Crushing pair of mechanical mill

Abstract

A crushing pair of a mechanical mill relates to the technical field of crushing devices and comprises a stator gear ring, a crushing disc is rotatably arranged in the stator gear ring, and a plurality of crushing hammers are uniformly distributed at positions, close to an outer ring, of the crushing disc; the crushing hammer comprises an extension crushing section extending to the position between the crushing disc and the stator gear ring, and the distance between the outer ring of the crushing disc and the stator gear ring is enlarged through the extension crushing section. The problems that in the prior art, smashing hammers are evenly distributed on the upper surface of a smashing disc, close to the outer edge and keep a relatively small distance from a stator gear ring, the airflow flow speed between the smashing hammers and the stator gear ring is high, and therefore the efficiency of collision and friction between materials and grinding blocks and the gear ring is reduced, and the grinding efficiency is reduced are solved. And the crushing effect on materials such as graphite is not ideal.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing devices, and particularly relates to a mechanical grinding crushing pair. Background Art

[0002] As a common fine powder crushing equipment, a mechanical impact mill is widely used in the fine powder processing industry. Its crushing principle is: the material after coarse crushing is put into the mechanical grinding cavity, and the crushing disk with hammers fixed on the outer periphery is driven by the motor to rotate at a high speed. After being impacted by the hammers, it impacts the tooth part of the stator gear ring and is ground and sheared between the materials, causing volume crushing and surface crushing. Finally, the crushed appropriate material particles are selected and collected. The crushing disk, the hammers and the stator gear ring form the most basic crushing pair.

[0003] As Figure 4 shown, a crushing pair is disclosed in the prior art, which includes a crushing disk 100, crushing hammers 200 and a stator gear ring 300. The crushing disk is driven by the motor to rotate at a high speed. After being impacted by the crushing hammers, it impacts the tooth part of the stator gear ring and is ground and sheared between the materials, causing volume crushing and surface crushing.

[0004] With the use of the existing device, the deficiencies of this technology have gradually emerged, mainly manifested in the following aspects:

[0005] The crushing hammers are evenly distributed on the upper surface of the crushing disk and close to the outer edge position, maintaining a relatively small distance from the stator gear ring. The air flow velocity between the crushing hammers and the stator gear ring is relatively high, thereby reducing the efficiency of the material impacting and rubbing against the grinding block and the gear ring, and the crushing effect on materials similar to graphite is not ideal.

[0006] To sum up, it is obvious that the prior art has inconveniences and defects in actual use, so it is necessary to improve. Content of the Utility Model

[0007] Aiming at the defects in the prior art, the utility model solves the problem that in the traditional technology, the crushing hammers are evenly distributed on the upper surface of the crushing disk, close to the outer edge position, maintaining a relatively small distance from the stator gear ring, the air flow velocity between the crushing hammers and the stator gear ring is relatively high, thereby reducing the efficiency of the material impacting and rubbing against the grinding block and the gear ring, and the crushing effect on materials similar to graphite is not ideal.

[0008] To solve the above problems, the utility model provides the following technical solutions:

[0009] A mechanical grinding crushing pair, including a stator gear ring, a crushing disk is rotatably arranged inside the stator gear ring, and a plurality of crushing hammers are evenly distributed at positions close to the outer ring of the crushing disk;

[0010] The crushing hammer includes an extended crushing section extending between the crushing disc and the stator gear ring, and the spacing between the outer ring of the crushing disc and the stator gear ring is enlarged through the extended crushing section.

[0011] As an optimized solution, the lower end of the extended crushing section extends to the outer ring of the stator gear ring.

[0012] As an optimized solution, a connecting section is horizontally and fixedly connected to the extended crushing section, and the connecting section is fixed to the upper surface of the crushing disc.

[0013] As an optimized solution, a plurality of bolt holes are arranged in parallel on the connecting section, bolts are inserted into the bolt holes, and the connecting section is fixed to the crushing disc by the bolts.

[0014] As an optimized solution, an inclined top surface is provided at the upper corner of the extended crushing section close to the center of the crushing disc.

[0015] As an optimized solution, the connecting section is located on the back surface of the extended crushing section.

[0016] As an optimized solution, an inclined side surface is provided on the outer wall of the connecting section facing the stator gear ring, and one end of the inclined side surface on the outer side is connected to the back surface of the extended crushing section.

[0017] As an optimized solution, a reinforcing rib connected to the extended crushing section is also fixedly connected to the upper surface of the connecting section.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] By using the extended crushing section and its lower end extending to the outer ring of the stator gear ring, the grinding functions can be realized on both the upper and lower surfaces of the crushing disc, improving the grinding ability of the hammer head;

[0020] The diameter of the crushing disc is reduced, which can increase the gap between the crushing disc and the gear ring, thereby reducing the air material flow velocity between the crushing disc and the gear ring, and further increasing the probability of the material hitting and rubbing against the grinding block and the gear ring, making the material grinding more sufficient to improve the equipment production capacity;

[0021] The existing crushing hammers are made of alloy materials such as tungsten carbide, which are expensive and have a large density. This structure can reduce weight, save material costs, and improve the safety of the high-speed operation of the hammer head. Description of the Drawings

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0023] Figure 1 is a schematic structural view of the present invention;

[0024] Figure 2 is a schematic structural view of the extended crushing section of the present invention;

[0025] Figure 3 is a schematic structural view of the crushing hammer of the present invention in the top-down direction;

[0026] Figure 4 is a schematic structural view of the prior art.

[0027] In the figure: 1 - crushing disc; 2 - crushing hammer; 3 - stator gear ring; 4 - extended crushing section; 5 - connecting section; 6 - inclined top surface; 7 - inclined side surface; 8 - bolt hole; 9 - reinforcing rib. Specific Embodiments

[0028] The following will describe in detail the embodiments of the technical solutions of the present invention in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0029] As Figures 1 to 3 shown, the mechanical grinding crushing pair includes a stator gear ring 3, a crushing disc 1 is rotatably arranged inside the stator gear ring 3, and a plurality of crushing hammers 2 are evenly distributed at a position near the outer ring of the crushing disc 1;

[0030] The crushing hammer 2 includes an extended crushing section 4 extending between the crushing disc 1 and the stator gear ring 3, and the distance between the outer ring of the crushing disc 1 and the stator gear ring 3 is enlarged through the extended crushing section 4.

[0031] The lower end of the extended crushing section 4 extends to the outer ring of the stator gear ring 3.

[0032] A connecting section 5 is horizontally and fixedly connected to the extended crushing section 4, and the connecting section 5 is fixed to the upper surface of the crushing disc 1.

[0033] A plurality of bolt holes 8 are arranged in parallel on the connecting section 5, bolts are inserted into the bolt holes 8, and the connecting section 5 is fixed to the crushing disc 1 by using the bolts.

[0034] An inclined top surface 6 is provided at the upper corner of the extended crushing section 4 close to the center of the crushing disc 1.

[0035] The connecting section 5 is located on the back surface of the extended broken section 4.

[0036] The connecting section 5 is provided with an inclined side surface 7 facing the outer wall of the stator tooth ring 3, and one end of the inclined side surface 7 on the outer side is connected to the back surface of the extended broken section 4.

[0037] A reinforcing rib 9 connected to the extended broken section 4 is also fixedly connected to the upper surface of the connecting section 5.

[0038] The working principle of this device is as follows:

[0039] By using the extended broken section 4 and its lower end extending to the outer ring of the stator tooth ring 3, the grinding function can be realized on both the upper and lower surfaces of the crushing disc 1, improving the grinding ability of the hammer head;

[0040] Reducing the diameter of the crushing disc 1 can increase the gap between the crushing disc 1 and the tooth ring, thereby reducing the air-material flow velocity between the crushing disc 1 and the tooth ring, and further increasing the probability of the material colliding and rubbing with the grinding block and the tooth ring, making the material grinding more sufficient to improve the equipment production capacity;

[0041] The existing crushing hammers 2 are all made of alloy materials such as tungsten carbide, which are expensive and have a large density. This structure can reduce weight, save material costs and improve the safety of the high-speed operation of the hammer head.

[0042] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. Mechanical grinding and crushing unit, including a stator gear ring (3), a crushing disc (1) is rotatably arranged inside the stator gear ring (3), and a plurality of crushing hammers (2) are evenly distributed at positions near the outer ring of the crushing disc (1), characterized in that: The crushing hammer (2) includes an extended crushing section (4) extending between the crushing disc (1) and the stator gear ring (3), and the distance between the outer ring of the crushing disc (1) and the stator gear ring (3) is enlarged through the extended crushing section (4).

2. The mechanical grinding and pulverizing accessory according to claim 1, wherein: The lower end of the extended crushing section (4) extends to the outer ring of the stator gear ring (3).

3. The mechanical grinding and pulverizing accessory according to claim 1, wherein: A connecting section (5) is horizontally and fixedly connected to the extended crushing section (4), and the connecting section (5) is fixed to the upper surface of the crushing disc (1).

4. The mechanical grinding and pulverizing sub-assembly according to claim 3, wherein: A plurality of bolt holes (8) are arranged side by side on the connecting section (5), bolts are inserted into the bolt holes (8), and the connecting section (5) is fixed to the crushing disc (1) by using the bolts.

5. The mechanical grinding and pulverizing pair according to claim 1, characterized in that: An inclined top surface (6) is provided at the upper corner of the extended crushing section (4) close to the center of the crushing disc (1).

6. The mechanical grinding and pulverizing accessory according to claim 3, wherein: The connecting section (5) is located on the back surface of the extended crushing section (4).

7. The mechanical grinding and pulverizing pair according to claim 3, wherein: An inclined side surface (7) is provided on the outer wall of the connecting section (5) facing the stator gear ring (3), and the outer end of the inclined side surface (7) is connected to the back surface of the extended crushing section (4).

8. The mechanical grinding and pulverizing pair according to claim 3, characterized in that: A reinforcing rib (9) connected to the extended crushing section (4) is also fixedly connected to the upper surface of the connecting section (5).

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