A screening device for a granulator

Abstract

A granulator sieve device, the drum A coaxial welding connection is arranged on the rotating shaft, the drum A cylinder mouth position welding connection has the mounting plate A, the mounting plate A is welded to the rotating shaft one end, both sides of the rotating shaft are provided with a plurality of groups of ball bearings, the drum B is penetrated by the rotating shaft and is single-sided matched on one side bearing of the rotating shaft, the rotating shaft is coaxially fixedly connected with the transmission gear near the matched end, the drum B is provided with the mounting plate B away from the transmission gear one end, the mounting plate B is connected with the outer cylinder wall of the drum A and the connecting position is provided with the annular bearing that is matched with each other, the drum B is coaxially provided with the gear ring on the side near the transmission gear, the gear ring is provided with the meshing tooth inside, the driving gear is arranged between the gear ring and the transmission gear, the driving gear is meshed with the transmission gear and the gear ring, thereby solve the problem that cannot be required to screen a plurality of plastic particles after processing is completed once.

Description

Technical Field

[0001] This utility model belongs to the field of plastic granule production, and in particular relates to a screening device for a granulator. Background Technology

[0002] In the current plastic pellet production process, defective products often occur. After the pelletizer granulates the plastic, there are various non-standard plastic pellets. These non-standard plastic pellets can be classified into under-cast pellets, plastic fragments, and over-cast pellets. To ensure pellet quality, it is necessary to screen pellets in various states. However, multiple screenings are time-consuming and labor-intensive. Therefore, a screening device for pelletizers is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a screening device for a granulator, which aims to solve the problems mentioned in the background art.

[0004] To address the aforementioned problems, a screening device for a granulator is provided, characterized in that it includes a shell, roller A, roller B, a rotating shaft, and a motor. Roller A is coaxially welded to the rotating shaft. A mounting plate A is welded to the opening of roller A and welded to one end of the rotating shaft. Multiple sets of ball bearings are provided on both sides of the rotating shaft. Roller B is penetrated by the rotating shaft and is fitted on one side of a bearing on the rotating shaft. A transmission gear is coaxially fixedly connected to the rotating shaft near the fitted end. A mounting plate B is provided at the end of roller B away from the transmission gear. The mounting plate B is connected to the outer wall of roller A, and a mating annular bearing is provided at the connection position. A gear ring is coaxially provided on the side of roller B near the transmission gear. The gear ring has meshing teeth inside. A driving gear is provided between the gear ring and the transmission gear, and the driving gear meshes with the transmission gear and the gear ring.

[0005] Preferably, a ball bearing is provided near the gear end of the rotating shaft, and the ball bearing allows the rotating shaft to be movably connected to the side wall of the housing. A motor base is provided on one side of the housing, and a motor is bolted to the motor base. The output end of the motor passes through the housing and is coaxially connected to the drive gear. This ensures that both roller A and roller B are driven by the drive gear, and roller A and roller B rotate in opposite directions coaxially, with the bearing structure assisting the rotation.

[0006] Preferably, a guide plate is welded to the bottom of the outer shell near the B-ring of the mounting plate, and the guide plate is inclined downward.

[0007] Preferably, the housing is provided with a mounting plate C, which is penetrated by one side of the rotating shaft and has a ball gear fitted at the through end.

[0008] Preferably, the cylinder wall of roller A is provided with multiple sets of screening holes A, and the cylinder wall of roller B is provided with screening holes B. The size of screening holes A is at least 2 mm larger than the material particles, and the size of screening holes B is at least 2 mm smaller than the material. The inner cylinder wall of roller B needs to be demolded, and the demolding angle needs to tilt the material towards the guide plate at least 3°. The inner cylinder wall of roller A needs to be demolded, and the demolding angle needs to tilt the material towards the axis of rotation at least 3°. This ensures that roller A can retain larger defective particles in roller A, and leak smaller fragments, qualified particles, and small casting waste to roller B. Roller B can retain qualified particles in roller B and leak out the remaining waste.

[0009] Preferably, the outer shell is provided with a pull-out garbage trough at the bottom of the roller B, which can collect and collect the waste material that leaks out of the roller B.

[0010] Preferably, both mounting plate A and mounting plate B are provided with material avoidance openings, and a baffle plate is bolted to the bottom of mounting plate C. The baffle plate can block the lower horizontal part of the cylinder opening of roller A to prevent particles from jumping out after being poured in, and can be disassembled for later cleaning.

[0011] Preferably, the housing is provided with a switch, which controls the operation of the motor.

[0012] In use, the plastic granules to be screened are poured into the external funnel. The granules pass through the funnel and the material avoidance port set on the mounting plate A and enter the drum A. The motor is turned on, which drives the drum A and the drum B to rotate. When the drum A rotates, materials larger than the standard size will remain in the drum, and smaller materials will fall into the drum B. The drum wall of the drum B retains the standard size granules and screens the debris into the bottom garbage trough. Finally, due to the centrifugal force of rotation, the standard size granules roll into the guide plate and enter the external container. When cleaning the inside, the baffle plate is removed, the cavity is emptied, and the garbage trough is pulled out.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This solves the problem of not being able to screen multiple types of plastic granules according to requirements in one go after processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is the overall front view of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a more thorough understanding of the present utility model and to fully convey the concept of the present utility model to those skilled in the art.

[0019] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0020] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Please see Figure 1-3As shown, the device includes a housing 1, roller A3, roller B4, rotating shaft 5, and motor 2. Roller A3 is coaxially welded to the rotating shaft 5. A mounting plate A312 is welded to the opening of roller A3 and welded to one end of the rotating shaft 5. Multiple sets of ball bearings 511 are provided on both sides of the rotating shaft 5. Roller B4 is penetrated by the rotating shaft 5 and is fitted on one side of the bearing 511 on the rotating shaft 5. A transmission gear 212 is coaxially fixedly connected to the rotating shaft 5 near the mating end. A mounting plate B412 is provided at the end of roller B4 away from the transmission gear 212. The mounting plate B412 is connected to the outer wall of roller A3, and a matching ring bearing 511 is provided at the connection position. A gear ring 213 is coaxially provided on the side of roller B4 near the transmission gear 212. The gear ring 213 has meshing teeth inside. A drive gear 211 is provided between the gear ring 213 and the transmission gear 212, and the drive gear 211 meshes with the transmission gear 212 and the gear ring 213.

[0022] Furthermore, a ball bearing 511 is provided near the gear end of the rotating shaft 5. The ball bearing 511 allows the rotating shaft 5 to be movably connected to the side wall of the housing 1. A motor 2 seat is provided on one side of the housing 1. A motor 2 is bolted to the motor 2 seat. The output end of the motor 2 passes through the housing 1 and is coaxially connected to the drive gear 211.

[0023] Furthermore, a guide plate 112 is welded to the bottom of the outer casing 1 near the ring opening of the mounting plate B412, with the guide plate 112 facing downwards at an angle.

[0024] Furthermore, the outer casing 1 is provided with a mounting plate C114, which is penetrated by one side of the rotating shaft 5 and has a ball gear fitted at the through end.

[0025] Furthermore, the cylinder wall of roller A3 is provided with multiple sets of screening holes A311, and the cylinder wall of roller B4 is provided with screening holes B411. The size of screening holes A311 is at least 2 mm larger than the material particles, and the size of screening holes B411 is at least 2 mm smaller than the material. The inner cylinder wall of roller B4 needs to be demolded, and the demolding angle needs to make the material tilt towards the guide plate 112 at least 3°. The inner cylinder wall of roller A3 needs to be demolded, and the demolding angle needs to make the material tilt towards the axis of rotation 5 at least 3°.

[0026] Furthermore, the outer casing 1 is provided with a pull-out garbage chute at the bottom of the roller B4.

[0027] Furthermore, both mounting plate A312 and mounting plate B412 are provided with material avoidance openings, and mounting plate C114 is bolted to the bottom with a baffle plate 113, which can block the horizontal lower half of the cylinder opening of roller A3.

[0028] Furthermore, a switch 111 is provided on the outer casing 1, which controls the operation of the motor 2.

[0029] In practical use, the plastic granules to be screened are poured into an external funnel. The granules pass through the funnel and the material avoidance port set on the mounting plate A312 into the drum A3. The motor 2 is turned on, causing the motor 2 to drive the drum A3 and the drum B4 to rotate. When the drum A3 rotates, materials larger than the standard size will remain in the drum, while smaller materials fall into the drum B4. The drum wall of the drum B4 retains the standard-sized granules and screens the debris into the bottom garbage trough. Finally, due to the centrifugal force of rotation, the standard-sized granules roll into the guide plate 112 and enter the external container. When cleaning the inside, the baffle plate 113 is removed, the cavity is emptied, and the garbage trough is pulled out. This solves the problem of not being able to screen multiple plastic granules according to requirements at one time after processing.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A screening device for a granulator, characterized in that, The device includes a shell, roller A, roller B, a rotating shaft, and a motor. Roller A is coaxially fixedly connected to the rotating shaft. A mounting plate A is fixedly connected to the opening of roller A. The mounting plate A is fixedly connected to one end of the rotating shaft. Multiple sets of ball bearings are provided on both sides of the rotating shaft. Roller B is penetrated by the rotating shaft and is fitted on one side of a bearing on the rotating shaft. A transmission gear is coaxially fixedly connected to the rotating shaft near the fitted end. A mounting plate B is provided at the end of roller B away from the transmission gear. The mounting plate B is connected to the outer wall of roller A, and a mating ring bearing is provided at the connection position. A gear ring is coaxially provided on the side of roller B near the transmission gear. The gear ring has meshing teeth inside. A driving gear is provided between the gear ring and the transmission gear. The driving gear meshes with the transmission gear and the gear ring.

2. The screening device for a granulator according to claim 1, characterized in that, A ball bearing is provided near the gear end of the rotating shaft, which allows the rotating shaft to be movably connected to the side wall of the housing. A motor base is provided on one side of the housing, and a motor is fixedly connected to the motor base. The output end of the motor passes through the housing and is coaxially connected to the drive gear.

3. The screening device for a granulator according to claim 1, characterized in that, A guide plate is fixedly connected to the bottom of the outer shell near the B-ring of the mounting plate, and the guide plate is angled downwards.

4. The screening device for a granulator according to claim 1, characterized in that, The outer casing is provided with a mounting plate C, which is penetrated by one side of the rotating shaft and has a ball gear fitted at the through end.

5. The screening device for a granulator according to claim 1, characterized in that, The cylinder wall of roller A is provided with multiple sets of screening holes A, and the cylinder wall of roller B is provided with screening holes B. The size of screening holes A is at least 2 mm larger than the material particles, and the size of screening holes B is at least 2 mm smaller than the material particles. The inner cylinder wall of roller B needs to be demolded, and the demolding angle needs to make the material tilt towards the guide plate at least 3°. The inner cylinder wall of roller A needs to be demolded, and the demolding angle needs to make the material tilt towards the axis of rotation at least 3°.

6. The screening device for a granulator according to claim 1, characterized in that, The outer shell is equipped with a pull-out garbage trough at the bottom of roller B.

7. The screening device for a granulator according to claim 1, characterized in that, Both mounting plate A and mounting plate B are provided with material avoidance openings, and a baffle plate is fixedly connected to the bottom of mounting plate C. The baffle plate can block the horizontal lower half of the cylinder opening of roller A.

8. The screening device for a granulator according to claim 1, characterized in that, A switch is provided on the outer casing, which controls the operation of the motor.

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