Automatic locking and full sealing slag discharge device of coal mill and automatic slag discharge system of coal mill

Abstract

The application discloses a kind of automatic locking full-sealed slag discharge devices of coal mill and automatic slag discharge system of coal mill, by installing automatic jacking locking mechanism on rack, automatic jacking, automatic locking, automatic unlocking and automatic lowering to slag box can be realized, whole operation process is stable, standard, reliable, and slag box is sealed tightly, can solve the problem that unlocking and locking of slag box in prior art rely on manual multi-step operation, not only low work efficiency, but also manual non-standard operation can lead to slag box sealing failure, service life reduction of slag box locking device and other problems.In addition, automatic jacking locking mechanism is installed on rack by base, the lifting of supporting arm assembly can always be based on rack panel, fundamentally eliminates the phenomenon that sealing of slag discharge system is not strict and the phenomenon that dust flies in slag discharge process caused by uneven ground hydraulic jacking slag box deflection, has the advantages of protecting working environment, prolonging equipment service life, saving maintenance cost, reducing labor intensity and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of thermal power generation, and relates to a full-sealing type discharging technology for stone coal of a coal mill, in particular to a full-sealing type discharging device for stone coal of a coal mill and a full-sealing type discharging system for stone coal of a coal mill. BACKGROUND

[0002] During the operation of a coal mill in a power plant, there are always some granular materials that are difficult to be ground, which are called "stone coal". The stone coal often needs to be sent from the workshop to the outdoor ash yard. During the process of collecting stone coal in the slag box and transferring the full stone coal slag box, a large amount of dust will inevitably be leaked, which will seriously pollute the environment of the workshop, reduce the safety and service life of the equipment, and also endanger the personal health of the workers in the workshop. Therefore, it is very important to popularize the use of the full-sealing type discharging technology for stone coal.

[0003] The inventor knows a top-sealing type discharging system for stone coal of a coal mill. When the slag box is full, the slag box locking device is unlocked by manually pulling counterclockwise. When the empty slag box returns, the hydraulic trolley lifts the slag box, and the slag box locking device is locked by manually pulling clockwise. It can be seen that:

[0004] (1) The lifting of the slag box in the system depends on the hydraulic trolley. However, the ground of some power plants is not flat, and 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, i.e. there is a gap between the sealing surface of the slag box and the sealing surface of the coal mill frame, the sealing is not tight, and a large amount of dust will still be leaked during the discharging process.

[0005] (2) The unlocking and locking of the slag box in the system depend on manual operation, and need to be completed in multiple steps. Not only is the work efficiency low, but also the uncertainty and non-standard of manual operation can lead to inconsistent sealing surfaces on both sides of the slag box or the use of brute force to disassemble, which can cause poor sealing between the sealing surface of the slag box and the sealing surface of the coal mill frame, and the use of brute force can even damage the slag box locking device and reduce the service life of the slag box locking device.

[0006] Therefore, the present application proposes a new full-sealing type discharging system for stone coal of a coal mill to overcome the problems of the above-mentioned top-sealing type discharging system, such as the dependence on manual unlocking and locking of the slag box, complicated operation steps, low work efficiency, unreliable sealing effect, and poor sealing of the slag box caused by the lifting of the hydraulic trolley. SUMMARY

[0007] The present application aims to provide a full-sealing type discharging device for stone coal of a coal mill and a full-sealing type discharging system for stone coal of a coal mill to solve the problems of the above-mentioned top-sealing type discharging system, such as the dependence on manual unlocking and locking of the slag box, complicated operation steps, low work efficiency, unreliable sealing effect, and poor sealing of the slag box caused by the lifting of the hydraulic trolley.

[0008] To achieve the above object, the present application provides the following scheme:

[0009] The present application provides an automatic locking and full-sealing slag discharge device for a coal mill, comprising:

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

[0011] A discharge flow guide mechanism, arranged on the rack and in sealing connection with the discharge port, for conveying the material discharged from the coal mill slag discharge port to the discharge port;

[0012] An automatic jacking locking mechanism, comprising a base, a jacking assembly, a driving assembly and a supporting arm assembly, the base being installed on the rack, the jacking assembly comprising a jacking seat and a connecting rod mechanism, the connecting rod mechanism comprising a connecting rod one and a connecting rod two, the first end of the connecting rod one being in rotary connection with the base, the second end of the connecting rod one being in rotary connection with the first end of the connecting rod two, the jacking seat being in movable cooperation with the base and located above the connecting rod mechanism, the second end of the connecting rod one being in contact cooperation with the jacking seat; the driving assembly being arranged on the base, the driving assembly being in rotary connection with the second end of the connecting rod two, for driving the second end of the connecting rod two to move, so as to swing the connecting rod one between a first state and a second state, wherein in the first state, the second end of the connecting rod one is at the lowest position, the jacking seat is lowered to the lowest position, in the second state, the connecting rod one is perpendicular to the jacking seat and self-locked, the second end of the connecting rod one is at the highest position, and the jacking seat is raised to the highest position; the supporting arm assembly being arranged on the jacking seat, the supporting arm assembly being capable of rising and falling synchronously with the jacking seat, so as to raise the slag box in the slag box accommodating space and seal against the discharge port, or to lower the slag box and separate from the discharge port.

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

[0014] The rack panel is arranged on the top of the rack leg, and the rack leg is arranged on both sides of the rack panel; the slag box accommodating space is below the rack panel;

[0015] The discharge port is arranged on the rack panel, and a first sealing strip for sealing contact with the sealing surface of the slag box is arranged on the bottom periphery of the discharge port;

[0016] Front and rear limit blocks are arranged on the front and rear sides of the rack panel respectively, and the front and rear limit blocks are respectively used for positioning the front and rear of the slag box.

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

[0018] In some embodiments, the base is fixed to the rack leg, and the automatic lifting locking mechanism is arranged on both left and right sides of the rack panel.

[0019] In some embodiments, the driving assembly is a pneumatic cylinder, a hydraulic cylinder or an electric slide; the driving assembly is used to drive the second end of the second connecting rod to lift.

[0020] In some embodiments, the automatic lifting locking mechanism further comprises an insurance assembly, the insurance assembly comprises:

[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; the guide rod is provided with a first positioning structure;

[0022] A locking piece is arranged on the other one of the driving assembly and the lifting seat; the locking piece is provided with a guide rod hole through which the guide rod is movably penetrated; the hole wall of the guide rod hole is provided with a second positioning structure matched with the first positioning structure;

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

[0024] In some embodiments, one of the first positioning structure and the second positioning structure is an arc surface positioning block, the arc 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 arc surface positioning block is connected to the guide rod or the locking piece through an elastic piece;

[0025] The other one of the first positioning structure and the second positioning structure is an arc surface positioning groove matched with the arc surface positioning block.

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

[0027] In some embodiments, the lifting assembly further comprises a pressing head, the pressing head comprises a pin shaft and a shaft sleeve rotatably installed outside the pin shaft, the pin shaft is arranged at the second end of the first connecting rod, and the second end of the first connecting rod is in rolling contact with the lifting seat through the shaft sleeve.

[0028] In some embodiments, the jacking assembly further comprises a positioning guide mechanism, wherein the positioning guide mechanism comprises:

[0029] a horizontal guide groove arranged on the side wall of the jacking seat;

[0030] a guide protrusion arranged on the second end of the first connecting rod, and the guide protrusion is slidingly arranged in the horizontal guide groove, and when the first connecting rod is switched between the first state and the second state, the guide protrusion can slide along the horizontal guide groove to drive the jacking seat to synchronously rise and fall.

[0031] In some embodiments, the base comprises a beam seat and a pair of vertical arms symmetrically arranged 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 jacking seat and the supporting arm assembly are arranged above the beam seat, the first end of the first connecting rod is rotationally connected with the beam seat, and the two ends of at least one of the jacking seat and the supporting arm assembly are slidingly guided with the two vertical arms, respectively.

[0032] In some embodiments, the inner sides of the two vertical arms are each provided with a sliding groove; and the two ends of the supporting arm assembly are movably arranged in the sliding grooves of the two vertical arms, respectively.

[0033] In some embodiments, the supporting arm assembly comprises:

[0034] a supporting arm frame located above the jacking seat, the two ends of the supporting arm frame are each provided with a roller, and the rollers at the two ends of the supporting arm frame are rollingly arranged in the sliding grooves of the two vertical arms, respectively;

[0035] a supporting arm body arranged on one side of the supporting arm frame and facing the slag box containing space.

[0036] In some embodiments, the slag discharging guide mechanism comprises a slag discharging pipeline and a wear-resistant ceramic valve arranged on the slag discharging pipeline, one end of the slag discharging pipeline is used for being sealingly connected with the slag discharging port of the coal mill, and the other end of the slag discharging pipeline is sealingly connected with the slag discharging port.

[0037] The present application provides an automatic slag discharging system of a coal mill, which comprises a control cabinet and the automatic locking full-sealing slag discharging device of a coal mill as any one of the above, and the control cabinet is in communication connection with the slag discharging guide mechanism and the driving assembly.

[0038] In some embodiments, the automatic slag discharging system of the coal mill further comprises:

[0039] an automatic pressure relief device arranged on the rack and located at the slag discharging port, the automatic pressure relief device is used for relieving the pressure inside the slag box;

[0040] A spraying device is arranged on the frame and located at the discharge port, and is used for spraying and cooling inside the slag box.

[0041] A material level meter is arranged on the frame through a lifting mechanism, and a material level meter port is formed on the frame for the material level meter to penetrate, and the lifting mechanism is used to drive the material level meter to insert into or separate from the slag box through the material level meter port, 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 spraying device, the material level meter and the lifting mechanism are in communication connection with the control cabinet, and the control cabinet is at least used for:

[0043] controlling the lifting mechanism to drive the material level meter to lift;

[0044] When the material level meter detects that the material level in the slag box reaches the preset position, the automatic pressure relief device is controlled to relieve pressure, the valve in the discharge flow guide mechanism is controlled to be closed, and the automatic jacking locking mechanism is controlled to automatically switch the connecting rod one 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 jacking locking mechanism;

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

[0046] In some embodiments, the coal mill automatic slag discharging system further comprises a hydraulic trolley, which is used to transfer the slag box to the slag box containing space or move out of the slag box containing space.

[0047] In some embodiments, the coal mill automatic slag discharging system further comprises the slag box.

[0048] The present application has the following technical effects relative to the prior art:

[0049] The automatic locking and full-sealing slag discharging device of the coal mill disclosed by the application is characterized in that: an automatic jacking and locking mechanism is installed on the rack, and the jacking assembly of the automatic jacking and locking mechanism is designed in cooperation with the structure of the jacking seat, so that the automatic jacking, automatic locking, automatic unlocking and automatic lowering of the slag box can be realized only by the driving effect of the driving assembly, the whole operation process is stable, standard and reliable, the slag box is tightly sealed, and the problems of low work efficiency, non-standard operation of workers, sealing failure of the slag box, and short service life of the slag box locking device can be solved.

[0050] In some technical solutions disclosed by the application, the automatic jacking and locking mechanism is installed below the rack panel, and the supporting arm assembly is arranged at the uppermost position of the automatic jacking and locking mechanism, and in the first state and the second state, the supporting arm assembly is not higher than the upper surface of the rack panel, so that the space above the rack panel is not occupied by the automatic jacking and locking mechanism, the automatic jacking and locking mechanism does not interfere with the slag discharge pipe, and the interference between the slag discharge pipe and the slag box locking device caused by the limitation of the space of the use site can be avoided.

[0051] In some technical solutions disclosed by the application, the whole automatic jacking and locking mechanism is vertically installed and embedded between the supporting legs of the rack side, so that the problem of excessive space occupation of the rack periphery caused by the inclined installation of the traditional lifting and locking device is avoided.

[0052] The automatic slag discharging system of the coal mill disclosed by the application has the advantages of tight sealing, clean working environment, long service life of the equipment, low maintenance cost and low labor intensity of workers, because the automatic locking and full-sealing slag discharging device of the coal mill is adopted, the whole process of the stone coal discharging from the slag discharge port of the coal mill to the slag box is closed, and the whole slag discharging process is carried out in a completely closed environment, so that the problems of air leakage and dust flying during the slag discharging process caused by the poor sealing of the in-situ slag discharging system are fundamentally eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 FIG. 1 is a schematic diagram of an automatic locking and full-sealing slag discharge device of a coal mill with a rear-mounted material discharge guide mechanism according to one or more embodiments;

[0055] Figure 2 FIG. 2 is a front view of the automatic locking and full-sealing slag discharge device of the coal mill according to one or more embodiments; Figure 1

[0056] Figure 3 FIG. 3 is a left view of the automatic locking and full-sealing slag discharge device of the coal mill according to one or more embodiments; Figure 1

[0057] Figure 4 FIG. 4 is a schematic diagram of an automatic locking and full-sealing slag discharge device of a coal mill with a transversely-mounted material discharge guide mechanism according to one or more embodiments;

[0058] Figure 5 FIG. 5 is a front view of the automatic locking and full-sealing slag discharge device of the coal mill according to one or more embodiments; Figure 4

[0059] FIG. 6 is a left view of the automatic locking and full-sealing slag discharge device of the coal mill according to one or more embodiments; Figure 6 Figure 4 FIG. 7 is a schematic diagram of a rack structure according to one or more embodiments;

[0060] Figure 7 FIG. 8 is a first perspective view of an automatic jacking and locking mechanism according to one or more embodiments;

[0061] Figure 8 FIG. 9 is a second perspective view of the automatic jacking and locking mechanism according to one or more embodiments;

[0062] Figure 9 FIG. 10 is a side view of the automatic jacking and locking mechanism according to one or more embodiments;

[0063] Figure 10 FIG. 11 is a front view of the automatic jacking and locking mechanism according to one or more embodiments;

[0064] Figure 11 FIG. 12 is a schematic diagram of a linkage mechanism and a safety assembly in a first state according to one or more embodiments;

[0065] Figure 12

[0066] Figure 13 ​​​​Fig. 2 is a schematic view of the state of the linkage mechanism and safety assembly in the second state exhibited in one or more embodiments;

[0067] Figure 14 Fig. 3 is a schematic view of the partial cross-section of the automatic jacking locking mechanism in the second state exhibited in one or more embodiments;

[0068] Figure 15 Fig. 4 is a schematic view of the overall jacking assembly exhibited in one or more embodiments;

[0069] Figure 16 Fig. 5 is a schematic view of the automatic slag discharge system of the coal mill with the discharge guide mechanism behind exhibited in one or more embodiments;

[0070] Figure 17 Fig. 6 is a schematic view of the automatic slag discharge system of the coal mill with the discharge guide mechanism across exhibited in one or more embodiments.

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

[0072] 100, automatic locking full-sealing slag discharge device of the coal mill; 200, automatic slag discharge system of the coal mill; 300, control cabinet; 400, slag box; 500, slag discharge port of the coal mill;

[0073] 1, rack; 11, discharge port; 12, rack panel; 13, first rack leg; 14, second rack leg; 15, front limit block; 16, rear limit block; 17, first sealing strip; 18, level gauge port; 19, slag box accommodating space;

[0074] 2, discharge guide mechanism; 21, discharge pipeline; 22, feed hopper; 221, hopper partition; 23, first ceramic wear-resistant flashboard valve; 24, second pneumatic wear-resistant ceramic rotary slag discharge valve;

[0075] 3, automatic jacking locking mechanism; 31, base; 311, cross beam seat; 312, vertical arm; 3121, sliding groove; 313, linkage seat; 314, fixing plate; 315, reinforcing cross beam; 32, jacking assembly; 321, jacking seat; 322, linkage mechanism; 3221, first linkage; 3222, second linkage; 323, pressing head; 3231, pin shaft; 3232, shaft sleeve; 324, positioning guide mechanism; 3241, horizontal guide groove; 3242, guide protrusion; 33, driving assembly; 331, cylinder connecting seat; 34, supporting arm assembly; 341, supporting arm rack; 342, roller; 343, supporting arm body; 344, reinforcing cross bar; 35, safety 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, mounting hole; 3525, pre-tightening jackscrew;

[0076] 4. Automatic pressure relief device;

[0077] 5. Spraying device;

[0078] 6. Level gauge; 61. Second sealing strip;

[0079] 7. Lifting mechanism; 71. Lifting cylinder; 72. Cylinder bracket. Detailed Implementation

[0080] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0081] One of the objectives of this invention is to provide an automatic locking and fully sealed slag discharge device for coal mills, in order to solve the problems of the top-mounted fully sealed slag discharge system in the prior art, such as cumbersome operation steps for manually unlocking and locking the slag box, low work efficiency, unreliable sealing effect, and the problem that the hydraulic trolley lifting the slag box can easily lead to poor sealing of the slag box.

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

[0083] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0084] Example 1

[0085] like Figures 1-3 As shown, this embodiment provides an automatic locking fully sealed slag discharge device 100 for a coal mill, including a frame 1, a discharge guiding mechanism 2, and an automatic lifting and locking mechanism 3. A discharge port 11 is provided on the frame 1, and a slag box receiving space 19 is provided below the discharge port 11. The discharge guiding mechanism 2 is mounted on the frame 1 and is sealed to the discharge port 11. The discharge guiding mechanism 2 is used to transport the material discharged from the coal mill slag discharge port 500 to the discharge port 11. Figures 8-15As shown, the automatic jacking locking mechanism 3 comprises a base 31, a jacking assembly 32, a driving assembly 33 and a supporting arm assembly 34, the base 31 is installed on the frame 1; the jacking assembly 32 comprises a jacking seat 321 and a connecting rod mechanism 322, the connecting rod mechanism 322 comprises a connecting rod one 3221 and a connecting rod two 3222, the first end of the connecting rod one 3221 is rotationally connected with the base 31, the second end of the connecting rod one 3221 is rotationally connected with the first end of the connecting rod two 3222, the jacking seat 321 is movably matched with the base 31 and located above the connecting rod mechanism 322, the second end of the connecting rod one 3221 is in contact with the jacking seat 321; the driving assembly 33 is arranged on the base 31, the second end of the connecting rod two 3222 is rotationally connected with the driving assembly 33, the driving assembly 33 is used to drive the second end of the connecting rod two 3222 to move, so as to drive the connecting rod two 3222 to move and make the connecting rod one 3221 linkage, thereby making the connecting rod one 3221 swing between the first state and the second state with the first end hinge point as the center, wherein, in the first state, the connecting rod one 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°), the second end of the connecting rod one 3221 is at the lowest position, correspondingly, the jacking seat 321 also descends to the lowest position with the second end of the connecting rod one 3221, in the second state, the connecting rod one 3221 is perpendicular to the jacking seat 321 (i.e. perpendicular to the aforementioned horizontal plane) and self-locked, at this time, the second end of the connecting rod one 3221 is at the highest position, correspondingly, the jacking seat 321 is jacked to the highest position by the second end of the connecting rod one 3221, the driving assembly 33 drives the second end of the connecting rod two 3222 to reciprocate, so as to make the connecting rod one 3221 reciprocate between the first state and the second state, thereby completing the reciprocating jacking and falling of the jacking seat 321. The supporting arm assembly 34 is arranged on the jacking seat 321, the supporting arm assembly 34 can ascend and descend synchronously with the jacking seat 321, so as to jacking the slag tank 400 in the slag tank containing space 19 to make the slag tank 400 sealingly butt joint with the discharge port 11, or to lower the slag tank 400 in the slag tank containing space 19 to make the slag tank 400 separate from the discharge port 11. The above-mentioned automatic locking full-sealing slag discharging device 100 of the coal mill can realize the automatic jacking, automatic locking, automatic unlocking and automatic descending of the slag tank 400 only by the driving effect of the driving assembly 33 through the structural design of the connecting rod mechanism 322 in the jacking assembly 32 of the automatic jacking locking mechanism 3 cooperating with the jacking seat 321, the whole operation process is stable, standard and reliable, and the sealing of the slag tank 400 is tight, which can solve the problems in the prior art that the unlocking and locking of the slag tank all rely on manual multi-step operation, which not only has low working efficiency, but also can easily lead to the sealing failure of the slag tank and the reduction of the service life of the slag tank locking device due to the non-standard operation of the manual operation.In addition, the automatic jacking locking mechanism 3 is installed on the rack 1 through the base 31, and the lifting of the supporting arm assembly 34 can always be based on the rack panel 12, which fundamentally eliminates the phenomenon of poor sealing of the slag discharge system caused by the inclination of the hydraulic jacking slag tank due to uneven ground and the phenomenon of dust flying during the slag discharge process, and has the advantages of protecting the working environment, prolonging the service life of the equipment, saving maintenance costs, reducing the labor intensity of workers, etc.

[0086] In a feasible implementation manner, as shown in Figures 1-3 and Figure 7 , the rack 1 includes a rack panel 12 and rack legs, the rack 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 sealing contact with the sealing surface of the slag tank 400, and the left and right sides of the rack panel 12 are provided with rack legs; the front and rear sides of the rack panel 12 are respectively provided with front and rear limiting blocks 15 and 16, which are respectively used for front and rear positioning of the slag tank 400, so that the positioning is more accurate when the slag tank 400 is jacked, and the sealing effect is ensured. As shown in Figures 1-3 , the rack legs include first and second rack legs 13 and 14, the second rack leg 14 is sequentially hung on one side edge of the rack panel 12 from front to back, and the top of the first and second rack legs 13 and 14 is connected with the upper surface of the rack panel 12; the rack legs on the left and right sides of the rack panel 12 are symmetrically installed, thereby forming a rack 1 with four legs. As a preferred solution, the four rack legs of the rack 1 are respectively located at the four corner positions of the rack panel 12, and the slag tank containing space 19 is formed between the four rack legs below the rack panel 12.

[0087] In some embodiments, the first sealing strip 17 is preferably a temperature-resistant fluorine rubber sealing strip, which is inlaid and installed on the lower surface of the rack panel 12 and located at the outer periphery of the discharge port 11. This installation method does not require bolts or other fixings, and is convenient for disassembly, installation, replacement, etc. The first sealing strip 17 and the sealing surface of the slag tank 400 are mutually attached, which can seal the slag tank 400, and there is no air leakage or dust leakage, and the sealing effect is good.

[0088] Considering that in conventional hydraulic over-type fully-sealed slag discharge equipment, the slag tank locking device is located above the short sides of the mill rack panel, which occupies the upper space of the panel, so that the design and installation position of the slag discharge pipeline is fixed in the limited range of the long side of the rack panel, and cannot adapt to the compact discharge port space of some power plants, as Figures 1-3 , Figure 8 and Figure 9As shown, in some possible embodiments, the base 31 can be arranged below the rack panel 12, specifically: the base 31 can be connected and fixed on the rack legs, or can be connected and fixed on the lower surface of the rack panel 12; at the same time, the supporting arm assembly 34 is arranged at the uppermost of the automatic jacking locking mechanism 3, and in the first state and the second state, the supporting arm assembly 34 is not higher than the upper surface of the rack panel 12, so that the automatic jacking locking mechanism 3 can avoid occupying the space above the rack panel 12, the setting range of the slag discharge pipeline can be expanded, and the slag discharge pipeline can be flexibly adapted to the compact discharge port space of some power plants.

[0089] In some possible embodiments, preferably, the left and right sides of the rack panel 12 are each provided with the automatic jacking locking mechanism 3. And the automatic jacking locking mechanism 3 on each side is fixed between the rack legs on the same side through the base 31.

[0090] In a possible embodiment, the driving assembly 33 preferably adopts a telescopic driving assembly, which can be a telescopic driving assembly including but not limited to a pneumatic cylinder, a hydraulic cylinder, or an electric sliding table, and the like. Based on this, the driving assembly 33 is mainly used for driving the second end of the connecting rod two 3222 to lift, so as to make the connecting rod one 3221 swing between the first state and the second state.

[0091] Taking the case that the driving assembly 33 adopts a pneumatic cylinder, the automatic jacking locking mechanism 3 as a whole is a pneumatic jacking locking device. The pneumatic cylinder is arranged at the bottom of the base 31, the piston rod of the pneumatic cylinder is vertically upward, and the end of the piston rod of the pneumatic cylinder is fixedly installed with a pneumatic cylinder connecting seat 331 in a manner including but not limited to bolt fixing, key connection, mortise and tenon joint, and the like. The second end of the connecting rod two 3222 in the foregoing connecting rod mechanism 322 is rotationally connected with the pneumatic cylinder connecting seat 331, forming a rotating pair.

[0092] In a possible embodiment, the lower side of the jacking seat 321 of each group of automatic jacking locking mechanisms 3 can be provided with a plurality of connecting rod mechanisms 322, and the jacking seat 321 is driven to lift by the plurality of connecting rod mechanisms 322, so as to improve the reliability and stability of the lifting process of the jacking seat 321. Among them, the connecting rod two 3222 of all the connecting rod mechanisms 322 is connected with the same driving assembly 33, that is, all the connecting rod mechanisms 322 share one group of driving assemblies 33, or the connecting rod two 3222 of each group of connecting rod mechanisms 322 can be connected with one driving assembly 33. Based on this, the automatic jacking locking mechanism 3 as a whole is a pneumatic multi-connecting rod jacking locking device.

[0093] In one feasible implementation, each automatic lifting and locking mechanism 3 is equipped with a drive assembly 33. The piston rod end of the drive assembly 33 is provided with a cylinder connecting seat 331. All linkage mechanisms 322 are preferably evenly distributed around the outer periphery of the cylinder connecting seat 331, and the connecting rods 3222 of all linkage mechanisms 322 are rotatably connected to the cylinder connecting seat 331 via pins, forming a rotating pair. Based on this, the lifting and lowering of the piston rod of the drive assembly 33 can drive the synchronous movement of the connecting rods 3222 of all linkage mechanisms 322, thereby achieving the driving of all linkage mechanisms 322. By using a shared drive assembly 33 for multiple linkage mechanisms 322, the structure of the automatic lifting and locking mechanism 3 can be simplified while ensuring the normal operation of each linkage mechanism 322, improving the overall integration of the device, and reducing the production assembly process and operating costs of the device.

[0094] In one feasible implementation, two sets of linkage mechanisms 322 are preferably arranged below the lifting seat 321, and the two sets of linkage mechanisms 322 are arranged in a front-to-back manner with the cylinder connecting seat 331 as the center (here, "front and back" refers to the front and rear sides of the slag box 400, and "left and right" refers to the left and right sides of the slag box 400, wherein, as Figure 2 and Figure 5 As shown, the slag box 400 is positioned such that one side of the observation window is the front side of the slag box 400. (It is symmetrically arranged; specifically, the two sets of linkage mechanisms 322 are arranged 180° apart, centered on the piston rod axis of the drive assembly 33.) Figures 11-15 As shown. Based on this, the automatic lifting and locking mechanism 3 is a pneumatic double-link lifting and locking device.

[0095] like Figures 11-15 As shown, considering that directly utilizing the second end of the first link 3221 of each linkage mechanism 322 to slide and engage with the lower surface of the lifting seat 321 can achieve the lifting and lowering of the lifting seat 321 by the first link 3221, there may be issues with uneven sliding or severe wear. This not only makes the first link 3221 and the lifting seat 321 prone to damage and have 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 embodiments, a pressure head 323 can also be provided in the lifting assembly 32. The pressure head 323 includes a pin 3231 and a bushing 3232 rotatably mounted outside the pin 3231. The pin 3231 passes through the second end of the connecting rod 3221. The second end of the connecting rod 3221 rolls into contact with the lower surface of the lifting seat 321 through the bushing 3232, thereby reducing wear and improving the smoothness between the lifting assembly 32 and the lifting seat 321, thus improving the reliability and stability of the device.

[0096] In an embodiment, the shaft sleeve 3232 can be a standard roller on the market, which is rotatably connected with the end of the pin shaft 3231 through a bearing. Specifically, the inner ring of the bearing is fixedly connected with the pin shaft 3231 by a key, and the shaft sleeve 3232 is sleeved outside the outer ring of the bearing and is fixedly connected with the outer ring of the bearing by a key.

[0097] In an embodiment, in order to increase the contact area between the pressure head 323 and the lower surface of the lifting seat 321, thereby improving the support stability of the pressure head 323 to the lifting seat 321, a plurality of the aforementioned shaft sleeves 3232 can be arranged on the pin shaft 3231 of the same pressure head 323. Taking the example of arranging two aforementioned shaft sleeves 3232 on the pin shaft 3231 of the same pressure head 323, the pin shaft 3231 penetrates the second end of the connecting rod one 3221, and the two ends of the pin shaft 3231 are respectively provided with a shaft sleeve 3232, and the rotation axes of the two shaft sleeves 3232 are coaxial with the pin shaft 3231.

[0098] In an embodiment, in order to simplify the structure of the connecting rod mechanism 322 and improve its use performance, it is preferred that the rotary pair between the connecting rod one 3221 and the connecting rod two 3222 is realized through the pin shaft 3231 of the aforementioned pressure head 323. Specifically, the pin shaft 3231 simultaneously penetrates the second end of the connecting rod one 3221 and the first end of the connecting rod two 3222, and the second end of the connecting rod one 3221 and the first end of the connecting rod two 3222 are rotatably connected with the pin shaft 3231, forming a rotary pair, and at the same time, the two ends of the pin shaft 3231 are respectively rotatably installed with a aforementioned 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 a plurality of groups of connecting rod mechanisms 322 are arranged in the automatic lifting and locking mechanism 3, the mounting mode of the pressure head 323 on each group of connecting rod mechanisms 322 is the same. And the size specifications of each pressure head 323 are also the same.

[0100] In an embodiment, a positioning guide mechanism 324 is further arranged 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 lifting, and preventing the relative position deviation between the lifting seat 321 and the pressure head 323 during lifting, thereby affecting the use performance of the automatic lifting and locking mechanism 3. Specifically, as shown in 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 formed in the side wall of the jacking seat 321, and the guide protrusion 3242 is arranged at the second end of the connecting rod 3221. The guide protrusion 3242 is slidably arranged in the horizontal guide groove 3241. When the connecting rod 3221 switches between the first state and the second state, the guide protrusion 3242 can slide along the horizontal guide groove 3241 to drive the jacking seat 321 to synchronously ascend or descend.

[0101] In an embodiment, the jacking seat 321 is preferably provided with side walls on the left and right sides, and the horizontal guide grooves 3241 are formed in the left and right side walls. The second end of each connecting rod 3221 is provided with a guide protrusion 3242 on each side, which is slidably arranged in the horizontal guide groove 3241 of the left or right side wall of the jacking seat 321.

[0102] In an embodiment, the positioning guide mechanism 324 is arranged between each set of connecting rod mechanisms 322 and the jacking seat 321. For a single set of connecting rod mechanisms 322, the horizontal guide grooves 3241 on the left and right sides are symmetrically arranged and have the same stroke. Generally, when the connecting rod 3221 is in the first state, the guide protrusion 3242 is slidably arranged at one end of the horizontal guide groove 3241, and when the connecting rod 3221 is in the second state, the guide protrusion 3242 is slidably arranged at the other end of the horizontal guide groove 3241. The limiting effect of the two ends of the horizontal guide groove 3241 on the guide protrusion 3242 can improve the stability of the support of the connecting rod mechanism 322 on the jacking seat 321 in the first state and the second state. In particular, in the second state, the connecting rod 3221 is vertically self-locked, and the limiting effect of the horizontal guide groove 3241 on the guide protrusion 3242 is conducive to maintaining the vertical self-locking state of the connecting rod 3221, thereby improving the sealing durability and stability of the device on the slag box 400.

[0103] In an embodiment, 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 protruding structure specially arranged on both sides of the end of the connecting rod 3221. The protruding structure can be integrally formed with the connecting rod 3221 or assembled on the connecting rod 3221 by welding or bolt connection. The specific arrangement position can be slightly lower than the pin shaft 3231. In addition, the guide protrusion 3242 can also be formed by the end of the pin shaft 3231, that is, the two ends of the pin shaft 3231 respectively extend out of the two shaft sleeves 3232, so that the pin shaft protruding parts are formed at the two ends of the two shaft sleeves 3232 in the pressing head 323. The pin shaft protruding parts can also serve as the guide protrusions 3242 to slidably cooperate with the horizontal guide grooves 3241. In order to improve the compactness of the device, it is preferred to use the structure in which the two ends of the pin shaft 3231 serve as the guide protrusions 3242.

[0104] In one feasible implementation, in order to reduce or avoid wear on both ends of the pin 3231 by the horizontal guide groove 3241, additional bushings can be fitted on the protruding parts of the pin at both ends of the pin 3231 to protect the pin 3231.

[0105] Taking the structure of two sets of linkage mechanisms 322 set below 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 them, two horizontal guide grooves 3241 that are opposite each other on the left and right are a group, which are slidably installed with the guide protrusions 3242 on the left and right sides of the corresponding linkage mechanism 322.

[0106] To further improve the lifting and tightening effect of the automatic lifting and locking mechanism 3 on the slag box 400, such as Figures 11-15 As shown, the automatic lifting and locking mechanism 3 is also equipped with a safety component 35. The safety component 35 includes a guide rod 351 and a locking member 352. The guide rod 351 is disposed on one of the cylinder connecting seat 331 and the lifting seat 321, and the guide rod 351 is parallel to the lifting direction of the piston rod in the drive assembly 33. The guide rod 351 is provided with a positioning structure one. The locking member 352 is disposed on the other of the cylinder connecting seat 331 and the lifting seat 321. The locking member 352 is provided with a guide rod hole 3521 through which the guide rod 351 moves. The hole wall of the guide rod hole 3521 is provided with a positioning structure two that is adapted to the aforementioned positioning structure one. When the connecting rod 3221 is in the first state, the aforementioned positioning structure 1 and positioning structure 2 are separated from each other. When the connecting rod 3221 is in the second state, the aforementioned positioning structure 1 and positioning structure 2 are locked in place. When it is necessary to switch the connecting rod 3221 back to the first state, the positioning structure 1 and positioning structure 2 can be unlocked manually or automatically to ensure the normal extension and retraction of the piston rod in the drive assembly 33.

[0107] In one possible implementation, one of the first positioning structure and the second positioning structure is a positioning block, which is telescopically embedded in a rod wall of the guide rod 351 or a hole wall of the guide hole 3521, and is connected to the guide rod 351 or the locking member 352 through a connecting member; the other of the first positioning structure and the second positioning structure is a positioning groove matched with the positioning block. The positioning block can be a spherical block, a cylindrical block or a prismatic block, and the shape profile of the positioning groove is matched with that of the positioning block. If the connecting member is a connecting rod or a threaded rod, the connecting rod or the threaded rod is fastened to the locking member 352 through a mechanical structure, and thus the connecting rod or the threaded rod needs to be manually loosened or tightened to adjust the relative position relationship between the positioning block and the positioning groove to meet the form state of the connecting rod 3221. In this design, the safety assembly 35 needs to be manually assisted to be locked and unlocked. If the connecting member is a spring, the relative position relationship between the positioning block and the positioning groove can be automatically adjusted by using the elasticity of the spring and the relative action relationship between the positioning groove and the positioning block. In this design, the safety assembly 35 can be automatically locked and unlocked, so that the entire operation process of the automatic jacking and locking mechanism 3 does not need manual participation, and the automatic jacking and locking mechanism 3 can be ensured to be automatically operated on the basis of improving the self-locking performance of the connecting rod 3221.

[0108] In one possible implementation, the positioning block is preferably connected to the guide rod 351 or the locking member 352 by using a spring to realize automatic locking and unlocking of the safety assembly 35. Meanwhile, considering that a cylindrical or prismatic positioning block cannot be automatically separated from the corresponding positioning groove, the positioning block is preferably an arc-surface positioning block, and the positioning groove is an arc-surface positioning groove. The arc-surface positioning block and the arc-surface positioning groove can be used to realize sliding locking and sliding separation and unlocking of the positioning block and the positioning groove.

[0109] In one possible implementation, the guide rod 351 is fixed to the cylinder connecting seat 331 in a manner including but not limited to threaded connection, interference insertion and welding, and the guide rod 351 is coaxial with the piston rod of the driving assembly 33. Correspondingly, the locking member 352 is arranged above the jacking seat 321, and the jacking seat 321 has a guide hole two through which the guide rod 351 movably penetrates, and the guide hole two is coaxially arranged with the guide hole 3521.

[0110] In one possible implementation, the locking member 352 is a locking block structure, which is fixed to the jacking seat 321 in a manner including but not limited to bolt connection and welding.

[0111] In a feasible implementation, the second positioning structure is an arc positioning block 3522, and the locking member 352 is provided with a mounting hole 3524 that is in communication with the guide rod hole 3521, and the arc positioning block 3522 is telescopically embedded in the mounting hole 3524. The arc positioning block 3522 is connected to or abuts against the end of the mounting hole 3524 through an elastic member 3523, and when no guide rod 351 passes through the guide rod hole 3521, the arc convex surface of the arc positioning block 3522 can be pushed out into the guide rod hole 3521 by the elastic member 3523. The arc positioning block 3522 can be a hemispherical positioning block or a spherical positioning block. Correspondingly, the first positioning structure is an arc positioning groove 3511 that is adapted to the arc positioning block 3522, and the arc positioning groove 3511 is provided on the outer wall of the guide rod 351. When the first connecting rod 3221 is in the first state, the guide rod 351 can be located below the guide rod hole 3521 or pass through the guide rod hole 3521 (i.e., the guide rod 351 always passes through the guide rod hole 3521). As the first 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. During this process, due to the extrusion of the rod wall of the guide rod 351 on the arc positioning block 3522, the arc positioning block 3522 is retracted into the mounting hole 3524, and the elastic member 3523 is compressed at this time. When the first connecting rod 3221 switches to the second state, the arc positioning groove 3511 is moved to the mounting hole 3524 in the guide rod hole 3521. At this time, due to the concave shape of the arc positioning groove 3511 relative to the rod wall of the guide rod 351, the extrusion of the arc positioning block 3522 disappears, and the arc positioning block 3522 can be pushed out into the guide rod hole 3521 under the elastic release of the elastic member 3523 and embedded in the arc positioning groove 3511. The safety assembly 35 is completed automatically locked, realizing the double self-locking of the automatic jacking and locking mechanism 3, and the piston rod no longer operates. Conversely, when the slag box 400 needs to be lowered, the guide rod 351 is lowered under the pulling action of the piston rod, the arc positioning groove 3511 is lowered and smoothly separated from the arc positioning block 3522 in an arc sliding manner, and then the arc positioning block 3522 is extruded and retracted into the mounting hole 3524 by the rod wall of the guide rod 351, waiting for the next time the slag box 400 is jacked up to be released again. Such reciprocation can realize the reciprocating switching of the safety assembly 35 between the automatic unlocking and automatic locking states.

[0112] In a feasible implementation, in order to improve the safety effect of the safety assembly 35, a plurality of arc positioning blocks 3522 are arranged on the outer periphery of the guide rod hole 3521, and the arc positioning groove 3511 is correspondingly arranged one-to-one with the arc positioning block 3522, or the guide rod 351 is provided with an arc positioning groove 3511 that is in communication throughout the circle, and the arc positioning groove 3511 can be simultaneously adapted and locked with a plurality of arc positioning blocks 3522.

[0113] In an embodiment, the outer periphery of the guide rod hole 3521 is preferably provided with two arc-shaped positioning blocks 3522, which can ensure the locking effect.

[0114] In an embodiment, the mounting hole 3524 is arranged in one-to-one correspondence with the arc-shaped positioning block 3522. The first end of each mounting hole 3524 is in communication with the guide rod hole 3521, and the second end of each mounting hole 3524 is sealed to provide a supporting force for the end of the elastic member 3523 in the mounting hole 3524. Specifically, the second end of each mounting hole 3524 can be in the form of a blind hole to achieve sealing. In addition, the second end of each mounting hole 3524 can be in communication, and an internal threaded hole is arranged at the second end of each mounting hole 3524, so that the second end of the mounting hole 3524 can be sealed by arranging a pre-tightening jack 3525 in the internal threaded hole. Since the pre-tightening jack 3525 is threadedly connected with the internal threaded hole, the pre-tightening jack 3525 can be adjusted by screwing in or out to adjust the elastic force of the elastic member 3523, and further adjust the clamping force of the arc-shaped positioning block 3522 on the arc-shaped positioning groove. The pre-tightening jack 3525 is arranged in a manner that is not only convenient to adjust the clamping force, but also facilitates the disassembly and maintenance of the elastic member 3523 and the arc-shaped positioning block 3522 in the mounting hole 3524.

[0115] In an embodiment, as shown in Figures 8-15 The base 31 can have 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 jacking seat 321, and the supporting arm assembly 34 are arranged above the beam seat 311, and the first end of the connecting rod one 3221 is rotationally connected with the beam seat 311. In order to improve the lifting stability and reliability of the supporting arm assembly 34, the two ends of at least one of the jacking seat 321 and the supporting arm assembly 34 are preferably slidably guided with the two vertical arms 312.

[0116] In an embodiment, a connecting rod seat 313 is mounted on the beam seat 311 by welding or bolt connection, and the first end of the connecting rod one 3221 is rotationally connected with the connecting rod seat 313 by a pin shaft, forming a rotational pair.

[0117] In an embodiment, only the supporting arm assembly 34 and the two vertical arms 312 are slidably guided, and the supporting arm assembly 34 and the vertical arm 312 are preferably in the form of inner and outer nesting to achieve sliding fit. Specifically, as shown in Figure 1 and Figure 7As shown, the inner side of the two vertical arms 312 is provided with a sliding groove 3121; the two ends of the supporting arm assembly 34 are movably embedded in the sliding groove 3121 of the two vertical arms 312. Based on the sliding fit relationship between the supporting arm assembly 34 and the two vertical arms 312, the supporting arm rack 341 can be directly placed on the jacking seat 321, but the two are not connected; in addition, in order to improve the structural stability, the bottom of the supporting arm rack 341 can also be connected with the jacking seat 321 by means of bolt connection and the like.

[0118] In a feasible implementation mode, as shown in Figure 8 and Figure 11 , the supporting arm assembly 34 includes a supporting arm rack 341 and a supporting arm body 343, wherein the supporting arm rack 341 is located above the jacking seat 321, both ends of the supporting arm rack 341 are provided with a roller 342, and both ends of the roller 342 are rollingly installed in the sliding groove 3121 of the two vertical arms 312; the outer wall of the roller 342 is in rolling contact with the front and rear groove walls of the sliding groove 3121, which can not only support the supporting arm rack 341 to keep it upright, but also improve the sliding smoothness between the supporting arm rack 341 and the sliding groove 3121. The supporting arm body 343 is arranged on one side of the supporting arm rack 341, and when the entire automatic jacking locking mechanism 3 is installed and used, the supporting 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, thereby achieving the effect of supporting and lifting the slag box 400 during the lifting of the slag box 400.

[0119] In a feasible implementation mode, as shown in Figure 9 , the supporting arm body 343 is a vertical plate structure, and a plurality of supporting arm bodies 343 can be arranged on the supporting arm rack 341 at the same time, and the plurality of supporting arm bodies 343 can provide multi-point support for the slag box 400, thereby improving the support stability of the supporting arm assembly 34 to the slag box 400 during the lifting or lowering of the slag box 400. In order to further strengthen the structural stability of the supporting arm assembly 34, all the supporting arm bodies 343 on the supporting arm rack 341 can be connected and assembled into one body by a reinforcing cross bar 344, so as to prevent a single supporting arm body 343 from being bent and deformed during use.

[0120] In a feasible implementation mode, a baffle is arranged at the top of the sliding groove 3121 to limit the uppermost position of the supporting arm assembly 34, thereby preventing the supporting arm assembly 34 from moving excessively along the sliding groove 3121 during lifting, and protecting the supporting arm assembly 34 from sliding off.

[0121] In a feasible implementation, the base 31 can be fixedly connected with the two rack legs through the outer sides of the two vertical arms 312, and the specific fixing mode can be detachable connection mode such as bolt connection. The outer sides of the bottom portions of the two vertical arms 312 are further provided with fixing plates 314, which can be positioned and matched with the rack legs to guide and position the installation of the base 31 between the two rack legs. In addition, the fixing plates 314 can also be fixed with the rack legs through bolt connection or other modes to further reinforce the base 31.

[0122] In a feasible implementation, in order to improve the overall structural stability of the base 31, the middle and top portions between the two vertical arms 312 are further connected with reinforcing cross beams 315.

[0123] In a feasible implementation, the above material discharging and guiding mechanism 2, as shown in Figures 1-3 , includes a material discharging pipeline 21 and wear-resistant ceramic valves arranged on the material discharging pipeline 21. One end of the material discharging pipeline 21 is used for sealing and connecting with the mill slag discharge port 500, and the other end of the material discharging pipeline 21 is sealingly connected with the material discharging port 11. In actual application, multiple wear-resistant ceramic valves are generally arranged on the material discharging pipeline 21 along the material conveying direction, such as two, three or four valves. As a preferred scheme, two wear-resistant ceramic valves can be arranged, which are a ceramic wear-resistant flashboard valve 23 and a second pneumatic wear-resistant ceramic rotary slag valve 24 along the material conveying direction. The second pneumatic wear-resistant ceramic rotary slag valve 24 is generally connected with the material discharging port on the rack 1 through a flange pipeline. The sealing pairs of the ceramic wear-resistant flashboard valve 23 and the second pneumatic wear-resistant ceramic rotary slag valve 24 are preferably made of zirconia composite ceramic. The two valves are installed in series, and the ceramic wear-resistant flashboard valve 23 is normally in an open state, which does not affect the operation of the entire equipment. When the second pneumatic wear-resistant ceramic rotary slag valve 24 fails, the ceramic wear-resistant flashboard valve 23 can be immediately used, which greatly increases the safety and reliability of the equipment operation. Both valves are ceramic wear-resistant valves, because the ceramic sealing surface is more wear-resistant, has high sealing surface smoothness, and has more airtight sealing, so that the valve sealing surface is not easy to wear and has a longer service life.

[0124] In a feasible implementation, the material discharging pipeline 21 is generally a cylindrical pipe, which is arranged obliquely above the rack panel 12. The bottom end of the material discharging pipeline 21 is sealingly connected with the material discharging port 11, and the top end of the material discharging pipeline 21 is generally provided with a feeding hopper 22. In order to promote material diversion, a hopper partition plate 221 is further arranged in the feeding hopper 22, which can divide the feeding hopper 22 into two spaces, both of which are in communication with the material discharging pipeline 21.

[0125] In a feasible implementation, as shown in Figures 1-3As shown, the discharge pipeline 21 is located on one side of the long side of the rack panel 12, and is inclined towards the rear and upper part of the slag box 400, thereby forming a kind of discharge flow guide mechanism rear-mounted automatic locking full-sealed slag discharge device of the coal mill.

[0126] Next, taking the automatic jacking locking mechanism 3 driven by pneumatic double connecting rod as an example, and the pressure head 323, the positioning guide mechanism 324 and the safety assembly 35 arranged in the automatic jacking locking mechanism 3, the working principle of the above-mentioned automatic locking full-sealed slag discharge device 100 of the coal mill is specifically described:

[0127] As shown in Figures 1-3 , the automatic jacking locking mechanism 3 is generally vertically installed on both short sides of the rack 1, and the automatic jacking locking mechanism 3 is located between the two rack legs on the short side of the rack 1. After installation, the entire automatic jacking 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 one 3221 is in the first state as shown in Figure 12 , at this time, the arm body 343 is at the lowest position, and after the empty slag box 400 is transported to the slag box containing space 19 below the rack panel 12, the arm body 343 is located below the top sealing surface edge of the slag box 400.

[0129] The piston rod of the driving assembly 33, i.e. the cylinder, moves upward, the jacking seat 321 is jacked vertically upward under the jacking of the pressure head 323 and the driving of the guide protrusion 3242, and drives the arm body 343 to jack; after the arm body 343 contacts the top sealing surface edge of the slag box 400, the connecting rod one 3221 has not reached the second state, the jacking seat 321 continues to jack and drives the arm body 343 to jack the slag box 400, until the connecting rod one 3221 reaches the second state as shown in Figure 13 , the arm body 4 jacks the slag box 400 to tightly contact the first sealing strip 17 of the lower surface of the rack panel 12. At this time, in the double connecting rod mechanism 322, the connecting rod one 3221 is vertically upward, the movement direction is the same as the extension direction of the piston rod of the cylinder, is at the dead angle point, and the connecting rod mechanism 322 is in the self-locking state, thereby realizing the self-locking of the automatic jacking locking mechanism 3. Even if the system is powered off and the gas source is cut off, the vertically upward connecting rod one 3221 will not automatically fall due to the gas leakage of the cylinder, and the jacking sealing state of the slag box 400 can be maintained.

[0130] When the slag box 400 needs to be lowered when the material in the slag box 400 is full, the cylinder receives a lowering signal, the cylinder is controlled through a reversing electromagnetic valve to realize the switching of the gas source direction, and then the piston rod of the cylinder moves downward and strongly pulls the connecting rod one 3221 to rotate downward until the connecting rod one 3221 switches to the third state as shown in Figure 12 .The first state is shown. In this process, the support arm assembly 34 and the lifting seat 321 are pressed on the pressure head 323 by gravity and keep contact with the pressure head 323, so that the support arm assembly 34 and the lifting seat 321 slowly descend vertically under the driving of the pressure head 323 and the guide protrusion 3242. After the slag box 400 falls to the ground or the hydraulic unloading, the support arm assembly 34 and the lifting seat 321 continue to descend until the connecting rod one 3221 switches to the second state as shown. Figure 12 The first state is shown.

[0131] In the process of switching the connecting rod one 3221 from the first state to the second state, the locking piece 352 makes the arc surface positioning block 3522 press tightly on the guide rod 351 through the pre-tightening jack 3525. When 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, and the double self-locking of the automatic lifting locking mechanism 3 is realized in cooperation with the self-locking of the connecting rod one 3221 in the connecting rod mechanism 322, which can effectively avoid the device from descending due to gravity after power and gas are cut off.

[0132] Therefore, the automatic lifting locking mechanism 3 of the automatic locking full-sealing slag discharging device 100 is provided through the structure of the connecting rod mechanism 322 in the lifting assembly 32 and the lifting seat 321. Only the linear extension and contraction driving action of the driving assembly 33 is needed to realize the automatic lifting, automatic locking, automatic unlocking and automatic descending of the slag box 400. The whole running process is stable, standard and reliable, the sealing of the slag box is tight, and the problems such as low work efficiency, non-standard operation of workers, sealing failure of the slag box, and reduction of service life of the slag box locking device can be solved. In addition, the automatic lifting locking mechanism 3 is suspendedly installed on the rack 1 through the base 31, and the lifting of the support arm assembly 34 can always be based on the rack panel 12, which fundamentally eliminates the phenomenon of tight sealing of the slag discharging system and the phenomenon of dust flying in the slag discharging process caused by the ground unevenness and the hydraulic lifting deflection, and has the advantages of protecting the working environment, prolonging the service life of the equipment, saving the maintenance cost, reducing the labor intensity of workers, etc.

[0133] The automatic lifting locking mechanism 3 is designed based on pneumatic lifting and has the characteristics of automatic locking, tight sealing, long service life of the equipment, high work efficiency, etc. It fundamentally changes the status that the traditional lifting locking is completed in multiple steps and completely depends on the standard operation of workers, and breaks through the installation position and structure limitation of the traditional lifting locking device. It not only solves the problems of sealing leakage caused by non-standard sealing of the slag box and dust flying in the slag discharging process, but also solves the influence of the installation position of the lifting locking device on the overall layout of the slag discharging equipment. The specific beneficial effects are as follows:

[0134] (I) The wear-resistant ceramic valve is installed on the discharge pipeline 21 of the discharge guide mechanism 2, which can fundamentally change the phenomenon of the traditional discharge system valve, such as poor sealing, easy wear, easy internal leakage, external leakage, and further air leakage and coal dust flying during the discharge process.

[0135] (II) In the traditional coal mill discharge system, the hydraulic trolley is placed on the ground below the slag box to lift the slag box, thereby realizing complete sealing of the slag box and the rack panel. However, in some power plants, the ground is uneven, and after the hydraulic trolley lifts the slag box, the slag box and the rack panel will be in contact at an angle, making it difficult to achieve manual locking. In this scheme, the base is installed on the coal mill rack, and the arm assembly can always drive the slag box to move up and down based on the rack panel, avoiding the sealing angle formed by the hydraulic trolley moving up and down based on the ground, and fundamentally eliminating the phenomenon of poor sealing of the discharge system and dust flying during the discharge process caused by uneven ground and hydraulic lifting deviation. This scheme has the advantages of protecting the working environment, prolonging the service life of the 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 changes due to human factors. In this scheme, the structure of the connecting rod mechanism in the lifting assembly cooperates with the structure of the lifting seat, and only the linear extension and contraction driving action of the driving assembly is needed to achieve automatic lifting, automatic locking, automatic unlocking, and automatic lowering of the slag box. The entire running process is stable, standardized, and reliable, and the slag box is tightly sealed. This scheme not only solves the problem of multi-step manual operation for unlocking and locking the slag box in existing technology, which is low in work efficiency and prone to sealing failure, but also eliminates the disadvantages caused by relying on human subjective factors.

[0137] (IV) In conventional hydraulic over-type fully sealed discharge equipment, the slag box locking device is located above the short sides of the coal mill rack panel, which occupies the upper space of the panel, thereby fixing the discharge pipe in the limited range of the long side of the rack panel, and the discharge pipe cannot adapt to the compact discharge port space of some power plants. In this scheme, the arm assembly is arranged at the uppermost part of the automatic lifting and locking mechanism, and in the first and second states, the arm assembly is not higher than the upper surface of the rack panel in the coal mill rack, which avoids the occupation of the space above the rack panel by the automatic lifting and locking mechanism, and avoids the interference between the discharge pipe and the slag box locking device caused by the limitation of the space of the use site. This scheme maximizes its use scenarios, making the coal mill over-type fully sealed discharge equipment suitable for any site arrangement.

[0138] (V) The entire automatic lifting and locking mechanism is vertically installed and embedded in the inner side of the coal mill rack, avoiding the problem of inclined installation of the traditional lifting and locking device, which occupies too much space around the coal mill rack.

[0139] (VI) On both sides of the rack 1, a set of automatic lifting locking mechanism is arranged, which can ensure the complete sealing butt joint of the slag box 400 and the discharge guide mechanism 2 in the slag discharge device, and prevent the uncertainty of manual locking from causing the unreliability of the system sealing. The automatic lifting locking mechanism 3 is based on the pneumatic double connecting rod structure to realize self-locking. Even if the gas source is disconnected and the equipment is powered off, it will not automatically fall with the exhaust of the pneumatic actuator, which ensures the sealing reliability of the slag discharge device.

[0140] Example 2

[0141] As shown in Figures 4-6 , the present embodiment provides a kind of automatic locking full sealing slag discharge device 100 of coal mill, and the difference between it and embodiment 1 only lies in that discharge pipeline 21 is located in the short side of rack panel 12, and is inclined to the left upper side of slag box 400, to form a kind of automatic locking full sealing slag discharge device 100 of coal mill with discharge guide mechanism transverse.

[0142] The above-mentioned automatic locking full sealing slag discharge device 100 of coal mill with discharge guide mechanism transverse breaks through the design limitation that discharge pipeline can only be arranged in the limited range of long side of rack panel due to the interference of slag box locking device, and can be flexibly adapted to the compact discharge port space of part of power plant. The rest of the setting form, working principle and working effect of the automatic locking full sealing slag discharge device 100 of coal mill of the present embodiment are the same as embodiment 1, and will not be repeated here.

[0143] Example 3

[0144] As shown in Figure 16 , the present embodiment provides a kind of automatic slag discharge system 200 of coal mill, including control cabinet 300 and the automatic locking full sealing slag discharge device 100 of coal mill of embodiment 1, control cabinet 300 is connected with all wear-resistant ceramic valves on discharge pipeline 21, drive assembly 33 is connected.

[0145] Example 4

[0146] As shown in Figure 16As shown, the embodiment provides an automatic slag discharging system 200 of the coal mill, which is based on the embodiment 3 and further provided with an automatic pressure relief device 4, a spraying device 5 and a material level meter 6. The automatic pressure relief device 4 is arranged on the rack 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 relief valve on the market, which is mainly used for pressure relief inside the slag box 400 and dust removal of the filter screen, so as to achieve the purpose of clean environment. The spraying device 5 is arranged on the rack 1 and located at the discharge port 11. The spraying device 5 is used for spraying and cooling inside the slag box 400, so as to avoid the occurrence of spontaneous combustion of the stone coal in the box. The material level meter 6 is arranged on the rack 1 through the lifting mechanism 7. The material level meter port 18 is opened on the rack panel 12 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 separate from the slag box 400 through the material level meter port 18. 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, as shown in Figure 7 and Figure 16 The lifting cylinder 71 is arranged on the upper surface of the rack panel 12 through the cylinder support 72. Specifically, the bottom of the lifting cylinder 71 is connected with the top of the cylinder support 72. The piston rod of the lifting cylinder 71 faces downward and is connected with the material level meter 6. The piston rod of the lifting cylinder 71 vertically extends and retracts, which can drive the material level meter 6 to lift or lower.

[0147] In a feasible implementation, the automatic pressure relief device 4, the spraying device 5 and the material level meter 6 are located at the outer periphery of the discharge port 11. The automatic pressure relief device 4 and the spraying device 5 are fixed on the rack panel 12 and penetrate the rack panel 12 (a sealing ring can be arranged at the penetration position for sealing). The diameter of the box opening of the slag box 400 is greater than the diameter of the discharge port 11, so that the automatic pressure relief device 4 and the spraying device 5 can be located inside the slag box 400 after the box opening of the slag box 400 is sealed and connected with the discharge port 11. After the slag box 400 is sealed and connected with the discharge port 11, the material level meter port 18 is communicated with the box opening of the slag box 400. The material level meter 6 is arranged above the material level meter port 18 through the lifting mechanism 7. During the sealed slag discharging process, the material level meter 6 is driven by the lifting mechanism 7 to lower. When the bottom end of the material level meter 6 extends into the inside of the slag box 400, the material level meter 6 is also sealed and connected with the material level meter port 18 through the second sealing strip 61 arranged thereon, so as to prevent air leakage and powder leakage at the material level meter port 18 during the slag discharging process. When the material level meter 6 extends into the inside of the slag box 400 through the material level meter port 18 under the driving of the lifting cylinder 71 during the slag discharging of the coal mill, the material level height change is detected. When the stone coal in the slag box 400 reaches a certain height, the material level detection device sends an audible and light alarm signal. The second sealing strip 61 is generally preferably a temperature-resistant fluorine rubber sealing strip and is embeddedly installed in the end face of the material level meter 6. This installation method does not need bolts and other fasteners and is convenient for disassembly, installation and replacement.

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

[0149] When the coal mill is normally operated, the slag box 400 is pushed into the slag box containing space 19 directly below the rack panel 12 by using the hydraulic trolley, and then the automatic lifting locking mechanism 3 lifts the slag box 400, so that the top sealing surface of the slag box 400 and the first sealing strip 17 of the rack panel 12 are in contact and pressed to seal, and the device is automatically locked after the locking. The sealing force will not change with the fluctuation of the air source pressure. During the lifting of the slag box 400, the slag box 400 can be accurately positioned under the positioning action of the front and rear limit blocks 15 and 16.

[0150] When the coal mill needs to discharge slag, the second pneumatic wear-resistant ceramic rotary slag discharge valve "open" button on the panel of the operation control cabinet 300 is operated. First, the lifting cylinder 71 drives the material level meter 6 to move downward, the probe of the material level meter 6 extends into the slag box 400 through the material level meter port 18, and the second sealing strip 61 at the end surface of the material level meter 6 interacts with the rack panel 12 and is sealed. Then, the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 is opened. (Normally, the first ceramic wear-resistant plug valve 23 is always open. Only when the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 fails, the first ceramic wear-resistant plug valve 23 is used. Otherwise, it is only a standby valve.), The stone coal freely falls into the slag box 400 directly below the rack 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 pipeline 21.

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

[0152] The second pneumatic wear-resistant ceramic rotary slag discharge valve "close" button on the panel of the operation control cabinet 300 is operated. First, the second pneumatic wear-resistant ceramic rotary slag discharge valve 24 is closed, the automatic pressure relief device 4 is automatically relieved, and the positive pressure in the stone discharge system is relieved. Then, the lifting cylinder 71 automatically lifts the material level meter 6, and the bottom end surface of the material level meter 6 is separated from the rack panel 12.

[0153] Finally, the automatic lifting locking mechanism 3 automatically releases the locking and lowers the slag box 400. Then, the slag box 400 is pulled out by using the hydraulic trolley, and the slag box 400 is transported to the dumping point by using the rotary forklift. Thus, the whole process of the stone coal closed discharge is realized.

[0154] In the process of normal discharging of stone coal by the coal mill, when the temperature of the stone coal in the slag tank 400 is too high, the stone coal can be self-ignited. The operation control cabinet 300 can automatically start the spraying device 5 to spray water into the slag tank 400 to prevent the stone coal from being self-ignited.

[0155] Based on the above-mentioned automatic slag discharging system 200 of the coal mill, the whole process of discharging the stone coal from the slag discharging port 500 of the coal mill to the slag tank 400 is realized in a closed manner, and the whole slag discharging process is carried out in a completely closed environment, which fundamentally eliminates the phenomenon of air leakage and dust flying in the slag discharging process caused by the poor sealing of the in-situ slag discharging system, and has the advantages of tight sealing, clean working environment, prolonged service life of the equipment, saved maintenance cost, and reduced labor intensity of workers. Moreover, the whole slag discharging process is automatically operated, and the degree of automation is high, and the reliability and working efficiency are greatly improved.

[0156] Embodiment 5

[0157] As shown in Figure 17 , the embodiment provides an automatic slag discharging system 200 of a coal mill, which is different from that of embodiment 4 only in that the automatic locking and full sealing slag discharging device 100 of the coal mill adopts the automatic locking and full sealing slag discharging device of the coal mill with the transversely arranged slag discharging and flow guiding mechanism disclosed in embodiment 2, and the rest is the same as that of embodiment 4, which will not be described here.

[0158] Embodiment 6

[0159] The embodiment provides an automatic slag discharging system 200 of a coal mill, which is further provided with a hydraulic trolley on the basis of embodiment 5 or 4, which is used to transfer the slag tank 400 to the slag tank containing space 19, or after the slag tank 400 is full, the slag tank 400 is removed from the slag tank containing space 19.

[0160] It should be noted that the front-rear direction and the left-right direction are only defined for the convenience of those skilled in the art to understand the scheme, and should not be construed as a limitation on the present application.

[0161] The principles and implementation modes of the present application are described by using specific examples in the present application, and the above embodiment is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the specification should not be understood as a limitation on the present application.

Claims

1. A full seal and automatic locking slag discharge device for a coal mill, characterized in that, The utility model relates to a kind of coal mill slagging device, including: Frame (1), which is provided with a discharge port (11) thereon, and a slag box accommodating space (19) is provided below the discharge port (11); A discharge guide mechanism (2) is provided on the frame (1) and is in sealing connection with the discharge port (11), and the discharge guide mechanism (2) is used to transport the material discharged from the coal mill slagging port (500) to the discharge port (11); An automatic jacking locking mechanism (3) includes a base (31), a jacking assembly (32), a driving assembly (33) and a support arm assembly (34), the base (31) is installed on the frame (1), the jacking assembly (32) includes a jacking seat (321) and a connecting rod mechanism (322), the connecting rod mechanism (322) includes a connecting rod one (3221) and a connecting rod two (3222), the first end of the connecting rod one (3221) is rotatably connected with the base (31), the second end of the connecting rod one (3221) is rotatably connected with the first end of the connecting rod two (3222), the jacking seat (321) is movably connected with the base (31) and is located above the connecting rod mechanism (322), and the second end of the connecting rod one (3221) is in contact with the jacking seat (321); 2. The automatic locking and full sealing and slagging device of the coal mill according to claim 1, characterized in that, The driving assembly (33) is provided on the base (31), the second end of the connecting rod two (3222) is rotatably connected with the driving assembly (33), and the driving assembly (33) is used to drive the second end of the connecting rod two (3222) to move, so that the second end of the connecting rod one (3221) swings between the first state and the second state, wherein, in the first state, the second end of the connecting rod one (3221) is at the lowest position, the jacking seat (321) is lowered to the lowest position, in the second state, the connecting rod one (3221) is perpendicular to the jacking seat (321) and is self-locked, the second end of the connecting rod one (3221) is at the highest position, and the jacking seat (321) is raised to the highest position; The support arm assembly (34) is provided on the jacking seat (321), and the support arm assembly (34) can be raised and lowered synchronously with the jacking seat (321), so that the slag box (400) in the slag box accommodating space (19) is raised and sealingly connected with the discharge port (11), or is lowered and separated from the discharge port (11). The frame (1) includes a frame panel (12) and a frame leg, wherein: The frame panel (12) is provided on the top of the frame leg, and the left and right sides of the frame panel (12) are provided with the frame leg; the frame panel (12) below is the slag box accommodating space (19); The discharge port (11) is opened on the frame panel (12), and the bottom outer periphery of the discharge port (11) is provided with a first sealing strip (17) for sealing contact with the sealing surface of the slag box (400); The front and rear sides of the frame panel (12) are respectively provided with a front limiting block (15) and a rear limiting block (16), and the front limiting block (15) and the rear limiting block (16) are respectively used for positioning the front and rear of the slag box (400).

3. The automatic locking and full sealing and slagging device of the 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 uppermost of the automatic jacking locking mechanism (3), and the support arm assembly (34) is not higher than the upper surface of the rack panel (12) in the first state and the second state.

4. The automatic locking and full sealing and slagging device of the coal mill according to claim 3, characterized in that, The base (31) is fixed to the rack leg, and the rack panel (12) is provided with the automatic jacking locking mechanism (3) on the left and right sides.

5. The automatic locking and full sealing and slag-discharging device of the coal mill according to any one of claims 1 to 4, characterized in that, The driving assembly (33) is a gas cylinder, a hydraulic cylinder or an electric sliding table; the driving assembly (33) is used for driving the second end of the connecting rod two (3222) to lift.

6. The automatic locking and full sealing and slagging device of the coal mill according to claim 5, characterized in that, The automatic jacking locking mechanism (3) further comprises an insurance assembly (35), the insurance assembly (35) comprises: A guide rod (351) is arranged on one of the driving assembly (33) and the jacking seat (321), and the guide rod (351) is parallel to the lifting direction of the driving assembly (33), and a positioning structure one is arranged on the guide rod (351); a locking piece (352) is arranged on the other one of the driving assembly (33) and the jacking seat (321), and a guide rod hole (3521) is arranged on the locking piece (352) for the guide rod (351) to movably penetrate, and a positioning structure two matched with the positioning structure one is arranged on the hole wall of the guide rod hole (3521); in the first state, the positioning structure one and the positioning structure two are separated from each other, and in the second state, the positioning structure one and the positioning structure two are positioned and locked. One of the positioning structure one and the positioning structure two is an arc surface positioning block (3522), the arc 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 arc surface positioning block (3522) is connected with the guide rod (351) or the locking piece (352) through an elastic piece (3523); The other one of the positioning structure one and the positioning structure two is an arc surface positioning groove (3511) matched with the arc surface positioning block (3522).

7. The automatic locking and full sealing and slagging device of the coal mill according to claim 6, characterized in that, In the automatic jacking locking mechanism (3), two groups of the connecting rod mechanisms (322) are arranged below the jacking seat (321), and the two groups of the connecting rod mechanisms (322) are symmetrically arranged, and the connecting rod two (3222) of the two groups of the connecting rod mechanisms (322) is connected to the same driving assembly (33). The jacking assembly (32) further comprises a pressing head (323), the pressing head (323) comprises a pin shaft (3231) and a shaft sleeve (3232) rotatably installed outside the pin shaft (3231), the pin shaft (3231) is arranged at the second end of the connecting rod one (3221), and the second end of the connecting rod one (3221) is in rolling contact with the jacking seat (321) through the shaft sleeve (3232).

8. The automatic locking and full sealing and slag-discharging device of the coal mill according to any one of claims 1-4, characterized in that, The jacking assembly (32) further comprises a positioning guide mechanism (324), the positioning guide mechanism (324) comprises:

9. The automatic locking and full sealing and slag-discharging device of the coal mill according to any one of claims 1-4, characterized in that, ​ 10. The automatic locking and full sealing and slagging device of the coal mill according to claim 9, characterized in that, ​ A horizontal guide groove (3241) is arranged on the side wall of the lifting seat (321); A guide protrusion (3242) is arranged on the second end of the first connecting rod (3221), and the guide protrusion (3242) is slidingly arranged in the horizontal guide groove (3241). When the first connecting rod (3221) is switched 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 full sealing and slag-discharging device of the coal mill according to any one of claims 1-4, 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). The first end of the first connecting rod (3221) is rotationally connected with the beam seat (311). The two ends of at least one of the lifting seat (321) and the supporting arm assembly (34) are slidingly guided with the two vertical arms (312) respectively.

12. The automatic locking full seal and de-sludging device of the 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 movably arranged in the sliding grooves (3121) of the two vertical arms (312) respectively.

13. The automatic locking full seal and de-sludging device of the coal mill according to claim 12, characterized in that, The supporting arm assembly (34) comprises: A supporting arm rack (341) is arranged above the lifting seat (321). The two ends of the supporting arm rack (341) are both provided with rollers (342). The rollers (342) at the two ends of the supporting arm rack (341) are rollingly arranged in the sliding grooves (3121) of the two vertical arms (312) respectively. A supporting arm body (343) is arranged on one side of the supporting arm rack (341) and faces the slag box containing space (19).

14. The automatic locking and full sealing and slag-discharging device of the coal mill according to any one of claims 1-4, characterized in that, The slag discharging guide mechanism (2) comprises a slag discharging pipeline (21) and a wear-resistant ceramic valve arranged on the slag discharging pipeline (21). One end of the slag discharging pipeline (21) is used for being sealingly connected with the slag discharging port (500) of the coal mill. The other end of the slag discharging pipeline (21) is sealingly connected with the slag discharging port (11).

15. An automatic coal mill slagging system, characterized in that, The coal mill automatic locking full-sealing slag discharging device (100) comprises a control cabinet (300) and the coal mill automatic locking full-sealing slag discharging device (100) as claimed in any one of claims 1 to 14. The control cabinet (300) is in communication connection with the slag discharging guide mechanism (2) and the driving assembly (33).

16. The coal mill automatic de-slaging system in accordance with claim 15, wherein, Further comprising: An automatic pressure relief device (4) is arranged on the rack (1) and located at the slag discharging port (11). The automatic pressure relief device (4) is used for relieving the pressure inside the slag box (400); A spraying device (5) is arranged on the rack (1) and located at the slag discharging port (11). The spraying device (5) is used for spraying and cooling the inside of the slag box (400); A material level meter (6) is arranged on the rack (1) through a lifting mechanism (7), a material level meter port (18) is arranged on the rack (1) 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 separate 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 a preset position; The automatic pressure relief device (4), the spraying device (5), the material level meter (6) and the lifting mechanism (7) are in communication connection with 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 lift; when the material level meter (6) detects that the material level in the slag box (400) reaches the preset position, controlling the automatic pressure relief device (4) to relieve pressure and the valve in the discharge flow guide mechanism (2) to close, and controlling the automatic jacking locking mechanism (3) to automatically switch the connecting rod one (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 jacking locking mechanism (3); when the material temperature in the slag box (400) reaches the spontaneous combustion temperature, controlling the spraying device (5) to spray water into the slag box (400) to cool, so as to prevent the material from spontaneous combustion.

17. The coal mill automatic de-slaging system in accordance with claim 15, wherein, It also includes a hydraulic trolley, which is used to transfer the slag box (400) to the slag box containing space (19), or move out of the slag box containing space (19).

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