Powder feeding device for resin profile

Abstract

The utility model relates to a kind of resin section bar's powder feeding device, belong to feeding equipment technical field, including bunker, screw conveyor, discharge pipe, iron-removal square box, spigot, closed scraper, the outside of closed scraper is equipped with compression plate, two rows of magnetic rods are fixed on compression plate, each row of magnetic rods is equipped with multiple, two rows of magnetic rods are staggered in up-down direction, the right end of magnetic rod is fixed with detachable support plate, support clamping groove matched with support plate is equipped on iron-removal square box, closed scraper is equipped with the perforation for magnetic rod to pass through, the lower part of bunker is equipped with broken bridge shaft, broken bridge shaft is connected the conveying shaft of screw conveyor by transmission structure, broken bridge shaft is fixed with broken bridge pole.The utility model realizes powder deironing by the cooperation of iron-removal square box and magnetic rod, and the magnetic rod of two rows staggered expands deironing area, and improves iron impurity adsorption efficiency;Meanwhile, broken bridge pole can scatter caked powder in bunker, avoid to appear bridge phenomenon, guarantee feeding continuity.

Description

Technical Field

[0001] This utility model relates to a powder feeding device for resin profiles, belonging to the technical field of feeding equipment. Background Technology

[0002] In the production of resin profiles, powdered raw materials need to be conveyed to subsequent processing equipment via a feeding device. Currently, commonly used powder feeding devices mostly adopt a structure of hopper combined with screw conveyor. However, in actual use, the following problems exist: First, powdered raw materials are prone to bridging at the bottom of the hopper due to factors such as humidity and particle adhesion, which prevents the powder from falling smoothly and affects the continuity of feeding. Second, iron impurities may be mixed in with the raw materials. If they are not removed in time, they will affect the product quality of the resin profiles and may even damage the subsequent processing equipment. However, existing iron removal structures are mostly fixed magnets, which have limited iron removal area and are inconvenient for cleaning impurities. Utility Model Content

[0003] This invention provides a powder feeding device for resin profiles, which solves the problems existing in the background art.

[0004] This utility model relates to a powder feeding device for resin profiles, including a hopper, a screw conveyor connected to the bottom of the hopper, a discharge pipe fixed to the discharge port of the screw conveyor, a magnetic stripping box fixed to the discharge pipe, an insertion port on the side wall of the magnetic stripping box, a closed scraper inside the insertion port, a pressure plate detachably fixed to the magnetic stripping box on the outside of the closed scraper, two rows of magnetic rods fixed on the pressure plate, multiple magnetic rods in each row, the two rows of magnetic rods being staggered in the vertical direction, a detachable support plate fixed to the right end of the magnetic rods, a support groove on the magnetic stripping box that cooperates with the support plate, a through hole on the closed scraper for the magnetic rods to pass through, a bridge breaking shaft parallel to the conveying shaft of the screw conveyor at the bottom of the hopper, the bridge breaking shaft being connected to the conveying shaft of the screw conveyor through a transmission structure, and a bridge breaking rod fixed on the bridge breaking shaft.

[0005] As a preferred embodiment, a rubber sleeve is fixed inside each perforation. Both ends of the rubber sleeve are equipped with limiting flanges, and both sides of the perforation are equipped with limiting recesses that mate with the limiting flanges. The rubber sleeve fills the gap between the magnetic rod and the perforation, preventing powder leakage and ensuring the device's sealing performance. Furthermore, after the sealing scraper and pressure plate are removed, the sealing scraper can be moved, and the rubber sleeve can be used to scrape iron debris from the magnetic rod to the other end for convenient centralized cleaning. The engagement of the limiting flanges and limiting recesses positions the rubber sleeve, providing greater stability.

[0006] As a preferred embodiment, the outer edge of the closed scraper is provided with a pressing flange, and the inner side of the pressing flange is provided with a rubber gasket that fits onto the outside of the closed scraper. The outer side of the insertion port is provided with a sealing groove that mates with the rubber gasket. After the rubber gasket fits into the sealing groove, it can seal the gap between the closed scraper and the insertion port of the iron removal box, further improving the sealing performance of the iron removal box, preventing powder from leaking from the insertion port, and keeping the working environment clean.

[0007] As a preferred option, a pull handle is fixed to the middle of the outer side of the clamping plate to facilitate pulling out the clamping plate.

[0008] As a preferred embodiment, bearing sleeves are rotatably installed at both ends of the bridge breaking shaft. The bearing sleeves are fixedly connected to a fixing frame. The fixing frame is detachably fixed to the outer wall of the hopper by bolts. The hopper is provided with mounting holes, and a sealing sleeve is fixed in the mounting holes. A sealing ring is provided between the sealing sleeve and the bridge breaking shaft to ensure the sealing effect.

[0009] As a preferred embodiment, multiple mounting sleeves are fitted on the outer wall of the bridge breaking shaft. Each mounting sleeve consists of two semi-circular sleeves. The two ends of the semi-circular sleeves are provided with connecting flanges, and locking bolts are provided on the connecting flanges. The bridge breaking rod is fixed on the outer wall of the semi-circular sleeves. The mounting sleeve adopts a two-semi-circular sleeve split structure, so the mounting sleeve can be installed and removed without disassembling the bridge breaking shaft.

[0010] As a preferred embodiment, the transmission structure includes a drive sprocket fixed to the conveying shaft of the screw conveyor, the drive sprocket being connected to a driven sprocket via a chain, and the driven sprocket being fixedly connected to the lower end of the bridge-breaking shaft.

[0011] As a preferred embodiment, a fixing ring plate is fixed to the lower outer wall of the silo. Multiple support plates are evenly fixed to the bottom of the fixing ring plate, and each support plate has a support leg fixed to its bottom. A reinforcing rib is fixed to the top of each support plate. A welding slot is provided on the outer wall of the fixing ring plate, and the inner end of the reinforcing rib is welded and fixed into the welding slot. The fixing ring plate enhances the structural strength of the lower part of the silo, the support plates and support legs cooperate to provide stable support for the device, and the welding slot between the reinforcing rib and the fixing ring plate further improves the connection strength between the support plates and the fixing ring plate, ensuring the structural stability of the device during long-term use.

[0012] This utility model has the following beneficial effects: Iron removal from powder is achieved through the combination of an iron removal box and magnetic rods. Two rows of staggered magnetic rods expand the iron removal area and improve the adsorption efficiency of iron impurities. The bridge-breaking shaft is linked with the conveyor shaft of the screw conveyor, eliminating the need for additional drive components and reducing energy consumption. At the same time, the bridge-breaking rod can break up clumps of powder in the hopper, preventing bridging and ensuring continuous feeding. The magnetic rod support plate and support slot are matched, and the clamping plate is detachable, making it easy to remove the magnetic rods for cleaning impurities and facilitating maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Partial structural diagram Figure 1 ; Figure 3 for Figure 1 Partial structural diagram Figure 2 ; Figure 4 for Figure 1 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the vertical distribution structure of the magnetic rod; In the diagram: 1. Hopper; 2. Fixed ring plate; 3. Reinforcing rib plate; 4. Support leg; 5. Bridge breaking shaft; 6. Chain; 7. Conveyor shaft; 8. Screw conveyor; 9. Support plate; 10. Magnetic rod; 11. Iron removal box; 12. Pressure plate; 13. Enclosed scraper; 14. Mounting sleeve; 15. Fixing frame; 16. Sealing sleeve; 17. Bridge breaking rod; 18. Rubber gasket; 19. Rubber sleeve; 20. Pull handle; 21. Driven sprocket. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] Example 1, as Figures 1 to 5 As shown, this utility model is a powder feeding device for resin profiles, including a hopper 1. A screw conveyor 8 is connected to the bottom of the hopper 1. A discharge pipe is fixed to the discharge port of the screw conveyor 8. A magnetic stripping box 11 is fixed to the discharge pipe. An insertion port is provided on the side wall of the magnetic stripping box 11. A sealing scraper 13 is provided inside the insertion port. A pressure plate 12, detachably fixed to the magnetic stripping box 11, is provided on the outside of the sealing scraper 13. Two rows of magnetic rods 10 are fixed on the pressure plate 12. Multiple magnetic rods 10 are provided, and two rows of magnetic rods 10 are staggered in the vertical direction. A detachable support plate 9 is fixed to the right end of the magnetic rod 10. The iron removal box 11 is provided with a support slot that cooperates with the support plate 9. The closed scraper 13 is provided with a through hole for the magnetic rods 10 to pass through. The lower part of the hopper 1 is provided with a bridge breaking shaft 5 parallel to the conveying shaft 7 of the screw conveyor 8. The bridge breaking shaft 5 is connected to the conveying shaft 7 of the screw conveyor 8 through a transmission structure. A bridge breaking rod 17 is fixed on the bridge breaking shaft 5.

[0016] During operation, the screw conveyor 8 is started, and the conveying shaft 7 of the screw conveyor 8 rotates, driving the internal spiral blades to transport powder. At the same time, the conveying shaft 7 drives the bridge breaking shaft 5 to rotate synchronously through the transmission structure. The outer bridge breaking rod 17 rotates with it, breaking up the powder that is prone to caking at the bottom of the hopper 1, preventing powder bridging, and ensuring that the powder falls smoothly into the screw conveyor 8. The powder is conveyed by the screw conveyor 8 to the discharge pipe and enters the iron removal box 11. During the process of passing through the iron removal box 11, the iron impurities in the powder are adsorbed by two rows of staggered magnetic rods 10, realizing iron removal. The iron-removed powder is then conveyed to the subsequent processing equipment through the discharge pipe. Impurity cleaning: When there are a lot of iron impurities adsorbed on the magnetic rod 10, turn off the screw conveyor 8, unscrew the fixing bolts of the clamping plate 12, pull out the clamping plate 12 and the magnetic rod 10, and then move the closed scraper 13 to one side of the support plate 9 to scrape the iron impurities adsorbed on the surface of the magnetic rod 10 to one end, and then they can be cleaned in a concentrated manner; after cleaning, reset the closed scraper 13, reinstall the clamping plate 12, and it can be used again.

[0017] In Example 2, based on Example 1, a rubber sleeve 19 is fixed inside each perforation. Both ends of the rubber sleeve 19 are provided with limiting flanges, and both sides of the perforation are provided with limiting recesses that mate with the limiting flanges. Except for the iron square box 11, the pressure plate 12, the sealing scraper 13, and the support plate 9, all are made of stainless steel. The inner hole of the rubber sleeve 19 and the outer wall of the magnetic rod 10 are interference-fitted.

[0018] The outer edge of the sealing scraper 13 is provided with a pressing flange, and the inner side of the pressing flange is provided with a rubber gasket 18 that fits onto the outer side of the sealing scraper 13. The outer side of the insertion port is provided with a sealing groove that mates with the rubber gasket 18. After the sealing scraper 13 is pressed by the pressing plate 12, the inner end of the sealing scraper 13 is flush with the inner end of the insertion port.

[0019] A pull handle 20 is fixed to the middle of the outer side of the clamping plate 12.

[0020] Bearing sleeves are rotatably installed at both ends of the bridge breaking shaft 5. The bearing sleeves are fixedly connected to the fixing frame 15. The fixing frame 15 is detachably fixed to the outer wall of the hopper 1 by bolts. The hopper 1 is provided with mounting holes. A sealing sleeve 16 is fixed in the mounting holes. A sealing ring is provided between the sealing sleeve 16 and the bridge breaking shaft 5.

[0021] Multiple mounting sleeves 14 are fitted onto the outer wall of the bridge-breaking shaft 5. Each mounting sleeve 14 consists of two semi-circular sleeves, with connecting flanges at both ends. Locking bolts are installed on the connecting flanges. The bridge-breaking rod 17 is fixed to the outer wall of the semi-circular sleeves. When installing the bridge-breaking rod 17, simply fit the two semi-circular sleeves onto the outer wall of the bridge-breaking shaft 5, and then use the locking bolts to fix the connecting flanges.

[0022] The transmission structure includes a drive sprocket fixed to the conveying shaft 7 of the screw conveyor 8. The drive sprocket is connected to a driven sprocket 21 via a chain 6. The driven sprocket 21 is fixedly connected to the lower end of the bridging shaft 5. When the conveying shaft 7 of the screw conveyor 8 rotates, it drives the internal spiral blades to convey powder. At the same time, the drive sprocket on the conveying shaft 7 drives the driven sprocket 21 to rotate via the chain 6, which in turn drives the bridging shaft 5 to rotate synchronously. The bridging rod 17 agitates the powder and prevents bridging.

[0023] A fixing ring plate 2 is fixed on the lower outer wall of the hopper 1. Multiple support plates 9 are evenly fixed on the bottom of the fixing ring plate 2. Each support plate 9 has a support leg 4 fixed on its bottom. A reinforcing rib plate 3 is fixed on the top of the support plate 9. A welding slot is provided on the outer wall of the fixing ring plate 2. The inner end of the reinforcing rib plate 3 is welded and fixed in the welding slot.

[0024] 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.

[0025] 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 powder feeding device for resin profiles, comprising a hopper (1), a screw conveyor (8) connected to the bottom of the hopper (1), and a discharge pipe fixed to the discharge port of the screw conveyor (8), characterized in that: A metal removal box (11) is fixed on the discharge pipe. The side wall of the metal removal box (11) is provided with an insertion port. A closed scraper (13) is provided inside the insertion port. A pressure plate (12) that can be detachably fixed on the metal removal box (11) is provided on the outside of the closed scraper (13). Two rows of magnetic rods (10) are fixed on the pressure plate (12). There are multiple magnetic rods (10) in each row. The two rows of magnetic rods (10) are staggered in the vertical direction. A detachable support plate (9) is fixed on the right end of the magnetic rod (10). A support slot that cooperates with the support plate (9) is provided on the metal removal box (11). A through hole for the magnetic rod (10) to pass through is provided on the closed scraper (13). A bridge breaking shaft (5) parallel to the conveying shaft (7) of the screw conveyor (8) is provided at the lower part of the hopper (1). The bridge breaking shaft (5) is connected to the conveying shaft (7) of the screw conveyor (8) through a transmission structure. A bridge breaking rod (17) is fixed on the bridge breaking shaft (5).

2. The powder feeding device for resin profiles according to claim 1, characterized in that: Each perforation is fixed with a rubber sleeve (19), and both ends of the rubber sleeve (19) are provided with limiting flanges. Both sides of the perforation are provided with limiting recesses that cooperate with the limiting flanges.

3. The powder feeding device for resin profiles according to claim 1, characterized in that: The outer edge of the closed scraper (13) is provided with a pressing flange, and the inner side of the pressing flange is provided with a rubber gasket (18) that fits on the outside of the closed scraper (13). The outer side of the insertion port is provided with a sealing groove that matches the rubber gasket (18).

4. The powder feeding device for resin profiles according to claim 1, characterized in that: A pull handle (20) is fixed to the middle of the outer side of the clamping plate (12).

5. The powder feeding device for resin profiles according to claim 1, characterized in that: The two ends of the bridge breaking shaft (5) are rotatably installed with bearing sleeves, and the bearing sleeves are fixedly connected with a fixing frame (15). The fixing frame (15) is detachably fixed to the outer wall of the silo (1) by bolts. The silo (1) is provided with mounting holes, and a sealing sleeve (16) is fixed in the mounting holes. A sealing ring is provided between the sealing sleeve (16) and the bridge breaking shaft (5).

6. The powder feeding device for resin profiles according to claim 5, characterized in that: Multiple mounting sleeves (14) are fitted on the outer side wall of the bridge breaking shaft (5). Each mounting sleeve (14) consists of two semi-circular sleeves. The two ends of the semi-circular sleeves are provided with connecting flanges, and locking bolts are provided on the connecting flanges. The bridge breaking rod (17) is fixed on the outer side wall of the semi-circular sleeve.

7. The powder feeding device for resin profiles according to claim 1, characterized in that: The transmission structure includes a drive sprocket fixed to the conveying shaft (7) of the screw conveyor (8), and the drive sprocket is connected to a driven sprocket (21) via a chain (6). The driven sprocket (21) is fixedly connected to the lower end of the bridge breaking shaft (5).

8. The powder feeding device for resin profiles according to claim 1, characterized in that: A fixing ring plate (2) is fixed on the lower outer wall of the hopper (1). Multiple support plates (9) are evenly fixed on the bottom of the fixing ring plate (2). Each support plate (9) has a support leg (4) fixed on its bottom. A reinforcing rib plate (3) is fixed on the top of the support plate (9). A welding slot is provided on the outer wall of the fixing ring plate (2). The inner end of the reinforcing rib plate (3) is welded and fixed in the welding slot.

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