Steel slag recovery rotary kiln

Abstract

The utility model discloses a steel slag recovery rotary kiln, which relates to the technical field of steel slag recovery and comprises a mounting frame welded on the side wall of a rotary kiln body, a speed-adjustable feeding mechanism is arranged on the mounting frame, and a height adjusting mechanism is arranged at the bottom of the rotary kiln body. The speed-adjustable feeding mechanism comprises a steel slag conveying cylinder, a shaft body, an auger conveying blade welded to the shaft body and located in the steel slag conveying cylinder, a variable speed driving assembly and a variable frequency governor fixedly installed on the installation frame. The speed-adjustable feeding mechanism is arranged, the rotating speed of the variable speed motor can be adjusted through the variable frequency governor, and then the feeding speed can be flexibly adjusted and controlled according to the treatment condition of steel slag in the rotary kiln; and the situation of material accumulation caused by untimely treatment of the steel slag in the rotary kiln due to too high feeding speed is reduced, so that uniform heating of the entered steel slag in the kiln can be effectively ensured, and the steel slag recovery effect is favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel slag recycling technical field especially relates to steel slag recycling rotary kiln. BACKGROUND

[0002] The rotary kiln can provide efficient heat exchange environment, and this is very important for the treatment of steel slag, in the rotary kiln, the steel slag can be heated to high temperature, so that the useful ingredients in it can be effectively separated and recycled, for example, the valuable metal elements such as iron, manganese, silicon in the steel slag can be extracted through high-temperature treatment, so as to realize the recycling of resources.

[0003] The existing rotary kiln cannot flexibly control the feeding speed according to the treatment condition of the steel slag in the rotary kiln during the feeding stage, and then the steel slag treatment in the rotary kiln may not be timely due to the too fast feeding speed, thereby causing material accumulation, affecting the heating uniformity of the steel slag in the kiln, and leading to poor steel slag recycling effect. UTILITY MODEL CONTENTS

[0004] The utility model discloses a rotary kiln for steel slag recycling, which can flexibly control the feeding speed according to the treatment condition of the steel slag in the rotary kiln during the feeding stage, thereby avoiding the problems of material accumulation, poor heating uniformity of the steel slag in the kiln and poor steel slag recycling effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The steel slag recycling rotary kiln comprises a mounting frame welded to the side wall of the rotary kiln body, a speed-adjustable feeding mechanism is arranged on the mounting frame, and a height adjusting mechanism is arranged at the bottom of the rotary kiln body.

[0007] The speed-adjustable feeding mechanism comprises a steel slag conveying cylinder welded to the top outer wall of the mounting frame, a shaft body rotatably installed in the steel slag conveying cylinder, an auger conveying blade welded to the shaft body and located in the steel slag conveying cylinder, a variable-speed driving assembly and a frequency converter fixedly installed on the mounting frame.

[0008] The variable-speed driving assembly comprises a motor fixing plate welded to the side wall of the mounting frame, a variable-speed motor fixedly installed at the top outer wall of the motor fixing plate, a driving gear fixedly sleeved on the output shaft of the variable-speed motor and a transmission gear fixedly sleeved on the shaft body.

[0009] Preferably, a feeding hopper is fixedly and communicatively connected to the top front end of the steel slag conveying cylinder, and a feeding pipe is arranged at the bottom rear end of the steel slag conveying cylinder and is in communication with the feeding opening of the rotary kiln body.

[0010] Preferably, the driving gear and the transmission gear are in meshing engagement, and the frequency converter is electrically connected with the variable speed motor.

[0011] Preferably, the height adjusting mechanism comprises a hollow support seat provided with two threaded lifting assemblies, a motor mounting plate welded to the side wall of the hollow support seat, a servo motor fixedly mounted to the top outer wall of the motor mounting plate, a transmission shaft rotatably mounted in the hollow support seat and two worms fixedly sleeved on the transmission shaft.

[0012] Preferably, each of the two threaded lifting assemblies comprises a fixed square tube welded to the top outer wall of the hollow support seat, an adjusting screw rotatably mounted on the top of the hollow support seat and located in the fixed square tube, a T-shaped adjusting piece threadedly connected to the adjusting screw and a worm fixedly sleeved on the bottom end of the adjusting screw, and the two worms are in meshing engagement with the two worms, respectively.

[0013] Preferably, the two T-shaped adjusting pieces are in sliding connection with the two fixed square tubes, respectively, and the top outer wall of each of the two T-shaped adjusting pieces is fixedly connected with the bottom outer wall of the rotary kiln body.

[0014] The rotary kiln has the advantages that:

[0015] 1. The speed-adjustable feeding mechanism is provided, the rotating speed of the variable speed motor can be adjusted through the frequency converter, the feeding speed can be flexibly adjusted according to the processing condition of the steel slag in the rotary kiln, the material accumulation caused by the non-timely processing of the steel slag in the rotary kiln due to the excessively fast feeding speed is reduced, the entering steel slag can be effectively ensured to be uniformly heated in the kiln, and the steel slag recovery effect is improved.

[0016] 2. The height adjusting mechanism is provided, the two threaded lifting assemblies are synchronously operated through the servo motor, and the working height of the rotary kiln body can be flexibly adjusted to meet different use requirements on the spot. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall front view of the utility model;

[0018] Figure 2 It is a schematic diagram of the sectional structure of the local vertical section of the utility model;

[0019] Figure 3 It is a schematic diagram of the sectional structure of the local vertical section of the utility model; Figure 1 It is a schematic diagram of the enlarged structure of the middle A part of the utility model;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of the meshing area of the worm and the worm gear in the utility model;

[0021] Figure 5The utility model discloses a three -dimensional amplification structure schematic diagram of adjusting screw rod and T type adjusting spare in fixed square tube connection.

[0022] In the figure: 1, rotary kiln body; 2, mounting bracket; 3, steel slag conveying cylinder; 4, shaft body; 5, auger conveying blade; 6, frequency conversion speed regulator; 7, motor fixing plate; 8, variable speed motor; 9, drive gear; 10, transmission gear; 11, feeding hopper; 12, feed pipe; 13, hollow support seat; 14, motor mounting plate; 15, servo motor; 16, transmission shaft; 17, worm; 18, fixed square tube; 19, adjusting screw rod; 20, T type adjusting spare; 21, worm wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Embodiment 1, refer to Figures 1-3 , steel slag recovery rotary kiln, including the mounting bracket 2 of welding in rotary kiln body 1 lateral wall, be equipped with adjustable speed feeding mechanism on the mounting bracket 2;

[0025] In the embodiment, the adjustable speed feeding mechanism includes a steel slag conveying cylinder 3 welded to the top outer wall of the mounting bracket 2, a shaft body 4 rotatably installed in the steel slag conveying cylinder 3, an auger conveying blade 5 welded to the shaft body 4 and located in the steel slag conveying cylinder 3, a variable speed drive assembly and a frequency conversion speed regulator 6 fixedly installed on the mounting bracket 2;

[0026] Further, the variable speed drive assembly includes a motor fixing plate 7 welded to the side wall of the mounting bracket 2, a variable speed motor 8 fixedly installed on the top outer wall of the motor fixing plate 7, a drive gear 9 fixedly sleeved on the output shaft of the variable speed motor 8 and a transmission gear 10 fixedly sleeved on the shaft body 4, the drive gear 9 and the transmission gear 10 are engaged with each other, and the frequency conversion speed regulator 6 is electrically connected with the variable speed motor 8;

[0027] Further, the top front end of the steel slag conveying cylinder 3 is fixedly connected with a feeding hopper 11, and the bottom rear end of the steel slag conveying cylinder 3 is provided with a feed pipe 12 communicated with the feeding port of the rotary kiln body 1;

[0028] In the specific implementation of the embodiment, first, the steel slag to be recovered is added into the steel slag conveying cylinder 3 from the feeding hopper 11, at this time, the drive gear 9 is rotated by controlling the variable speed motor 8, then the transmission gear 10 engaged with the drive gear 9 drives the auger conveying blade 5 on the shaft body 4 to rotate in the steel slag conveying cylinder 3, so that the steel slag can be automatically conveyed, and finally the steel slag is automatically fed into the rotary kiln body 1 from the feed pipe 12;

[0029] Secondly, the rotating speed of the variable speed motor 8 can be adjusted through the frequency converter 6, and then the feeding speed can be flexibly adjusted according to the processing condition of the steel slag in the rotary kiln, so that the material accumulation caused by the overfast feeding speed and the delayed processing of the steel slag in the rotary kiln is reduced, and the entering steel slag can be effectively ensured to be evenly heated in the kiln, which is beneficial to improving the steel slag recovery effect.

[0030] Embodiment 2, refer to Figures 1-2 and Figures 4-5 This embodiment is optimized on the basis of Embodiment 1, specifically, the bottom of the rotary kiln body 1 is provided with a height adjusting mechanism.

[0031] In this embodiment, the height adjusting mechanism comprises a hollow support seat 13 provided with two threaded lifting assemblies, a motor mounting plate 14 welded to the side wall of the hollow support seat 13, a servo motor 15 fixedly installed on the top outer wall of the motor mounting plate 14, a transmission shaft 16 rotatably installed in the hollow support seat 13, and two worm gears 17 fixedly sleeved on the transmission shaft 16.

[0032] Further, each of the two threaded lifting assemblies comprises a fixed square tube 18 welded to the top outer wall of the hollow support seat 13, an adjusting screw rod 19 rotatably installed on the top of the hollow support seat 13 and located in the fixed square tube 18, a T-shaped adjusting piece 20 threadedly connected to the adjusting screw rod 19, and a worm wheel 21 fixedly sleeved on the bottom end of the adjusting screw rod 19, the two worm gears 17 are respectively engaged with the two worm wheels 21, the two T-shaped adjusting pieces 20 are respectively slidably connected with the two fixed square tubes 18, and the top outer walls of the two T-shaped adjusting pieces 20 are fixedly connected with the bottom outer wall of the rotary kiln body 1.

[0033] In the specific implementation of this embodiment: the two worm gears 17 on the transmission shaft 16 are controlled by the servo motor 15 to rotate forward or reverse, then the two worm wheels 21 engaged with the two worm gears 17 drive the two adjusting screw rods 19 to rotate forward or reverse, then the two T-shaped adjusting pieces 20 threadedly connected with the two adjusting screw rods 19 drive the rotary kiln body 1 to move up and down, so that the working height of the rotary kiln body 1 can be flexibly adjusted to meet different use requirements on site.

[0034] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotary kiln for steel slag recycling, comprising a mounting frame (2) welded to the side wall of the rotary kiln body (1), characterized in that, The mounting frame (2) is equipped with a speed-adjustable feeding mechanism, and the bottom of the rotary kiln body (1) is equipped with a height adjustment mechanism; The speed-adjustable feeding mechanism includes a steel slag conveying cylinder (3) welded to the top outer wall of the mounting frame (2), a shaft (4) rotatably installed inside the steel slag conveying cylinder (3), an auger conveying blade (5) welded to the shaft (4) and located inside the steel slag conveying cylinder (3), a variable speed drive assembly, and a frequency converter (6) fixedly installed on the mounting frame (2). The variable speed drive assembly includes a motor mounting plate (7) welded to the side wall of the mounting bracket (2), a variable speed motor (8) fixedly mounted on the top outer wall of the motor mounting plate (7), a drive gear (9) fixedly mounted on the output shaft of the variable speed motor (8), and a transmission gear (10) fixedly mounted on the shaft (4).

2. The steel slag recycling rotary kiln according to claim 1, characterized in that, The top front end of the steel slag conveying cylinder (3) is fixedly connected to a feeding hopper (11), and the bottom rear end of the steel slag conveying cylinder (3) is provided with a feeding pipe (12) connected to the feed inlet of the rotary kiln body (1).

3. The steel slag recycling rotary kiln according to claim 1, characterized in that, The drive gear (9) meshes with the transmission gear (10), and the frequency converter (6) is electrically connected to the variable speed motor (8).

4. The steel slag recycling rotary kiln according to claim 1, characterized in that, The height adjustment mechanism includes a hollow support base (13) with two threaded lifting components, a motor mounting plate (14) welded to the side wall of the hollow support base (13), a servo motor (15) fixedly installed on the top outer wall of the motor mounting plate (14), a transmission shaft (16) rotatably installed in the hollow support base (13), and two worm gears (17) fixedly mounted on the transmission shaft (16).

5. The steel slag recycling rotary kiln according to claim 4, characterized in that, Both of the aforementioned threaded lifting assemblies include a fixed square tube (18) welded to the top outer wall of the hollow support base (13), an adjusting screw (19) rotatably installed on the top of the hollow support base (13) and located inside the fixed square tube (18), a T-shaped adjusting piece (20) threadedly connected to the adjusting screw (19), and a worm gear (21) fixedly fitted on the bottom end of the adjusting screw (19), and the two worms (17) respectively mesh with the two worm gears (21).

6. The steel slag recycling rotary kiln according to claim 5, characterized in that, The two T-shaped adjusting members (20) are slidably connected to the two fixed square tubes (18) respectively, and the top outer wall of the two T-shaped adjusting members (20) is fixedly connected to the bottom outer wall of the rotary kiln body (1).

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