A coal mill slagging device

Abstract

The application discloses a coal mill slag discharging device, which comprises a slag discharging mechanism, the slag discharging mechanism comprises a slag discharging boom, the top end of the slag discharging boom is fixedly connected to the bottom surface of a coal mill, the bottom end of the slag discharging boom is fixedly connected with a slag discharging cylinder, the bottom end of the slag discharging cylinder is fixedly connected with an aggregation pipe, the bottom end of the aggregation pipe is fixedly connected with a slag discharging pipe, and the top surface of the slag discharging cylinder is fixedly connected with two slag falling pipes; the reverse flip reciprocating mechanism can reset the stirring mechanism, the one-way limiting mechanism can clamp the slag conveying structure in the process of resetting the stirring mechanism, reverse rotation of the slag conveying structure is avoided, one-way rotation of the slag conveying structure is ensured, continuous rotation of the slag conveying structure can timely and quickly discharge the coal slag in the coal mill, the influence of the coal slag on the coal mill is greatly avoided, the slag discharging process is fully automatic, manual operation is not needed, time and labor are saved, and the practicality of the coal mill slag discharging device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mills, more particularly, to a coal mill slagging device. BACKGROUND

[0002] The coal mill is a machine for crushing and grinding coal into coal powder, which is an important auxiliary equipment of the coal-fired boiler. There are mainly low-speed coal mills, medium-speed coal mills and high-speed coal mills. The common medium-speed coal mills include flat disc mills, bowl mills, E-type mills and roller mills. Their common feature is that the grinding parts are composed of two sets of counter-rotating grinding bodies. The coal is crushed by being extruded and ground between the surfaces of the two sets of grinding bodies. In the process of grinding coal, the particles such as stone coal, coal gangue and stone in the coal will fall into the primary air chamber through the dynamic and static rings. Then the grinding disc rotates with the sweep rod, which sweeps the particles into the slagging device. The slagging device discharges the particles from the coal mill.

[0003] The existing coal mill slagging device is composed of a falling pipe, a pneumatic slagging valve, a slagging box with a jacking mechanism, and a sealing packing. In use, the slagging box is first lifted by the jacking mechanism and sealed with the discharge opening through the sealing packing. Then the pneumatic slagging valve is opened. The grinding disc sweeps the particles into the falling pipe through the sweep rod. After that, the particles enter the slagging box along the falling pipe. The slagging valve needs to be closed after the slagging box is full of particles. Then the slagging box is emptied and reset, and the slagging valve is opened again. However, the jacking mechanism, the slagging valve and the slagging box for dumping particles are all completed by manual operation, which is tedious, time-consuming and labor-intensive. Moreover, the collection condition of the slagging box cannot be accurately known. When dumping particles, the slagging box may be overfull or not full. The overfull slagging box will cause the particles not to be discharged in time, and the particles will be retained in the air chamber, affecting the performance of the coal mill. The not full slagging box will not only cause more useless work for manual labor, but also make the slagging valve and the jacking mechanism act more frequently, which will accelerate the wear and tear and cause air leakage. Therefore, it is urgent to design a coal mill slagging device. SUMMARY

[0004] 1. Technical problem to be solved

[0005] The existing coal mill slag discharge device in the prior art is composed of a falling pipe, a pneumatic slag discharge valve, a slag discharge box provided with a jacking mechanism, and a sealing packing, and in use, first, the slag discharge box is lifted by the jacking mechanism and is sealed with the discharge opening through the sealing packing, then the pneumatic slag discharge valve is opened, then the grinding disc sweeps the particles into the falling pipe through a sweeping rod, then the particles enter the slag discharge box along the falling pipe, the slag discharge valve needs to be closed after the slag discharge box is full, then the slag discharge box is reset after the particles are poured out, and the slag discharge valve is opened again, but the jacking mechanism, the slag discharge valve and the slag discharge box for pouring out the particles are all completed manually, the operation process is complicated, time-consuming and laborious, and the collection condition of the slag discharge box cannot be accurately known, when the particles are poured out, the slag discharge box is full or not full, the full slag discharge box cannot timely discharge the particles, the particles are retained in the air chamber, the performance of the coal mill is affected, the not full slag discharge box not only causes more useless work of human labor, but also makes the slag discharge valve and the jacking mechanism act more frequently, the wear is intensified, and the air leakage problem is easily caused, and the purpose of the present application is to provide a coal mill slag discharge device which can well solve the problems in the background art.

[0006] 2. Technical solution

[0007] To solve the above problems, the present application adopts the following technical solution.

[0008] A coal mill slag discharge device, comprising a slag discharge mechanism, the slag discharge mechanism comprising a slag discharge boom, the top end of the slag discharge boom being fixedly connected to the bottom surface of the coal mill, the bottom end of the slag discharge boom being fixedly connected with a slag discharge cylinder, the bottom end of the slag discharge cylinder being fixedly communicated with an aggregation pipe, the bottom end of the aggregation pipe being fixedly communicated with a slag discharge pipe, the top surface of the slag discharge cylinder being fixedly communicated with two slag falling pipes, the top end of the slag falling pipe being communicated with a primary air chamber at the bottom of the coal mill.

[0009] Preferably, it further comprises a slag conveying structure, the slag conveying structure comprising a slag conveying ring, the slag conveying ring being arranged inside the slag discharge cylinder, a plurality of sealing ring grooves being formed on the outside of the slag conveying ring, the plurality of sealing ring grooves being uniformly distributed on the outside of the slag conveying ring, a sealing ring being embedded in the inside of the sealing ring groove, a slag conveying hole being formed on the surface of the slag conveying ring between adjacent two sealing ring grooves, and a sealing disc being formed between adjacent two slag conveying holes.

[0010] Preferably, the closed gas structure further comprises arc-shaped closed gas strips fixedly connected to the inner wall of the slag discharge cylinder, the number of the arc-shaped closed gas strips is two, the two arc-shaped closed gas strips are symmetrically distributed inside the slag discharge cylinder, the arc-shaped closed gas strips are internally provided with arc-shaped closed gas holes, the end surface of the arc-shaped closed gas strips is provided with a gradually expanding opening, the gradually expanding opening is in communication with the arc-shaped closed gas hole, the slag conveying ring is slidingly inserted into the arc-shaped closed gas hole, the maximum diameter of the gradually expanding opening is greater than the diameter of the slag conveying ring, the sealing ring and the sealing disc are slidingly inserted into the arc-shaped closed gas hole, and the bottom end of the slag falling pipe is fixedly inserted into the top surface of the arc-shaped closed gas strip and is in communication with the arc-shaped closed gas hole and matched with the slag conveying hole.

[0011] Preferably, the weighing mechanism further comprises a weighing recess and a protective shell, the weighing recess is provided on the bottom surface of the arc-shaped closed gas hole cavity and corresponds to the bottom end of the slag falling pipe, a weighing block is movably inserted into the inside of the weighing recess, the top end of the weighing block extends into the inside of the corresponding slag conveying hole, a concave arc surface groove is provided on the top surface of the weighing block and is matched with the inner wall of the arc-shaped closed gas hole, the protective shell is fixedly connected to the bottom surface of the arc-shaped closed gas strip, a weighing sliding rod is fixedly connected to the bottom surface of the weighing block, the bottom end of the weighing sliding rod extends into the inside of the protective shell and is fixedly connected to a limiting stop disc, the weighing sliding rod is movably inserted into the arc-shaped closed gas strip, a weighing spring located inside the weighing recess is movably sleeved to the outside of the weighing sliding rod, the top end of the weighing spring is fixedly connected to the bottom surface of the weighing block, the bottom end of the weighing spring is fixedly connected to the bottom surface of the weighing recess cavity, an insulating touch rod located in the middle of the weighing block is fixedly connected to the bottom surface of the weighing block, the bottom end of the insulating touch rod extends into the inside of the protective shell, the bottom end of the insulating touch rod is in the shape of a sharp cone, and a critical controller is fixedly connected to the bottom surface of the protective shell cavity.

[0012] Preferably, the critical controller comprises an annular embedding groove and an insulating seat, the annular embedding groove is provided on the outer surface of the insulating touch rod, a conductive ring is fixedly embedded in the inside of the annular embedding groove, the surface of the conductive ring is flush with the surface of the insulating touch rod, the bottom end of the insulating seat is fixedly connected to the bottom surface of the protective shell cavity, the top end of the insulating seat is fixedly connected to the bottom surface of the arc-shaped closed gas strip, two buffer cavities are provided in the inside of the insulating seat and are symmetrically distributed left and right in the inside of the insulating seat, a limiting stop ring is fixedly connected to the inner wall of the buffer cavity, an elastic tensile rope is fixedly connected to the inner wall of the buffer cavity cavity close to the central axis of the insulating seat, the other end of the elastic tensile rope passes through the limiting stop ring and is fixedly connected to an insulating piston, the insulating piston is in contact with the limiting stop ring, a conductive long strip is fixedly inserted into the insulating piston, one end of the conductive long strip passes through the limiting stop ring and is provided with a chamfered inclined surface, a socket hole located in the middle of the top surface of the insulating seat is provided, the bottom end of the insulating touch rod is movably inserted into the inside of the socket hole, the socket hole is matched with the insulating touch rod, the end of the conductive long strip extends into the inside of the socket hole and is matched with the insulating touch rod, and the conductive long strip is electrically connected to the intelligent controller through a lead wire.

[0013] Preferably, the intercepting structure comprises an intercepting cylinder fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting partition plate fixedly connected to the top of the inner wall of the intercepting cylinder, an intercepting piston drivingly connected to the bottom surface of the intercepting partition plate through an intercepting spring, the intercepting piston slidingly inserted into the intercepting cylinder, an intercepting short pin fixedly connected to the bottom surface of the intercepting piston, the bottom end of the intercepting short pin extending to the outside of the intercepting cylinder and adapted to the sealing disc, an intercepting lead fixedly connected to the top surface of the intercepting cylinder through the intercepting spring and the intercepting partition plate, an intercepting column fixedly connected to the top of the right side of the intercepting cylinder, the top surface of the intercepting column fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting rod slidingly inserted into the intercepting column, the right end of the intercepting rod extending out of the right end surface of the intercepting column and movably embedded with a steel ball, the left end of the intercepting rod penetrating through the intercepting cylinder and fixedly connected to a limiting disc, the intercepting rod located above the intercepting partition plate, a fixed groove formed in the left side of the intercepting cylinder, the limiting disc movably inserted into the inner part of the fixed groove, and the intercepting lead movably inserted into the inner part of the intercepting rod.

[0014] Preferably, the intercepting structure comprises an intercepting cylinder fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting partition plate fixedly connected to the top of the inner wall of the intercepting cylinder, an intercepting piston drivingly connected to the bottom surface of the intercepting partition plate through an intercepting spring, the intercepting piston slidingly inserted into the intercepting cylinder, an intercepting short pin fixedly connected to the bottom surface of the intercepting piston, the bottom end of the intercepting short pin extending to the outside of the intercepting cylinder and adapted to the sealing disc, an intercepting lead fixedly connected to the top surface of the intercepting cylinder through the intercepting spring and the intercepting partition plate, an intercepting column fixedly connected to the top of the right side of the intercepting cylinder, the top surface of the intercepting column fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting rod slidingly inserted into the intercepting column, the right end of the intercepting rod extending out of the right end surface of the intercepting column and movably embedded with a steel ball, the left end of the intercepting rod penetrating through the intercepting cylinder and fixedly connected to a limiting disc, the intercepting rod located above the intercepting partition plate, a fixed groove formed in the left side of the intercepting cylinder, the limiting disc movably inserted into the inner part of the fixed groove, and the intercepting lead movably inserted into the inner part of the intercepting rod.

[0015] Preferably, the intercepting structure comprises an intercepting cylinder fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting partition plate fixedly connected to the top of the inner wall of the intercepting cylinder, an intercepting piston drivingly connected to the bottom surface of the intercepting partition plate through an intercepting spring, the intercepting piston slidingly inserted into the intercepting cylinder, an intercepting short pin fixedly connected to the bottom surface of the intercepting piston, the bottom end of the intercepting short pin extending to the outside of the intercepting cylinder and adapted to the sealing disc, an intercepting lead fixedly connected to the top surface of the intercepting cylinder through the intercepting spring and the intercepting partition plate, an intercepting column fixedly connected to the top of the right side of the intercepting cylinder, the top surface of the intercepting column fixedly connected to the top surface of the inner cavity of the slag discharge cylinder, an intercepting rod slidingly inserted into the intercepting column, the right end of the intercepting rod extending out of the right end surface of the intercepting column and movably embedded with a steel ball, the left end of the intercepting rod penetrating through the intercepting cylinder and fixedly connected to a limiting disc, the intercepting rod located above the intercepting partition plate, a fixed groove formed in the left side of the intercepting cylinder, the limiting disc movably inserted into the inner part of the fixed groove, and the intercepting lead movably inserted into the inner part of the intercepting rod.

[0016] Preferably, the dialing power mechanism further comprises a power disc box and an intelligent controller, the bottom end of the power disc box is fixedly connected to the top surface of the residue discharging cylinder and located at the center position, a power motor is fixedly installed on the top surface of the power disc box, the bottom end of the bottom output shaft of the power motor extends to the inside of the power disc box and is fixedly sleeved with a dialing swing arm, a gradually centrifugal track groove is formed on the upper and lower surfaces of the inner cavity of the power disc box, a guide track block is slidably inserted into the gradually centrifugal track groove, a dialing vertical rod is fixedly connected between the two guide track blocks, the dialing vertical rod is vertically arranged, the intelligent controller is fixedly installed on the top surface of the residue discharging cylinder, and the intelligent controller is electrically connected with the power motor.

[0017] Preferably, the reciprocating mechanism further comprises a reciprocating shaft, the reciprocating shaft is movably inserted into the bottom surface of the power disc box, the top end of the reciprocating shaft extends to the inside of the power disc box and is fixedly connected with a reciprocating upper disc, a guide sliding hole is formed in the reciprocating upper disc, the dialing vertical rod is slidably inserted into the guide sliding hole, a reciprocating movable piece is fixedly connected to the side surface of the reciprocating upper disc, the other end of the reciprocating movable piece is slidably connected with the inner wall of the power disc box, a circular arc-shaped rod is fixedly connected to the surface of the reciprocating movable piece, an end cap is fixedly connected to the other end of the circular arc-shaped rod, a return spring and a reciprocating fixed piece are movably sleeved with the circular arc-shaped rod, the reciprocating movable piece is drivingly connected with the reciprocating fixed piece through the return spring, the right end of the reciprocating fixed piece is fixedly connected to the inner wall of the power disc box, the left end of the reciprocating fixed piece is slidably connected with the side surface of the reciprocating upper disc, the bottom end of the reciprocating shaft extends to the inside of the residue discharging cylinder and is fixedly sleeved with a reciprocating lower disc, one end of the dialing strip is fixedly connected to the side surface of the reciprocating lower disc, an isosceles slope block in the clockwise direction of the dialing strip is fixedly connected to the side surface of the reciprocating lower disc, the isosceles slope block is matched with the intercepting rod, and the steel ball at the end of the intercepting rod rolls on the side surface of the reciprocating lower disc.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the application has the following advantages:

[0020] The airtight structure seals off localized areas of the slag conveying structure, allowing slag to enter within a sealed environment. This prevents air leakage from the coal mill. A weighing mechanism weighs the slag entering the conveying structure, preventing overloading and ensuring it doesn't stagnate. This reduces wasted effort, lowers the structure's operating frequency, and extends its service life. A lever-driven power mechanism drives a reciprocating mechanism to rotate in both directions. The forward rotation triggers an intercepting structure, preventing it from obstructing the clockwise rotation of the slag conveying structure. Simultaneously, the forward-rotating reciprocating mechanism, through a lever mechanism, drives the slag conveying structure clockwise, thus preventing it from obstructing the clockwise rotation of the slag conveying structure. The slag inside the mill is carried out from the airtight structure, and the slag carried out by the slag conveying structure is discharged through the slag discharge mechanism. The internal space of the coal mill is not connected to the outside during the entire slag discharge process, avoiding problems caused by air leakage in the coal mill. The reciprocating mechanism with reverse flipping can reset the actuating mechanism. The unidirectional limiting mechanism can lock the slag conveying structure during the reset process of the actuating mechanism, preventing the slag conveying structure from rotating in the opposite direction and ensuring unidirectional rotation of the slag conveying structure. The continuous rotation of the slag conveying structure can discharge the slag inside the coal mill in a timely and rapid manner, greatly minimizing the impact of slag on the coal mill. Moreover, the slag discharge process is fully automated and does not require manual operation, saving time and labor and improving the practicality of the coal mill slag discharge device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Internal structure diagram;

[0023] Figure 3 For the present invention Figure 2 A top-down view of the internal structure;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of the slag conveying structure;

[0025] Figure 5 For the present invention Figure 4 A bottom view;

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of the structure of the arc-shaped air-tight strip;

[0027] Figure 7 For the present invention Figure 6 Internal structure diagram;

[0028] Figure 8 For the present invention Figure 6 Cross-sectional view at point AA;

[0029] Figure 9 Internal structure diagram of the sub-critical controller in the present application Figure 8 Internal structure diagram of the sub-critical controller in the present application

[0030] Figure 10 Internal structure diagram of the sub-critical controller in the present application Figure 2 Internal structure diagram of the sub-critical controller in the present application

[0031] Figure 11 Internal structure diagram of the sub-critical controller in the present application Figure 3 Internal structure diagram of the sub-critical controller in the present application

[0032] Figure 12 Internal structure diagram of the sub-critical controller in the present application Figure 11 Internal structure diagram of the sub-critical controller in the present application

[0033] Figure 13 Internal structure diagram of the sub-critical controller in the present application Figure 3 Internal structure diagram of the sub-critical controller in the present application

[0034] Figure 14 Internal structure diagram of the sub-critical controller in the present application Figure 2 Internal structure diagram of the sub-critical controller in the present application

[0035] Figure 15 Internal structure diagram of the sub-critical controller in the present application Figure 14 Internal structure diagram of the sub-critical controller in the present application

[0036] Figure 16 Internal structure diagram of the sub-critical controller in the present application Figure 14 Internal structure diagram of the sub-critical controller in the present application

[0037] Explanation of the reference numerals in the drawings:

[0038] 1, the mechanism of slag discharge; 11, the discharge of slag boom; 12, the discharge of slag cylinder; 13, the gathering pipe; 14, the discharge of slag pipe; 15, the fall of slag pipe; 2, the structure of slag delivery; 21, the delivery of slag ring; 22, the sealing ring groove; 23, the sealing ring; 24, the delivery hole; 25, the sealing disc; 3, the structure of closed gas; 31, the arc-shaped closed gas strip; 32, the arc-shaped closed gas hole; 33, the gradually expanding opening; 4, the weighing mechanism; 41, the weighing recess; 42, the weighing block; 43, the concave cambered groove; 44, the protective shell; 45, the weighing slide rod; 46, the limit stop disc; 47, the weighing spring; 48, the insulating sensitive rod; 49, the critical controller; 491, the annular embedded groove; 492, the conductive ring; 493, the insulating seat; 494, the buffer cavity; 495, the limit stop ring; 496, the elastic stretching rope; 497, the insulating piston; 498, the conductive long strip; 499, the socket hole; 5, the intercepting structure; 501, the intercepting cylinder; 502, the intercepting baffle; 503, the intercepting spring; 504, the intercepting piston; 505, the intercepting short pin; 506, the intercepting lead; 507, the intercepting column; 508, the intercepting rod; 509, the fixed recess; 510, the limit disc; 6, the actuating mechanism; 61, the actuating strip; 62, the actuating recess; 63, the turnover lever; 64, the turnover arm; 65, the counterweight strip; 66, the movable magnetic strip; 67, the fixed magnetic strip; 7, the one-way limiting mechanism; 71, the arc-shaped flat tube; 72, the shaping lever; 73, the pressure spring; 74, the pressure piston; 75, the inclined plane plate; 8, the actuating power mechanism; 81, the power disc box; 82, the power motor; 83, the actuating swing arm; 84, the gradually diverging centrifugal track groove; 85, the guide track block; 86, the actuating vertical rod; 87, the intelligent controller; 9, the reciprocating mechanism; 91, the reciprocating shaft; 92, the reciprocating upper disc; 93, the guide sliding hole; 94, the reciprocating movable piece; 95, the circular arc-shaped lever; 96, the end cap; 97, the reset spring; 98, the reciprocating fixed piece; 99, the reciprocating lower disc; 910, the isosceles slope block. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] Please refer to Figures 1-16The utility model provides a coal mill discharging device, including discharging mechanism 1, discharging mechanism 1 includes discharging boom 11, and the top end fixed connection of discharging boom 11 is on the bottom surface of coal mill, and the bottom end fixed connection of discharging boom 11 has discharging cylinder 12, and the bottom end fixed communication of discharging cylinder 12 has gathered pipe 13, and the bottom end fixed communication of gathered pipe 13 has discharging pipe 14, and the top surface fixed communication of discharging cylinder 12 has two drop slag pipes 15, and the top end of drop slag pipe 15 is communicated with the primary air chamber of coal mill bottom.

[0041] Further including the structure of conveying slag 2, the structure of conveying slag 2 includes conveying ring 21, and conveying ring 21 is arranged in the inside of discharging cylinder 12, and a plurality of sealing ring grooves 22 are formed in the outside of conveying ring 21, and a plurality of sealing ring grooves 22 are evenly distributed in the outside of conveying ring 21, and sealing ring 23 is embedded in the inside of sealing ring groove 22, and conveying hole 24 is formed in the surface of conveying ring 21 between adjacent two sealing ring grooves 22, and sealing disc 25 is formed between adjacent two conveying holes 24.

[0042] Further including the structure of closing gas 3, the structure of closing gas 3 includes arc-shaped closing strip 31, and arc-shaped closing strip 31 is fixedly connected on the inner wall of discharging cylinder 12, and the number of arc-shaped closing strip 31 is two, and two arc-shaped closing strip 31 is symmetrically distributed in the inside of discharging cylinder 12, and arc-shaped closing hole 32 is formed in the inside of arc-shaped closing strip 31, and gradually expanding opening 33 is formed in the end surface of arc-shaped closing strip 31, and gradually expanding opening 33 is communicated with arc-shaped closing hole 32, and conveying ring 21 is slidably inserted in the inside of arc-shaped closing hole 32, and the maximum diameter of gradually expanding opening 33 is greater than the diameter of conveying ring 21, and sealing ring 23 and sealing disc 25 are slidably inserted in the inside of arc-shaped closing hole 32, and the bottom end of drop slag pipe 15 is fixedly inserted on the top surface of arc-shaped closing strip 31 and is communicated with arc-shaped closing hole 32 and is matched with conveying hole 24.

[0043] The weighing mechanism 4 comprises a weighing recess 41 and a protective shell 44, the weighing recess 41 is arranged on the bottom surface of the inner cavity of the arc-shaped closed gas hole 32 and corresponds to the bottom end of the slag falling pipe 15, a weighing block 42 is movably inserted into the weighing recess 41, the top end of the weighing block 42 extends to the inside of the corresponding slag conveying hole 24, a concave arc groove 43 is arranged on the top surface of the weighing block 42 and is matched with the inner wall of the arc-shaped closed gas hole 32, the protective shell 44 is fixedly connected to the bottom surface of the arc-shaped closed gas strip 31, a weighing slide rod 45 is fixedly connected to the bottom surface of the weighing block 42, the bottom end of the weighing slide rod 45 extends to the inside of the protective shell 44 and is fixedly connected to a limiting flapper 46, the weighing slide rod 45 is movably inserted into the arc-shaped closed gas strip 31, a weighing spring 47 is movably sleeved to the outside of the weighing slide rod 45 and is located in the inside of the weighing recess 41, the top end of the weighing spring 47 is fixedly connected to the bottom surface of the weighing block 42, the bottom end of the weighing spring 47 is fixedly connected to the bottom surface of the inner cavity of the weighing recess 41, an insulating touch rod 48 is fixedly connected to the middle of the bottom surface of the weighing block 42 and extends to the inside of the protective shell 44, the bottom end of the insulating touch rod 48 is in the shape of a sharp cone, and a critical controller 49 is fixedly connected to the bottom surface of the inner cavity of the protective shell 44.

[0044] The critical controller 49 comprises an annular embedding groove 491 and an insulating seat 493, the annular embedding groove 491 is arranged on the outer surface of the insulating touch rod 48, a conductive ring 492 is fixedly embedded in the inside of the annular embedding groove 491 and is flush with the surface of the insulating touch rod 48, the bottom end of the insulating seat 493 is fixedly connected to the bottom surface of the inner cavity of the protective shell 44, the top end of the insulating seat 493 is fixedly connected to the bottom surface of the arc-shaped closed gas strip 31, two buffer cavities 494 are arranged in the inside of the insulating seat 493 and are symmetrically distributed left and right, a limiting flapper 495 is fixedly connected to the inner wall of each buffer cavity 494, an elastic tensile cord 496 is fixedly connected to the inner wall of the inner cavity of each buffer cavity 494 close to the central axis of the insulating seat 493, the other end of the elastic tensile cord 496 passes through the limiting flapper 495 and is fixedly connected to an insulating piston 497, the insulating piston 497 is in contact with the limiting flapper 495, a conductive strip 498 is fixedly inserted into the insulating piston 497, one end of the conductive strip 498 passes through the limiting flapper 495 and is provided with a chamfered inclined surface, a socket hole 499 is arranged in the middle of the top surface of the insulating seat 493, the bottom end of the insulating touch rod 48 is movably inserted into the inside of the socket hole 499, the socket hole 499 is matched with the insulating touch rod 48, the end of the conductive strip 498 extends to the inside of the socket hole 499 and is matched with the insulating touch rod 48, and the conductive strip 498 is electrically connected to the intelligent controller 87 through a wire.

[0045] It also includes an interception structure 5, which includes an interception cylinder 501. The top surface of the interception cylinder 501 is fixedly connected to the top surface of the inner cavity of the slag discharge cylinder 12. An interception baffle 502 located at the top of the interception cylinder 501 is fixedly connected to the inner wall of the interception cylinder 501. An interception piston 504 is connected to the bottom surface of the interception baffle 502 through an interception spring 503. The interception piston 504 is slidably inserted into the inside of the interception cylinder 501. An interception pin 505 is fixedly connected to the bottom surface of the interception piston 504. The bottom end of the interception pin 505 extends to the outside of the interception cylinder 501 and is adapted to the sealing disc 25. An interception lead wire 506 is fixedly connected to the top surface of the interception piston 504. The top end of the interception lead wire 506 passes through the interception spring 503 and the interception baffle 502 and is fixedly connected to the top surface of the interception piston 504. An intercepting column 507 is fixedly connected to the top surface of the inner cavity of the intercepting cylinder 501. An intercepting column 507 is fixedly connected to the top surface of the intercepting cylinder 501. An intercepting rod 508 is slidably inserted into the inside of the intercepting column 507. The right end of the intercepting rod 508 extends from the right end face of the intercepting column 507 and is movably embedded with a steel ball. The left end of the intercepting rod 508 passes through the intercepting cylinder 501 and is fixedly connected to a limiting disc 510. The intercepting rod 508 is located above the intercepting partition 502. A fixing groove 509 is opened on the left side of the intercepting cylinder 501. The limiting disc 510 is movably inserted into the fixing groove 509. An intercepting lead wire 506 is movably inserted into the inside of the intercepting rod 508.

[0046] It also includes an actuating mechanism 6, which includes an actuating bar 61. The actuating bar 61 is located inside the slag discharge cylinder 12 and above the slag conveying structure 2. The actuating bar 61 is located in the counterclockwise direction of the intercepting cylinder 501. An actuating groove 62 is opened on the surface of the actuating bar 61 at its right end. A flipping rod 63 is movably sleeved on the inner wall of the actuating groove 62. A flipping arm 64 is fixedly sleeved on the outside of the flipping rod 63. The flipping arm 64 is movably inserted into the inside of the actuating groove 62. A counterweight bar 65 is fixedly connected to the bottom end of the flipping arm 64. The counterweight bar 65 is adapted to the sealing disc 25. A movable magnetic strip 66 is fixedly inserted into the flipping arm 64. A fixed magnetic strip 67 is fixedly inserted into the inner wall of the actuating groove 62. The fixed magnetic strip 67 and the movable magnetic strip 66 are magnetically attracted to each other.

[0047] It also includes a one-way limiting mechanism 7, which includes an arc-shaped flat tube 71. The arc-shaped flat tube 71 is fixedly connected to the top surface of the inner cavity of the slag discharge cylinder 12 and is located in the counterclockwise direction of the actuating bar 61. A shaping rod 72 is fixedly connected between the upper and lower surfaces of the inner cavity of the arc-shaped flat tube 71. A pressure spring 73 and a pressure piston 74 are movably sleeved on the outside of the shaping rod 72. The pressure piston 74 is connected to the top surface of the inner cavity of the arc-shaped flat tube 71 through the pressure spring 73. An inclined plate 75 is fixedly connected to the bottom surface of the pressure piston 74. The bottom end of the inclined plate 75 extends to the outside of the arc-shaped flat tube 71. The inclined plate 75 is adapted to the sealing disc 25.

[0048] It also includes a paddle power mechanism 8, which includes a power disc box 81 and an intelligent controller 87. The bottom end of the power disc box 81 is fixedly connected to the top surface of the slag discharge cylinder 12 and is located at its center. A power motor 82 is fixedly installed on the top surface of the power disc box 81. The bottom end of the output shaft of the power motor 82 extends into the interior of the power disc box 81 and is fixedly sleeved with a paddle swing arm 83. Gradual centrifugal track grooves 84 are opened on both the upper and lower surfaces of the inner cavity of the power disc box 81. A guide track block 85 is slidably inserted into the interior of the gradual centrifugal track groove 84. A paddle vertical rod 86 is fixedly connected between the two guide track blocks 85. The paddle vertical rod 86 is vertical. The intelligent controller 87 is fixedly installed on the top surface of the slag discharge cylinder 12 and is electrically connected to the power motor 82.

[0049] It also includes a reciprocating mechanism 9, which includes a reciprocating shaft 91. The reciprocating shaft 91 is movably inserted into the bottom surface of the power distribution box 81. The top end of the reciprocating shaft 91 extends into the interior of the power distribution box 81 and is fixedly connected to a reciprocating upper plate 92. A guide sliding hole 93 is provided on the reciprocating upper plate 92. A toggle rod 86 is slidably inserted into the interior of the guide sliding hole 93. A reciprocating movable plate 94 is fixedly connected to the side of the reciprocating upper plate 92. The other end of the reciprocating movable plate 94 is slidably connected to the inner wall of the power distribution box 81. An arc-shaped rod 95 is fixedly connected to the surface of the reciprocating movable plate 94. An end cap 96 is fixedly connected to the other end of the arc-shaped rod 95. A return spring 97 is movably sleeved on the outside of the arc-shaped rod 95. The reciprocating fixed plate 98 and the reciprocating movable plate 94 are connected to the reciprocating fixed plate 98 via a return spring 97. The right end of the reciprocating fixed plate 98 is fixedly connected to the inner wall of the power disc box 81, and the left end of the reciprocating fixed plate 98 is slidably connected to the side of the reciprocating upper plate 92. The bottom end of the reciprocating shaft 91 extends into the interior of the slag discharge cylinder 12 and is fixedly sleeved with the reciprocating lower plate 99. One end of the actuating bar 61 is fixedly connected to the side of the reciprocating lower plate 99. An isosceles slope block 910 located in the clockwise direction of the actuating bar 61 is fixedly connected to the side of the reciprocating lower plate 99. The isosceles slope block 910 is adapted to the intercepting bar 508, and the steel ball at the end of the intercepting bar 508 rolls on the side of the reciprocating lower plate 99.

[0050] Working principle:

[0051] Firstly, the coal mill sweeps the particles into the slag chute 15 through the sweeping rod, then the particles slide into the corresponding slag conveying hole 24 inside the arc-shaped closed air hole 32 under the action of gravity, then the particles fall into the concave arc groove 43 and exert pressure on the symmetrical weighing block 42 under the action of gravity, the gravity received by the weighing block 42 increases with the increase of the particles inside the concave arc groove 43 and the slag conveying hole 24, then the weighing block 42 exerts pressure on the symmetrical weighing spring 47, then the weighing spring 47 is elastically compressed, and the elastic potential energy increases, then the weighing block 42 moves downward with the insulated touch rod 48, then the insulated touch rod 48 moves downward with the conductive circular ring 492 through the annular embedded groove 491, then the sharp cone surface at the bottom end of the insulated touch rod 48 contacts and exerts pressure on the chamfered surface at the end of the conductive long strip 498, then the conductive long strip 498 moves into the interior of the buffer cavity 494, then the conductive long strip 498 pulls away the insulated piston 497 from the limiting stop ring 495, then the insulated piston 497 pulls the elastic tensile cord 496, then the elastic tensile cord 496 is elastically stretched, and the elastic potential energy increases, then the end of the conductive long strip 498 slides onto the surface of the insulated touch rod 48, then the end of the conductive long strip 498 slides onto the surface of the conductive circular ring 492, at this time, enough particles are collected inside the corresponding slag conveying hole 24, the bottom end of the insulated touch rod 48 contacts the bottom surface of the socket cavity 499, the inner wall of the concave arc groove 43 is flush with the inner wall of the arc-shaped closed air hole 32, then the intelligent controller 87, the two conductive long strips 498 and the conductive circular ring 492 form an electric circuit, then the conductive circular ring 492 has an electric current passing through, then the intelligent controller 87 detects the electric current, then the intelligent controller 87 controls the output shaft of the power motor 82 to rotate clockwise for one circle and then stops it, then the power motor 82 rotates clockwise for one circle with the toggle swing arm 83, in this process, the toggle swing arm 83 first contacts the toggle vertical rod 86 and exerts a clockwise pushing force on it, then the toggle vertical rod 86 rotates the reciprocating upper disc 92 in the clockwise direction through the guide sliding hole 93, at the same time, the toggle vertical rod 86 moves along the gradually diverging centripetal track groove 84 in the clockwise direction with the guide rail block 85, then the gradually diverging centripetal track groove 84 gradually moves away from the center of the reciprocating upper disc 92 with the guide rail block 85 through the toggle vertical rod 86, so that the engagement length of the toggle swing arm 83 and the toggle vertical rod 86 gradually shortens, then the reciprocating upper disc 92 rotates clockwise with the reciprocating movable piece 94, then the reciprocating movable piece 94 rotates clockwise with the end cap 96 through the circular arc-shaped rod 95 and squeezes the return spring 97, so that the return spring 97 is elastically compressed, and the elastic potential energy increases, then the reciprocating upper disc 92 rotates clockwise with the reciprocating lower disc 99 through the reciprocating shaft 91, then the reciprocating lower disc 99 rotates clockwise with the toggle mechanism 6 and the isosceles slope block 910, then one slope of the isosceles slope block 910 contacts the end of the intercepting rod 508 and exerts a pushing force on it, then the intercepting rod 508 moves to the left and pulls the intercepting lead 506, then the intercepting lead 506 bends and pulls the intercepting piston 504,then the intercepting piston 504 moves upward with the intercepting stub 505, then the intercepting stub 505 separates from the sealing disc 25, then the counterweight strip 65 contacts the corresponding sealing disc 25 and exerts a clockwise pushing force on it, then the slag conveying structure 2 rotates clockwise, then the slag conveying structure 2 rotates synchronously with the particles inside it, then the end of the intercepting rod 508 slides onto the other slope of the isosceles slope block 910 and slides along the slope to the side of the reciprocating lower disc 99, in the process, the sealing disc 25 previously blocked by the intercepting stub 505 passes the intercepting stub 505, then the intercepting piston 504 moves downward with the intercepting stub 505 under the action of the elastic force of the intercepting spring 503 and resets the intercepting stub 505, so that the intercepting stub 505 can block the next sealing disc 25 in the counterclockwise direction, at the same time, the downward movement of the intercepting piston 504 pulls the intercepting lead 506, causing the intercepting lead 506 to straighten, then the intercepting lead 506 exerts a rightward pushing force on the intercepting rod 508, then the intercepting rod 508 inserts the limiting disc 510 into the fixed groove 509, so that the intercepting rod 508 resets, then the dial mechanism 6 continues to rotate the slag conveying structure 2 clockwise, then the corresponding sealing disc 25 contacts the slope of the slope plate 75 and exerts an upward lifting force on it, then the slope plate 75 moves upward, then the sealing disc 25 passes the slope plate 75, then the pressure piston 74 moves downward with the slope plate 75 under the action of the elastic force of the pressure spring 73, then the slope plate 75 clamps the slag conveying structure 2 through the sealing disc 25, so that the slag conveying structure 2 cannot rotate counterclockwise, at the same time, the intercepting stub 505 contacts the corresponding sealing disc 25, so that the slag conveying structure 2 cannot continue to rotate clockwise, at this time, the empty slag conveying hole 24 adjacent to the slag conveying hole 24 filled with particles in the counterclockwise direction is aligned with the slag falling pipe 15 and the weighing recess 41, then the weighing block 42 moves upward with the weighing slide rod 45, the limiting disc 46, the insulating sensitive rod 48 and the conductive circular ring 492 under the action of the elastic force of the weighing spring 47, until the limiting disc 46 contacts the bottom surface of the arc-shaped air closing strip 31, at this time, the insulating sensitive rod 48, the conductive circular ring 492 and the conductive long strip 498 are separated, the insulating piston 497 resets the conductive long strip 498 under the action of the elastic force of the elastic stretching rope 496, then the end of the dial swing arm 83 separates from the dial vertical rod 86, then the reciprocating flake 94 reversely rotates with the reciprocating upper disc 92 under the action of the elastic force of the reset spring 97, then the reciprocating upper disc 92 reversely slides inside the gradually diverging centrifugal track groove 84 with the guide rail block 85 through the guide sliding hole 93 and the dial vertical rod 86, at the same time, the reciprocating upper disc 92 reversely rotates with the isosceles slope block 910, the dial mechanism 6 through the reciprocating shaft 91 and the reciprocating lower disc 99, then the isosceles slope block 910 makes the intercepting stub 505 move up and down once, then the counterweight strip 65 contacts the corresponding sealing disc 25, then the sealing disc 25 exerts a pushing force on the counterweight strip 65, then the counterweight strip 65 turns clockwise with the flip arm 64 around the flip lever 63, then the counterweight strip 65 passes the corresponding sealing disc 25,Then the turnover arm 64 swings down under the action of its own gravity, the gravity of the counterweight strip 65, the magnetic attraction between the movable magnetic strip 66 and the fixed magnetic strip 67, until the turnover arm 64 contacts the inner wall of the poking groove 62, at which time the movable magnetic strip 66 and the fixed magnetic strip 67 are magnetically attracted together, then the poking mechanism 6 resets, at which time the guide rail block 85 reversely rotates to the dead point position inside the gradually diverging centrifugal rail groove 84, after which the above-mentioned action is repeated, then the slag conveying structure 2 moves out of the inside of the arc-shaped closed gas hole 32 with the particulate matter, then the particulate matter falls into the inside of the slag discharging cylinder 12 under the action of gravity and is discharged along the gathering pipe 13 and the slag discharging pipe 14, that is,.

[0052] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this; any person skilled in the art can make equivalent replacement or change according to the technical scheme and the improved concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A slag discharge device for a coal mill, comprising a slag discharge mechanism (1), characterized in that: The slag discharge mechanism (1) includes a slag discharge rod (11), the top end of which is fixedly connected to the bottom surface of the coal mill, the bottom end of which is fixedly connected to a slag discharge cylinder (12), the bottom end of which is fixedly connected to a gathering pipe (13), the bottom end of which is fixedly connected to a slag discharge pipe (14), and the top surface of the slag discharge cylinder (12) is fixedly connected to two slag falling pipes (15), the top end of which is connected to the primary air chamber at the bottom of the coal mill. It also includes a slag conveying structure (2), which includes a slag conveying ring (21). The slag conveying ring (21) is located inside the slag discharge cylinder (12). Multiple sealing ring grooves (22) are opened on the outside of the slag conveying ring (21). The multiple sealing ring grooves (22) are evenly distributed on the outside of the slag conveying ring (21). A sealing ring (23) is embedded inside the sealing ring groove (22). A slag conveying hole (24) is opened on the surface of the slag conveying ring (21) between two adjacent sealing ring grooves (22). A sealing disc (25) is formed between two adjacent slag conveying holes (24). It also includes an air-tight structure (3), which includes an arc-shaped air-tight strip (31). The arc-shaped air-tight strip (31) is fixedly connected to the inner wall of the slag discharge cylinder (12). There are two arc-shaped air-tight strips (31), which are symmetrically distributed inside the slag discharge cylinder (12). The arc-shaped air-tight strip (31) has an arc-shaped air-tight hole (32) inside. The end face of the arc-shaped air-tight strip (31) has a gradually expanding opening (33), which communicates with the arc-shaped air-tight hole (32). The slag conveying ring (21) is slidably inserted into the inside of the arc-shaped air-tight hole (32). The maximum diameter of the gradually expanding opening (33) is greater than the diameter of the slag conveying ring (21). The sealing ring (23) and the sealing disc (25) are slidably inserted into the inside of the arc-shaped air-tight hole (32). The bottom end of the slag discharge pipe (15) is fixedly inserted into the top surface of the arc-shaped air-tight strip (31) and communicates with the arc-shaped air-tight hole (32) and is adapted to the slag conveying hole (24). The slag conveying structure (2) carries the particles out from the inside of the arc-shaped air-tight hole (32). It also includes a weighing mechanism (4), an interception structure (5) and a toggle mechanism (6). The weighing mechanism (4) includes a weighing groove (41) and a protective shell (44). A critical controller (49) is fixedly connected to the bottom surface of the inner cavity of the protective shell (44). The empty slag conveying hole (24) containing particles is aligned with the slag discharge pipe (15) and the weighing groove (41) in the counterclockwise direction. It also includes a paddle power mechanism (8), which includes a power disc box (81) and an intelligent controller (87). The bottom end of the power disc box (81) is fixedly connected to the top surface of the slag discharge cylinder (12) and located at its center. A power motor (82) is fixedly installed on the top surface of the power disc box (81). The bottom end of the output shaft of the power motor (82) extends into the interior of the power disc box (81) and is fixedly sleeved with a paddle swing arm (83). Gradual centrifugal track grooves (84) are opened on both the upper and lower surfaces of the inner cavity of the power disc box (81). A guide track block (85) is slidably inserted into the interior of the gradual centrifugal track groove (84). A paddle vertical rod (86) is fixedly connected between the two guide track blocks (85). The paddle vertical rod (86) is vertical. The intelligent controller (87) is fixedly installed on the top surface of the slag discharge cylinder (12). It also includes a reciprocating mechanism (9), which includes a reciprocating shaft (91), which is movably inserted into the bottom surface of the power disk box (81). The top end of the reciprocating shaft (91) extends into the interior of the power disk box (81) and is fixedly connected to a reciprocating upper plate (92). A guide sliding hole (93) is provided on the reciprocating upper plate (92). A vertical rod (86) is slidably inserted into the interior of the guide sliding hole (93). A reciprocating movable plate (94) is fixedly connected to the side of the reciprocating upper plate (92). The other end of the reciprocating movable plate (94) is slidably connected to the inner wall of the power disk box (81). An arc-shaped rod (95) is fixedly connected to the surface of the reciprocating movable plate (94). An end cap (96) is fixedly connected to the other end of the arc-shaped rod (95). A return spring is movably sleeved on the outside of the arc-shaped rod (95). 97) and reciprocating fixed plate (98), reciprocating movable plate (94) is connected to reciprocating fixed plate (98) through return spring (97), the right end of reciprocating fixed plate (98) is fixedly connected to the inner wall of power disk box (81), the left end of reciprocating fixed plate (98) is slidably connected to the side of reciprocating upper plate (92), the bottom end of reciprocating shaft (91) extends to the inside of slag discharge cylinder (12) and is fixedly sleeved with reciprocating lower plate (99), one end of toggle bar (61) is fixedly connected to the side of reciprocating lower plate (99), and isosceles slope block (910) located in the clockwise direction of toggle bar (61) is fixedly connected to the side of reciprocating lower plate (99). Isosceles slope block (910) is adapted to intercepting bar (508), and steel ball at the end of intercepting bar (508) rolls on the side of reciprocating lower plate (99).

2. The slag discharge device for a coal mill according to claim 1, characterized in that: The weighing groove (41) is formed on the bottom surface of the inner cavity of the arc-shaped air-tight hole (32) and corresponds to the bottom end of the slag discharge pipe (15). A weighing block (42) is movably inserted into the weighing groove (41). The top end of the weighing block (42) extends into the interior of the corresponding slag discharge hole (24). A recessed arc groove (43) is formed on the top surface of the weighing block (42). The recessed arc groove (43) is adapted to the inner wall of the arc-shaped air-tight hole (32). The protective shell (44) is fixedly connected to the bottom surface of the arc-shaped air-tight strip (31). A weighing slide rod (45) is fixedly connected to the bottom surface of the weighing block (42). The bottom end of the weighing slide rod (45) extends into the protective shell (44). The weighing block (42) is internally and fixedly connected to a limit stop plate (46). The weighing slide (45) is movably inserted into the inside of the arc-shaped air-sealing strip (31). The weighing slide (45) is externally sleeved with a weighing spring (47) located inside the weighing groove (41). The top of the weighing spring (47) is fixedly connected to the bottom surface of the weighing block (42). The bottom end of the weighing spring (47) is fixedly connected to the bottom surface of the inner cavity of the weighing groove (41). An insulating sensing rod (48) located in the middle is fixedly connected to the bottom surface of the weighing block (42). The bottom end of the insulating sensing rod (48) extends into the inside of the protective shell (44). The bottom end of the insulating sensing rod (48) is conical.

3. A slag discharge device for a coal mill according to claim 2, characterized in that: The critical controller (49) includes an annular insert groove (491) and an insulating seat (493). The annular insert groove (491) is formed on the outer surface of the insulating sensor rod (48). A conductive ring (492) is fixedly embedded inside the annular insert groove (491). The surface of the conductive ring (492) is flush with the surface of the insulating sensor rod (48). The bottom end of the insulating seat (493) is fixedly connected to the bottom surface of the inner cavity of the protective shell (44). The top end of the insulating seat (493) is fixedly connected to the bottom surface of the arc-shaped air-sealing strip (31). Two buffer cavities (494) are formed inside the insulating seat (493). The two buffer cavities (494) are symmetrically distributed on the left and right sides inside the insulating seat (493). Limiting rings (495) are fixedly connected to the inner wall of the buffer cavities (494). The inner cavity of the buffer cavities (494) is close to the insulating... An elastic tension rope (496) is fixedly connected to the inner wall of the central shaft of the seat (493). The other end of the elastic tension rope (496) passes through the limiting ring (495) and is fixedly connected to an insulating piston (497). The insulating piston (497) is in contact with the limiting ring (495). A conductive strip (498) is fixedly inserted into the insulating piston (497). One end of the conductive strip (498) passes through the limiting ring (495) and has a chamfered bevel. A socket hole (499) located in the middle is opened on the top surface of the insulating seat (493). The bottom end of the insulating sensing rod (48) is movably inserted into the inside of the socket hole (499). The socket hole (499) is adapted to the insulating sensing rod (48). The end of the conductive strip (498) extends into the inside of the socket hole (499) and is adapted to the insulating sensing rod (48).

4. A slag discharge device for a coal mill according to claim 3, characterized in that: The interception structure (5) includes an interception cylinder (501). The top surface of the interception cylinder (501) is fixedly connected to the top surface of the inner cavity of the slag discharge cylinder (12). An interception baffle (502) located at the top of the interception cylinder (501) is fixedly connected to the inner wall of the interception cylinder (501). An interception piston (504) is connected to the bottom surface of the interception baffle (502) via an interception spring (503). The interception piston (504) is slidably inserted into the interior of the interception cylinder (501). An interception short pin (505) is fixedly connected to the bottom surface of the interception piston (504). The bottom end of the interception short pin (505) extends to the outside of the interception cylinder (501) and is adapted to the sealing disc (25). An interception lead wire (506) is fixedly connected to the top surface of the interception piston (504). The top end of the interception lead wire (506) passes through the interception spring (503) and the interception baffle (502) and is fixedly connected to the interception cylinder (504). On the top surface of the inner cavity of the intercepting cylinder (501), an intercepting column (507) is fixedly connected to the right side of the intercepting cylinder (501). The top surface of the intercepting column (507) is fixedly connected to the top surface of the inner cavity of the slag discharge cylinder (12). An intercepting rod (508) is slidably inserted into the inside of the intercepting column (507). The right end of the intercepting rod (508) extends out from the right end face of the intercepting column (507) and is movably embedded with a steel ball. The left end of the intercepting rod (508) passes through the intercepting cylinder (501) and is fixedly connected to a limiting disc (510). The intercepting rod (508) is located above the intercepting partition (502). A fixing groove (509) is opened on the left side of the intercepting cylinder (501). The limiting disc (510) is movably inserted into the inside of the fixing groove (509). The intercepting lead wire (506) is movably inserted into the inside of the intercepting rod (508).

5. A slag discharge device for a coal mill according to claim 4, characterized in that: The actuating mechanism (6) includes an actuating bar (61), which is located inside the slag discharge cylinder (12) and above the slag conveying structure (2). The actuating bar (61) is located in the counterclockwise direction of the intercepting cylinder (501). An actuating groove (62) is provided on the surface of the actuating bar (61) at its right end. A flipping rod (63) is movably sleeved on the inner wall of the actuating groove (62). A flipping arm (64) is fixedly sleeved on the outside of the flipping rod (63). The flipping arm (64) is movably inserted into the inside of the actuating groove (62). A counterweight bar (65) is fixedly connected to the bottom end of the flipping arm (64). The counterweight bar (65) is adapted to the sealing disc (25). A movable magnetic strip (66) is fixedly inserted on the flipping arm (64). A fixed magnetic strip (67) is fixedly inserted on the inner wall of the actuating groove (62). The fixed magnetic strip (67) and the movable magnetic strip (66) are magnetically attracted to each other.

6. A slag discharge device for a coal mill according to claim 5, characterized in that: It also includes a one-way limiting mechanism (7), which includes an arc-shaped flat tube (71). The arc-shaped flat tube (71) is fixedly connected to the top surface of the inner cavity of the slag discharge cylinder (12) and is located in the counterclockwise direction of the actuating bar (61). A shaping rod (72) is fixedly connected between the upper and lower surfaces of the inner cavity of the arc-shaped flat tube (71). A pressure spring (73) and a pressure piston (74) are movably sleeved on the outside of the shaping rod (72). The pressure piston (74) is connected to the top surface of the inner cavity of the arc-shaped flat tube (71) through the pressure spring (73). An inclined plate (75) is fixedly connected to the bottom surface of the pressure piston (74). The bottom end of the inclined plate (75) extends to the outside of the arc-shaped flat tube (71). The inclined plate (75) is adapted to the sealing disc (25).

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