Crushing disc of horizontal impact mill

Abstract

The utility model discloses a horizontal impact mill crushing disc which comprises a base, the top of the base is fixedly connected with a cylinder, the top of the base is further fixedly connected with a transmission device through a rack, the output end of the transmission device is arranged in the cylinder and is provided with a crushing assembly, the other side of the cylinder is fixedly provided with a grading device, and the grading device is provided with a crushing assembly. Due to the arrangement of the flow drainage holes and the flow guide plates on the crushing disc and the flow guide effect of the flow guide plates, when the crushing disc rotates at a high speed, the pressure of the circle center part of the crushing disc is lower than that of the outer circumference in the radius direction, and the crushing disc rotates at a high speed. According to the utility model, one part of air entering the crushing area is led in from the drainage holes, the total air volume is drained, the airflow speed of the crushing area is reduced, the retention time of materials in the crushing area is prolonged, and unqualified solid material particles are easier to return to the crushing area to be continuously crushed under the flow guide action of the flow guide plate, so that the crushing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing equipment, in particular to a horizontal impact mill crushing disc. Background Technique

[0002] At present, the horizontal impact mill used for dry ultra-fine crushing of solid materials includes a feeding (air) pipe, a frame, a transmission device, a secondary air inlet, a crushing assembly, a stator lining plate, a cylinder body, a classification device, etc. The crushing assembly includes a crushing disc a and hammers b arranged on both sides thereof (as Figure 4 and Figure 5 shown). The hammers b on the crushing disc a and the stator lining plate 6 form a crushing pair. When the material passes through the crushing pair under the action of negative-pressure air through the feeding (air) pipe, it is crushed. The feeding (air) pipe and the secondary air inlet of this machine are arranged on the left side of the crushing disc, and the classification device is on the right side of the crushing disc. The material to be crushed and the total air volume required by the system have to pass through the crushing area formed by the crushing disc and the stator lining plate and move towards the classification device. After classification, the solid material particles meeting the fineness requirements are discharged from the discharging (air) port of the machine body. Since the gap between the hammer and the stator lining plate is small, the air flow velocity at this place is very large, resulting in a very short residence time of the material in the crushing area, which is contrary to the design concept that the material needs to be crushed in the crushing area. At the same time, the large air flow velocity in the crushing area makes it difficult for the coarse particles of the classified solid material to return to the crushing area for continued crushing, which not only seriously affects the crushing efficiency, but even makes some difficult-to-crush materials unable to reach the required fineness. Therefore, it is necessary to design a horizontal impact mill crushing disc to solve the problems raised in the above background technique. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a horizontal impact mill crushing disc, aiming to solve the problems in the prior art that there is a large air flow velocity in the crushing area, resulting in a very short residence time of the material in the crushing area, making it difficult for the classified coarse particles to return to the crushing area for continued crushing, which not only seriously affects the crushing efficiency, but even makes some difficult-to-crush materials unable to reach the required fineness.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A horizontal impact mill crushing disc, including a base, the top of the base is fixedly connected with a cylinder body, the top of the base is also fixedly connected with a transmission device through a frame, the output end of the transmission device is placed inside the cylinder body and is equipped with a crushing assembly, and a classification device is fixedly installed on the other side of the cylinder body;

[0006] The crushing assembly includes a crushing disk fixedly connected to the output end of the transmission device. On the outer circles on both sides of the crushing disk, multiple groups of hammer heads are fixedly connected at equal intervals in the circumferential direction. A deflector is fixedly connected to one side of the crushing disk close to the classification device, and a drain hole is formed near the center of the crushing disk.

[0007] Preferably, the multiple groups of hammer heads on both sides of the crushing disk are staggeredly distributed, and each group of hammer heads is provided with two.

[0008] Preferably, the distance between the two hammer heads in each group gradually increases from the outer circle of the crushing disk towards its center.

[0009] Preferably, the number of the deflectors is the same as that of the multiple groups of hammer heads on the same side and their positions correspond one by one. The deflectors are arranged in an arc shape from the center of the crushing disk towards the hammer heads.

[0010] Preferably, the number of the drain holes is the same as that of the deflectors, and one drain hole is arranged at each deflector.

[0011] Preferably, a stator lining plate is installed inside the cylinder body at the position of the crushing assembly. The stator lining plate is used in cooperation with the hammer heads. An installation groove for accommodating the stator lining plate is annularly formed on the inner wall of the cylinder body. Outer edge ring plates are arranged on both sides of the stator lining plate, and multiple groups of retaining plates for pressing the outer edge ring plates are fixedly connected to both sides of the stator lining plate on the inner wall of the cylinder body.

[0012] Preferably, a feed pipe and a secondary air inlet are fixedly connected to one side of the cylinder body, and a discharge port is arranged on the classification device.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Through the arrangement of the drain holes and the deflectors on the crushing disk of the present utility model, due to the guiding effect of the deflectors, when the crushing disk rotates at a high speed, along the radial direction, the pressure at the center of the crushing disk is lower than that of the outer circumference. Part of the air entering the crushing area is introduced from the drain holes, and the total air volume is drained, reducing the air flow speed in the crushing area and prolonging the residence time of the material in this area. After the crushed solid material moves with the air flow to the classification device for classification, the qualified solid material particles are discharged, and the unqualified solid material particles are more likely to return to the crushing area formed by the hammer heads and the stator lining plate under the guiding effect of the deflectors for continuous crushing, thereby improving the crushing efficiency. By gradually increasing the distance between the two hammer heads in each group from the outer circle of the crushing disk towards its center, the air flow is accelerated when flowing through the deflector to the gap between the two hammer heads, and collides with the air flow coming from the gap between the hammer heads and the stator lining plate, improving the crushing efficiency. Description of the Drawings

[0015] Figure 1It is a schematic diagram of the overall structure of the horizontal impact mill crushing disc;

[0016] Figure 2 It is a schematic diagram of the structure of the crushing component;

[0017] Figure 3 It is Figure 1 an enlarged schematic diagram of the structure of area A in

[0018] Figure 4 It is a schematic diagram of the structure of the crushing component in the prior art;

[0019] Figure 5 It is a schematic diagram of the cooperation structure between the crushing component and the stator liner in the prior art.

[0020] In the figure: 1, base; 2, cylinder; 3, feed pipe; 4, transmission device; 41, frame; 5, crushing component; 51, crushing disc; 52, hammer head; 53, deflector; 54, discharge hole; 6, stator liner; 61, retaining plate; 7, secondary air inlet; 8, classification device; 81, discharge port. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0022] Please refer to Figures 1-3 , this embodiment provides a horizontal impact mill crushing disc, including a base 1, a cylinder 2 is fixedly connected to the top of the base 1, a transmission device 4 is also fixedly connected to the top of the base 1 through a frame 41, the output end of the transmission device 4 is placed inside the cylinder 2 and a crushing component 5 is installed, a stator liner 6 is installed inside the cylinder 2 at the position of the crushing component 5, the stator liner 6 is used in cooperation with the hammer head 52, a feed pipe 3 and a secondary air inlet 7 are fixedly connected to one side of the cylinder 2, a classification device 8 is fixedly installed on the other side of the cylinder 2, a discharge port 81 is provided on the classification device 8, solid materials are transported into the inside of the cylinder 2 through the feed pipe 3, the crushing component 5 is driven to rotate by the transmission device 4, and under the action of negative pressure air, it passes through the crushing pair formed by the crushing component 5 and the stator liner 6 to crush the solid materials, the classification device 8 classifies the crushed solid material particles, after classification, the solid material particles meeting the fineness requirements are discharged from the discharge port 81 of the machine body, and the solid material particles not meeting the fineness requirements continue to be crushed by the crushing component 5 and the stator liner 6 until all the solid material particles meet the fineness requirements and are discharged.

[0023] In this embodiment, as Figure 2 shown, the crushing assembly 5 includes a crushing disk 51 fixedly connected to the output end of the transmission device 4. On the outer circumferences on both sides of the crushing disk 51, a plurality of groups of hammers 52 are fixedly connected at equal intervals in the circumferential direction. Each group of hammers 52 has two. The multiple groups of hammers 52 on both sides of the crushing disk 51 are staggeredly distributed. By the staggered distribution of the multiple groups of hammers 52 on both sides, the multiple groups of hammers 52 alternately contact the stator lining 6 for crushing, improving the crushing effect.

[0024] In this embodiment, as Figure 2 shown, a deflector 53 is fixedly connected to one side of the crushing disk 51 close to the classification device 8. The number of deflectors 53 is the same as the number of the multiple groups of hammers 52 on the same side and their positions correspond one by one. The deflector 53 is arranged in an arc shape from the center of the crushing disk 51 towards the hammers 52. Through the setting of the deflector 53, after the crushed solid materials move to the classification device 8 with the airflow for classification, the qualified solid material particles are discharged, and the unqualified solid material particles are more likely to return to the crushing area formed by the hammers 52 and the stator lining 6 under the guiding action of the deflector 53 for continuous crushing, thereby improving the crushing efficiency.

[0025] In this embodiment, as Figure 2 shown, the distance between the two hammers 52 in each group gradually increases from the outer circumference of the crushing disk 51 towards its center, so that the airflow is accelerated when flowing through the gap between the two hammers 52 after flowing through the deflector 53 and collides with the airflow coming from the gap between the hammers 52 and the stator lining 6, improving the crushing efficiency.

[0026] In this embodiment, as Figure 2 shown, a drainage hole 54 is opened near the center of the crushing disk 51. The number of drainage holes 54 is the same as the number of deflectors 53, and one drainage hole 54 is arranged at each deflector 53. Due to the guiding action of the deflector 53, when the crushing disk 51 rotates at a high speed, along the radial direction, the pressure at the center of the crushing disk 51 is lower than that of the outer circumference, so that part of the air entering the crushing area is introduced from the drainage hole 54, and the total air volume is drained, reducing the airflow speed in the crushing area and prolonging the residence time of the materials in this area.

[0027] In this embodiment, as Figure 3 shown, an installation groove for accommodating the stator lining 6 is annularly opened on the inner wall of the cylinder body 2. Outer edge ring plates are arranged on both sides of the stator lining 6, and a plurality of groups of retaining plates 61 for pressing the outer edge ring plates are fixedly connected to the inner wall of the cylinder body 2 on both sides of the stator lining 6. Through the setting of the installation groove and the retaining plates 61, the stator lining 6 is limited and fixed at a specified position, improving its installation stability.

[0028] Working principle: When in use, solid materials are conveyed into the interior of the cylinder body 2 through the feeding pipe 3. The crushing assembly 5 is driven to rotate by the transmission device 4. Under the action of negative-pressure air, the solid materials pass through the crushing pair formed by the crushing assembly 5 and the stator lining plate 6 to achieve crushing. The classified device 8 classifies the crushed solid material particles. Due to the arrangement of the drainage holes 54 on the crushing disc 51 and the guide plate 53, due to the guiding action of the guide plate 53, when the crushing disc 51 rotates at a high speed, along the radial direction, the pressure at the center of the crushing disc 51 is lower than that of the outer circumference. Part of the air entering the crushing area is introduced from the drainage holes 54, and the total air volume is drained, reducing the air flow speed in the crushing area and prolonging the residence time of the materials in this area. After the crushed solid materials move with the air flow to the classified device 8 for classification, the qualified solid material particles are discharged, and the unqualified solid material particles are more likely to return to the crushing area formed by the hammer heads 52 and the stator lining plate 6 to continue crushing under the guiding action of the guide plate 53, thereby improving the crushing efficiency. By gradually increasing the distance between the two hammer heads 52 in each group from the outer circle of the crushing disc 51 towards its center, the air flow is accelerated when flowing through the gap between the two hammer heads 52 through the guide plate 53 and collides with the air flow coming from the gap between the hammer heads 52 and the stator lining plate 6, improving the crushing efficiency.

[0029] The above embodiments are the preferred implementation schemes of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution of the present utility model is within the protection scope of the present utility model.

Claims

1. A horizontal impact mill crushing disc, characterized in that: It includes a base (1), a cylinder body (2) is fixedly connected to the top of the base (1), a transmission device (4) is also fixedly connected to the top of the base (1) through a frame (41), the output end of the transmission device (4) is placed inside the cylinder body (2) and is equipped with a crushing component (5), and a grading device (8) is fixedly installed on the other side of the cylinder body (2); The crushing component (5) includes a crushing disc (51) fixedly connected to the output end of the transmission device (4), a plurality of groups of hammer heads (52) are fixedly connected at equal intervals along the circumferential direction on the outer circles on both sides of the crushing disc (51), a guide plate (53) is fixedly connected to the side of the crushing disc (51) close to the grading device (8), and a flow discharge hole (54) is opened near the center of the crushing disc (51).

2. The horizontal impact mill crushing disc according to claim 1, wherein: The multiple groups of hammer heads (52) on both sides of the crushing disc (51) are arranged in a staggered manner, and each group of the hammer heads (52) is provided with two.

3. The horizontal impact mill crushing disc according to claim 2, characterized in that: The distance between the two hammer heads (52) in each group gradually increases from the outer circle of the crushing disc (51) towards the center of the disc.

4. The horizontal impact mill crushing disc according to claim 3, wherein: The number of the guide plates (53) is the same as the number of the multiple groups of hammer heads (52) on the same side and their positions correspond one by one. The guide plates (53) are arranged in an arc shape from the center of the crushing disc (51) towards the direction of the hammer heads (52).

5. A horizontal impact mill crushing disc according to claim 4, characterized in that: The number of the flow discharge holes (54) is the same as the number of the guide plates (53), and one flow discharge hole (54) is arranged at each guide plate (53).

6. The horizontal impact mill crushing disc according to claim 1, wherein: A stator lining plate (6) is installed inside the cylinder body (2) at the position of the crushing component (5). The stator lining plate (6) is used in cooperation with the hammer heads (52). An installation groove for accommodating the stator lining plate (6) is annularly opened on the inner wall of the cylinder body (2). Outer edge ring plates are arranged on both sides of the stator lining plate (6), and a plurality of groups of retaining plates (61) for pressing the outer edge ring plates are fixedly connected to the inner wall of the cylinder body (2) on both sides of the stator lining plate (6).

7. A horizontal impact mill crushing disc according to claim 1, characterized in that: A feed pipe (3) and a secondary air inlet (7) are fixedly connected to one side of the cylinder body (2), and a discharge port (81) is arranged on the grading device (8).

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