure 4, and the PHA powder material in the second feeding assembly 2 is conveyed to the second feeding bin 9 through the second feeding structure 5. After the PBS granular material in the first feeding bin 7 and the PHA powder material in the second feeding bin 9 are accurately metered by the first metering mechanism 8 and the second metering mechanism 10, they enter the first feeding port of the extruder 14. Subsequently, the rice bran material is placed in the third feeding assembly and conveyed to the rice bran feeding bin 111 through the third feeding structure 6, and the modifying agent is placed in the fourth feeding bin 112 manually through the manual feeding port. After the rice bran material in the rice bran feeding bin 111 and the fourth feeding bin 112 and the modifying agent are accurately metered by the third metering mechanism 12 and the fourth metering mechanism 13, they enter the second feeding port of the extruder 14 from the second feeding port of the extruder 14, mix with the PBS granular material and the PHA powder material, and are blended and modified. After the material completes melting, plasticizing and pressure building in the extruder 14, it enters the air-cooled traction conveying device 15 for cooling, and then is granulated by the granulating device 16, screened by the vibrating screen mechanism 17, and finally collected in the finished product bin 18 for subsequent packaging and packaging.

[0085] The formula is PBS granules + PHA powder + rice bran powder + modifying agent. The combination of PBS granules and PHA powder can improve the material performance, the filling of rice bran powder can reduce the cost, and the cellulose in rice bran can improve the mechanical properties of biodegradable materials, and the addition of the modifying agent can promote the mixing of the materials.

[0086] The first metering mechanism 8, the second metering mechanism 10, the third metering mechanism 12 and the fourth metering mechanism 13 are all existing powder metering devices, and their specific structures will not be described herein.

[0087] Specifically, as shown in Figure 3 The biodegradable material modification and granulation production line further comprises a rice bran pretreatment mechanism, and the rice bran pretreatment mechanism comprises:

[0088] A crushing, drying and mixing machine 21, the feeding port of the crushing, drying and mixing machine 21 is connected with the discharging port of the third feeding assembly;

[0089] A feeding mechanism 22, the feeding end of the feeding mechanism 22 is connected with the discharging end of the crushing, drying and mixing machine 21;

[0090] A storage bin 23, the feeding port of the storage bin 23 is connected with the discharging end of the feeding mechanism 22;

[0091] A quantitative feeding valve 24, the quantitative feeding valve 24 is installed at the discharging end of the storage bin 23, and the discharging end of the quantitative feeding valve 24 is connected with the feeding end of the rice bran feeding bin 111.

[0092] In the embodiment, as shown in Figure 3 , first, the third feeding assembly processes the rice bran material in the crushing and drying mixer 21, which crushes and dries the rice bran to meet the process requirements in terms of particle size and moisture content. The crushed and dried rice bran material is transported to the storage bin 23 for temporary storage through the feeding mechanism 22.

[0093] The quantitative feeding valve 24 quantitatively transports the processed rice bran material in the storage bin 23 to the rice bran supplement bin 111 according to the feeding amount set by the process parameters. The setting of the rice bran pretreatment mechanism enables the rice bran material to reach an appropriate physical state before entering the subsequent process, including appropriate particle size, moisture content, and uniformity, which can ensure the dispersion effect when the rice bran material is mixed with PBS and PHA.

[0094] The crushing and drying mixer 21 can be a high-speed mixer, which is a prior art. The embodiment does not repeat the description.

[0095] Specifically, as shown in Figure 1 and Figures 3-5 , the biodegradable material modification and granulation production line further includes a side feeder 25, the discharge end of which is connected to the second feeding port of the extruder 14, and the feeding end of which is connected to the discharge end of the third metering mechanism 12 and the fourth metering mechanism 13, respectively.

[0096] In the embodiment, as shown in Figure 1 , the position close to the first feeding port of the extruder 14 is mainly used for melting PBS and PHA, which requires sufficient melting and mixing. If rice bran and modification aids are added at this position, they may be degraded due to early exposure to high temperature. The shear force at this position is large, which may damage the structure of the rice bran. The main role of the side feeder here is to add rice bran and modification aids at an appropriate position after PBS and PHA are fully melted, which can better control the residence time and mixing degree of these materials, avoid degradation of rice bran and aids due to long residence time at high temperature, and better maintain the physical structure of rice bran and improve the performance of the final product.

[0097] Specifically, as shown in Figure 2 , the first feeding assembly 1 is a ton bag feeding station.

[0098] Specifically, as shown in Figure 2 , the second feeding assembly 2 is a small bag feeding station.

[0099] In the embodiment, as shown in Figure 2As shown, the first feeding assembly 1 adopts a ton bag feeding station structure, which is suitable for feeding large batches of PBS granular materials. The ton bag feeding station is equipped with a special lifting mechanism. The whole bag of materials is lifted to an appropriate height by the lifting mechanism, and then the material is discharged. The bottom of the ton bag feeding station is provided with a anti-blocking device and a vibrator to ensure smooth discharge of the material and prevent bridging.

[0100] The second feeding assembly 2 is a 25kg small bag feeding station, which is suitable for handling smaller batches of PHA powder materials. The small bag feeding station includes a material receiving hopper. The operator pours the 25kg packaged PHA powder into the receiving hopper.

[0101] Specifically, as shown in Figures 2-3 The first feeding structure 4, the second feeding structure 5 and the third feeding structure 6 are all negative pressure feeding machines.

[0102] In this embodiment, as shown in Figures 2-3 The feeding mechanism 22 in the rice bran pretreatment mechanism is also a negative pressure feeding machine.

[0103] The negative pressure feeding machine includes an air pump and a storage cylinder. The storage cylinder is provided with a pneumatic reversing valve. First, the air pump is used to draw air, so that the inlet and the entire storage cylinder are in a certain negative pressure state. The powder particles are sucked into the air flow along with the external gas, and the air and the material are separated in the storage cylinder. After separation, the air pump is closed, and the pneumatic reversing valve is opened to complete the discharge.

[0104] The air pump of the first feeding structure 4 and the second feeding structure 5 is a 5.5kw double-stage vortex air pump.

[0105] Specifically, as shown in Figure 1 and Figure 6 The extruder 14 can have the following structure, including:

[0106] A driving mechanism 31 is provided with an output shaft.

[0107] A transmission connection mechanism 32 includes a safety coupling, one end of which is in transmission connection with the output shaft of the driving mechanism 31.

[0108] A transmission box 33 has an input end in transmission connection with the other end of the safety coupling.

[0109] A barrel body is formed with a material conveying passage inside. The first feeding port and the second feeding port are sequentially arranged on the barrel body along the material conveying direction and are in communication with the material conveying passage.

[0110] Two screws are arranged in the material conveying passage, and the driving ends of the screws are in transmission connection with the output end of the transmission box 33.

[0111] A screen changer 37 is installed on the discharge end of the barrel body.

[0112] Specifically, as shown in Figures 1-2 , the screw is two.

[0113] In this embodiment, as shown in Figure 1 and Figure 6 , the driving mechanism 31 adopts a permanent magnet water-cooled motor, which is connected with the transmission box 33 through a safety coupling in the transmission connection mechanism 32. The transmission box 33 adopts a high torque design, and the torque ratio is greater than 16 to 1, which cooperates with the low speed operation mode to reduce the average value of the shear rate while ensuring sufficient mixing of the material, avoiding degradation of the material due to excessive shear force during processing.

[0114] Two parallel screws are arranged in the barrel body, the driving end of the screw is in transmission connection with the output end of the transmission box 33, and the core shaft of the screw is made by cold rolling process. The material enters the material conveying channel from the first feeding port and the second feeding port in turn, and is conveyed, mixed and plasticized under the action of the double screw.

[0115] The safety coupling can disconnect the transmission in time when the equipment is overloaded, protecting the safety of the equipment.

[0116] According to the characteristics of the degradation material temperature sensitivity, the appropriate screw length is selected to ensure the reasonable residence time, avoiding the degradation of rice bran.

[0117] Specifically, as shown in Figure 1 and Figures 4-5 , the extruder 14 further comprises a cooling assembly 27, which is provided with a cooling water inlet and a cooling water outlet;

[0118] The outer wall of the barrel body is provided with a cooling water channel, which is in communication with the cooling water inlet and the cooling water outlet respectively.

[0119] In this embodiment, as shown in Figure 1 and Figures 4-5 , the extruder 14 further comprises a vacuum exhaust device 26, and the barrel body is provided with an exhaust port. The vacuum exhaust device 26 is provided with an air suction port in communication with the exhaust port. The vacuum exhaust device 26 and the cooling assembly 27 are both prior art, and this embodiment will not be described here.

[0120] Specifically, as shown in Figure 1 and Figure 7 , the air-cooled traction conveying device 15 comprises:

[0121] A conveying mechanism, the conveying direction of the conveying mechanism is the same as the material conveying direction of the extruder 14, and the feeding end of the conveying mechanism is connected with the discharge port of the extruder 14;

[0122] A conveying ventilation cover 152 is fixedly arranged above the conveying mechanism, and is provided with a plurality of ventilation openings in the conveying direction;

[0123] A plurality of air supply covers 153 are respectively arranged on the corresponding ventilation openings;

[0124] A plurality of cooling fans are respectively arranged in the corresponding air supply covers 153;

[0125] A plurality of control switches 154 are respectively electrically connected with the corresponding cooling fans, and are adapted to control the start and stop of the cooling fans.

[0126] In the embodiment, as shown in Figure 1 and Figure 7 When the material is extruded from the discharge port of the extruder 14, the conveying mechanism conveys the material in the horizontal direction, and the material extends in a strip shape during the conveying process. The conveying ventilation cover 152 covers the entire conveying process, and forms a continuous cooling zone through the plurality of ventilation openings, so as to ensure uniform cooling of the material.

[0127] The combination of the air supply cover 153 and the cooling fan forms an independent cooling unit at each ventilation opening. The cold air generated by the cooling fan is guided through the air supply cover 153 and blown to the material in the conveying process through the ventilation opening. The operator can control the start and stop of each cooling unit through the control switch 154, and can control the temperature of the material by adjusting the number of cooling fans in operation.

[0128] According to the characteristics of the degradable material being sensitive to moisture, the air cooling mode is selected to reduce the influence of moisture on the degradable material. At the same time, the gradual cooling mode can avoid the internal stress of the material caused by sudden cooling, and can ensure that the material reaches a suitable hardness before entering the pelletizing device 16, which is beneficial to the subsequent pelletizing process.

[0129] The above-described specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present application. It should be understood that the above-described specific embodiments are only specific embodiments of the present application, and are not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A biodegradable material modification granulation production line, characterized by, The application relates to a PBS / PHA / microwave rice bran composite material production device. The device comprises: a first feeding assembly (1) adapted to receive PBS granular material; a second feeding assembly (2) adapted to receive PHA powder material; a third feeding assembly adapted to receive microwave rice bran material; a first feeding structure (4) with a feeding end communicated with a discharge port of the first feeding assembly (1); a second feeding structure (5) with a feeding end communicated with a discharge port of the second feeding assembly (2); a third feeding structure (6) with a feeding end communicated with a discharge port of the third feeding assembly; a first feeding bin (7) with a feeding end communicated with the first feeding assembly (1) through the first feeding structure (4); a first metering mechanism (8) arranged at a discharge end of the first feeding bin (7); a second feeding bin (9) with a feeding end communicated with the second feeding assembly (2) through the second feeding structure (5); a second metering mechanism (10) arranged at a discharge end of the second feeding bin (9); a microwave rice bran feeding bin (111) with a feeding end communicated with the third feeding assembly through the third feeding structure (6); a third metering mechanism (12) arranged at a discharge end of the microwave rice bran feeding bin (111); a fourth feeding bin (112) provided with a manual feeding port at the top for feeding a modifying additive; a fourth metering mechanism (13) arranged at a discharge end of the fourth feeding bin (112); an extruder (14) provided with a first feeding port and a second feeding port in sequence along a material conveying direction, wherein the first feeding port is communicated with discharge ends of the first metering mechanism (8) and the second metering mechanism (10) respectively, and the second feeding port is communicated with discharge ends of the third metering mechanism (12) and the fourth metering mechanism (13) respectively; an air-cooled traction conveying device (15) provided with an input end at a discharge port of the extruder (14), and adapted to cool and convey material extruded from the extruder (14); a pelletizing device (16) with a feeding end connected with a discharge end of the air-cooled traction conveying device (15), and adapted to cut the material conveyed by the air-cooled traction conveying device (15) into particles with a preset size; a vibrating screening mechanism (17) with a feeding end connected with a discharge end of the pelletizing device (16), and adapted to screen the particles cut by the pelletizing device (16). A finished product bin (18) is connected with the discharge end of the vibrating screen separator (17) through a conveying pipe (19).

2. The biodegradable material modification and granulation production line according to claim 1, wherein, Further comprising a rice bran pretreatment mechanism, which comprises: A crushing and drying mixer (21) is connected with the discharge end of the third feeding assembly; A feeding mechanism (22) is connected with the discharge end of the crushing and drying mixer (21); A storage bin (23) is connected with the discharge end of the feeding mechanism (22); A quantitative feeding valve (24) is installed at the discharge end of the storage bin (23), and the discharge end of the quantitative feeding valve (24) is connected with the feeding end of the rice bran feeding bin (111).

3. The biodegradable material modification and granulation production line according to claim 1, wherein, Further comprising a side feeder (25), the discharge end of which is connected with the second feeding port of the extruder (14), and the feeding end of the side feeder (25) is connected with the discharge end of the third metering mechanism (12) and the fourth metering mechanism (13) respectively.

4. The biodegradable material modification and granulation production line according to claim 1, wherein, The first feeding assembly (1) is a ton bag feeding station.

5. The biodegradable material modification and granulation production line according to claim 1, wherein, The second feeding assembly (2) is a small bag feeding station.

6. The biodegradable material modification and granulation production line according to claim 1, wherein, The first feeding structure (4), the second feeding structure (5) and the third feeding structure (6) are all negative pressure feeders.

7. The biodegradable material modification and granulation production line according to claim 1, wherein, The extruder (14) comprises: A driving mechanism (31) provided with an output shaft; A transmission connecting mechanism (32) comprising a safety coupling, one end of which is in transmission connection with the output shaft of the driving mechanism (31); A transmission box (33) having an input end in transmission connection with the other end of the safety coupling; A barrel body, inside which a material conveying channel is formed, the first feeding port and the second feeding port being sequentially arranged on the barrel body along the material conveying direction and being in communication with the material conveying channel; At least one screw rod, the driving end of which is in transmission connection with the output end of the transmission box (33); A screen changer (37) installed at the discharge end of the barrel body.

8. The biodegradable material modification and granulation production line according to claim 7, wherein, The screw rod is two.

9. The biodegradable material modification granulation production line according to claim 7, characterized in that, the extruder (14) further comprises a cooling assembly (27) provided with a cooling water inlet and a cooling water outlet; the outer wall of the barrel body is provided with cooling water channels which are respectively connected with the cooling water inlet and the cooling water outlet.

10. The biodegradable material modification granulation production line according to claim 1, characterized in that, the air-cooled traction conveying device (15) comprises: a conveying mechanism, the conveying direction of the conveying mechanism is the same as the material conveying direction of the extruder (14), and the feeding end of the conveying mechanism is connected with the discharge port of the extruder (14); a conveying ventilation cover (152) fixedly arranged above the conveying mechanism, the conveying ventilation cover (152) is provided with a plurality of ventilation openings along the conveying direction; a plurality of air supply covers (153) respectively installed on the corresponding ventilation openings; a plurality of cooling fans respectively installed in the corresponding air supply covers (153); a plurality of control switches (154) respectively electrically connected with the corresponding cooling fans, the control switches (154) are adapted to control the start and stop of the cooling fans.

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