Anti-blocking servo feeding mechanism of double-screw extruder
By introducing a limiting rod and a sector block adjustment assembly into the feeding device of a twin-screw extruder, the problem of material accumulation and blockage was solved, achieving smooth material conveying and production stability, and reducing safety risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-07
AI Technical Summary
Existing twin-screw extruder feeding devices cannot effectively mix multiple materials when added, and are prone to clogging due to material agglomeration and the formation of large lumps, affecting production stability and safety.
A servo feeding mechanism for a twin-screw extruder designed to prevent clogging. By using the expansion port and the adjustment components inside the feeding tube, and with the cooperation of the limiting rod, sector block and clamping rod, the inner wall of the feeding tube is closed and the raw material is pushed to prevent clogging.
It effectively prevents blockage inside the feeding pipe, ensures smooth material transport, improves production stability, and reduces safety hazards.
Smart Images
Figure CN224089618U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of twin-screw extruder technology, and more specifically, to a servo feeding mechanism for an anti-clogging twin-screw extruder. Background Technology
[0002] Twin-screw extruders were developed based on single-screw extruders and are generally used in conjunction with a feeding mechanism to input raw materials into the twin-screw extruder. However, existing feeding devices often use a single inlet, meaning that when multiple materials are added, they are all added through this single inlet, making material mixing inconvenient. Furthermore, during the feeding process, existing feeding mechanisms can cause materials to aggregate and form large lumps, which, if not promptly crushed or cut, can easily lead to blockages.
[0003] Currently, twin-screw extruders are commonly used for granulation in plastic production. However, in actual production, due to the various performance requirements of some products, directly feeding materials into the twin-screw extruder can cause granular materials to arch or become clogged at the feed port due to excessive particle size. Large quantities of side-feed materials with different properties are often carried along with the screws to the tail edge of the feed hole and into the extruder unit. This leads to unbalanced feeding, slow feeding speed, and even material overflow. The production process is highly unstable, forcing personnel to frequently operate the equipment at high temperatures, which increases safety hazards.
[0004] To address the aforementioned issues, this application provides a servo feeding mechanism for an anti-clogging twin-screw extruder. Utility Model Content
[0005] The anti-clogging servo feeding mechanism for a twin-screw extruder provided in this application adopts the following technical solution:
[0006] A servo feeding mechanism for an anti-clogging twin-screw extruder includes an expansion port. A feeding tube is fixedly connected to the lower end of the expansion port. An adjustment assembly is provided inside the expansion port and the feeding tube. The adjustment assembly includes a connecting plate fixedly connected to the inner wall of the expansion port. A collar is fixedly connected to the inner wall of the connecting plate. The collar is located at the center inside the expansion port. A limit rod is slidably connected through the inside of the collar. A vertical rod is slidably connected through the inside of the limit rod. A locking rod is provided at the upper end of the vertical rod.
[0007] Furthermore, a second baffle is fixedly connected to the lower end of the limiting rod, and a long rod is fixedly connected to the lower end of the limiting rod. A first sector block is evenly fixedly connected to the lower outer surface of the long rod.
[0008] Through the above technical solution, the first sector block is used to block the raw material and pull the raw material to move, and the second baffle is used to limit the limit rod to prevent the limit rod from disengaging from the collar.
[0009] Furthermore, a first baffle is fixedly connected to the upper end of the limiting rod, and a handle is fixedly connected to the upper end of the first baffle. A through groove is provided through the upper end of the handle, and a first slot and a second slot are provided through the upper end of the handle. The through groove also passes through the center of the interior of the first baffle, the limiting rod, the second baffle, and the long rod.
[0010] Through the above technical solution, the first baffle is used to limit the limit rod to prevent it from detaching from the collar, the slot facilitates the free passage of the vertical rod, and the handle facilitates pulling the limit rod to move along the collar.
[0011] Furthermore, a second sector block is fixedly connected to the lower outer surface of the vertical rod, and a top plate is fixedly connected to the upper end of the vertical rod. A through hole is opened through the upper end of the top plate, and the vertical rod passes through the interior of the through groove. The top plate is located above the handle, and the second sector block is attached to the lower end of the first sector block. The through hole is connected to the first slot and also to the second slot.
[0012] Through the above technical solution, the cooperation between the second sector block and the first sector block is used to adjust the feeding rate of the feeding tube. The complete offset between the second sector block and the first sector block can completely cover the inner wall of the feeding tube, so as to drive the movement of the raw materials inside the feeding tube.
[0013] Furthermore, the locking rod passes through the interior of the perforation and is slidably engaged with the first locking slot, and the locking rod also passes through the interior of the perforation and is slidably engaged with the second locking slot.
[0014] The above technical solution uses a lever to fix the top plate to the upper end of the handle.
[0015] In summary, this application includes the following beneficial technical effects:
[0016] This application can fix the second sector block to the lower end of the first sector block by means of a clamp. The inner wall of the feeding tube is closed by the cooperation between the second sector block and the first sector block. The raw material is pushed out from the inner wall of the feeding tube and moved into the expansion port by the cooperation between the second sector block and the first sector block, thereby preventing the inside of the feeding tube from being blocked by the raw material. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this application;
[0018] Figure 2 This is a schematic diagram of the expansion port and feed tube structure of this application;
[0019] Figure 3 This is a schematic diagram of the limiting rod structure in this application;
[0020] Figure 4 This is a schematic diagram of the vertical rod structure of this application;
[0021] Figure 5 For the purposes of this application Figure 1 Enlarged view of point A in the middle.
[0022] Explanation of the labels in the diagram:
[0023] 1. Expansion port; 2. Feeding pipe; 3. Adjustment component; 31. Connecting plate; 311. Collar; 32. Limiting rod; 321. First baffle; 3211. Handle; 32111. Through slot; 32112. First slot; 32113. Second slot; 322. Second baffle; 3221. Long rod; 32211. First sector block; 33. Vertical rod; 331. Second sector block; 332. Top plate; 3321. Through hole; 34. Locking rod. Detailed Implementation
[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] Example:
[0028] This application discloses an anti-clogging servo feeding mechanism for a twin-screw extruder. Please refer to [link / reference]. Figures 1-5 It includes an expansion port 1, with a feeding pipe 2 fixedly connected to the lower end of the expansion port 1. An adjustment component 3 is provided inside the expansion port 1 and the feeding pipe 2. The adjustment component 3 includes a connecting plate 31 fixedly connected to the inner wall of the expansion port 1. A collar 311 is fixedly connected to the inner wall of the connecting plate 31. The collar 311 is located at the center inside the expansion port 1. A limit rod 32 is slidably connected through the inside of the collar 311. A vertical rod 33 is slidably connected through the inside of the limit rod 32. A locking rod 34 is provided through the upper end of the vertical rod 33.
[0029] Furthermore, a second baffle 322 is fixedly connected to the lower end of the limiting rod 32, and a long rod 3221 is fixedly connected to the lower end of the limiting rod 32. A first sector block 32211 is evenly fixedly connected to the outer surface of the lower end of the long rod 3221.
[0030] Through the above technical solution, the first sector block 32211 is used to block the raw material and pull the raw material to move, and the second baffle 322 is used to limit the limiting rod 32 to prevent the limiting rod 32 from disengaging from the collar 311.
[0031] Furthermore, a first baffle 321 is fixedly connected to the upper end of the limiting rod 32, and a handle 3211 is fixedly connected to the upper end of the first baffle 321. A through groove 32111 is provided through the upper end of the handle 3211, and a first slot 32112 and a second slot 32113 are provided at the upper end of the handle 3211. The through groove 32111 also passes through the internal center position of the first baffle 321, the limiting rod 32, the second baffle 322 and the long rod 3221.
[0032] Through the above technical solution, the first baffle 321 is used to limit the limit rod 32 to prevent the limit rod 32 from disengaging from the collar 311, the through groove 32111 facilitates the free passage of the vertical rod 33, and the handle 3211 facilitates pulling the limit rod 32 to move along the collar 311.
[0033] Furthermore, a second sector block 331 is fixedly connected to the lower outer surface of the vertical rod 33, and a top plate 332 is fixedly connected to the upper end of the vertical rod 33. A through hole 3321 is provided through the upper end of the top plate 332, and the vertical rod 33 passes through the interior of the through groove 32111. The top plate 332 is located above the handle 3211. The second sector block 331 is attached to the lower end of the first sector block 32211. The through hole 3321 is connected to the first slot 32112 and also to the second slot 32113.
[0034] Through the above technical solution, the cooperation between the second sector block 331 and the first sector block 32211 is used to adjust the feeding rate of the feeding pipe 2. The complete offset between the second sector block 331 and the first sector block 32211 can completely cover the inner wall of the feeding pipe 2, so as to drive the raw materials inside the feeding pipe 2 to move.
[0035] Furthermore, the locking rod 34 passes through the interior of the through hole 3321 and is slidably engaged with the first locking groove 32112. The locking rod 34 also passes through the interior of the through hole 3321 and is slidably engaged with the second locking groove 32113.
[0036] Through the above technical solution, the lever 34 is used to fix the top plate 332 to the upper end of the handle 3211.
[0037] The implementation principle of this embodiment is as follows: When raw materials accumulate inside the feeding pipe 2, causing blockage and requiring unblocking, the operator first needs to pull the clamping rod 34 to separate it from the first clamping groove 32112. Then, the top plate 332 can be rotated to drive the vertical rod 33 to rotate inside the through groove 32111. Under the action of the vertical rod 33, the second sector block 331 will rotate against the lower end of the first sector block 32211. After rotating the through hole 3321 to the upper end of the second clamping groove 32113, the second sector block 331 can be rotated to be completely misaligned with the first sector block 32211 under the action of the vertical rod 33. In the next step, the clamping rod 34 can be inserted through the inside of the through hole 3321 to form a locking and limiting position with the second clamping groove 32113. At this time, under the mutual cooperation of the second sector block 331 and the first sector block 32211, the inner wall of the feeding tube 2 can be closed. Then, the operator can pull the handle 3211, thereby driving the second sector block 331 and the first sector block 32211 to move upward along the inner wall of the feeding tube 2 simultaneously. Under the action of the second sector block 331 and the first sector block 32211, the raw material can be pushed out from the inner wall of the feeding tube 2 and moved into the expansion port 1, thereby preventing the inside of the feeding tube 2 from being blocked by the raw material.
[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A servo feeding mechanism for an anti-clogging twin-screw extruder, comprising an expansion port (1), wherein a feeding pipe (2) is fixedly connected to the lower end of the expansion port (1), characterized in that: An adjustment assembly (3) is provided inside the expansion port (1) and the feeding tube (2). The adjustment assembly (3) includes a connecting plate (31) fixedly connected to the inner wall of the expansion port (1). A collar (311) is fixedly connected to the inner wall of the connecting plate (31). The collar (311) is located at the center inside the expansion port (1). A limit rod (32) is slidably connected through the inside of the collar (311). A vertical rod (33) is slidably connected through the inside of the limit rod (32). A locking rod (34) is provided through the upper end of the vertical rod (33).
2. The anti-clogging servo feeding mechanism for a twin-screw extruder according to claim 1, characterized in that: The lower end of the limiting rod (32) is fixedly connected to a second baffle (322), and the lower end of the limiting rod (32) is fixedly connected to a long rod (3221). The lower outer surface of the long rod (3221) is uniformly fixedly connected to a first sector block (32211).
3. The anti-clogging servo feeding mechanism for a twin-screw extruder according to claim 1, characterized in that: The upper end of the limiting rod (32) is fixedly connected to a first baffle (321), and the upper end of the first baffle (321) is fixedly connected to a handle (3211). The upper end of the handle (3211) is provided with a through groove (32111), and the upper end of the handle (3211) is provided with a first slot (32112) and a second slot (32113). The through groove (32111) also passes through the center of the interior of the first baffle (321), the limiting rod (32), the second baffle (322), and the long rod (3221).
4. The anti-clogging servo feeding mechanism for a twin-screw extruder according to claim 1, characterized in that: A second sector block (331) is fixedly connected to the lower outer surface of the vertical rod (33), and a top plate (332) is fixedly connected to the upper end of the vertical rod (33). A through hole (3321) is provided through the upper end of the top plate (332).
5. The anti-clogging servo feeding mechanism for a twin-screw extruder according to claim 4, characterized in that: The vertical rod (33) passes through the interior of the through slot (32111), the top plate (332) is located above the handle (3211), the second sector block (331) is attached to the lower end of the first sector block (32211), the through hole (3321) is connected to the first slot (32112), and the through hole (3321) is also connected to the second slot (32113).
6. The anti-clogging servo feeding mechanism for a twin-screw extruder according to claim 5, characterized in that: The lever (34) passes through the inside of the through hole (3321) and is slidably engaged with the first slot (32112). The lever (34) also passes through the inside of the through hole (3321) and is slidably engaged with the second slot (32113).