Resin profile raw material screening device

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By designing a combination of a rotatable screening cylinder and a high-pressure jet pipe, the problems of pressure imbalance and blockage in the cyclone screening device for resin profile raw materials were solved, achieving efficient screening and convenient cleaning, and improving production stability and product quality.

CN224489698UActive Publication Date: 2026-07-14DONGYING DAMING NEW BUILDING MATERIALS CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: DONGYING DAMING NEW BUILDING MATERIALS CO LTD
Filing Date: 2025-08-21
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

Existing cyclone screening devices for resin profile raw materials are prone to pressure imbalance inside and outside the equipment during long-term operation, allowing external dust and impurities to enter, affecting screening accuracy. Furthermore, the screen is easily clogged and difficult to clean, affecting production progress.

Method used

A resin profile raw material screening device was designed. It uses a rotatable screening cylinder in conjunction with a high-pressure blow pipe for automatic cleaning. Combined with a breather to filter external gas, it maintains the air pressure balance inside and outside the equipment to prevent contamination. The angle of the screening cylinder can be easily adjusted by a toggle locking mechanism to facilitate cleaning.

Benefits of technology

This improved the stability and precision of the screening process, reduced equipment failures and production stoppages, ensured screening efficiency and product quality, and prevented raw material contamination.

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Figure CN224489698U_ABST

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Abstract

The utility model relates to a resin section bar raw material screening device belongs to screening equipment technical field, including box, baffle, fine material outlet hopper and coarse material outlet hopper, the fixed feed auger of box, the rotatable installation of baffle and box has screening net cylinder, the conveying shaft of feed auger extends into screening net cylinder and is fixed with wheel blade, the top of screening net cylinder is equipped with high pressure jet pipe, the bottom of high pressure jet pipe is evenly fixed with air jet mouth along the axial direction of screening net cylinder, and the one end of box is equipped with the lock -out mechanism of the dolly screening net cylinder rotation and lock -out, the top of box is equipped with two breathing tubes, and the breathing tube is connected with breather. The utility model discloses can be regularly or according to the automatic operation situation, actively clean screening net cylinder, timely remove the screen hole blockage, guarantee the smoothness of cyclone screening, improve screening efficiency and accuracy. And realize the dynamic balance of the inside and outside pressure of box, prevent the equipment from inhaling unfiltered impurities due to pressure difference.

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Description

Technical Field

[0001] This utility model relates to a resin profile raw material screening device, belonging to the field of screening equipment technology. Background Technology

[0002] In the production of resin profiles, raw material screening is a critical step, and its effectiveness directly affects the quality of subsequent products. Existing cyclone screening devices for resin profile raw materials are prone to pressure imbalances due to internal airflow changes during long-term operation. This allows external dust and impurities to easily enter the equipment, contaminating the raw materials and affecting screening accuracy. Furthermore, screen blockages are difficult to clean, impacting production progress. Utility Model Content

[0003] This invention provides a resin profile raw material screening device to solve the problems existing in the background art.

[0004] This utility model relates to a resin profile raw material screening device, including a box body, a partition inside the box body dividing it into a coarse material chamber and a fine material chamber, fine material discharge hopper and coarse material discharge hopper respectively connected to the bottom of the coarse material chamber and the fine material chamber, a feeding auger fixed on the box body, a screening screen cylinder rotatably installed between the partition and the box body, the conveying shaft of the feeding auger extending into the screening screen cylinder and fixed with wheel blades, a high-pressure jet pipe provided above the screening screen cylinder, air nozzles evenly fixed at the bottom of the high-pressure jet pipe along the axial direction of the screening screen cylinder, a toggle locking mechanism provided at one end of the box body to rotate and lock the screening screen cylinder, and two breathing pipes provided at the top of the box body, the breathing pipes being connected to a breather.

[0005] As a preferred embodiment, the toggle locking mechanism includes locking holes on the housing, with locking pins inside the locking holes. Rotary bearings are fixed to the outer walls at both ends of the screening cylinder. The outer rings of the rotary bearings at both ends are fixed to the inner wall of the housing and a partition plate, respectively. The inner ring of the right-end rotary bearing has multiple locking holes that mate with the locking pins. Two strip-shaped toggle arc holes are located on the outer wall of the housing corresponding to the locking holes. The rotary bearings provide stable support for the rotation of the screening cylinder, ensuring smooth rotation and high coaxiality. The locking pins, in conjunction with the locking holes, can quickly fix the screening cylinder, ensuring stability during the screening process. The strip-shaped toggle arc holes allow operators to manually adjust the angle of the cylinder and can be used with air nozzles to better clean the mesh of the screening cylinder.

[0006] As a preferred embodiment, a sealing groove is provided on the right end face of the screening cylinder, and a sealing ring is provided inside the sealing groove. A gap is provided between the partition and the outer wall of the screening cylinder, and a second sealing groove is provided on the partition within this gap, and a second sealing ring is provided inside the second sealing groove. This provides better sealing.

[0007] As a preferred embodiment, the feeding auger includes a feeding cylinder fixed to the housing and extending into the screening screen cylinder at its left end. The feeding cylinder is equipped with a feeding spiral plate fixed to the conveying shaft. The right end of the conveying shaft extends out of the feeding cylinder and is fixed with a driving mechanism. The top of the feeding cylinder is equipped with a feeding hopper.

[0008] As a preferred embodiment, the drive mechanism includes a driven pulley fixed on the conveyor shaft, the driven pulley being connected to a driving pulley via a belt, the driving pulley being fixedly connected to a drive motor, and the drive motor being fixed on the frame at the bottom of the housing.

[0009] As a preferred embodiment, the left end of the housing is equipped with a closure, which is fitted with a cover. A bearing supporting the left end of the conveyor shaft is located in the center of the cover. A keel sealing ring is located to the right of the bearing, and a bearing cap fixed to the cover is located to the right of the keel sealing ring. A quick-release mechanism is provided between the outer edge of the cover and the housing. The bearing provides stable support for the left end of the conveyor shaft, ensuring its coaxiality during high-speed rotation. The keel sealing ring has excellent sealing performance, effectively preventing dust from entering the bearing. The bearing cap provides fixed protection for the bearing and the sealing ring. The closure facilitates opening the housing for maintenance of internal components, and the quick-release mechanism further enhances maintenance convenience.

[0010] As a preferred embodiment, the quick-release mechanism includes a rotating seat fixed to the housing, a pin fixed to the rotating seat, a rotating sleeve rotatably mounted on the pin, a locking screw fixed to the outer wall of the rotating sleeve, a locking pressure block that can slide along its axial direction on the locking screw, a locking nut threadedly connected to the locking screw on the outer side of the locking pressure block, a spring fitted on the locking screw inside the locking pressure block, a sealing gasket between the closed cover and the housing, an inclined locking ramp on the locking pressure block, and a locking cone truncated cone that mates with the locking ramp at the outer left edge of the closed cover. The spring, locking ramp, and locking cone truncated cone work together to ensure a tight fit between the closed cover and the housing through preload, achieving a reliable seal with the sealing gasket; loosening the locking nut quickly releases the lock, and rotating the rotating sleeve around the pin opens the locking structure, enabling quick disassembly and assembly of the closed cover, significantly improving equipment maintenance efficiency.

[0011] As a preferred embodiment, the respirator includes a support flange fixed to the outer side of the top of the breathing tube, a breathing mesh cover fixed to the outer side of the top of the support flange, and an inner breathing mesh cylinder threaded to the top of the breathing tube. Filter cotton is filled between the inner breathing mesh cylinder and the breathing mesh cover. The filter cotton effectively filters dust and impurities from the air entering the chamber, preventing contamination of the raw materials. The inner breathing mesh cylinder and the mesh cover form a double layer of protection, preventing the filter cotton from falling off or being blown away by the airflow. The respirator balances the air pressure inside and outside the chamber through the breathing tube, avoiding airflow turbulence caused by pressure differences and ensuring a stable screening process.

[0012] This utility model has the following beneficial effects:

[0013] The screening cylinder is rotatable, and with the air nozzles above, it can periodically or automatically clean itself according to operating conditions. This promptly removes blockages in the screen holes, ensuring smooth cyclone screening, improving screening efficiency and accuracy, and reducing equipment failures and production stoppages caused by screen cylinder blockage. The top breather effectively filters dust and impurities from the incoming air, preventing contamination of raw materials; it also achieves dynamic pressure balance inside and outside the chamber, preventing the equipment from drawing in unfiltered impurities due to pressure differences. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Partial structural diagram Figure 1 ;

[0016] Figure 3 for Figure 1 Partial structural diagram Figure 2 ;

[0017] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0018] Figure 5 A schematic diagram of the side structure at the actuated arc hole;

[0019] In the diagram: 1. Housing; 2. Wheel blades; 3. Feed auger; 4. Slewing bearing; 5. Conveyor shaft; 6. Screening cylinder; 7. High-pressure jet pipe; 8. Air nozzle; 9. Fine material outlet hopper; 10. Coarse material outlet hopper; 11. Baffle plate; 12. Sealing cover; 13. Locking nut; 14. Spring; 15. Breathing pipe; 16. Filter cotton; 17. Breathing mesh cover; 18. Drive motor; 19. Protective cover; 20. Actuating arc hole; 21. Locking pin; 22. Support flange; 23. Inner breathing mesh cylinder; 24. Locking screw; 25. Locking pressure block. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 1 to 5As shown, this utility model is a resin profile raw material screening device, including a box body 1. The box body 1 is provided with a partition 11 that divides it into a coarse material chamber and a fine material chamber. The bottom of the coarse material chamber and the fine material chamber are respectively connected to a fine material outlet 9 and a coarse material outlet 10. A feeding auger is fixed on the box body 1. A screening screen cylinder 6 is rotatably installed between the partition 11 and the box body 1. The conveying shaft 5 of the feeding auger extends into the screening screen cylinder 6 and is fixed with wheel blades 2. A high-pressure jet pipe 7 is provided above the screening screen cylinder 6. Air nozzles 8 are evenly fixed at the bottom of the high-pressure jet pipe 7 along the axial direction of the screening screen cylinder 6. A toggle locking mechanism is provided at one end of the box body 1 to rotate and lock the screening screen cylinder 6. Two breathing pipes 15 are provided at the top of the box body 1, and breathing pipes 15 are connected to a breather.

[0022] During operation, the material enters the screening cylinder 6 through the feeding auger. The wheel blades 2 rotate with the conveyor shaft 5, forming an airflow vortex inside the housing 1. This vortex, in conjunction with the screening cylinder 6, performs screening. Fine material passes through the mesh and falls into the fine material chamber, then is discharged through the fine material outlet 9. Coarse material remains inside the screening cylinder 6 and is eventually discharged through the coarse material outlet 10. Every so often, the locking mechanism is used to release the lock on the screening cylinder 6, and then the screening cylinder 6 is rotated. The high-pressure blowpipe 7 sprays air through the nozzle 8 onto the outer wall of the screening cylinder 6, blowing away the material blocking the mesh of the screening cylinder 6. During operation, the breather filters the outside air, balances the pressure inside and outside the housing 1, and prevents airflow turbulence from affecting the screening.

[0023] In Example 2, based on Example 1, the locking mechanism includes a locking hole on the housing 1, with a locking pin 21 inside. Rotary bearings 4 are fixed to the outer walls of both ends of the screening cylinder 6. The outer rings of the rotary bearings 4 are fixed to the inner wall of the housing 1 and the partition plate 11, respectively. The connection between the inner and outer rings of the rotary bearings 4 has built-in seals on both sides, ensuring a good seal. The inner ring of the right-end rotary bearing 4 has multiple locking holes that mate with the locking pin 21. Two strip-shaped actuating arc holes 20 are located on the outer wall of the housing 1 corresponding to the locking holes. When cleaning the screening cylinder 6, the locking pin 21 is pulled out, and then the screening cylinder 6 is actuated using the locking pin 21 at the actuating arc holes 20, causing the screening cylinder 6 to rotate for cleaning. After cleaning, the locking pin 21 is reinserted to secure it.

[0024] A sealing groove is provided on the right end face of the screening cylinder 6, and a sealing ring is provided in the sealing groove. A gap is provided between the partition plate 11 and the outer wall of the screening cylinder 6. A sealing groove is provided on the partition plate 11 in this gap, and a sealing ring is provided in the sealing groove.

[0025] The feeding auger includes a feeding cylinder fixed on the housing 1 and extending into the screening cylinder 6 at its left end. The feeding cylinder is equipped with a feeding spiral plate 3 fixed on the conveying shaft 5. The right end of the conveying shaft 5 extends out of the feeding cylinder and is fixed with a driving mechanism. The top of the feeding cylinder is equipped with a feeding hopper.

[0026] The drive mechanism includes a driven pulley fixed to the conveyor shaft 5. The driven pulley is connected to a driving pulley via a belt. The driving pulley is fixedly connected to a drive motor 18, which is fixed to the frame at the bottom of the housing 1. Rotation of the drive motor 18 drives the driving pulley to rotate, which in turn drives the conveyor shaft 5 to rotate via the belt and driven pulley. This allows the material to be conveyed using the feed screw 3, and also drives the wheel blades 2 to rotate. Protective covers 19 are provided on the outer sides of the driven pulley, belt, and driving pulley.

[0027] The left end of the housing 1 is provided with a closed opening, and a closed cover 12 is provided on the closed opening. A bearing supporting the left end of the conveyor shaft 5 is provided in the middle of the closed cover 12. A keel sealing ring is provided on the right side of the bearing. A bearing cover fixed on the closed cover 12 is provided on the right side of the keel sealing ring. A quick release mechanism is provided between the outer edge of the closed cover 12 and the housing 1.

[0028] The quick-release mechanism includes a rotating seat fixed to the housing 1, a pin fixed to the rotating seat, a rotating sleeve rotatably mounted on the pin, a locking screw 24 fixed to the outer wall of the rotating sleeve, a locking block 25 that can slide along its axial direction on the locking screw 24, a locking nut 13 threadedly connected to the locking screw 24 on the outer side of the locking block 25, a spring 14 fitted on the locking screw 24 inside the locking block 25, a sealing gasket between the sealing cover 12 and the housing 1, an inclined locking ramp on the locking block 25, and a locking cone that mates with the locking ramp at the outer left edge of the sealing cover 12. During disassembly, loosening the locking nut 13 causes the spring 14 to push the locking block 25 away from the locking cone, releasing the lock. Then, rotating the locking screw 24 outwards quickly opens the sealing cover 12, allowing maintenance of the bearing, keel seal, and other components on the left end of the conveyor shaft 5.

[0029] The respirator includes a support flange 22 fixed to the outer top of the breathing tube 15. A breathing mesh 17 is bolted to the outer top of the support flange 22. An inner breathing mesh 23 is threaded to the top of the breathing tube 15. Filter cotton 16 is filled between the inner breathing mesh 23 and the breathing mesh 17. During maintenance, the breathing mesh 17 is removed, the worn-out filter cotton 16 is replaced, and dust is cleaned from the surfaces of the breathing mesh 17 and the inner breathing mesh 23.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A resin profile raw material screening device, comprising a housing (1), wherein the housing (1) is provided with a partition (11) dividing it into a coarse material chamber and a fine material chamber, and the bottom of the coarse material chamber and the fine material chamber are respectively connected to a fine material outlet hopper (9) and a coarse material outlet hopper (10), and a feeding auger is fixed on the housing (1), characterized in that: A screening cylinder (6) is rotatably installed between the partition (11) and the box (1). The conveying shaft (5) of the feeding auger extends into the screening cylinder (6) and is fixed with wheel blades (2). A high-pressure jet pipe (7) is provided above the screening cylinder (6). Air nozzles (8) are evenly fixed at the bottom of the high-pressure jet pipe (7) along the axial direction of the screening cylinder (6). A toggle locking mechanism is provided at one end of the box (1) to rotate and lock the screening cylinder (6). Two breathing pipes (15) are provided at the top of the box (1). Breathing pipes (15) are connected to a breather.

2. The resin profile raw material screening device according to claim 1, characterized in that: The toggle locking mechanism includes a locking hole on the housing (1), a locking pin (21) inside the locking hole, a slewing bearing (4) fixed on the outer side wall of both ends of the screening cylinder (6), the outer rings of the slewing bearings (4) at both ends are fixed on the inner wall of the housing (1) and the partition (11) respectively, and the inner ring of the slewing bearing (4) at the right end is provided with multiple locking holes that cooperate with the locking pin (21), and two strip-shaped toggle arc holes (20) are provided on the outer side wall of the housing (1) corresponding to the locking hole.

3. The resin profile raw material screening device according to claim 2, characterized in that: A sealing groove is provided on the right end face of the screening cylinder (6), and a sealing ring is provided in the sealing groove. A gap is provided between the partition (11) and the outer wall of the screening cylinder (6). A sealing groove is provided on the partition (11) in this gap, and a sealing ring is provided in the sealing groove.

4. The resin profile raw material screening device according to claim 1, characterized in that: The feeding auger includes a feeding cylinder fixed on the housing (1) and extending into the screening cylinder (6) at its left end. The feeding cylinder is provided with a feeding spiral plate (3) fixed on the conveying shaft (5). The right end of the conveying shaft (5) extends out of the feeding cylinder and is fixed with a driving mechanism. The top of the feeding cylinder is provided with a feeding hopper.

5. A resin profile raw material screening device according to claim 4, characterized in that: The drive mechanism includes a driven pulley fixed on the conveyor shaft (5), the driven pulley is connected to a drive pulley via a belt, the drive pulley is fixedly connected to a drive motor (18), and the drive motor (18) is fixed on the frame at the bottom of the housing (1).

6. The resin profile raw material screening device according to claim 1, characterized in that: The left end of the box (1) is provided with a closed opening, and a closed cover (12) is provided on the closed opening. A bearing supporting the left end of the conveying shaft (5) is provided in the middle of the closed cover (12). A keel sealing ring is provided on the right side of the bearing. A bearing cover fixed on the closed cover (12) is provided on the right side of the keel sealing ring. A quick-release mechanism is provided between the outer edge of the closed cover (12) and the box (1).

7. A resin profile raw material screening device according to claim 6, characterized in that: The quick-release mechanism includes a rotating seat fixed on the housing (1), a pin fixed on the rotating seat, a rotating sleeve rotatably mounted on the pin, a locking screw (24) fixed on the outer wall of the rotating sleeve, a locking block (25) that can slide along its axial direction on the locking screw (24), a locking nut (13) threadedly connected to the locking screw (24) on the outer side of the locking block (25), a spring (14) sleeved on the locking screw (24) on the inner side of the locking block (25), a sealing gasket between the sealing cover (12) and the housing (1), an inclined locking ramp on the locking block (25), and a locking cone that mates with the locking ramp at the outer left edge of the sealing cover (12).

8. The resin profile raw material screening device according to claim 1, characterized in that: The respirator includes a support flange (22) fixed to the outside of the top of the breathing tube (15), a breathing mesh (17) fixed to the outside of the top of the support flange (22), a breathing inner mesh (23) threaded to the top of the breathing tube (15), and a filter cotton (16) filling the space between the breathing inner mesh (23) and the breathing mesh (17).