Coal feeder coal drop pipe dredging device

Abstract

The present disclosure relates to a coal feeder coal falling pipe dredging device, comprising a mounting structure, a rotating assembly and a flushing assembly, the mounting structure is used for installing at the coal poking hole of the coal falling pipe, the mounting structure is formed with a first through hole and a second through hole; the rotating assembly comprises a rotating part, which is rotatably installed in the mounting structure; the flushing assembly comprises a flushing pipe, the diameter of the first through hole is larger than the outer diameter of the flushing pipe, the diameter of the second through hole is larger than the outer diameter of the flushing pipe, the inlet of the flushing pipe is used for connecting with a water supply device, the outlet of the flushing pipe passes through the first through hole, the rotating part and the second through hole in sequence, and the flushing pipe can rotate through the rotating part and adjust the jet angle of the water flow sprayed from the outlet of the flushing pipe. When the coal feeder coal falling pipe is blocked, the operator can flush the blocked coal in the coal feeder coal falling pipe through the high-pressure water flow sprayed from the outlet of the flushing pipe, so as to dredge the coal feeder coal falling pipe.

Description

Technical Field

[0001] This disclosure relates to the field of coal feeder duct unblocking technology, specifically, to a coal feeder duct unblocking device. Background Technology

[0002] The coal feeding system is an important component of a thermal power plant, and its operation directly affects the safety of the boiler system.

[0003] Since power plant coal typically comes from coal washing plants, it has a high moisture content and high viscosity. Therefore, when the coal slides down the coal feeder's chute, it easily clumps and adheres to the inner wall of the chute, causing blockages. This can easily lead to boiler coal shortages or even shutdown. In existing technology, when the chute becomes blocked, operators usually use a hammer to knock the coal out of the blockage, or use a tool to poke the coal out of the chute hole to clear the blockage. However, using a hammer to knock the chute can easily damage it (e.g., causing a leak), while using a tool to poke the coal out of the chute hole can lead to serious spillage. Summary of the Invention

[0004] The purpose of this disclosure is to provide a coal feeder duct unblocking device to solve the technical problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a coal feeder chute unblocking device, comprising an installation structure, a rotating assembly, and a flushing assembly. The installation structure is used to install at the coal-pumping hole on the coal feeder chute, and a first through hole and a second through hole are formed on the installation structure. The rotating assembly includes a rotating member rotatably installed within the installation structure. The flushing assembly includes a flushing pipe, wherein the diameter of the first through hole is larger than the outer diameter of the flushing pipe, and the diameter of the second through hole is larger than the outer diameter of the flushing pipe. The inlet of the flushing pipe is used to connect to a water supply device, and the outlet of the flushing pipe passes sequentially through the first through hole, the rotating member, and the second through hole. The flushing pipe can be rotated by the rotating member to adjust the spray angle of the water flow ejected from the outlet of the flushing pipe.

[0006] Optionally, the rotating member is formed as a sphere, and the mounting structure is provided with a sphere mating part that rotates with the sphere, and a through cavity is formed on the sphere for the rotating member to pass through.

[0007] Optionally, the rotating assembly further includes a sealing ring and a retaining ring. The sealing ring is sleeved on the flushing pipe and used to seal the gap between the flushing pipe and the cavity wall of the through cavity. The retaining ring is installed in the through cavity and is located on the side of the sealing ring near the first through hole and used to stop the sealing ring.

[0008] The through cavity includes a first cavity near the first through hole and a second cavity near the second through hole. The cross-sectional area of ​​the first cavity is larger than that of the second cavity. The sealing ring and the snap ring are located in the first cavity.

[0009] Optionally, the mounting structure includes a lower pressure cover and an upper pressure cover, the upper pressure cover being disposed opposite to the lower pressure cover and detachably connected to the lower pressure cover, the lower pressure cover being used to install at the coal-poke hole, the first through hole being formed on the upper pressure cover and the second through hole being formed on the lower pressure cover; the ball mating part includes a first ball cup part disposed on the upper pressure cover and a second ball cup part disposed on the lower pressure cover, the ball being rotatably clamped between the first ball cup part and the second ball cup part.

[0010] Optionally, the lower pressure cap includes a lower sleeve portion, and the upper pressure cap includes an upper sleeve portion. An external thread is formed on the outer circumferential surface of the lower sleeve portion, and an internal thread is formed on the inner circumferential surface of the upper sleeve portion. The lower sleeve portion is inserted into the upper sleeve portion and threadedly connected to the upper sleeve portion.

[0011] Optionally, the projection of the rotating member along the axis of the first through hole covers the projection of the first through hole along the axis of the first through hole, the projection of the rotating member along the axis of the second through hole covers the projection of the second through hole along the axis of the second through hole, and the projection of the first through hole along the axis of the first through hole covers the projection of the second through hole along the circumferential direction of the first through hole.

[0012] Optionally, the coal feeder duct unblocking device further includes a sealing cover, which is detachably connected to the first through hole.

[0013] Optionally, the flushing pipe includes a rigid pipe section and a flexible pipe section. The rigid pipe section passes through the first through hole, the rotating member, and the second through hole in sequence. One end of the flexible pipe section is connected to the rigid pipe section, and the other end of the flexible pipe section is used to connect to the water supply device.

[0014] Optionally, the flushing assembly further includes a switching valve and a pressure gauge, which are disposed on the flushing pipe.

[0015] With the above technical solution, since the installation structure is installed at the coal-purge hole on the coal feeder's coal drop pipe, the installation structure has a first through hole and a second through hole. The inlet of the flushing pipe is connected to the water supply device, and the outlet of the flushing pipe can pass through the first through hole, the rotating part, and the second through hole in sequence to extend into the inside of the coal drop pipe. When the coal feeder's coal drop pipe is blocked, the operator can directly turn on the water supply device and flush the blocked coal in the coal feeder's coal drop pipe with the high-pressure water jet sprayed from the outlet of the flushing pipe to clear the coal blocked in the coal feeder's coal drop pipe. Furthermore, since the rotating component is rotatably mounted within the installation structure, and the flushing pipe passes through the rotating component, operating the flushing pipe allows it to rotate via the rotating component, thereby adjusting the angle of the flushing pipe and consequently regulating the spray angle of the water jet from its outlet. This ensures that the water jet from the flushing pipe outlet can effectively flush coal located at different positions within the coal feeder's chutes, effectively preventing the water flow from failing to flush away coal blockages at different locations within the chutes and thus improving the unblocking effect. Because the diameters of both the first and second through holes are larger than the outer diameter of the flushing pipe, the first and second through holes do not interfere with the flushing pipe when the operator rotates it.

[0016] Therefore, by using the coal feeder chute unblocking device provided in this disclosure, the high-pressure water jet from the flushing pipe can be used to flush away the coal blockage in the coal feeder chute, thereby unblocking the coal feeder chute. This eliminates the need to use a hammer to strike or a tool to vibrate the coal feeder chute, or to use a tool to pry off the blockage through the shoveling hole. Compared to existing technologies that use a hammer to strike or a tool to vibrate the coal feeder chute to dislodge the blockage, the coal feeder chute unblocking device provided in this disclosure is less likely to cause damage to the chute. Furthermore, compared to existing technologies that use a tool to pry off the blockage through the shoveling hole, the coal feeder chute unblocking device provided in this disclosure is less likely to cause coal spillage.

[0017] It should be noted that since the coal used in power plants usually comes from coal washing plants, the moisture content of the coal itself is relatively high (above 9%). After the coal blocked in the coal feeder's chutes is flushed by water, the overall moisture content of the coal changes little. Furthermore, the coal is dried before being put into combustion. Therefore, the method of flushing the blocked coal with water disclosed in this invention will not affect the subsequent use of the coal.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a cross-sectional view of a coal feeder chute unblocking device provided in an exemplary embodiment of this disclosure, wherein the sealing cover is not shown.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the rotating component of the coal feeder coal pipe unblocking device provided in an exemplary embodiment of this disclosure.

[0022] Figure 3 This is a three-dimensional structural diagram of the upper pressure cover of the coal feeder coal pipe unblocking device provided in an exemplary embodiment of this disclosure.

[0023] Figure 4 This is a three-dimensional structural diagram of the lower pressure cover of the coal feeder coal pipe unblocking device provided in an exemplary embodiment of this disclosure.

[0024] Figure 5 This is a schematic diagram of the structure of the flushing assembly of the coal feeder duct unblocking device provided in an exemplary embodiment of the present disclosure when it is removed, wherein the sealing cover is shown.

[0025] Figure 6 This is a schematic diagram of a coal feeder chute clearing device provided in an exemplary embodiment of the present disclosure, which is installed on the coal feeder chute and flushes away blocked coal.

[0026] Explanation of reference numerals in the attached figures

[0027] 1-Installation structure; 11-Upper pressure cap; 111-First through hole; 112-Upper sleeve part; 12-Lower pressure cap; 121-Second through hole; 122-Lower sleeve part; 123-Installation part; 13-Spherical mating part; 131-First ball cup part; 132-Second ball cup part; 2-Rotating assembly; 21-Rotating component; 211-Spherical body; 2111-Through cavity; 2112-First cavity; 2113-Second cavity; 22-Sealing ring; 23-Snap ring; 3-Flushing assembly; 31-Flushing pipe; 311-Rigid pipe section; 312-Flexible pipe section; 32-Switch valve; 33-Pressure gauge; 4-Coal poking hole; 5-Sealing cap. Detailed Implementation

[0028] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the inner and outer contours of the corresponding component itself, and terms such as "first" and "second" are used to distinguish one element from another and do not have sequentiality or importance.

[0030] like Figures 1-6 As shown, this disclosure provides a coal feeder chute unblocking device, including an installation structure 1, a rotating assembly 2, and a flushing assembly 3. The installation structure 1 is installed at the coal-pumping hole 4 on the coal feeder chute, and a first through hole 111 and a second through hole 121 are formed on the installation structure 1. The rotating assembly 2 includes a rotating member 21, which is rotatably installed in the installation structure 1. The flushing assembly 3 includes a flushing pipe 31, the diameter of the first through hole 111 is larger than the outer diameter of the flushing pipe 31, the diameter of the second through hole 121 is larger than the outer diameter of the flushing pipe 31, the inlet of the flushing pipe 31 is used to connect to a water supply device, and the outlet of the flushing pipe 31 passes through the first through hole 111, the rotating member 21, and the second through hole 121 in sequence. The flushing pipe 31 can be rotated by the rotating member 21 to adjust the spray angle of the water flow sprayed from the outlet of the flushing pipe 31.

[0031] With the above technical solution, since the installation structure 1 is installed at the coal-purge hole 4 on the coal feeder's coal drop pipe, the installation structure 1 has a first through hole 111 and a second through hole 121. The inlet of the flushing pipe 31 is connected to the water supply device, and the outlet of the flushing pipe 31 can pass through the first through hole 111, the rotating part 21 and the second through hole 121 in sequence to extend into the inside of the coal drop pipe. When the coal feeder's coal drop pipe is blocked, the operator can directly turn on the water supply device and flush the blocked coal in the coal feeder's coal drop pipe through the high-pressure water jet sprayed from the outlet of the flushing pipe 31 to clear the coal blocked in the coal feeder's coal drop pipe. Furthermore, since the rotating component 21 is rotatably installed within the mounting structure 1, and the flushing pipe 31 passes through the rotating component 21, the flushing pipe 31 can be rotated via the rotating component 21 by operating the flushing pipe 31. This adjusts the angle of the flushing pipe 31, thereby regulating the spray angle of the water jet from the outlet of the flushing pipe 31. This allows the water jet from the outlet of the flushing pipe 31 to flush the coal located at different positions inside the coal feeder's coal drop pipe, effectively preventing the water flow from failing to flush the coal blockages at different positions inside the coal feeder's coal drop pipe during unblocking, thus improving the unblocking effect of the coal feeder's coal drop pipe. Since the diameter of the first through hole 111 is larger than the outer diameter of the flushing pipe 31, and the diameter of the second through hole 121 is also larger than the outer diameter of the flushing pipe 31, the first through hole 111 and the second through hole 121 will not interfere with the flushing pipe 31 when the operator rotates it.

[0032] Therefore, by using the coal feeder chute unblocking device provided in this disclosure, the high-pressure water jet from the flushing pipe 31 can be used to flush away the coal blockage in the coal feeder chute, thereby unblocking the coal feeder chute. This eliminates the need to use a hammer to strike or a tool to vibrate the coal feeder chute, or to use a tool to pry off the blockage through the coal-prying hole 4. Compared to existing technologies that use a hammer to strike or a tool to vibrate the coal feeder chute to dislodge the blockage, the coal feeder chute unblocking device provided in this disclosure is less likely to cause damage to the chute. Furthermore, compared to existing technologies that use a tool to pry off the blockage through the coal-prying hole 4, the coal feeder chute unblocking device provided in this disclosure is less likely to cause coal spillage.

[0033] It should be noted that since the coal used in power plants usually comes from coal washing plants, the moisture content of the coal itself is relatively high (above 9%). After the coal blocked in the coal feeder's chutes is flushed by water, the overall moisture content of the coal changes little. Furthermore, the coal is dried before being put into combustion. Therefore, the method of flushing the blocked coal with water disclosed in this invention will not affect the subsequent use of the coal.

[0034] The rotating component 21 can be any suitable structure. As one implementation method, such as... Figure 2 As shown, the rotating component 21 is formed as a sphere 211. The mounting structure 1 includes a sphere mating part 13 that rotatably engages with the sphere 211. A through cavity 2111 is formed on the sphere 211 for the rotating component 21 to pass through. It is understood that the flushing pipe 31 passes through the through cavity 2111 on the sphere 211, thus extending into the interior of the coal feeder's coal drop pipe. When the operator clears the blockage of coal inside the coal feeder's coal drop pipe, the operator can manipulate the flushing pipe 31 to rotate the sphere 211, thereby adjusting the spray angle of the water flow at the outlet of the flushing pipe 31 to flush the blockage of coal at different locations inside the coal feeder's coal drop pipe. The rotation angle of the sphere 211 can be adjusted arbitrarily, resulting in a large adjustment range for the angle of the flushing pipe 31.

[0035] In another embodiment, the rotating member 21 can also be formed as a circular plate structure, and an arc-shaped groove that cooperates with the circular plate structure is formed in the mounting structure 1, and the flushing pipe 31 passes through the circular plate structure.

[0036] To prevent the flushing water from overflowing from the gap between the through cavity 2111 and the flushing pipe 31 when flushing coal blockage in the coal feeder's chutes, the rotating assembly 2 may optionally include a sealing ring 22 and a retaining spring 23. The sealing ring 22 is fitted onto the flushing pipe 31 and seals the gap between the flushing pipe 31 and the cavity wall of the through cavity 2111. The retaining spring 23 is installed inside the through cavity 2111, located on the side of the sealing ring 22 near the first through hole 111, and serves to stop the sealing ring 22. In other words, the inner side of the sealing ring 22 is in sealing contact with the flushing pipe 31, and the outer side of the sealing ring 22 is in sealing contact with the cavity wall of the through cavity 2111. The flushing water cannot overflow from the gap between the through cavity 2111 and the flushing pipe 31, effectively preventing water from overflowing from the gap between the through cavity 2111 and the flushing pipe 31 and contaminating the construction site when operators use high-pressure water to flush the coal blockage in the chutes.

[0037] In addition, since the snap ring 23 is installed in the through cavity 2111 and is used to stop the sealing ring 22, the installation of the sealing ring 22 is reliable, effectively preventing the sealing ring 22 from coming off when water flows onto it and affecting the sealing effect.

[0038] To improve the service life of the sealing ring 22, optionally, such as Figure 1 and Figure 2 As shown, the through cavity 2111 includes a first cavity 2112 near the first through hole 111 and a second cavity 2113 near the second through hole 121. The cross-sectional area of ​​the first cavity 2112 is larger than that of the second cavity 2113. The sealing ring 22 and the retaining ring 23 are located in the first cavity 2112. Because the first cavity 2112 is close to the first through hole 111 and the cross-sectional area of ​​the first cavity 2112 is larger than that of the second cavity 2113, it is convenient to install the sealing ring 22 and the retaining ring 23.

[0039] To facilitate the rotatable mounting of the ball 211 within the mounting structure 1, optionally, as follows: Figures 1-4 As shown, the mounting structure 1 includes a lower pressure cover 12 and an upper pressure cover 11. The upper pressure cover 11 is disposed opposite to the lower pressure cover 12, and the upper pressure cover 11 is detachably connected to the lower pressure cover 12. The lower pressure cover 12 is used to be installed at the coal poking hole 4. A first through hole 111 is formed on the upper pressure cover 11, and a second through hole 121 is formed on the lower pressure cover 12. The ball mating part 13 includes a first ball cup part 131 disposed on the upper pressure cover 11 and a second ball cup part 132 disposed on the lower pressure cover 12. The ball 211 is rotatably clamped between the first ball cup part 131 and the second ball cup part 132.

[0040] Since the upper pressure cover 11 is detachably connected to the lower pressure cover 12, when installing the ball 211 in the mounting structure 1, the ball 211 can be placed into the lower pressure cover 12 first, and then the upper pressure cover can be installed on the lower pressure cover 12, so that the ball 211 is rotatably clamped between the first ball cup portion 131 and the second ball cup portion 132. Furthermore, since the upper pressure cover 11 is detachably connected to the lower pressure cover 12, if the ball 211 or the flushing pipe 31 is damaged during use, the operator can replace the ball 211 or the flushing pipe 31 by removing the upper pressure cover 11.

[0041] In order to make the upper pressure cover 11 detachably connected to the lower pressure cover 12, in one embodiment, the lower pressure cover 12 includes a lower sleeve portion 122, the upper pressure cover 11 includes an upper sleeve portion 112, an external thread is formed on the outer peripheral surface of the lower sleeve portion 122, an internal thread is formed on the inner peripheral surface of the upper sleeve portion 112, and the lower sleeve portion 122 is inserted into the upper sleeve portion 112 and threadedly connected to the upper sleeve portion 112.

[0042] In other embodiments, the upper cover 11 may have a snap-fit, and the lower cover 12 may have a slot, with the upper cover 11 snapping into the lower cover 12.

[0043] Optionally, the lower pressure cover 12 may also include a mounting portion 123 connected to the lower sleeve portion 122. The mounting portion 123 protrudes radially from the lower sleeve portion 122. A second through hole 121 is formed on the mounting portion 123. The shape and size of the mounting portion 123 may be adapted to the shape and size of the coal poking hole 4 so that the mounting portion 123 can be installed in the coal poking hole 4.

[0044] To prevent the rotating component 21 from detaching from the mounting structure 1 through the first through hole 111 or the second through hole 121, optionally, the projection of the rotating component 21 along the axis of the first through hole 111 overlaps with the projection of the first through hole 111 along its axis, and the projection of the rotating component 21 along the axis of the second through hole 121 overlaps with the projection of the second through hole 121 along its axis. Since the projection of the rotating component 21 along the axis of the first through hole 111 overlaps with the projection of the first through hole 111 along its axis, the rotating component 21 can be prevented from detaching from the mounting structure 1 through the first through hole 111 when the operator rotates the flushing pipe 31. Furthermore, since the projection of the rotating component 21 along the axis of the second through hole 121 overlaps with the projection of the second through hole 121 along its axis, the rotating component 21 will not fall into the coal feeder's coal drop pipe from the second through hole 121, effectively preventing the rotating component 21 from falling into the coal drop pipe and affecting the safe operation of the thermal power generator.

[0045] When the coal feeder's chute does not require unblocking, the flushing pipe 31 can be pulled out of the mounting structure 1, or the flushing pipe 31 and the rotating component 21 can be removed together from the mounting structure 1. To prevent coal from leaking out of the first through hole 111 of the mounting structure 1 after the flushing pipe 31 or the flushing pipe 31 and the rotating component 21 are removed from the mounting structure 1, optionally, such as Figure 5 As shown, the coal feeder's coal chute unblocking device also includes a sealing cover 5, which is detachably connected to the first through hole 111. That is, when the coal chute does not need unblocking, the operator can remove the flushing pipe 31, or the flushing pipe 31 and the rotating part 21, from the coal chute hole 4, and then install the sealing cover 5 on the first through hole 111. The sealing cover 5 seals the first through hole 111, effectively preventing coal leakage from the installation structure 1 when the coal chute does not need unblocking.

[0046] In one embodiment, the first through hole 111 may have an internal thread, and the sealing cap 5 may have an external thread. The sealing cap 5 is connected to the first through hole 111 via a threaded connection. In another embodiment, the first through hole 111 may have a groove, and the sealing cap 5 may have a snap-fit. The sealing cap 5 is snapped into the first through hole 111. This disclosure does not limit the scope of the invention.

[0047] To prevent the flushing pipe 31 from bending due to rotation during coal feeder chuting and affecting the water flow from the flushing pipe 31, alternatively, such as Figure 6 As shown, the flushing pipe 31 includes a rigid pipe section 311 and a flexible pipe section 312. The rigid pipe section 311 passes sequentially through the first through hole 111, the rotating member 21, and the second through hole 121. One end of the flexible pipe section 312 is connected to the rigid pipe section 311, and the other end is used to connect to the water supply device. Because the rigid pipe section 311 passes through the mounting structure 1 and the rotating member 21, when the operator rotates the rigid pipe section 311, it is not easily bent by force, which would affect the water flow. This effectively avoids the situation where the flushing pipe 31 is bent by force and cannot flush the coal blocking the coal chute when clearing the coal chute. The flexible pipe section 312 connects the rigid pipe section 311 to the water supply device. On the one hand, the flexible pipe section 312 can accommodate the position change caused by the rotation of the rigid pipe section 311. On the other hand, the flexible pipe section 312 can also be easily connected to water supply devices in other locations.

[0048] To facilitate control of water flow and pressure, optionally, such as Figure 6As shown, the flushing assembly 3 also includes a switch valve 32 and a pressure gauge 33, which are installed on the flushing pipe 31. The operator can adjust the opening of the switch valve 32 according to the pressure indicated by the pressure gauge 33, thereby regulating the water flow and pressure to ensure the flushing water flow is within a suitable pressure range. This effectively avoids situations where insufficient flushing water flow leads to poor unblocking or excessive water pressure damages the coal chute. Furthermore, when the operator needs to clear clogged coal, they can directly open or close the water flow via the switch valve 32 without needing to start or stop the water supply device, effectively improving flushing efficiency.

[0049] In the embodiment where the flushing pipe 31 includes a rigid pipe section 311 and a flexible pipe section 312, the aforementioned switching valve 32 can be located at the connection between the flexible pipe section 312 and the rigid pipe section 311. That is, one end of the aforementioned switching valve 32 is connected to the flexible pipe section 312, and the other end of the aforementioned switching valve 32 is connected to the rigid pipe section 311. The aforementioned pressure gauge 33 can be located on the flexible pipe section 312.

[0050] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A device for unblocking the coal feeder's chutes, characterized in that, include: The mounting structure is used to be installed at the coal-pumping hole on the coal chute, and the mounting structure has a first through hole and a second through hole. A rotating assembly, including a rotating element rotatably mounted within the mounting structure; A flushing assembly includes a flushing pipe, wherein the diameter of the first through hole is larger than the outer diameter of the flushing pipe, the diameter of the second through hole is larger than the outer diameter of the flushing pipe, the inlet of the flushing pipe is used to connect to a water supply device, and the outlet of the flushing pipe passes through the first through hole, the rotating member and the second through hole in sequence. The flushing pipe can be rotated by the rotating member and the spray angle of the water flow ejected from the outlet of the flushing pipe can be adjusted. The rotating component is formed as a sphere, and the mounting structure is provided with a sphere mating part that rotates with the sphere. A through cavity is formed on the sphere for the rotating component to pass through. The rotating assembly also includes a sealing ring and a retaining ring. The sealing ring is sleeved on the flushing pipe and is used to seal the gap between the flushing pipe and the cavity wall of the through cavity. The retaining ring is installed in the through cavity and is located on the side of the sealing ring near the first through hole and is used to stop the sealing ring. The through cavity includes a first cavity near the first through hole and a second cavity near the second through hole. The cross-sectional area of ​​the first cavity is larger than that of the second cavity. The sealing ring and the snap ring are located in the first cavity.

2. The coal feeder duct unblocking device according to claim 1, characterized in that, The mounting structure includes a lower pressure cover and an upper pressure cover. The upper pressure cover is disposed opposite to the lower pressure cover and is detachably connected to the lower pressure cover. The lower pressure cover is used to be installed at the coal poking hole. The first through hole is formed on the upper pressure cover and the second through hole is formed on the lower pressure cover. The ball fitting part includes a first ball cup part disposed on the upper pressure cover and a second ball cup part disposed on the lower pressure cover, and the ball is rotatably clamped between the first ball cup part and the second ball cup part.

3. The coal feeder duct unblocking device according to claim 2, characterized in that, The lower pressure cap includes a lower sleeve portion, and the upper pressure cap includes an upper sleeve portion. An external thread is formed on the outer circumferential surface of the lower sleeve portion, and an internal thread is formed on the inner circumferential surface of the upper sleeve portion. The lower sleeve portion is inserted into the upper sleeve portion and is threadedly connected to the upper sleeve portion.

4. The coal feeder chutes unblocking device according to any one of claims 1-3, characterized in that, The projection of the rotating component along the axis of the first through hole overlaps the projection of the first through hole along the axis of the first through hole, and the projection of the rotating component along the axis of the second through hole overlaps the projection of the second through hole along the axis of the second through hole.

5. The coal feeder chutes unblocking device according to any one of claims 1-3, characterized in that, The coal feeder duct unblocking device also includes a sealing cover, which is detachably connected to the first through hole.

6. The coal feeder duct unblocking device according to claim 1, characterized in that, The flushing pipe includes a rigid pipe section and a flexible pipe section. The rigid pipe section passes through the first through hole, the rotating member, and the second through hole in sequence. One end of the flexible pipe section is connected to the rigid pipe section, and the other end of the flexible pipe section is used to connect to the water supply device.

7. The coal feeder chutes unblocking device according to claim 1 or 6, characterized in that, The flushing assembly also includes a switching valve and a pressure gauge, which are mounted on the flushing pipe.

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