WO2021168933A1

WO2021168933A1 - Multifunctional grinder

Info

Publication number: WO2021168933A1
Application number: PCT/CN2020/080094
Authority: WO
Inventors: 孙云; 朱宽平; 赵建; 苑明华; 李德祥
Original assignee: 南京西普水泥工程集团有限公司
Priority date: 2020-02-24
Filing date: 2020-03-19
Publication date: 2021-09-02
Also published as: CN111298938A

Abstract

A multifunctional grinder, comprising a motor (1), a speed reducer (3) connected to the motor (1), a grind disk body (5) connected to the speed reducer (3), a cover plate (20) and a grind disk liner plate (6) arranged on an upper side of the grind disk body (5), and a plurality of grind roller apparatuses; an air channel casing body (9) is provided at an outer lower side of the grind disk body (5), and an air through channel (11) is formed from spacing between the air channel casing body (9) and an outer side of the grind disk body (5); a grind machine intermediate casing (23) is provided at an outer upper side of the grind disk body (5), the motor (1) is a variable frequency motor, a counter impact crush plate (7) is fixedly provided at an inner side of the air channel casing body (9), and a plurality of crush hammers (12) are fixedly provided at an upper side of the periphery of the grind disk body (5). The present multifunctional grinder integrates crushing, grinding, and drying, has high grinding efficiency and low energy consumption, is usable in a wide range of applications, and is highly adaptable; By utilizing a variable frequency speed adjustment motor, rotational speed can be adjusted without the need to replace the speed reducer and infrastructure, adjusting is convenient, and costs are reduced; crushing and drying functions may be used as necessary, and the grinding function may also be used, having a large market size and also able to reduce capital risk for investors.

Description

Multifunctional crusher

Technical field

The invention relates to the field of crushers, in particular to a multifunctional crusher.

Background technique

In today's society, the development of roller mill technology has approached maturity, and the specifications and types of roller mills are also diversified. The difference in grinding materials has also led to different types of roller mills. As a process equipment, it undertakes the task of grinding and drying materials. Roller mills control the rollers by hydraulically controlling the rocker arm to give a certain pressure to the rollers to form a grinding structure system with the grinding discs. Because roller mills are generally large-scale heavy machines, purchase and replacement are expensive, so one The multi-functional roller mill that can be used for crushing, grinding, powder sorting and drying of a variety of materials will be popular in the market, and it also provides the possibility for its use in many industries.

Summary of the invention

The purpose of the present invention is to provide a multifunctional crusher in view of the shortcomings of the prior art.

In order to achieve the above objective, the present invention provides a multifunctional crusher, including a motor, a reducer connected to the motor, a grinding disc body connected to the reducer, a grinding disc liner arranged on the upper side of the grinding disc body, and Cover plate and several grinding roller devices, the lower side of the grinding disc body is provided with an air duct shell, the air duct shell is spaced from the outer side of the grinding disc body with a ventilation channel, and the upper side of the grinding disc body is provided with a middle shell of the mill, The motor is a variable frequency motor, a counterattack crushing plate is fixed on the inside of the air duct shell, and a plurality of breakers are fixed on the upper side of the outer periphery of the grinding plate.

Further, the breaking hammer includes a main body and cemented carbide blocks fixed on both sides of the outer end of the main body.

Further, the inner surface of the impact crushing plate is stepped, and it is bolted to the air duct shell.

Further, a deflector is also provided above the impact crushing plate.

Further, the grinding roller device includes a grinding roller and a grinding roller arm inserted through the middle shell of the mill. The outer end of the grinding roller arm is hinged on the grinding roller base, and the lower side of the grinding roller arm is connected with hydraulic pressure. The cylinder is sealed with the middle shell of the mill.

Further, the grinding roller is a tire-type grinding roller, and the angle between its center line and the surface of the grinding disc is 0 to 15°.

Further, the seal is a spherical seal.

Further, a retaining ring is provided around the upper side of the grinding disc body.

Further, the surfaces of the grinding disc liner and the grinding roller are both built-up welded with a wear-resistant layer.

Further, the breaking hammer is connected with the grinding disc body by bolts, the lower side of the main body is provided with a limiting groove, and the upper side of the grinding disc body is provided with a boss that cooperates with the limiting groove.

Beneficial effects: 1. It integrates crushing, grinding and drying, with high grinding efficiency, low energy consumption, wide application range and strong applicability.

2. Use frequency conversion speed motor, the speed can be adjusted, no need to replace the reducer and infrastructure, easy to exchange and cost saving.

3. The crusher can enable the crushing and drying function as required, and also the grinding function, which has a large market space and can also reduce the capital risk of investors.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of a multifunctional crusher according to an embodiment of the present invention;

Fig. 2 is a partial enlarged schematic diagram of area A in Fig. 1;

Figure 3 is a schematic diagram of the structure of the breaking hammer of the embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the impact crushing plate according to the embodiment of the present invention.

Detailed ways

The present invention will be further clarified below in conjunction with the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

As shown in Figures 1 and 2, the embodiment of the present invention provides a multifunctional crusher, which includes a motor 1, a reducer 3, a grinding disc body 5, a grinding disc liner 6, a cover plate 20, and several grinding roller devices. Among them, the reducer 3 is preferably connected to the motor 1 through a diaphragm coupling 2, and the grinding disc body 5 is connected to the output shaft of the reducer 4 through a plurality of bolts 4, so that the grinding disc body 5 can be together with the output shaft of the reducer 4 Rotate. The grinding disc liner 6 is clamped to the grinding disc body 5 by a pressing block 17, and the pressing block 17 is fixed on the upper side of the grinding disc body 5 by a plurality of bolts 18. The cover plate 20 is fixed on the upper side of the middle part of the grinding disc body 5 by a plurality of bolts, and a protective cover is also provided on the upper side of the cover plate 20. An air duct housing 9 is provided on the outer and lower side of the grinding disc body 5, an air duct 11 is formed between the air duct housing 9 and the outer side of the grinding disc body 5, and a mill middle housing 23 is arranged on the outer upper side of the grinding disc body 5. The motor 1 used in the embodiment of the present invention is a variable frequency motor, and the output speed can be adjusted according to the requirements of different working conditions. A counterattack crushing plate 7 is fixed on the inner side of the air duct housing 9 on the upper part of the air duct 11, and a number of breaking hammers 12 are fixed on the upper side of the outer periphery of the grinding disc body 5.

As shown in FIG. 3, the breaking hammer 12 of the embodiment of the present invention includes a main body 121 and a cemented carbide block 122 fixed on both sides of the outer end of the main body 121. The cemented carbide block 122 is preferably fixedly connected to the main body 121 through a welding zone 123. The quality alloy block 122 can be made of tungsten carbide alloy, YT14 or YT15 alloy. In order to fix the breaker 12 on the grinding disc body 5, it is preferable to provide a fixing hole 124 on the main body 121 and fix it on the grinding disc body 5 by bolts 13. In order to improve the connection stability, it is preferable to set a limit on the lower side of the breaker 12 The positioning groove 125 is provided with a boss 51 matching the positioning groove on the upper side of the grinding disc body 5.

As shown in Fig. 4, the inner surface 71 of the impact crushing plate 7 of the embodiment of the present invention is preferably arranged in a stepped shape, which can reduce the wind resistance while ensuring the impact resistance. The counterattack crushing plate 7 is preferably bolted and fixed with the air duct shell 9, and it is preferable to provide a countersunk hole 72 on the counterattack crushing plate 7, and the bolt 8 is used to pass through the countersunk hole 72 for fixing. In order to guide the intake air, a deflector 10 is also provided above the impact crushing plate 7.

The grinding roller device used in the embodiment of the present invention is a single-arm column grinding roller, which includes a grinding roller 16 and an interspersed mill shell 23 arranged on the grinding roller arm 19. The grinding roller 16 preferably adopts a tire-shaped grinding roller, which is installed in the grinding roller. The inner end of the roller arm 19 and the outer end of the grinding roller arm 19 are hinged on the grinding roller base 22. The lower side of the grinding roller arm 19 is connected with a hydraulic cylinder 24. The hydraulic cylinder 24 directly applies the working pressure required by the grinding roller 16 to the grinding roller base 22. The grinding roller arm 19 is on. A seal 21 is provided between the roller arm 19 and the mill shell 23. In order to ensure the sealing effect, the seal 21 is a spherical seal, that is, the seal part on the roller arm 19 is in contact with the seal part on the mill shell 23 The surface is spherical, which can realize multi-directional sealing. The grinding roller 16 preferably adopts a tire-shaped grinding roller. The included angle between the center line of the grinding roller 16 and the upper surface of the grinding disc body 5 is 0 to 15°, which can be adjusted according to different process arrangements and needs. During installation, the grinding roller base can be adjusted The height of 22 is used to adjust the angle between the center line of the grinding roller 16 and the upper surface of the grinding disc body 5. A stopper ring 14 is provided around the upper side of the grinding disc body 5, and the stopper ring 14 can be fixed on the upper side of the grinding disc body 5 by a plurality of bolts 15. In order to improve the service life of the grinding disc liner 6 and the grinding roller 16, it is preferable that the surfaces of the grinding disc liner 6 and the grinding roller 16 are welded with a wear-resistant layer.

work process:

When the material particles are brittle and easy to grind, when the crushing, dispersing, drying, and powder selection functions are enabled, the process requires a relatively high speed of the grinding disc, about 120-150r/min, the line of the breaker 12 The speed can reach 25～30m/s. When the material to be ground is fed to the cover plate 20 on the grinding disc body 5 and the protective cover, under the action of centrifugal force, the material is dispersed with the rotating grinding disc body 5 and passes through the grinding roller 16. And the grinding plate liner 6 is broken. At this time, the pressure of the hydraulic cylinder 24 on the grinding roller 16 is relatively small, and it is mainly used for crushing. A crushing area is formed between the breaking hammer 12 and the impact crushing plate 7. With high rotation speed, the material being thrown out also has a high speed. The high-speed hot air surging from under the 5 circles of the grinding disc body will take away most of the small particles of material and enter the powder separator to select the powder. The granular block material is not taken away. When passing through the crushing space of the breaking hammer 12 and the impact crushing plate 7, it will be impacted by the crushing hammer 12 and the impact crushing plate 7, crushed into powdery materials, and then taken away by the hot air. , The fine powder is taken away by the separator, and the coarse powder is re-grinded to achieve the function of material crushing and drying.

When the hardness of the material is high, the grinding and powder selection process is activated. Considering process requirements and structural layout, the breaker 12 should be removed first to avoid unnecessary wear. The hydraulic cylinder 24 applies high pressure to the grinding roller 16 to grind the material under high pressure. The speed of the grinding disc body 5 also needs to be adjusted to 30-38r/min. After the material is fed into the cover plate 20 on the grinding disc body 5 and the upper middle of the protective cover Under the action of centrifugal force, it is thrown to the outer periphery, and after grinding by the grinding roller 16 and the grinding disc liner 6, the fine powder is taken away by the powder classifier, and the coarse powder is returned to the material to be ground again to achieve the function of material grinding and powder selection.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, other parts not specifically described belong to the prior art or common knowledge. Without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

A multifunctional crusher includes a motor, a reducer connected with the motor, a grinding disc body connected with the reducer, a grinding disc liner and a cover plate arranged on the upper side of the grinding disc body, and a plurality of grinding roller devices. The lower side of the grinding disc body is provided with an air duct shell, the air duct shell and the outside of the grinding disc body are spaced with a ventilation channel, and the upper side of the grinding disc body is provided with a mill middle shell, characterized in that the motor is a frequency conversion For the motor, a counterattack crushing plate is fixed on the inside of the air duct shell, and a plurality of breakers are fixed on the upper side of the outer periphery of the grinding plate.
The multifunctional crusher according to claim 1, wherein the breaking hammer comprises a main body and cemented carbide blocks fixed on both sides of the outer end of the main body.
The multifunctional crusher according to claim 1, wherein the inner surface of the impact crushing plate is stepped, and it is bolted to the air duct shell.
The multifunctional crusher according to claim 1, wherein a deflector is further provided above the impact crushing plate.
The multifunctional crusher according to claim 1, wherein the grinding roller device comprises a grinding roller and a grinding roller arm inserted in the middle shell of the grinding mill, and the outer end of the grinding roller arm is hinged on the grinding roller. On the roller base, the lower side of the grinding roller arm is connected with a hydraulic cylinder, and a seal is provided between it and the middle shell of the mill.
The multifunctional crushing mill according to claim 5, wherein the grinding roller is a tire-shaped grinding roller, and the included angle between the center line and the surface of the grinding disc is 0 to 15°.
The multifunctional crusher according to claim 5, wherein the seal is a spherical seal.
The multifunctional crusher according to claim 1, characterized in that a material stop ring is arranged around the upper side of the grinding disc body.
The multifunctional crusher according to claim 5, characterized in that the surfaces of the grinding disc liner and the grinding roller are both surfacing welded with a wear-resistant layer.
The multifunctional crusher according to claim 2, wherein the breaking hammer is connected with the grinding disc body by bolts, the lower side of the main body is provided with a limit groove, and the upper side of the grinding disc body is provided with a limit groove The mating boss.