Automatic locking full-sealing deslagging device of coal mill and automatic deslagging system of coal mill

Abstract

The invention discloses an automatic locking full-sealing slag discharging device of a coal mill and an automatic slag discharging system of the coal mill, an automatic jacking and locking mechanism is designed and mounted on a rack, automatic jacking, automatic locking, automatic unlocking and automatic descending of a slag box can be achieved, the whole operation process is stable, standard and reliable, the slag box is tightly sealed, and the slag box is not prone to falling. The problems that in the prior art, unlocking and locking of the slag box depend on manual multi-step operation, working efficiency is low, sealing failure of the slag box is prone to being caused by non-standard manual operation, and the service life of a slag box locking device is shortened can be solved. In addition, the automatic jacking and locking mechanism is installed on the rack through a base, lifting of the supporting arm assembly can be always based on a rack panel, the phenomenon that a slag discharging system is not sealed tightly and the phenomenon that flying dust flies in the slag discharging process due to the fact that the ground is uneven and the hydraulic jacking slag box deflects are fundamentally eradicated, and the automatic jacking and locking mechanism has the advantages of protecting the working environment, prolonging the service life of equipment and improving the working efficiency. And the maintenance cost is saved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention belongs to the field of thermal power generation, and relates to a fully sealed discharge technology for pebble coal of a coal mill, and in particular to an automatic locking fully sealed slag discharge device for a coal mill and an automatic slag discharge system for a coal mill. Background Art

[0002] During the coal pulverizing operation of the power plant coal mill, there are always some granular materials that are difficult to grind. These granular materials are called "pebble coal". Pebble coal often needs to be transported from the plant building at the coal pulverizer site to the outdoor ash dump. In the process of collecting pebble coal in the slag box and transporting the slag box full of pebble coal, a large amount of dust will inevitably leak, seriously polluting the plant environment, which will not only reduce the safety and service life of the equipment, but also endanger the personal health of the workers in the plant. Therefore, it is very important to promote the use of fully sealed discharge technology for pebble coal.

[0003] The inventor knows a top-up fully sealed slag discharge system applied to coal mill. When the slag box is full, the slag box locking device is unlocked by manually turning counterclockwise. When the empty slag box returns, the hydraulic trolley lifts the slag box and the slag box locking device is locked by manually turning clockwise. It can be seen that:

[0004] (1) The lifting of the slag box in this system depends on a hydraulic trolley. However, the ground of some power plants is uneven. When the hydraulic trolley lifts the slag box, the sealing surface of the slag box and the sealing surface of the coal mill frame will be in contact at an angle, that is, there is a gap between the sealing surfaces of the slag box and the coal mill frame. The seal is not tight, and a large amount of dust will still leak during the slag discharge process.

[0005] (2) The unlocking and locking of the slag box in this system relies on manual operation and needs to be completed in multiple steps. Not only is the work efficiency low, but the uncertainty and non-standardization of manual operation can easily lead to inconsistent sealing surfaces on both sides of the slag box. Or brute force disassembly by manual knocking will lead to poor sealing effect between the slag box and the sealing surface of the coal mill frame. Brute force disassembly may even cause damage to the slag box locking device, reducing the service life of the slag box locking device.

[0006] Therefore, the present invention proposes a new type of fully sealed slag discharge system for a coal mill to overcome the problems of the above-mentioned top-type fully sealed slag discharge system, such as cumbersome operation steps, low work efficiency, unreliable sealing effect, and the hydraulic trolley lifting the slag box, which may easily lead to poor sealing of the slag box. Summary of the invention

[0007] The purpose of the present invention is to provide an automatic locking fully sealed slag discharge device and an automatic slag discharge system for a coal mill, so as to solve the problems existing in the top-type fully sealed slag discharge system in the background technology, such as cumbersome operation steps, low work efficiency, unreliable sealing effect, and the hydraulic trolley lifting the slag box, which may lead to poor sealing of the slag box.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides a coal mill automatic locking fully sealed slag discharge device, comprising:

[0010] A frame, on which a discharge port is arranged, and a slag box accommodating space is arranged below the discharge port;

[0011] A discharge guide mechanism is arranged on the frame and is sealed with the discharge port, and is used to convey the material discharged from the coal mill slag discharge port to the discharge port;

[0012] The automatic lifting and locking mechanism comprises a base, a lifting assembly, a driving assembly and a supporting arm assembly, wherein the base is mounted on the frame, the lifting assembly comprises a lifting seat and a connecting rod mechanism, the connecting rod mechanism comprises a connecting rod 1 and a connecting rod 2, the first end of the connecting rod 1 is rotatably connected to the base, the second end of the connecting rod 1 is rotatably connected to the first end of the connecting rod 2, the lifting seat is movably matched with the base and is located above the connecting rod mechanism, and the second end of the connecting rod 1 is in contact with the lifting seat; the driving assembly is arranged on the base, and the driving assembly is rotatably connected to the second end of the connecting rod 2 for driving The second end of the connecting rod 2 moves to make the connecting rod 1 swing and switch between the first state and the second state, wherein in the first state, the second end of the connecting rod 1 is in the lowest position, and the lifting seat is lowered to the lowest position, and in the second state, the connecting rod 1 is perpendicular to the lifting seat and self-locked, the second end of the connecting rod 1 is in the highest position, and the lifting seat is raised to the highest position; the support arm assembly is arranged on the lifting seat, and the support arm assembly can be raised and lowered synchronously with the lifting seat, so that the slag box in the slag box accommodating space is raised and sealed and docked with the discharge port, or lowered and separated from the discharge port.

[0013] In some embodiments, the rack includes a rack panel and a rack leg, wherein:

[0014] The frame panel is arranged on the top of the frame legs, and the frame legs are arranged on both the left and right sides of the frame panel; the slag box accommodating space is located below the frame panel;

[0015] The frame panel is provided with the discharge port, and the outer periphery of the bottom of the discharge port is provided with a first sealing strip for contacting and sealing with the sealing surface of the slag box;

[0016] A front limit block and a rear limit block are respectively arranged on the front and rear sides of the frame panel, and the front limit block and the rear limit block are respectively used for positioning the slag box frontally and rearwardly.

[0017] In some embodiments, the base is disposed below the rack panel, the support arm assembly is disposed at the top of the automatic lifting and locking mechanism, and in the first state and the second state, the support arm assembly is not higher than the upper surface of the rack panel.

[0018] In some embodiments, the base is fixed on the rack legs, and the automatic lifting and locking mechanisms are provided on both left and right sides of the rack panel.

[0019] In some embodiments, the driving component is a cylinder, a hydraulic cylinder or an electric slide; the driving component is used to drive the second end of the connecting rod 2 to rise and fall.

[0020] In some embodiments, the automatic lifting and locking mechanism further includes a safety component, and the safety component includes:

[0021] A guide rod is arranged on one of the driving assembly and the lifting seat, and the guide rod is parallel to the lifting direction of the driving assembly, and a positioning structure 1 is arranged on the guide rod;

[0022] A locking member is arranged on the other of the driving assembly and the lifting seat, the locking member is provided with a guide rod hole for the guide rod to movably pass through, and a positioning structure 2 adapted to the positioning structure 1 is arranged on the hole wall of the guide rod hole;

[0023] In the first state, the first positioning structure and the second positioning structure are separated from each other, and in the second state, the first positioning structure and the second positioning structure are positioned and locked.

[0024] In some embodiments, one of the positioning structure 1 and the positioning structure 2 is a curved surface positioning block, the curved surface positioning block is telescopically embedded in the rod wall of the guide rod or the hole wall of the guide rod hole, and the curved surface positioning block is connected to the guide rod or the locking member through an elastic member;

[0025] The other of the first positioning structure and the second positioning structure is an arc surface positioning groove adapted to the arc surface positioning block.

[0026] In some embodiments, two groups of the connecting rod mechanisms are provided below the lifting seat of the automatic lifting and locking mechanism, and the two groups of the connecting rod mechanisms are arranged symmetrically, and the connecting rods 2 of the two groups of the connecting rod mechanisms are connected to the same driving assembly.

[0027] In some embodiments, the lifting assembly also includes a pressure head, which includes a pin shaft and a sleeve rotatably installed on the outside of the pin shaft, and the pin shaft is arranged at the second end portion of the connecting rod one, and the second end portion of the connecting rod one is in rolling contact with the lifting seat through the sleeve.

[0028] In some embodiments, the lifting assembly further includes a positioning guide mechanism, and the positioning guide mechanism includes:

[0029] A horizontal guide groove is provided on the side wall of the lifting seat;

[0030] A guide protrusion is arranged at the second end portion of the connecting rod 1, and the guide protrusion is slidably embedded in the horizontal guide groove. When the connecting rod 1 swings and switches between the first state and the second state, the guide protrusion can slide along the horizontal guide groove to drive the lifting seat to rise and fall synchronously.

[0031] In some embodiments, the base includes a beam seat and a pair of vertical arms arranged symmetrically front and back, the beam seat is connected between the bottoms of the two vertical arms, the driving assembly is arranged on the beam seat, the connecting rod mechanism, the lifting seat and the support arm assembly are all arranged above the beam seat, and the first end of the connecting rod is rotatably connected to the beam seat, and the two ends of at least one of the lifting seat and the support arm assembly are respectively matched with the sliding guides of the two vertical arms.

[0032] In some embodiments, a slide groove is formed on the inner side of the two vertical arms; and both ends of the support arm assembly are movably embedded in the slide grooves of the two vertical arms.

[0033] In some embodiments, the support arm assembly includes:

[0034] The support arm frame is located above the jacking seat, and rollers are respectively arranged at both ends of the support arm frame, and the rollers at both ends of the support arm frame are respectively rollingly installed in the slide grooves of the two vertical arms;

[0035] The support arm body is arranged on one side of the support arm frame and faces the slag box accommodating space.

[0036] In some embodiments, the discharge diversion mechanism includes a discharge pipe and a wear-resistant ceramic valve arranged on the discharge pipe, one end of the discharge pipe is used to be sealed and connected to the slag discharge port of the coal mill, and the other end of the discharge pipe is sealed and connected to the discharge port.

[0037] The present invention proposes an automatic slag discharge system for a coal mill, comprising a control cabinet and an automatic locking fully sealed slag discharge device for a coal mill as described in any one of the above items, wherein the control cabinet is communicatively connected with the discharge guide mechanism and the drive assembly.

[0038] In some implementation modes, the coal mill automatic slag discharge system further comprises:

[0039] An automatic pressure relief device is provided on the frame and located at the discharge port, and is used to relieve pressure inside the slag box;

[0040] A spray device is provided on the frame and located at the discharge port, and is used for spraying and cooling the interior of the slag box;

[0041] A material level meter is arranged on the frame through a lifting mechanism, and a material level meter opening for the material level meter to pass through is opened on the frame, and the lifting mechanism is used to drive the material level meter to insert into or detach from the slag box through the material level meter opening, and the material level meter is used to detect whether the material level inside the slag box reaches a preset position;

[0042] The automatic pressure relief device, the spray device, the material level meter and the lifting mechanism are all connected to the control cabinet for communication, and the control cabinet is at least used for:

[0043] Control the lifting mechanism to drive the material level meter to rise and fall;

[0044] When the material level meter detects that the material level in the slag box reaches a preset position, the automatic pressure relief device is controlled to release pressure and the valve in the discharge diversion mechanism is closed, and the automatic lifting and locking mechanism is controlled to automatically switch the connecting rod 1 from the second state to the first state, so as to drive the slag box to descend and move away from the discharge port through the automatic lifting and locking mechanism;

[0045] When the temperature of the material in the slag box reaches the self-ignition temperature, the spraying device is controlled to spray water into the slag box to cool it down, so as to prevent the material from self-igniting.

[0046] In some embodiments, the coal mill automatic slag discharge system further includes a hydraulic trolley, and the hydraulic trolley is used to transfer the slag box to the slag box accommodating space, or move the slag box out of the slag box accommodating space.

[0047] In some implementations, the coal mill automatic slag discharge system also includes the slag box.

[0048] Compared with the prior art, the present invention has achieved the following technical effects:

[0049] The automatic locking and fully sealed slag discharge device for coal mill disclosed in the present invention can realize automatic lifting, automatic locking, automatic unlocking and automatic lowering of the slag box by installing an automatic lifting and locking mechanism on the frame, based on the structural design of the connecting rod mechanism in the lifting assembly of the automatic lifting and locking mechanism and the lifting seat, and only by relying on the driving action of the driving assembly, the slag box can be automatically lifted, locked, unlocked and lowered. The whole operation process is stable, standardized and reliable, and the slag box is tightly sealed, which can solve the problems that the slag box unlocking and locking in the prior art rely on manual multi-step operations, which not only has low work efficiency, but also the non-standard manual operation easily leads to the failure of the slag box sealing and the reduction of the service life of the slag box locking device. In addition, the automatic lifting and locking mechanism is installed on the frame through the base, and the lifting of the support arm assembly can always be based on the frame panel, which fundamentally eliminates the phenomenon of loose sealing of the slag discharge system caused by the deflection of the hydraulic lifting slag box due to uneven ground and the phenomenon of dust flying during the slag discharge process, and has the advantages of protecting the working environment, extending the service life of the equipment, saving maintenance costs, and reducing the labor intensity of workers. The present invention solves the problems existing in the top-type fully sealed slag discharge system in the background technology, such as cumbersome operation steps, low work efficiency, unreliable sealing effect, and the hydraulic trolley lifting the slag box, which may lead to poor sealing of the slag box.

[0050] In some technical solutions disclosed in the present invention, the automatic lifting and locking mechanism is installed below the frame panel, and the support arm assembly is arranged at the top of the automatic lifting and locking mechanism, and in the first state and the second state, the support arm assembly is not higher than the upper surface of the frame panel, which can avoid the automatic lifting and locking mechanism from occupying the space above the frame panel, and the automatic lifting and locking mechanism has no possibility of any interference with the slag discharge pipe, thereby avoiding the situation where the slag discharge pipe and the slag box locking device must be arranged on the same side of the frame panel due to space limitations in the use occasion. The present invention can maximize the use of the automatic lifting and locking mechanism, making the coal mill top-mounted fully sealed slag discharge equipment suitable for any on-site layout.

[0051] In some technical solutions disclosed in the present invention, the entire automatic lifting and locking mechanism is installed vertically and is mostly embedded between the legs on the side of the frame, avoiding the problem of inclined installation of traditional lifting and locking devices and occupying too much peripheral space of the coal mill frame.

[0052] The automatic slag discharge system for coal mill disclosed in the present invention realizes the fully enclosed discharge of stone coal from the coal mill slag discharge port to the slag box due to the adoption of the above-mentioned coal mill automatic locking fully sealed slag discharge device. The entire slag discharge process is carried out in a completely enclosed environment, which fundamentally eliminates the phenomenon of air leakage and dust flying during the slag discharge process caused by the poor sealing of the on-site slag discharge system. It has the advantages of tight sealing, clean working environment, extended equipment service life, saved maintenance costs, and reduced labor intensity of workers. Moreover, the entire slag discharge process is automatically operated, with a high degree of automation, and greatly improved reliability and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of a coal mill automatic locking fully sealed slag discharge device with a discharge and flow guiding mechanism disposed after the discharge in one or more embodiments;

[0055] Figure 2 for Figure 1 A schematic diagram of the main view;

[0056] Figure 3 for Figure 1 Schematic diagram of the left side;

[0057] Figure 4 A schematic diagram of an automatic locking and fully sealed slag discharge device for a coal mill with a horizontally placed discharge guide mechanism in one or more embodiments;

[0058] Figure 5 for Figure 4 A schematic diagram of the main view;

[0059] Figure 6 for Figure 4 Schematic diagram of the left side;

[0060] Figure 7 A schematic diagram of a rack structure shown in one or more embodiments;

[0061] Figure 8 It is a first-view overall schematic diagram of the automatic lifting and locking mechanism presented in one or more embodiments;

[0062] Fig. 9 A second perspective overall schematic diagram of the automatic lifting and locking mechanism in one or more embodiments;

[0063] Fig.10 A side view of an automatic lifting and locking mechanism in one or more embodiments;

[0064] Fig.11 A front view of an automatic lifting and locking mechanism shown in one or more embodiments;

[0065] Fig.12 A schematic diagram of the state of the connecting rod mechanism and the safety component in the first state shown in one or more embodiments;

[0066] Fig.13A schematic diagram of the state of the connecting rod mechanism and the safety component in the second state shown in one or more embodiments;

[0067] Fig.14 A partial cross-sectional schematic diagram of the automatic lifting and locking mechanism in the second state shown in one or more embodiments;

[0068] Fig.15 is an overall schematic diagram of a jacking assembly shown in one or more embodiments;

[0069] Fig.16 A schematic diagram of an automatic slag discharge system for a coal mill with a discharge and flow guiding mechanism disposed after the discharge in one or more embodiments;

[0070] Fig.17 It is a schematic diagram of an automatic slag discharge system for a coal mill with a horizontally placed discharge guide mechanism in one or more embodiments.

[0071] In the figure, the reference numerals are:

[0072] 100. Automatic locking and fully sealed slag discharge device for coal mill; 200. Automatic slag discharge system for coal mill; 300. Control cabinet; 400. Slag box; 500. Slag discharge port for coal mill;

[0073] 1. Frame; 11. Discharge port; 12. Frame panel; 13. First frame leg; 14. Second frame leg; 15. Front stop block; 16. Rear stop block; 17. First sealing strip; 18. Material level meter port; 19. Slag box accommodating space;

[0074] 2. Discharge guide mechanism; 21. Discharge pipeline; 22. Feed hopper; 221. Hopper partition; 23. One ceramic wear-resistant plug valve; 24. Two pneumatic wear-resistant ceramic rotary slag discharge valves;

[0075] 3. Automatic lifting and locking mechanism; 31. Base; 311. Beam seat; 312. Vertical arm; 3121. Slide; 313. Connecting rod seat; 314. Fixing plate; 315. Reinforced beam; 32. Lifting assembly; 321. Lifting seat; 322. Connecting rod mechanism; 3221. Connecting rod 1; 3222. Connecting rod 2; 323. Press head; 3231. Pin shaft; 3232. Bushing; 324. Positioning guide mechanism; 3241. Horizontal guide groove; 3242, guide protrusion; 33, drive assembly; 331, cylinder connection seat; 34, support arm assembly; 341, support arm frame; 342, roller; 343, support arm body; 344, reinforcement cross bar; 35, insurance assembly; 351, guide rod; 3511, arc surface positioning groove; 352, locking piece; 3521, guide rod hole; 3522, arc surface positioning block; 3523, elastic piece; 3524, installation channel; 3525, pre-tightening top screw;

[0076] 4. Automatic pressure relief device;

[0077] 5. Spraying device;

[0078] 6. Material level meter; 61. Second sealing strip;

[0079] 7. Lifting mechanism; 71. Lifting cylinder; 72. Cylinder bracket. DETAILED DESCRIPTION

[0080] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0081] One of the purposes of the present invention is to provide an automatic locking and fully sealed slag discharge device for a coal mill to solve the problems of the top-type fully sealed slag discharge system in the background technology, which relies on manual unlocking and locking of the slag box, has cumbersome operation steps, low work efficiency, unreliable sealing effect, and the hydraulic trolley lifting the slag box, which easily leads to poor sealing of the slag box.

[0082] Another object of the present invention is to provide a coal mill automatic slag discharge system including the above-mentioned coal mill automatic locking fully sealed slag discharge device.

[0083] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0084] Example 1

[0085] like Figures 1 to 3 As shown, this embodiment provides a coal mill automatic locking fully sealed slag discharge device 100, including a frame 1, a discharge guide mechanism 2 and an automatic lifting and locking mechanism 3. The frame 1 is provided with a discharge port 11, and a slag box accommodating space 19 is provided below the discharge port 11. The discharge guide mechanism 2 is provided on the frame 1 and is sealed and connected to the discharge port 11. The discharge guide mechanism 2 is used to transport the material discharged from the coal mill slag discharge port 500 to the discharge port 11. Figure 8 to Figure 15As shown, the automatic lifting and locking mechanism 3 includes a base 31, a lifting assembly 32, a driving assembly 33 and an arm assembly 34, the base 31 is installed on the frame 1; the lifting assembly 32 includes a lifting seat 321 and a connecting rod mechanism 322, the connecting rod mechanism 322 includes a connecting rod 1 3221 and a connecting rod 2 3222, the first end of the connecting rod 1 3221 is rotatably connected to the base 31, the second end of the connecting rod 1 3221 is rotatably connected to the first end of the connecting rod 2 3222, the lifting seat 321 is movably matched with the base 31, and is located above the connecting rod mechanism 322, and the second end of the connecting rod 1 3221 is in contact with the lifting seat 321; the driving assembly 33 is arranged on the base 31, the driving assembly 33 is rotatably connected to the second end of the connecting rod 2 3222, and the driving assembly 33 is used to drive the second end of the connecting rod 2 3222 to move, so as to link the connecting rod 1 3221 by driving the connecting rod 2 3222 to move, thereby making the connecting rod 1 3221 move in conjunction with each other, so that The connecting rod 3221 swings and switches between a first state and a second state with its first end hinge point as the center, wherein, in the first state, the connecting rod 3221 is horizontal or slightly inclined relative to the horizontal plane (generally, the inclination angle relative to the horizontal plane is not greater than 15°), and the second end of the connecting rod 3221 is at the lowest position, and accordingly, the lifting seat 321 also drops to the lowest position along with the second end of the connecting rod 3221; in the second state, the connecting rod 3221 is perpendicular to the lifting seat 321 (i.e., perpendicular to the aforementioned horizontal plane) and self-locks, at which time the second end of the connecting rod 3221 is at the highest position, and accordingly, the lifting seat 321 is lifted to the highest position by the second end of the connecting rod 3221, and the driving assembly 33 drives the second end of the connecting rod 3222 to move back and forth, so that the connecting rod 3221 can be switched back and forth between the first state and the second state, thereby completing the reciprocating lifting and lowering of the lifting seat 321. The arm assembly 34 is arranged on the lifting seat 321, and the arm assembly 34 can be raised and lowered synchronously with the lifting seat 321 to lift the slag box 400 in the slag box accommodating space 19 so that the slag box 400 is sealed and docked with the discharge port 11, or to lower the slag box 400 in the slag box accommodating space 19 so that the slag box 400 is separated from the discharge port 11. The above-mentioned automatic locking fully sealed slag discharge device 100 for coal mill can realize automatic lifting, automatic locking, automatic unlocking and automatic lowering of the slag box 400 by the structural design of the connecting rod mechanism 322 in the lifting assembly 32 of the automatic lifting and locking mechanism 3 and the lifting seat 321, and only by the driving action of the driving assembly 33, the whole operation process is stable, standardized and reliable, and the slag box 400 is tightly sealed, which can solve the problems that the unlocking and locking of the slag box in the prior art rely on manual multi-step operations, which not only has low work efficiency, but also the non-standard manual operation easily leads to the failure of the slag box seal and the reduction of the service life of the slag box locking device.In addition, the automatic lifting and locking mechanism 3 is installed on the frame 1 through the base 31, and the lifting of the arm assembly 34 can always be based on the frame panel 12, which fundamentally eliminates the problem of loose sealing of the slag discharge system caused by the deflection of the hydraulic jacking slag box due to uneven ground and the phenomenon of dust flying during the slag discharge process. It has the advantages of protecting the working environment, extending the service life of equipment, saving maintenance costs, and reducing the labor intensity of workers.

[0086] In a feasible implementation, Figure 1 to Figure 3 and Figure 7 As shown, the frame 1 includes a frame panel 12 and frame legs. The frame panel 12 is provided with a discharge port 11, and the bottom of the discharge port 11 is provided with a first sealing strip 17 for contacting and sealing with the sealing surface of the slag box 400. The left and right sides of the frame panel 12 are provided with frame legs; the front and rear sides of the frame panel 12 are respectively provided with a front limit block 15 and a rear limit block 16, which are respectively used to position the slag box 400 forward and backward, to ensure that the slag box 400 is positioned more accurately when it is lifted, and to ensure the sealing effect. Figure 1 to Figure 3 As shown, the frame legs include a first frame leg 13 and a second frame leg 14, and the second frame leg 14 and the first frame leg 13 are sequentially hung on one side of the frame panel 12 from front to back, and the tops of the first frame leg 13 and the second frame leg 14 are connected to the upper surface of the frame panel 12; the frame legs on the left and right sides of the frame panel 12 are symmetrically installed to form a frame 1 with four legs. As a preferred solution, the four frame legs of the frame 1 are respectively located at the four corners of the frame panel 12, and the slag box accommodating space 19 is located below the frame panel 12 and between the four frame legs.

[0087] In some embodiments, the first sealing strip 17 is preferably a temperature-resistant fluororubber sealing strip, which is embedded and installed on the lower surface of the frame panel 12 and is located at the outer periphery of the discharge port 11. This installation method does not require bolts or the like for fixing, and is convenient for disassembly, installation, and replacement. The first sealing strip 17 and the sealing surface of the slag box 400 fit each other, which can play a role in sealing the slag box 400, without air leakage or ash leakage, and the sealing effect is good.

[0088] Considering that in conventional hydraulic top-mounted fully sealed slag discharge equipment, the slag box locking device is located above the short sides of the coal mill frame panel, which will occupy the upper space of the panel, so that the slag discharge pipe is fixed in the limited range of the long side of the frame panel during design and installation, and cannot adapt to the compact discharge port space of some power plants, such as Figure 1 to Figure 3 , Figure 8 and Fig. 9As shown, in some feasible implementation modes, the base 31 can be arranged below the rack panel 12, specifically: the base 31 can be connected and fixed on the rack legs, and can also be connected and fixed on the lower surface of the rack panel 12; at the same time, the support arm assembly 34 is arranged at the top of the automatic jacking and locking mechanism 3, and in the first state and the second state, the support arm assembly 34 is not higher than the upper surface of the rack panel 12, thereby avoiding the automatic jacking and locking mechanism 3 from occupying the space above the rack panel 12, and can expand the setting range of the slag discharge pipe, so that the slag discharge pipe can flexibly adapt to the compact discharge port space of some power plants.

[0089] In some feasible implementation manners, it is preferred that both left and right sides of the rack panel 12 are provided with automatic lifting and locking mechanisms 3. Moreover, the automatic lifting and locking mechanisms 3 on each side are fixed between the two rack legs on the same side through the base 31.

[0090] In a feasible implementation manner, the driving component 33 preferably adopts a telescopic driving component, which may adopt a telescopic driving component including but not limited to a linear telescopic component such as a cylinder, a hydraulic cylinder or an electric slide. Based on this, the driving component 33 is mainly used to drive the second end of the connecting rod 2 3222 to rise and fall, so that the connecting rod 1 3221 swings and switches between the first state and the second state.

[0091] Taking the driving component 33 as an example, the automatic lifting and locking mechanism 3 as a whole is a pneumatic lifting and locking device for the slag box. The cylinder is arranged at the bottom of the base 31, the piston rod of the cylinder is vertically upward, and the end of the piston rod of the cylinder is fixedly installed with a cylinder connecting seat 331 by means including but not limited to bolt fixing, key connection, mortise and tenon joint, etc. The second end of the connecting rod 2 3222 in the aforementioned connecting rod mechanism 322 is rotatably connected to the cylinder connecting seat 331 through a pin shaft to form a rotating pair.

[0092] In a feasible implementation, multiple groups of connecting rod mechanisms 322 can be arranged below the lifting seat 321 of each group of automatic lifting and locking mechanisms 3, and the lifting seat 321 can be driven by the multiple groups of connecting rod mechanisms 322 to lift and lower, so as to improve the reliability and stability of the lifting and lowering process of the lifting seat 321. Among them, the connecting rods 3222 of all the connecting rod mechanisms 322 are connected to the same driving assembly 33, that is, all the connecting rod mechanisms 322 share one group of driving assembly 33, or the connecting rods 3222 of each group of connecting rod mechanisms 322 can be connected to one driving assembly 33 respectively. Based on this, the automatic lifting and locking mechanism 3 as a whole is a pneumatic multi-link lifting and locking device.

[0093] In a feasible implementation, each group of automatic lifting and locking mechanisms 3 is provided with a group of driving components 33, and a cylinder connection seat 331 is provided at the end of the piston rod of the driving component 33. All the connecting rod mechanisms 322 are preferably evenly distributed on the periphery of the cylinder connection seat 331, and the connecting rods 3222 of all the connecting rod mechanisms 322 are rotatably connected to the cylinder connection seat 331 through a pin shaft to form a rotating pair. Based on this, the piston rod of the driving component 33 is lifted and lowered, which can drive the connecting rods 3222 of all the connecting rod mechanisms 322 to move synchronously, so as to realize the driving of all the connecting rod mechanisms 322. By adopting a method in which multiple groups of connecting rod mechanisms 322 share a group of driving components 33, the structure of the automatic lifting and locking mechanism 3 can be simplified on the basis of ensuring the normal operation of each connecting rod mechanism 322, the overall integration of the device can be improved, and the production and assembly process and operation cost of the device can be reduced.

[0094] In a feasible implementation manner, two sets of connecting rod mechanisms 322 are preferably provided below the lifting seat 321, and the two sets of connecting rod mechanisms 322 are arranged front and back with the cylinder connecting seat 331 as the center (the "front and back" before and after here refer to the front and back sides of the slag box 400, and the "left and right" mentioned above and below also refer to the left and right sides of the slag box 400, wherein, as Figure 2 and Figure 5 As shown, the side of the slag box 400 where the slag box observation window is set is the front side of the slag box 400. ) are symmetrically arranged. Specifically, the two sets of connecting rod mechanisms 322 are arranged with an interval of 180° around the piston rod axis of the driving assembly 33, as shown in FIG. Figure 11 to Figure 15 Based on this, the automatic lifting and locking mechanism 3 is a pneumatic double-link lifting and locking device as a whole.

[0095] like Figure 11 to Figure 15 As shown, considering that the second end of the connecting rod 1 3221 of each group of connecting rod mechanisms 322 is directly used to contact and slide with the lower surface of the lifting seat 321, although the lifting and lowering of the lifting seat 321 by the connecting rod 1 3221 can be realized, there will be a situation where the sliding is not smooth or the wear is serious, which not only makes the connecting rod 1 3221 and the lifting seat 321 easy to be damaged and has a short service life, but also reduces the reliability and stability of the automatic lifting and locking mechanism 3. Based on this, in some feasible implementations, a pressure head 323 can be further provided in the lifting assembly 32. The pressure head 323 includes a pin shaft 3231 and a sleeve 3232 rotatably installed on the outside of the pin shaft 3231. The pin shaft 3231 passes through the second end portion of the connecting rod 3221. The second end portion of the connecting rod 3221 is in rolling contact with the lower surface of the lifting seat 321 through the sleeve 3232, thereby reducing wear and improving the smoothness between the lifting assembly 32 and the lifting seat 321, thereby improving the reliability and stability of the device.

[0096] In a feasible implementation, the shaft sleeve 3232 can be a standard roller part available on the market, which is rotatably connected to the end of the pin shaft 3231 through a bearing. Specifically, the inner ring of the bearing is fixedly connected to the pin shaft 3231 by a key, and the shaft sleeve 3232 is mounted on the outside of the outer ring of the bearing and fixedly connected to the outer ring of the bearing by a key.

[0097] In a feasible implementation, in order to increase the contact area between the pressure head 323 and the lower surface of the lifting seat 321, and thus improve the support stability of the pressure head 323 on the lifting seat 321, multiple aforementioned shaft sleeves 3232 can be simultaneously provided on the pin shaft 3231 of the same pressure head 323. Taking the simultaneous provision of two aforementioned shaft sleeves 3232 on the pin shaft 3231 of the same pressure head 323 as an example, the pin shaft 3231 passes through the second end of the connecting rod 1 3221, and a shaft sleeve 3232 is respectively provided at both ends of the pin shaft 3231, and the rotation axes of the two shaft sleeves 3232 are both coaxial with the pin shaft 3231.

[0098] In a feasible implementation, in order to simplify the structure of the connecting rod mechanism 322 and improve its performance, the revolving pair between the connecting rod 1 3221 and the connecting rod 2 3222 is preferably realized by the pin 3231 of the above-mentioned pressure head 323. Specifically, the pin 3231 simultaneously penetrates the second end of the connecting rod 1 3221 and the first end of the connecting rod 2 3222, and the second end of the connecting rod 1 3221 and the first end of the connecting rod 2 3222 are both rotatably connected with the pin 3231 to form a revolving pair. At the same time, the two ends of the pin 3231 are respectively rotatably installed with the above-mentioned shaft sleeve 3232. This structure also makes the assembly of the connecting rod mechanism 322 and the pressure head 323 more compact.

[0099] It should be noted that when multiple sets of connecting rod mechanisms 322 are simultaneously arranged in the automatic lifting and locking mechanism 3, the mounting method of the pressing head 323 on each set of connecting rod mechanisms 322 is the same, and the size specifications of each pressing head 323 are also the same.

[0100] In a feasible implementation, a positioning guide mechanism 324 is also provided in the lifting assembly 32, which can improve the linkage between the connecting rod mechanism 322 and the lifting seat 321, thereby improving the stability of the lifting seat 321 during the lifting process, and preventing the lifting seat 321 from having a relative position shift with the pressure head 323 during the lifting process, thereby affecting the performance of the automatic lifting locking mechanism 3. Specifically, Figure 7 and Figure 8As shown, the positioning guide mechanism 324 includes a horizontal guide groove 3241 and a guide protrusion 3242. The horizontal guide groove 3241 is opened on the side wall of the lifting seat 321, and the guide protrusion 3242 is arranged at the second end portion of the connecting rod 1 3221, and the guide protrusion 3242 is slidably embedded in the horizontal guide groove 3241. When the connecting rod 1 3221 switches back and forth between the first state and the second state, the guide protrusion 3242 can slide along the horizontal guide groove 3241 to drive the lifting seat 321 to rise and fall synchronously.

[0101] In a feasible implementation manner, it is preferred that side walls are provided on the left and right sides of the lifting seat 321, and horizontal guide grooves 3241 are provided on the left and right side walls. A guide protrusion 3242 is respectively provided on both sides of the second end portion of each connecting rod 3221 to slideably cooperate with the horizontal guide grooves 3241 on the left and right side walls of the lifting seat 321, respectively.

[0102] In a feasible implementation manner, the aforementioned positioning guide mechanism 324 is disposed between each set of connecting rod mechanisms 322 and the lifting seat 321 . For a single set of connecting rod mechanisms 322, the corresponding horizontal guide grooves 3241 on the left and right sides are arranged symmetrically, and the strokes of the horizontal guide grooves 3241 on the left and right sides are consistent. Generally, when the connecting rod 3221 is in the first state, the guide protrusion 3242 just slides to one end of the horizontal guide groove 3241, and when the connecting rod 3221 is in the second state, the guide protrusion 3242 just slides to the other end of the horizontal guide groove 3241. By utilizing the limiting effect of the two ends of the horizontal guide groove 3241 on the guide protrusion 3242, the supporting stability of the connecting rod mechanism 322 on the lifting seat 321 in the first state and the second state can be improved. In particular, in the second state, the connecting rod 3221 is vertically self-locking, and the limiting effect of the horizontal guide groove 3241 on the guide protrusion 3242 is beneficial to maintaining the vertical self-locking state of the connecting rod 3221, thereby improving the sealing durability and sealing stability of the device to the slag box 400.

[0103] In a feasible implementation, the guide protrusion 3242 is preferably a cylindrical guide protrusion, which has the characteristic of smooth sliding. In actual operation, the guide protrusion 3242 can be a protrusion structure specially set on both sides of the end of the connecting rod 3221. The protrusion structure can be integrally formed with the connecting rod 3221, or assembled to the connecting rod 3221 by welding, bolt connection, etc., and the specific setting position can be slightly lower than the pin 3231. In addition, the guide protrusion 3242 can also be formed by the end of the pin 3231, that is, the two ends of the pin 3231 extend out of the two sleeves 3232 respectively, so that the two ends of the two sleeves 3232 in the pressure head 323 form a pin convex part respectively, and the pin convex part can also serve as the guide protrusion 3242 to slide with the horizontal guide groove 3241. In order to improve the compactness of the structure of the device, it is preferred to adopt a structural form in which the two ends of the pin 3231 serve as the guide protrusion 3242.

[0104] In a feasible implementation manner, in order to reduce or avoid the wear of the horizontal guide groove 3241 on both ends of the pin shaft 3231, additional sleeves may be respectively mounted on the protruding portions of the pin shaft at both ends of the pin shaft 3231 to protect the pin shaft 3231.

[0105] Taking the structure in which two groups of connecting rod mechanisms 322 are arranged under the lifting seat 321 as an example, four horizontal guide grooves 3241 are opened on the left and right side walls of the lifting seat 321, among which each two horizontal guide grooves 3241 opposite to each other on the left and right sides form a group, so as to be slidably installed with the guide protrusions 3242 on the left and right sides of the corresponding group of connecting rod mechanisms 322.

[0106] In order to further improve the lifting and tightening effect of the automatic lifting and locking mechanism 3 on the slag box 400, Figure 11 to Figure 15 As shown, the automatic lifting and locking mechanism 3 is further provided with a safety assembly 35. The safety assembly 35 includes a guide rod 351 and a locking member 352. The guide rod 351 is arranged on one of the cylinder connection seat 331 and the lifting seat 321, and the guide rod 351 is parallel to the lifting direction of the piston rod in the driving assembly 33, and a positioning structure 1 is arranged on the guide rod 351; the locking member 352 is arranged on the other of the cylinder connection seat 331 and the lifting seat 321, and a guide rod hole 3521 for the guide rod 351 to movably penetrate is arranged on the locking member 352, and a positioning structure 2 adapted to the aforementioned positioning structure 1 is arranged on the hole wall of the guide rod hole 3521. When the connecting rod 1 3221 is in the first state, the aforementioned positioning structure 1 and positioning structure 2 are separated from each other. When the connecting rod 1 3221 is in the second state, the aforementioned positioning structure 1 and positioning structure 2 are positioned and locked. When it is necessary to switch the connecting rod 1 3221 back to the first state, the positioning structure 1 and positioning structure 2 can be unlocked manually or automatically to ensure the normal telescopic operation of the piston rod in the drive assembly 33.

[0107] In a feasible implementation, one of the positioning structure 1 and the positioning structure 2 is a positioning block, which can be telescopically embedded in the rod wall of the guide rod 351 or the hole wall of the guide rod hole 3521, and the positioning block is connected to the guide rod 351 or the locking member 352 through a connecting member; the other of the positioning structure 1 and the positioning structure 2 is a positioning groove adapted to the positioning block. The positioning block can be a spherical block, a cylindrical block or a prismatic block, and the shape and contour of the positioning groove are adapted to the positioning block. If the aforementioned connecting member adopts a connecting rod or a threaded rod, since the connecting rod or the threaded rod is fastened to the locking member 352 through a mechanical structure, it is necessary to manually loosen or tighten the connecting rod or the threaded rod, and then adjust the relative position relationship between the positioning block and the positioning groove to meet the form state of the connecting rod 1 3221. In this design, the safety component 35 needs manual assistance to achieve locking and unlocking. If the aforementioned connecting member adopts an elastic member such as a spring, the elasticity of the elastic member and the relative action relationship between the positioning groove and the positioning block can be directly utilized to realize automatic adjustment of the relative position relationship between the positioning block and the positioning groove. In this design, the safety component 35 can realize automatic locking and automatic unlocking, so that the entire operation process of the automatic jacking and locking mechanism 3 does not require human intervention, and can ensure the automatic operation of the automatic jacking and locking mechanism 3 on the basis of the self-locking performance of the lifting connecting rod 3221.

[0108] In a feasible implementation, the positioning block is preferably connected to the guide rod 351 or the locking member 352 by an elastic member to realize automatic locking and automatic unlocking of the safety assembly 35. At the same time, considering that the columnar or prismatic positioning block and the corresponding positioning groove cannot be automatically separated, the positioning block is preferably an arc surface positioning block, and the positioning groove is set as an arc surface positioning groove. By using the arc surface of the positioning block and the positioning groove, the sliding locking and sliding separation unlocking of the positioning block and the positioning groove can be realized.

[0109] In a feasible implementation manner, the guide rod 351 is preferably fixed to the cylinder connection seat 331 by means including but not limited to threaded connection, interference fit, welding, etc., and the guide rod 351 is preferably coaxial with the piston rod of the driving assembly 33. Correspondingly, the locking member 352 is disposed above the lifting seat 321, and at the same time, the lifting seat 321 has a guide rod hole 2 for the guide rod 351 to movably penetrate, and the guide rod hole 2 is coaxially installed with the guide rod hole 3521.

[0110] In a feasible implementation manner, the locking member 352 is a locking block structure, which is fixed on the lifting seat 321 by means of, but not limited to, bolt connection, welding, etc.

[0111] In a feasible implementation, the second positioning structure is a curved surface positioning block 3522, and a mounting channel 3524 that penetrates the guide rod hole 3521 is provided on the locking member 352. The curved surface positioning block 3522 can be telescopically embedded in the mounting channel 3524. The curved surface positioning block 3522 is connected or abutted against the end of the mounting channel 3524 through the elastic member 3523, and when no guide rod 351 passes through the guide rod hole 3521, the curved convex surface of the curved surface positioning block 3522 can be pushed out into the guide rod hole 3521 by the elastic member 3523. The curved surface positioning block 3522 can be specifically selected as a hemispherical positioning block or a spherical positioning block. Correspondingly, the first positioning structure is a curved surface positioning groove 3511 adapted to the aforementioned curved surface positioning block 3522, and the curved surface positioning groove 3511 is provided on the outer wall of the guide rod 351. When the connecting rod 3221 is in the first state, the guide rod 351 can be located below the guide rod hole 3521, or can pass through the guide rod hole 3521 (that is, the guide rod 351 always passes through the guide rod hole 3521). As the connecting rod 3221 switches to the second state, the guide rod 351 passes through the guide rod hole 3521 and moves in the guide rod hole 3521. In this process, due to the squeezing effect of the rod wall of the guide rod 351 on the arc surface positioning block 3522, the arc surface positioning block 3522 retracts into the installation channel 3524, and the elastic member 3523 is compressed at this time. After switching to the second state, the arc surface positioning groove 3511 just moves to the installation channel 3524 in the guide rod hole 3521. At this time, since the arc surface positioning groove 3511 is concave relative to the rod wall of the guide rod 351, the squeezing effect on the arc surface positioning block 3522 disappears. The arc surface positioning block 3522 can be pushed out of the guide rod hole 3521 under the elastic release effect of the elastic member 3523 and embedded in the arc surface positioning groove 3511. The safety assembly 35 completes automatic locking, realizing the double self-locking of the automatic lifting and locking mechanism 3. At this time, the piston rod no longer telescopes. On the contrary, when the slag box 400 needs to be lowered, the guide rod 351 moves downward under the pulling action of the piston rod, and the arc surface positioning groove 3511 moves downward and smoothly separates from the arc surface positioning block 3522 in an arc surface sliding manner, and then the arc surface positioning block 3522 is squeezed by the rod wall of the guide rod 351 again, retracted into the installation channel 3524, and released again when the slag box 400 is lifted next time. In this way, the safety component 35 can be switched back and forth between the automatic unlocking and automatic locking states.

[0112] In a feasible implementation manner, in order to enhance the safety effect of the safety assembly 35, it is preferred that a plurality of aforementioned arc surface positioning blocks 3522 are simultaneously arranged on the periphery of the guide rod hole 3521, and correspondingly, the arc surface positioning grooves 3511 are arranged one-to-one with the arc surface positioning blocks 3522, or, a full circle of connected arc surface positioning grooves 3511 are arranged on the guide rod 351, and the full circle of connected arc surface positioning grooves 3511 can be adapted and locked with a plurality of arc surface positioning blocks 3522 at the same time.

[0113] In a feasible implementation manner, preferably, the outer circumference of the guide rod hole 3521 is symmetrically provided with two aforementioned arc surface positioning blocks 3522 to ensure the locking effect.

[0114] In a feasible implementation, the mounting holes 3524 and the arc surface positioning blocks 3522 are arranged in a one-to-one correspondence, the first end of each mounting hole 3524 is connected to the guide rod hole 3521, and the second end of each mounting hole 3524 is sealed to provide support for the end of the elastic member 3523 in the mounting hole 3524. Specifically, the second end of each mounting hole 3524 can be sealed in the form of a blind hole. In addition, the second end of each mounting hole 3524 can be set through, and an internal threaded hole can be set at the second end of each mounting hole 3524, so that the second end of the mounting hole 3524 can be sealed by setting a pre-tightening screw 3525 in the internal threaded hole. Since the pre-tightening screw 3525 is threadedly connected to the internal threaded hole, the elastic force of the elastic member 3523 can be adjusted by screwing in or out to adjust the pre-tightening screw 3525, thereby adjusting the tightening force of the arc surface positioning block 3522 on the arc surface positioning groove. The arrangement of the pre-tightening screw 3525 is not only convenient for adjusting the tightening force, but also convenient for disassembly, assembly and maintenance of the elastic member 3523 and the arc-surface positioning block 3522 in the installation channel 3524 .

[0115] In a feasible implementation, Figure 8 to Figure 15 As shown, the base 31 can adopt the following structure: the base 31 includes a beam seat 311 and a pair of vertical arms 312 arranged symmetrically front and back, the beam seat 311 is connected between the bottoms of the two vertical arms 312, the driving assembly 33 is arranged below the beam seat 311, the connecting rod mechanism 322, the lifting seat 321 and the support arm assembly 34 are all arranged above the beam seat 311, and the first end of the connecting rod 3221 is rotatably connected to the beam seat 311. In order to improve the lifting stability and reliability of the support arm assembly 34, it is preferred that the two ends of at least one of the lifting seat 321 and the support arm assembly 34 are respectively matched with the sliding guides of the two vertical arms 312.

[0116] In a feasible implementation manner, a connecting rod seat 313 is installed on the cross beam seat 311 by welding or bolt connection, and the first end of the connecting rod 3221 is rotatably connected to the connecting rod seat 313 through a pin to form a rotating pair.

[0117] In a feasible implementation, preferably only the support arm assembly 34 and the two vertical arms 312 are slidably guided and matched, and the support arm assembly 34 and the vertical arms 312 are preferably nested inside and outside to achieve sliding fit. Figure 1 and Figure 7As shown, the inner sides of the two vertical arms 312 are provided with a slide groove 3121; the two ends of the support arm assembly 34 are respectively movably embedded in the slide grooves 3121 of the two vertical arms 312. Based on the sliding cooperation relationship between the support arm assembly 34 and the two vertical arms 312, the support arm frame 341 can be directly placed on the lifting seat 321, but the two are not connected; in addition, in order to improve the structural stability, the bottom of the support arm frame 341 can also be connected to the lifting seat 321 by bolt connection or other methods.

[0118] In a feasible implementation, Figure 8 and Fig.11 As shown, the arm assembly 34 includes an arm frame 341 and an arm body 343, wherein the arm frame 341 is located above the jacking seat 321, and rollers 342 are respectively provided at both ends of the arm frame 341, and the rollers 342 at both ends of the arm frame 341 are respectively installed in the slide grooves 3121 of the two vertical arms 312 in a rolling manner; the outer wall of the roller 342 and the front and rear groove walls of the slide groove 3121 are in rolling contact and cooperation, which can not only support the arm frame 341 to maintain an upright state, but also improve the sliding smoothness between the arm frame 341 and the slide groove 3121. The arm body 343 is arranged on one side of the arm frame 341. When the entire automatic jacking locking mechanism 3 is installed and used, the arm body 343 faces the slag box 400 to contact and cooperate with the edge of the top sealing surface of the slag box 400, so as to achieve the lifting and supporting effect of the slag box 400 during the lifting process of the slag box 400.

[0119] In a feasible implementation, Fig. 9 As shown, the support arm body 343 is a vertical plate structure, and a plurality of support arm bodies 343 can be arranged at intervals on the support arm frame 341 at the same time. The plurality of support arm bodies 343 can provide multi-point support for the slag box 400, thereby improving the support stability of the support arm assembly 34 on the slag box 400 during the lifting or lowering process of the slag box 400. In order to further enhance the structural stability of the support arm assembly 34, all the support arm bodies 343 on the support arm frame 341 can be connected and assembled into one body through a reinforcing cross bar 344 to prevent a single support arm body 343 from bending and deforming during use.

[0120] In a feasible implementation, a baffle is provided on the top of the slide groove 3121 to limit the uppermost position of the support arm assembly 34, to prevent the support arm assembly 34 from excessively moving along the slide groove 3121 during the lifting process, and to protect the support arm assembly 34 from slipping.

[0121] In a feasible implementation, the base 31 can be fixedly connected to the two frame legs through the outer side surfaces of the two vertical arms 312, and the specific fixing method can be a detachable connection method such as bolt connection. The bottom outer side of the two vertical arms 312 is also provided with a fixing plate 314, which can be positioned and matched with the frame legs to guide and position the base 31 between the two frame legs. In addition, the fixing plate 314 can also be fixed to the frame legs by bolt connection or other methods to further reinforce the base 31.

[0122] In a feasible implementation manner, in order to improve the overall structural stability of the base 31 , a reinforcing crossbeam 315 is preferably connected to the middle and top between the two vertical arms 312 .

[0123] In a feasible implementation manner, the above-mentioned discharge and flow guiding mechanism 2 is as follows: Figure 1 to Figure 3 As shown, it includes a discharge pipe 21 and a wear-resistant ceramic valve arranged on the discharge pipe 21, one end of the discharge pipe 21 is used to be sealed and connected to the coal mill slag discharge port 500, and the other end of the discharge pipe 21 is sealed and connected to the discharge port 11. In practical applications, a plurality of wear-resistant ceramic valves are generally arranged at intervals along the material conveying direction on the discharge pipe 21, such as two, three or four. As a preferred solution, two wear-resistant ceramic valves can be arranged, which are a ceramic wear-resistant plug valve 23 and two pneumatic wear-resistant ceramic rotary slag discharge valves 24 along the material conveying direction, and the two pneumatic wear-resistant ceramic rotary slag discharge valves 24 are generally connected to the discharge port on the frame 1 through a flange pipe. The sealing pair of the first ceramic wear-resistant gate valve 23 and the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 are preferably made of zirconia composite ceramics. The two valves are installed in series. The first ceramic wear-resistant gate valve 23 is normally open and does not affect the operation of the entire equipment. When the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 fails, the first ceramic wear-resistant gate valve 23 can be immediately activated, which greatly increases the safety and reliability of equipment operation. Both valves use ceramic wear-resistant valves because their ceramic sealing surfaces are more wear-resistant, have a high degree of finish, and are more tightly sealed, making the valve sealing surfaces less prone to wear and having a longer service life.

[0124] In a feasible implementation, the discharge pipe 21 is generally a cylindrical pipe, which is arranged obliquely above the frame panel 12, the bottom end of the discharge pipe 21 is sealed and connected to the discharge port 11, and the top of the discharge pipe 21 is generally provided with a feed hopper 22. In order to promote material diversion, a hopper partition 221 is also provided in the feed hopper 22, which can divide the feed hopper 22 into two spaces, both of which are connected to the discharge pipe 21.

[0125] In a feasible implementation, Figure 1 to Figure 3As shown, the discharge pipe 21 is located on one side of the long side of the frame panel 12 and is inclined toward the upper rear of the slag box 400, thereby forming an automatic locking and fully sealed slag discharge device for the coal mill with a discharge guide mechanism located at the rear.

[0126] The following takes the automatic lifting and locking mechanism 3 as a pneumatic double connecting rod drive, and the automatic lifting and locking mechanism 3 is provided with a pressure head 323, a positioning guide mechanism 324 and a safety component 35 as an example, and specifically describes the working principle of the automatic locking and fully sealed slag discharge device 100 for the coal mill:

[0127] like Figure 1 to Figure 3 As shown, the automatic lifting and locking mechanism 3 is generally installed upright on the two short sides of the rack 1, and the automatic lifting and locking mechanism 3 is located between the two rack legs on the short sides of the rack 1. After installation, the entire automatic lifting and locking mechanism 3 is not higher than the upper surface of the rack panel 12 in the rack 1.

[0128] In the initial state, the connecting rod 3221 is in the Fig.12 In the first state shown, the support arm body 343 is at the lowest position. After the empty slag box 400 is transported to the slag box accommodating space 19 below the frame panel 12, the support arm body 343 is located below the edge of the top sealing surface of the slag box 400.

[0129] The driving assembly 33, that is, the piston rod of the cylinder moves upward, and the lifting seat 321 is lifted vertically upward under the lifting of the pressure head 323 and the guide protrusion 3242, and drives the supporting arm body 343 to lift up; after the supporting arm body 343 contacts the edge of the top sealing surface of the slag box 400, the connecting rod 1 3221 has not reached the second state, and the lifting seat 321 continues to lift up, and drives the supporting arm body 343 to lift the slag box 400 until the connecting rod 1 3221 reaches the second state. Fig.13 In the second state shown, the supporting arm body 4 lifts the slag box 400 to be in close contact with the first sealing strip 17 on the lower surface of the frame panel 12. At this time, in the double-group connecting rod mechanism 322, the connecting rod 1 3221 is vertically upward, and the movement direction is the same as the extension direction of the cylinder piston rod, which is at a dead angle. The connecting rod mechanism 322 is in a self-locking state, thereby realizing the self-locking of the automatic lifting locking mechanism 3. Even if the system is powered off or the gas source is cut off, the vertically upward connecting rod 1 3221 will not automatically fall down due to the leakage of the cylinder, and the slag box 400 can be kept in a tight and sealed state.

[0130] When the slag box 400 is full of materials and needs to be lowered, the cylinder receives a descending signal, and the cylinder is controlled by the reversing solenoid valve to switch the direction of the air source. Then the piston rod of the cylinder moves downward and strongly pulls the connecting rod 3221 to rotate downward until the connecting rod 3221 switches to the position as shown in the figure. Fig.12In this process, the supporting arm assembly 34 and the lifting seat 321 are pressed on the pressure head 323 by gravity and keep in contact with the pressure head 323, so that the supporting arm assembly 34 and the lifting seat 321 slowly fall vertically downward under the driving of the pressure head 323 and the guide protrusion 3242. After the slag box 400 falls to the ground or is hydraulically unloaded below, the supporting arm assembly 34 and the lifting seat 321 continue to fall until the connecting rod 1 3221 switches to the position as shown in FIG. Fig.12 The first state is shown.

[0131] When the connecting rod 3221 is switched from the first state to the second state, the locking member 352 presses the arc surface positioning block 3522 onto the guide rod 351 through the pre-tightening screw 3525. As the cylinder lifting stroke is in place, the arc surface positioning block 3522 slides into the arc surface positioning groove, so that the guide rod 351 is automatically locked. Combined with the self-locking of the connecting rod 3221 in the connecting rod mechanism 322, the double self-locking of the automatic lifting locking mechanism 3 is realized, which can effectively prevent the device from falling due to its own weight after power failure and gas failure.

[0132] It can be seen that the automatic lifting and locking mechanism 3 set in the automatic locking and fully sealed slag discharge device 100 of the coal mill realizes the automatic lifting, automatic locking, automatic unlocking and automatic descent of the slag box 400 through the structural setting of the connecting rod mechanism 322 in the lifting assembly 32 and the lifting seat 321, relying only on the linear telescopic driving action of the driving assembly 33. The entire operation process is stable, standardized and reliable, and the slag box is tightly sealed, which can solve the problems that the slag box unlocking and locking in the prior art rely on manual multi-step operations, which not only has low work efficiency, but also the non-standard manual operation easily leads to the failure of the slag box sealing and the reduction of the service life of the slag box locking device. In addition, the automatic lifting and locking mechanism 3 is suspended and installed on the frame 1 through the base 31, and the lifting of the arm assembly 34 can always be based on the frame panel 12, which fundamentally eliminates the phenomenon of poor sealing of the slag discharge system caused by the uneven ground and the hydraulic lifting deflection and the dust flying phenomenon during the slag discharge process, and has the advantages of protecting the working environment, extending the service life of the equipment, saving maintenance costs, and reducing the labor intensity of workers.

[0133] The automatic lifting and locking mechanism 3 is based on a pneumatic lifting design and has the characteristics of automatic locking, tight sealing, long equipment life, high working efficiency, etc. It fundamentally changes the status quo that the traditional lifting and locking is completed in multiple steps and completely relies on manual standardized operation. It also breaks through the installation position and structural limitations of the traditional lifting and locking device, solves the sealing leakage caused by the irregular sealing of the slag box and the flying of coal ash and dust caused by the slag discharge process, and solves the influence of the installation position of the lifting and locking device on the overall slag discharge equipment layout. The specific beneficial effects are as follows:

[0134] (i) The wear-resistant ceramic valve is installed on the discharge pipe 21 of the discharge guide mechanism 2, which can fundamentally change the traditional slag discharge system valves that are not tightly sealed and easy to wear, easily causing internal leakage and external leakage, and then causing the phenomenon of gas leakage and fly-by of coal ash dust during the slag discharge process.

[0135] (ii) In the traditional coal mill slag discharge system, the slag box is lifted by a hydraulic trolley placed on the ground below the slag box, thereby achieving complete sealing between the slag box and the frame panel. Some power plants have uneven ground. After the hydraulic trolley lifts the slag box, the slag box and the frame panel will be in contact at an angle, making it difficult to achieve manual locking. In this solution, the base is used to be installed on the coal mill frame, and the support arm assembly can always drive the slag box to move up and down based on the frame panel, avoiding the sealing angle formed by the hydraulic trolley relying on the ground as the reference plane to move up and down. It fundamentally eliminates the phenomenon of loose sealing of the slag discharge system caused by the deflection of the hydraulic jacking due to uneven ground and the phenomenon of dust flying during the slag discharge process, which has the advantages of protecting the working environment, extending the service life of equipment, saving maintenance costs, and reducing the labor intensity of workers.

[0136] (III) Manual locking is time-consuming and labor-intensive, and the locking effect is changed due to human uncertainties. This solution realizes the automatic lifting, locking, unlocking and lowering of the slag box by means of the connecting rod mechanism in the jacking assembly in conjunction with the structural setting of the jacking seat, relying only on the linear telescopic driving action of the driving assembly. The entire operation process is smooth, standardized and reliable, and the slag box is tightly sealed. It can not only solve the problems in the prior art that the unlocking and locking of the slag box rely on manual multi-step operations, which not only has low work efficiency, but also the slag box seal is prone to failure, but also eliminates the disadvantages caused by reliance on human subjective factors.

[0137] (IV) In conventional hydraulic top-mounted fully sealed slag discharge equipment, the slag box locking device is located above the short sides of the coal mill frame panel, which will occupy the upper space of the panel, so that the slag discharge pipe is fixed within the limited range of the long side of the frame panel in the design and installation position, and cannot adapt to the compact discharge port space of some power plants. In this solution, the support arm assembly is set at the top of the automatic jacking and locking mechanism, and in the first state and the second state, the support arm assembly is not higher than the upper surface of the frame panel in the coal mill frame, which can avoid the automatic jacking and locking mechanism from occupying the space above the frame panel. There is no possibility of any interference between the automatic jacking and locking mechanism and the slag discharge pipe, thereby avoiding the situation where the slag discharge pipe and the slag box locking device must be arranged on the same side of the frame panel due to space limitations in the use occasion. This solution maximizes its use scenarios, making the coal mill top-mounted fully sealed slag discharge equipment suitable for any on-site layout.

[0138] (V) The entire automatic lifting and locking mechanism is installed vertically and is mostly embedded in the inner side of the coal mill frame, thus avoiding the problem of tilted installation of traditional lifting and locking devices and occupying too much space around the coal mill frame.

[0139] (VI) An automatic lifting and locking mechanism is configured on each side of the frame 1 to ensure the completely sealed connection between the slag box 400 and the discharge guide mechanism 2 in the slag discharge device, and to prevent the uncertainty of manual locking from causing the unreliability of the system sealing. The automatic lifting and locking mechanism 3 is self-locking based on a pneumatic double-link structure. Even if the air source is cut off and the equipment is powered off, it will not automatically fall down with the exhaust of the pneumatic actuator, ensuring the sealing reliability of the slag discharge device.

[0140] Example 2

[0141] like Figures 4 to 6 As shown, this embodiment proposes an automatic locking and fully sealed slag discharge device 100 for a coal mill, which differs from Embodiment 1 only in that the discharge pipe 21 is located on one side of the short side of the frame panel 12 and is inclined toward the upper left of the slag box 400, thereby forming an automatic locking and fully sealed slag discharge device 100 for a coal mill with a horizontally placed discharge guide mechanism.

[0142] The above-mentioned coal mill automatic locking fully sealed slag discharge device 100 with a horizontally placed discharge guide mechanism breaks through the design limitation that the slag discharge pipeline can only be set within the limited range of the long side of the frame panel due to the interference of the slag box locking device, and can flexibly adapt to the compact discharge port space of some power plants. The remaining structural setting form, working principle and working effect of the coal mill automatic locking fully sealed slag discharge device 100 of this embodiment are the same as those of Example 1, and will not be repeated here.

[0143] Example 3

[0144] like Fig.16 As shown, this embodiment provides a coal mill automatic slag discharge system 200, including a control cabinet 300 and the coal mill automatic locking fully sealed slag discharge device 100 of Example 1, and the control cabinet 300 is communicatively connected with all wear-resistant ceramic valves and drive components 33 on the discharge pipe 21.

[0145] Example 4

[0146] like Fig.16As shown, this embodiment provides a coal mill automatic slag discharge system 200, which is further provided with an automatic pressure relief device 4, a spray device 5 and a material level meter 6 on the basis of embodiment 3. The automatic pressure relief device 4 is arranged on the frame 1 and located at the discharge port 11. The automatic pressure relief device 4 is a common automatic pressure relief component, such as a mature high-pressure pressure relief valve on the market, which is mainly used to relieve pressure inside the slag box 400 and eliminate dust through the filter screen, thereby achieving the purpose of cleaning the environment; the spray device 5 is arranged on the frame 1 and located at the discharge port 11. The spray device 5 is used to spray and cool the inside of the slag box 400 to avoid the occurrence of spontaneous combustion accidents of stone coal in the box; the material level meter 6 is arranged on the frame 1 through the lifting mechanism 7, and the frame panel 12 is provided with a material level meter port 18 for the material level meter 6 to pass through. The lifting mechanism 7 is used to drive the material level meter 6 to insert or detach from the slag box 400 through the material level meter port 18, and the material level meter 6 is used to detect whether the material level inside the slag box 400 reaches the preset position. The lifting mechanism 7 includes a lifting cylinder 71 and a cylinder support 72. Figure 7 and Fig.16 As shown, the lifting cylinder 71 is mounted on the upper surface of the frame panel 12 through a cylinder bracket 72; specifically, the bottom of the lifting cylinder 71 is connected to the top of the cylinder bracket 72, the piston rod of the lifting cylinder 71 faces downward and is connected to the level meter 6, and the piston rod of the lifting cylinder 71 is vertically extended and retracted to drive the level meter 6 to rise and fall.

[0147] In a feasible implementation manner, the automatic pressure relief device 4, the spray device 5 and the material level meter 6 are all located at the periphery of the discharge port 11, wherein the automatic pressure relief device 4 and the spray device 5 are both fixed on the frame panel 12 and both penetrate the frame panel 12 (a sealing ring can be provided at the penetration position for sealing), and the box opening of the slag box 400 has a larger diameter than the discharge port 11 to ensure that after the box opening of the slag box 400 is sealed and docked with the discharge port 11, the automatic pressure relief device 4 and the spray device 5 can be located in the slag box 400. 0; after the slag box 400 is sealed and docked with the discharge port 11, the material level meter port 18 is connected with the box port of the slag box 400, and the material level meter 6 is erected above the material level meter port 18 through the above-mentioned lifting mechanism 7. During the sealed slag discharge process, the material level meter 6 descends under the drive of the lifting mechanism 7. While the bottom end of the material level meter 6 extends into the interior of the slag box 400, the material level meter 6 is also sealed and docked with the material level meter port 18 through the second sealing strip 61 arranged thereon to prevent air leakage and powder leakage at the material level meter port 18 during the slag discharge process. When the coal mill is discharging slag, the lifting cylinder 71 drives the material level meter 6 to extend into the interior of the slag box 400 through the material level meter port 18 to detect changes in the material level height. When the stone coal in the slag box 400 reaches a certain height, the material level meter detection device sends out sound and light alarm signals. The above-mentioned second sealing strip 61 is generally preferably a temperature-resistant fluororubber sealing strip, and is embedded and installed in the end face of the material level meter 6. This installation method does not require bolts or the like for fixing, and is convenient for disassembly, installation, and replacement.

[0148] In a feasible implementation, the automatic pressure relief device 4, the spray device 5, the material level meter 6 and the lifting cylinder 71 of the lifting mechanism 7 are all connected to the control cabinet 300. The control cabinet 300 is generally an electric control cabinet, which is equipped with a fully sealed stone coal collection device operation control system, a pneumatic valve control solenoid valve, an air filter, a material level alarm system, a material level meter cylinder lifting control system, etc., to control the fully automatic operation of the coal mill automatic slag discharge system 200. The specific control process is as follows:

[0149] When the coal mill is operating normally, a hydraulic trolley is used to push the slag box 400 into the slag box accommodating space 19 directly below the frame panel 12, and then the locking mechanism 3 is automatically lifted to lift the slag box 400, so that the top sealing surface of the slag box 400 and the first sealing strip 17 of the frame panel 12 are in contact with each other and pressed and sealed, and then automatically enter a locked state. After the device is locked, the sealing force will not change with the fluctuation of the gas source pressure. During the lifting process of the slag box 400, the slag box 400 can be accurately positioned under the front and rear positioning action of the front limit block 15 and the rear limit block 16.

[0150] When the coal mill needs to discharge slag, the "open" button of the second pneumatic wear-resistant ceramic rotary slag discharge valve on the panel of the operating control cabinet 300 is pressed. First, the lifting cylinder 71 drives the material level meter 6 to move downward, and the probe of the material level meter 6 extends into the slag box 400 through the material level meter port 18. The second sealing strip 61 on the end face of the material level meter 6 interacts with and seals the frame panel 12; then the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 is opened (under normal circumstances, the first ceramic wear-resistant plug valve 23 is always open, and it is only used when the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 fails. It is usually only a spare valve), and the stone coal falls freely into the slag box 400 directly below the frame panel 12 along the feed hopper 22, the first ceramic wear-resistant plug valve 23, the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 and the discharge pipe 21.

[0151] When the material level meter 6 detects that the slag box 400 is full, the material level alarm device sends out an audible and visual alarm.

[0152] Press the "Close" button of the second pneumatic wear-resistant ceramic rotary slag discharge valve on the panel of the operation control cabinet 300. First, the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 is closed, and the automatic pressure relief device 4 automatically releases pressure to release the positive pressure of the slag box 400 in the stone discharge system, and then the lifting cylinder 71 automatically lifts the level meter 6, and the bottom end surface of the level meter 6 is separated from the frame panel 12.

[0153] Finally, the automatic lifting locking mechanism 3 automatically unlocks and lowers the slag box 400. Then the slag box 400 is pulled out by a hydraulic trolley, and then the slag box 400 is transported to the dumping point by a rotary forklift, thereby realizing the full-process closed discharge of stone coal.

[0154] During the normal discharge of the pebble coal by the coal mill, when the temperature of the pebble coal in the slag box 400 is too high, the pebble coal may spontaneously combust. The operation control cabinet 300 can automatically start the spraying device 5 to spray water into the slag box 400 to prevent the pebble coal from spontaneously combusting.

[0155] Based on the above-mentioned coal mill automatic slag discharge system 200, the fully closed discharge of stone coal from the coal mill slag discharge port 500 to the slag box 400 is realized. The entire slag discharge process is carried out in a completely closed environment, which fundamentally eliminates the phenomenon of poor sealing of the on-site slag discharge system, which leads to air leakage and dust flying during the slag discharge process. It has the advantages of tight sealing, clean working environment, extended equipment service life, saving maintenance costs, and reducing workers' labor intensity. Moreover, the entire slag discharge process is automatically operated, with a high degree of automation, and reliability and work efficiency are greatly improved.

[0156] Example 5

[0157] like Fig.17 As shown, this embodiment provides a coal mill automatic slag discharge system 200, which differs from Embodiment 4 only in that the coal mill automatic locking fully sealed slag discharge device 100 adopts the coal mill automatic locking fully sealed slag discharge device with a horizontally placed discharge guide mechanism disclosed in Embodiment 2, and the rest is the same as Embodiment 4 and will not be repeated here.

[0158] Example 6

[0159] This embodiment provides an automatic slag discharge system 200 for a coal mill, which is further configured with a hydraulic trolley on the basis of Embodiment 5 or 4 for transferring the slag box 400 to the slag box accommodating space 19, or moving the slag box 400 out of the slag box accommodating space 19 after the slag box 400 is full.

[0160] It should be noted that the aforementioned front-to-back direction and left-to-right direction are merely defined to facilitate the understanding of the solution by those skilled in the art and shall not constitute a limitation to the present invention.

[0161] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An automatic locking and fully sealed slag discharge device for a coal mill, characterized in that: include: A frame (1) is provided with a discharge port (11), and a slag box accommodating space (19) is provided below the discharge port (11); A discharge guide mechanism (2) is arranged on the frame (1) and is sealed to the discharge port (11), and the discharge guide mechanism (2) is used to transport the material discharged from the coal mill slag discharge port (500) to the discharge port (11); The automatic lifting and locking mechanism (3) comprises a base (31), a lifting assembly (32), a driving assembly (33) and a supporting arm assembly (34), wherein the base (31) is mounted on the frame (1), the lifting assembly (32) comprises a lifting seat (321) and a connecting rod mechanism (322), the connecting rod mechanism (322) comprises a connecting rod 1 (3221) and a connecting rod 2 (3222), the first end of the connecting rod 1 (3221) and the base (31) are connected to each other. The first connecting rod (31) is rotatably connected to the second connecting rod (3221), the second end of the connecting rod (3221) is rotatably connected to the first end of the connecting rod (3222), the lifting seat (321) is movably matched with the base (31) and is located above the connecting rod mechanism (322), and the second end of the connecting rod (3221) is in contact with the lifting seat (321); the driving component (33) is arranged on the base (31), and the driving component (33) is connected to the connecting rod (31). The second end of the second rod (3222) is rotatably connected to drive the second end of the second connecting rod (3222) to move, so that the first connecting rod (3221) swings and switches between a first state and a second state, wherein in the first state, the second end of the first connecting rod (3221) is in the lowest position, and the lifting seat (321) is lowered to the lowest position; in the second state, the first connecting rod (3221) is perpendicular to the lifting seat (321) and self-locked, the second end of the first connecting rod (3221) is in the highest position, and the lifting seat (321) is raised to the highest position; the support arm assembly (34) is arranged on the lifting seat (321), and the support arm assembly (34) can be raised and lowered synchronously with the lifting seat (321), so that the slag box (400) in the slag box accommodating space (19) is raised and sealed and docked with the discharge port (11), or lowered and separated from the discharge port (11).

2. The automatic locking and fully sealed slag discharge device for coal mill according to claim 1, characterized in that: The frame (1) comprises a frame panel (12) and frame legs, wherein: The frame panel (12) is arranged on the top of the frame legs, and the frame legs are arranged on both the left and right sides of the frame panel (12); the slag box accommodating space (19) is located below the frame panel (12); The frame panel (12) is provided with the discharge port (11), and the outer periphery of the bottom of the discharge port (11) is provided with a first sealing strip (17) for contacting and sealing with the sealing surface of the slag box (400); A front limit block (15) and a rear limit block (16) are respectively provided on the front and rear sides of the frame panel (12), and the front limit block (15) and the rear limit block (16) are respectively used to position the slag box (400) frontally and rearwardly.

3. The automatic locking and fully sealed slag discharge device for coal mill according to claim 2, characterized in that: The base (31) is arranged below the rack panel (12), the support arm assembly (34) is arranged at the top of the automatic lifting and locking mechanism (3), and in the first state and the second state, the support arm assembly (34) is not higher than the upper surface of the rack panel (12).

4. The automatic locking and fully sealed slag discharge device for coal mill according to claim 3 is characterized in that: The base (31) is fixed on the frame legs, and the automatic lifting and locking mechanisms (3) are arranged on both left and right sides of the frame panel (12).

5. The automatic locking and fully sealed slag discharge device for coal mill according to any one of claims 1 to 4, characterized in that: The driving component (33) is a cylinder, a hydraulic cylinder or an electric slide; the driving component (33) is used to drive the second end of the second connecting rod (3222) to rise and fall.

6. The automatic locking and fully sealed slag discharge device for coal mill according to claim 5, characterized in that: The automatic lifting and locking mechanism (3) further comprises a safety component (35), wherein the safety component (35) comprises: A guide rod (351) is arranged on one of the driving assembly (33) and the lifting seat (321), and the guide rod (351) is parallel to the lifting direction of the driving assembly (33), and a positioning structure 1 is arranged on the guide rod (351); A locking member (352) is arranged on the other of the driving assembly (33) and the lifting seat (321), the locking member (352) is provided with a guide rod hole (3521) for the guide rod (351) to movably pass through, and a second positioning structure adapted to the first positioning structure is arranged on the hole wall of the guide rod hole (3521); In the first state, the first positioning structure and the second positioning structure are separated from each other, and in the second state, the first positioning structure and the second positioning structure are positioned and locked.

7. The automatic locking and fully sealed slag discharge device for coal mill according to claim 6, characterized in that: One of the positioning structure 1 and the positioning structure 2 is a curved surface positioning block (3522), and the curved surface positioning block (3522) is telescopically embedded in the rod wall of the guide rod (351) or the hole wall of the guide rod hole (3521), and the curved surface positioning block (3522) is connected to the guide rod (351) or the locking member (352) through an elastic member (3523); The other of the positioning structure 1 and the positioning structure 2 is an arc surface positioning groove (3511) adapted to the arc surface positioning block (3522).

8. The automatic locking and fully sealed slag discharge device for coal mill according to any one of claims 1 to 4, characterized in that: In the automatic lifting and locking mechanism (3), two groups of connecting rod mechanisms (322) are arranged below the lifting seat (321), and the two groups of connecting rod mechanisms (322) are symmetrically arranged, and the connecting rods (3222) of the two groups of connecting rod mechanisms (322) are connected to the same driving assembly (33).

9. The automatic locking and fully sealed slag discharge device for a coal mill according to any one of claims 1 to 4, characterized in that: The lifting assembly (32) also includes a pressure head (323), and the pressure head (323) includes a pin shaft (3231) and a sleeve (3232) rotatably mounted on the outside of the pin shaft (3231), and the pin shaft (3231) is arranged at the second end portion of the connecting rod (3221), and the second end portion of the connecting rod (3221) is in rolling contact with the lifting seat (321) through the sleeve (3232).

10. The automatic locking and fully sealed slag discharge device for coal mill according to claim 9, characterized in that: The lifting assembly (32) further comprises a positioning guide mechanism (324), wherein the positioning guide mechanism (324) comprises: A horizontal guide groove (3241) is arranged on the side wall of the lifting seat (321); The guide protrusion (3242) is arranged at the second end portion of the connecting rod (3221), and the guide protrusion (3242) is slidably embedded in the horizontal guide groove (3241). When the connecting rod (3221) swings and switches between the first state and the second state, the guide protrusion (3242) can slide along the horizontal guide groove (3241) to drive the lifting seat (321) to rise and fall synchronously.

11. The automatic locking and fully sealed slag discharge device for coal mill according to any one of claims 1 to 4, characterized in that: The base (31) comprises a beam seat (311) and a pair of vertical arms (312) symmetrically arranged front and back, the beam seat (311) is connected between the bottoms of the two vertical arms (312), the driving assembly (33) is arranged on the beam seat (311), the connecting rod mechanism (322), the lifting seat (321) and the supporting arm assembly (34) are all arranged above the beam seat (311), and the first end of the connecting rod (3221) is rotatably connected to the beam seat (311), and the two ends of at least one of the lifting seat (321) and the supporting arm assembly (34) are respectively matched with the sliding guides of the two vertical arms (312).

12. The automatic locking and fully sealed slag discharge device for coal mill according to claim 11, characterized in that: The inner sides of the two vertical arms (312) are both provided with sliding grooves (3121); the two ends of the supporting arm assembly (34) are respectively movably embedded in the sliding grooves (3121) of the two vertical arms (312).

13. The automatic locking and fully sealed slag discharge device for coal mill according to claim 12, characterized in that: The support arm assembly (34) comprises: An arm support frame (341) is located above the lifting seat (321), and rollers (342) are respectively provided at both ends of the arm support frame (341), and the rollers (342) at both ends of the arm support frame (341) are respectively rollingly installed in the slide grooves (3121) of the two vertical arms (312); The support arm body (343) is arranged on one side of the support arm frame (341) and faces the slag box accommodating space (19).

14. The automatic locking and fully sealed slag discharge device for coal mill according to any one of claims 1 to 4, characterized in that: The discharge guide mechanism (2) comprises a discharge pipe (21) and a wear-resistant ceramic valve arranged on the discharge pipe (21); one end of the discharge pipe (21) is used for being sealedly connected to the coal mill slag discharge port (500), and the other end of the discharge pipe (21) is sealedly connected to the discharge port (11).

15. An automatic slag discharge system for a coal mill, characterized in that: It comprises a control cabinet (300) and a coal mill automatic locking fully sealed slag discharge device (100) as claimed in any one of claims 1 to 14, wherein the control cabinet (300) is communicatively connected with the discharge guide mechanism (2) and the drive assembly (33).

16. The automatic slag discharge system for coal mill according to claim 15, characterized in that: Also includes: an automatic pressure relief device (4), arranged on the frame (1) and located at the discharge port (11), the automatic pressure relief device (4) being used to relieve pressure inside the slag box (400); A spray device (5) is arranged on the frame (1) and is located at the discharge port (11), and the spray device (5) is used to spray and cool the interior of the slag box (400); A material level meter (6) is arranged on the frame (1) via a lifting mechanism (7); a material level meter opening (18) for the material level meter (6) to pass through is provided on the frame (1); the lifting mechanism (7) is used to drive the material level meter (6) to be inserted into or separated from the slag box (400) through the material level meter opening (18); the material level meter (6) is used to detect whether the material level inside the slag box (400) has reached a preset position; The automatic pressure relief device (4), the spray device (5), the material level meter (6) and the lifting mechanism (7) are all communicatively connected to the control cabinet (300), and the control cabinet (300) is at least used for: Controlling the lifting mechanism (7) to drive the material level meter (6) to move up and down; When the material level meter (6) detects that the material level in the slag box (400) reaches a preset position, the automatic pressure relief device (4) is controlled to release pressure and the valve in the discharge diversion mechanism (2) is closed, and the automatic lifting and locking mechanism (3) is controlled to automatically switch the connecting rod 1 (3221) from the second state to the first state, so as to drive the slag box (400) to descend and move away from the discharge port (11) through the automatic lifting and locking mechanism (3); When the temperature of the material in the slag box (400) reaches the self-ignition temperature, the spraying device (5) is controlled to spray water into the slag box (400) to reduce the temperature, so as to prevent the material from self-igniting.

17. The automatic slag discharge system for coal mill according to claim 15, characterized in that: It also includes a hydraulic trolley, which is used to transfer the slag box (400) to the slag box accommodating space (19) or move it out of the slag box accommodating space (19).

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