A thickened pipe chain conveyor flight
By installing support components on the scraper, and using springs and pulleys to provide stable support in contact with the pipe wall, the problems of scraper vibration and material drop caused by the guiding mechanism are solved, thereby improving the conveying efficiency and material integrity of the tubular chain conveyor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI RUITIAN MACHINERY MFG CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-14
AI Technical Summary
In existing tubular chain conveyors, the thick-side scraper is subject to changes in its movement trajectory due to the guiding mechanism, which causes vibration and material drop, affecting conveying efficiency and material integrity.
The system employs a support assembly, including springs, threaded rods, mounting frames, and pulleys. The concealed support reduces the contact area between the scraper and the pipe wall, while the springs and pulleys provide stable support and guidance in contact with the pipe wall.
The gap between the scraper and the pipe wall is reduced, which improves conveying efficiency and material integrity, and reduces the possibility of material falling.
Smart Images

Figure CN224492460U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tubular chain conveyor technology, and in particular to a thickened scraper for tubular chain conveyors. Background Technology
[0002] A tubular chain conveyor is a continuous conveying equipment for transporting bulk materials such as powders, small granules, and small lumps. It can transport materials horizontally, inclined, and vertically in combination. It is generally used in fine chemicals, pesticides and ores, building materials, food industries, etc. In a closed pipeline, scrapers are used as transmission components to drive the material to move along the pipeline.
[0003] Patent application CN219407992U discloses a thick-edged scraper for a tubular chain conveyor, comprising a conveying pipe, a scraper installed inside the conveying pipe, guide mechanisms at both ends of the scraper, material storage grooves on both sides of the scraper, connecting chains installed on both sides of the scraper, and a thickened plate installed on the outside of the conveying pipe. This invention improves the stability of the scraper's movement by providing guide rails at the upper and lower ends inside the conveying pipe, and corresponding guide pulleys and connecting shafts at the upper and lower ends of the scraper. When the scraper is in operation, the guide pulleys slide horizontally along the guide rails, limiting and guiding the scraper's movement. This ensures more complete and comprehensive contact between the scraper and the material, thereby improving the material conveying efficiency. Furthermore, the thickened plate on the outside of the scraper enhances its wear resistance.
[0004] However, the guide mechanism of the thick-edged scraper in this tubular chain conveyor is located between the scraper and the inner wall of the pipe. Although it can provide stable guidance, the scraper's movement trajectory may change during the operation of the tubular chain conveyor. Due to the limitations of the guide mechanism, the scraper may experience additional resistance and vibration during movement. Furthermore, the presence of the guide mechanism can cause material to fall through gaps between the scraper and the inner wall of the pipe, affecting conveying efficiency and material integrity. To address these issues, we have developed a thickened scraper for tubular chain conveyors. Utility Model Content
[0005] This utility model discloses a thickened scraper for tubular chain conveyors. It studies and improves upon the existing structure and its shortcomings, providing a thickened scraper for tubular chain conveyors to achieve better practical value.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A thickened scraper for a tubular chain conveyor includes a scraper body. The top and bottom of the scraper body have material storage grooves. An installation cylinder is fixedly connected inside the scraper body. A receiving groove is formed inside the installation cylinder. A limiting block is movably connected inside the receiving groove. Connecting blocks are fixedly connected to the top and bottom of each limiting block. An installation ring is fixedly connected to the top of each connecting block. A chain is provided on the outer side of the installation ring. Installation grooves are equidistantly formed on the outer side of the scraper body. Support components are provided inside each installation groove.
[0008] In a preferred embodiment, the support assembly includes a mounting frame that is slidably connected inside a mounting groove, and a pulley is rotatably connected inside the mounting frame.
[0009] In a preferred embodiment, a mounting block is fixedly connected to one side of the mounting frame, a threaded rod is slidably connected inside the mounting block, one end of the threaded rod is threadedly connected to the inside of the scraper body, and a first spring is provided on the outside of the threaded rod.
[0010] In a preferred embodiment, a connecting rod is fixedly connected to one side of the mounting frame, a connecting groove is provided on one side of the inner wall of the mounting groove, the outer side of the connecting rod is slidably connected to the inside of the connecting groove, and a second spring is provided on the outer side of the connecting rod.
[0011] In a preferred embodiment, a buffer spring is provided on the outer side of the connecting block.
[0012] In a preferred embodiment, the outer side of the pulley is elliptical.
[0013] The thickened scraper for tubular chain conveyors provided by this utility model has the following advantages:
[0014] Firstly, by setting up a support assembly, during the installation process, the second spring is first placed on the connecting rod, then the threaded rod is placed into the mounting block, and the first spring is placed on the threaded rod. Next, the mounting frame is placed into the mounting groove and pressed down to make the connecting rod enter the connecting groove. At the same time, the threaded rod is screwed into the scraper body using a tool. At this time, the first and second springs are compressed, pushing the mounting frame to move outward, thereby causing the pulleys to extend out of the mounting frame. Multiple sets of pulleys abut against the pipe wall to provide stable support for the scraper body.
[0015] Secondly, by setting up a support assembly, two sets of springs (first spring and second spring) work together with connecting rods, threaded rods, mounting frames, mounting grooves, connecting grooves, etc., during installation, the mounting frame is pushed outward, the pulley extends and contacts the pipe wall, providing support and guidance for the scraper body. The use of concealed support reduces the external exposed contact surface, thereby reducing the gap between the scraper body and the pipe wall and reducing material drop. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of a thickened scraper for a tubular chain conveyor according to the present invention.
[0017] Figure 2 This is a cross-sectional schematic diagram of a thickened scraper for a tubular chain conveyor according to the present invention.
[0018] Figure 3 This is a first exploded view of a thickened scraper for a tubular chain conveyor proposed in this utility model.
[0019] Figure 4 This is a second exploded view of a thickened scraper for a tubular chain conveyor proposed in this utility model.
[0020] Figure 5 This is a third exploded view of a thickened scraper for a tubular chain conveyor proposed in this utility model.
[0021] Figure 6 This utility model proposes a thickened scraper for a tubular chain conveyor. Figure 2 Enlarged diagram of point A in the middle.
[0022] In the attached diagram: 1. Scraper body; 2. Material storage groove; 3. Mounting cylinder; 4. Container trough; 5. Limiting block; 6. Connecting block; 7. Mounting ring; 8. Chain; 9. Buffer spring; 10. Mounting groove; 11. Mounting frame; 12. Pulley; 13. Connecting groove; 14. Mounting block; 15. Threaded rod; 16. First spring; 17. Connecting rod; 18. Second spring. Detailed Implementation
[0023] The technical solutions of 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. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0024] The thickened scraper for tubular chain conveyors disclosed in this utility model is mainly used in tubular chain conveyor applications.
[0025] Reference Figures 1 to 6A thickened scraper for a tubular chain conveyor includes: a scraper body 1, with material storage grooves 2 at both the top and bottom of the scraper body 1, an installation cylinder 3 fixedly connected inside the scraper body 1, a receiving groove 4 inside the installation cylinder 3, a limiting block 5 movably connected inside the receiving groove 4, a connecting block 6 fixedly connected to both the top and bottom of the limiting block 5, an installation ring 7 fixedly connected to the top of the connecting block 6, a chain 8 provided on the outside of the installation ring 7, and installation grooves 10 equidistantly provided on the outside of the scraper body 1, with a support component provided inside the installation groove 10.
[0026] The support assembly includes a mounting frame 11, which is slidably connected inside the mounting groove 10, and a pulley 12 is rotatably connected inside the mounting frame 11.
[0027] A mounting block 14 is fixedly connected to one side of the mounting frame 11. A threaded rod 15 is slidably connected inside the mounting block 14. One end of the threaded rod 15 is threadedly connected to the inside of the scraper body 1. A first spring 16 is provided on the outside of the threaded rod 15.
[0028] A connecting rod 17 is fixedly connected to one side of the mounting frame 11, and a connecting groove 13 is provided on one side of the inner wall of the mounting groove 10. The outer side of the connecting rod 17 is slidably connected to the inside of the connecting groove 13, and a second spring 18 is provided on the outer side of the connecting rod 17.
[0029] A buffer spring 9 is provided on the outer side of the connecting block 6.
[0030] In the above technical solution, considering that the guide mechanism of the thick-side scraper of the tubular chain conveyor is set between the scraper and the inner wall of the pipe, although it can provide a stable guiding effect, the movement trajectory of the scraper may change during the operation of the tubular chain conveyor. Due to the limitations of the guiding mechanism, the scraper may experience additional resistance and vibration during movement. The presence of the guiding mechanism can also cause material to fall through gaps between the scraper and the inner wall of the pipe, affecting conveying efficiency and material integrity. To address these issues, the following steps are taken: During installation, a support assembly is set up. The second spring 18 is fitted onto the connecting rod 17, and the threaded rod 15 is placed in the mounting block 14. The first spring 16 is fitted onto the threaded rod 15. The mounting frame 11 is then placed into the mounting groove 10, and the connecting rod 17 is pressed firmly into the connecting groove 13. Simultaneously, the threaded rod 15 is screwed into the scraper body 1 using a tool. At this point, both the first spring 16 and the second spring 18 are compressed, pushing the mounting frame 11 outwards and allowing the pulleys 12 to extend. Multiple sets of pulleys 12 then contact the pipe wall, providing support for the scraper body 1. By setting up a support assembly, and utilizing the coordinated action of two sets of springs, connecting rod 17, threaded rod 15, mounting frame 11, mounting groove 10, connecting groove 13, etc., the mounting frame 11 is pushed outward during installation, and the pulley 12 extends out and contacts the pipe wall, providing support and guidance for the scraper body 1. The use of concealed support reduces the externally exposed contact surface, thereby reducing the gap between the scraper body 1 and the pipe wall itself, and reducing material drop.
[0031] Reference Figures 1 to 6 In a preferred embodiment, the outer side of the pulley 12 is elliptical; the elliptical pulley 12 can better fit against the pipe wall.
[0032] Working principle: During use, during installation, the second spring 18 is fitted onto the connecting rod 17, the threaded rod 15 is placed in the mounting block 14, the first spring 16 is fitted onto the threaded rod 15, the mounting frame 11 is placed into the mounting groove 10, and the connecting rod 17 is pressed into the connecting groove 13. At the same time, the threaded rod 15 is screwed into the scraper body 1 using a tool. At this time, both the first spring 16 and the second spring 18 are compressed, thereby pushing the mounting frame 11 outward, allowing the pulley 12 to extend out. Through the contact of multiple sets of pulleys 12 with the pipe wall, the scraper body 1 is supported. All contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0033] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A thickened scraper for a tubular chain conveyor, comprising a scraper body (1), characterized in that, The scraper body (1) has a material storage groove (2) at both the top and bottom. An installation cylinder (3) is fixedly connected inside the scraper body (1). A receiving groove (4) is opened inside the installation cylinder (3). A limiting block (5) is dynamically connected inside the receiving groove (4). A connecting block (6) is fixedly connected to both the top and bottom of the limiting block (5). An installation ring (7) is fixedly connected to the top of the connecting block (6). A chain (8) is provided on the outside of the installation ring (7). An installation groove (10) is equidistantly opened on the outside of the scraper body (1). A support component is provided inside the installation groove (10).
2. The thickened scraper for a tubular chain conveyor according to claim 1, characterized in that, The support assembly includes a mounting frame (11), which is slidably connected inside the mounting groove (10), and a pulley (12) is rotatably connected inside the mounting frame (11).
3. The thickened scraper for a tubular chain conveyor according to claim 2, characterized in that, A mounting block (14) is fixedly connected to one side of the mounting frame (11). A threaded rod (15) is slidably connected inside the mounting block (14). One end of the threaded rod (15) is threadedly connected to the inside of the scraper body (1). A first spring (16) is provided on the outside of the threaded rod (15).
4. The thickened scraper for a tubular chain conveyor according to claim 3, characterized in that, A connecting rod (17) is fixedly connected to one side of the mounting frame (11), and a connecting groove (13) is provided on one side of the inner wall of the mounting groove (10). The outer side of the connecting rod (17) is slidably connected to the inside of the connecting groove (13), and a second spring (18) is provided on the outer side of the connecting rod (17).
5. A thickened scraper for a tubular chain conveyor according to claim 1, characterized in that, A buffer spring (9) is provided on the outside of the connecting block (6).
6. A thickened scraper for a tubular chain conveyor according to claim 4, characterized in that, The outer side of the pulley (12) is elliptical.