A mixed feeding device for PVC plastic production
By designing a mixing and feeding device with an electric push rod and a linkage mechanism, the problem of PVC powder plastic blockage was solved, the continuity and efficiency of production were improved, and the uniformity of material mixing and product quality were enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG JINTIANCHENG PLASTIC PROD CO LTD
- Filing Date
- 2025-11-11
- Publication Date
- 2026-06-23
AI Technical Summary
The existing mixing and feeding devices in PVC plastic production are prone to blockage due to the agglomeration and adhesion of ultrafine powder plastic, which affects the continuity and efficiency of production. Moreover, manual unblocking poses safety hazards and is inefficient.
A mixing and feeding device was designed, comprising a feeding hopper, conveying pipe, discharging platform, strip plate, driving component, T-block, transmission assembly, rotating rod and blades. The device achieves real-time mixing of PVC powder through a linkage mechanism driven by an electric push rod and a motor, preventing blockage and improving mixing uniformity.
It effectively prevents bridging and blockage in the feed hopper, improves production continuity and efficiency, reduces the need for manual intervention, and enhances material uniformity and the performance consistency of the final product.
Smart Images
Figure CN224391586U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PVC plastic mixing and feeding technology, and specifically relates to a mixing and feeding device for PVC plastic production. Background Technology
[0002] In the PVC plastic production and processing, the mixing and feeding device is a key piece of equipment, and its operational stability directly affects production efficiency and product quality. Currently, the widely used mixing and feeding devices in the industry mainly consist of a feed hopper, a spiral conveyor pipe, and a drive mechanism. PVC powder plastic falls into the spiral conveyor pipe through the feed hopper and is pushed to the designated processing stage by the spiral blades. However, this type of traditional device has significant technical defects in practical applications: PVC powder plastic itself has a certain agglomeration characteristic, especially ultrafine PVC powder. When the raw material is damp, it is more prone to sticking together, causing the material to accumulate and adhere near the feed inlet of the spiral conveyor pipe on the lower inner side of the feed hopper, forming a bridging and blockage phenomenon.
[0003] This blockage problem not only causes feed interruptions, forcing production to halt, but also leads to localized compaction and deterioration due to prolonged material accumulation, affecting the uniformity of the final product's performance. Current technologies often employ manual unblocking to solve this problem, which increases the workload of operators, poses safety hazards, and is time-consuming, severely reducing production continuity and overall processing efficiency.
[0004] Therefore, we propose a mixing and feeding device for PVC plastic production. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a mixing and feeding device for PVC plastic production.
[0006] To achieve the above objectives, this utility model provides a mixing and feeding device for PVC plastic production, including a feeding hopper and a conveying pipe connected to its lower end. A discharge platform is fixedly connected to the upper edge of the rear end of the feeding hopper, and a strip plate is fixedly connected to the upper edge of the front end of the feeding hopper. A T-shaped block is connected to the upper part of the strip plate via a driving component. Multiple rotating columns are connected to the rear end of the T-shaped block via a transmission component. The lower ends of the multiple rotating columns are all connected to rotating rods via a connecting component. Multiple blades are fixedly connected to the outer wall of the multiple rotating rods near the lower edge. A limiting component is provided between the T-shaped block and the strip plate. Two support frames are symmetrically fixedly connected to the lower outer inclined surface of the feeding hopper.
[0007] In the above technical solution, the driving component further includes an electric push rod, which is fixedly connected to the lower end of the strip plate, and the telescopic shaft end of the electric push rod movably passes through the upper end of the strip plate. The telescopic shaft end of the electric push rod is fixedly connected to the lower end of the T-shaped block, and a block is fixedly connected to the lower end of the electric push rod. The block is fixedly connected to the outer wall of the feed hopper.
[0008] In the above technical solution, the transmission component further includes a square cone bucket, which is fixedly connected to the rear end of the T-shaped block, and a square plate is fixedly connected to the upper end of the square cone bucket. A motor is fixedly connected to the middle of the upper end of the square plate, and the rotating shaft of the motor movably passes through the middle of the upper end of the square plate. Multiple rotating columns are rotatably connected to the inner wall of the lower end of the square plate, and the multiple rotating columns are arranged in a ring around the center of the square plate. The multiple rotating columns movably pass through the outer wall of the square cone bucket, and a linkage mechanism is provided between the motor and the multiple rotating columns.
[0009] In the above technical solution, the linkage mechanism further includes multiple driven gears and a driving gear. The multiple driven gears are respectively fixedly sleeved on the outer wall of multiple rotating columns near the upper edge. The driving gear is fixedly connected to the rotating shaft end of the motor, and the driving gear meshes with the multiple driven gears.
[0010] In the above technical solution, the connecting component further includes a square sleeve and a groove. The square sleeve is fixedly connected to the lower end of the rotating column, and a trapezoidal block is movably passed through the middle of the rear end of the square sleeve. A stop block is fixedly connected to the rear end of the trapezoidal block. An elastic element is provided between the stop block and the square sleeve. The groove is opened in the upper inner wall of the rotating rod, and a cylinder is fixedly connected between the inner side walls of the groove. The outer wall of the cylinder fits against the upper end surface of the trapezoidal block.
[0011] In the above technical solution, the elastic element further includes a pull post, which is fixedly connected to the middle of the rear end of the stop block. A square cover is slidably sleeved on the outer wall of the pull post near the rear edge. The square cover is fixedly connected to the rear end of the square cover. A spring is slidably sleeved on the front part of the outer wall of the pull post. The spring is fixedly connected between the rear end of the stop block and the inner rear end face of the square cover. A pull ring is rotatably connected to the rear edge of the outer wall of the pull post.
[0012] In the above technical solution, the limiting member further includes two sliding rods, which are symmetrically arranged and fixedly connected to the upper end of the strip plate. The two sliding rods movably pass through the upper end of the T-shaped block, and the upper ends of the two sliding rods are fixedly connected to baffles. The two baffles are in contact with the upper end of the T-shaped block.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. Through the cooperation of the feeding hopper, conveying pipe, discharging platform, strip plate, driving component, T-block, transmission assembly, rotating rod, blade, limiting component and support component, this device can dynamically stir PVC powder plastic in real time, break the adsorption and adhesion between material particles, effectively avoid the formation of bridging blockage by ultrafine PVC powder or damp raw materials in the key area near the spiral conveying pipe on the lower inner side of the feeding hopper, and ensure the continuity of the feeding process from the root, greatly reducing the production interruption time caused by blockage.
[0015] 2. This mixing function not only avoids clogging but also premixes PVC powder plastic, improving the uniformity of material mixing and providing more stable raw materials for subsequent processing, which helps improve the performance consistency of the final PVC product. Compared with traditional manual unblocking methods, it requires no manual intervention, reducing the labor intensity and safety risks for operators, while also reducing the production time occupied by unblocking operations, significantly improving overall production efficiency. In addition, the multiple rotating rods on this device are easy to disassemble and install, making it easy to thoroughly clean the rotating rods and the blades on their outer walls. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the feed hopper of this utility model;
[0018] Figure 3 This is a cross-sectional view of the square plate and square cone bucket of this utility model;
[0019] Figure 4 This is a cross-sectional view of the square sleeve, rotating rod, and square cover of this utility model;
[0020] Figure 5 This is a disassembled structural diagram showing the components of this utility model, such as the square sleeve, rotating rod, and trapezoidal block.
[0021] The components represented by each number in the attached diagram are listed below: 1. Feed hopper; 2. Conveying pipe; 3. Discharging platform; 4. Strip plate; 5. Electric push rod; 6. Square block; 7. T-block; 8. Slide rod; 9. Baffle plate; 10. Square plate; 11. Square cone hopper; 12. Motor; 13. Drive gear; 14. Driven gear; 15. Rotating rod; 16. Blade; 17. Support frame; 18. Square sleeve; 19. Groove; 20. Cylinder; 21. Trapezoidal block; 22. Stop block; 23. Pull column; 24. Spring; 25. Pull ring; 26. Square cover; 27. Rotating column. Detailed Implementation
[0022] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] like Figure 1 - Figure 5 The PVC plastic production mixing and feeding device shown includes a feeding hopper 1 and a conveying pipe 2 connected to its lower end. A discharge platform 3 is fixedly connected to the upper edge of the rear end of the feeding hopper 1, and a strip plate 4 is fixedly connected to the upper edge of the front end of the feeding hopper 1. A T-shaped block 7 is connected to the top of the strip plate 4 through a driving component. Multiple rotating columns 27 are connected to the rear end of the T-shaped block 7 through a transmission component. The lower ends of the multiple rotating columns 27 are all connected to rotating rods 15 through a connecting component. Multiple blades 16 are fixedly connected to the outer wall of the multiple rotating rods 15 near the lower edge. A limiting component is provided between the T-shaped block 7 and the strip plate 4. Two support frames 17 are symmetrically fixedly connected to the lower outer inclined surface of the feeding hopper 1.
[0024] The driving component includes an electric push rod 5, which is fixedly connected to the lower end of the strip plate 4. The telescopic shaft end of the electric push rod 5 extends through the upper end of the strip plate 4, and the telescopic shaft end of the electric push rod 5 is fixedly connected to the lower end of the T-shaped block 7. A block 6 is fixedly connected to the lower end of the electric push rod 5, and the block 6 is fixedly connected to the outer wall of the feed hopper 1.
[0025] The transmission assembly includes a square cone bucket 11, which is fixedly connected to the rear end of the T-shaped block 7. A square plate 10 is fixedly connected to the upper end of the square cone bucket 11. A motor 12 is fixedly connected to the middle of the upper end of the square plate 10. The rotating shaft of the motor 12 passes through the middle of the upper end of the square plate 10. Multiple rotating columns 27 are rotatably connected to the inner wall of the lower end of the square plate 10. The multiple rotating columns 27 are arranged in a ring around the center of the square plate 10. The multiple rotating columns 27 pass through the outer wall of the square cone bucket 11. A linkage mechanism is provided between the motor 12 and the multiple rotating columns 27.
[0026] The linkage mechanism includes multiple driven gears 14 and driving gears 13. The multiple driven gears 14 are respectively fixedly sleeved on the outer wall of multiple rotating columns 27 near the upper edge. The driving gears 13 are fixedly connected to the rotating shaft end of the motor 12, and the driving gears 13 and the multiple driven gears 14 mesh with each other.
[0027] The connecting assembly includes a square sleeve 18 and a groove 19. The square sleeve 18 is fixedly connected to the lower end of the rotating column 27, and a trapezoidal block 21 is movably passed through the middle of the rear end of the square sleeve 18. A stop block 22 is fixedly connected to the rear end of the trapezoidal block 21. An elastic element is provided between the stop block 22 and the square sleeve 18. The groove 19 is opened in the upper inner wall of the rotating rod 15, and a cylinder 20 is fixedly connected between the inner side walls of the groove 19. The outer wall of the cylinder 20 fits against the upper end surface of the trapezoidal block 21.
[0028] The elastic element includes a pull post 23, which is fixedly connected to the middle of the rear end of the stop block 22. A square cover 26 is slidably sleeved on the outer wall of the pull post 23 near the rear edge. The square cover 26 is fixedly connected to the rear end of the square sleeve 18. A spring 24 is slidably sleeved on the front part of the outer wall of the pull post 23. The spring 24 is fixedly connected between the rear end of the stop block 22 and the inner rear end face of the square cover 26. A pull ring 25 is rotatably connected to the rear edge of the outer wall of the pull post 23.
[0029] The limiting component includes two sliding rods 8, which are symmetrically arranged and fixedly connected to the upper end of the strip plate 4. The two sliding rods 8 also extend through the upper end of the T-shaped block 7. Each of the two sliding rods 8 has a baffle 9 fixedly connected to its upper end, and the two baffles 9 fit against the upper end of the T-shaped block 7.
[0030] Working principle: When using this device to mix and feed PVC powder plastic, the bagged PVC powder plastic is first poured into the feeding hopper 1 through the pouring platform 3. Then, the electric push rod 5 is started. The reciprocating movement of the telescopic shaft of the electric push rod 5 drives the T-shaped block 7 to move up and down synchronously. The T-shaped block 7 drives the square cone hopper 11 and the square plate 10 to move up and down synchronously. The square plate 10 drives multiple rotating columns 27, driven gears 14, motors 12 and driving gears 13 to move up and down synchronously. During this process, the T-shaped block 7 can slide up and down along the outer wall of the two sliding rods 8, which makes the T-shaped block 7 more stable when moving up and down; at the same time, the motor 12 is connected to an external power source, and the rotating shaft of the motor 12 can drive the driving gear 13 to rotate synchronously. The driving gear 13 can drive multiple driven gears 14 to rotate synchronously. The multiple driven gears 14 can drive the rotating column 27, square sleeve 18, trapezoidal block 21, rotating rod 15, cylinder 20 and other components to rotate synchronously. The rotating rod 15 can drive multiple blades 16 on its outer wall to rotate synchronously.
[0031] Finally, the rotating rod 15 and the multiple blades 16 on its outer wall can rotate and move up and down repeatedly. During this process, the rotating rod 15 and the multiple blades 16 on its outer wall can stir and mix the PVC powder plastic inside the feed hopper 1, which can prevent the PVC powder plastic at the lower end of the feed hopper 1 from forming bridging blockages, making the PVC powder plastic more smoothly conveyed by the conveying pipe 2.
[0032] When the rotating rod 15 and its outer wall multi-blade 16 need to be disassembled and cleaned in the non-working state, first, hold the rotating rod 15 with one hand and pull the corresponding pull ring 25 backward with the other hand. The pull ring 25 can drive the pull column 23, the stop block 22 and the trapezoidal block 21 to move backward synchronously. During this process, when the stop block 22 moves backward, it will compress the spring 24 between the stop block 22 and the square cover 26 until the trapezoidal block 21 is separated from the corresponding cylinder 20. Then, pull the rotating rod 15 downward and release the pull ring 25. At this time, under the action of the spring 24, the stop block 22 and the trapezoidal block 21 can be reset.
[0033] Subsequently, when it is necessary to connect the cleaned rotating rod 15 to the square sleeve 18, first insert the rotating rod 15 into the lower inner wall of the square sleeve 18, rotating it as it is inserted, until the groove 19 at the upper end of the rotating rod 15 corresponds to the trapezoidal block 21. Then, continue to insert the rotating rod 15 upwards into the square sleeve 18. When the outer wall of the cylinder 20 fits against the outer inclined surface of the trapezoidal block 21, continue to apply force to insert the rotating rod 15 upwards into the square sleeve 18. During this process, the cylinder 20's... The outer wall will press the trapezoidal block 21 backward along the outer inclined surface of the trapezoidal block 21 and compress the spring 24 until the cylinder 20 moves to the upper end of the trapezoidal block 21. Finally, under the action of the spring 24, the trapezoidal block 21 can be reset. Then the rotating rod 15 is released, and the rotating rod 15 can be connected with the square sleeve 18. Similarly, other rotating rods 15 can be disassembled and connected with the corresponding square sleeves 18, so as to facilitate the thorough cleaning of the rotating rod 15 and the multiple blades 16 on its outer wall.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A mixing and feeding device for PVC plastic production, comprising a feeding hopper (1) and a conveying pipe (2) connected to its lower end, characterized in that: A pouring platform (3) is fixedly connected to the upper edge of the rear end of the feeding hopper (1), and a strip plate (4) is fixedly connected to the upper edge of the front end of the feeding hopper (1). A T-shaped block (7) is connected above the strip plate (4) through a driving component. Multiple rotating columns (27) are connected to the rear end of the T-shaped block (7) through a transmission component. The lower ends of the multiple rotating columns (27) are all connected to rotating rods (15) through a connecting component. Multiple blades (16) are fixedly connected to the outer wall of the multiple rotating rods (15) near the lower edge. A limiting component is provided between the T-shaped block (7) and the strip plate (4). Two support frames (17) are symmetrically fixedly connected to the lower outer inclined surface of the feeding hopper (1).
2. The mixing and feeding device for PVC plastic production according to claim 1, characterized in that: The driving component includes an electric push rod (5), which is fixedly connected to the lower end of the strip plate (4), and the telescopic shaft end of the electric push rod (5) extends through the upper end of the strip plate (4). The telescopic shaft end of the electric push rod (5) is fixedly connected to the lower end of the T-shaped block (7), and a block (6) is fixedly connected to the lower end of the electric push rod (5). The block (6) is fixedly connected to the outer wall of the feed hopper (1).
3. The mixing and feeding device for PVC plastic production according to claim 1, characterized in that: The transmission assembly includes a square cone bucket (11), which is fixedly connected to the rear end of the T-shaped block (7). A square plate (10) is fixedly connected to the upper end of the square cone bucket (11). A motor (12) is fixedly connected to the middle of the upper end of the square plate (10). The rotating shaft of the motor (12) passes through the middle of the upper end of the square plate (10). Multiple rotating columns (27) are rotatably connected to the inner wall of the lower end of the square plate (10). The multiple rotating columns (27) are arranged in a ring around the center of the square plate (10). The multiple rotating columns (27) pass through the outer wall of the square cone bucket (11). A linkage mechanism is provided between the motor (12) and the multiple rotating columns (27).
4. The mixing and feeding device for PVC plastic production according to claim 3, characterized in that: The linkage mechanism includes multiple driven gears (14) and driving gears (13). The multiple driven gears (14) are respectively fixedly sleeved on the outer wall of multiple rotating columns (27) near the upper edge. The driving gears (13) are fixedly connected to the rotating shaft end of the motor (12), and the driving gears (13) mesh with the multiple driven gears (14).
5. A mixing and feeding device for PVC plastic production according to claim 1, characterized in that: The connecting assembly includes a square sleeve (18) and a groove (19). The square sleeve (18) is fixedly connected to the lower end of the rotating column (27), and a trapezoidal block (21) is movably passed through the middle of the rear end of the square sleeve (18). A stop block (22) is fixedly connected to the rear end of the trapezoidal block (21). An elastic element is provided between the stop block (22) and the square sleeve (18). The groove (19) is opened in the upper inner wall of the rotating rod (15), and a cylinder (20) is fixedly connected between the inner side walls of the groove (19). The outer wall of the cylinder (20) is in contact with the upper end surface of the trapezoidal block (21).
6. The mixing and feeding device for PVC plastic production according to claim 5, characterized in that: The elastic element includes a pull post (23), which is fixedly connected to the middle of the rear end of the stop block (22). A square cover (26) is slidably sleeved on the outer wall of the pull post (23) near the rear edge. The square cover (26) is fixedly connected to the rear end of the square sleeve (18). A spring (24) is slidably sleeved on the front of the outer wall of the pull post (23). The spring (24) is fixedly connected between the rear end of the stop block (22) and the inner rear end face of the square cover (26). A pull ring (25) is rotatably connected to the rear edge of the outer wall of the pull post (23).
7. A mixing and feeding device for PVC plastic production according to claim 1, characterized in that: The limiting component includes two sliding rods (8), which are symmetrically arranged and fixedly connected to the upper end of the strip plate (4). The two sliding rods (8) are movably passed through the upper end of the T-shaped block (7), and the upper ends of the two sliding rods (8) are fixedly connected to baffles (9). The two baffles (9) are in contact with the upper end of the T-shaped block (7).