Device for crushing large pellets and disc pelletizer with same

Abstract

The utility model discloses a device for crushing large pellets and a disc pelletizer with the device, and the device comprises a fixed frame (1), a first cantilever (2) hinged with the fixed frame (1), a telescopic mechanism (3) of which the two ends are respectively hinged with the fixed frame (1) and the first cantilever (2), a second cantilever (4) connected with the first cantilever (2), and fixed rake teeth (5) connected with the second cantilever (4), the gear motor (6) is connected with the first cantilever (2), and the rotating disc (7) is pivoted with the first cantilever (2) and is in transmission connection with the gear motor (6); and the plurality of rotary harrow teeth (8) are connected with the turntable (7). According to the technical scheme provided by the utility model, large balls are sheared and crushed, the crushing efficiency is high, the crushing effect is better, the crushed large balls can be effectively prevented from forming large balls again, the influence on qualified balls and small balls in the forming process is smaller, and the pelletizing efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disk pelletizers, in particular to a device for crushing large pellets; the utility model also relates to a disk pelletizer. Background Art

[0002] The disk pelletizer is an important device in the pellet production process and is widely used in industrial fields such as iron and steel, non-ferrous metallurgy, cement, and fertilizers.

[0003] During the production process, the inclined ball plate of the disk pelletizer rotates by mechanical drive. The mixture with sprayed water rolls into balls in the ball plate and is thrown out to the receiving tray under the action of centrifugal force. The formed balls fall from the receiving tray onto the conveyor belt. After screening, the qualified pellets enter the next process, and the unqualified pellets are returned to the mixer for further processing. Although the size of the pellets can be controlled by adjusting the inclination angle, large balls are likely to be formed due to multiple factors such as the amount of added water and the wear of the scraper. These large balls always linger in the ball discharging or ball growing area of the ball plate with the rotation of the ball plate and are difficult to be thrown out to the receiving tray with the normal material flow, which will affect the growth of small balls to a certain extent, and even break the small balls, thus affecting the pelletizing production efficiency and production load and increasing energy consumption. Therefore, it is necessary to timely remove the large balls during the pellet forming process and try to avoid the generation of large balls and the long-term stay of large balls in the disk.

[0004] Currently, for the treatment of large pellets in the disk, there is still the method of manual cleaning, that is, manually raking out the pellets exceeding the normal diameter with a multi-tooth rake. The labor intensity is large during the cleaning process, and the rake tool is likely to be hooked with accessories such as the scraper of the pelletizing disk during operation, resulting in the rake slipping out of the hand, posing a relatively large safety risk. There are also devices installed in the ball plate to break large pellets. Although it avoids the danger of manual crushing, there are the following problems:

[0005] The crushing efficiency is relatively low;

[0006] It still cannot avoid crushing some qualified balls, reducing the pelletizing efficiency;

[0007] It is greatly affected by the material situation, and the crushing effect becomes worse.

[0008] In view of this, it is necessary to provide a device for removing large pellets in the disk pelletizer, which can at least solve or alleviate one of the above defects in the prior art. Content of the Utility Model

[0009] The utility model aims to solve at least one defect existing in the prior art. For this reason, on the one hand, the purpose of the utility model is to propose a device for crushing large pellets, which can solve the technical problems of large labor intensity and safety risks during the process of manually cleaning large pellets, and can also solve the technical problems such as low crushing efficiency of the large pellet crushing device arranged in the ball plate.

[0010] To solve the above technical problems, the present utility model provides a device for crushing large pellets, which includes a fixed frame for connecting with a disc pelletizer, a first cantilever with its first end hinged to the fixed frame, a telescopic mechanism with both ends hinged to the fixed frame and the first cantilever respectively, a second cantilever with its first end connected to the other end of the first cantilever, a fixed rake tooth connected to the other end of the second cantilever, a reduction motor connected to the other end of the first cantilever, and a turntable pivotally connected to the other end of the first cantilever and drivingly connected to the reduction motor; a plurality of rotating rake teeth connected to the turntable; the rake teeth of the rotating rake teeth can pass through the gaps between the rake teeth of the fixed rake teeth.

[0011] As a further improved technical solution, in the device for crushing large pellets provided by the present utility model, the lower part of the rotating rake teeth has a "7"-shaped hook.

[0012] As a further improved technical solution, in the device for crushing large pellets provided by the present utility model, when the number of sets of rotating rake teeth is more than two, the radian between each rotating rake tooth is equal, and the rotating rake teeth are arranged in equal radian.

[0013] As a further improved technical solution, in the device for crushing large pellets provided by the present utility model, there is also a clamp block detachably connected to the turntable for installing the rotating rake teeth; the installation height of the rotating rake teeth can be adjusted.

[0014] On the other hand, the purpose of the present utility model is to propose a disc pelletizer, by setting the device for crushing large pellets on the disc pelletizer, it can solve the technical problems of high labor intensity and safety risks during the manual cleaning of large pellets, and can also solve the technical problems such as low crushing efficiency of setting a large pellet crushing device in the ball plate.

[0015] To solve the above technical problems, the present utility model provides a disc pelletizer, which has the device for crushing large pellets described in any one of the above.

[0016] Without conflict, the above-mentioned improved or preferred technical solutions can be implemented alone or in combination.

[0017] The technical solution provided by the present utility model rakes large pellets towards the fixed rake teeth through the rotating rake teeth. When the rotating rake teeth pass through the fixed rake teeth, the large spheres are sheared and crushed. The crushing efficiency is high, the crushing effect is good, and it can effectively prevent the large pellets after crushing from forming large pellets again. It has little influence on qualified spheres and small spheres during the forming process, and can improve the pelletizing efficiency. It solves the technical problems of high labor intensity and high safety risks during the manual cleaning of large pellets, and also brings technical problems such as reduced pelletizing efficiency and higher maintenance costs. The telescopic mechanism is set to facilitate the adjustment of the turntable position, so that the working area of the rotating rake teeth is located in the dense area of large pellets. Brief Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 It is a top view structural diagram of a disk pelletizer in an embodiment;

[0020] Figure 2 It is a three-dimensional structural diagram of a device for crushing large pellets in an embodiment. Detailed Embodiment

[0021] The present utility model will be further described below with reference to the drawings.

[0022] As one of the embodiments, as shown in Figure 1 the disk pelletizer, there is a device for crushing large pellets. The device for crushing large pellets includes a fixed frame 1 for connecting with the disk pelletizer, a first cantilever 2 hinged at the first end to the fixed frame 1, a telescopic mechanism 3 hinged at both ends to the fixed frame 1 and the first cantilever 2 respectively, a second cantilever 4 connected at the first end to the other end of the first cantilever 2, a fixed rake tooth 5 connected to the other end of the second cantilever 4, a reduction motor 6 connected to the other end of the first cantilever 2, and a turntable 7 pivotally connected to the other end of the first cantilever 2 and drivingly connected to the reduction motor 6; a plurality of rotating rake teeth 8 connected to the turntable 7; the rake teeth of the rotating rake teeth 8 can pass through the gaps between the rake teeth of the fixed rake teeth 5.

[0023] In the embodiment, the fixed frame 1 is fixed to the mounting seat of the disk pelletizer by bolts. The telescopic mechanism 3 is selected as an electric push rod. The two ends of the telescopic mechanism 3 are hinged, so that the telescopic mechanism 3 can swing freely within a certain range. The telescopic movement of the telescopic mechanism 3 drives the first cantilever 2 to swing, thereby adjusting the positions of the turntable 7, the fixed rake teeth 5, and the rotating rake teeth 8, so that the fixed rake teeth 5 and the rotating rake teeth 8 are located in the area where large pellets are concentrated. The reduction motor 6 drives the turntable 7 to rotate, thereby driving the rotating rake teeth 8 to rotate. The rotating rake teeth 8 can allow qualified spheres and small spheres during the forming process to pass through. The rotating rake teeth 8 rake the large pellets towards the fixed rake teeth 5. When the rotating rake teeth 8 pass through the fixed rake teeth 5, the qualified spheres and small spheres during the forming process can pass through the fixed rake teeth 5, while the large spheres are broken during the shearing process between the rotating rake teeth 8 and the fixed rake teeth 5.

[0024] The technical solution provided by the present utility model uses the rotating rake teeth 8 to rake large balls towards the fixed rake teeth 5. When the rotating rake teeth 8 pass through the fixed rake teeth 5, the large spheres are sheared and broken, with high crushing efficiency and good crushing effect, effectively preventing the re - formation of large pellets from the broken large pellets. It has little impact on qualified spheres and small spheres during the forming process, and can improve the pelletizing efficiency. It solves the technical problems of high labor intensity and high safety risks during the manual cleaning of large pellets, but also brings technical problems such as reduced pelletizing efficiency and higher maintenance costs. The telescopic mechanism 3 is provided to conveniently adjust the position of the turntable, so that the working area of the rotating rake teeth 8 is located in the dense area of large pellets.

[0025] As another embodiment, as Figure 2 shown in the device for crushing large pellets, the lower part of the rotating rake teeth has a "7" - shaped hook. The "7" - shaped hook at the lower part of the rotating rake teeth is convenient for grasping large pellets and can also extend the service life of the rotating rake teeth.

[0026] As another embodiment, as Figure 2 shown in the device for crushing large pellets, when the number of the rotating rake teeth 8 is more than two sets, the radian between each rotating rake teeth 8 is equal, and the rotating rake teeth 8 are arranged in an equal - radian pattern. The equal - radian arrangement of the rotating rake teeth 8 is beneficial to the balance of force.

[0027] As another embodiment, as Figure 2 shown in the device for crushing large pellets, it also has a clamping block 9 detachably connected to the turntable 7 for installing the rotating rake teeth 8; the installation height of the rotating rake teeth 8 can be adjusted. The clamping block 9 fixes the rotating rake teeth 8 on the turntable 7, and the clamping block 9 is detachably connected to the turntable 7, which is convenient for adjusting the installation height of the rotating rake teeth 8.

[0028] The present utility model is not limited to the above - preferred embodiments. It can also be transformed and improved in various forms within the spirit defined by the claims and the description of the present utility model, which can solve the same technical problems and achieve the expected technical effects, so it will not be repeated. All solutions that can be directly or associatively thought of by those of ordinary skill in the art from the disclosed content of the present utility model, as long as they are within the spirit defined by the claims, also belong to the protection scope of the present utility model.

Claims

1. A device for crushing large pellets, comprising a fixed frame (1) for connecting to a disc pelletizing machine, a first cantilever (2) hinged to the fixed frame (1) at a first end, and a telescopic mechanism (3) hinged to the fixed frame (1) and the first cantilever (2) at two ends, characterized in that: It also comprises a second cantilever (4) whose first end is connected to the other end of the first cantilever (2), a fixed rake tooth (5) connected to the other end of the second cantilever (4), a reduction motor (6) connected to the other end of the first cantilever (2), a rotating disk (7) pivotally connected to the other end of the first cantilever (2) and transmission-connected to the reduction motor (6); and a plurality of rotating rake teeth (8) connected to the rotating disk (7); the rake teeth of the rotating rake teeth (8) can pass through the gaps between the rake teeth of the fixed rake teeth (5).

2. The device for crushing large pellets according to claim 1, characterized in that: The lower part of the rotating rake tooth (8) is provided with a "7"-shaped hook.

3. The device for crushing large pellets according to claim 1, characterized in that: When the number of the rotating rake teeth (8) is greater than two sets, the arcs between the rotating rake teeth (8) are equal, and the rotating rake teeth (8) are arranged in equal arcs.

4. The device for crushing large pellets according to claim 1, characterized in that: It also has a clamping block (9) which is detachably connected to the rotating disk (7) and is used to install the rotating rake teeth (8); the installation height of the rotating rake teeth (8) can be adjusted.

5. A disc pelletizing machine, characterized in that: A device for crushing large pellets according to any one of claims 1 to 4.

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