Steel slag cooling and conveying device

Abstract

The invention discloses a steel slag cooling and conveying device, and relates to the technical field of steel slag cooling and conveying. The steel slag cooling and conveying device comprises a rack, a supporting plate fixedly connected to the right portion of the upper end face of the rack and a roller rotationally connected between the rack and the supporting plate, the left end face of the supporting plate is fixedly connected with a mounting plate, and the mounting plate is provided with a gradient cooling part used for effectively penetrating into steel slag and conducting step-by-step cooling. According to the steel slag cooling device disclosed by the invention, flexible turning and uniform heat release of steel slag are realized through the adjustable turning part, and the cooling depth and stability are improved in cooperation with the gradient cooling part; therefore, the efficient, uniform and controllable cooling process of the steel slag is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel slag cooling and conveying, in particular to a steel slag cooling and conveying device. BACKGROUND

[0002] Steel slag cooling and conveying is a key process for cooling and conveying high-temperature steel slag discharged in the steelmaking process to subsequent processing links. Currently, a slag cooler device is often used for simultaneous conveying and cooling treatment of steel slag. The existing slag cooler structure generally includes a rotatable cylinder. A spiral paddle is arranged in the cylinder. While the cylinder rotates, the spiral paddle also rotates to drive the steel slag to move axially and turn over, so that the steel slag is continuously exposed to the action of the cooling medium in the movement, thereby gradually releasing the heat therein. In combination with a spraying system of a cooling medium such as water mist or air flow, continuous conveying and cooling operation of the steel slag is realized.

[0003] However, the structure in the traditional cylinder generally adopts a welding method to fixedly connect the spiral paddle on the inner wall of the cylinder. This fixed structure does not have an adjustable angle feature. In addition, the rotating speed of the entire cylinder is generally a constant set value. Therefore, the moving speed and residence time of the steel slag in the cylinder are passively set, lacking flexible regulation and control capability. The cooling time cannot be adaptively adjusted according to the initial temperature or fluctuation of the feed amount of the steel slag and other actual working conditions. This easily leads to insufficient cooling time of the steel slag in the cylinder, resulting in a high slag discharge temperature and a large residual heat. At the same time, due to the fixed angle of the paddle, the turning effect is limited. Part of the steel slag is not turned over completely and is easily accumulated in the cylinder, causing the heat in the local area to be difficult to fully release. Although some cylinders try to use spiral paddles with adjustable angles to achieve flexible regulation and control, in order to realize the adjustment of the angle of the paddle, a certain rotating gap is generally reserved between the paddle and the cylinder. This structure is difficult to fully adhere to the cylinder, causing the steel slag to easily enter between the paddle and the cylinder during the cooling and rolling process, resulting in the jamming of the paddle and the loss of adjustment capability.

[0004] On the other hand, although most traditional cylinder cooling systems are equipped with a "water + air" composite spraying system, water cooling is still the main method in actual operation, and the air cooling function is weak. The cooling process excessively relies on a large amount of water mist. Since water has strong fluidity, it can indeed penetrate into the gap between the steel slag particles and has certain cooling advantages. However, the air flow blowing angle is fixed and can only form disturbance on the surface layer of the steel slag, making it difficult to penetrate into the internal part of the slag pile to participate in deep cooling. This limits the air cooling effect and reduces the participation of air. The overall cooling intensity is uniformly distributed in the entire cylinder, lacking gradient regulation and control capability, and it is difficult to effectively adapt to the staged cooling requirements of the steel slag from high temperature to low temperature. When a large amount of water mist directly acts on the surface of high-temperature steel slag, it easily leads to a sharp temperature drop, generating a large thermal stress, and inducing problems such as slag particle explosion and pulverization. SUMMARY

[0005] The application provides a steel slag cooling and conveying device, which solves the technical problems of the existing drum cooling device, such as the fixed welded spiral stirring piece, the lack of angle adjustment capability, the constant rotating speed, the uncontrollable residence time and stirring effect of the steel slag in the drum, the insufficient cooling, the failure of some adjustable stirring pieces due to the structural gap being easily blocked by the steel slag, the water cooling being mainly used in the traditional water and air spraying system, the low participation of air cooling, the single cooling intensity, the difficulty in adapting to the gradient cooling requirement of the steel slag from high temperature to low temperature, and the explosion of the slag particles caused by the thermal stress due to the water mist quenching.

[0006] The steel slag cooling and conveying device provided by the application comprises a rack, a supporting plate fixedly connected to the right part of the upper end face of the rack, and a drum rotationally connected between the rack and the supporting plate. The adjustable stirring part comprises a plurality of rotating shafts which are equidistantly distributed along the axial direction and the circumferential direction of the drum and penetrate through the drum, an arc-shaped seat is fixedly connected to one end of each rotating shaft close to the axis of the drum, a spiral stirring piece is fixedly connected to the arc-shaped inner wall of the arc-shaped seat, a plurality of slide grooves which are equidistantly arranged on the side wall of the arc-shaped seat close to the drum are arranged in a stepped manner, a baffle which abuts against the inner wall of the drum is slidingly connected to the inside of each slide groove, and a top spring is fixedly connected between the baffle and the slide groove.

[0007] In a possible implementation manner, the gradient cooling part comprises two pipe covers which are symmetrically and fixedly connected to the front and rear sides of the mounting plate, a U-shaped pipe which penetrates through and is fixedly connected to the two pipe covers, a water delivery pipe which penetrates through and is fixedly connected to the supporting plate and is in communication with the rear end of the U-shaped pipe, and a gas blowing unit which is jointly installed on the left part of the lower end face of the two pipe covers. The gas blowing unit is used for reciprocatingly swinging to cool the stirred steel slag.

[0008] In a possible implementation manner, the gas blowing unit comprises a plurality of sliding seats which are equidistantly and fixedly connected to the lower end faces of the two pipe covers through a fixed plate, a conveying pipe which is embeddedly and fixedly connected in the sliding seat and is distributed along an S-shaped path, a gas delivery pipe which is embeddedly and fixedly connected to the supporting plate, the left end of the gas delivery pipe penetrating through the inner cavity of the pipe cover located at the rear and being in communication with the right end of the conveying pipe, and a plurality of air jet heads which are communicated with the lower part of each transverse section of the conveying pipe through a communication hose.

[0009] In a possible implementation, the lower end surface of the sliding seat is fixedly connected with a plurality of support rods which are hingedly connected with the air jet head, the outer part of the sliding seat is slidingly connected with a sliding cylinder, the lower end surface of each vertical section of the sliding cylinder is fixedly connected with a plurality of push rods, the left and right parts of the air jet head are fixedly connected with a waist-shaped frame, and the opposite sides of the two adjacent push rods on the sliding seat are fixedly connected with push rods which are slidingly arranged in the waist-shaped frame.

[0010] In a possible implementation, the upper end surface of the sliding seat is provided with a sliding groove, and the sliding cylinder is fixedly connected with an electric sliding block which is slidingly arranged in the sliding groove.

[0011] In a possible implementation, the adjusting assembly comprises a ring frame which is slidingly connected to the outer part of the roller, two sliding rods which are symmetrically fixedly connected to the left end surface of the support plate, and a sliding frame which is jointly slidingly connected to the outer part of the two sliding rods, the sliding frame and the ring frame are rotationally connected to each other, the left end surface of the ring frame is fixedly connected with a plurality of push rods at equal intervals in the circumferential direction, each push rod is hingedly connected with a plurality of telescopic rods corresponding to the rotating shafts at equal intervals, and the end of each telescopic rod close to the corresponding rotating shaft is fixedly connected with the rotating shaft.

[0012] In a possible implementation, the support plate is rotationally connected with a screw rod which is threadedly connected with the lower part of the sliding frame, the right end surface of the support plate is fixedly connected with a driving motor through a connecting plate, and the output shaft of the driving motor is fixedly connected with the right end of the screw rod.

[0013] In a possible implementation, the outer wall of the roller is provided with a plurality of guide grooves at equal intervals in the circumferential direction, and the circumferential inner wall of the ring frame is fixedly connected with guide blocks which are slidingly arranged in the guide grooves.

[0014] As can be seen from the above technical solutions, the present application has the following advantages: in the present application, the arc-shaped seat, the spiral push piece and the adjusting assembly in the adjustable turning part are cooperatively matched, the angle of the spiral push piece is dynamically adjustable in structure, the inclination angle of the spiral push piece can be flexibly adjusted according to the initial temperature of the steel slag and the feeding amount, the baffle arranged at the same time can always tightly adhere to the inner wall of the roller, the residence time of the steel slag in the cylinder is effectively prolonged, the turning range and uniformity are enhanced, the traditional adjustable structure is eliminated due to the gap, the jamming hidden danger is eliminated, the heat in the steel slag can be fully released, the heat release is more uniform, and the cooling is more thorough and complete.

[0015] In this invention, the air blowing unit in the gradient cooling section reciprocates and dynamically blows air, giving the airflow dynamic disturbance capability. This allows for precise targeting of the steel slag particles in their thrown state, achieving three-dimensional enveloping penetration of the airflow. This effectively introduces cold air into the particle accumulation area and deep crevices, significantly increasing the air cooling coverage and cooling depth. This achieves initial pre-cooling with ambient temperature air, followed by spraying the steel slag with small and large flow rates from the spray heads in the left and right areas, respectively achieving steady cooling in the middle section and enhanced cooling in the final section. This allows the steel slag to gradually and steadily cool down to the discharge temperature, effectively avoiding physical damage caused by sudden cooling.

[0016] In this invention, the adjustable turning section enables the steel slag to be flexibly turned and heat to be released evenly. Combined with the gradient cooling section, the temperature is gradually reduced and cooled, thereby improving the cooling depth and stability, and thus achieving a high-efficiency, uniform and controllable cooling process for the steel slag. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the steel slag cooling and conveying device provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the drum provided by the present invention.

[0020] Figure 3 This is a schematic cross-sectional view of the arc-shaped seat provided by the present invention.

[0021] Figure 4 A schematic diagram of the gradient cooling section installation structure provided by the present invention.

[0022] Figure 5 This is a schematic cross-sectional view of the tube cover provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the air blowing unit structure provided by the present invention (part of the slide is hidden).

[0024] The above-mentioned attached drawings include the following reference numerals: 1. Frame; 2. Roller; 3. Mounting plate; 4. Gradient cooling section; 41. Pipe cover; 42. U-shaped pipe; 43. Air blowing unit; 431. Slide seat; 432. Conveying pipe; 433. Air supply pipe; 434. Jet head; 435. Support rod assembly; 436. Slide cylinder; 437. Lever; 438. Waist-shaped frame; 439. Lever column; 44. Spray head; 5. Adjustable tilting section; 51. Rotating shaft; 52. Arc-shaped seat; 53. Spiral lever; 54. Baffle; 55. Adjustment assembly; 551. Ring frame; 552. Sliding frame; 553. Push rod; 554. Telescopic rod; 555. Screw; 556. Drive motor; 7. Support plate. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Please see Figure 1 , Figure 2 and Figure 4 The present invention provides a technical solution: a steel slag cooling and conveying device, comprising a frame 1, a support plate 7 fixedly connected to the right side of the upper end face of the frame 1, and a roller 2 rotatably connected between the frame 1 and the support plate 7. A drive device for driving the roller 2 to rotate is provided between the frame 1 and the roller 2. An mounting plate 3 is fixedly connected to the left end face of the support plate 7. A gradient cooling section 4 is provided on the mounting plate 3 for effectively penetrating into the interior of the steel slag and performing step-by-step cooling. An adjustable turning section 5 is installed on the roller 2, which can turn the steel slag at different angles to prolong the residence time and fully contact the gradient cooling section 4, thereby further accelerating the cooling of the steel slag.

[0027] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, the adjustable flipping part 5 includes several rotating shafts 51 that are equidistantly distributed along the axial and circumferential directions of the roller 2 and rotatably connected to the roller 2. Each rotating shaft 51 is fixedly connected to an arc-shaped seat 52 at one end near the axis of the roller 2. A spiral pawl 53 is fixedly connected to the arc-shaped inner wall of the arc-shaped seat 52. Several stepped grooves are equidistantly opened on the outer wall of the arc-shaped seat 52 near the roller 2. A baffle 54 that touches the inner wall of the roller 2 is slidably connected inside each groove. A top spring is fixedly connected between the baffle 54 and the groove. An adjustment component 55 is provided between the roller 2 and the support plate 7 to drive the rotating shaft 51 to rotate so as to indirectly adjust the tilt angle of the spiral pawl 53.

[0028] Please see Figure 1 and Figure 2 The adjusting assembly 55 includes a ring frame 551 slidably connected to the outside of the roller 2, two sliding rods symmetrically fixed to the left end face of the support plate 7, and a sliding frame 552 slidably connected to the outside of the two sliding rods. The sliding frame 552 and the ring frame 551 are rotatably connected to each other. Several push rods 553 are fixedly connected circumferentially at equal intervals on the left end face of the ring frame 551. Several telescopic rods 554 corresponding to the rotating shaft 51 are hinged at equal intervals on each push rod 553. The end of the telescopic rod 554 closest to the corresponding rotating shaft 51 is fixedly connected to the rotating shaft 51. A screw 555 is rotatably connected through the roller 2. The screw 555 is threadedly connected to the lower part of the sliding frame 552. A drive motor 556 is fixedly connected to the right end face of the support plate 7 through a connecting plate. The output shaft of the drive motor 556 is fixedly connected to the right end of the screw 555. Several guide grooves are equidistantly opened on the outer wall of the roller 2. A guide block that is slidably set in the guide groove is fixedly connected to the inner wall of the ring frame 551. Several rectangular covers corresponding to the push rods 553 are fixedly connected to the outer wall of the roller 2 at equal intervals. Each rectangular cover is movably sleeved on the outside of the corresponding push rod 553.

[0029] The steel slag is fed into the left port of the drum 2. Then, the drive equipment is controlled to drive the drum 2 to rotate. The drum 2 then drives the ring frame 551 to rotate relative to the sliding frame 552 through the guide groove and guide block. The drum 2 then indirectly drives the spiral vane 53 to revolve. During the revolve of the spiral vane 53, the steel slag is gradually moved to the right and turned over, releasing the heat in the steel slag. The steel slag is cooled when it moves to the right and passes under the gradient cooling section 4.

[0030] When the initial temperature of the steel slag is high or the feed rate is large, the drive motor 556 is controlled to run, driving the screw 555 to rotate. The screw 555 then pushes the sliding frame 552 to move laterally. The sliding frame 552 then drives the ring frame 551 to move (the guide block and guide groove cooperate to limit the movement path of the ring frame 551, so that the ring frame 551 can only slide along the axis of the drum 2 relative to the drum 2). The ring frame 551 then drives the push rod 553 to move, and the push rod 553 then drives the telescopic rod 554 to move. The rotating shaft 51 rotates, which in turn drives the arc-shaped seat 52 to rotate. The arc-shaped seat 52 then drives the spiral vane 53 to rotate. Simultaneously, the arc-shaped seat 52 also drives the baffle 54 to rotate. The baffle 54 at different positions extends or retracts from the groove as the arc-shaped seat 52 rotates, and abuts against the inner wall of the drum 2, thereby preventing steel slag from entering the changing gap between the arc-shaped seat 52 and the drum 2 after rotation. The spiral vane 53, after adjusting its angle, then moves the steel slag. (The initial angle of the spiral vane 53 is as follows...) Figure 2 As shown), the larger the angle adjusted by the spiral lever 53, the better (the specific process is as follows). Figure 2If the spiral blade 53 located at the bottom rotates counterclockwise (and the maximum rotation angle of the spiral blade 53 does not exceed the position perpendicular to the axis of the drum 2), the lateral movement distance of the steel slag in the drum 2 will be shortened, the movement speed will be slowed down, the residence time of the steel slag will be extended, and the number of times the steel slag is turned over will be increased. In this way, the heat in the steel slag can be effectively and fully released, and the accumulation of steel slag will be avoided.

[0031] Please see Figure 4 , Figure 5 and Figure 6 In this embodiment, the gradient cooling section 4 includes two pipe covers 41 symmetrically fixed to the front and rear sides of the mounting plate 3, a U-shaped pipe 42 fixedly connected to the two pipe covers 41, a water supply pipe fixedly connected to the support plate 7 and communicating with the rear end of the U-shaped pipe 42, and an air blowing unit 43 installed on the left side of the lower end face of the two pipe covers 41. The air blowing unit 43 is used to reciprocate to cool the steel slag being turned over. Several spray heads 44 that penetrate the pipe covers 41 are equidistantly connected to the lower part of the two longitudinal sections of the U-shaped pipe 42. The pipe covers 41 and the support plate 7 are fixedly connected by a diagonal tie rod to enhance the installation reliability of the pipe covers 41. The spray heads 44 are divided into two groups of the same number, left and right. The spray volume of the spray heads 44 in the right group is greater than that in the left group.

[0032] Please see Figure 5 and Figure 6 The blowing unit 43 includes several slides 431 that are equidistantly fixed to the lower end faces of two tube covers 41 via fixed plates. Conveying pipes 432 distributed along an S-shaped path are embedded and fixedly connected to the slides 431. An air supply pipe 433 is embedded and fixedly connected to the support plate 7. The left end of the air supply pipe 433 passes through the inner cavity of the rear tube cover 41 and connects to the right end of the conveying pipe 432. Each transverse section of the conveying pipe 432 is connected to a jet nozzle 434 via a connecting hose at its lower end. Several support rods hinged to the jet nozzles 434 are equidistantly fixed to the lower end faces of the slides 431. 435, a slide cylinder 436 is slidably connected to the outside of the slide base 431. Several levers 437 are fixedly connected at equal intervals to the lower end face of the two vertical sections of the slide cylinder 436. Waist-shaped frames 438 are fixedly connected to the left and right sides of the jet head 434. Two adjacent levers 437 on the left and right sides of the slide base 431 are fixedly connected to the opposite sides of the levers 439, which are slidably set in the waist-shaped frames. A sliding groove is opened on the upper end face of the slide base 431. An electric slider is slidably set in the sliding groove and fixedly connected to the slide cylinder 436. A protective cover is fixedly connected to the upper part of the slide cylinder 436 and sleeved on the outside of the electric slider.

[0033] Air and water are pumped into the air supply pipe 433 and water supply pipe respectively by an external pump. The airflow enters the delivery pipe 432 through the air supply pipe 433 and then sprays out from the jet nozzle 434. The water enters the U-shaped pipe 42 through the water supply pipe and then is atomized and sprayed out from the spray nozzle 44. At the same time, the electric slider 622 is controlled to move back and forth. The two adjacent electric sliders move in opposite directions. The electric slider 622 then drives the slide cylinder 436 to move synchronously outside the slide base 431. The slide cylinder 436 then drives the lever 437 to move back and forth. The lever 437 then drives the lever 439 to slide in the waist-shaped frame 438. The lever 439 then moves the jet nozzle 434 back and forth around the support rod assembly 435 through the waist-shaped frame 438.

[0034] The jet head 434 then oscillates the airflow back and forth and blows it into the inside of the drum 2. As the drum 2 rotates, it drives the spiral vane 53 to turn over the steel slag. The spiral vane 53 will first scoop up the steel slag and then move it to the nine o'clock or three o'clock position of the drum 2. At this time, the steel slag is thrown down under its own weight. At this time, the steel slag is in a loose and suspended state. The oscillating jet head 434 can effectively blow air into the steel slag and penetrate into the interior of the thrown steel slag to cool it. This allows the air cooling to participate deeply in the cooling of the steel slag and perform preliminary pre-cooling of the steel slag.

[0035] The slag then continues to move to the right, passing under the spray heads 44 on the left side of the U-shaped tube 42. The spray heads 44 on the left side of the U-shaped tube 42 spray water mist downwards, which then comes into contact with the thrown slag, providing a steady mid-stage cooling effect. After the mid-stage cooling is completed, the slag continues to move to the right. When it reaches the spray heads 44 on the right side of the U-shaped tube 42, the spray volume of the spray heads 44 on the right side is further increased. The sprayed water mist comes into contact with the thrown slag again, further enhancing the cooling effect and reducing the slag temperature to the discharge temperature. Finally, the drive device is controlled to reverse the rotation of the drum 2, which in turn drives the spiral vane 53 to reverse, pushing the slag to the left and discharging it from the left port of the drum 2.

[0036] During operation, steel slag is fed into drum 2, and the drive equipment is controlled to rotate drum 2. During the rotation of drum 2, the spiral vane 53 revolves, causing the steel slag to move to the right within the drum 2 cavity and tumble it. The adjustable tumbling section 5 is then controlled according to the initial temperature of the steel slag and the feed rate, and the tilt angle of the spiral vane 53 is adjusted to speed up or slow down the movement of the steel slag. At the same time, the tumbling amplitude of the steel slag is adjusted, thereby adjusting the residence time of the steel slag in drum 2, so that the heat in the steel slag is fully released and the cooling speed of the steel slag is accelerated. When the steel slag moves to the right and passes under the gradient cooling section 4, the gradient cooling section 4 is controlled to operate: first, pre-cooling with ambient temperature air, then intermediate cooling with small flow spray, and finally final cooling with large flow spray, so as to carry out step-by-step gradient cooling of the steel slag, thereby ensuring that the cooling of the steel slag is in a stable state.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A steel slag cooling and conveying device, comprising a frame, a support plate fixedly connected to the right side of the upper end face of the frame, and a roller rotatably connected between the frame and the support plate, characterized in that: A mounting plate is fixedly connected to the left end face of the support plate. The mounting plate is provided with a gradient cooling section for effectively penetrating into the interior of the steel slag and performing step-by-step cooling. An adjustable turning section is installed on the drum to turn the steel slag at different angles to prolong the residence time and fully contact the gradient cooling section, thereby further accelerating the cooling of the steel slag. The adjustable tilting part includes several rotating shafts equidistantly distributed along the axial and circumferential directions of the drum and rotatably connected to the drum. Each rotating shaft has an arc-shaped seat fixedly connected to one end near the drum axis. A spiral pawl is fixedly connected to the arc-shaped inner wall of the arc-shaped seat. Several stepped grooves are equidistantly distributed on the outer wall of the arc-shaped seat near the drum. A baffle that contacts the inner wall of the drum is slidably connected inside each groove, and a top spring is fixedly connected between the baffle and the groove. An adjustment assembly is provided between the roller and the support plate to drive the rotating shaft to indirectly adjust the tilt angle of the spiral blade.

2. The steel slag cooling and conveying device according to claim 1, characterized in that: The gradient cooling section includes two pipe covers symmetrically fixed to the front and rear sides of the mounting plate, a U-shaped pipe fixedly connected through the two pipe covers, a water supply pipe fixedly connected through the support plate and communicating with the rear end of the U-shaped pipe, and an air blowing unit installed together on the left side of the lower end face of the two pipe covers. The air blowing unit is used to reciprocate to cool the steel slag being turned over. The lower part of the two longitudinal sections of the U-shaped pipe is equidistantly connected to several spray heads that penetrate the pipe covers.

3. The steel slag cooling and conveying device according to claim 2, characterized in that: The blowing unit includes several slides that are equidistantly fixed to the lower end faces of two tube covers via fixed plates. A delivery pipe distributed along an S-shaped path is embedded and fixedly connected in the slides. An air supply pipe is embedded and fixedly connected to the support plate. The left end of the air supply pipe passes through the inner cavity of the tube cover located at the rear and is connected to the right end of the delivery pipe. Each transverse section of the delivery pipe is connected to a jet nozzle at the lower part via a connecting hose.

4. A steel slag cooling and conveying device according to claim 3, characterized in that: The lower end face of the slide block is fixedly connected with several support rods that are hinged to the jet head at equal intervals. The slide block is slidably connected with a slide cylinder. The lower end faces of the two vertical sections of the slide cylinder are fixedly connected with several levers at equal intervals. The left and right sides of the jet head are fixedly connected with waist-shaped frames. The two adjacent levers on the left and right sides of the slide block are fixedly connected with levers that are slidably set in the waist-shaped frames.

5. A steel slag cooling and conveying device according to claim 4, characterized in that: The upper end face of the slide block is provided with a sliding groove, and an electric slider is fixedly connected to the slide cylinder and slidably disposed in the sliding groove.

6. A steel slag cooling and conveying device according to claim 1, characterized in that: The adjustment assembly includes a ring frame slidably connected to the outside of the roller, two sliding rods symmetrically fixed to the left end face of the support plate, and a sliding frame slidably connected to the outside of the two sliding rods. The sliding frame and the ring frame are rotatably connected to each other. Several push rods are fixedly connected circumferentially at equal intervals on the left end face of the ring frame. Several telescopic rods corresponding to the rotating shaft are hinged equidistantly on each push rod. The end of the telescopic rod close to the corresponding rotating shaft is fixedly connected to the rotating shaft.

7. A steel slag cooling and conveying device according to claim 6, characterized in that: A screw rod is rotatably connected through the support plate. The screw rod is threadedly connected to the lower part of the sliding frame. A drive motor is fixedly connected to the right end face of the support plate through a connecting plate. The output shaft of the drive motor is fixedly connected to the right end of the screw rod.

8. A steel slag cooling and conveying device according to claim 6, characterized in that: The outer wall of the roller is provided with several guide grooves at equal intervals around its circumference, and a guide block is fixedly connected to the inner wall of the ring frame and slidably disposed in the guide groove.

9. A steel slag cooling and conveying device according to claim 2, characterized in that: The spray heads are divided into two groups of the same number, left and right, with the spray volume of the spray heads in the right group being greater than that of the spray heads in the left group.

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