Dustproof telescopic pipe
By introducing a cleaning device into the dustproof telescopic chute, and utilizing the rotation of the limiting ring and the guide plate, the problem of sticky material adhesion is solved, achieving the cleaning of the inner wall of the dustproof hopper and the diversion of materials, thus improving the practicality and anti-clogging effect of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI BANGYAO MASCH ENG CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-31
AI Technical Summary
When conveying viscous materials with high moisture content, the existing telescopic chute tends to cause the materials to stick to the inner wall of the dust hopper, making cleaning difficult, increasing the workload of workers, and potentially causing port blockage.
A dustproof telescopic chute was designed, employing a cleaning device including a limiting ring, a helical gear, a guide plate, and a motor-driven active gear system. The limiting ring drives the scraper and guide plate to rotate, thereby cleaning the inner wall of the dustproof hopper and diverting the material to prevent blockage.
It effectively prevents materials from sticking together, reduces cleaning workload, ensures smooth conveying, and improves the practicality and anti-clogging performance of the device.
Smart Images

Figure CN224577281U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescopic chutes, and more specifically, to a dustproof telescopic chute. Background Technology
[0002] Telescopic chutes, also known as telescopic unloading pipes, bag chutes, or spiral hoses, are flexible connection devices used for conveying and unloading bulk materials. They are widely used in ports, docks, grain silos, chemical plants, feed mills, thermal power plants, and other applications where granular or powdery materials need to be transferred from one location to another.
[0003] In existing technologies, the bottom of telescopic chutes is usually equipped with a dustproof hopper to ensure that a large amount of dust does not enter the bottom when unloading or guiding material at the port. However, when the surface of some materials has a certain degree of moisture and stickiness, they will stick to the inner wall of the hopper, thus affecting the cleanliness of the inner wall of the dustproof cover. Subsequent cleaning will also increase the workload of the staff and reduce the practicality of the existing dustproof hopper of the device. Utility Model Content
[0004] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a dustproof telescopic chute that can quickly scrape off the dustproof inner wall at the bottom of the chute, thereby preventing the material inside from sticking together and reducing the workload of subsequent workers. Secondly, while scraping, the outlet can also be periodically rotated and diverted to ensure that the port does not become blocked, ensuring the normal material guiding process and further improving the practicality of the device.
[0005] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.
[0006] A dustproof telescopic chute includes a telescopic material pipe body, and also includes, A connecting ring is fixedly installed at the bottom end of the telescopic material pipe body. A dust hopper is also fixedly connected to the bottom end of the connecting ring. A cleaning device is rotatably installed inside the dust hopper. The cleaning device includes a limiting ring. A rotating groove is opened on the surface of the limiting ring. A helical gear is rotatably installed inside the rotating groove. A connecting shaft is fixedly connected to one side of the helical gear. A guide plate is fixedly connected to the other side of the connecting shaft.
[0007] Furthermore, a motor is fixedly connected to the bottom end of the telescopic material tube, and a drive gear is fixedly sleeved on the output shaft of the motor.
[0008] Furthermore, the number of the guide plates is four, and the four guide plates are distributed equidistantly on the inner wall of the dust hopper through the polar axis of the dust hopper's center.
[0009] Furthermore, the surface of the dust hopper is provided with a transmission groove, and a toothed ring is fixedly connected to the outer side of the limiting ring. The outer side of the toothed ring meshes with the drive gear through the transmission groove.
[0010] Furthermore, four scrapers are fixedly connected to the bottom of the limiting ring. The outer edge of the scraper is set with a rounded corner structure, and its inner side is attached to the inner wall of the dust hopper.
[0011] Furthermore, the surface of the connecting ring is provided with several fixing holes, and a helical gear ring is fixedly connected to the inner side of the connecting ring, with the inner wall of the helical gear ring meshing with the helical gear.
[0012] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: (1) This solution utilizes a cleaning device to continuously rotate and scrape the inner wall of the dust hopper, thereby ensuring that the inner wall of the dust hopper will not stick to the material. This ensures that the telescopic material pipe can transport sticky materials without increasing the cleaning workload of subsequent workers, thus improving the practicality of the device.
[0013] (2) This solution utilizes the cleaning device to drive the guide plate to revolve around the center, and can also cooperate with the helical tooth ring to drive the guide plate to rotate on its own axis, so that the material in this area will not accumulate and cause difficulty in unloading. Therefore, the device has the effect of cleaning and anti-blocking material guiding at the same time, which further improves the practicality of the device. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a half-section internal structure diagram of the dust hopper in this utility model; Figure 3 This is a schematic diagram of the cleaning device structure in this utility model; Figure 4 This is a partial cross-sectional structural diagram of the connecting ring in this utility model.
[0015] Explanation of the labels in the diagram: 1. Telescopic material tube body; 2. Connecting ring; 3. Motor; 4. Drive gear; 5. Dust hopper; 6. Cleaning device; 7. Coupling shaft; 8. Guide plate; 9. Helical gear; 201. Fixing hole; 202. Helical gear ring; 501. Transmission groove; 601. Limiting ring; 602. Gear ring; 603. Scraper; 604. Rotating groove. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0017] In the description of this utility model, 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 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 be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly 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 utility model based on the specific circumstances.
[0019] Example: Please see Figure 1-4 A dustproof telescopic chute includes a telescopic material pipe body 1, and also includes... A connecting ring 2 is fixedly installed at the bottom end of the telescopic material pipe body 1. A dust hopper 5 is also fixedly connected to the bottom end of the connecting ring 2. A cleaning device 6 is rotatably installed inside the dust hopper 5. The cleaning device 6 includes a limiting ring 601. A rotating groove 604 is opened on the surface of the limiting ring 601. A helical gear 9 is rotatably installed inside the rotating groove 604. A connecting shaft 7 is fixedly connected to one side of the helical gear 9. A guide plate 8 is fixedly connected to the other side of the connecting shaft 7. It should be noted that the telescopic tube body 1 in this application is a component of existing mature technology. It is made of a foldable and telescopic material in the middle, and the upper and lower ends are fixed steel rings with corresponding threaded grooves to be fixedly connected to the corresponding parts by bolts. These are all conventional applications of existing mature technology, so they will not be described in detail in this application. A motor 3 is fixedly connected to the bottom end of the telescopic material tube body 1. A drive gear 4 is fixedly sleeved on the output shaft of the motor 3. A transmission groove 501 is opened on the surface of the dust hopper 5. A toothed ring 602 is fixedly connected to the outer side of the limiting ring 601. The outer side of the toothed ring 602 meshes with the drive gear 4 through the transmission groove 501. Four scrapers 603 are fixedly connected to the bottom of the limiting ring 601. The outer edge of the scraper 603 is set with a rounded corner structure, and its inner side is attached to the inner wall of the dust hopper 5. Specifically, the transmission groove 501 allows the drive gear 4 and the gear ring 602 to have a space for transmission connection. Secondly, the limiting ring 601 can rotate on the inner wall of the dust hopper 5. The scraper 603 continuously scrapes and cleans the inner side of the dust hopper 5 to prevent material from sticking. The rotation groove 604 can also limit the rotation of the entire connecting shaft 7 to prevent it from shifting and to provide a supporting effect. The number of the guide plates 8 is four. The four guide plates 8 are distributed at equal intervals on the inner wall of the dust hopper 5 through the polar axis of the center of the dust hopper 5. The surface of the connecting ring 2 is provided with a number of fixing holes 201. The inner side of the connecting ring 2 is also fixedly connected with a helical tooth ring 202. The inner wall of the helical tooth ring 202 and the helical gear 9 mesh with each other. Specifically, by fixing the position of the connecting ring 2, the helical gear ring 202 is fixed as a whole. Then, the helical gear 9 continuously rotates with the overall rotation of the limiting ring 601 to generate a corresponding rotational transmission effect. This achieves the effect of the guide plate 8 rotating on its own axis while revolving around the revolution, thus enabling it to continuously flip and thus stirring and diverting the material discharged at the port, preventing it from accumulating and affecting the discharge efficiency. The working principle of this utility model is as follows: The upper end of the telescopic material tube 1 is fixedly connected to the discharge port by steel rings and bolts. Then, the material is guided from the inside of the telescopic material tube 1. During the process, the motor 3 can be started to drive the drive gear 4 to rotate, so that the gear ring 602 continuously drives the limit ring 601 to rotate, thereby causing the scraper 603 to continuously and quickly scrape and clean the inside of the dust hopper 5. When the limit ring 601 rotates, it drives the helical gear 9 to move through the rotating groove 604, so that it works with the helical gear ring 202 to rotate continuously. The two work together to make the guide plate 8 continuously revolve and rotate, further diverting the discharged material and preventing material accumulation.
[0020] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A dustproof telescopic chute, comprising a telescopic material pipe body (1), characterized in that: It also includes, A connecting ring (2) is fixedly installed at the bottom end of the telescopic material pipe body (1). A dust hopper (5) is also fixedly connected to the bottom end of the connecting ring (2). A cleaning device (6) is rotatably installed inside the dust hopper (5). The cleaning device (6) includes a limiting ring (601). A rotating groove (604) is opened on the surface of the limiting ring (601). A helical gear (9) is rotatably installed inside the rotating groove (604). A connecting shaft (7) is fixedly connected to one side of the helical gear (9). A guide plate (8) is fixedly connected to the other side of the connecting shaft (7).
2. A dust-proof retractable chuting pipe according to claim 1, characterized in that: The bottom end of the telescopic material tube (1) is fixedly connected to a motor (3), and the output shaft of the motor (3) is fixedly sleeved with a drive gear (4).
3. A dust-proof retractable chuting pipe according to claim 1, characterized in that: The number of the guide plates (8) is four, and the four guide plates (8) are distributed equidistantly on the inner wall of the dust hopper (5) through the polar axis of the center.
4. A dust-proof retractable chuting pipe according to claim 1, characterized in that: The surface of the dust hopper (5) is provided with a transmission groove (501), and a toothed ring (602) is fixedly connected to the outer side of the limiting ring (601). The outer side of the toothed ring (602) meshes with the drive gear (4) through the transmission groove (501).
5. A dust-proof retractable chuting pipe according to claim 1, characterized in that: The bottom of the limiting ring (601) is fixedly connected to four scrapers (603). The outer edge of the scraper (603) is set as a rounded corner structure, and its inner side is attached to the inner wall of the dust hopper (5).
6. A dust-proof retractable chuting pipe according to claim 1, characterized in that: The surface of the connecting ring (2) is provided with a number of fixing holes (201), and a helical tooth ring (202) is fixedly connected to the inner side of the connecting ring (2). The inner wall of the helical tooth ring (202) and the helical gear (9) mesh with each other.