Glass fiber anti-bridging stirring and discharging device

Abstract

The utility model discloses a kind of glass fiber anti-bridging mixing and discharging device, it is related to the field of plastic processing equipment, including discharging hopper, first stirring assembly and second stirring assembly;Discharging hopper inside is equipped with discharging cavity, by setting first stirring assembly in discharging cavity bottom, prevent material accumulation or stagnation in bottom, ensure the stability of discharging process, reduce the risk of equipment downtime caused by material blockage, by second stirring assembly is arranged in discharging cavity and is eccentric arrangement relative to discharging hopper center axis, second stirring assembly can form asymmetric stirring disturbance effect when being active, dynamically intervene and destroy the stable bridging stress structure formed by glass fiber material due to friction between fibers and cohesion, effectively prevent local accumulation, improve the anti-blocking performance of discharging device when handling high-filled glass fiber material, ensure the continuity and stability of feeding to downstream twin-screw extruder, improve product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment technology, specifically to a glass fiber anti-bridging mixing and feeding device. Background Technology

[0002] In the plastics processing industry, twin-screw extruders are used as key equipment in the mixing and extrusion molding of various plastic materials. When it comes to the production of glass fiber reinforced plastics, stable feeding from the hopper is one of the core links to ensure production continuity and product quality.

[0003] Traditional twin-screw extruders typically use a single rotating impeller in their hoppers, relying solely on blade rotation to agitate and disperse materials. This often leads to bridging, a phenomenon where material tends to accumulate above the rotating impeller, gradually forming a stable arched stress structure within the hopper and hindering normal descent. Once bridging occurs, it triggers a series of production problems: firstly, unstable feed flow leads to irregular material filling within the twin-screw extruder barrel, resulting in quality defects such as dimensional fluctuations and uneven mechanical properties in the extruded products; secondly, frequent bridging requires manual shutdown for cleaning, severely disrupting production, reducing equipment uptime, and increasing operating costs.

[0004] In the prior art, in order to prevent bridging, traditional feeding hoppers generally use horizontal rotating agitators to disturb the material. However, such devices have obvious limitations: their agitators can only achieve a single horizontal rotational motion, and their range of action is limited. They cannot effectively penetrate and dynamically destroy the bridging structure that has already formed in the upper layer of the hopper. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a fiberglass anti-bridging mixing and feeding device.

[0006] The objective of this utility model can be achieved through the following technical solution: a fiberglass anti-bridging mixing and feeding device, comprising: The hopper, the first mixing component, and the second mixing component; The inner side of the hopper is provided with a feeding chamber. The first stirring component is disposed at the bottom of the feeding chamber. The second stirring component is connected to the first stirring component through a transmission part. The second stirring component is disposed in the feeding chamber and is eccentrically arranged relative to the central axis of the hopper. The external drive device is connected to the first stirring component and drives the first stirring component to move. When the first stirring component moves, it drives the second stirring component to move through the transmission part.

[0007] As a further embodiment of this utility model: the first stirring assembly includes a movable rod and an arc-shaped scraper disposed on the movable rod; The arc-shaped scraper fits the inner wall of the bottom of the feeding chamber, the central axis of the movable rod coincides with the central axis of the feeding hopper, a drive rod is vertically connected to the movable rod, and the drive rod passes through the feeding hopper and is connected to an external driving device.

[0008] As a further embodiment of this utility model: the drive rod is connected to the center of the movable rod, and both ends of the movable rod are connected to arc-shaped scrapers, with the two arc-shaped scrapers being centrally symmetrical around the center of the movable rod.

[0009] As a further embodiment of this utility model: one end of the arc-shaped scraper away from the movable rod is connected to a second stirring assembly via a transmission part; The transmission unit includes a mounting column disposed on the arc-shaped scraper. The mounting column is offset from the rotation axis of the drive rod. A transmission sleeve is movably sleeved on the mounting column. A baffle is connected to the mounting column. The transmission sleeve is connected to the second stirring assembly. A support frame is provided on the inner wall of the hopper to prevent the second mixing component from tipping over.

[0010] As a further embodiment of this utility model: the second stirring assembly includes a stirring rod fixedly connected to the transmission sleeve, and stirring blades disposed on the stirring rod; the support frame has a support frame surrounding the stirring rod.

[0011] As a further embodiment of this utility model: the stirring blades are provided in at least three sets, and the distance between any two adjacent sets of stirring blades is 120mm.

[0012] As a further embodiment of this utility model: the stirring blade includes multiple stirring blades, which are arranged in a ring around the central axis of the movable rod.

[0013] As a further embodiment of this invention, the stirring plate is rhomboid in shape.

[0014] As a further embodiment of this invention, the stirring plate is wavy.

[0015] As a further embodiment of this utility model: the hopper is a cone-shaped structure, wider at the top and narrower at the bottom, with a discharge port at its bottom.

[0016] The beneficial effects of this utility model are as follows: When this device is working, the external drive device is started to drive the first stirring component to rotate. The first stirring component stirs the bottom of the feeding chamber. The first stirring component drives the second stirring component to move through the transmission part. The second stirring component stirs at an eccentric position relative to the inside of the feeding hopper. The bridging in the lower, middle and upper parts of the feeding hopper can be effectively destroyed.

[0017] By installing a first stirring component at the bottom of the feeding chamber, material accumulation or retention at the bottom is prevented, ensuring the stability of the feeding process and reducing the risk of equipment downtime due to material blockage. The second stirring component is set in the feeding chamber and eccentrically arranged relative to the central axis of the feeding hopper. When the second stirring component moves, it can form an asymmetric stirring disturbance effect, dynamically intervening in and disrupting the stable bridging stress structure formed by the friction and cohesion between fibers of the glass fiber material. This effectively prevents local accumulation, improves the anti-blocking performance of the feeding device when processing highly filled glass fiber materials, ensures the continuity and stability of material supply to the downstream twin-screw extruder, and improves product quality and production efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the feeding hopper according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model; Figure 4 This is another perspective of the internal structure schematic diagram of an embodiment of this utility model; Figure 5 This is a side view of the internal structure of an embodiment of the present utility model; Figure 6 This is a schematic diagram of the wave-shaped stirring plate according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Feed hopper; 2. First stirring assembly; 3. Second stirring assembly; 11. Feeding chamber; 4. Transmission unit; 21. Movable rod; 22. Arc-shaped scraper; 23. Drive rod; 41. Mounting column; 42. Transmission sleeve; 43. Baffle; 33. Support frame; 31. Stirring rod; 32. Stirring blade; 331. Support frame; 321. Stirring disc; 12. Discharge port. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-4An embodiment of the present invention provides a fiberglass anti-bridging mixing and feeding device, comprising: a feeding hopper 1, a first mixing component 2, and a second mixing component 3; a feeding chamber 11 is provided inside the feeding hopper 1, the first mixing component 2 is disposed at the bottom of the feeding chamber 11, and the second mixing component 3 is connected to the first mixing component 2 through a transmission part 4. The second mixing component 3 is disposed in the feeding chamber 11 and is eccentrically arranged relative to the central axis of the feeding hopper 1, and the movement path of the second mixing component 3 is not located on the central axis of the feeding hopper 1; an external driving device is connected to the first mixing component 2 and drives the first mixing component 2 to move. In this embodiment, the external driving device can be a drive motor. When the first mixing component 2 moves, it drives the second mixing component 3 to move through the transmission part 4.

[0023] Specifically, when this device is working, the external drive device is started to drive the first stirring component 2 to rotate. The first stirring component 2 stirs the bottom of the feeding chamber 11. The first stirring component 2 drives the second stirring component 3 to move through the transmission part 4. The second stirring component 3 stirs at an eccentric position relative to the inside of the feeding hopper 1. The bridging in the lower, middle and upper parts of the feeding hopper 1 can be effectively destroyed.

[0024] By setting a first stirring component 2 at the bottom of the feeding chamber 11, material accumulation or retention at the bottom is prevented, ensuring the stability of the feeding process and reducing the risk of equipment downtime caused by material blockage. The second stirring component 3 is set in the feeding chamber 11 and is eccentrically arranged relative to the central axis of the feeding hopper 1. When the second stirring component 3 moves, it can form an asymmetric stirring disturbance effect, dynamically intervening in and destroying the stable bridging stress structure formed by the friction and cohesion between the fibers of the glass fiber material, effectively preventing local accumulation, improving the anti-blocking performance of the feeding device when processing highly filled glass fiber materials, ensuring the continuity and stability of the material supply to the downstream twin-screw extruder, and improving product quality and production efficiency.

[0025] See Figures 1-4 Optionally, the first stirring assembly 2 includes a movable rod 21 and an arc-shaped scraper 22 welded and fixed to the movable rod 21; the shape of the arc-shaped scraper 22 fits the inner wall of the bottom of the feeding chamber 11, the central axis of the movable rod 21 coincides with the central axis of the feeding hopper 1, and a drive rod 23 is vertically connected to the movable rod 21, the drive rod 23 passes through the feeding hopper 1 and is connected to an external driving device.

[0026] In this embodiment, the central axis of the movable rod 21 coincides with the central axis of the hopper 1, ensuring the centering stability of the first stirring assembly 2. After the external driving device is started, it drives the driving rod 23 to rotate in a direction perpendicular to the movable rod 21, causing the movable rod 21 to rotate synchronously with the driving rod 23 as the central axis of motion. This allows the arc-shaped scraper 22 to scrape the arc-shaped inner wall at the bottom of the hopper 1 back and forth, effectively removing the glass fiber material that adheres to or accumulates at the bottom and lower edge of the side wall of the conical hopper. This prevents the material from stagnating and accumulating in the dead corner at the bottom, thereby avoiding blockages that may be caused by local accumulation and ensuring the smooth flow of the discharge port 12.

[0027] See Figures 1-4 Optionally, the drive rod 23 is connected to the center of the movable rod 21, and both ends of the movable rod 21 are connected to arc-shaped scrapers 22. The two arc-shaped scrapers 22 are centrally symmetrical about the center of the movable rod 21, and the two arc-shaped scrapers 22 are 180 degrees apart.

[0028] In this embodiment, the symmetrical design of the two arc-shaped scrapers 22 makes the force on both sides of the discharge chamber 11 uniform, avoiding equipment vibration and uneven wear caused by the force on one side of the discharge chamber 11. At the same time, the symmetrical scrapers can achieve more comprehensive coverage of the bottom material, ensuring the smooth flow of the discharge port 12.

[0029] See Figures 1-5 Optionally, one end of one of the arc-shaped scrapers 22 away from the movable rod 21 is connected to the second stirring assembly 3 via the transmission part 4; the transmission part 4 includes a mounting column 41 fixedly disposed on the side of the arc-shaped scraper 22, the mounting column 41 being offset from the rotation axis of the drive rod 23, a transmission sleeve 42 being movably sleeved on the mounting column 41, and a baffle 43 being connected to the mounting column 41, the baffle 43 being used to prevent the second stirring assembly 3 and the transmission sleeve 42 from falling off the mounting column 41, the transmission sleeve 42 being fixedly connected to the second stirring assembly 3; a support frame 33 is provided on the inner wall of the hopper 1, the support frame 33 being used to prevent the second stirring assembly 3 from tipping over and also limiting the movement space of the second stirring assembly 3.

[0030] In this embodiment, the transmission unit 4 cleverly transforms the rotational motion in the horizontal plane into a composite motion in the vertical direction: when the first stirring assembly 2 rotates under the drive of the external driving device, the mounting column 41, which is fixed to the side of the arc-shaped scraper 22 and deviates from the rotation axis, moves in a circle around the rotation axis of the driving column. This circular motion is transmitted to the second stirring assembly 3 through the transmission sleeve 42 that is movably sleeved on the mounting column 41, thereby driving the second stirring assembly 3 to move. The second stirring assembly 3 oscillates due to the eccentric effect, thereby forming an asymmetrical stirring disturbance in the hopper. During this process, the support frame 33 provides circumferential support to the second stirring assembly 3.

[0031] See Figures 1-5Optionally, the second stirring assembly 3 includes a stirring rod 31 fixedly connected to the transmission sleeve 42, and a stirring blade 32 disposed on the stirring rod 31; the support frame 33 has a support frame 331 surrounding the stirring rod 31, the support frame 331 is used to prevent the stirring rod 31 from tipping over, and also limits the activity space of the second stirring assembly 3, and there is no interference between the support rod and the stirring blade 32.

[0032] In this embodiment, when the transmission sleeve 42 moves, it drives the bottom of the stirring rod 31 to make synchronous circular motion. Because the support frame 331 provides support for the stirring rod 31, the upper part of the stirring rod 31 can only move within a small range, preventing the stirring rod 31 from tilting over or detaching from the support rod. The stirring rod 31 and the stirring blade 32 can swing, and the whole can move up and down a certain distance.

[0033] See Figures 3-5 Optionally, the stirring blades 32 are provided with at least three sets, and the distance between any two adjacent sets of stirring blades 32 is 120mm.

[0034] In this embodiment, at least three sets of stirring blades 32 are evenly distributed along the axial direction of the stirring rod 31, covering a large vertical space from the upper part of the hopper to near the discharge port. This multi-layer design achieves three-dimensional stirring. The upper stirring blades 32 are responsible for breaking the initially formed loose bridging, the middle stirring blades 32 continuously disturb the material, and the lower stirring blades 32 perform final dispersion before the material falls. This solves the problem that traditional single horizontal stirring paddles cannot effectively act on the upper layer of material in the hopper. In addition, the reasonable spacing between the stirring blades 32 can also prevent motion interference between the stirring blades 32 and the support frame 33. Furthermore, the eccentric movement of the stirring blades 32 allows them to impact the bridging structure formed by the intertwined glass fibers from multiple angles, effectively disrupting its stress balance.

[0035] See Figures 3-5 Optionally, the stirring blade 32 includes a plurality of stirring blades 321, which are arranged in a ring around the central axis of the movable rod 21.

[0036] In this embodiment, multiple stirring blades 321 form multiple stirring endpoints on the same horizontal cross section, which increases the contact points and range of action with the material and avoids the stirring blind zone that may be generated by a single stirring blade 321.

[0037] See Figures 3-5 Optionally, the stirring plate 321 is diamond-shaped.

[0038] In this embodiment, during the eccentric motion, the sharp edges and inclined surfaces of the rhomboid stirring blade 321 cut into the material at a specific angle, which has the dual functions of stirring and promoting feeding. It can adapt to glass fiber materials with different stacking thicknesses and flow characteristics, and improve the applicability and stability of the feeding process. The inclination angle of the stirring blade 321 is 30° to 60°.

[0039] See Figure 6 Optionally, the stirring plate 321 is wavy.

[0040] In this embodiment, the wave-shaped stirring blade 321 exerts a gentle kneading and pushing effect on the glass fiber material through its continuously undulating contour, which can effectively disintegrate the bridging structure.

[0041] See Figures 1-2 Optionally, the hopper 1 is a cone-shaped container that is wider at the top and narrower at the bottom, with a discharge port 12 at its bottom.

[0042] In this embodiment, the material can naturally gather towards the center under the action of gravity, and after being stirred, it is stably discharged from the bottom outlet 12. This structure effectively reduces the hanging and retention of material on the side wall and ensures the smooth flow of material.

[0043] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A fiberglass anti-bridging mixing and feeding device, characterized in that, include: The feeding hopper (1), the first stirring component (2), and the second stirring component (3); The inner side of the hopper (1) is provided with a feeding chamber (11), the first stirring assembly (2) is disposed at the bottom of the feeding chamber (11), the second stirring assembly (3) is connected to the first stirring assembly (2) through the transmission part (4), the second stirring assembly (3) is disposed in the feeding chamber (11) and is eccentrically arranged relative to the central axis of the hopper (1); The external drive device is connected to the first stirring assembly (2) and drives the first stirring assembly (2) to move. When the first stirring assembly (2) moves, it drives the second stirring assembly (3) to move through the transmission part (4).

2. The fiberglass anti-bridging mixing and feeding device according to claim 1, characterized in that, The first stirring assembly (2) includes a movable rod (21) and an arc-shaped scraper (22) disposed on the movable rod (21); The shape of the arc-shaped scraper (22) fits the bottom inner wall of the feeding chamber (11), the central axis of the movable rod (21) coincides with the central axis of the feeding hopper (1), and a drive rod (23) is vertically connected to the movable rod (21). The drive rod (23) passes through the feeding hopper (1) and is connected to an external drive device.

3. The fiberglass anti-bridging mixing and feeding device according to claim 2, characterized in that, The drive rod (23) is connected to the center of the movable rod (21), and both ends of the movable rod (21) are connected to arc-shaped scrapers (22). The two arc-shaped scrapers (22) are centrally symmetrical about the center of the movable rod (21).

4. The fiberglass anti-bridging mixing and feeding device according to claim 3, characterized in that, One of the arc-shaped scrapers (22) is connected to a second stirring assembly (3) at one end away from the movable rod (21) via a transmission part (4); The transmission unit (4) includes a mounting column (41) disposed on the arc-shaped scraper (22), the mounting column (41) being offset from the rotation axis of the drive rod (23), a transmission sleeve (42) being movably sleeved on the mounting column (41), a baffle (43) being connected to the mounting column (41), and the transmission sleeve (42) being connected to the second stirring assembly (3); A support frame (33) is provided on the inner wall of the hopper (1), and the support frame (33) is used to prevent the second stirring assembly (3) from tipping over.

5. The fiberglass anti-bridging mixing and feeding device according to claim 4, characterized in that, The second stirring assembly (3) includes a stirring rod (31) fixedly connected to the transmission sleeve (42) and stirring blades (32) disposed on the stirring rod (31); the support frame (33) has a support frame (331) surrounding the stirring rod (31).

6. The fiberglass anti-bridging mixing and feeding device according to claim 5, characterized in that, The stirring blades (32) are provided in at least three sets, and the distance between any two adjacent sets of stirring blades (32) is 120 mm.

7. The fiberglass anti-bridging mixing and feeding device according to claim 6, characterized in that, The stirring blade (32) includes a plurality of stirring blades (321), which are arranged in a ring around the central axis of the movable rod (21).

8. The fiberglass anti-bridging mixing and feeding device according to claim 7, characterized in that, The stirring plate (321) is rhomboid in shape.

9. The fiberglass anti-bridging mixing and feeding device according to claim 7, characterized in that, The stirring plate (321) is wavy.

10. The fiberglass anti-bridging mixing and feeding device according to claim 8 or 9, characterized in that, The hopper (1) is a cone-shaped container that is wider at the top and narrower at the bottom, with a discharge port (12) at its bottom.

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