A method of coal transport de-dusting

Abstract

The present application relates to coal transportation technical field, especially a coal transportation ash removal method, including, spraying equipment, it includes water pipe, water pool is set below water pipe water outlet end to place coal;The dredging assembly is set to the water pipe to add liquid in the water pool, the dredging assembly includes a plurality of dredging pipe that communicates with water pipe water outlet end, the nozzle is installed at the bottom of the dredging pipe, the dredging piece that the nozzle spray cavity dredges is installed in the inside of the dredging pipe.The beneficial effects of the present application are that the force generated by the water flow drives the dredging needle to repeatedly impact the nozzle spray cavity through the dredging assembly, so as to clean the scale in the spray cavity, which can effectively avoid the deposition of scale in the spray cavity, and the reminding cavity is additionally arranged to detect whether the dredging needle is broken, when the dredging needle is broken, the color of the liquid is changed to remind the staff to repair.

Description

Technical Field

[0001] This invention relates to the field of coal transportation technology, and in particular to a method for removing ash during coal transportation. Background Technology

[0002] Ash removal during coal transportation refers to the ash removal process performed on coal during transport to reduce ash content and improve combustion efficiency and environmental performance. The main methods for ash removal during coal transportation include: Mechanical ash removal: Using mechanical equipment such as vibrating screens and air classifiers to separate ash and scale from the coal. This method is suitable for coal with larger particles and higher ash content. Water washing ash removal: Immersing the coal in water and continuously spraying it with water utilizes buoyancy and fluidity to wash away ash and scale. This method is suitable for coal with finer particles and lower ash content. Ash removal during coal transportation can effectively reduce ash and slag production during combustion, reduce environmental pollution, and improve coal utilization efficiency and economic benefits. Simultaneously, ash removal can also reduce the weight of coal during transportation, lowering transportation costs.

[0003] Currently, in the coal washing and ash removal process, because the water contains dissolved salts and other substances, as the water evaporates or is sprayed, these substances will form deposits, namely scale, on the inner wall of the nozzle. Over time, the scale will gradually increase, eventually causing the nozzle to become clogged and affecting the efficiency of coal washing. Summary of the Invention

[0004] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0005] The purpose of this invention is to provide a method for removing ash during coal transportation.

[0006] Therefore, its purpose is to solve the problem of nozzle clogging caused by dissolved salts and other substances in the water during the water washing and ash removal process.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for removing ash from coal during transportation, comprising coal pretreatment: performing preliminary pretreatment on the coal to be treated, including crushing, grinding, etc., so as to better remove ash by water washing;

[0008] Adding: Liquid is added to the pool through a spraying device to completely submerge the coal in the water, and the spraying device is equipped with a draining component to remove scale.

[0009] Soaking: The pre-treated coal is soaked in a water tank. The soaking time can be adjusted as needed, generally from a few minutes to tens of minutes.

[0010] Stirring: During the soaking process, the coal and water are stirred by stirring equipment to promote the separation of ash;

[0011] Drying: The washed coal is dried to remove moisture and bring it to a state suitable for transportation and use.

[0012] As a preferred embodiment of the coal transportation ash removal method of the present invention, the method includes: a spraying device comprising a water pipe, a water tank disposed below the outlet of the water pipe for placing coal; and a dredging component disposed on the water pipe for adding liquid to the water tank. The dredging component includes a plurality of dredging pipes connected to the outlet of the water pipe, a nozzle installed at the bottom of the dredging pipe, and a dredging element for dredging the spray chamber of the nozzle installed inside the dredging pipe.

[0013] In a preferred embodiment of the coal transportation ash removal method of the present invention, a dredging piston is slidably connected inside the dredging pipe, a dredging cylinder is fixedly connected to the dredging pipe below the dredging piston, a compression spring is fixedly connected between the dredging cylinder and the dredging piston to apply elastic force to the dredging piston and abut against the protrusion on the inner wall of the dredging pipe, and a sliding rod is slidably connected inside the dredging cylinder, the top of the sliding rod being fixedly connected to the dredging piston.

[0014] In a preferred embodiment of the coal transportation ash removal method of the present invention, the unblocking component includes an annular frame slidably sleeved on the outside of the unblocking cylinder, a lifting bracket fixedly connected to the bottom of the annular frame, a pressure chamber for accommodating the sliding of the lifting bracket being opened inside the unblocking cylinder, the pressure chamber being filled with a driving solution for driving the movement of the lifting bracket, a sliding rod extending into the pressure chamber to compress the driving solution, and a tension spring fixedly connected between the lifting bracket and the unblocking cylinder.

[0015] As a preferred embodiment of the coal transportation ash removal method of the present invention, wherein: a clearing needle is provided above the nozzle to clear the spray cavity, and the top of the clearing needle is fixedly connected to the annular frame.

[0016] In a preferred embodiment of the coal transportation ash removal method of the present invention, the unblocking needle and the annular frame are both connected to each other with a reminder cavity, and a reminder liquid is added to the reminder cavity.

[0017] In a preferred embodiment of the coal transportation ash removal method of the present invention, the annular frame is provided with a squeezing layer that exerts a squeezing effect on the reminder liquid, and the squeezing layer is in contact with the inner wall of the annular frame.

[0018] As a preferred embodiment of the coal transportation ash removal method of the present invention, wherein: the connection between the unblocking needle and the annular frame is provided with a groove, and the unblocking needle is made of metal or hard plastic material.

[0019] In a preferred embodiment of the coal transportation ash removal method of the present invention, the bottom of the slide bar is penetrated by a dredging pipe, and a shielding component is installed in the penetrated part. The shielding component includes a shielding layer sleeved on the outside of the slide bar.

[0020] As a preferred embodiment of the coal transportation ash removal method of the present invention, the shielding layer is provided with multiple pairs of symmetrically distributed bent plates, and the bent plates are provided with a bending part in the middle to control the bending direction of the bent plates.

[0021] The beneficial effects of the coal transportation ash removal method of the present invention are as follows: by using the force generated by the water flow through the unblocking component to drive the unblocking needle to repeatedly impact the nozzle spray chamber, the scale in the spray chamber can be cleaned, which can effectively prevent the scale from depositing in the spray chamber. In addition, by adding a reminder chamber, the unblocking needle can be detected to see if it is broken. When the unblocking needle breaks, the color of the liquid will change to remind the staff to carry out maintenance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a flowchart of the coal transportation ash removal method of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the spraying equipment for the coal transportation ash removal method of the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the dredging pipe in the coal transportation ash removal method of the present invention.

[0026] Figure 4 This is a schematic cross-sectional view of the dredging pipe structure in the coal transportation ash removal method of the present invention.

[0027] Figure 5 This is a schematic diagram of the exploded structure of the unblocking component in the coal transportation ash removal method of the present invention.

[0028] Figure 6 This is a front view of the cross-sectional structure of the unblocking component of the coal transportation ash removal method in this invention.

[0029] Figure 7 This is a schematic diagram illustrating the structure of the nozzle for inserting a dredging needle into the coal transportation ash removal method of the present invention.

[0030] Figure 8This is a three-dimensional structural diagram of the shielding component in the coal transportation ash removal method of the present invention.

[0031] Figure 9 This is a schematic diagram of the exploded structure of the shielding component in the coal transportation ash removal method of the present invention.

[0032] In the picture:

[0033] 100. Spraying equipment; 101. Water pipes; 102. Water tank;

[0034] 200. Unclogging component; 201. Unclogging pipe; 202. Unclogging fitting; 203. Nozzle;

[0035] 201a. Unblock the piston; 201b. Unblock the cylinder;

[0036] 201b-1, Slide bar; 201b-2, Pressure chamber;

[0037] 202a, Circular frame; 202b, Lifting bracket; 202c, Unclogging needle;

[0038] 202c-1, Reminder cavity; 202c-2, Extrusion layer;

[0039] 300, shielding component; 301, shielding layer; 302, bending plate. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0043] Example 1

[0044] Reference Figure 1 This is the first embodiment of the present invention, which provides a method for removing ash during coal transportation, including coal pretreatment: performing preliminary pretreatment on the coal to be treated, including crushing, grinding, etc., so as to better remove ash by water washing;

[0045] Adding: Liquid is added to the pool through a spraying device to completely submerge the coal in the water, and the spraying device is equipped with a draining component to remove scale.

[0046] Soaking: The pre-treated coal is soaked in a water tank. The soaking time can be adjusted as needed, generally from a few minutes to tens of minutes.

[0047] Stirring: During the soaking process, the coal and water are stirred by stirring equipment to promote the separation of ash;

[0048] Drying: The washed coal is dried to remove moisture and bring it to a state suitable for transportation and use.

[0049] Specifically, during use, the coal to be processed undergoes preliminary pretreatment to facilitate subsequent ash removal. Liquid is added to the water tank through a spraying device to completely immerse the coal in water. The spraying device is equipped with a descaling component to remove scale. This component automatically cleans the scale clogging the nozzles, effectively solving the nozzle blockage problem. Subsequently, the coal is soaked in the water tank and stirred to quickly separate the ash mixed in with the coal. Finally, the coal is sent to a drying device for drying to remove moisture, bringing the coal to a state suitable for transportation and use.

[0050] Example 2

[0051] Reference Figure 2-7 This is the second embodiment of the present invention. Unlike the previous embodiment, it also includes a spraying device 100, which includes a water pipe 101 and a water tank 102 located below the outlet of the water pipe 101 to hold coal; this facilitates the rapid addition of liquid to the water tank 102 to improve the coal ash removal efficiency.

[0052] A dredging assembly 200 is installed on the water pipe 101 to add liquid to the water tank 102. The dredging assembly 200 includes multiple dredging pipes 201 connected to the water outlet of the water pipe 101. A nozzle 203 is installed at the bottom of the dredging pipe 201, and a dredging component 202 for dredging the spray chamber of the nozzle 203 is installed inside the dredging pipe 201. By adding the dredging assembly 200, the scale in the spray chamber of the nozzle 203 can be cleaned after each use, preventing scale from accumulating in the spray chamber and effectively preventing the nozzle 203 from becoming clogged.

[0053] Furthermore, a drain piston 201a is slidably connected inside the drain pipe 201. A drain cylinder 201b is fixedly connected to the drain pipe 201 below the drain piston 201a. A compression spring is fixedly connected between the drain cylinder 201b and the drain piston 201a to apply elastic force to the drain piston 201a so that it abuts against the protrusion on the inner wall of the drain pipe 201. A slide rod 201b-1 is slidably connected inside the drain cylinder 201b. The top of the slide rod 201b-1 is fixedly connected to the drain piston 201a. The unblocking component 202 includes an annular frame 202a that is slidably sleeved on the outside of the unblocking cylinder 201b. A lifting bracket 202b is fixedly connected to the bottom of the annular frame 202a. A pressure chamber 201b-2 is opened inside the unblocking cylinder 201b to accommodate the sliding of the lifting bracket 202b. The pressure chamber 201b-2 is filled with a driving solution that drives the lifting bracket 202b. A portion of the slide rod 201b-1 extends into the pressure chamber 201b-2 to compress the driving solution. A tension spring is fixedly connected between the lifting bracket 202b and the unblocking cylinder 201b. A unblocking needle 202c is provided above the nozzle 203 to unblock the spray chamber. The top of the unblocking needle 202c is fixedly connected to the annular frame 202a. When liquid is supplied to the water pipe 101, the liquid is blocked by the unblocking piston 201a, causing the unblocking piston 201a to move and allowing the liquid to spray out from the nozzle 203. At the same time, the unblocking pipe 201 pushes the slide rod 201b-1 down, causing the annular frame 202a to separate multiple unblocking needles 202c from the nozzle 203, so that they do not interfere with each other. When liquid supply is not required, the unblocking piston 201a will return to its original position under the elastic force of the compression spring, and the unblocking needles 202c will be inserted into the nozzle 203 under the action of the tension spring to squeeze out and clean the scale in the nozzle 203.

[0054] Currently, in the coal washing and ash removal process, because the water contains dissolved salts and other substances, as the water evaporates or is sprayed, these substances will form deposits on the inner wall of the nozzle, eventually causing the nozzle to become clogged and affecting the efficiency of coal washing.

[0055] To solve the above problems, a cleaning component 200 is added so that the scale in the spray chamber of the nozzle 203 can be cleaned after each use, so that the scale will not accumulate in the spray chamber and effectively prevent the nozzle 203 from becoming clogged.

[0056] Specifically, when liquid is delivered into water pipe 101, the liquid is blocked by unblocking piston 201a until the liquid pressure is greater than the elastic force of the compression spring. Therefore, unblocking piston 201a moves, allowing the liquid to be sprayed out from nozzle 203.

[0057] At the same time, the unblocking pipe 201 pushes the slide bar 201b-1 down. During the movement, the slide bar 201b-1 compresses the driving solution, so the driving solution flows and pushes the annular frame 202a up, causing the annular frame 202a to separate multiple unblocking needles 202c from the nozzle 203, so that the liquid can flow out normally without interfering with each other.

[0058] When liquid delivery is not required, the unblocking piston 201a will return to its original position under the elastic force of the compression spring. The unblocking piston 201a will simultaneously drive the slide rod 201b-1 to move, so that the unblocking needle 202c will be inserted into the nozzle 203 under the action of the tension spring, squeezing out and cleaning the scale in the nozzle 203, so that the scale will not accumulate in the spray chamber.

[0059] It should be noted that a tension spring is fixedly connected between the lifting bracket 202b and the unclogging cylinder 201b, which makes the unclogging needle 202c have a greater impact force when inserted into the nozzle 203, resulting in a better cleaning effect.

[0060] Secondly, the pressure chamber 201b-2 constrains the movement of the slide bar 201b-1, making the sliding of the unblocking cylinder 201b more stable.

[0061] In summary, by using the force generated by the water flow to drive the unblocking needle 202c to repeatedly impact the nozzle 203 spray chamber through the unblocking component 200, the scale in the spray chamber can be cleaned, which can effectively prevent scale from depositing in the spray chamber.

[0062] Example 3

[0063] Reference Figure 6-7 This is the third embodiment of the present invention, which further provides a method for removing ash during coal transportation. It includes a cleaning needle 202c and an annular frame 202a, both with interconnected internal reminder cavities 202c-1, each containing a reminder liquid. The annular frame 202a has a compression layer 202c-2 inside, which compresses the reminder liquid and adheres to the inner wall of the annular frame 202a. A notch is provided at the connection between the cleaning needle 202c and the annular frame 202a. The cleaning needle 202c is made of metal or rigid plastic. The notch causes the cleaning needle 202c to automatically break when impacted to a threshold. When the cleaning needle 202c breaks, the reminder liquid in the reminder cavity 202c-1 flows out and mixes with other liquids, changing the liquid's color. Furthermore, the compression layer 202c-2 compresses the internal reminder liquid, allowing it to be quickly discharged.

[0064] Since the unblocking needle 202c is installed inside the unblocking pipe 201, it may break during long-term use and impact. This not only makes it impossible to clean the scale in the nozzle 203, but the broken unblocking needle 202c will also affect the operation of the internal components.

[0065] To solve the above problems, an additional reminder chamber 202c-1 can be added to detect whether the unclogging needle 202c is broken. When the unclogging needle 202c is broken, the color of the liquid will change to remind the staff to carry out maintenance.

[0066] Specifically, the scoring mechanism causes the drain needle 202c to automatically break when it reaches a threshold of impact, preventing problems such as bending. When the drain needle 202c breaks, the alerting liquid in the alerting chamber 202c-1 flows out and mixes with the liquid, thus changing the color of the liquid. This allows staff to determine whether maintenance is needed by observing the liquid color. Furthermore, the squeezing layer 202c-2 can squeeze the internal alerting liquid, allowing it to be discharged quickly and avoiding the problem of slow flow of the alerting liquid resulting in an inconspicuous color change.

[0067] It should be noted that the annular frame 202a is an elastic airbag, which can compress and squeeze the internal reminder liquid, thereby expelling the reminder liquid outward in a short time.

[0068] Example 4

[0069] Reference Figure 3 and Figure 8-9 This is the third embodiment of the invention, which includes a sliding rod 201b-1 with a drain pipe 201 penetrating its bottom, and a shielding component 300 installed on the penetrating portion. The shielding component 300 includes a shielding layer 301 sleeved on the outside of the sliding rod 201b-1. The shielding layer 301 has multiple pairs of symmetrically distributed bent plates 302 inside, and each bent plate 302 has a bend in the middle to control its bending direction. When the sliding rod 201b-1 moves upward to its original position, it compresses the shielding layer 301, thereby shielding the nozzle 203 and effectively preventing residual water droplets from mixing with the outside environment. The bends on the bent plates 302 can bend in a predetermined opposite direction under pressure, thus constraining the shielding layer 301.

[0070] Because water droplets remain on the outside of nozzle 203 after use, they can easily mix with dust and clog nozzle 203. Since this mixture is located outside nozzle 203, it is difficult for the unclogging needle 202c to clean it.

[0071] As can be seen from Example 1, when the slider 201b-1 moves down, the shielding layer 301 will contract under its own elasticity, thus exposing the nozzle 203, allowing the liquid to spray out normally and avoiding interference.

[0072] When the slider 201b-1 moves upward to return to its original position, it will compress the shielding layer 301, making the shielding layer 301 flat, thereby shielding the nozzle 203. This can effectively prevent residual water droplets from mixing with the outside environment and ensure that the nozzle 203 will not be blocked.

[0073] The bending portion on the bending plate 302 can bend in the opposite direction to a preset direction when under pressure, thus constraining the deformation of the shielding layer 301. This ensures that the shape of the shielding layer 301 after being pressed can just cover the multiple nozzles 203, resulting in a good shielding effect.

[0074] Secondly, the shielding layer 301 is made of elastic rubber material, and the bending plate 302 is made of elastic plastic or metal material.

[0075] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0076] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0077] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for removing ash during coal transportation, characterized in that: include, Coal pretreatment: The coal to be processed undergoes preliminary pretreatment, including crushing and grinding, in order to better facilitate water washing and ash removal; Adding: Liquid is added to the pool through a spraying device to completely submerge the coal in the water, and the spraying device is equipped with a draining component to remove scale. Soaking: Soak the pre-treated coal in a water tank. The soaking time is adjusted as needed, ranging from a few minutes to tens of minutes. Stirring: During the soaking process, the coal and water are stirred by stirring equipment to promote the separation of ash; Drying: The washed coal is dried to remove moisture, bringing it to a state suitable for transportation and use. A spraying device (100) includes a water pipe (101) and a water tank (102) located below the outlet of the water pipe (101) for holding coal; A dredging assembly (200) is installed on the water pipe (101) to add liquid to the water tank (102). The dredging assembly (200) includes a plurality of dredging pipes (201) connected to the water outlet of the water pipe (101). A nozzle (203) is installed at the bottom of the dredging pipe (201). A dredging component (202) for dredging the spray chamber of the nozzle (203) is installed inside the dredging pipe (201). A drain pipe (201) is slidably connected to a drain piston (201a) inside. Below the drain piston (201a) is a drain cylinder (201b) fixedly connected to the drain pipe (201). A compression spring is fixedly connected between the drain cylinder (201b) and the drain piston (201a) to apply elastic force to the drain piston (201a) so that it abuts against a protrusion on the inner wall of the drain pipe (201). A sliding rod (201b-1) is slidably connected inside the drain cylinder (201b), and the top of the sliding rod (201b-1) is fixedly connected to the drain piston (201a). The unclogging component (202) includes an annular frame (202a) slidably sleeved on the outside of the unclogging cylinder (201b). A lifting bracket (202b) is fixedly connected to the bottom of the annular frame (202a). A pressure chamber (201b-2) is provided inside the unclogging cylinder (201b) to accommodate the sliding of the lifting bracket (202b). The pressure chamber (201b-2) is filled with a driving solution that drives the lifting bracket (202b) to move. A sliding rod (201b-1) extends into the pressure chamber (201b-2) to compress the driving solution. A tension spring is fixedly connected between the lifting bracket (202b) and the unclogging cylinder (201b). A clearing needle (202c) is provided above the nozzle (203) to clear the spray cavity. The top of the clearing needle (202c) is fixedly connected to the annular frame (202a). Both the unclogging needle (202c) and the annular frame (202a) have interconnected reminder cavities (202c-1), and reminder fluid is added to the reminder cavities (202c-1). The bottom of the slide bar (201b-1) is penetrated by a drain pipe (201), and a shielding component (300) is installed on the penetrated part. The shielding component (300) includes a shielding layer (301) sleeved on the outside of the slide bar (201b-1). The shielding layer (301) has multiple pairs of symmetrically distributed bent plates (302) inside, and the bent plates (302) have a bending part in the middle to control the bending direction of the bent plates (302). When liquid is delivered into the water pipe (101), the liquid is blocked by the unblocking piston (201a), so the unblocking piston (201a) moves, allowing the liquid to be sprayed out from the nozzle (203); at the same time, the unblocking piston (201a) pushes the slide rod (201b-1) down, causing the annular frame (202a) to drive multiple unblocking needles (202c) to separate from the nozzle (203) so that they do not interfere with each other; When liquid delivery is not required, the unblocking piston (201a) will return to its original position under the elastic force of the compression spring, and the unblocking needle (202c) will be inserted into the nozzle (203) under the action of the tension spring to squeeze out and clean the scale in the nozzle (203).

2. The coal transportation ash removal method as described in claim 1, characterized in that: The annular frame (202a) has an internal compression layer (202c-2) that compresses the reminder liquid, and the compression layer (202c-2) is attached to the inner wall of the annular frame (202a).

3. The coal transportation ash removal method as described in claim 2, characterized in that: The connection between the unclogging needle (202c) and the annular frame (202a) is provided with grooves, and the unclogging needle (202c) is made of metal or hard plastic material.

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