Anti-blocking coal dropping pipe
By designing anti-blocking structures in the coal-falling pipe, including fixed frames, cylindrical cam, driving shaft, driven rod and reciprocating push rod, the problem of frequent blockage of coal powder during the transportation process is solved, and efficient transportation of coal powder and long-term and stable operation of equipment are achieved.
Patent Information
- Application Number
- CN202421464703.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Coal contains a large amount of viscous coal, coal slime, pulverized coal, etc., which often leads to blockage of coal powder during the transportation of coal pipes, thereby reducing the transportation efficiency of coal powder.
An anti-blocking coal-falling pipe is designed, and an anti-blocking structure including a fixed frame, a cylindrical cam, a driving shaft, a driven rod and a reciprocating push rod are adopted. The cylindrical cam is driven to rotate by the rotation of the driving shaft, and the driven rod and the reciprocating push rod reciprocate, colliding with the blocked coal powder, unblocking the coal powder, and reducing the probability of blockage.
It effectively reduces the risk of coal powder blocking in the coal-falling pipe, improves the efficiency of coal powder conveying, reduces the number of equipment maintenance times, and saves costs.
Smart Images
Figure CN222630216U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coal transportation, and in particular to an anti-blocking coal drop pipe. Background Art
[0002] Coal powder is the main source of heat in industrial production. The coal transportation system, which transports coal powder from coal mines to various equipment, is an important link in the use of coal powder. The coal drop pipe is a general term for the pipes that transport coal in the coal transportation system. The coal transported from one section of the coal conveyor belt falls through the coal drop pipe to another section of the coal conveyor belt or enters coal storage devices such as coal bunkers.
[0003] However, coal contains a large amount of sticky coal, coal slime, pulverized coal, etc., which leads to frequent blockage of the coal drop pipe during the transportation of coal powder, thereby reducing the transportation efficiency of coal powder. Utility Model Content
[0004] The present application provides an anti-clogging coal drop pipe to solve the above-mentioned problems mentioned in the background technology.
[0005] The present application provides an anti-blocking coal chute, comprising: a coal chute body and a coal chute anti-blocking structure connected to the side wall of the coal chute body, wherein the coal chute body is a columnar structure.
[0006] The anti-blocking structure of the coal drop pipe includes a fixed frame, a cylindrical cam, a driving shaft, a driven rod, and a reciprocating push rod. The fixed frame is fixedly connected to the side wall of the coal drop pipe body, the driving shaft passes through the cylindrical cam and is fixedly connected to the cylindrical cam, both ends of the driving shaft are connected to the top and bottom of the fixed frame through bearings, the driving shaft is parallel to the length direction of the coal drop pipe body, one end of the driving shaft is fixedly connected to the output shaft of the motor, a curved groove is opened on the arc-shaped outer wall of the cylindrical cam, one end of the driven rod extends into the groove, and the other end of the driven rod extends into the coal drop pipe body and is fixedly connected to the reciprocating push rod, and the driven rod is perpendicular to the length direction of the reciprocating push rod.
[0007] A positioning rod is fixedly connected to the inner wall of the coal drop pipe body, a positioning ring is arranged at the other end of the positioning rod, the positioning rod is parallel to the direction of the driven rod, and the reciprocating push rod passes through the positioning ring.
[0008] Optionally, a plurality of concentric rings are fixedly provided on the top of the reciprocating push rod via a connecting rod, and a metal braze is provided on the top of the plurality of rings.
[0009] Optionally, a buffer cover is connected to the bottom of the compound push rod, and an end of the buffer cover with a larger diameter faces the direction of coal powder flow.
[0010] Optionally, the ratio of the bottom diameter of the buffer cover to the diameter of the coal drop pipe body is 1:3-4.
[0011] Optionally, a long strip hole is provided at the position where the side wall of the coal drop pipe body is connected to the driven rod, and the driven rod passes through the long strip hole and extends into the coal drop pipe body and is fixedly connected to the reciprocating push rod.
[0012] A baffle is arranged at a position of the driven rod located on the outer wall of the coal dropping pipe body, and a plate surface of the baffle covers the outer side of the long strip hole.
[0013] Optionally, the entire body of the coal drop pipe is made of mirror-finished composite steel plate.
[0014] Optionally, the inner wall of the coal drop pipe body is provided with a protrusion.
[0015] Optionally, a spring damper is provided at the outlet of the coal drop pipe body.
[0016] The anti-clogging coal drop pipe provided by the present application realizes efficient transportation of coal powder in the coal drop pipe, and has the following beneficial effects compared with the prior art:
[0017] (1) By setting an anti-blocking structure in the coal drop pipe, the risk of coal powder clogging in the coal drop pipe is greatly reduced. The anti-blocking structure of the coal drop pipe includes a fixed frame, a cylindrical cam, a driving shaft, a driven rod, and a reciprocating push rod. When the driving shaft rotates to drive the cylindrical cam to rotate, the end of the driven rod that extends into the groove reciprocates up and down with the groove, converting the rotation of the cylindrical cam into a linear reciprocating motion of the driven rod, so that the reciprocating push rod also performs a vertical reciprocating linear motion, collides with the blocked coal powder, and causes the coal powder to fall. In this way, the coal powder blocked in the coal drop pipe body can be cleared, and the probability of coal powder clogging in the coal drop pipe body is also greatly reduced. At the same time, the cylindrical cam has a simple structure and good stability, which is conducive to the long-term operation of the anti-blocking structure, reduces the number of equipment maintenance times, and saves costs.
[0018] (2) A metal bar is arranged at the top of the reciprocating push rod, and the top of the metal bar is conical. Multiple metal bar not only increase the contact area with the coal powder, but also are more conducive to preventing the coal drop pipe body from being blocked. At the same time, the metal bar can crush the large pieces of coal powder during the collision with the falling large pieces of coal powder, thereby reducing the risk of large pieces of coal powder blocking the coal drop pipe body during subsequent transportation. The crushing of large pieces of coal powder can also avoid the impact and wear of the coal drop pipe body during the falling process of the coal powder, which is conducive to the long-term use of the coal drop pipe body.
[0019] (3) By setting up a buffer cover, the coal powder collides with the outer wall of the buffer cover during the falling process, so that the kinetic energy of the coal powder is reduced, which is conducive to reducing the impact and wear of the coal powder on the coal drop pipe body and the belt at the outlet of the coal drop pipe body. The buffer cover is truncated cone-shaped, which is conducive to the smooth falling of the coal powder. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A schematic diagram of the structure of an anti-clogging coal chute provided in an embodiment of the present application;
[0022] Figure 2 A schematic diagram of the structure of an anti-clogging coal chute provided in another embodiment of the present application;
[0023] Figure 3 A schematic diagram of a metal brazing connection provided in one embodiment of the present application;
[0024] Figure 4 A schematic diagram of the structure of a baffle provided in one embodiment of the present application;
[0025] Figure 5 A schematic diagram of the structure of a baffle provided in another embodiment of the present application;
[0026] Description of reference numerals:
[0027] 1: coal drop pipe body, 5: bump, 6: spring damper, 110: positioning rod, 120: positioning ring, 130: long strip hole, 210: fixing frame, 220: cylindrical cam, 221: groove, 230: driving shaft, 231: bearing, 240: driven rod, 241: baffle, 250: reciprocating push rod, 260: motor, 310: connecting rod, 320: ring, 330: metal chisel, 410: buffer cover. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.
[0029] like Figure 1 As shown, the present application provides an anti-blocking coal chute, comprising: a coal chute body 1 and a coal chute anti-blocking structure connected to the side wall of the coal chute body 1, and the coal chute body 1 is a columnar structure.
[0030] The anti-blocking structure of the coal drop pipe includes a fixed frame 210, a cylindrical cam 220, a driving shaft 230, a driven rod 240, and a reciprocating push rod 250. The fixed frame 210 is fixedly connected to the side wall of the coal drop pipe body 1, the driving shaft 230 passes through the cylindrical cam 220 and is fixedly connected to the cylindrical cam 220, and both ends of the driving shaft 230 are connected to the top and bottom of the fixed frame 210 through bearings 231. The driving shaft 230 is parallel to the length direction of the coal drop pipe body 1, and one end of the driving shaft 230 is fixedly connected to the output shaft of the motor 260. The cylindrical cam 220 is provided with a curved groove 221 along the arc-shaped outer wall, one end of the driven rod 240 extends into the groove 221, and the other end of the driven rod 240 extends into the coal drop pipe body 1 and is fixedly connected to the reciprocating push rod 250, and the driven rod 240 is perpendicular to the length direction of the reciprocating push rod 250.
[0031] A positioning rod 110 is fixedly connected to the inner wall of the coal drop pipe body 1 , and a positioning ring 120 is provided at the other end of the positioning rod 110 . The positioning rod 110 is parallel to the direction of the driven rod 240 , and the reciprocating push rod 250 passes through the positioning ring 120 .
[0032] Specifically, during the transportation of coal powder, the coal powder may become blocked in the coal drop pipe, resulting in reduced coal transportation efficiency. In this application, an anti-blocking structure is provided in the coal drop pipe to greatly reduce the risk of coal powder being blocked in the coal drop pipe.
[0033] The anti-blocking structure of the coal drop pipe includes a fixed frame 210, a cylindrical cam 220, a driving shaft 230, a driven rod 240, and a reciprocating push rod 250. The fixed frame 210 is fixedly connected to the side wall of the coal drop pipe body 1, and is used to support and fix the anti-blocking structure to ensure the stability of the anti-blocking structure. The driving shaft 230 passes through the cylindrical cam 220 and is fixedly connected to the cylindrical cam 220. The two ends of the driving shaft 230 are connected to the top and bottom of the fixed frame 210 through bearings 231. The rotation of the driving shaft 230 drives the cylindrical cam 220 to rotate. A closed curved groove 221 is opened circumferentially on the outer wall of the cylindrical cam 220. One end of the driven rod 240 extends into the groove 221, and the other end of the driven rod 240 extends into the coal drop pipe body 1 and is fixedly connected to the reciprocating push rod 250. Due to the groove 2 21 has a certain distance in the axial direction, and while the driving shaft 230 drives the cylindrical cam 220 to rotate, the end of the driven rod 240 extending into the groove 221 makes up and down reciprocating motion along the groove 221, converting the rotation of the cylindrical cam 220 into the linear reciprocating motion of the driven rod 240, so that the reciprocating push rod 250 also performs vertical reciprocating linear motion, so that the coal powder blocked in the coal drop pipe body 1 can be cleared, and the probability of coal powder blocking in the coal drop pipe body 1 is greatly reduced. The motor 260 is used to provide power to drive the driving shaft 230 to rotate, thereby rotating the cylindrical cam 220.
[0034] A positioning rod 110 is fixedly connected to the inner wall of the coal drop pipe body 1, and a positioning ring 120 is provided at the other end of the positioning rod 110. The reciprocating push rod 250 passes through the positioning ring 120. This arrangement allows the positioning rod 110 and the positioning ring 120 to fix the direction of the driven rod 240, so that the driven rod 240 performs reciprocating linear motion with the rotation of the cylindrical cam 220. By setting the cylindrical cam 220, the rotation of the cylindrical cam 220 is converted into a linear reciprocating motion of the driven rod 240, which collides with the blocked coal powder, causing the coal powder to fall and clear the coal drop pipe body 1. At the same time, the cylindrical cam 220 has a simple structure and good stability, which is conducive to the long-term operation of the anti-blocking structure, reduces the number of equipment maintenance times, and saves costs.
[0035] The present application realizes efficient transportation of coal powder in the coal drop pipe through the above scheme, and greatly reduces the risk of coal powder being blocked in the coal drop pipe by setting an anti-blocking structure in the coal drop pipe. The anti-blocking structure of the coal drop pipe includes a fixed frame, a cylindrical cam, a driving shaft, a driven rod, and a reciprocating push rod. While the cylindrical cam is driven to rotate by the rotation of the driving shaft, the end of the driven rod extending into the groove reciprocates up and down with the groove, converting the rotation of the cylindrical cam into a linear reciprocating motion of the driven rod, so that the reciprocating push rod also performs vertical reciprocating linear motion, collides with the blocked coal powder, and causes the coal powder to fall, so that the coal powder blocked in the coal drop pipe body can be cleared, and the probability of coal powder being blocked in the coal drop pipe body is also greatly reduced. At the same time, the cylindrical cam has a simple structure and good stability, which is conducive to the long-term operation of the anti-blocking structure, reduces the number of equipment maintenance, and saves costs.
[0036] like Figure 2 , Figure 3 As shown, optionally, a plurality of concentric rings 320 are fixedly provided on the top of the reciprocating push rod 250 via a connecting rod 310 , and a metal brazing rod 330 is provided on the top of the plurality of rings 320 .
[0037] Specifically, a plurality of concentric rings 320 are arranged on the top of the reciprocating push rod 250, and a metal bar 330 is arranged on the top of the plurality of rings 320. The top of the metal bar 330 is conical, which not only increases the contact area with the coal powder, but also is more conducive to preventing the coal drop pipe body 1 from being blocked. At the same time, during the collision between the metal bar 330 and the falling large pieces of coal powder, the large pieces of coal powder can be crushed, thereby reducing the risk of large pieces of coal powder blocking the coal drop pipe body 1 during the subsequent transportation process. The crushing of large pieces of coal powder can also avoid the impact and wear on the coal drop pipe body 1 during the falling process of the coal powder, which is conducive to the long-term use of the coal drop pipe body 1.
[0038] like Figure 2 As shown, optionally, a buffer cover 410 is connected to the bottom of the compound push rod 250, and the end of the buffer cover 410 with a larger diameter faces the direction of coal powder flow.
[0039] Specifically, the buffer cover 410 is provided so that the coal powder collides with the outer wall of the buffer cover 410 during the falling process, so that the kinetic energy of the coal powder is reduced, thereby helping to reduce the impact and wear of the coal powder on the coal drop pipe body 1 and the belt at the outlet of the coal drop pipe body 1. The buffer cover 410 is truncated cone-shaped, which is conducive to the smooth falling of the coal powder.
[0040] Furthermore, a protective cover is provided on the outer periphery of the reciprocating push rod 250 , and the protective cover is located above the positioning ring 120 to prevent coal powder from falling into the gap between the reciprocating push rod 250 and the positioning ring 120 and affecting the movement of the reciprocating push rod 250 .
[0041] Optionally, the ratio of the bottom diameter of the buffer cover 410 to the diameter of the coal drop pipe body 1 is 1:3-4.
[0042] Specifically, such a configuration not only enables the buffer cover 410 to buffer the coal powder, but also avoids the influence of the buffer cover 410 on the falling path of the coal powder. If the bottom diameter of the buffer cover 410 is too large, the falling path of the coal powder will be reduced, affecting the transportation efficiency of the coal powder.
[0043] like Figure 4 and Figure 5 As shown, optionally, a long strip hole 130 is opened at the position where the side wall of the coal drop pipe body 1 is connected to the driven rod 240 , and the driven rod 240 extends into the coal drop pipe body 1 through the long strip hole 130 and is fixedly connected to the reciprocating push rod 250 .
[0044] A baffle 241 is provided at a position of the driven rod 240 located on the outer wall of the coal dropping pipe body 1 , and a plate surface of the baffle 241 covers the outer side of the long strip hole 130 .
[0045] Specifically, a long strip hole 130 is provided at the position where the side wall of the coal drop pipe body 1 is connected to the driven rod 240, and the long strip hole 130 is used for the driven rod 240 to pass through and provide a path for the driven rod 240 to reciprocate up and down. The baffle 241 is connected to the driven rod 240, and the plate surface of the baffle 241 is perpendicular to the length direction of the driven rod 240. At the same time, the plate surface of the baffle 241 covers the outside of the long strip hole 130, so that when the driven rod 240 reciprocates in the long strip hole 130, the baffle 241 also reciprocates with the driven rod 240, and the plate surface of the baffle 241 can always seal the long strip hole 130, so as to prevent coal powder from falling into the fixed frame 210 through the long strip hole 130, and also prevent the coal powder from escaping, saving coal powder while being conducive to the cleanliness of the surrounding environment.
[0046] Optionally, the coal drop pipe body 1 is made entirely of mirror-finished composite steel plate.
[0047] Specifically, the mirror-finished composite steel plate has a smooth surface, which can reduce the wear of the coal powder on the inner wall of the coal drop pipe body 1 during the coal powder transportation process, and also reduce the adhesion of the coal powder to the inner wall of the coal drop pipe body 1.
[0048] Optionally, a protrusion 5 is provided on the inner wall of the coal drop pipe body 1 .
[0049] Specifically, the setting of the protrusion 5 causes the coal powder to rub against the protrusion 5 first during the falling process, which reduces the friction time between the inner wall of the coal drop pipe body 1 and the coal powder, and protects the inner wall of the coal drop pipe body 1. In the prior art, an inner lining is installed on the inner wall of the coal drop pipe body 1 to protect the inner wall of the coal drop pipe body 1, but during the coal powder transportation process, there is a risk of the inner lining falling off, which requires maintenance, is time-consuming and labor-intensive, and affects the transportation of coal powder. The present application sets a protrusion 5 on the inner wall of the coal drop pipe body 1, which can protect the inner wall of the coal drop pipe body 1 while reducing the number of maintenance times, which is conducive to the long-term use of the coal drop pipe body 1.
[0050] Furthermore, a vibrator is provided on the outer side of the coal dropping pipe body 1 , and the vibrator is turned on at regular intervals to prevent coal accumulation in the coal dropping pipe body 1 .
[0051] Optionally, a spring damper 6 is provided at the outlet of the coal drop pipe body 1 .
[0052] Specifically, the outlet of the coal drop pipe body 1 is usually provided with a conveyor belt. When coal powder falls onto the conveyor belt, induced wind will be generated, causing dust. The spring damper 6 can gather the scattered coal powder and at the same time cut off the induced wind caused by the shear air of the coal powder flow, thereby greatly reducing the amount of induced wind generated by the falling movement of the coal powder and suppressing the generation of dust.
[0053] Furthermore, the cross-section of the outlet end of the coal drop pipe body 1 adopts a U-shaped design. When the coal powder falls from the outlet end of the coal drop pipe body 1 onto the conveyor belt, the U-shaped coal drop pipe outlet can play a role in gathering the flow of the coal powder, ensuring that the coal powder is centered when entering the belt without any unbalanced loading or deviation. The U-shaped cross-section is also not prone to coal accumulation on the coal drop pipe body 1. This is to further ensure that the coal flow enters the center of the belt and effectively protect the belt from the impact of the coal flow.
[0054] At the same time, the outlet end of the coal drop pipe body 1 adopts a streamlined design, so that the coal flow can be tangentially introduced into the belt along the running direction of the belt, while correcting the drop point and reducing the impact of the falling material on the belt.
[0055] The technical solution of the present application is described in detail below with reference to specific embodiments.
[0056] The operation process of the anti-blocking coal drop pipe in this embodiment is as follows:
[0057] During the transportation of coal powder, an anti-blocking structure is provided in the coal drop pipe, thereby greatly reducing the risk of coal powder being blocked in the coal drop pipe.
[0058] The entire coal drop pipe body 1 is made of a mirror-finished composite steel plate. By fixing the fixing frame 210 to the side wall of the coal drop pipe body 1, the anti-blocking structure is supported and fixed to ensure the stability of the anti-blocking structure. The motor 260 is turned on to provide power to drive the driving shaft 230 to rotate. While the driving shaft 230 drives the cylindrical cam 220 to rotate, the end of the driven rod 240 extending into the groove 221 reciprocates up and down with the groove 221, converting the rotation of the cylindrical cam 220 into a linear reciprocating motion of the driven rod 240, so that the reciprocating push rod 250 also performs a vertical reciprocating linear motion, which can clear the coal powder blocked in the coal drop pipe body 1, and also greatly reduce the probability of coal powder blocking in the coal drop pipe body 1. The positioning rod 110 and the positioning ring 120 fix the direction of the driven rod 240, so that the driven rod 240 performs a reciprocating linear motion with the rotation of the cylindrical cam 220. At the same time, a metal bar 330 is provided on the top of the reciprocating push rod 250. When the metal bar 330 collides with the falling large pieces of coal powder, the large pieces of coal powder can be crushed, thereby reducing the risk of large pieces of coal powder clogging the coal drop pipe body 1 during subsequent transportation. The crushing of large pieces of coal powder can also avoid the impact and wear on the coal drop pipe body 1 during the falling process of the coal powder, which is beneficial to the long-term use of the coal drop pipe body 1.
[0059] During the falling process, the coal powder collides with the outer wall of the buffer cover 410, which reduces the kinetic energy of the coal powder, thereby reducing the impact and wear of the coal powder on the coal drop pipe body 1 and the belt at the exit of the coal drop pipe body 1. A long strip hole 130 is provided at the position where the side wall of the coal drop pipe body 1 is connected to the driven rod 240. When the driven rod 240 reciprocates in the long strip hole 130, the plate surface of the baffle 241 can always seal the long strip hole 130 to prevent the coal powder from falling into the fixed frame 210 through the long strip hole 130, and also prevent the coal powder from escaping, saving coal powder and being beneficial to the cleanliness of the surrounding environment.
[0060] The outlet of the coal drop pipe body 1 is provided with a spring damper 6 to collect the dispersed coal powder and cut off the induced wind caused by the shear air of the coal powder flow, thereby greatly reducing the amount of induced wind generated by the falling movement of the coal powder and suppressing the generation of dust.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. An anti-blocking coal drop pipe, characterized in that: include: A coal dropping pipe body (1) and a coal dropping pipe anti-blocking structure connected to the side wall of the coal dropping pipe body (1), wherein the coal dropping pipe body (1) is a columnar structure; The anti-blocking structure of the coal drop pipe comprises a fixed frame (210), a cylindrical cam (220), a driving shaft (230), a driven rod (240), and a reciprocating push rod (250); the fixed frame (210) is fixedly connected to the side wall of the coal drop pipe body (1); the driving shaft (230) passes through the cylindrical cam (220) and is fixedly connected to the cylindrical cam (220); both ends of the driving shaft (230) are connected to the top and bottom of the fixed frame (210) through bearings (231); the driving shaft (230) is connected to the The length direction of the coal drop pipe body (1) is parallel, one end of the driving shaft (230) is fixedly connected to the output shaft of the motor (260), a curved groove (221) is provided on the cylindrical cam (220) along the arc-shaped outer wall, one end of the driven rod (240) extends into the groove (221), and the other end of the driven rod (240) extends into the coal drop pipe body (1) and is fixedly connected to the reciprocating push rod (250), and the driven rod (240) is perpendicular to the length direction of the reciprocating push rod (250); A positioning rod (110) is fixedly connected to the inner wall of the coal drop pipe body (1), and a positioning ring (120) is provided at the other end of the positioning rod (110). The positioning rod (110) is parallel to the direction of the driven rod (240), and the reciprocating push rod (250) passes through the positioning ring (120).
2. The anti-clogging coal drop pipe according to claim 1, characterized in that: A plurality of concentric circular rings (320) are fixedly arranged on the top of the reciprocating push rod (250) via a connecting rod (310), and a metal brazing rod (330) is arranged on the top of the plurality of circular rings (320).
3. The anti-clogging coal drop pipe according to claim 1, characterized in that: The bottom of the compound push rod (250) is connected to a buffer cover (410), and the end of the buffer cover (410) with a larger diameter faces the direction of coal powder flow.
4. The anti-clogging coal drop pipe according to claim 3, characterized in that: The ratio of the bottom diameter of the buffer cover (410) to the diameter of the coal drop pipe body (1) is 1:3-4.
5. The anti-clogging coal chute according to claim 1, characterized in that: A long strip hole (130) is provided at a position where the side wall of the coal drop pipe body (1) is connected to the driven rod (240); the driven rod (240) passes through the long strip hole (130) and extends into the coal drop pipe body (1), and is fixedly connected to the reciprocating push rod (250); The driven rod (240) is provided with a baffle (241) at a position on the outer wall of the coal dropping pipe body (1), and the plate surface of the baffle (241) covers the outside of the long strip hole (130).
6. The anti-blocking coal chute according to any one of claims 1 to 5, characterized in that: The coal drop pipe body (1) is entirely made of mirror-finish composite steel plate.
7. The anti-clogging coal drop pipe according to claim 6, characterized in that: The inner wall of the coal drop pipe body (1) is provided with a protrusion (5).
8. The anti-clogging coal drop pipe according to claim 7, characterized in that: The outlet of the coal drop pipe body (1) is provided with a spring damper (6).