A coal chute blockage foreign matter detection device
By designing a foreign object detection device for a coal chute that combines a limiting sleeve and a docking column with an electric roller, the problem of observation difficulties caused by the self-made telescopic rod being off-center was solved, and efficient foreign object detection and removal were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHENG POWER STATION OF SHAANXI HUADIAN YUHENG COAL POWER CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the self-made telescopic rod cannot maintain a centered position when performing endoscopic inspections in coal conveying chutes, resulting in the camera being closed and unable to observe effectively, requiring multiple cleanings, which is inefficient.
A foreign object detection device for a coal conveying chute was designed. The device uses a limiting sleeve and a docking column in conjunction with an electric roller to ensure that the industrial pipeline endoscope is always kept in the center of the coal conveying chute. The electric roller and the elastic buffer wire enable the device to slide stably and be quickly removed.
Stable observation of industrial pipeline endoscopes in coal conveying chutes has been achieved, reducing equipment downtime and maintenance costs and improving detection efficiency.
Smart Images

Figure CN224303077U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of foreign object detection technology in coal chute, specifically a foreign object detection device for coal conveying chute obstruction. Background Technology
[0002] Coal chutes are key components in coal conveying systems. In actual operation, they are often blocked by foreign objects such as large pieces of gangue, wood, and metal in the coal, which can cause poor coal conveying or even blockages and affect the normal operation of the entire coal conveying system.
[0003] Coal conveying chutes mostly rely on manual inspections or troubleshooting after blockages to detect obstructions. This method is not only inefficient but also makes it difficult to detect problems in a timely manner, often resulting in prolonged equipment downtime, increased maintenance costs, and delays in coal transportation. In contrast, many modern coal conveying chutes utilize mobile phones and self-made telescopic rods to connect to industrial pipeline endoscopes. This allows for rapid detection of obstructions and wear conditions via video and photos transmitted from mobile phones, without requiring personnel to enter the chutes, pipelines, or coal bunkers.
[0004] In the current technology, when the self-made telescopic rod and the industrial pipeline endoscope are moved down, the self-made telescopic rod cannot always be kept in the center position. It is very easy for the self-made telescopic rod to deviate to one side and come into contact with the inner wall of the coal conveying chute. This causes the industrial pipeline endoscope to be blocked and unable to make effective observations, and it needs to be pulled out multiple times to clean the dirt.
[0005] Therefore, a foreign object detection device for coal conveying chutes is proposed to address the above problems. Utility Model Content
[0006] To overcome the shortcomings of existing technologies and solve the above-mentioned problems, a foreign object detection device for coal conveying chutes is proposed.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The detection device for foreign objects stuck in a coal conveying chute according to this utility model includes an electric wire and a docking post movably sleeved on one end of the electric wire, a limiting sleeve movably sleeved on the outer surface of the docking post, a retractable pushing block movably sleeved on the inner wall of the limiting sleeve, an electric roller provided on one end of the retractable pushing block, the outer surface of the docking post movably overlapping the outer surface of the retractable pushing block, and an industrial pipeline endoscope movably sleeved on the inner wall of the docking post provided on one end of the electric wire.
[0008] Preferably, a snap-fit limiting rod is fixedly connected to the top surface of the limiting sleeve, a docking sleeve is provided on the bottom surface of the limiting sleeve, and a limiting groove is formed on the outer surfaces of the limiting sleeve and the docking sleeve.
[0009] Preferably, an overlapping pad groove is provided on the inner wall of the locking limit rod and the docking sleeve, located at one edge of the limiting groove two, and an elastic buffer wire is fixedly connected to the surface of the overlapping pad groove.
[0010] Preferably, the other end of the elastic buffer wire is fixedly connected to the outer surface of the contraction push block, the surfaces of the contraction push block and the electric roller are movably sleeved on the inner wall of the limiting groove two, and a push groove is provided on the top outer surface of the contraction push block.
[0011] Preferably, a small searchlight is fixedly connected to the bottom surface of the docking sleeve, and an arc-shaped scraper is fixedly connected to the inner wall of the pushing chute, with the outer surface of the arc-shaped scraper movably overlapping the outer surface of the electric roller.
[0012] Preferably, a limiting groove is formed on the outer surface of the docking post, and the outer surface of the locking limiting rod is movably sleeved on the inner wall of the limiting groove.
[0013] Preferably, a docking limiting ring is provided on the inner wall of the docking column, and a USB interface is provided on the other end of the wire.
[0014] Preferably, the surface of the industrial pipeline endoscope is disposed on the inner wall of the docking limiting ring, and the outer surface of the docking post and located at the bottom edge position are provided with a recessed docking groove that is movably sleeved on the outer surface of the retraction pushing block.
[0015] The beneficial effects of this utility model are:
[0016] This utility model provides a foreign object detection device for a coal conveying chute. A limiting sleeve is placed on the inner wall of the pipe. At this time, a docking column is inserted into the inner wall of the limiting sleeve, and the docking column squeezes one end of multiple sets of shrinking push blocks. The shrinking push blocks drive the electric rollers to be squeezed out from the inside of the limiting sleeve, and the electric rollers are squeezed and adhered to the inner wall of the coal conveying chute. After multiple electric rollers are simultaneously adhered to the inner wall of the coal conveying chute, the position of the limiting sleeve is effectively limited. At this time, an industrial pipeline endoscope on one end of the wire is attached to the inner wall of the docking column, so that the industrial pipeline endoscope is always in the center position of the coal conveying chute.
[0017] This utility model provides a foreign object detection device for a coal conveying chute. When the docking column is inserted into the inner wall of the limiting sleeve and the locking limiting rod, the locking limiting rod on the top surface of the limiting sleeve slides up and down on the inner wall of the limiting groove. Multiple sets of locking limiting rods are used to limit the position of the docking column, so that when the docking column slides vertically on the inner wall of the limiting sleeve, the bottom end of the docking column can simultaneously squeeze and push multiple sets of shrinking pushing blocks. The electric rollers on one end of multiple shrinking pushing blocks can simultaneously squeeze on the inner wall of the coal conveying chute.
[0018] This utility model provides a foreign object detection device for a coal conveying chute. When the docking column is pressed against the outer surface of the pushing chute, the recessed docking groove on the outer surface of the docking column is used to engage and fit the tip of the shrinking pushing block, so that the shrinking pushing block is firmly adsorbed on the inner wall of the recessed docking groove, and the docking column does not move up or down excessively. After the docking column is removed from the surface of the shrinking pushing block, the elastic buffer wire on the outer surface of the overlapping padding chute is used to push the shrinking pushing block, so that the electric roller on one end of the shrinking pushing block retracts from the outside into the interior of the limiting sleeve, allowing the limiting sleeve to be quickly pulled out from the inside of the coal conveying chute. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0021] Figure 2 This is a three-dimensional structural diagram of the docking post and the limiting sleeve in this utility model;
[0022] Figure 3 This is a cross-sectional view of the unfolded three-dimensional structure of the docking post and the limiting sleeve in this utility model;
[0023] Figure 4 This is a cross-sectional three-dimensional structural diagram of the docking post and the limiting sleeve in this utility model;
[0024] Figure 5 This is a cross-sectional three-dimensional structural diagram of the contraction pushing block in this utility model;
[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the snap-fit limiting rod in this utility model.
[0026] Legend: 11. Wire; 111. USB interface; 112. Industrial pipeline endoscope; 12. Connecting post; 121. Limiting groove one; 122. Connecting limiting ring; 123. Recessed connecting groove; 13. Limiting sleeve; 131. Snap-fit limiting rod; 132. Connecting sleeve; 133. Limiting groove two; 134. Overlapping shim groove; 135. Elastic buffer wire; 136. Retraction push block; 137. Electric roller; 138. Pushing slant groove; 139. Small searchlight; 1310. Arc-shaped scraper. Detailed Implementation
[0027] 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.
[0028] Specific implementation examples are given below.
[0029] Please see Figure 1 - Figure 6 This utility model provides a foreign object detection device for a coal conveying chute, including an electric wire 11 and a docking post 12 movably sleeved on one end of the electric wire 11, a limiting sleeve 13 movably sleeved on the outer surface of the docking post 12, a retractable pushing block 136 movably sleeved on the inner wall of the limiting sleeve 13, an electric roller 137 provided on one end of the retractable pushing block 136, the outer surface of the docking post 12 movably overlapping the outer surface of the retractable pushing block 136, and an industrial pipeline endoscope 112 movably sleeved on the inner wall of the docking post 12 at one end of the electric wire 11.
[0030] During operation, the limiting sleeve 13 is placed on the inner wall of the pipeline. At this time, the docking column 12 is inserted into the inner wall of the limiting sleeve 13, and the docking column 12 is used to squeeze one end of multiple sets of shrinking push blocks 136. The shrinking push blocks 136 drive the electric rollers 137 to be squeezed out from the inside of the limiting sleeve 13, and the electric rollers 137 are pressed and adhered to the inner wall of the coal conveying chute. After multiple electric rollers 137 are simultaneously adhered to the inner wall of the coal conveying chute, the position of the limiting sleeve 13 is effectively limited. At this time, the industrial pipeline endoscope 112 on one end of the wire 11 is clipped to the inner wall of the docking column 12, so that the industrial pipeline endoscope 112 is always in the center position of the coal conveying chute.
[0031] In practical use, such as Figures 2 to 6As shown, a snap-fit limiting rod 131 is fixedly connected to the top surface of the limiting sleeve 13, and a docking sleeve 132 is provided on the bottom surface of the limiting sleeve 13. A limiting groove 133 is provided on the outer surface of the limiting sleeve 13 and the docking sleeve 132. The surfaces of the retraction push block 136 and the electric roller 137 are movably sleeved on the inner wall of the limiting groove 133.
[0032] During operation, when the docking column 12 is inserted into the inner wall of the limiting sleeve 13 and the snap-fit limiting rod 131, it slides up and down on the inner wall of the limiting groove 121 in conjunction with the snap-fit limiting rod 131 on the top surface of the limiting sleeve 13. The position of the docking column 12 is limited by multiple sets of snap-fit limiting rods 131, so that when the docking column 12 slides vertically on the inner wall of the limiting sleeve 13, the bottom end of the docking column 12 can simultaneously squeeze and push multiple sets of shrinking push blocks 136. The electric rollers 137 on one end of multiple shrinking push blocks 136 can simultaneously squeeze on the inner wall of the coal conveying chute.
[0033] In practical use, such as Figures 1 to 4 and Figure 6 As shown, a limiting groove 121 is formed on the outer surface of the docking post 12, the outer surface of the locking limiting rod 131 is movably sleeved on the inner wall of the limiting groove 121, a docking limiting ring 122 is provided on the inner wall of the docking post 12, a USB interface 111 is provided on the other end of the wire 11, the surface of the industrial pipeline endoscope 112 is set on the inner wall of the docking limiting ring 122, and an indented docking groove 123 is provided on the outer surface of the docking post 12 and located at the bottom edge, which is movably sleeved on the outer surface of the retraction pushing block 136.
[0034] When the docking post 12 is pressed against the outer surface of the pushing groove 138, the tip of the shrinking pushing block 136 is engaged and fitted by the recessed docking groove 123 on the outer surface of the docking post 12, so that the shrinking pushing block 136 is firmly attached to the inner wall of the recessed docking groove 123, and the docking post 12 will not move up or down too much.
[0035] Furthermore, such as Figures 2 to 4 and Figure 6 As shown, an overlapping pad groove 134 is provided on the inner wall of the snap-fit limiting rod 131 and the mating sleeve 132 and on one side edge of the limiting groove 133. An elastic buffer wire 135 is fixedly connected to the surface of the overlapping pad groove 134, and the other end of the elastic buffer wire 135 is fixedly connected to the outer surface of the retraction push block 136.
[0036] After the docking column 12 is removed from the surface of the shrinking push block 136, the elastic buffer wire 135 on the outer surface of the overlapping pad groove 134 pushes the shrinking push block 136, thereby causing the electric roller 137 on one end of the shrinking push block 136 to retract from the outside into the interior of the limiting sleeve 13, so that the limiting sleeve 13 can be quickly pulled out from the inside of the coal conveying chute.
[0037] In some embodiments, such as Figures 2 to 4 and Figure 6 As shown, a pushing groove 138 is provided on the top outer surface of the retraction pushing block 136, a small searchlight 139 is fixedly connected to the bottom surface of the docking sleeve 132, an arc-shaped scraper 1310 is fixedly connected to the inner wall of the pushing groove 138, and the outer surface of the arc-shaped scraper 1310 is movably connected to the outer surface of the electric roller 137.
[0038] When the electric roller 137 slides on the inner wall of the coal conveying chute, the inner wall of the coal conveying chute is illuminated by the small searchlight 139. At this time, the arc-shaped scraper 1310 on the inner wall of the retractable push block 136 overlaps with the outer surface of the electric roller 137. When the electric roller 137 rotates, the coal slag adhering to the outer surface will be squeezed and scraped off by the surface of the arc-shaped scraper 1310 under the rotation of the electric roller 137, thereby cleaning and scraping off the excess coal slag and reducing the possibility of slippage.
[0039] Working principle: The limiting sleeve 13 is placed on the inner wall of the pipe. At this time, the docking column 12 is inserted into the inner wall of the limiting sleeve 13. The docking column 12 is used to squeeze one end of multiple sets of shrinking push blocks 136, and the shrinking push blocks 136 drive the electric rollers 137 to be squeezed out from the inside of the limiting sleeve 13. The electric rollers 137 are squeezed and adhered to the inner wall of the coal conveying chute. After multiple electric rollers 137 are simultaneously adhered to the inner wall of the coal conveying chute, the position of the limiting sleeve 13 is effectively limited. At this time, the industrial pipeline endoscope 112 on one end of the wire 11 is clipped to the inner wall of the docking column 12, so that the industrial pipeline endoscope 112 is always in the center position of the coal conveying chute.
[0040] When the docking column 12 is inserted into the inner wall of the limiting sleeve 13 and the snap-fit limiting rod 131, the snap-fit limiting rod 131 on the top surface of the limiting sleeve 13 slides up and down on the inner wall of the limiting groove 121. The position of the docking column 12 is limited by multiple sets of snap-fit limiting rods 131, so that when the docking column 12 slides vertically on the inner wall of the limiting sleeve 13, the bottom end of the docking column 12 can simultaneously squeeze and push multiple sets of shrinking push blocks 136. The electric rollers 137 on one end of multiple shrinking push blocks 136 can simultaneously squeeze on the inner wall of the coal conveying chute.
[0041] When the docking column 12 is pressed against the outer surface of the pushing chute 138, the recessed docking groove 123 on the outer surface of the docking column 12 engages with the tip of the shrinking pushing block 136, so that the shrinking pushing block 136 is firmly attached to the inner wall of the recessed docking groove 123, and the docking column 12 does not move up or down excessively. After the docking column 12 is removed from the surface of the shrinking pushing block 136, the elastic buffer wire 135 on the outer surface of the overlapping padding groove 134 pushes the shrinking pushing block 136, so that the electric roller 137 on one end of the shrinking pushing block 136 retracts from the outside into the interior of the limiting sleeve 13, so that the limiting sleeve 13 can be quickly removed from the inside of the coal conveying chute.
[0042] When the electric roller 137 slides on the inner wall of the coal conveying chute, the arc-shaped scraper 1310 on the inner wall of the retracting push block 136 overlaps with the outer surface of the electric roller 137. When the electric roller 137 rotates, the coal slag adhering to the outer surface will be squeezed and scraped off by the arc-shaped scraper 1310 under the rotation of the electric roller 137, thereby cleaning and scraping off the excess coal slag and reducing the possibility of slippage.
[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A foreign object detection device for a coal conveying chute, comprising an electric wire and a connecting post movably sleeved on one end of the electric wire, and a limiting sleeve movably sleeved on the outer surface of the connecting post, characterized in that: A retractable push block is movably fitted onto the inner wall of the limiting sleeve. An electric roller is provided on one end of the retractable push block. The outer surface of the docking post is movably overlapped on the outer surface of the retractable push block. An industrial pipe endoscope is movably fitted onto the inner wall of the docking post at one end of the wire.
2. The foreign object detection device for a coal conveying chute according to claim 1, characterized in that: A snap-fit limiting rod is fixedly connected to the top surface of the limiting sleeve, and a docking sleeve is provided on the bottom surface of the limiting sleeve. A limiting groove is formed on the outer surfaces of the limiting sleeve and the docking sleeve.
3. The foreign object detection device for a coal conveying chute according to claim 2, characterized in that: An overlapping pad groove is provided on the inner wall of the snap-fit limiting rod and the docking sleeve, located at one edge of the limiting groove. An elastic buffer wire is fixedly connected to the surface of the overlapping pad groove.
4. The foreign object detection device for a coal conveying chute according to claim 3, characterized in that: The other end of the elastic buffer wire is fixedly connected to the outer surface of the retraction push block. The surfaces of the retraction push block and the electric roller are movably sleeved on the inner wall of the limiting groove two. A push groove is provided on the top outer surface of the retraction push block.
5. The foreign object detection device for a coal conveying chute according to claim 4, characterized in that: A small searchlight is fixedly connected to the bottom surface of the docking sleeve, and an arc-shaped scraper is fixedly connected to the inner wall of the pushing chute. The outer surface of the arc-shaped scraper is movably connected to the outer surface of the electric roller.
6. The foreign object detection device for a coal conveying chute according to claim 2, characterized in that: A limiting groove is formed on the outer surface of the docking column, and the outer surface of the locking limiting rod is movably sleeved on the inner wall of the limiting groove.
7. The foreign object detection device for a coal conveying chute according to claim 1, characterized in that: A docking limit ring is provided on the inner wall of the docking column, and a USB interface is provided on the other end of the wire.
8. The foreign object detection device for a coal conveying chute according to claim 1, characterized in that: The surface of the industrial pipeline endoscope is set on the inner wall of the docking limiting ring, and the outer surface of the docking column and the bottom edge position are provided with a recessed docking groove that is movably sleeved on the outer surface of the retraction pushing block.