Double-screw plastic granulator

Abstract

The utility model provides a double-screw plastic granulator which comprises a double-screw plastic granulator body, a raw material adding hopper is fixedly arranged at the top of the double-screw plastic granulator body, and a drying mechanism is arranged on the raw material adding hopper; the drying mechanism comprises a drying cylinder, a power motor, a first rotating shaft, a connecting frame, a second rotating shaft, a conveying auger, an air heater and a hot air pipe. The output end of the power motor is fixedly connected with the first rotating shaft, the connecting frame is fixedly installed between the first rotating shaft and the second rotating shaft, the conveying auger is fixedly installed at the bottom of the second rotating shaft, the air heater is fixedly installed at the top of the drying cylinder and fixedly connected with the hot air pipe, and the connecting sleeve is fixedly arranged on the hot air pipe. The connecting sleeve is in sealing contact with the first rotating shaft and the second rotating shaft, and the hot air pipe penetrates through the connecting sleeve. The double-screw plastic granulator provided by the utility model can be used for efficiently drying raw materials and ensuring the production quality of plastic products.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of double screw granulator relates to a double screw plastic granulator. BACKGROUND

[0002] In the production of plastic particles, generally will select the double screw extruder to make, the double screw granulator is formed by two mutually helical but opposite direction screw, the two screw form a mixing area between, here, raw materials are heated, melted, mixed and extruded, finally through the extrusion hole forms the granular product The core component of double screw air cooling granulator is two screws, they rotate synchronously through the driving device, this design can increase the residence time of raw materials in the equipment, and provide better mixing effect, double screw air cooling granulator has high yield, high efficiency, uniform mixing and good finished product particle shape and other advantages, therefore, it has been widely applied in the granule manufacturing process.

[0003] At present, a kind of double screw extrusion granulator with a kind of Chinese patent with announcement number CN222080005 U is disclosed on market, including granulator, including following structure: hopper, the bottom discharge opening of the hopper is connected with the feed inlet of granulator;Auxiliary box, the inner side of the auxiliary box is fixed with storage area, the bottom of the auxiliary box is fixed with auger pipe, the discharge end of the auger pipe is fixed with guide pipe, the storage area in auxiliary box is used to fill granulating raw materials, the feed inlet of interface and auger pipe is matched, the granulating raw materials in storage area are introduced into auger pipe, the granulating raw materials in guide pipe gradually increase, under the guidance of guide pipe and butt joint pipe, granulating raw materials in guide pipe are introduced into hopper, the convenience of completing the feeding operation of granulator is improved, the problem of inconvenient feeding operation in the operation of existing granulator is solved.But in the process of actual use, the raw material of granulation is easy to absorb moisture in air and be damp, and the performance of plastic product made of damp raw material will be significantly reduced, thereby being not conducive to the production of high-quality plastic products. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of double screw plastic granulator, to solve the problem that plastic raw material is not convenient to dry before granulation, affect granulation quality.

[0005] To solve the above technical problems, the utility model provides a kind of double screw plastic granulator, including: double screw plastic granulator body, the top of double screw plastic granulator body is fixedly provided with raw material adding hopper, the raw material adding hopper is provided with drying mechanism;

[0006] The drying mechanism includes drying cylinder, power motor, pivot one, connecting frame, pivot two, conveying auger, hot air machine and hot air pipe;

[0007] The output end of the power motor is fixedly connected to the first rotating shaft. The connecting frame is fixedly installed between the first rotating shaft and the second rotating shaft. The conveying auger is fixedly installed at the bottom of the second rotating shaft. The hot air blower is fixedly installed at the top of the drying cylinder. The hot air blower is fixedly connected to the hot air pipe. A connecting sleeve is fixedly installed on the hot air pipe. The connecting sleeve is in sealed contact with the first rotating shaft and the second rotating shaft. The hot air pipe passes through the connecting sleeve.

[0008] A further feature of this invention is that the drying mechanism includes a top frame, a stirring blade, and an air outlet pipe. The top frame is fixedly installed on the top of the drying cylinder, the power motor is fixedly installed on the top frame, the stirring blade is fixedly installed on the outside of the second rotating shaft, and the air outlet pipe is fixedly installed on the outside of the second rotating shaft.

[0009] A further feature of this invention is that the drying mechanism includes a connecting rod, a branch rod, and a fixing screw. The connecting rod is fixedly connected to the outside of the drying cylinder, the branch rod is fixedly installed on the raw material adding hopper, the connecting rod is engaged with the branch rod, the fixing screw is threaded onto the branch rod, and a fixing screw groove is provided on the connecting rod. The fixing screw is threadedly connected to the fixing screw groove.

[0010] By adopting the above technical solution, it is convenient to disassemble and assemble the drying mechanism.

[0011] A further feature of this invention is that a feeding hopper is fixedly provided at the top of the drying cylinder.

[0012] A further feature of this invention is that the bottom of the first rotating shaft is provided with a bottom groove, the top of the second rotating shaft is provided with a flow hole, and the air outlet pipe is connected to the flow hole.

[0013] By adopting the above technical solution, the circulation of hot air is facilitated.

[0014] A further feature of this invention is that a perforated plate is fixedly installed at the bottom of the air outlet pipe.

[0015] By adopting the above technical solution, raw materials are prevented from entering the air outlet pipe.

[0016] A further feature of this invention is that a sealing gasket is fixedly provided on the inner side of the connecting sleeve, and the first rotating shaft and the second rotating shaft are in sealing contact with the sealing gasket.

[0017] A further feature of this invention is that a discharge hole is provided at the bottom of the drying cylinder, and a conveying auger is located inside the discharge hole.

[0018] A further feature of this invention is that the drying cylinder is located directly above the raw material adding hopper.

[0019] By adopting the above technical solution, it is convenient to add the dried raw materials into the raw material feeding hopper.

[0020] A further feature of this invention is that the connecting frame has an L-shaped structure.

[0021] Compared with the prior art, this utility model provides a twin-screw plastic granulator. By starting the power motor and hot air fan, hot air can be evenly discharged into the interior of the raw material from the rotating air outlet pipe. As the stirring blades agitate the raw material and the conveying auger lifts the raw material, the raw material can be dried efficiently, ensuring the quality of plastic product production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0024] Figure 3 yes Figure 1 Enlarged view of section A;

[0025] Figure 4 yes Figure 2 Enlarged view of section B;

[0026] Figure 5 yes Figure 2 Enlarged view of section C.

[0027] The components include: 1. Twin-screw plastic granulator body; 2. Raw material feeding hopper; 3. Drying drum; 4. Connecting rod; 5. Branch rod; 6. Fixed screw; 7. Top frame; 8. Power motor; 9. Rotating shaft one; 10. Connecting frame; 11. Rotating shaft two; 12. Conveying auger; 13. Hot air blower; 14. Hot air pipe; 15. Agitator blade; 16. Air outlet pipe; and 17. Feeding hopper. Detailed Implementation

[0028] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the twin-screw plastic granulator proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0029] Reference Figures 1-5 The present invention provides a twin-screw plastic granulator, comprising: a twin-screw plastic granulator body 1, a raw material feeding hopper 2 fixedly provided on the top of the twin-screw plastic granulator body 1, and a drying mechanism provided on the raw material feeding hopper 2. It should be noted that the drying mechanism can dry the plastic raw material to ensure the quality of plastic product production.

[0030] The drying mechanism includes a drying cylinder 3, a power motor 8, a rotating shaft 1 9, a connecting frame 10, a rotating shaft 2 11, a conveying auger 12, a hot air blower 13, and a hot air pipe 14;

[0031] The output end of the power motor 8 is fixedly connected to the rotating shaft 9. The connecting frame 10 is fixedly installed between the rotating shaft 9 and the rotating shaft 11. The conveying auger 12 is fixedly installed at the bottom of the rotating shaft 11. The hot air blower 13 is fixedly installed at the top of the drying cylinder 3. The hot air blower 13 is fixedly connected to the hot air pipe 14. A connecting sleeve is fixedly installed on the hot air pipe 14. The connecting sleeve is in sealed contact with the rotating shaft 9 and the rotating shaft 11. The hot air pipe 14 passes through the connecting sleeve.

[0032] Through the aforementioned drying mechanism, the power motor 8 and hot air fan 13 are started, and the hot air is discharged through the air outlet 16. The power motor 8 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the rotating shaft 11 to rotate through the connecting frame 10. The rotating shaft 11 drives the conveying auger 12 to rotate. The rotating conveying auger 12 can lift the plastic raw materials inside the drying cylinder 3. Thus, with the addition of hot air, the plastic raw materials can be dried effectively.

[0033] Specifically, the drying mechanism also includes a top frame 7, a stirring blade 15, and an air outlet pipe 16. The top frame 7 is fixedly installed on the top of the drying cylinder 3, the power motor 8 is fixedly installed on the top frame 7, the stirring blade 15 is fixedly installed on the outside of the rotating shaft 11, and the air outlet pipe 16 is fixedly installed on the outside of the rotating shaft 11.

[0034] Through the aforementioned drying mechanism, the rotating shaft 11 also drives the stirring blade 15 and the air outlet pipe 16 to rotate. The stirring blade 15 can agitate the plastic raw material, and the rotation of the air outlet pipe 16 can make the hot air evenly discharged into the interior of the drying cylinder 3, thus quickly drying the plastic raw material.

[0035] Specifically, the drying mechanism also includes a connecting rod 4, a branch rod 5, and a fixing screw 6. The connecting rod 4 is fixedly connected to the outside of the drying cylinder 3. The branch rod 5 is fixedly installed on the raw material adding hopper 2. The connecting rod 4 and the branch rod 5 are engaged. The fixing screw 6 is threadedly installed on the branch rod 5. A fixing screw groove is opened on the connecting rod 4. The fixing screw 6 is threadedly connected to the fixing screw groove.

[0036] With the drying mechanism described above, when it is necessary to inspect and maintain the drying mechanism in the future, the fixing screw 6 can be rotated to release the limit on the connecting rod 4, and it can be quickly disassembled for inspection and maintenance.

[0037] Specifically, a feeding hopper 17 is fixedly installed on the top of the drying cylinder 3, which facilitates the addition of raw materials.

[0038] Specifically, the bottom of the first rotating shaft 9 is provided with a bottom groove, the top of the second rotating shaft 11 is provided with a flow hole, the air outlet pipe 16 is connected to the flow hole, a sealing gasket is fixedly provided inside the connecting sleeve, and the first rotating shaft 9 and the second rotating shaft 11 are in sealed contact with the sealing gasket. The connecting frame 10 has an L-shaped structure. It should be noted that this can ensure the sealing of the connection and does not affect the rotation of the first rotating shaft 9 and the second rotating shaft 11.

[0039] Specifically, a perforated plate is fixedly installed at the bottom of the air outlet duct 16 to prevent raw materials from entering the air outlet duct 16.

[0040] Specifically, the bottom of the drying cylinder 3 is provided with a discharge hole, and the conveying auger 12 is located inside the discharge hole. The drying cylinder 3 is located directly above the raw material adding hopper 2. It should be noted that this facilitates the addition of the dried raw materials into the raw material adding hopper 2.

[0041] Working principle:

[0042] S1: Add the plastic raw material into the drying drum 3, start the power motor 8 and the hot air fan 13. The hot air fan 13 delivers hot air into the rotating shaft 9 and rotating shaft 11 through the hot air pipe 14 and the connecting sleeve. The delivered hot air is discharged through the air outlet pipe 16. The power motor 8 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the rotating shaft 11 to rotate through the connecting frame 10. The rotating shaft 11 drives the conveying auger 12 to rotate. The rotating conveying auger 12 can lift the plastic raw material inside the drying drum 3. In this way, with the addition of hot air, the plastic raw material can be dried effectively.

[0043] S2: The rotating shaft 11 also drives the stirring blade 15 and the air outlet pipe 16 to rotate. The stirring blade 15 can stir the plastic raw material, and the rotation of the air outlet pipe 16 can make the hot air evenly discharged into the interior of the drying cylinder 3, so that the plastic raw material can be dried quickly.

[0044] S3: After drying, the power motor 8 drives the rotating shaft 9 to rotate in the opposite direction. At this time, the conveying auger 12 can be reversed, and the dried plastic raw material can be discharged from the drying cylinder 3 and enter the twin screw plastic granulator body 1 through the raw material feeding hopper 2 for granulation processing to ensure the quality of plastic product production.

[0045] S4: When the drying mechanism needs to be inspected and maintained later, the fixing screw 6 can be rotated to release the limit on the connecting rod 4, and then the drying cylinder 3 can be pulled to quickly remove it for inspection and maintenance. The operation is convenient.

[0046] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0047] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A twin-screw plastic granulator, characterized in that, Include: Double screw plastic granulator body (1), the raw material adding hopper (2) is fixedly arranged on the top of the double screw plastic granulator body (1), and the drying mechanism is arranged on the raw material adding hopper (2); The drying mechanism includes a drying cylinder (3), a power motor (8), a rotating shaft (9), a connecting frame (10), a rotating shaft (11), a conveying auger (12), a hot air machine (13) and a hot air pipe (14); The power motor (8) is fixedly connected with the rotating shaft (9), the connecting frame (10) is fixedly installed between the rotating shaft (9) and the rotating shaft (11), the conveying auger (12) is fixedly installed at the bottom of the rotating shaft (11), the hot air machine (13) is fixedly installed at the top of the drying cylinder (3), the hot air machine (13) is fixedly connected with the hot air pipe (14), the hot air pipe (14) is fixedly provided with a connecting sleeve, the connecting sleeve is in sealing contact with the rotating shaft (9) and the rotating shaft (11), and the hot air pipe (14) penetrates the connecting sleeve.

2. A twin-screw plastic pelletizer according to claim 1, wherein The drying mechanism further includes a top frame (7), a stirring blade (15) and an air outlet pipe (16), the top frame (7) is fixedly installed at the top of the drying cylinder (3), the power motor (8) is fixedly installed on the top frame (7), the stirring blade (15) is fixedly installed on the outside of the rotating shaft (11), and the air outlet pipe (16) is fixedly installed on the outside of the rotating shaft (11).

3. A twin-screw plastic pelletizer according to claim 1, wherein The drying mechanism further includes a connecting rod (4), a branch rod (5) and a fixed screw rod (6), the connecting rod (4) is fixedly connected with the outside of the drying cylinder (3), the branch rod (5) is fixedly installed on the raw material adding hopper (2), the connecting rod (4) is clamped with the branch rod (5), the fixed screw rod (6) is screwedly installed on the branch rod (5), a fixed screw groove is formed in the connecting rod (4), and the fixed screw rod (6) is screwedly connected with the fixed screw groove.

4. A twin-screw plastic pelletizer according to claim 1, wherein A feeding hopper (17) is fixedly arranged at the top of the drying cylinder (3).

5. A twin-screw plastic pelletizer according to claim 2, wherein A bottom groove is formed in the bottom of the rotating shaft (9), a flow-through hole is formed in the top of the rotating shaft (11), and the air outlet pipe (16) is in communication with the flow-through hole.

6. A twin-screw plastic pelletizer as claimed in claim 2, wherein, A mesh plate is fixedly arranged at the bottom of the air outlet pipe (16).

7. A twin-screw plastic pelletizer as claimed in claim 1, wherein A sealing washer is fixedly arranged in the inside of the connecting sleeve, and the rotating shaft (9) and the rotating shaft (11) are in sealing contact with the sealing washer.

8. A twin-screw plastic pelletizer as claimed in claim 1, wherein A discharging hole is formed in the bottom of the drying cylinder (3), and the conveying auger (12) is located in the discharging hole.

9. A twin-screw plastic pelletizer as claimed in claim 1, wherein The drying cylinder (3) is located directly above the raw material adding hopper (2).

10. A twin screw plastic pelletizer as claimed in claim 1 wherein, The connecting frame (10) is of an L-shaped structure.

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