Coke removal and gunning device for furnace covers

Abstract

The present application belongs to the field of steel plant cleaning equipment, and provides a furnace cover slag scraping and gunning device, which comprises a trolley and a slag scraping device, a gunning device and an induction assembly arranged on the trolley; the slag scraping device comprises a slag scraping mechanism and a slag scraping rotation and lifting mechanism for controlling the rotation and lifting of the slag scraping mechanism, the slag scraping mechanism comprises two oppositely arranged slag scraping pieces and an opening control mechanism for controlling the distance between the two slag scraping pieces of each pair; the gunning device comprises a gunning machine, a lifting feeding mechanism and a universal nozzle; the gunning machine is in communication with the feeding port of the lifting feeding mechanism, and the universal nozzle is in communication with the discharging port of the lifting feeding mechanism; the induction assembly is arranged on the trolley, the induction assembly is in communication connection with the slag scraping device, the induction assembly can sense the driving position of the trolley, and is used for controlling the slag scraping device to perform the slag scraping work when the trolley drives to the position below the furnace cover and controlling the gunning device to perform the gunning work when the trolley drives to the position below the furnace cover. The device can effectively avoid the personnel operation risk caused by manual slag cleaning, and can significantly improve the work efficiency compared with manual slag cleaning.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cleaning equipment in steelmaking plant, in particular, relates to a slag scraping and gunning device for furnace cover. BACKGROUND

[0002] The function of the furnace cover is to keep the molten steel warm and protect the environment from dust overflow and temperature drop. During refining, the furnace cover needs to cover the ladle, but it is exposed to high temperature and dust erosion. The high temperature promotes the sintering of the refractory material of the furnace cover, causing cracks and falling off of the refractory material. At the same time, a large amount of molten steel splashes and adheres to the inner side of the water cooling pipe of the furnace cover. If the furnace cover is not cleaned of the steel slag and the refractory material is not sprayed in time, the adhered steel slag in the furnace cover during the refining process will cause the water cooling pipe to be punctured by the electric arc and leak. Then the furnace needs to be stopped for repair welding, which not only seriously affects the production rhythm of steelmaking, but also may cause the interruption of the later process such as continuous casting. Therefore, improving the function accuracy of the furnace cover has a positive significance for ensuring the continuity of production, improving the efficiency of steelmaking and reducing costs.

[0003] In the existing operation process, the furnace cover is frequently accumulated with slag due to the influence of factors such as high temperature and dust erosion during production, falling off of the refractory material and splashing of molten steel during refining, which causes corrosion and puncture of the water cooling pipe. Since the furnace cover is suspended in the air, if it cannot be handled in time, the more slag accumulated in the furnace cover will cause the electric arc to be caused by the slag accumulated in the furnace cover during the refining process, causing the water cooling pipe to be punctured by the electric arc. The main working steps include: notifying relevant maintenance personnel to the scene to investigate the situation, stopping power, hanging a sign, and lowering the furnace cover to the bottom position. The furnace cover is inspected and slag is cleaned through the furnace table observation position. The slag needs to be cleaned by stopping the furnace to build a grating for slag cleaning. After the slag is cleaned, the furnace cover is sprayed with refractory material by the spraying personnel. After the whole process is completed, the steelmaking is resumed.

[0004] The above cleaning process has the following problems:

[0005] 1. When the refractory is sprayed under the furnace cover, the hanging slag that is not completely cleaned by manual slag cleaning may fall off and injure the operator during the stress of spraying;

[0006] 2. When the furnace cover is cleaned, two or more people need to cooperate. The on-site working environment is noisy, and the operators are prone to make mistakes. Unclear or incorrect instructions may lead to misoperation (there is a safety hazard);

[0007] 3. When the slag is cleaned, a grating is built for manual slag cleaning, which is time-consuming and inefficient, affecting production. SUMMARY

[0008] The purpose of the present application includes providing a furnace cover slag scraping and gunning device to improve at least one problem mentioned in the background art.

[0009] Embodiments of the present application can be implemented as follows:

[0010] In a first aspect, the present application provides a furnace cover slagging and gunning device, comprising a trolley and a slagging device, a gunning device and an induction assembly arranged on the trolley;

[0011] The slagging device comprises a slagging mechanism and a slagging rotation and lifting mechanism for controlling the rotation and lifting of the slagging mechanism, the slagging mechanism comprising two oppositely arranged slagging blades and an opening control mechanism for controlling the distance between the two slagging blades of each pair;

[0012] The gunning device comprises a gunning machine, a lifting feeding mechanism and a universal spray head; the gunning machine is in communication with the feeding port of the lifting feeding mechanism, and the universal spray head is in communication with the discharge port of the lifting feeding mechanism;

[0013] The induction assembly is arranged on the trolley, the induction assembly is in communication connection with the slagging device, the induction assembly can sense the driving position of the trolley, and is used for controlling the slagging device to perform the slagging work when the trolley drives to the position below the furnace cover, and controlling the gunning device to perform the gunning work when the trolley drives to the position below the furnace cover.

[0014] In an optional embodiment, the opening control mechanism comprises a bidirectional hydraulic cylinder, and the opposite two piston rods of the bidirectional hydraulic cylinder are respectively connected with the two oppositely arranged slagging blades.

[0015] In an optional embodiment, the opening control mechanism comprises an opening hydraulic control system, the opening hydraulic control system comprising two first hydraulic pipelines, a first three-position four-way electromagnetic reversing valve with a "Y" type center function, two first throttling valves and two first hydraulic control check valves;

[0016] One hydraulic cavity of the bidirectional hydraulic cylinder is communicated with the first three-position four-way electromagnetic reversing valve through one of the first hydraulic pipelines, and the other hydraulic cavity of the bidirectional hydraulic cylinder is communicated with the first three-position four-way electromagnetic reversing valve through the other first hydraulic pipeline, and a first hydraulic control check valve and a first throttling valve are arranged in sequence on each first hydraulic pipeline from the first three-position four-way electromagnetic reversing valve to the bidirectional hydraulic cylinder.

[0017] In an optional embodiment, the opening hydraulic control system further comprises an overflow valve connected with the two first hydraulic pipelines and arranged between the first throttling valve and the bidirectional hydraulic cylinder.

[0018] In an optional embodiment, the slagging mechanism further comprises a rotating table, the rotating table is provided with a guide groove, and the two oppositely arranged slagging blades are located in the guide groove.

[0019] In an optional embodiment, the furnace cover slagging and gunning device further comprises a slagging auxiliary device, the slagging auxiliary device comprising a slag receiving disc, at least one slag discharge pipe and a slag hopper matched with the number of the slag discharge pipes.

[0020] The slag receiving plate is located below the slag scraping structure; each slag bucket is arranged on the trolley, and the inlet of each slag outlet pipe is connected with the bottom of the slag receiving plate, and the outlet of the slag outlet pipe is located directly above the corresponding slag bucket.

[0021] In an optional embodiment, the slag scraping rotary lifting mechanism comprises a rotating assembly and a lifting assembly;

[0022] The lifting assembly comprises a lifting rod and a first hydraulic cylinder, and the lifting rod is connected with the piston rod of the first hydraulic cylinder;

[0023] Optionally, the rotating assembly comprises a movable tooth and a fixed tooth plate,

[0024] The piston rod of the first hydraulic cylinder is a hollow piston rod, the lifting rod extends into the hollow piston rod from the rodless cavity of the first hydraulic cylinder, the inner wall of the hollow piston rod is provided with a bearing, and the bearing is connected with the outer wall of the lifting rod;

[0025] The movable tooth is arranged at the lower end of the lifting rod of the first hydraulic cylinder, one end of the movable tooth is rotationally connected with the end of the lifting rod, a spring is arranged between the other end of the movable tooth and the lifting rod, the downward face of the movable tooth is a first action tooth face, the fixed tooth plate has a plurality of second action tooth faces, the plurality of second action tooth faces are circularly arranged about the center of the fixed tooth plate, the fixed tooth plate is located directly below the movable tooth, the fixed tooth plate is coaxially arranged with the lifting rod, and each second action tooth plate is obliquely arranged, and the top of each second action tooth face is located directly below the first action tooth face;

[0026] The first action tooth face matches each second action tooth face, as the lifting rod moves downward, the first action tooth face of the movable tooth contacts one second action tooth face of the fixed tooth plate, as the movable tooth continues to move downward, the movable tooth drives the lifting rod to rotate under the oblique guiding action of the second action tooth face, and the lifting rod continues to rotate under the rotation trend brought by the movable tooth during the downward movement of the movable tooth when the lifting rod moves upward;

[0027] Alternatively, the rotating assembly comprises a first tooth plate and a second tooth plate, the first tooth plate; the piston rod of the first hydraulic cylinder is a hollow piston rod, the lifting rod extends into the hollow piston rod from the rodless cavity of the first hydraulic cylinder, the inner wall of the hollow piston rod is provided with a bearing, and the bearing is connected with the outer wall of the lifting rod; the first tooth plate is arranged at the lower end of the lifting rod of the first hydraulic cylinder, a plurality of second tooth plates are fixedly arranged on the trolley and located directly below the first tooth plate, the face of the first tooth plate facing the second tooth plate is provided with a plurality of arrayed first teeth with inclined faces, and the face of the second tooth plate facing the first tooth plate is provided with a plurality of arrayed second teeth matched with the first teeth; as the lifting rod moves downward, the inclined face of the first tooth matches the second tooth, and the second tooth plate rotates under the guiding action of the second tooth, the second tooth plate drives the lifting rod to rotate, and then the lifting rod rises, and the lifting rod continues to rotate for a period of time under the action of inertia;

[0028] Optionally, the slag scraping rotary lifting mechanism further comprises a hydraulic slip ring arranged at the upper end of the first hydraulic cylinder, the lifting rod passes through the hydraulic slip ring, and an oil pipe of the bidirectional hydraulic cylinder is fixed on the lifting rod and communicates with a hydraulic pipeline of the hydraulic slip ring.

[0029] In an optional embodiment, the slag scraping rotary lifting mechanism comprises a first lifting hydraulic control system for controlling the liquid inlet amount of the first hydraulic cylinder.

[0030] The first lifting hydraulic control system comprises a second hydraulic pipeline in communication with the rod cavity and the rodless cavity, a second three-position four-way electromagnetic reversing valve with a "Y" type neutral function, two second throttles, and two second hydraulic control check valves.

[0031] One hydraulic cavity of the first hydraulic cylinder is in communication with the second three-position four-way electromagnetic reversing valve through a second hydraulic pipeline, and the other hydraulic cavity of the first hydraulic cylinder is in communication with the second three-position four-way electromagnetic reversing valve through another second hydraulic pipeline. A second hydraulic control check valve and a second throttle are arranged in sequence on each second hydraulic pipeline from the second three-position four-way electromagnetic reversing valve to the first hydraulic cylinder.

[0032] In an optional embodiment, the lifting feeding mechanism comprises a second hydraulic cylinder, a lifting feeding rod, and a spiral feeding rod.

[0033] The spiral feeding rod is arranged on the trolley through a feeding connector, and the spiral feeding rod comprises a rod body and a rotating connector. The inner wall of the rod body is provided with a plurality of parallel spiral grooves from top to bottom, and the rotating connector is circumferentially provided with a plurality of protrusions corresponding to the number of spiral grooves. The rotating connector is arranged in the rod body, and the plurality of protrusions are correspondingly clamped into the plurality of spiral grooves. The lower end of the lifting feeding rod is inserted into the rod body and connected with the spiral connector.

[0034] The piston rod of the second hydraulic cylinder is of a hollow structure, the lifting feeding rod passes through the second hydraulic cylinder and the piston rod of the second hydraulic cylinder, the piston rod and the lifting feeding rod are connected through a bearing, the upward and downward movement of the piston drives the upward and downward movement of the lifting feeding rod, and the lifting feeding rod is in communication with the universal nozzle.

[0035] Optionally, the lifting feeding mechanism comprises a second lifting hydraulic control system for controlling the liquid inlet amount of the second hydraulic cylinder.

[0036] The second lifting hydraulic control system comprises two third hydraulic pipelines in communication with the rodless cavity and the rod cavity, a third three-position four-way electromagnetic reversing valve with a "Y" type neutral function, two third throttles, and two third hydraulic control check valves.

[0037] One hydraulic cavity of the second hydraulic cylinder is communicated with a third three-position four-way electromagnetic reversing valve through one third hydraulic pipeline, and the other hydraulic cavity of the second hydraulic cylinder is communicated with the third three-position four-way electromagnetic reversing valve through another third hydraulic pipeline, and a third hydraulic control check valve and a third throttle valve are sequentially arranged on each third hydraulic pipeline from the third three-position four-way electromagnetic reversing valve to the second hydraulic cylinder.

[0038] In the optional embodiment, the furnace cover slagging and gunning device further comprises a track arranged below the furnace cover, the track having a first sensing site at the most end and a second sensing site at the lowermost of the furnace cover;

[0039] The sensing assembly comprises a first sensor, a second sensor and a third sensor;

[0040] When the trolley runs below the furnace cover, the first sensor senses the first sensing site and the second sensor senses the second sensing site, the sensing assembly sends a signal to the slagging device, and the slagging device starts to work; when the trolley runs to the second sensor senses the first sensing site and the third sensor senses the second sensing site, the sensing assembly sends a signal to the gunning device, and the gunning device starts to work.

[0041] The beneficial effects of the embodiments of the present application include, for example:

[0042] The furnace cover slagging and gunning device obtained through the above design can realize the slagging and gunning work of the furnace cover, and the device replaces manual operation, without the need for workers to personally perform the slagging and gunning work on the furnace cover. The device can effectively avoid the personnel operation risk caused by manual slagging, and can significantly improve the work efficiency compared with manual slagging. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0044] Figure 1 The structural schematic diagram of the furnace cover slagging and gunning device provided by the embodiments of the present application;

[0045] Figure 2 The top view of the rotating table;

[0046] Figure 3 The structural schematic diagram of the first hydraulic cylinder;

[0047] Figure 4 The structural schematic diagram of the movable tooth arranged at the end of the lifting rod;

[0048] Figure 5 Fig. 3 is a structural schematic diagram of the fixed gear disc;

[0049] Figure 6 Fig. 4 is a structural schematic diagram of the internal structure of the spiral feeding rod;

[0050] Figure 7 Fig. 5 is a hydraulic control diagram of the furnace cover slag scraping and gunning device of the oil supply pipeline;

[0051] Figure 8 Fig. 6 is a structural schematic diagram of the rotating assembly of another embodiment;

[0052] Figure 9 Fig. 7 is a bottom view of the first gear disc in the rotating assembly of another embodiment;

[0053] Figure 10 Fig. 8 is a top view of the second gear disc in the rotating assembly of another embodiment;

[0054] Figure 11 Fig. 9 is a structural schematic diagram of the rotating assembly of yet another embodiment.

[0055] Fig. 1: 0 - furnace cover; 1 - cooling water pipe; 2 - steel slag; 3 - slag scraping sheet; 4 - bidirectional hydraulic cylinder; 5 - rotating table; 6 - lifting rod; 7 - slag receiving disc; 8 - hydraulic slip ring; 9 - first hydraulic cylinder; 10 - fixed gear disc; 11 - movable tooth; 12 - slag bucket; 13 - track; 14 - trolley; 15 - first sensor; 16 - slag outlet pipe; 17 - universal nozzle; 18 - second hydraulic cylinder; 19 - protrusion; 20 - spiral feeding rod; 21 - rotating joint; 22 - oil block; 23 - oil tank; 24 - gunning machine; 25 - second three-position four-way electromagnetic reversing valve; 26 - second hydraulic control check valve; 27 - second throttle valve; 28 - third three-position four-way electromagnetic reversing valve; 29 - third hydraulic control check valve; 30 - third throttle valve; 31 - first three-position four-way electromagnetic reversing valve; 32 - first hydraulic control check valve; 33 - first throttle valve; 34 - overflow valve; 37 - guide groove; 38 - third sensor; 39 - spiral groove; 43 - lifting feeding rod; 44 - first sensor; 45 - spiral joint; 46 - bearing; 48 - hollow piston rod; 50 - first acting tooth surface; 51 - second acting tooth surface; 52 - spring; 61 - first gear disc; 611 - first tooth; 62 - second gear disc; 621 - second tooth; 71 - motor; 72 - first shifting plate; 73 - second shifting plate. DETAILED DESCRIPTION

[0056] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0058] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation description, and cannot be understood as indicating or implying relative importance.

[0061] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0062] Please refer to Figure 1 As shown in the drawings, the embodiments of the present application provide a furnace cover slagging and gunning device, which comprises a trolley 14 and a slagging device, a gunning device and an induction assembly arranged on the trolley 14;

[0063] The slagging device comprises a slagging mechanism and a slagging rotating and lifting mechanism for controlling the rotation and lifting of the slagging mechanism, the slagging mechanism comprises two oppositely arranged slagging blades 3 and an opening control mechanism for controlling the distance between the two slagging blades 3 of each pair;

[0064] The gunning device comprises a gunning machine 24, a lifting feeding mechanism and a universal nozzle 17; the gunning machine 24 is in communication with the feeding port of the lifting feeding mechanism, and the universal nozzle 17 is in communication with the discharging port of the lifting feeding mechanism;

[0065] The sensing component is installed on the trolley 14 and is connected to the slag scraping device. The sensing component can sense the driving position of the trolley 14 and control the slag scraping device to perform slag scraping when the trolley 14 travels to the bottom of the furnace cover 0. It can also control the spraying device to perform spraying when the trolley 14 travels to the bottom of the furnace cover 0.

[0066] The furnace cover slag scraping and spraying device provided by the present invention, when the slag 2 indicated by the cooling water pipe 1 of the furnace cover 0 needs to be cleaned, moves the trolley 14 to below the furnace cover 0. When the sensing component detects that the slag scraping device has reached directly below the furnace cover 0, the trolley 14 stops moving and controls the slag scraping rotation and lifting mechanism to raise and rotate the slag scraping device. During this process, the slag scraping blades 3 are adjusted in a timely manner by the start-up control mechanism to match the size of the furnace cover 0 at the current position, thereby achieving better slag scraping. After the slag scraping is completed, the trolley 14 moves forward. When the sensing component detects that the spraying device has reached directly below the furnace cover 0, the trolley 14 stops moving and controls the spraying device to perform upper and lower refractory material spraying work inside the furnace cover 0.

[0067] Therefore, the furnace cover scraping and spraying device provided in this embodiment of the invention can realize the scraping and spraying of slag on the furnace cover 0. This device replaces manual operation, eliminating the need for personnel to personally perform scraping and spraying operations on the furnace cover 0. It can effectively avoid the personnel operation risks caused by manual slag cleaning and significantly improve work efficiency compared to manual slag cleaning.

[0068] like Figure 1 and Figure 2 As shown, the opening control mechanism further includes a bidirectional hydraulic cylinder 4, and the two opposing piston rods of the bidirectional hydraulic cylinder 4 are respectively connected to two opposing scraper blades 3.

[0069] Simultaneously, adding oil to the hydraulic chamber within the bidirectional hydraulic cylinder 4 increases the distance between the two scraper blades 3. Stopping the oil injection causes the piston in the elastic mechanism within the bidirectional hydraulic cylinder 4 to retract, thus reducing the distance between the two scraper blades 3. When the scraper blades 3 rise to the inner end face of the furnace cover 0, the opening of the scraper blades 3 is initially minimized by the action of the spring 52 in the bidirectional hydraulic cylinder 4, and then the scraping operation begins. The cleaning process of the furnace cover 0 expands outward from the center of the furnace cover 0. The opening of the scraper blades 3 is adjusted according to a time setting until it reaches its maximum, at which point the scraping operation is complete.

[0070] Furthermore, the slag scraping mechanism also includes a rotary table 5, within which a guide groove 37 is provided, and two opposing slag scraper blades 3 are located within the guide groove 37. The guide groove 37 serves to limit the movement of the slag scraper blades 3, improving stability during the opening adjustment process.

[0071] Furthermore, such as Figure 7As shown, the opening degree control mechanism comprises an opening degree hydraulic control system, which comprises two first hydraulic pipelines, a first three-position four-way electromagnetic reversing valve 31 with a neutral function in the shape of "Y", two first throttles 33, and two first hydraulic control check valves 32.

[0072] One hydraulic cavity of the bidirectional hydraulic cylinder 4 is communicated with the first three-position four-way electromagnetic reversing valve 31 through one first hydraulic pipeline, and the other hydraulic cavity of the bidirectional hydraulic cylinder 9 is communicated with the first three-position four-way electromagnetic reversing valve 31 through the other first hydraulic pipeline. A first hydraulic control check valve 32 and a first throttle 33 are arranged in sequence on each first hydraulic pipeline from the first three-position four-way electromagnetic reversing valve 31 to the bidirectional hydraulic cylinder 4.

[0073] The throttle controls the speed of oil inlet to ensure that the opening degree adjustment of the two sides of the slag scraping sheet 3 runs smoothly; the hydraulic control check valve can realize the start and stop of the hydraulic cylinder piston rod at any position in the stroke range; in the case of power failure of the electromagnetic reversing valve, the oil is automatically returned to the oil tank 23, at this time, the external force is disabled, and the hydraulic cylinder return spring 52 in it will press the piston rod back to the starting position, and the opening degree of the slag scraping sheet 3 is the smallest.

[0074] Further, the opening degree hydraulic control system further comprises an overflow valve 34 connected with the two first hydraulic pipelines and arranged between the first throttle and the bidirectional hydraulic cylinder 9.

[0075] The arrangement of the overflow valve 34 can realize the opening of the overflow and the overload protection when the pressure is excessive during the opening degree adjustment.

[0076] Further, as shown in Figure 1 , the furnace cover slag scraping and gunning device further comprises a slag scraping auxiliary device, which comprises a slag receiving disc 7, at least one slag outlet pipe 16, and a slag hopper 12 matched with the number of the slag outlet pipes 16.

[0077] The slag receiving disc 7 is located below the slag scraping structure; each slag hopper 12 is arranged on the trolley 14, and the inlet of each slag outlet pipe 16 is connected with the bottom of the slag receiving disc 7, and the outlet of the slag outlet pipe 16 is located directly above the corresponding slag hopper 12.

[0078] The steel slag 2 cleaned by the slag scraping sheet 3 falls into the slag receiving disc 7, is collected in the slag hopper 12 through the slag outlet pipe 16, and is convenient for centralized treatment.

[0079] Further, as shown in Figure 1 , 3 , 4 and 5, the slag scraping rotating and lifting mechanism comprises a rotating assembly and a lifting assembly; the lifting assembly comprises a lifting rod 6 and a first hydraulic cylinder 9, and the lifting rod 6 is connected with the piston rod of the first hydraulic cylinder 9. The lifting of the lifting rod 6 is controlled by the lifting of the piston rod of the hydraulic cylinder.

[0080] Further, the rotating assembly comprises the movable tooth 11 and the fixed tooth disc 10. The piston rod of the first hydraulic cylinder 9 is a hollow piston rod 48, the lifting rod 6 extends into the hollow piston rod 48 from the rodless cavity of the first hydraulic cylinder 9, the inner wall of the hollow piston rod 48 is provided with a bearing 46, and the bearing 46 is connected with the outer wall of the lifting rod 6;

[0081] The movable tooth 11 is arranged at the lower end of the lifting rod 6 of the first hydraulic cylinder 9, one end of the movable tooth 11 is rotationally connected with the end of the lifting rod 6, a spring 52 is arranged between the other end of the movable tooth 11 and the lifting rod 6, the downward face of the movable tooth 11 is a first acting tooth surface 50, the fixed tooth disc 10 is provided with a plurality of second acting tooth surfaces 51, the plurality of second acting tooth surfaces 51 are arranged in a circular array about the center of the fixed tooth disc 10, the fixed tooth disc 10 is located directly below the movable tooth 11, and the fixed tooth disc 10 is coaxially arranged with the lifting rod 6; each second acting tooth surface is arranged to be inclined, and the top of each second acting tooth surface 51 is located directly below the first acting tooth surface 50.

[0082] The first acting tooth surface 50 is matched with each second acting tooth surface 51, as the lifting rod 6 moves downward, the first acting tooth surface 50 of the movable tooth 11 is in contact with one second acting tooth surface 51 of the fixed tooth disc 10, as the movable tooth 11 continues to move downward, the movable tooth 11 drives the lifting rod 6 to rotate under the inclined guiding action of the second acting tooth surface 51, and the lifting rod 6 continues to rotate under the rotation trend brought by the movable tooth 11 during the downward movement of the movable tooth 11 when the lifting rod 6 moves upward.

[0083] The specific arrangement can enable the lifting rod 6 to rotate in the lifting process through the contact between the movable tooth 11 and the fixed tooth disc 10. The specific arrangement of the hollow piston rod 48 and the lifting rod 6 can enable the lifting rod 6 to rotate inside the piston rod, while the piston rod does not rotate, and the upward and downward movement of the piston rod can also drive the lifting rod 6 to move up and down.

[0084] It should be noted that, in other embodiments of the present application, the specific structure of the rotating assembly can also be:

[0085] The rotating assembly comprises a first tooth disc 61 and a second tooth disc 62, the piston rod of the first hydraulic cylinder 9 is a hollow piston rod 48, the lifting rod 6 extends into the hollow piston rod 48 from the rodless cavity of the first hydraulic cylinder 9, the inner wall of the hollow piston rod 48 is provided with a bearing 46, the bearing 46 is connected with the outer wall of the lifting rod 6, the first tooth disc 61 is arranged at the lower end of the lifting rod 6 of the first hydraulic cylinder 9, and a plurality of second tooth discs 62 are fixedly arranged on the trolley 14 and correspondingly located directly below the first tooth disc 61, one side of the first tooth disc 61 facing the second tooth disc 62 is provided with a plurality of arrayed first teeth 611 with inclined surfaces, and one side of the second tooth disc 62 facing the first tooth disc 61 is provided with a plurality of arrayed second teeth 621 matched with the first teeth 611; the first tooth disc 61 moves downward with the lifting rod 6, the inclined surfaces of the first teeth 611 are matched with the second teeth 621, and the second tooth disc 62 is rotated under the guidance of the second teeth 621, the second tooth disc 62 drives the lifting rod 6 to rotate, then the lifting rod 6 rises, the lifting rod 6 will continue to rotate for a period of time under the action of inertia, when the lifting rod 6 no longer rotates due to the friction of the slag scraping piece 3, the lifting assembly is controlled to make the lifting rod 6 descend to make the first tooth disc 61 and the second tooth disc 62 act, so as to achieve the purpose of rotating the lifting rod 6.

[0086] It also needs to be explained that the rotating assembly is only two embodiments of the present application, and in other embodiments, the rotating assembly can also be rotated in the following manner: the rotating assembly comprises a motor 71, a first push plate 72 and a second push plate 73, the first push plate 72 is connected with the output shaft of the motor 71, and the rotation of the motor 71 can drive the first push plate 72 to rotate around a vertical line as the axis, the second push plate 73 is arranged on the outer wall of the lifting rod 6 outside the piston rod, and is arranged along the length direction of the lifting rod 6, when the motor 71 rotates, the second push plate 73 is driven to rotate, the second push plate 73 pushes the first push plate 72 to rotate in the rotating process, and then the lifting rod 6 is rotated, the length of the second push plate 73 is the same as the length required by the lifting of the lifting rod 6, no matter what height the lifting rod 6 is lifted to, the second push plate 73 always has a part of the position at the same height as the first push plate 72, so that the lifting rod 6 can be continuously rotated during the whole working process.

[0087] Further, as shown in Figure 1 and Figure 3 , the slag rotating and lifting mechanism further comprises a hydraulic slip ring 8, the hydraulic slip ring 8 is arranged at the upper end of the first hydraulic cylinder 9, the lifting rod 6 penetrates through the hydraulic slip ring 8, and the oil pipe of the bidirectional hydraulic cylinder 4 is fixed on the lifting rod 6 and communicates with the hydraulic pipeline of the hydraulic slip ring 8.

[0088] The hydraulic slip ring 8 is specifically arranged to avoid the winding of the oil pipe connected to the bidirectional hydraulic cylinder 4 during rotation. The above arrangement is that the external hydraulic pipe is connected to the hydraulic slip ring 8, the inside of the hydraulic slip ring 8 is communicated with the oil pipe fixed on the lifting rod 6, and the oil pipe fixed on the outside of the lifting rod 6 rotates together when the lifting rod 6 rotates, but the problem of winding of the oil pipe does not occur. It should be noted that the hydraulic slip ring 8 is a very common hydraulic oil line connecting part, and the structure and implementation mode are prior art, which will not be described in detail here.

[0089] Further, as shown in Figure 7 , the slag scraping rotary lifting mechanism comprises a first lifting hydraulic control system for controlling the liquid inlet amount of the first hydraulic cylinder 9;

[0090] The first lifting hydraulic control system comprises a second hydraulic pipe communicated with the rod cavity and the rodless cavity, a second three-position four-way electromagnetic reversing valve 25 with a "Y" type mid-position function, two second throttles 27, and two second hydraulic control check valves 26.

[0091] One hydraulic cavity of the first hydraulic cylinder 9 is communicated with the second three-position four-way electromagnetic reversing valve 25 through one second hydraulic pipe, and the other hydraulic cavity of the first hydraulic cylinder 9 is communicated with the second three-position four-way electromagnetic reversing valve 25 through another second hydraulic pipe. A second hydraulic control check valve 26 and a second throttle 27 are arranged in sequence on each second hydraulic pipe from the second three-position four-way electromagnetic reversing valve 25 to the first hydraulic cylinder 9.

[0092] The lifting hydraulic cylinder is controlled by the second three-position four-way electromagnetic reversing valve 25, the rod cavity and the rodless cavity of the hydraulic cylinder control the oil inlet speed of the throttle valve, and the stable operation speed of the hydraulic cylinder is ensured. The hydraulic control check valve is arranged in the rodless cavity of the hydraulic cylinder, and the hydraulic cylinder piston rod can be started and stopped at any position in the stroke range.

[0093] Further, as shown in Figure 1 and Figure 6 , the lifting feeding mechanism comprises a second hydraulic cylinder 18, a lifting feeding rod 43, and a spiral feeding rod 20.

[0094] The spiral feeding rod 20 is arranged on the trolley 14 through a feeding connector, the spiral feeding rod 20 comprises a rod body and a rotating connector 21, the inner wall of the rod body is provided with a plurality of parallel spiral grooves 39 from top to bottom, the rotating connector 21 is provided with a plurality of protrusions 19 which are the same in number as the spiral grooves 39 in the circumferential direction, the rotating connector 21 is arranged in the rod body, the plurality of protrusions 19 are correspondingly clamped into the plurality of spiral grooves 39, and the lower end of the lifting feeding rod 43 extends into the rod body and is connected with the spiral connector 45.

[0095] The piston rod of the second hydraulic cylinder 18 is hollow, the lifting feeding rod 43 passes through the second hydraulic cylinder 18 and the piston rod of the second hydraulic cylinder 18, the piston rod and the lifting feeding rod 43 are connected through the bearing 46, the up and down movement of the piston rod drives the up and down movement of the lifting feeding rod 43, and the lifting feeding rod 43 is in communication with the universal nozzle 17.

[0096] The up and down movement of the lifting feeding rod 43 drives the rotary joint 21 to rotate along the spiral groove 39, so that the rotation of the lifting feeding rod 43 is realized, and due to the arrangement of the bearing 46, the rotation of the lifting feeding rod 43 is realized while the piston rod does not rotate, but the piston rod can also drive the up and down movement at the same time.

[0097] Optionally, as shown in the figure, the lifting feeding mechanism includes a second lifting hydraulic control system for controlling the liquid inlet amount of the second hydraulic cylinder 18; Figure 7

[0098] The second lifting hydraulic control system includes two third hydraulic pipelines in communication with the rodless cavity and the rod cavity, a third three-position four-way electromagnetic reversing valve 28 with a "Y" type, two third throttles 30, and two third hydraulic control check valves 29.

[0099] One hydraulic cavity of the second hydraulic cylinder 18 is in communication with the third three-position four-way electromagnetic reversing valve 28 through one third hydraulic pipeline, and the other hydraulic cavity of the second hydraulic cylinder 18 is in communication with the third three-position four-way electromagnetic reversing valve 28 through the other third hydraulic pipeline, and a third hydraulic control check valve 29 and a third throttle 30 are arranged in sequence on each third hydraulic pipeline from the third three-position four-way electromagnetic reversing valve 28 to the second hydraulic cylinder 18.

[0100] The second hydraulic cylinder 18 is controlled by an electromagnetic reversing valve, the rod cavity and the rodless cavity of the hydraulic cylinder control the oil inlet speed through throttles, so as to ensure the stable operation speed of the hydraulic cylinder. The rodless cavity of the hydraulic cylinder is provided with a hydraulic control check valve, so that the piston rod of the hydraulic cylinder can be started and stopped at any position in the stroke range.

[0101] Further, the furnace cover slag scraping and gunning device further includes a track 13 arranged below the furnace cover 0, the track 13 has a first sensing point located at the most end and a second sensing point located at the lowermost of the furnace cover 0.

[0102] ​The induction assembly comprises the first inductor 15, the second inductor and the third inductor 38; when the first inductor 15 senses the first induction point and the second inductor senses the second induction point while the trolley 14 runs to the under the furnace cover 0, the induction assembly sends signals to the slag removing device, the first three-position four-way electromagnetic valve 31 and the second three-position four-way electromagnetic valve 25 are electrified, and the slag removing device starts to work; when the second inductor senses the first induction point and the third inductor 38 senses the second induction point while the trolley 14 runs, the induction assembly sends signals to the gunning device, the third three-position four-way electromagnetic valve 28 is electrified, and the gunning device starts to work.

[0103] Further, the furnace cover slag removing and gunning device comprises a control system, all the electric units are uniformly controlled by the control system, and the control system is provided with a safety control program for safety consideration, and the control mode is as follows: when the first inductor 15 and the second inductor have signals, the electromagnetic reversing valves of the slag removing system are electrified, and the electromagnetic reversing valves of the remaining hydraulic systems cannot be electrified; when the second inductor and the third inductor 38 have signals, the electromagnetic reversing valves of the gunning lifting hydraulic system are electrified, and the electromagnetic reversing valves of the remaining hydraulic systems cannot be electrified.

[0104] Further, the furnace cover slag removing and gunning device further comprises an oil tank 23 and an oil circuit block 22, which provide hydraulic oil for all the hydraulic cylinders.

[0105] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A furnace cover slag scraping and spraying device, characterized in that, Includes a trolley and a slag scraping device, a spraying device and a sensing component mounted on the trolley; The slag scraping device includes a slag scraping mechanism and a slag scraping rotation and lifting mechanism for controlling the rotation and lifting of the slag scraping mechanism. The slag scraping mechanism includes two slag scraping blades arranged opposite each other and an opening control mechanism for controlling the distance between the two slag scraping blades in each pair. The spraying device includes a spraying machine, a lifting and feeding mechanism, and a universal nozzle; the spraying machine is connected to the feed inlet of the lifting and feeding mechanism, and the universal nozzle is connected to the discharge outlet of the lifting and feeding mechanism. The sensing component is mounted on the trolley and is communicatively connected to the slag scraping device. The sensing component can sense the driving position of the trolley and is used to control the slag scraping device to perform slag scraping when the trolley travels to the bottom of the furnace cover, and to control the spraying device to perform spraying when the trolley travels to the bottom of the furnace cover. The slag scraping rotary lifting mechanism includes a rotating component and a lifting component; The lifting assembly includes a lifting rod and a first hydraulic cylinder, wherein the lifting rod is connected to the piston rod of the first hydraulic cylinder; The rotating assembly includes movable teeth and a fixed toothed disc. The piston rod of the first hydraulic cylinder is a hollow piston rod. The lifting rod extends from the rodless chamber of the first hydraulic cylinder into the hollow piston rod. The inner wall of the hollow piston rod is provided with a bearing, and the bearing is connected to the outer wall of the lifting rod. A movable tooth is disposed at the lower end of the lifting rod of the first hydraulic cylinder. One end of the movable tooth is rotatably connected to the end of the lifting rod. A spring is disposed between the other end of the movable tooth and the lifting rod. The downward-facing side of the movable tooth is the first working tooth surface. The fixed tooth disk has multiple second working tooth surfaces, which are arranged in a circular array about the center of the fixed tooth disk. The fixed tooth disk is located directly below the movable tooth and is coaxially disposed with the lifting rod. Each second working tooth surface is inclined, and the top of each second working tooth surface is located directly below the first working tooth surface. The first working tooth surface matches each of the second working tooth surfaces. As the lifting rod moves downward, the first working tooth surface of the movable tooth contacts one of the second working tooth surfaces in the fixed tooth plate. As the movable tooth continues to move downward, the movable tooth drives the lifting rod to rotate under the tilting guidance of the second working tooth surface. When the lifting rod moves upward, it continues to rotate under the rotational trend brought about by the downward movement of the movable tooth. Alternatively, the rotating assembly includes a first gear disk and a second gear disk. The piston rod of the first hydraulic cylinder is a hollow piston rod. The lifting rod extends from the rodless chamber of the first hydraulic cylinder into the hollow piston rod. A bearing is provided on the inner wall of the hollow piston rod, and the bearing is connected to the outer wall of the lifting rod. The first gear disk is located at the lower end of the lifting rod of the first hydraulic cylinder. A plurality of second gear disks are fixedly mounted on the trolley, corresponding to the position directly below the first gear disk. The side of the first gear disk facing the second gear disk has a plurality of first teeth with inclined surfaces arranged in an array. The side of the second gear disk facing the first gear disk has a plurality of second teeth arranged in an array that cooperate with the first teeth. As the lifting rod moves downward, the inclined surfaces of the first teeth cooperate with the second teeth, and under the guidance of the second teeth, the second gear disk rotates. The rotation of the second gear disk drives the lifting rod to rotate, and then the lifting rod rises. The lifting rod will continue to rotate for a period of time under the action of inertia. The slag scraping rotary lifting mechanism includes a first lifting hydraulic control system for controlling the liquid inlet volume of the first hydraulic cylinder; The first lifting hydraulic control system includes a second hydraulic pipeline connected to the rod chamber and the rodless chamber, a second three-position four-way solenoid directional valve with a "Y"-shaped center position function, two second throttle valves, and two second hydraulically controlled check valves; One hydraulic chamber of the first hydraulic cylinder is connected to the second three-position four-way solenoid directional valve through a second hydraulic pipeline, and the other hydraulic chamber of the first hydraulic cylinder is connected to the second three-position four-way solenoid directional valve through another second hydraulic pipeline. On each second hydraulic pipeline, a second hydraulic control check valve and a second throttle valve are sequentially arranged from the second three-position four-way solenoid directional valve to the first hydraulic cylinder.

2. The furnace cover scraping and spraying device according to claim 1, characterized in that, The opening control mechanism includes a bidirectional hydraulic cylinder, and the two opposing piston rods of the bidirectional hydraulic cylinder are respectively connected to the two opposing scraper blades.

3. The furnace cover scraping and spraying device according to claim 2, characterized in that, The opening control mechanism includes an opening hydraulic control system, which includes two first hydraulic lines, a first three-position four-way solenoid directional valve with a "Y" type center position function, two first throttle valves, and two first hydraulically controlled check valves. One hydraulic chamber of the bidirectional hydraulic cylinder is connected to the first three-position four-way solenoid directional valve via a first hydraulic line, and the other hydraulic chamber of the bidirectional hydraulic cylinder is connected to the first three-position four-way solenoid directional valve via another first hydraulic line. On each first hydraulic line, a first hydraulic control check valve and a first throttle valve are sequentially arranged from the first three-position four-way solenoid directional valve to the bidirectional hydraulic cylinder.

4. The furnace cover scraping and spraying device according to claim 3, characterized in that, The opening hydraulic control system also includes an overflow valve, which is connected to both first hydraulic lines, and the connection point is located between the first throttle valve and the bidirectional hydraulic cylinder.

5. The furnace cover scraping and spraying device according to claim 2, characterized in that, The slag scraping mechanism also includes a rotating table, in which a guide groove is provided, and the two oppositely arranged slag scraping blades are located in the guide groove.

6. The furnace cover scraping and spraying device according to claim 1, characterized in that, The furnace cover slag scraping and spraying device also includes a slag scraping auxiliary device, which includes a slag receiving tray and at least one slag discharge pipe and a slag hopper matching the number of slag discharge pipes. The slag receiving plate is located below the slag scraping structure; each slag hopper is mounted on the trolley, the inlet of each slag discharge pipe is connected to the bottom of the slag receiving plate, and the outlet of the slag discharge pipe is located directly above the corresponding slag hopper.

7. The furnace cover scraping and spraying device according to claim 1, characterized in that, The slag scraping rotation lifting mechanism also includes a hydraulic slip ring, which is disposed at the upper end of the first hydraulic cylinder. The lifting rod passes through the hydraulic slip ring, and the oil pipe of the first hydraulic cylinder is fixed on the lifting rod. The oil pipe is connected to the hydraulic pipeline of the hydraulic slip ring.

8. The furnace cover scraping and spraying device according to claim 1, characterized in that, The lifting and feeding mechanism includes a second hydraulic cylinder, a lifting and feeding rod, and a screw feeding rod. The spiral feeding rod is mounted on the trolley via a feeding connector. The spiral feeding rod includes a rod body and a rotary connector. The inner wall of the rod body has multiple parallel spiral grooves from top to bottom. The rotary connector has multiple protrusions in the circumferential direction, the same number as the spiral grooves. The rotary connector is located inside the rod body. The multiple protrusions are inserted into the multiple spiral grooves one by one. The lower end of the lifting feeding rod extends into the rod body and connects to the rotary connector. The piston rod of the second hydraulic cylinder has a hollow structure. The lifting feeding rod passes through the second hydraulic cylinder and the piston rod of the second hydraulic cylinder. The piston rod and the lifting feeding rod are connected by a bearing. The up and down movement of the piston will drive the up and down movement of the lifting feeding rod. The lifting feeding rod is connected to the universal nozzle.

9. The furnace cover scraping and spraying device according to claim 8, characterized in that, The lifting and feeding mechanism includes a second lifting hydraulic control system for controlling the amount of liquid entering the second hydraulic cylinder; The second lifting hydraulic control system includes two third hydraulic lines connected to the rodless chamber and the rod chamber, a third three-position four-way solenoid directional valve with a "Y"-shaped center position function, two third throttle valves, and two third hydraulically controlled check valves. One hydraulic chamber of the second hydraulic cylinder is connected to the third three-position four-way solenoid directional valve through a third hydraulic line, and the other hydraulic chamber of the second hydraulic cylinder is connected to the third three-position four-way solenoid directional valve through another third hydraulic line. Each third hydraulic line is provided with a third hydraulic control check valve and a third throttle valve in sequence from the third three-position four-way solenoid directional valve to the second hydraulic cylinder.

10. The furnace cover scraping and spraying device according to claim 1, characterized in that, The furnace cover scraping and spraying device also includes a track, which is located below the furnace cover and has a first sensing point at the far end and a second sensing point at the bottom of the furnace cover. The sensing component includes a first sensor, a second sensor, and a third sensor; When the trolley moves to the bottom of the furnace cover, and the first sensor senses the first sensing point and the second sensor senses the second sensing point, the sensing component sends a signal to the slag scraping device, and the slag scraping device starts working; when the trolley moves to the point where the second sensor senses the first sensing point and the third sensor senses the second sensing point, the sensing component sends a signal to the spraying device, and the spraying device starts working.

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