A break-bridge type buffer bin
Patent Information
- Application Number
- CN202522345345.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-05
AI Technical Summary
Recycled plastic pellets can easily form bridging structures in the buffer silo, causing blockage at the discharge port and affecting the continuous operation and processing efficiency of the production line.
A bridge-type buffer hopper is designed, which uses a disturbance shaft and linkage to drive the deflection plate to swing back and forth, breaking the interlocking state between particles, and optimizes the discharge hood through a V-shaped surrounding chamber and a thin shell structure to avoid clogging.
It effectively breaks down bridging structures, prevents secondary blockages, improves the continuous operation efficiency of the production line, and reduces manual maintenance costs and downtime losses.
Smart Images
Figure CN224929590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of recycled plastics processing, and in particular to a broken-bridge type buffer silo. Background Technology
[0002] In the field of recycled plastics processing, buffer silos are key transfer equipment that connects core processes such as material crushing, washing, drying and granulation. Their core function is to temporarily store pre-treated recycled plastic granules (or fragments) and to achieve a stable and continuous material supply according to the feeding needs of downstream equipment such as granulators and extruders, thereby ensuring the synchronization of the entire production line and the processing efficiency.
[0003] Recycled plastic raw materials come from complex sources (such as waste plastic bottles, waste films, and waste appliance casings). After crushing and sorting, the material particles are irregular in shape (mostly irregular fragments or particles of unequal size), have large density fluctuations, and are prone to retaining trace amounts of moisture, oil, or additive residues from the cleaning process. This results in a significantly higher adhesion between the materials compared to virgin plastics. When such materials accumulate in a buffer silo, the particles easily interlock through friction and adhesion. Especially in the discharge cone section at the bottom of the silo, the material is easily compressed by gravity to form a stable arch-shaped blockage structure, i.e., a bridging structure, which directly blocks the discharge channel.
[0004] Therefore, a bridge-type buffer silo is needed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a bridge-breaking buffer silo to efficiently break up the bridge structure and avoid secondary blockage.
[0006] To solve the above-mentioned technical problems, this utility model provides a bridge-type buffer hopper, including a hopper body, a discharge hood, a disturbance component, and a linkage component; A discharge port is provided at the bottom of the silo body; The discharge hood is installed on the discharge port, and its outer wall is provided with multiple deflection plates that can be deflected to open or close. The disturbance component includes a disturbance shaft; The disturbance shaft is rotatably installed inside the hopper, with one end extending into the discharge hood, and is connected to the deflection plate via the linkage. When the disturbance shaft rotates, the deflection plate can reciprocate under the action of the linkage.
[0007] Furthermore, a V-shaped surrounding chamber is formed between the discharge hood and the inner wall of the hopper.
[0008] Furthermore, the top of the discharge hood is configured as a thin shell structure, and the outer diameter of the discharge hood increases from top to bottom.
[0009] Furthermore, the outer wall of the deflection plate is flush with the outer wall of the discharge hood and has an arc-shaped structure.
[0010] Furthermore, the linkage includes a slip ring and a hinge rod; The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood is provided with a reciprocating thread; The slip ring is threadedly connected to the disturbance shaft; One end of the hinge rod is hinged to the outer wall of the slip ring, and the other end is hinged to the deflection plate.
[0011] Furthermore, the number of the hinge rods corresponds one-to-one with the number of the deflection plates.
[0012] Furthermore, the linkage includes a slip ring and a connecting rod; The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood is provided with a reciprocating thread; The slip ring is threadedly connected to the disturbance shaft; One end of the connecting rod is fixedly connected to the outer wall of the slip ring, and the other end is movably connected to the deflection plate.
[0013] Furthermore, a groove is provided at one end of the deflection plate that is connected to the connecting rod, and a limiting groove is provided in the groove along its length direction. The connecting rod is provided with a limiting post that matches the limiting groove.
[0014] Furthermore, the number of connecting rods corresponds one-to-one with the number of deflection plates.
[0015] Furthermore, the inner wall of the chamber is provided with an anti-adhesion layer, which is made of silicone.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects: The deflector plate is driven to oscillate back and forth by the cooperation of the disturbance shaft and the linkage components. This allows the deflector plate to directly act on the material around the discharge hood that is prone to bridging due to the irregularity and high adhesion of recycled plastic particles. This breaks the interlocking state between particles, eliminating the need for traditional vibration schemes or agitator structures, effectively reducing the risk of equipment failure. At the same time, the components work together to form an automatic bridging breaking system, which can continuously prevent the formation of new bridging without manual disassembly and cleaning. This avoids the shutdown of downstream granulators and extruders due to blockages, significantly improving the continuous operating efficiency of the recycled plastic processing production line and reducing manual maintenance costs and production capacity losses caused by downtime. Attached Figure Description
[0017] Figure 1This is a cross-sectional view of the deflection plate in the deflection-closed state in the bridge-type buffer hopper of the present invention, according to Embodiment 1. Figure 2 This is a cross-sectional view of the deflection plate in the deflection opening and closing state of the bridge-type buffer silo in Embodiment 1 of this utility model. Figure 3 This is a partial structural diagram of the discharge hood in the bridge-type buffer hopper of this utility model in Embodiment 1; Figure 4 This is a partial structural diagram of the discharge hood in the bridge-type buffer hopper of the present invention in another state, according to Embodiment 1 of the present invention. Figure 5 This is a cross-sectional view of the deflection plate in the deflection-closed state in the bridge-type buffer hopper of Embodiment 2 of this utility model.
[0018] Reference numerals: 1. Bin body; 11. Discharge port; 2. Discharge cover; 21. Deflection plate; 211. Groove; 3. Disturbance component; 4. Linkage component; 41. Slip ring; 42. Hinge rod; 43. Connecting rod; 5. Anti-adhesion layer. Detailed Implementation
[0019] The following is a more detailed description of the bridge-type buffer hopper of this utility model with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model.
[0020] Furthermore, based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this patent.
[0021] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0022] Example 1 like Figures 1 to 4 As shown in the figure, this utility model embodiment proposes a bridge-type buffer hopper, including a hopper body 1, a discharge hood 2, a disturbance component 3, and a linkage component 4.
[0023] The bottom of the hopper 1 is provided with a discharge port 11.
[0024] The discharge hood 2 is installed on the discharge port 11, and its outer wall is provided with a plurality of deflection plates 21 that can be deflected to open or close. That is, the deflection plates 21 open and close by deflection, which can connect the discharge port 11 with the inside of the hopper 1, so that the plastic particles can be discharged to the next process, realizing the transfer of materials.
[0025] The disturbance component 3 includes a disturbance shaft.
[0026] The disturbance shaft is rotatably installed inside the hopper 1, with one end extending into the discharge hood 2, and is connected to the deflection plate 21 via the linkage 4.
[0027] It should be noted that when the disturbance shaft rotates, the deflection plate 21 can reciprocate under the action of the linkage 4.
[0028] This device, through the disturbance of the disturbance shaft and the cooperation of the linkage 4, enables the deflection plate 21 to swing back and forth, thereby breaking the interlocking state between plastic particles. When the deflection plate 21 is in the deflection opening and closing state, the discharge port 11 can be connected to the inner cavity of the chamber 1, so that the plastic particles can be continuously discharged. This can avoid the shutdown of downstream granulators and extruders due to blockage, significantly improve the continuous operation efficiency of the recycled plastic processing production line, and reduce manual maintenance costs and production capacity loss caused by downtime.
[0029] In this embodiment, the discharge hood 2 and the inner wall of the hopper 1 form a V-shaped surrounding chamber, which causes the plastic particles to gather around the deflector plate 21 under the action of gravity. As a result, when the deflector plate 21 swings, it can accelerate the discharge of plastic particles and prevent the plastic particles from accumulating at the bottom and being unable to be discharged.
[0030] Preferably, the top of the discharge hood 2 is configured as a thin shell structure, and the outer diameter of the discharge hood 2 increases from top to bottom.
[0031] By making the top of the discharge hood 2 a thin shell structure, its surface forms a smooth arc transition surface without sharp edges or concave areas. This can effectively prevent recycled plastic particles (especially irregularly shaped fragments or particles of different diameters) from getting stuck or accumulating at the top of the discharge hood 2. The smooth thin shell can also guide the material to slide naturally along the arc surface to the surrounding chamber between the hopper 1 and the discharge hood 2 and the discharge port 11 area, reducing the amount of material residue at the top.
[0032] Meanwhile, the arc design of the thin shell structure can further disperse the impact stress when the material falls, avoid the deformation of the top of the discharge hood 2 caused by local stress concentration. Combined with the structure with the outer diameter increasing from top to bottom, it can guide the material to flow in a direction to the discharge port 11 through the gradual change in outer diameter, and improve the overall impact resistance and deformation resistance of the discharge hood 2 through structural optimization, thereby further extending the service life of the device.
[0033] In addition, it can reduce the material residue at the top of the discharge hood 2 and prevent the residual material from clumping due to prolonged standing, thereby reducing the risk of bridging formed by the clumped material and the subsequent falling material. It also helps the deflection plate 21 to achieve a more efficient bridging and discharge effect, ensuring that the recycled plastic particles are continuously and stably discharged, and avoiding secondary blockage caused by the accumulation of residue at the top.
[0034] In this embodiment, the outer wall of the deflection plate 21 is flush with the outer wall of the discharge hood 2 and has an arc-shaped structure.
[0035] In other embodiments, a specific linkage 4 is proposed to better enable the deflection plate 21 to swing when the disturbance shaft rotates.
[0036] Specifically, the linkage 4 includes a slip ring 41 and a hinge rod 42.
[0037] The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood 2 is provided with a reciprocating thread.
[0038] The slip ring 41 is threadedly connected to the disturbance shaft.
[0039] One end of the hinge rod 42 is hinged to the outer wall of the slip ring 41, and the other end is hinged to the deflection plate 21.
[0040] By setting up a linkage 4 including a slip ring 41 and a hinge rod 42, when the disturbance shaft rotates, the slip ring 41 will reciprocate along the length direction of the disturbance shaft under the limiting action of the reciprocating thread and the hinge rod 42, thereby pulling the hinge rod 42 to deflect, so as to complete the swing control of the deflection plate 21, realize the function of intermittently squeezing the plastic particles, breaking the interlocking state between the plastic particles, and preventing blockage.
[0041] It should be noted that the number of the hinge rods 42 corresponds one-to-one with the number of the deflection plates 21.
[0042] In addition, the inner wall of the chamber 1 is provided with an anti-adhesion layer 5, which is made of silicone. The anti-adhesion layer 5 can effectively prevent plastic particles from adhering to the inner wall of the chamber 1 due to static electricity, thereby achieving the purpose of self-cleaning and preventing material residue.
[0043] Example 2 like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that another linkage 4 is proposed, which makes the reciprocating swing of the deflection plate 21 more stable.
[0044] Specifically, the linkage 4 includes a slip ring 41 and a connecting rod 43.
[0045] The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood 2 is provided with a reciprocating thread.
[0046] The slip ring 41 is threadedly connected to the disturbance shaft.
[0047] One end of the connecting rod 43 is fixedly connected to the outer wall of the slip ring 41, and the other end is movably connected to the deflection plate 21.
[0048] That is, by moving the slip ring 41 back and forth along the length of the disturbance axis, the connecting rod 43 is driven to slide synchronously, so that the deflection plate 21 is opened on the outside or closed on the inside, thereby completing the control of the reciprocating swing of the deflection plate 21.
[0049] In this embodiment, in order to ensure the stability of the operation of the linkage 4, the connection between the deflection plate 21 and the connecting rod 43 is further defined.
[0050] Specifically, the deflecting plate 21 has a groove 211 at one end connected to the connecting rod 43, and a limiting groove is provided in the groove 211 along its length. The connecting rod 43 is provided with a limiting post that matches the limiting groove. Through the cooperation of the limiting groove and the limiting post, the connecting rod 43 and the deflecting plate 21 are always connected together and will not detach. This allows the deflecting plate 21 to stably open outward or close inward, periodically disrupting the interlocking state between the plastic particles and accelerating the discharge of the plastic particles.
[0051] The number of connecting rods 43 corresponds one-to-one with the number of deflection plates 21.
[0052] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A bridge-type buffer silo, characterized in that, This includes the hopper body, discharge hood, disturbance components, and linkage parts; A discharge port is provided at the bottom of the silo body; The discharge hood is installed on the discharge port, and its outer wall is provided with multiple deflection plates that can be deflected to open or close. The disturbance component includes a disturbance shaft; The disturbance shaft is rotatably installed inside the hopper, with one end extending into the discharge hood, and is connected to the deflection plate via the linkage. When the disturbance shaft rotates, the deflection plate can reciprocate under the action of the linkage.
2. The bridge-type buffer silo as described in claim 1, characterized in that, The discharge hood and the inner wall of the hopper body form a V-shaped surrounding chamber.
3. The bridge-type buffer silo as described in claim 1, characterized in that, The top of the discharge hood is a thin-shell structure, and the outer diameter of the discharge hood increases from top to bottom.
4. The bridge-type buffer silo as described in claim 1, characterized in that, The outer wall of the deflection plate is flush with the outer wall of the discharge hood and has an arc-shaped structure.
5. The bridge-type buffer silo as described in claim 1, characterized in that, The linkage includes a slip ring and a hinge rod; The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood is provided with a reciprocating thread; The slip ring is threadedly connected to the disturbance shaft; One end of the hinge rod is hinged to the outer wall of the slip ring, and the other end is hinged to the deflection plate.
6. The bridge-type buffer silo as described in claim 5, characterized in that, The number of hinge rods corresponds one-to-one with the number of deflection plates.
7. The bridge-type buffer silo as described in claim 1, characterized in that, The linkage component includes a slip ring and a connecting rod; The outer wall of one end of the disturbance shaft that extends into the inside of the discharge hood is provided with a reciprocating thread; The slip ring is threadedly connected to the disturbance shaft; One end of the connecting rod is fixedly connected to the outer wall of the slip ring, and the other end is movably connected to the deflection plate.
8. The bridge-type buffer silo as described in claim 7, characterized in that, The deflection plate is provided with a groove at one end where it is connected to the connecting rod, and a limiting groove is provided in the groove along its length. The connecting rod is provided with a limiting post that matches the limiting groove.
9. The bridge-type buffer silo as described in claim 7, characterized in that, The number of connecting rods corresponds one-to-one with the number of deflection plates.
10. The bridge-type buffer silo as described in claim 1, characterized in that, The inner wall of the chamber is provided with an anti-adhesion layer, which is made of silicone.