Circulating uniform granulator

Abstract

The utility model relates to the field of granulator, and discloses a circulating uniform granulator which comprises a case, a support is fixedly mounted on the inner wall of the top of the case, an extrusion barrel is fixedly mounted at the bottom of the support, a first spiral conveying shaft is rotatably mounted in the extrusion barrel, and a first motor is fixedly mounted on the outer wall of the left side of the extrusion barrel; the output shaft end of the first motor extends into the extrusion barrel and is fixedly connected with the left end of the first spiral conveying shaft, an annular heating cavity is formed in the extrusion barrel, an annular electric heating plate is fixedly installed in the annular heating cavity, and a feeding hopper is fixedly installed at the top of the extrusion barrel. The plastic particle screening device has the following advantages and effects that in the plastic particle production process, plastic particles can be effectively screened, the screened unqualified large-particle-size plastic particles can be conveyed back to the interior of the extrusion barrel to be subjected to melting and particle cutting processing again, and then the purpose of circular and uniform particle cutting is achieved; the production efficiency and the production quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pelletizers, in particular to a circulating uniform pelletizer. Background Art

[0002] A pelletizer is a mechanical material processing equipment used to cut various materials into granules or small blocks. In the process of producing plastic pellets, a plastic pelletizer is needed. After searching, the patent document with the authorization announcement number CN218965860U announced a plastic pelletizer for plastic pellet manufacturing, including an extruder discharge pipe, the right end of the extruder discharge pipe is connected to an extrusion nozzle, and the right side of the outside of the extruder discharge pipe is sleeved with a collar, a screw is installed between the collar and the extruder discharge pipe, the right side of the collar is connected to a body, and an extrusion disk is welded on the left side of the body, a fan is installed at the lower part of the body, and a second support net is welded above the fan, and a first support net is installed on the right side above the second support net. In the utility model, a first supporting net, a third supporting net and a fan are provided. Plastic particles slide downward through the slope formed by the third supporting net and the first supporting net, which helps to extend the falling time. The fan can cool the plastic particles in the falling process, which can effectively prevent the plastic particles from gathering into a ball due to excessive temperature when falling.

[0003] In actual use, it is found that the above-mentioned existing scheme still has at least the following shortcomings: in the pelletizing production process, the plastic particles cannot be screened according to the particle size, and unqualified large-size plastic particles may be mixed in the qualified small-size plastic particles, which reduces the production quality. In addition, the unqualified large-size plastic particles need to be screened out later, which increases the working time and workload, resulting in reduced production efficiency. Therefore, we propose a circulating uniform pelletizer to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a circulating uniform pelletizer, which can effectively screen plastic particles and transport the screened unqualified large-size plastic particles back to the inside of the extruder for re-melting and pelletizing, thereby achieving the purpose of circulating uniform pelletizing and improving production efficiency and production quality.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a circulating uniform pelletizer, comprising a chassis, a bracket is fixedly installed on the top inner wall of the chassis, an extrusion barrel is fixedly installed on the bottom of the bracket, a first spiral feed shaft is rotatably installed in the extrusion barrel, a first motor is fixedly installed on the left outer wall of the extrusion barrel, the output shaft end of the first motor extends into the extrusion barrel and is fixedly connected to the left end of the first spiral feed shaft, an annular heating chamber is provided in the extrusion barrel, an annular electric heating plate is fixedly installed in the annular heating chamber, a feeding hopper is fixedly installed on the top of the extrusion barrel, the top of the feeding hopper extends to the outside of the chassis, the right side of the extrusion barrel is an opening structure, an extrusion disk is fixedly installed on the right side of the extrusion barrel, a plurality of extrusion holes are arranged in an array on the right side wall of the extrusion disk, a discharge port is provided on the bottom inner wall of the chassis, a pelletizing mechanism, a screening mechanism and a circulating conveying mechanism are arranged on the chassis, the pelletizing mechanism is used to cut the extruded strip plastic into plastic particles, the screening mechanism is used to screen the plastic particles, and the circulating conveying mechanism is used to transport the large-size plastic particles back to the feeding hopper.

[0006] The utility model is further configured as follows: the pelletizing mechanism includes an upper horizontal axis, a cutting strip, a motor seat and a second motor; an upper horizontal hole is opened on the right side wall of the chassis; the upper horizontal axis is rotatably mounted on the right side wall of the chassis; the left end of the upper horizontal axis extends into the chassis; the cutting strip is fixedly mounted on the left end of the upper horizontal axis; the cutting strip is in sliding contact with the right side outer wall of the extrusion disk; the motor seat is fixedly mounted on the right side outer wall of the chassis; the second motor is fixedly mounted on the bottom of the motor seat; and the right end of the upper horizontal axis is fixedly connected to the output shaft end of the second motor.

[0007] The utility model is further configured as follows: the screening mechanism includes a screen, a collision block, a lower horizontal shaft, a main pulley, a secondary pulley, a belt, a rubber elastic rod and a rubber elastic ball. The screen is fixedly installed in the chassis and is inclined. The screen is located below the extrusion cylinder. The collision block is fixedly installed at the bottom of the screen. The lower horizontal shaft is rotatably installed in the chassis and is located below the screen. The rubber elastic rod is fixedly installed on the lower horizontal shaft and is located directly below the collision block. The rubber elastic ball is fixedly installed at one end of the rubber elastic rod away from the lower horizontal shaft. Both ends of the lower horizontal shaft extend outside the chassis. The main pulley is fixedly sleeved on the upper horizontal shaft, and the secondary pulley is fixedly sleeved on the right end of the lower horizontal shaft. Both ends of the belt are respectively wound around the main pulley and the secondary pulley.

[0008] The utility model is further configured as follows: the circulating conveying mechanism includes a conveying drum, a second spiral feed shaft, a feed pipe, a discharge pipe, an active bevel gear and a driven bevel gear. The conveying drum is fixedly mounted on the left outer wall of the chassis, the second spiral feed shaft is rotatably mounted in the conveying drum, the feed pipe is fixedly mounted on the left outer wall of the chassis, the feed pipe is located above the screen and is inclined, the left end of the feed pipe is fixedly connected to the right bottom of the conveying drum, the two ends of the feed pipe are respectively connected to the interior of the chassis and the interior of the conveying drum, the discharge pipe is fixedly mounted on the right top of the conveying drum and is inclined, the right end of the discharge pipe is fixedly connected to the feeding hopper, the two ends of the discharge pipe are respectively connected to the interior of the chassis and the interior of the feeding hopper, the active bevel gear is fixedly mounted on the left end of the lower horizontal axis, the bottom end of the second spiral feed shaft extends outside the conveying drum, the driven bevel gear is fixedly mounted on the bottom end of the second spiral feed shaft, and the driven bevel gear is meshed with the active bevel gear.

[0009] The utility model is further configured as follows: a semiconductor refrigerator is fixedly mounted on the rear outer wall of the chassis, and a cooling end of the semiconductor refrigerator extends into the chassis.

[0010] The utility model is further configured as follows: the length of the cut strips is slightly larger than the maximum diameter of the extrusion disc.

[0011] The utility model is further configured as follows: an observation hole located above the screen is opened on the front side wall of the chassis, and an observation mirror is fixedly installed in the observation hole.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model can transport and heat and melt the plastic raw materials by using the extrusion barrel, the first spiral feed shaft, the first motor, the annular electric heating plate, the feeding hopper and the extrusion disc together, so as to extrude the molten plastic raw materials into strips.

[0014] 2. The utility model can cut the extruded strip plastic into granular plastic particles by utilizing a pelletizing mechanism composed of an upper horizontal axis, a cutting strip, a motor seat and a second motor, thereby achieving the purpose of pelletizing.

[0015] 3. The utility model can effectively screen plastic particles by utilizing a screening mechanism composed of a screen, a collision block, a lower horizontal shaft, a main pulley, a secondary pulley, a belt, a rubber elastic rod and a rubber elastic ball, so that unqualified large-size plastic particles are intercepted on the screen and enter the conveying cylinder through the feed pipe, and the required qualified small-size plastic particles are discharged from the discharge port through the sieve holes on the screen.

[0016] 4. The utility model utilizes a circulating conveying mechanism composed of a conveying cylinder, a second spiral conveying shaft, a feeding pipe, a discharging pipe, an active bevel gear and a driven bevel gear to vertically convey the screened unqualified large-size plastic particles back to the inside of the extruder, thereby remelting and pelletizing the unqualified large-size plastic particles, thereby achieving the purpose of circulating uniform pelletizing and improving production efficiency and production quality.

[0017] 5. The utility model can cool down the inside of the chassis by using a semiconductor refrigerator, and then cool down the cut plastic particles to prevent the plastic particles from sticking to each other and affecting the subsequent effective screening of the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0020] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0021] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0022] In the figure, 1, chassis; 2, bracket; 3, extrusion barrel; 4, first spiral feed shaft; 5, first motor; 6, annular electric heating plate; 7, feeding hopper; 8, extrusion disc; 9, extrusion hole; 10, upper horizontal axis; 11, cutting strip; 12, motor seat; 13, second motor; 14, screen; 15, collision block; 16, lower horizontal axis; 17, main pulley; 18, secondary pulley; 19, belt; 20, rubber elastic rod; 21, rubber elastic ball; 22, conveying barrel; 23, second spiral feed shaft; 24, feeding pipe; 25, discharging pipe; 26, active bevel gear; 27, driven bevel gear; 28, discharge port; 29, semiconductor refrigerator; 30, observation mirror. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a circulating uniform pelletizer, including a chassis 1, a bracket 2 is fixedly installed on the top inner wall of the chassis 1, an extrusion barrel 3 is fixedly installed on the bottom of the bracket 2, a first spiral feed shaft 4 is rotatably installed in the extrusion barrel 3, a first motor 5 is fixedly installed on the left outer wall of the extrusion barrel 3, an output shaft end of the first motor 5 extends into the extrusion barrel 3 and is fixedly connected to the left end of the first spiral feed shaft 4, an annular heating chamber is opened in the extrusion barrel 3, an annular electric heating plate 6 is fixedly installed in the annular heating chamber, a feeding hopper 7 is fixedly installed on the top of the extrusion barrel 3, and the top of the feeding hopper 7 extends To the outside of the chassis 1, the right side of the extrusion barrel 3 is an open structure, and an extrusion disc 8 is fixedly installed on the right side of the extrusion barrel 3. A plurality of extrusion holes 9 are arranged in an array on the right side wall of the extrusion disc 8. The first motor 5 is used to control the rotation of the first spiral feed shaft 4. The first spiral feed shaft 4 can be used to transport the plastic raw material to the inside of the extrusion disc 8. The annular electric heating plate 6 can be used to heat and melt the plastic raw material during the transportation of the plastic raw material, so that the molten plastic raw material can be discharged from the extrusion hole 9 in a strip shape. A discharge port 28 is provided on the bottom inner wall of the chassis 1, wherein:

[0025] The chassis 1 is provided with a pelletizing mechanism, a screening mechanism and a circulating conveying mechanism. The pelletizing mechanism is used to cut the extruded strip plastic into plastic pellets. The above-mentioned pelletizing mechanism includes an upper horizontal axis 10, a cutting strip 11, a motor seat 12 and a second motor 13. An upper horizontal hole is opened on the right side wall of the chassis 1. The upper horizontal axis 10 is rotatably mounted on the right side wall of the chassis 1. The left end of the upper horizontal axis 10 extends into the chassis 1. The cutting strip 11 is fixedly mounted on the left end of the upper horizontal axis 10. The cutting strip 11 is in sliding contact with the right side outer wall of the extrusion disk 8. The motor seat 12 is fixedly mounted on the right side outer wall of the chassis 1. The second motor 13 is fixedly mounted on the bottom of the motor seat 12. The right end of the upper horizontal axis 10 is fixedly connected to the output shaft end of the second motor 13. The second motor 13 is used to control the upper horizontal axis 10 and the cutting strip 11 rotate, and the cutting strip 11 can be used to cut the extruded strip plastic into granular plastic. The screening mechanism is used to screen the plastic particles. The above-mentioned screening mechanism includes a screen 14, a collision block 15, a lower horizontal shaft 16, a main pulley 17, a secondary pulley 18, a belt 19, a rubber elastic rod 20 and a rubber elastic ball 21. The screen 14 is fixedly installed in the chassis 1 and is inclined. The screen 14 is located below the extrusion cylinder 3. The collision block 15 is fixedly installed at the bottom of the screen 14. The lower horizontal shaft 16 is rotatably installed in the chassis 1 and is located below the screen 14. The rubber elastic rod 20 is fixedly installed on the lower horizontal shaft 16 and is located directly below the collision block 15. The rubber elastic ball 21 is fixedly installed at the end of the rubber elastic rod 20 away from the lower horizontal shaft 16. Both ends of the lower transverse shaft 16 extend outside the chassis 1, the main pulley 17 is fixedly sleeved on the upper transverse shaft 10, the auxiliary pulley 18 is fixedly sleeved on the right end of the lower transverse shaft 16, and the two ends of the belt 19 are respectively wound around the main pulley 17 and the auxiliary pulley 18. The screen 14 is used to screen the cut granular plastic particles, that is, the unqualified large-size plastic particles are intercepted on the screen 14, and the required qualified small-size plastic particles are discharged from the discharge port 28 through the sieve holes on the screen 14. The transmission effect of the main pulley 17, the auxiliary pulley 18 and the belt 19 can be used to control the lower transverse shaft 16 to drive the rubber elastic rod 20 and the rubber elastic ball 21 to rotate, so that the rubber elastic ball 21 intermittently collides with the collision block 15, so that the screen 14 is affected The collision generates vibration force, thereby improving the screening quality and screening efficiency of plastic particles. It should be added that the total length of the rubber elastic rod 20 and the rubber elastic ball 21 is slightly larger than the vertical spacing between the collision block 15 and the lower horizontal axis 16, thereby ensuring that the rubber elastic ball 21 effectively collides with the collision block 15. The circulating conveying mechanism is used to convey the large-size plastic particles back to the feeding hopper 7. The above-mentioned circulating conveying mechanism includes a conveying cylinder 22, a second spiral feed shaft 23, a feed pipe 24, a discharge pipe 25, an active bevel gear 26 and a driven bevel gear 27. The conveying cylinder 22 is fixedly mounted on the left outer wall of the chassis 1, the second spiral feed shaft 23 is rotatably mounted in the conveying cylinder 22, and the feed pipe 24 is fixedly mounted on the left outer wall of the chassis 1.The feed pipe 24 is located above the screen 14 and is arranged obliquely. The left end of the feed pipe 24 is fixedly connected to the right bottom of the conveying cylinder 22. The two ends of the feed pipe 24 are respectively connected to the inside of the chassis 1 and the inside of the conveying cylinder 22. The discharge pipe 25 is fixedly installed on the right top of the conveying cylinder 22 and is arranged obliquely. The right end of the discharge pipe 25 is fixedly connected to the hopper 7. The two ends of the discharge pipe 25 are respectively connected to the inside of the chassis 1 and the inside of the hopper 7. The active bevel gear 26 is fixedly installed on the left end of the lower horizontal shaft 16. The second spiral conveyor The bottom end of the material shaft 23 extends to the outside of the conveying cylinder 22. The driven bevel gear 27 is fixedly installed at the bottom end of the second spiral feed shaft 23. The driven bevel gear 27 is meshed with the active bevel gear 26. The meshing transmission effect of the driven bevel gear 27 and the active bevel gear 26 can be used to control the rotation of the second spiral feed shaft 23. The rotation of the second spiral feed shaft 23 can be used to vertically convey the screened unqualified large-size plastic particles to the hopper 7, thereby realizing the re-melting and pelletizing of the unqualified large-size plastic particles.

[0026] In this embodiment, a semiconductor refrigerator 29 is fixedly installed on the rear outer wall of the chassis 1, and the cooling end of the semiconductor refrigerator 29 extends into the chassis 1. The semiconductor refrigerator 29 can be used to cool the interior of the chassis 1, and then the cut plastic particles can be cooled to prevent the plastic particles from sticking to each other and affecting the subsequent effective screening of the plastic particles.

[0027] In this embodiment, the length of the cut strips 11 is slightly larger than the maximum diameter of the extrusion disc 8, which can ensure that all the strip-shaped plastics extruded from the extrusion disc 8 can be pelletized.

[0028] In this embodiment, an observation hole is opened on the front side wall of the chassis 1 and is located above the screen 14 . An observation mirror 30 is fixedly installed in the observation hole to facilitate observation of the internal working conditions of the chassis 1 .

[0029] In this embodiment, it should be noted that the first motor 5, the annular electric heating plate 6 and the second motor 13 can be purchased on the market, and their line connection and control methods are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

[0030] Through the above structure, the circulating uniform pelletizer provided by the utility model, during specific operation, starts the annular electric heating plate 6 to heat the inside of the extrusion barrel 3, starts the first motor 5 to drive the first spiral feed shaft 4 to rotate, and pours the plastic raw material from the feeding hopper 7 into the extrusion barrel 3, and the rotation of the first spiral feed shaft 4 can be used to continuously transport the plastic raw material to the internal space of the extrusion disk 8, and the plastic raw material can be melted during the transportation process, so that the molten plastic raw material is discharged from the multiple extrusion holes 9 in the form of strips, and the second motor 13 is controlled to operate, and the second motor 13 drives the upper horizontal axis 10, the cutting strip 11 and the main pulley 17 to rotate, and the rotation of the cutting strip 11 can be used to cut the extruded strip plastic into granular plastic particles, and the semiconductor refrigerator 29 is controlled to operate to refrigerate the inside of the chassis 1, so that the cut plastic particles can be cooled when they fall, so that the cut plastic particles fall on the screen 14, and the screen 14 can be used to screen the cut granular plastic particles, that is, unqualified large-size plastic particles can be intercepted on the screen 14, and the required Qualified small-size plastic particles are discharged from the discharge port 28 through the sieve holes on the screen 14. By utilizing the transmission effect of the main pulley 17, the auxiliary pulley 18 and the belt 19, the lower horizontal shaft 16 can be controlled to drive the rubber elastic rod 20 and the rubber elastic ball 21 to rotate, so that the rubber elastic ball 21 and the collision block 15 collide intermittently, so that the screen 14 is collided to generate vibration force, thereby improving the screening quality and screening efficiency of the plastic particles. At this time, unqualified large-size plastic particles will enter the conveying cylinder through the feed pipe 24 22, by utilizing the meshing transmission of the driven bevel gear 27 and the active bevel gear 26, the second spiral feed shaft 23 can be controlled to rotate, and then the rotation of the second spiral feed shaft 23 can be used to vertically convey the screened unqualified large-size plastic particles upward and enter the feeding hopper 7 through the discharge pipe 25, so that the unqualified large-size plastic particles return to the inside of the extruder barrel 3, and then the unqualified large-size plastic particles can be re-melted and pelletized, thereby achieving the purpose of cyclic uniform pelletizing, improving production efficiency and production quality.

[0031] The above is a detailed introduction to a circulating uniform pelletizer provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A circulating uniform pelletizer, characterized in that: The invention comprises a chassis (1), a bracket (2) is fixedly mounted on the top inner wall of the chassis (1), an extrusion barrel (3) is fixedly mounted on the bottom of the bracket (2), a first screw feed shaft (4) is rotatably mounted in the extrusion barrel (3), a first motor (5) is fixedly mounted on the left outer wall of the extrusion barrel (3), an output shaft end of the first motor (5) extends into the extrusion barrel (3) and is fixedly connected to the left end of the first screw feed shaft (4), an annular heating chamber is provided in the extrusion barrel (3), an annular electric heating plate (6) is fixedly mounted in the annular heating chamber, a feeding hopper (7) is fixedly mounted on the top of the extrusion barrel (3), and a heating plate (8) is fixedly mounted on the bottom of the extrusion barrel (3). 7), the top of the hopper (7) extends to the outside of the chassis (1), the right side of the extrusion barrel (3) is an open structure, an extrusion disc (8) is fixedly installed on the right side of the extrusion barrel (3), a plurality of extrusion holes (9) are arranged in an array on the right side wall of the extrusion disc (8), a discharge port (28) is arranged on the bottom inner wall of the chassis (1), and a pelletizing mechanism, a screening mechanism and a circulating conveying mechanism are arranged on the chassis (1), the pelletizing mechanism is used to cut the extruded strip plastic into plastic particles, the screening mechanism is used to screen the plastic particles, and the circulating conveying mechanism is used to convey the large-size plastic particles back to the hopper (7).

2. A circulating uniform pelletizer according to claim 1, characterized in that: The pelletizing mechanism comprises an upper transverse axis (10), a cutting strip (11), a motor seat (12) and a second motor (13); an upper transverse hole is opened on the right side wall of the chassis (1); the upper transverse axis (10) is rotatably mounted on the right side wall of the chassis (1); the left end of the upper transverse axis (10) extends into the chassis (1); the cutting strip (11) is fixedly mounted on the left end of the upper transverse axis (10); the cutting strip (11) is in sliding contact with the right side outer wall of the extrusion disc (8); the motor seat (12) is fixedly mounted on the right side outer wall of the chassis (1); the second motor (13) is fixedly mounted on the bottom of the motor seat (12); and the right end of the upper transverse axis (10) is fixedly connected to the output shaft end of the second motor (13).

3. A circulating uniform pelletizer according to claim 2, characterized in that: The screening mechanism comprises a screen (14), a collision block (15), a lower horizontal shaft (16), a main pulley (17), a secondary pulley (18), a belt (19), a rubber elastic rod (20) and a rubber elastic ball (21); the screen (14) is fixedly mounted in the chassis (1) and is arranged in an inclined manner; the screen (14) is located below the extrusion cylinder (3); the collision block (15) is fixedly mounted at the bottom of the screen (14); the lower horizontal shaft (16) is rotatably mounted in the chassis (1) and is located below the screen (14); the rubber elastic rod (20) is arranged at a lower position and the lower horizontal shaft (16) is rotatably mounted in the chassis (1) and is located below the screen (14); The rod (20) is fixedly mounted on the lower transverse axis (16) and is located directly below the collision block (15); the rubber elastic ball (21) is fixedly mounted on one end of the rubber elastic rod (20) away from the lower transverse axis (16); both ends of the lower transverse axis (16) extend outside the chassis (1); the main pulley (17) is fixedly sleeved on the upper transverse axis (10); the secondary pulley (18) is fixedly sleeved on the right end of the lower transverse axis (16); and both ends of the belt (19) are respectively wound around the main pulley (17) and the secondary pulley (18).

4. A circulating uniform pelletizer according to claim 3, characterized in that: The circulating conveying mechanism comprises a conveying cylinder (22), a second spiral feed shaft (23), a feed pipe (24), a discharge pipe (25), a driving bevel gear (26) and a driven bevel gear (27); the conveying cylinder (22) is fixedly mounted on the left outer wall of the chassis (1); the second spiral feed shaft (23) is rotatably mounted in the conveying cylinder (22); the feed pipe (24) is fixedly mounted on the left outer wall of the chassis (1); the feed pipe (24) is located above the screen (14) and is arranged in an inclined manner; the left end of the feed pipe (24) is fixedly connected to the right bottom of the conveying cylinder (22); and the two ends of the feed pipe (24) are respectively connected to the chassis (1). The interior of the housing (1) is connected with the interior of the conveying cylinder (22); the discharge pipe (25) is fixedly mounted on the top right side of the conveying cylinder (22) and is arranged in an inclined manner; the right end of the discharge pipe (25) is fixedly connected to the feeding hopper (7); the two ends of the discharge pipe (25) are respectively connected with the interior of the chassis (1) and the interior of the feeding hopper (7); the active bevel gear (26) is fixedly mounted on the left end of the lower horizontal shaft (16); the bottom end of the second spiral feed shaft (23) extends to the outside of the conveying cylinder (22); the driven bevel gear (27) is fixedly mounted on the bottom end of the second spiral feed shaft (23); and the driven bevel gear (27) is meshed with the active bevel gear (26).

5. A circulating uniform pelletizer according to claim 1, characterized in that: A semiconductor refrigerator (29) is fixedly mounted on the rear outer wall of the chassis (1), and a cooling end of the semiconductor refrigerator (29) extends into the chassis (1).

6. A circulating uniform pelletizer according to claim 2, characterized in that: The length of the cut strip (11) is slightly larger than the maximum diameter of the extrusion disc (8).

7. A circulating uniform pelletizer according to claim 3, characterized in that: An observation hole located above the screen (14) is provided on the front side wall of the case (1), and an observation mirror (30) is fixedly installed in the observation hole.

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