A screening device for natural reclaimed rubber

Abstract

The utility model belongs to natural reclaimed rubber processing equipment technical field especially is a kind of screening device of natural reclaimed rubber, including screening cylinder, feed hopper, support frame and drive assembly, screening cylinder is obliquely set up on support frame, feed hopper is fixed in the feed end of screening cylinder by connecting support, drive assembly is installed on support frame and is transmission connection with screening cylinder. The utility model, by adopting the double-layer screening cylinder structure of oblique setting, cooperate the spiral flow guide plate of built-in screen cylinder inner wall, when drive assembly drives screening cylinder to rotate, material is evenly advanced along spiral flow guide plate, both avoid that material is jammed screen, and also prolongs material screening time, improves screening thoroughness and screening efficiency, built-in screen cylinder and outer tube form multilayer structure, realize the automatic classification collection of fine material and coarse material, and discharge by discharge guide plate, and the classification effect is good, need not additional sorting process, overall structure is simple, and it is convenient to use operation, convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of natural reclaimed rubber processing equipment, specifically a screening device for natural reclaimed rubber. Background Technology

[0002] Natural reclaimed rubber is a recycled material obtained by desulfurizing and regenerating waste rubber products. It is widely used in rubber product manufacturing, building waterproofing, and other fields. Screening is a key step in the processing of natural reclaimed rubber. Its purpose is to remove impurities, incompletely desulfurized rubber particles, and other foreign matter from the reclaimed rubber, ensuring its purity and the quality of subsequent processing.

[0003] Existing natural reclaimed rubber screening devices mostly use fixed screen vibration screening, which has the following drawbacks: First, the reclaimed rubber is prone to clogging the screen during screening, resulting in reduced screening efficiency and requiring frequent shutdowns for cleaning, affecting production continuity; Second, the material moves unevenly on the screen, with some materials staying for too long and others passing through quickly, resulting in incomplete screening and poor grading effect; Third, traditional devices have insufficient structural stability, easily generate significant noise during vibration, and screen replacement is inconvenient, leading to high maintenance costs. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a screening device for natural reclaimed rubber, which solves the technical problems of easy clogging, incomplete screening, poor grading effect, and inconvenient maintenance of existing screening devices.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: A screening device for natural reclaimed rubber includes a screening cylinder, a feed hopper, a support frame, and a drive assembly. The screening cylinder is inclinedly mounted on the support frame. The inclined design, combined with rotation, enables automatic material conveying and screening, avoiding material accumulation. The feed hopper is fixed to the feed end of the screening cylinder via a connecting bracket for stable conveying of the material to be screened. The drive assembly is mounted on the support frame and is connected to the screening cylinder for transmission, providing stable rotational power to the screening cylinder. The screening cylinder includes an outer cylinder and an inner screen cylinder coaxially disposed inside the outer cylinder. The inner screen cylinder is used to screen and classify materials, while the outer cylinder is used to collect the screened fine materials. Spiral guide plates are fixedly connected to the inner walls of both the outer cylinder and the inner screen cylinder to guide the materials to move evenly along the axial direction of the inner screen cylinder, prolonging the material screening time and improving the thoroughness of screening. The feed end of the screening cylinder is sealed by a sealing end plate to prevent materials from leaking out from the feed end. The discharge end is rotatably connected to a discharge end cover, and a discharge port is provided on the discharge end cover at the lowest point corresponding to the outer cylinder and the inner screen cylinder. A discharge guide plate is fixedly connected to the discharge port to guide the materials collected in the outer cylinder and each layer of inner screen cylinders to be discharged.

[0006] Furthermore, the inclination angle between the screening cylinder and the horizontal plane is 15°-30°. This angle range can ensure that the material moves towards the discharge end under the action of gravity, while avoiding excessive movement speed that may affect the screening effect. The outer cylinder is equipped with at least two layers of coaxially arranged built-in screen cylinders. The screen holes of the built-in screen cylinders gradually decrease from the inside to the outside. Different screen hole specifications of the built-in screen cylinders can be selected according to the actual screening needs. One end of the built-in screen cylinder is fixedly connected to the sealing end plate, and the other end slides against the discharge end cover to ensure that the material can be smoothly discharged from the discharge port on the discharge end cover. At the same time, it also ensures smooth rotation between the outer cylinder and the built-in screen cylinders and the discharge end cover. The spiral guide plates installed on the outer cylinder and the inner screen cylinder have the same pitch, which can guide the material to spiral forward along the inner wall of the outer cylinder and the inner screen cylinder, increase the contact area between the material and the screen, and improve the screening efficiency. The discharge end cover is rotatably connected to the outer wall of the discharge end of the outer cylinder through a bearing, ensuring a stable rotatable connection between the two. When the screening cylinder is driven by the drive assembly, it rotates smoothly, thereby completing the screening of internal materials. At this time, the discharge end cover is stably placed on the support frame, providing stable and effective support for the discharge end of the screening cylinder. The discharge guide plate is inclined downwards, and the width of the discharge guide plate is adapted to the size of the discharge port to ensure that the material in the outer cylinder and the inner screen cylinder can be completely discharged to avoid residue.

[0007] Furthermore, the upper part of the support frame is rotatably connected to the two ends of the screening cylinder, respectively, with a first connecting ring and a second connecting ring. The first connecting ring is fixedly fitted onto the discharge end cover, and the second connecting ring is fitted onto the outer wall of the outer cylinder near the feed end, and is rotatably connected to the outer cylinder through a bearing. This ensures the stable rotation of the screening cylinder and improves the overall structural stability of the device.

[0008] Furthermore, the drive assembly includes a driven sprocket, a transmission chain, a driving sprocket, and a geared motor. The geared motor is fixedly connected to the support frame via a motor bracket. The driving sprocket is fixedly connected to the output shaft of the geared motor and is connected to the driven sprocket via the transmission chain. The transmission chain is wound between the driving sprocket and the driven sprocket. The driven sprocket is fixedly fitted onto the outer wall of the outer cylinder. The sprocket drive method ensures the stability and accuracy of power transmission, and the structure is simple and easy to maintain.

[0009] Furthermore, the discharge port of the feed hopper passes through the sealing end plate and faces the feed end opening of the built-in screen cylinder, extending into the built-in screen cylinder to ensure that the material can accurately fall into the innermost built-in screen cylinder. The discharge port of the feed hopper is equipped with an adjustable baffle to facilitate control of the feeding speed and avoid incomplete screening due to excessive feeding speed.

[0010] Compared with the prior art, the present invention provides a screening device for natural reclaimed rubber, which has the following beneficial effects: This invention employs an inclined double-layer screening cylinder structure, coupled with a spiral guide plate on the inner wall of the built-in screening cylinder. When the driving component rotates the screening cylinder, the material moves evenly along the spiral guide plate, which not only avoids material clogging of the screen but also extends the material screening time, improving screening thoroughness and efficiency. The built-in screening cylinder and the outer cylinder form a multi-layer structure, realizing the automatic grading and collection of fine and coarse materials, which are then discharged through the discharge guide plate. The grading effect is good, eliminating the need for additional sorting processes. The overall structure is simple, easy to use, and convenient to operate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the screening cylinder in this utility model; Figure 3 This is a schematic diagram of the feed hopper in this utility model; Figure 4 This is a schematic diagram of the support frame in this utility model; Figure 5 This is a schematic diagram of the drive component in this utility model.

[0012] In the diagram: 1. Screening cylinder; 101. Outer cylinder; 102. Internal screen cylinder; 103. Spiral guide plate; 104. Sealing end plate; 105. Discharge end cover; 106. Discharge guide plate; 2. Feed hopper; 201. Connecting bracket; 3. Support frame; 301. First connecting ring; 302. Second connecting ring; 4. Drive assembly; 401. Driven sprocket; 402. Transmission chain; 403. Drive sprocket; 404. Gear motor; 405. Motor bracket. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0014] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in the figure, one embodiment of the present invention proposes a screening device for natural reclaimed rubber, including a screening cylinder 1, a feeding hopper 2, a support frame 3, and a drive assembly 4. The screening cylinder 1 is inclinedly mounted on the support frame 3. The inclined design combined with rotation realizes automatic material conveying and screening, avoiding material accumulation. The feeding hopper 2 is fixed to the feeding end of the screening cylinder 1 through a connecting bracket 201 for stable conveying of the material to be screened. The drive assembly 4 is mounted on the support frame 3 and is connected to the screening cylinder 1 for transmission, providing stable rotational power for the screening cylinder 1. The screening cylinder 1 includes an outer cylinder 101 and an inner screen cylinder 102 coaxially disposed inside the outer cylinder 101. The inner screen cylinder 102 is used to screen and classify materials, while the outer cylinder 101 is used to collect the screened fine materials. The inner walls of both the outer cylinder 101 and the inner screen cylinder 102 are fixedly connected to spiral guide plates 103, which are used to guide the materials to move uniformly along the axial direction of the inner screen cylinder 102, extend the material screening time, and improve the screening thoroughness. The feed end of the screening cylinder 1 is sealed by a sealing end plate 104 to prevent materials from leaking out from the feed end. The discharge end is rotatably connected to a discharge end cover 105. The discharge end cover 105 is provided with a discharge port at the lowest point of the outer cylinder 101 and the inner screen cylinder 102. The discharge port is fixedly connected to a discharge guide plate 106, which is used to guide the materials collected in the outer cylinder 101 and each layer of inner screen cylinder 102 to be discharged. The inclination angle between the screening cylinder 1 and the horizontal plane is 15°-30°. This angle range can ensure that the material moves towards the discharge end under the action of gravity, while avoiding excessive movement speed that may affect the screening effect. The outer cylinder 101 has at least two coaxially arranged built-in screen cylinders 102 inside. The screen holes of the built-in screen cylinders 102 gradually decrease from the inside to the outside. Different screen hole specifications of the built-in screen cylinders 102 can be selected according to the actual screening needs. One end of the built-in screen cylinder 102 is fixedly connected to the sealing end plate 104, and the other end slides against the discharge end cover 105 to ensure that the material can be smoothly discharged from the discharge port on the discharge end cover 105. At the same time, it also ensures smooth rotation between the outer cylinder 101 and the built-in screen cylinders 102 and the discharge end cover 105. The spiral guide plates 103 installed on the outer cylinder 101 and the inner screen cylinder 102 have the same pitch, which can guide the material to spiral forward along the inner wall of the outer cylinder 101 and the inner screen cylinder 102, increase the contact area between the material and the screen, and improve the screening efficiency. Among them, the discharge end cover 105 is rotatably connected to the outer wall of the discharge end of the outer cylinder 101 through the bearing, ensuring that the two are stably connected together. When the screening cylinder 1 is driven by the drive component 4, it rotates smoothly, thereby completing the screening of internal materials. At this time, the discharge end cover 105 is stably placed on the support frame 3, providing stable and effective support for the discharge end of the screening cylinder 1. The discharge guide plate 106 is inclined downward, and the width of the discharge guide plate 106 is adapted to the size of the discharge port to ensure that the material in the outer cylinder 101 and the inner screen cylinder 102 can be completely discharged to avoid residue. The discharge port of the feed hopper 2 passes through the sealing end plate 104 and is directly opposite the feed end opening of the built-in screen cylinder 102, and extends into the built-in screen cylinder 102 to ensure that the material can fall accurately into the innermost built-in screen cylinder 102. The discharge port of the feed hopper 2 is equipped with an adjustable baffle to facilitate control of the feeding speed and avoid incomplete screening due to excessive feeding speed. Among them, the upper part of the support frame 3 is rotatably connected to the two ends of the screening cylinder 1, respectively, with a first connecting ring 301 and a second connecting ring 302. The first connecting ring 301 is fixedly fitted on the discharge end cover 105, and the second connecting ring 302 is fitted on the outer wall of the outer cylinder 101 near the feed end and is rotatably connected to the outer cylinder 101 through a bearing. This not only ensures the stable rotation of the screening cylinder 1, but also improves the overall structural stability of the device. At the same time, an anti-slip pad is placed at the bottom of the support frame 3 to improve the stability of the device. The drive assembly 4 includes a driven sprocket 401, a transmission chain 402, a drive sprocket 403, and a geared motor 404. The geared motor 404 is fixedly connected to the support frame 3 via a motor bracket 405 to ensure stable installation. The drive sprocket 403 is fixedly connected to the output shaft of the geared motor 404 and is connected to the driven sprocket 401 via the transmission chain 402. The geared motor 404 is an RV063 model with a power of 1.5kW and an output speed of 30r / min. The transmission ratio between the drive sprocket 403 and the driven sprocket 401 is 1:2, ensuring that the rotation speed of the screening cylinder 1 is stable at 15r / min, which ensures the screening effect and avoids material splashing due to excessive speed. The transmission chain 402 is wound between the drive sprocket 403 and the driven sprocket 401. The driven sprocket 401 is fixedly mounted on the outer wall of the outer cylinder 101. The sprocket transmission method ensures the stability and accuracy of power transmission, and the structure is simple and easy to maintain.

[0015] When using it, first select the appropriate screen size of the built-in screen cylinder 102 according to the screening requirements, install it inside the outer cylinder 101, and then assemble and debug the entire device. Then, adjust the baffle at the discharge port of feed hopper 2 and set a suitable feeding speed; Start the geared motor 404. The geared motor 404 drives the screening cylinder 1 to rotate at a constant speed through the drive sprocket 403, the transmission chain 402 and the driven sprocket 401. The natural recycled rubber material to be screened is poured into the feed hopper 2. The material falls into the built-in screen cylinder 102 through the feed hopper 2. Under the guidance of the spiral guide plate 103, it spirals forward along the inner wall of the built-in screen cylinder 102. During the process, the fine material that meets the specifications falls into the outer cylinder 101 through the screen holes, passes through the discharge port at the corresponding position on the discharge end cover 105, and is discharged and collected through the discharge guide plate 106. Coarse material and impurities that do not pass through the sieve holes move along the built-in sieve cylinder 102 to the discharge end, and are discharged from the discharge port at the corresponding position on the discharge end cover 105 onto the discharge guide plate 106, where they can then be collected.

[0016] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screening device for natural reclaimed rubber, comprising a screening cylinder (1), a feed hopper (2), a support frame (3), and a drive assembly (4), characterized in that: The screening cylinder (1) is inclinedly mounted on the support frame (3), the feed hopper (2) is fixed to the feed end of the screening cylinder (1) through the connecting bracket (201), and the drive assembly (4) is mounted on the support frame (3) and connected to the screening cylinder (1) in a transmission manner. The screening cylinder (1) includes an outer cylinder (101) and an inner screen cylinder (102) coaxially disposed inside the outer cylinder (101). The inner walls of the outer cylinder (101) and the inner screen cylinder (102) are fixedly connected with spiral guide plates (103). The feed end of the screening cylinder (1) is sealed by a sealing end plate (104). The discharge end is rotatably connected with a discharge end cover (105). The discharge end cover (105) is provided with a discharge port at the lowest part of the outer cylinder (101) and the inner screen cylinder (102). The discharge port is fixedly connected with a discharge guide plate (106).

2. The screening device for natural reclaimed rubber according to claim 1, characterized in that: The inclination angle between the screening cylinder (1) and the horizontal plane is 15°-30°; The outer cylinder (101) is provided with at least two coaxially arranged inner screen cylinders (102). The screen holes of the inner screen cylinders (102) gradually decrease from the inside to the outside. One end of the inner screen cylinder (102) is fixedly connected to the sealing end plate (104), and the other end slides against the discharge end cover (105). The spiral guide plates (103) installed on the outer cylinder (101) and the inner screen cylinder (102) have the same pitch; The discharge end cap (105) is rotatably connected to the outer wall of the discharge end of the outer cylinder (101) via a bearing; The discharge guide plate (106) is inclined downward, and the width of the discharge guide plate (106) is adapted to the size of the discharge port.

3. The screening device for natural reclaimed rubber according to claim 1, characterized in that: The upper part of the support frame (3) is rotatably connected to the two ends of the screening cylinder (1) respectively by a first connecting ring (301) and a second connecting ring (302). The first connecting ring (301) is fixedly fitted onto the discharge end cap (105); The second connecting ring (302) is fitted on the outer wall of the outer cylinder (101) near the feed end and is rotatably connected to the outer cylinder (101) through a bearing.

4. The screening device for natural reclaimed rubber according to claim 1, characterized in that: The drive assembly (4) includes a driven sprocket (401), a transmission chain (402), a drive sprocket (403), and a geared motor (404). The geared motor (404) is fixedly connected to the support frame (3) via a motor bracket (405); The driving sprocket (403) is fixedly connected to the output shaft of the geared motor (404) and is connected to the driven sprocket (401) via the transmission chain (402); The drive chain (402) is wound between the driving sprocket (403) and the driven sprocket (401); The driven sprocket (401) is fixedly mounted on the outer wall of the outer cylinder (101).

5. The screening device for natural reclaimed rubber according to claim 1, characterized in that: The discharge port of the feed hopper (2) passes through the sealing end plate (104) and faces the feed end opening of the built-in screen cylinder (102), and extends into the built-in screen cylinder (102). The discharge port of the feed hopper (2) is provided with a baffle with an adjustable opening.

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